if ( Number.EPSILON === undefined ) {
	Number.EPSILON = Math.pow( 2, - 52 );
}
if ( Number.isInteger === undefined ) {
	Number.isInteger = function ( value ) {
		return typeof value === 'number' && isFinite( value ) && Math.floor( value ) === value;
	};
}
if ( Math.sign === undefined ) {
	Math.sign = function ( x ) {
		return ( x < 0 ) ? - 1 : ( x > 0 ) ? 1 : + x;
	};
}
if ( 'name' in Function.prototype === false ) {
	Object.defineProperty( Function.prototype, 'name', {
		get: function () {
			return this.toString().match( /^\s*function\s*([^\(\s]*)/ )[ 1 ];
		}
	} );
}
if ( Object.assign === undefined ) {
	Object.assign = function ( target ) {
		if ( target === undefined || target === null ) {
			throw new TypeError( 'Cannot convert undefined or null to object' );
		}
		const output = Object( target );
		for ( let index = 1; index < arguments.length; index ++ ) {
			const source = arguments[ index ];
			if ( source !== undefined && source !== null ) {
				for ( const nextKey in source ) {
					if ( Object.prototype.hasOwnProperty.call( source, nextKey ) ) {
						output[ nextKey ] = source[ nextKey ];
					}
				}
			}
		}
		return output;
	};
}
const REVISION = '120';
const MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2, ROTATE: 0, DOLLY: 1, PAN: 2 };
const TOUCH = { ROTATE: 0, PAN: 1, DOLLY_PAN: 2, DOLLY_ROTATE: 3 };
const CullFaceNone = 0;
const CullFaceBack = 1;
const CullFaceFront = 2;
const CullFaceFrontBack = 3;
const BasicShadowMap = 0;
const PCFShadowMap = 1;
const PCFSoftShadowMap = 2;
const VSMShadowMap = 3;
const FrontSide = 0;
const BackSide = 1;
const DoubleSide = 2;
const FlatShading = 1;
const SmoothShading = 2;
const NoBlending = 0;
const NormalBlending = 1;
const AdditiveBlending = 2;
const SubtractiveBlending = 3;
const MultiplyBlending = 4;
const CustomBlending = 5;
const AddEquation = 100;
const SubtractEquation = 101;
const ReverseSubtractEquation = 102;
const MinEquation = 103;
const MaxEquation = 104;
const ZeroFactor = 200;
const OneFactor = 201;
const SrcColorFactor = 202;
const OneMinusSrcColorFactor = 203;
const SrcAlphaFactor = 204;
const OneMinusSrcAlphaFactor = 205;
const DstAlphaFactor = 206;
const OneMinusDstAlphaFactor = 207;
const DstColorFactor = 208;
const OneMinusDstColorFactor = 209;
const SrcAlphaSaturateFactor = 210;
const NeverDepth = 0;
const AlwaysDepth = 1;
const LessDepth = 2;
const LessEqualDepth = 3;
const EqualDepth = 4;
const GreaterEqualDepth = 5;
const GreaterDepth = 6;
const NotEqualDepth = 7;
const MultiplyOperation = 0;
const MixOperation = 1;
const AddOperation = 2;
const NoToneMapping = 0;
const LinearToneMapping = 1;
const ReinhardToneMapping = 2;
const CineonToneMapping = 3;
const ACESFilmicToneMapping = 4;
const CustomToneMapping = 5;
const UVMapping = 300;
const CubeReflectionMapping = 301;
const CubeRefractionMapping = 302;
const EquirectangularReflectionMapping = 303;
const EquirectangularRefractionMapping = 304;
const CubeUVReflectionMapping = 306;
const CubeUVRefractionMapping = 307;
const RepeatWrapping = 1000;
const ClampToEdgeWrapping = 1001;
const MirroredRepeatWrapping = 1002;
const NearestFilter = 1003;
const NearestMipmapNearestFilter = 1004;
const NearestMipMapNearestFilter = 1004;
const NearestMipmapLinearFilter = 1005;
const NearestMipMapLinearFilter = 1005;
const LinearFilter = 1006;
const LinearMipmapNearestFilter = 1007;
const LinearMipMapNearestFilter = 1007;
const LinearMipmapLinearFilter = 1008;
const LinearMipMapLinearFilter = 1008;
const UnsignedByteType = 1009;
const ByteType = 1010;
const ShortType = 1011;
const UnsignedShortType = 1012;
const IntType = 1013;
const UnsignedIntType = 1014;
const FloatType = 1015;
const HalfFloatType = 1016;
const UnsignedShort4444Type = 1017;
const UnsignedShort5551Type = 1018;
const UnsignedShort565Type = 1019;
const UnsignedInt248Type = 1020;
const AlphaFormat = 1021;
const RGBFormat = 1022;
const RGBAFormat = 1023;
const LuminanceFormat = 1024;
const LuminanceAlphaFormat = 1025;
const RGBEFormat = RGBAFormat;
const DepthFormat = 1026;
const DepthStencilFormat = 1027;
const RedFormat = 1028;
const RedIntegerFormat = 1029;
const RGFormat = 1030;
const RGIntegerFormat = 1031;
const RGBIntegerFormat = 1032;
const RGBAIntegerFormat = 1033;
const RGB_S3TC_DXT1_Format = 33776;
const RGBA_S3TC_DXT1_Format = 33777;
const RGBA_S3TC_DXT3_Format = 33778;
const RGBA_S3TC_DXT5_Format = 33779;
const RGB_PVRTC_4BPPV1_Format = 35840;
const RGB_PVRTC_2BPPV1_Format = 35841;
const RGBA_PVRTC_4BPPV1_Format = 35842;
const RGBA_PVRTC_2BPPV1_Format = 35843;
const RGB_ETC1_Format = 36196;
const RGB_ETC2_Format = 37492;
const RGBA_ETC2_EAC_Format = 37496;
const RGBA_ASTC_4x4_Format = 37808;
const RGBA_ASTC_5x4_Format = 37809;
const RGBA_ASTC_5x5_Format = 37810;
const RGBA_ASTC_6x5_Format = 37811;
const RGBA_ASTC_6x6_Format = 37812;
const RGBA_ASTC_8x5_Format = 37813;
const RGBA_ASTC_8x6_Format = 37814;
const RGBA_ASTC_8x8_Format = 37815;
const RGBA_ASTC_10x5_Format = 37816;
const RGBA_ASTC_10x6_Format = 37817;
const RGBA_ASTC_10x8_Format = 37818;
const RGBA_ASTC_10x10_Format = 37819;
const RGBA_ASTC_12x10_Format = 37820;
const RGBA_ASTC_12x12_Format = 37821;
const RGBA_BPTC_Format = 36492;
const SRGB8_ALPHA8_ASTC_4x4_Format = 37840;
const SRGB8_ALPHA8_ASTC_5x4_Format = 37841;
const SRGB8_ALPHA8_ASTC_5x5_Format = 37842;
const SRGB8_ALPHA8_ASTC_6x5_Format = 37843;
const SRGB8_ALPHA8_ASTC_6x6_Format = 37844;
const SRGB8_ALPHA8_ASTC_8x5_Format = 37845;
const SRGB8_ALPHA8_ASTC_8x6_Format = 37846;
const SRGB8_ALPHA8_ASTC_8x8_Format = 37847;
const SRGB8_ALPHA8_ASTC_10x5_Format = 37848;
const SRGB8_ALPHA8_ASTC_10x6_Format = 37849;
const SRGB8_ALPHA8_ASTC_10x8_Format = 37850;
const SRGB8_ALPHA8_ASTC_10x10_Format = 37851;
const SRGB8_ALPHA8_ASTC_12x10_Format = 37852;
const SRGB8_ALPHA8_ASTC_12x12_Format = 37853;
const LoopOnce = 2200;
const LoopRepeat = 2201;
const LoopPingPong = 2202;
const InterpolateDiscrete = 2300;
const InterpolateLinear = 2301;
const InterpolateSmooth = 2302;
const ZeroCurvatureEnding = 2400;
const ZeroSlopeEnding = 2401;
const WrapAroundEnding = 2402;
const NormalAnimationBlendMode = 2500;
const AdditiveAnimationBlendMode = 2501;
const TrianglesDrawMode = 0;
const TriangleStripDrawMode = 1;
const TriangleFanDrawMode = 2;
const LinearEncoding = 3000;
const sRGBEncoding = 3001;
const GammaEncoding = 3007;
const RGBEEncoding = 3002;
const LogLuvEncoding = 3003;
const RGBM7Encoding = 3004;
const RGBM16Encoding = 3005;
const RGBDEncoding = 3006;
const BasicDepthPacking = 3200;
const RGBADepthPacking = 3201;
const TangentSpaceNormalMap = 0;
const ObjectSpaceNormalMap = 1;
const ZeroStencilOp = 0;
const KeepStencilOp = 7680;
const ReplaceStencilOp = 7681;
const IncrementStencilOp = 7682;
const DecrementStencilOp = 7683;
const IncrementWrapStencilOp = 34055;
const DecrementWrapStencilOp = 34056;
const InvertStencilOp = 5386;
const NeverStencilFunc = 512;
const LessStencilFunc = 513;
const EqualStencilFunc = 514;
const LessEqualStencilFunc = 515;
const GreaterStencilFunc = 516;
const NotEqualStencilFunc = 517;
const GreaterEqualStencilFunc = 518;
const AlwaysStencilFunc = 519;
const StaticDrawUsage = 35044;
const DynamicDrawUsage = 35048;
const StreamDrawUsage = 35040;
const StaticReadUsage = 35045;
const DynamicReadUsage = 35049;
const StreamReadUsage = 35041;
const StaticCopyUsage = 35046;
const DynamicCopyUsage = 35050;
const StreamCopyUsage = 35042;
const GLSL1 = "100";
const GLSL3 = "300 es";
function EventDispatcher() {}
Object.assign( EventDispatcher.prototype, {
	addEventListener: function ( type, listener ) {
		if ( this._listeners === undefined ) this._listeners = {};
		const listeners = this._listeners;
		if ( listeners[ type ] === undefined ) {
			listeners[ type ] = [];
		}
		if ( listeners[ type ].indexOf( listener ) === - 1 ) {
			listeners[ type ].push( listener );
		}
	},
	hasEventListener: function ( type, listener ) {
		if ( this._listeners === undefined ) return false;
		const listeners = this._listeners;
		return listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;
	},
	removeEventListener: function ( type, listener ) {
		if ( this._listeners === undefined ) return;
		const listeners = this._listeners;
		const listenerArray = listeners[ type ];
		if ( listenerArray !== undefined ) {
			const index = listenerArray.indexOf( listener );
			if ( index !== - 1 ) {
				listenerArray.splice( index, 1 );
			}
		}
	},
	dispatchEvent: function ( event ) {
		if ( this._listeners === undefined ) return;
		const listeners = this._listeners;
		const listenerArray = listeners[ event.type ];
		if ( listenerArray !== undefined ) {
			event.target = this;
			const array = listenerArray.slice( 0 );
			for ( let i = 0, l = array.length; i < l; i ++ ) {
				array[ i ].call( this, event );
			}
		}
	}
} );
const _lut = [];
for ( let i = 0; i < 256; i ++ ) {
	_lut[ i ] = ( i < 16 ? '0' : '' ) + ( i ).toString( 16 );
}
let _seed = 1234567;
const MathUtils = {
	DEG2RAD: Math.PI / 180,
	RAD2DEG: 180 / Math.PI,
	generateUUID: function () {
		const d0 = Math.random() * 0xffffffff | 0;
		const d1 = Math.random() * 0xffffffff | 0;
		const d2 = Math.random() * 0xffffffff | 0;
		const d3 = Math.random() * 0xffffffff | 0;
		const uuid = _lut[ d0 & 0xff ] + _lut[ d0 >> 8 & 0xff ] + _lut[ d0 >> 16 & 0xff ] + _lut[ d0 >> 24 & 0xff ] + '-' +
			_lut[ d1 & 0xff ] + _lut[ d1 >> 8 & 0xff ] + '-' + _lut[ d1 >> 16 & 0x0f | 0x40 ] + _lut[ d1 >> 24 & 0xff ] + '-' +
			_lut[ d2 & 0x3f | 0x80 ] + _lut[ d2 >> 8 & 0xff ] + '-' + _lut[ d2 >> 16 & 0xff ] + _lut[ d2 >> 24 & 0xff ] +
			_lut[ d3 & 0xff ] + _lut[ d3 >> 8 & 0xff ] + _lut[ d3 >> 16 & 0xff ] + _lut[ d3 >> 24 & 0xff ];
		return uuid.toUpperCase();
	},
	clamp: function ( value, min, max ) {
		return Math.max( min, Math.min( max, value ) );
	},
	euclideanModulo: function ( n, m ) {
		return ( ( n % m ) + m ) % m;
	},
	mapLinear: function ( x, a1, a2, b1, b2 ) {
		return b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );
	},
	lerp: function ( x, y, t ) {
		return ( 1 - t ) * x + t * y;
	},
	smoothstep: function ( x, min, max ) {
		if ( x <= min ) return 0;
		if ( x >= max ) return 1;
		x = ( x - min ) / ( max - min );
		return x * x * ( 3 - 2 * x );
	},
	smootherstep: function ( x, min, max ) {
		if ( x <= min ) return 0;
		if ( x >= max ) return 1;
		x = ( x - min ) / ( max - min );
		return x * x * x * ( x * ( x * 6 - 15 ) + 10 );
	},
	randInt: function ( low, high ) {
		return low + Math.floor( Math.random() * ( high - low + 1 ) );
	},
	randFloat: function ( low, high ) {
		return low + Math.random() * ( high - low );
	},
	randFloatSpread: function ( range ) {
		return range * ( 0.5 - Math.random() );
	},
	seededRandom: function ( s ) {
		if ( s !== undefined ) _seed = s % 2147483647;
		_seed = _seed * 16807 % 2147483647;
		return ( _seed - 1 ) / 2147483646;
	},
	degToRad: function ( degrees ) {
		return degrees * MathUtils.DEG2RAD;
	},
	radToDeg: function ( radians ) {
		return radians * MathUtils.RAD2DEG;
	},
	isPowerOfTwo: function ( value ) {
		return ( value & ( value - 1 ) ) === 0 && value !== 0;
	},
	ceilPowerOfTwo: function ( value ) {
		return Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );
	},
	floorPowerOfTwo: function ( value ) {
		return Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );
	},
	setQuaternionFromProperEuler: function ( q, a, b, c, order ) {
		const cos = Math.cos;
		const sin = Math.sin;
		const c2 = cos( b / 2 );
		const s2 = sin( b / 2 );
		const c13 = cos( ( a + c ) / 2 );
		const s13 = sin( ( a + c ) / 2 );
		const c1_3 = cos( ( a - c ) / 2 );
		const s1_3 = sin( ( a - c ) / 2 );
		const c3_1 = cos( ( c - a ) / 2 );
		const s3_1 = sin( ( c - a ) / 2 );
		switch ( order ) {
			case 'XYX':
				q.set( c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13 );
				break;
			case 'YZY':
				q.set( s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13 );
				break;
			case 'ZXZ':
				q.set( s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13 );
				break;
			case 'XZX':
				q.set( c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13 );
				break;
			case 'YXY':
				q.set( s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13 );
				break;
			case 'ZYZ':
				q.set( s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13 );
				break;
			default:
				console.warn( 'THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order );
		}
	}
};
class Vector2 {
	constructor( x = 0, y = 0 ) {
		Object.defineProperty( this, 'isVector2', { value: true } );
		this.x = x;
		this.y = y;
	}
	get width() {
		return this.x;
	}
	set width( value ) {
		this.x = value;
	}
	get height() {
		return this.y;
	}
	set height( value ) {
		this.y = value;
	}
	set( x, y ) {
		this.x = x;
		this.y = y;
		return this;
	}
	setScalar( scalar ) {
		this.x = scalar;
		this.y = scalar;
		return this;
	}
	setX( x ) {
		this.x = x;
		return this;
	}
	setY( y ) {
		this.y = y;
		return this;
	}
	setComponent( index, value ) {
		switch ( index ) {
			case 0: this.x = value; break;
			case 1: this.y = value; break;
			default: throw new Error( 'index is out of range: ' + index );
		}
		return this;
	}
	getComponent( index ) {
		switch ( index ) {
			case 0: return this.x;
			case 1: return this.y;
			default: throw new Error( 'index is out of range: ' + index );
		}
	}
	clone() {
		return new this.constructor( this.x, this.y );
	}
	copy( v ) {
		this.x = v.x;
		this.y = v.y;
		return this;
	}
	add( v, w ) {
		if ( w !== undefined ) {
			console.warn( 'THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
			return this.addVectors( v, w );
		}
		this.x += v.x;
		this.y += v.y;
		return this;
	}
	addScalar( s ) {
		this.x += s;
		this.y += s;
		return this;
	}
	addVectors( a, b ) {
		this.x = a.x + b.x;
		this.y = a.y + b.y;
		return this;
	}
	addScaledVector( v, s ) {
		this.x += v.x * s;
		this.y += v.y * s;
		return this;
	}
	sub( v, w ) {
		if ( w !== undefined ) {
			console.warn( 'THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
			return this.subVectors( v, w );
		}
		this.x -= v.x;
		this.y -= v.y;
		return this;
	}
	subScalar( s ) {
		this.x -= s;
		this.y -= s;
		return this;
	}
	subVectors( a, b ) {
		this.x = a.x - b.x;
		this.y = a.y - b.y;
		return this;
	}
	multiply( v ) {
		this.x *= v.x;
		this.y *= v.y;
		return this;
	}
	multiplyScalar( scalar ) {
		this.x *= scalar;
		this.y *= scalar;
		return this;
	}
	divide( v ) {
		this.x /= v.x;
		this.y /= v.y;
		return this;
	}
	divideScalar( scalar ) {
		return this.multiplyScalar( 1 / scalar );
	}
	applyMatrix3( m ) {
		const x = this.x, y = this.y;
		const e = m.elements;
		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];
		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];
		return this;
	}
	min( v ) {
		this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );
		return this;
	}
	max( v ) {
		this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );
		return this;
	}
	clamp( min, max ) {
		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
		return this;
	}
	clampScalar( minVal, maxVal ) {
		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
		return this;
	}
	clampLength( min, max ) {
		const length = this.length();
		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
	}
	floor() {
		this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );
		return this;
	}
	ceil() {
		this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );
		return this;
	}
	round() {
		this.x = Math.round( this.x );
		this.y = Math.round( this.y );
		return this;
	}
	roundToZero() {
		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
		return this;
	}
	negate() {
		this.x = - this.x;
		this.y = - this.y;
		return this;
	}
	dot( v ) {
		return this.x * v.x + this.y * v.y;
	}
	cross( v ) {
		return this.x * v.y - this.y * v.x;
	}
	lengthSq() {
		return this.x * this.x + this.y * this.y;
	}
	length() {
		return Math.sqrt( this.x * this.x + this.y * this.y );
	}
	manhattanLength() {
		return Math.abs( this.x ) + Math.abs( this.y );
	}
	normalize() {
		return this.divideScalar( this.length() || 1 );
	}
	angle() {
		const angle = Math.atan2( - this.y, - this.x ) + Math.PI;
		return angle;
	}
	distanceTo( v ) {
		return Math.sqrt( this.distanceToSquared( v ) );
	}
	distanceToSquared( v ) {
		const dx = this.x - v.x, dy = this.y - v.y;
		return dx * dx + dy * dy;
	}
	manhattanDistanceTo( v ) {
		return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );
	}
	setLength( length ) {
		return this.normalize().multiplyScalar( length );
	}
	lerp( v, alpha ) {
		this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;
		return this;
	}
	lerpVectors( v1, v2, alpha ) {
		this.x = v1.x + ( v2.x - v1.x ) * alpha;
		this.y = v1.y + ( v2.y - v1.y ) * alpha;
		return this;
	}
	equals( v ) {
		return ( ( v.x === this.x ) && ( v.y === this.y ) );
	}
	fromArray( array, offset ) {
		if ( offset === undefined ) offset = 0;
		this.x = array[ offset ];
		this.y = array[ offset + 1 ];
		return this;
	}
	toArray( array, offset ) {
		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;
		array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;
		return array;
	}
	fromBufferAttribute( attribute, index, offset ) {
		if ( offset !== undefined ) {
			console.warn( 'THREE.Vector2: offset has been removed from .fromBufferAttribute().' );
		}
		this.x = attribute.getX( index );
		this.y = attribute.getY( index );
		return this;
	}
	rotateAround( center, angle ) {
		const c = Math.cos( angle ), s = Math.sin( angle );
		const x = this.x - center.x;
		const y = this.y - center.y;
		this.x = x * c - y * s + center.x;
		this.y = x * s + y * c + center.y;
		return this;
	}
	random() {
		this.x = Math.random();
		this.y = Math.random();
		return this;
	}
}
class Matrix3 {
	constructor() {
		Object.defineProperty( this, 'isMatrix3', { value: true } );
		this.elements = [
			1, 0, 0,
			0, 1, 0,
			0, 0, 1
		];
		if ( arguments.length > 0 ) {
			console.error( 'THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.' );
		}
	}
	set( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {
		const te = this.elements;
		te[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;
		te[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;
		te[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;
		return this;
	}
	identity() {
		this.set(
			1, 0, 0,
			0, 1, 0,
			0, 0, 1
		);
		return this;
	}
	clone() {
		return new this.constructor().fromArray( this.elements );
	}
	copy( m ) {
		const te = this.elements;
		const me = m.elements;
		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];
		te[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];
		te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];
		return this;
	}
	extractBasis( xAxis, yAxis, zAxis ) {
		xAxis.setFromMatrix3Column( this, 0 );
		yAxis.setFromMatrix3Column( this, 1 );
		zAxis.setFromMatrix3Column( this, 2 );
		return this;
	}
	setFromMatrix4( m ) {
		const me = m.elements;
		this.set(
			me[ 0 ], me[ 4 ], me[ 8 ],
			me[ 1 ], me[ 5 ], me[ 9 ],
			me[ 2 ], me[ 6 ], me[ 10 ]
		);
		return this;
	}
	multiply( m ) {
		return this.multiplyMatrices( this, m );
	}
	premultiply( m ) {
		return this.multiplyMatrices( m, this );
	}
	multiplyMatrices( a, b ) {
		const ae = a.elements;
		const be = b.elements;
		const te = this.elements;
		const a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];
		const a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];
		const a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];
		const b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];
		const b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];
		const b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];
		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;
		te[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;
		te[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;
		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;
		te[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;
		te[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;
		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;
		te[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;
		te[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;
		return this;
	}
	multiplyScalar( s ) {
		const te = this.elements;
		te[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;
		te[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;
		te[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;
		return this;
	}
	determinant() {
		const te = this.elements;
		const a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],
			d = te[ 3 ], e = te[ 4 ], f = te[ 5 ],
			g = te[ 6 ], h = te[ 7 ], i = te[ 8 ];
		return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
	}
	getInverse( matrix, throwOnDegenerate ) {
		if ( throwOnDegenerate !== undefined ) {
			console.warn( "THREE.Matrix3: .getInverse() can no longer be configured to throw on degenerate." );
		}
		const me = matrix.elements,
			te = this.elements,
			n11 = me[ 0 ], n21 = me[ 1 ], n31 = me[ 2 ],
			n12 = me[ 3 ], n22 = me[ 4 ], n32 = me[ 5 ],
			n13 = me[ 6 ], n23 = me[ 7 ], n33 = me[ 8 ],
			t11 = n33 * n22 - n32 * n23,
			t12 = n32 * n13 - n33 * n12,
			t13 = n23 * n12 - n22 * n13,
			det = n11 * t11 + n21 * t12 + n31 * t13;
		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0 );
		const detInv = 1 / det;
		te[ 0 ] = t11 * detInv;
		te[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;
		te[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;
		te[ 3 ] = t12 * detInv;
		te[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;
		te[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;
		te[ 6 ] = t13 * detInv;
		te[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;
		te[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;
		return this;
	}
	transpose() {
		let tmp;
		const m = this.elements;
		tmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;
		tmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;
		tmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;
		return this;
	}
	getNormalMatrix( matrix4 ) {
		return this.setFromMatrix4( matrix4 ).getInverse( this ).transpose();
	}
	transposeIntoArray( r ) {
		const m = this.elements;
		r[ 0 ] = m[ 0 ];
		r[ 1 ] = m[ 3 ];
		r[ 2 ] = m[ 6 ];
		r[ 3 ] = m[ 1 ];
		r[ 4 ] = m[ 4 ];
		r[ 5 ] = m[ 7 ];
		r[ 6 ] = m[ 2 ];
		r[ 7 ] = m[ 5 ];
		r[ 8 ] = m[ 8 ];
		return this;
	}
	setUvTransform( tx, ty, sx, sy, rotation, cx, cy ) {
		const c = Math.cos( rotation );
		const s = Math.sin( rotation );
		this.set(
			sx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,
			- sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,
			0, 0, 1
		);
	}
	scale( sx, sy ) {
		const te = this.elements;
		te[ 0 ] *= sx; te[ 3 ] *= sx; te[ 6 ] *= sx;
		te[ 1 ] *= sy; te[ 4 ] *= sy; te[ 7 ] *= sy;
		return this;
	}
	rotate( theta ) {
		const c = Math.cos( theta );
		const s = Math.sin( theta );
		const te = this.elements;
		const a11 = te[ 0 ], a12 = te[ 3 ], a13 = te[ 6 ];
		const a21 = te[ 1 ], a22 = te[ 4 ], a23 = te[ 7 ];
		te[ 0 ] = c * a11 + s * a21;
		te[ 3 ] = c * a12 + s * a22;
		te[ 6 ] = c * a13 + s * a23;
		te[ 1 ] = - s * a11 + c * a21;
		te[ 4 ] = - s * a12 + c * a22;
		te[ 7 ] = - s * a13 + c * a23;
		return this;
	}
	translate( tx, ty ) {
		const te = this.elements;
		te[ 0 ] += tx * te[ 2 ]; te[ 3 ] += tx * te[ 5 ]; te[ 6 ] += tx * te[ 8 ];
		te[ 1 ] += ty * te[ 2 ]; te[ 4 ] += ty * te[ 5 ]; te[ 7 ] += ty * te[ 8 ];
		return this;
	}
	equals( matrix ) {
		const te = this.elements;
		const me = matrix.elements;
		for ( let i = 0; i < 9; i ++ ) {
			if ( te[ i ] !== me[ i ] ) return false;
		}
		return true;
	}
	fromArray( array, offset ) {
		if ( offset === undefined ) offset = 0;
		for ( let i = 0; i < 9; i ++ ) {
			this.elements[ i ] = array[ i + offset ];
		}
		return this;
	}
	toArray( array, offset ) {
		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;
		const te = this.elements;
		array[ offset ] = te[ 0 ];
		array[ offset + 1 ] = te[ 1 ];
		array[ offset + 2 ] = te[ 2 ];
		array[ offset + 3 ] = te[ 3 ];
		array[ offset + 4 ] = te[ 4 ];
		array[ offset + 5 ] = te[ 5 ];
		array[ offset + 6 ] = te[ 6 ];
		array[ offset + 7 ] = te[ 7 ];
		array[ offset + 8 ] = te[ 8 ];
		return array;
	}
}
let _canvas;
const ImageUtils = {
	getDataURL: function ( image ) {
		if ( /^data:/i.test( image.src ) ) {
			return image.src;
		}
		if ( typeof HTMLCanvasElement == 'undefined' ) {
			return image.src;
		}
		let canvas;
		if ( image instanceof HTMLCanvasElement ) {
			canvas = image;
		} else {
			if ( _canvas === undefined ) _canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
			_canvas.width = image.width;
			_canvas.height = image.height;
			const context = _canvas.getContext( '2d' );
			if ( image instanceof ImageData ) {
				context.putImageData( image, 0, 0 );
			} else {
				context.drawImage( image, 0, 0, image.width, image.height );
			}
			canvas = _canvas;
		}
		if ( canvas.width > 2048 || canvas.height > 2048 ) {
			return canvas.toDataURL( 'image/jpeg', 0.6 );
		} else {
			return canvas.toDataURL( 'image/png' );
		}
	}
};
let textureId = 0;
function Texture( image, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {
	Object.defineProperty( this, 'id', { value: textureId ++ } );
	this.uuid = MathUtils.generateUUID();
	this.name = '';
	this.image = image !== undefined ? image : Texture.DEFAULT_IMAGE;
	this.mipmaps = [];
	this.mapping = mapping !== undefined ? mapping : Texture.DEFAULT_MAPPING;
	this.wrapS = wrapS !== undefined ? wrapS : ClampToEdgeWrapping;
	this.wrapT = wrapT !== undefined ? wrapT : ClampToEdgeWrapping;
	this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;
	this.minFilter = minFilter !== undefined ? minFilter : LinearMipmapLinearFilter;
	this.anisotropy = anisotropy !== undefined ? anisotropy : 1;
	this.format = format !== undefined ? format : RGBAFormat;
	this.internalFormat = null;
	this.type = type !== undefined ? type : UnsignedByteType;
	this.offset = new Vector2( 0, 0 );
	this.repeat = new Vector2( 1, 1 );
	this.center = new Vector2( 0, 0 );
	this.rotation = 0;
	this.matrixAutoUpdate = true;
	this.matrix = new Matrix3();
	this.generateMipmaps = true;
	this.premultiplyAlpha = false;
	this.flipY = true;
	this.unpackAlignment = 4;
	this.encoding = encoding !== undefined ? encoding : LinearEncoding;
	this.version = 0;
	this.onUpdate = null;
}
Texture.DEFAULT_IMAGE = undefined;
Texture.DEFAULT_MAPPING = UVMapping;
Texture.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
	constructor: Texture,
	isTexture: true,
	updateMatrix: function () {
		this.matrix.setUvTransform( this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y );
	},
	clone: function () {
		return new this.constructor().copy( this );
	},
	copy: function ( source ) {
		this.name = source.name;
		this.image = source.image;
		this.mipmaps = source.mipmaps.slice( 0 );
		this.mapping = source.mapping;
		this.wrapS = source.wrapS;
		this.wrapT = source.wrapT;
		this.magFilter = source.magFilter;
		this.minFilter = source.minFilter;
		this.anisotropy = source.anisotropy;
		this.format = source.format;
		this.internalFormat = source.internalFormat;
		this.type = source.type;
		this.offset.copy( source.offset );
		this.repeat.copy( source.repeat );
		this.center.copy( source.center );
		this.rotation = source.rotation;
		this.matrixAutoUpdate = source.matrixAutoUpdate;
		this.matrix.copy( source.matrix );
		this.generateMipmaps = source.generateMipmaps;
		this.premultiplyAlpha = source.premultiplyAlpha;
		this.flipY = source.flipY;
		this.unpackAlignment = source.unpackAlignment;
		this.encoding = source.encoding;
		return this;
	},
	toJSON: function ( meta ) {
		const isRootObject = ( meta === undefined || typeof meta === 'string' );
		if ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {
			return meta.textures[ this.uuid ];
		}
		const output = {
			metadata: {
				version: 4.5,
				type: 'Texture',
				generator: 'Texture.toJSON'
			},
			uuid: this.uuid,
			name: this.name,
			mapping: this.mapping,
			repeat: [ this.repeat.x, this.repeat.y ],
			offset: [ this.offset.x, this.offset.y ],
			center: [ this.center.x, this.center.y ],
			rotation: this.rotation,
			wrap: [ this.wrapS, this.wrapT ],
			format: this.format,
			type: this.type,
			encoding: this.encoding,
			minFilter: this.minFilter,
			magFilter: this.magFilter,
			anisotropy: this.anisotropy,
			flipY: this.flipY,
			premultiplyAlpha: this.premultiplyAlpha,
			unpackAlignment: this.unpackAlignment
		};
		if ( this.image !== undefined ) {
			const image = this.image;
			if ( image.uuid === undefined ) {
				image.uuid = MathUtils.generateUUID();
			}
			if ( ! isRootObject && meta.images[ image.uuid ] === undefined ) {
				let url;
				if ( Array.isArray( image ) ) {
					url = [];
					for ( let i = 0, l = image.length; i < l; i ++ ) {
						url.push( ImageUtils.getDataURL( image[ i ] ) );
					}
				} else {
					url = ImageUtils.getDataURL( image );
				}
				meta.images[ image.uuid ] = {
					uuid: image.uuid,
					url: url
				};
			}
			output.image = image.uuid;
		}
		if ( ! isRootObject ) {
			meta.textures[ this.uuid ] = output;
		}
		return output;
	},
	dispose: function () {
		this.dispatchEvent( { type: 'dispose' } );
	},
	transformUv: function ( uv ) {
		if ( this.mapping !== UVMapping ) return uv;
		uv.applyMatrix3( this.matrix );
		if ( uv.x < 0 || uv.x > 1 ) {
			switch ( this.wrapS ) {
				case RepeatWrapping:
					uv.x = uv.x - Math.floor( uv.x );
					break;
				case ClampToEdgeWrapping:
					uv.x = uv.x < 0 ? 0 : 1;
					break;
				case MirroredRepeatWrapping:
					if ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {
						uv.x = Math.ceil( uv.x ) - uv.x;
					} else {
						uv.x = uv.x - Math.floor( uv.x );
					}
					break;
			}
		}
		if ( uv.y < 0 || uv.y > 1 ) {
			switch ( this.wrapT ) {
				case RepeatWrapping:
					uv.y = uv.y - Math.floor( uv.y );
					break;
				case ClampToEdgeWrapping:
					uv.y = uv.y < 0 ? 0 : 1;
					break;
				case MirroredRepeatWrapping:
					if ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {
						uv.y = Math.ceil( uv.y ) - uv.y;
					} else {
						uv.y = uv.y - Math.floor( uv.y );
					}
					break;
			}
		}
		if ( this.flipY ) {
			uv.y = 1 - uv.y;
		}
		return uv;
	}
} );
Object.defineProperty( Texture.prototype, "needsUpdate", {
	set: function ( value ) {
		if ( value === true ) this.version ++;
	}
} );
class Vector4 {
	constructor( x = 0, y = 0, z = 0, w = 1 ) {
		Object.defineProperty( this, 'isVector4', { value: true } );
		this.x = x;
		this.y = y;
		this.z = z;
		this.w = w;
	}
	get width() {
		return this.z;
	}
	set width( value ) {
		this.z = value;
	}
	get height() {
		return this.w;
	}
	set height( value ) {
		this.w = value;
	}
	set( x, y, z, w ) {
		this.x = x;
		this.y = y;
		this.z = z;
		this.w = w;
		return this;
	}
	setScalar( scalar ) {
		this.x = scalar;
		this.y = scalar;
		this.z = scalar;
		this.w = scalar;
		return this;
	}
	setX( x ) {
		this.x = x;
		return this;
	}
	setY( y ) {
		this.y = y;
		return this;
	}
	setZ( z ) {
		this.z = z;
		return this;
	}
	setW( w ) {
		this.w = w;
		return this;
	}
	setComponent( index, value ) {
		switch ( index ) {
			case 0: this.x = value; break;
			case 1: this.y = value; break;
			case 2: this.z = value; break;
			case 3: this.w = value; break;
			default: throw new Error( 'index is out of range: ' + index );
		}
		return this;
	}
	getComponent( index ) {
		switch ( index ) {
			case 0: return this.x;
			case 1: return this.y;
			case 2: return this.z;
			case 3: return this.w;
			default: throw new Error( 'index is out of range: ' + index );
		}
	}
	clone() {
		return new this.constructor( this.x, this.y, this.z, this.w );
	}
	copy( v ) {
		this.x = v.x;
		this.y = v.y;
		this.z = v.z;
		this.w = ( v.w !== undefined ) ? v.w : 1;
		return this;
	}
	add( v, w ) {
		if ( w !== undefined ) {
			console.warn( 'THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
			return this.addVectors( v, w );
		}
		this.x += v.x;
		this.y += v.y;
		this.z += v.z;
		this.w += v.w;
		return this;
	}
	addScalar( s ) {
		this.x += s;
		this.y += s;
		this.z += s;
		this.w += s;
		return this;
	}
	addVectors( a, b ) {
		this.x = a.x + b.x;
		this.y = a.y + b.y;
		this.z = a.z + b.z;
		this.w = a.w + b.w;
		return this;
	}
	addScaledVector( v, s ) {
		this.x += v.x * s;
		this.y += v.y * s;
		this.z += v.z * s;
		this.w += v.w * s;
		return this;
	}
	sub( v, w ) {
		if ( w !== undefined ) {
			console.warn( 'THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
			return this.subVectors( v, w );
		}
		this.x -= v.x;
		this.y -= v.y;
		this.z -= v.z;
		this.w -= v.w;
		return this;
	}
	subScalar( s ) {
		this.x -= s;
		this.y -= s;
		this.z -= s;
		this.w -= s;
		return this;
	}
	subVectors( a, b ) {
		this.x = a.x - b.x;
		this.y = a.y - b.y;
		this.z = a.z - b.z;
		this.w = a.w - b.w;
		return this;
	}
	multiplyScalar( scalar ) {
		this.x *= scalar;
		this.y *= scalar;
		this.z *= scalar;
		this.w *= scalar;
		return this;
	}
	applyMatrix4( m ) {
		const x = this.x, y = this.y, z = this.z, w = this.w;
		const e = m.elements;
		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;
		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;
		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;
		this.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;
		return this;
	}
	divideScalar( scalar ) {
		return this.multiplyScalar( 1 / scalar );
	}
	setAxisAngleFromQuaternion( q ) {
		this.w = 2 * Math.acos( q.w );
		const s = Math.sqrt( 1 - q.w * q.w );
		if ( s < 0.0001 ) {
			this.x = 1;
			this.y = 0;
			this.z = 0;
		} else {
			this.x = q.x / s;
			this.y = q.y / s;
			this.z = q.z / s;
		}
		return this;
	}
	setAxisAngleFromRotationMatrix( m ) {
		let angle, x, y, z;
		const epsilon = 0.01,
			epsilon2 = 0.1,
			te = m.elements,
			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];
		if ( ( Math.abs( m12 - m21 ) < epsilon ) &&
		     ( Math.abs( m13 - m31 ) < epsilon ) &&
		     ( Math.abs( m23 - m32 ) < epsilon ) ) {
			if ( ( Math.abs( m12 + m21 ) < epsilon2 ) &&
			     ( Math.abs( m13 + m31 ) < epsilon2 ) &&
			     ( Math.abs( m23 + m32 ) < epsilon2 ) &&
			     ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {
				this.set( 1, 0, 0, 0 );
				return this;
			}
			angle = Math.PI;
			const xx = ( m11 + 1 ) / 2;
			const yy = ( m22 + 1 ) / 2;
			const zz = ( m33 + 1 ) / 2;
			const xy = ( m12 + m21 ) / 4;
			const xz = ( m13 + m31 ) / 4;
			const yz = ( m23 + m32 ) / 4;
			if ( ( xx > yy ) && ( xx > zz ) ) {
				if ( xx < epsilon ) {
					x = 0;
					y = 0.707106781;
					z = 0.707106781;
				} else {
					x = Math.sqrt( xx );
					y = xy / x;
					z = xz / x;
				}
			} else if ( yy > zz ) {
				if ( yy < epsilon ) {
					x = 0.707106781;
					y = 0;
					z = 0.707106781;
				} else {
					y = Math.sqrt( yy );
					x = xy / y;
					z = yz / y;
				}
			} else {
				if ( zz < epsilon ) {
					x = 0.707106781;
					y = 0.707106781;
					z = 0;
				} else {
					z = Math.sqrt( zz );
					x = xz / z;
					y = yz / z;
				}
			}
			this.set( x, y, z, angle );
			return this;
		}
		let s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 ) +
			( m13 - m31 ) * ( m13 - m31 ) +
			( m21 - m12 ) * ( m21 - m12 ) );
		if ( Math.abs( s ) < 0.001 ) s = 1;
		this.x = ( m32 - m23 ) / s;
		this.y = ( m13 - m31 ) / s;
		this.z = ( m21 - m12 ) / s;
		this.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );
		return this;
	}
	min( v ) {
		this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );
		this.z = Math.min( this.z, v.z );
		this.w = Math.min( this.w, v.w );
		return this;
	}
	max( v ) {
		this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );
		this.z = Math.max( this.z, v.z );
		this.w = Math.max( this.w, v.w );
		return this;
	}
	clamp( min, max ) {
		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
		this.z = Math.max( min.z, Math.min( max.z, this.z ) );
		this.w = Math.max( min.w, Math.min( max.w, this.w ) );
		return this;
	}
	clampScalar( minVal, maxVal ) {
		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
		this.w = Math.max( minVal, Math.min( maxVal, this.w ) );
		return this;
	}
	clampLength( min, max ) {
		const length = this.length();
		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
	}
	floor() {
		this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );
		this.z = Math.floor( this.z );
		this.w = Math.floor( this.w );
		return this;
	}
	ceil() {
		this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );
		this.z = Math.ceil( this.z );
		this.w = Math.ceil( this.w );
		return this;
	}
	round() {
		this.x = Math.round( this.x );
		this.y = Math.round( this.y );
		this.z = Math.round( this.z );
		this.w = Math.round( this.w );
		return this;
	}
	roundToZero() {
		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
		this.w = ( this.w < 0 ) ? Math.ceil( this.w ) : Math.floor( this.w );
		return this;
	}
	negate() {
		this.x = - this.x;
		this.y = - this.y;
		this.z = - this.z;
		this.w = - this.w;
		return this;
	}
	dot( v ) {
		return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;
	}
	lengthSq() {
		return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;
	}
	length() {
		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );
	}
	manhattanLength() {
		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );
	}
	normalize() {
		return this.divideScalar( this.length() || 1 );
	}
	setLength( length ) {
		return this.normalize().multiplyScalar( length );
	}
	lerp( v, alpha ) {
		this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;
		this.z += ( v.z - this.z ) * alpha;
		this.w += ( v.w - this.w ) * alpha;
		return this;
	}
	lerpVectors( v1, v2, alpha ) {
		this.x = v1.x + ( v2.x - v1.x ) * alpha;
		this.y = v1.y + ( v2.y - v1.y ) * alpha;
		this.z = v1.z + ( v2.z - v1.z ) * alpha;
		this.w = v1.w + ( v2.w - v1.w ) * alpha;
		return this;
	}
	equals( v ) {
		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );
	}
	fromArray( array, offset ) {
		if ( offset === undefined ) offset = 0;
		this.x = array[ offset ];
		this.y = array[ offset + 1 ];
		this.z = array[ offset + 2 ];
		this.w = array[ offset + 3 ];
		return this;
	}
	toArray( array, offset ) {
		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;
		array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;
		array[ offset + 2 ] = this.z;
		array[ offset + 3 ] = this.w;
		return array;
	}
	fromBufferAttribute( attribute, index, offset ) {
		if ( offset !== undefined ) {
			console.warn( 'THREE.Vector4: offset has been removed from .fromBufferAttribute().' );
		}
		this.x = attribute.getX( index );
		this.y = attribute.getY( index );
		this.z = attribute.getZ( index );
		this.w = attribute.getW( index );
		return this;
	}
	random() {
		this.x = Math.random();
		this.y = Math.random();
		this.z = Math.random();
		this.w = Math.random();
		return this;
	}
}
function WebGLRenderTarget( width, height, options ) {
	this.width = width;
	this.height = height;
	this.scissor = new Vector4( 0, 0, width, height );
	this.scissorTest = false;
	this.viewport = new Vector4( 0, 0, width, height );
	options = options || {};
	this.texture = new Texture( undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );
	this.texture.image = {};
	this.texture.image.width = width;
	this.texture.image.height = height;
	this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
	this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;
	this.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;
	this.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : false;
	this.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;
}
WebGLRenderTarget.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
	constructor: WebGLRenderTarget,
	isWebGLRenderTarget: true,
	setSize: function ( width, height ) {
		if ( this.width !== width || this.height !== height ) {
			this.width = width;
			this.height = height;
			this.texture.image.width = width;
			this.texture.image.height = height;
			this.dispose();
		}
		this.viewport.set( 0, 0, width, height );
		this.scissor.set( 0, 0, width, height );
	},
	clone: function () {
		return new this.constructor().copy( this );
	},
	copy: function ( source ) {
		this.width = source.width;
		this.height = source.height;
		this.viewport.copy( source.viewport );
		this.texture = source.texture.clone();
		this.depthBuffer = source.depthBuffer;
		this.stencilBuffer = source.stencilBuffer;
		this.depthTexture = source.depthTexture;
		return this;
	},
	dispose: function () {
		this.dispatchEvent( { type: 'dispose' } );
	}
} );
function WebGLMultisampleRenderTarget( width, height, options ) {
	WebGLRenderTarget.call( this, width, height, options );
	this.samples = 4;
}
WebGLMultisampleRenderTarget.prototype = Object.assign( Object.create( WebGLRenderTarget.prototype ), {
	constructor: WebGLMultisampleRenderTarget,
	isWebGLMultisampleRenderTarget: true,
	copy: function ( source ) {
		WebGLRenderTarget.prototype.copy.call( this, source );
		this.samples = source.samples;
		return this;
	}
} );
class Quaternion {
	constructor( x = 0, y = 0, z = 0, w = 1 ) {
		Object.defineProperty( this, 'isQuaternion', { value: true } );
		this._x = x;
		this._y = y;
		this._z = z;
		this._w = w;
	}
	static slerp( qa, qb, qm, t ) {
		return qm.copy( qa ).slerp( qb, t );
	}
	static slerpFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {
		let x0 = src0[ srcOffset0 + 0 ],
			y0 = src0[ srcOffset0 + 1 ],
			z0 = src0[ srcOffset0 + 2 ],
			w0 = src0[ srcOffset0 + 3 ];
		const x1 = src1[ srcOffset1 + 0 ],
			y1 = src1[ srcOffset1 + 1 ],
			z1 = src1[ srcOffset1 + 2 ],
			w1 = src1[ srcOffset1 + 3 ];
		if ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {
			let s = 1 - t;
			const cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
				dir = ( cos >= 0 ? 1 : - 1 ),
				sqrSin = 1 - cos * cos;
			if ( sqrSin > Number.EPSILON ) {
				const sin = Math.sqrt( sqrSin ),
					len = Math.atan2( sin, cos * dir );
				s = Math.sin( s * len ) / sin;
				t = Math.sin( t * len ) / sin;
			}
			const tDir = t * dir;
			x0 = x0 * s + x1 * tDir;
			y0 = y0 * s + y1 * tDir;
			z0 = z0 * s + z1 * tDir;
			w0 = w0 * s + w1 * tDir;
			if ( s === 1 - t ) {
				const f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );
				x0 *= f;
				y0 *= f;
				z0 *= f;
				w0 *= f;
			}
		}
		dst[ dstOffset ] = x0;
		dst[ dstOffset + 1 ] = y0;
		dst[ dstOffset + 2 ] = z0;
		dst[ dstOffset + 3 ] = w0;
	}
	static multiplyQuaternionsFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1 ) {
		const x0 = src0[ srcOffset0 ];
		const y0 = src0[ srcOffset0 + 1 ];
		const z0 = src0[ srcOffset0 + 2 ];
		const w0 = src0[ srcOffset0 + 3 ];
		const x1 = src1[ srcOffset1 ];
		const y1 = src1[ srcOffset1 + 1 ];
		const z1 = src1[ srcOffset1 + 2 ];
		const w1 = src1[ srcOffset1 + 3 ];
		dst[ dstOffset ] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;
		dst[ dstOffset + 1 ] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;
		dst[ dstOffset + 2 ] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;
		dst[ dstOffset + 3 ] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;
		return dst;
	}
	get x() {
		return this._x;
	}
	set x( value ) {
		this._x = value;
		this._onChangeCallback();
	}
	get y() {
		return this._y;
	}
	set y( value ) {
		this._y = value;
		this._onChangeCallback();
	}
	get z() {
		return this._z;
	}
	set z( value ) {
		this._z = value;
		this._onChangeCallback();
	}
	get w() {
		return this._w;
	}
	set w( value ) {
		this._w = value;
		this._onChangeCallback();
	}
	set( x, y, z, w ) {
		this._x = x;
		this._y = y;
		this._z = z;
		this._w = w;
		this._onChangeCallback();
		return this;
	}
	clone() {
		return new this.constructor( this._x, this._y, this._z, this._w );
	}
	copy( quaternion ) {
		this._x = quaternion.x;
		this._y = quaternion.y;
		this._z = quaternion.z;
		this._w = quaternion.w;
		this._onChangeCallback();
		return this;
	}
	setFromEuler( euler, update ) {
		if ( ! ( euler && euler.isEuler ) ) {
			throw new Error( 'THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.' );
		}
		const x = euler._x, y = euler._y, z = euler._z, order = euler._order;
		const cos = Math.cos;
		const sin = Math.sin;
		const c1 = cos( x / 2 );
		const c2 = cos( y / 2 );
		const c3 = cos( z / 2 );
		const s1 = sin( x / 2 );
		const s2 = sin( y / 2 );
		const s3 = sin( z / 2 );
		switch ( order ) {
			case 'XYZ':
				this._x = s1 * c2 * c3 + c1 * s2 * s3;
				this._y = c1 * s2 * c3 - s1 * c2 * s3;
				this._z = c1 * c2 * s3 + s1 * s2 * c3;
				this._w = c1 * c2 * c3 - s1 * s2 * s3;
				break;
			case 'YXZ':
				this._x = s1 * c2 * c3 + c1 * s2 * s3;
				this._y = c1 * s2 * c3 - s1 * c2 * s3;
				this._z = c1 * c2 * s3 - s1 * s2 * c3;
				this._w = c1 * c2 * c3 + s1 * s2 * s3;
				break;
			case 'ZXY':
				this._x = s1 * c2 * c3 - c1 * s2 * s3;
				this._y = c1 * s2 * c3 + s1 * c2 * s3;
				this._z = c1 * c2 * s3 + s1 * s2 * c3;
				this._w = c1 * c2 * c3 - s1 * s2 * s3;
				break;
			case 'ZYX':
				this._x = s1 * c2 * c3 - c1 * s2 * s3;
				this._y = c1 * s2 * c3 + s1 * c2 * s3;
				this._z = c1 * c2 * s3 - s1 * s2 * c3;
				this._w = c1 * c2 * c3 + s1 * s2 * s3;
				break;
			case 'YZX':
				this._x = s1 * c2 * c3 + c1 * s2 * s3;
				this._y = c1 * s2 * c3 + s1 * c2 * s3;
				this._z = c1 * c2 * s3 - s1 * s2 * c3;
				this._w = c1 * c2 * c3 - s1 * s2 * s3;
				break;
			case 'XZY':
				this._x = s1 * c2 * c3 - c1 * s2 * s3;
				this._y = c1 * s2 * c3 - s1 * c2 * s3;
				this._z = c1 * c2 * s3 + s1 * s2 * c3;
				this._w = c1 * c2 * c3 + s1 * s2 * s3;
				break;
			default:
				console.warn( 'THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order );
		}
		if ( update !== false ) this._onChangeCallback();
		return this;
	}
	setFromAxisAngle( axis, angle ) {
		const halfAngle = angle / 2, s = Math.sin( halfAngle );
		this._x = axis.x * s;
		this._y = axis.y * s;
		this._z = axis.z * s;
		this._w = Math.cos( halfAngle );
		this._onChangeCallback();
		return this;
	}
	setFromRotationMatrix( m ) {
		const te = m.elements,
			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],
			trace = m11 + m22 + m33;
		if ( trace > 0 ) {
			const s = 0.5 / Math.sqrt( trace + 1.0 );
			this._w = 0.25 / s;
			this._x = ( m32 - m23 ) * s;
			this._y = ( m13 - m31 ) * s;
			this._z = ( m21 - m12 ) * s;
		} else if ( m11 > m22 && m11 > m33 ) {
			const s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );
			this._w = ( m32 - m23 ) / s;
			this._x = 0.25 * s;
			this._y = ( m12 + m21 ) / s;
			this._z = ( m13 + m31 ) / s;
		} else if ( m22 > m33 ) {
			const s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );
			this._w = ( m13 - m31 ) / s;
			this._x = ( m12 + m21 ) / s;
			this._y = 0.25 * s;
			this._z = ( m23 + m32 ) / s;
		} else {
			const s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );
			this._w = ( m21 - m12 ) / s;
			this._x = ( m13 + m31 ) / s;
			this._y = ( m23 + m32 ) / s;
			this._z = 0.25 * s;
		}
		this._onChangeCallback();
		return this;
	}
	setFromUnitVectors( vFrom, vTo ) {
		const EPS = 0.000001;
		let r = vFrom.dot( vTo ) + 1;
		if ( r < EPS ) {
			r = 0;
			if ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {
				this._x = - vFrom.y;
				this._y = vFrom.x;
				this._z = 0;
				this._w = r;
			} else {
				this._x = 0;
				this._y = - vFrom.z;
				this._z = vFrom.y;
				this._w = r;
			}
		} else {
			this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
			this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
			this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
			this._w = r;
		}
		return this.normalize();
	}
	angleTo( q ) {
		return 2 * Math.acos( Math.abs( MathUtils.clamp( this.dot( q ), - 1, 1 ) ) );
	}
	rotateTowards( q, step ) {
		const angle = this.angleTo( q );
		if ( angle === 0 ) return this;
		const t = Math.min( 1, step / angle );
		this.slerp( q, t );
		return this;
	}
	identity() {
		return this.set( 0, 0, 0, 1 );
	}
	inverse() {
		return this.conjugate();
	}
	conjugate() {
		this._x *= - 1;
		this._y *= - 1;
		this._z *= - 1;
		this._onChangeCallback();
		return this;
	}
	dot( v ) {
		return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;
	}
	lengthSq() {
		return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;
	}
	length() {
		return Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );
	}
	normalize() {
		let l = this.length();
		if ( l === 0 ) {
			this._x = 0;
			this._y = 0;
			this._z = 0;
			this._w = 1;
		} else {
			l = 1 / l;
			this._x = this._x * l;
			this._y = this._y * l;
			this._z = this._z * l;
			this._w = this._w * l;
		}
		this._onChangeCallback();
		return this;
	}
	multiply( q, p ) {
		if ( p !== undefined ) {
			console.warn( 'THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.' );
			return this.multiplyQuaternions( q, p );
		}
		return this.multiplyQuaternions( this, q );
	}
	premultiply( q ) {
		return this.multiplyQuaternions( q, this );
	}
	multiplyQuaternions( a, b ) {
		const qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;
		const qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;
		this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
		this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
		this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
		this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;
		this._onChangeCallback();
		return this;
	}
	slerp( qb, t ) {
		if ( t === 0 ) return this;
		if ( t === 1 ) return this.copy( qb );
		const x = this._x, y = this._y, z = this._z, w = this._w;
		let cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;
		if ( cosHalfTheta < 0 ) {
			this._w = - qb._w;
			this._x = - qb._x;
			this._y = - qb._y;
			this._z = - qb._z;
			cosHalfTheta = - cosHalfTheta;
		} else {
			this.copy( qb );
		}
		if ( cosHalfTheta >= 1.0 ) {
			this._w = w;
			this._x = x;
			this._y = y;
			this._z = z;
			return this;
		}
		const sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;
		if ( sqrSinHalfTheta <= Number.EPSILON ) {
			const s = 1 - t;
			this._w = s * w + t * this._w;
			this._x = s * x + t * this._x;
			this._y = s * y + t * this._y;
			this._z = s * z + t * this._z;
			this.normalize();
			this._onChangeCallback();
			return this;
		}
		const sinHalfTheta = Math.sqrt( sqrSinHalfTheta );
		const halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );
		const ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,
			ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;
		this._w = ( w * ratioA + this._w * ratioB );
		this._x = ( x * ratioA + this._x * ratioB );
		this._y = ( y * ratioA + this._y * ratioB );
		this._z = ( z * ratioA + this._z * ratioB );
		this._onChangeCallback();
		return this;
	}
	equals( quaternion ) {
		return ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );
	}
	fromArray( array, offset ) {
		if ( offset === undefined ) offset = 0;
		this._x = array[ offset ];
		this._y = array[ offset + 1 ];
		this._z = array[ offset + 2 ];
		this._w = array[ offset + 3 ];
		this._onChangeCallback();
		return this;
	}
	toArray( array, offset ) {
		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;
		array[ offset ] = this._x;
		array[ offset + 1 ] = this._y;
		array[ offset + 2 ] = this._z;
		array[ offset + 3 ] = this._w;
		return array;
	}
	fromBufferAttribute( attribute, index ) {
		this._x = attribute.getX( index );
		this._y = attribute.getY( index );
		this._z = attribute.getZ( index );
		this._w = attribute.getW( index );
		return this;
	}
	_onChange( callback ) {
		this._onChangeCallback = callback;
		return this;
	}
	_onChangeCallback() {}
}
class Vector3 {
	constructor( x = 0, y = 0, z = 0 ) {
		Object.defineProperty( this, 'isVector3', { value: true } );
		this.x = x;
		this.y = y;
		this.z = z;
	}
	set( x, y, z ) {
		if ( z === undefined ) z = this.z;
		this.x = x;
		this.y = y;
		this.z = z;
		return this;
	}
	setScalar( scalar ) {
		this.x = scalar;
		this.y = scalar;
		this.z = scalar;
		return this;
	}
	setX( x ) {
		this.x = x;
		return this;
	}
	setY( y ) {
		this.y = y;
		return this;
	}
	setZ( z ) {
		this.z = z;
		return this;
	}
	setComponent( index, value ) {
		switch ( index ) {
			case 0: this.x = value; break;
			case 1: this.y = value; break;
			case 2: this.z = value; break;
			default: throw new Error( 'index is out of range: ' + index );
		}
		return this;
	}
	getComponent( index ) {
		switch ( index ) {
			case 0: return this.x;
			case 1: return this.y;
			case 2: return this.z;
			default: throw new Error( 'index is out of range: ' + index );
		}
	}
	clone() {
		return new this.constructor( this.x, this.y, this.z );
	}
	copy( v ) {
		this.x = v.x;
		this.y = v.y;
		this.z = v.z;
		return this;
	}
	add( v, w ) {
		if ( w !== undefined ) {
			console.warn( 'THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
			return this.addVectors( v, w );
		}
		this.x += v.x;
		this.y += v.y;
		this.z += v.z;
		return this;
	}
	addScalar( s ) {
		this.x += s;
		this.y += s;
		this.z += s;
		return this;
	}
	addVectors( a, b ) {
		this.x = a.x + b.x;
		this.y = a.y + b.y;
		this.z = a.z + b.z;
		return this;
	}
	addScaledVector( v, s ) {
		this.x += v.x * s;
		this.y += v.y * s;
		this.z += v.z * s;
		return this;
	}
	sub( v, w ) {
		if ( w !== undefined ) {
			console.warn( 'THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
			return this.subVectors( v, w );
		}
		this.x -= v.x;
		this.y -= v.y;
		this.z -= v.z;
		return this;
	}
	subScalar( s ) {
		this.x -= s;
		this.y -= s;
		this.z -= s;
		return this;
	}
	subVectors( a, b ) {
		this.x = a.x - b.x;
		this.y = a.y - b.y;
		this.z = a.z - b.z;
		return this;
	}
	multiply( v, w ) {
		if ( w !== undefined ) {
			console.warn( 'THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.' );
			return this.multiplyVectors( v, w );
		}
		this.x *= v.x;
		this.y *= v.y;
		this.z *= v.z;
		return this;
	}
	multiplyScalar( scalar ) {
		this.x *= scalar;
		this.y *= scalar;
		this.z *= scalar;
		return this;
	}
	multiplyVectors( a, b ) {
		this.x = a.x * b.x;
		this.y = a.y * b.y;
		this.z = a.z * b.z;
		return this;
	}
	applyEuler( euler ) {
		if ( ! ( euler && euler.isEuler ) ) {
			console.error( 'THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.' );
		}
		return this.applyQuaternion( _quaternion.setFromEuler( euler ) );
	}
	applyAxisAngle( axis, angle ) {
		return this.applyQuaternion( _quaternion.setFromAxisAngle( axis, angle ) );
	}
	applyMatrix3( m ) {
		const x = this.x, y = this.y, z = this.z;
		const e = m.elements;
		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;
		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;
		this.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;
		return this;
	}
	applyNormalMatrix( m ) {
		return this.applyMatrix3( m ).normalize();
	}
	applyMatrix4( m ) {
		const x = this.x, y = this.y, z = this.z;
		const e = m.elements;
		const w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );
		this.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;
		this.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;
		this.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;
		return this;
	}
	applyQuaternion( q ) {
		const x = this.x, y = this.y, z = this.z;
		const qx = q.x, qy = q.y, qz = q.z, qw = q.w;
		const ix = qw * x + qy * z - qz * y;
		const iy = qw * y + qz * x - qx * z;
		const iz = qw * z + qx * y - qy * x;
		const iw = - qx * x - qy * y - qz * z;
		this.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;
		this.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;
		this.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;
		return this;
	}
	project( camera ) {
		return this.applyMatrix4( camera.matrixWorldInverse ).applyMatrix4( camera.projectionMatrix );
	}
	unproject( camera ) {
		return this.applyMatrix4( camera.projectionMatrixInverse ).applyMatrix4( camera.matrixWorld );
	}
	transformDirection( m ) {
		const x = this.x, y = this.y, z = this.z;
		const e = m.elements;
		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;
		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;
		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;
		return this.normalize();
	}
	divide( v ) {
		this.x /= v.x;
		this.y /= v.y;
		this.z /= v.z;
		return this;
	}
	divideScalar( scalar ) {
		return this.multiplyScalar( 1 / scalar );
	}
	min( v ) {
		this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );
		this.z = Math.min( this.z, v.z );
		return this;
	}
	max( v ) {
		this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );
		this.z = Math.max( this.z, v.z );
		return this;
	}
	clamp( min, max ) {
		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
		this.z = Math.max( min.z, Math.min( max.z, this.z ) );
		return this;
	}
	clampScalar( minVal, maxVal ) {
		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
		return this;
	}
	clampLength( min, max ) {
		const length = this.length();
		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
	}
	floor() {
		this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );
		this.z = Math.floor( this.z );
		return this;
	}
	ceil() {
		this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );
		this.z = Math.ceil( this.z );
		return this;
	}
	round() {
		this.x = Math.round( this.x );
		this.y = Math.round( this.y );
		this.z = Math.round( this.z );
		return this;
	}
	roundToZero() {
		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
		return this;
	}
	negate() {
		this.x = - this.x;
		this.y = - this.y;
		this.z = - this.z;
		return this;
	}
	dot( v ) {
		return this.x * v.x + this.y * v.y + this.z * v.z;
	}
	lengthSq() {
		return this.x * this.x + this.y * this.y + this.z * this.z;
	}
	length() {
		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );
	}
	manhattanLength() {
		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );
	}
	normalize() {
		return this.divideScalar( this.length() || 1 );
	}
	setLength( length ) {
		return this.normalize().multiplyScalar( length );
	}
	lerp( v, alpha ) {
		this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;
		this.z += ( v.z - this.z ) * alpha;
		return this;
	}
	lerpVectors( v1, v2, alpha ) {
		this.x = v1.x + ( v2.x - v1.x ) * alpha;
		this.y = v1.y + ( v2.y - v1.y ) * alpha;
		this.z = v1.z + ( v2.z - v1.z ) * alpha;
		return this;
	}
	cross( v, w ) {
		if ( w !== undefined ) {
			console.warn( 'THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.' );
			return this.crossVectors( v, w );
		}
		return this.crossVectors( this, v );
	}
	crossVectors( a, b ) {
		const ax = a.x, ay = a.y, az = a.z;
		const bx = b.x, by = b.y, bz = b.z;
		this.x = ay * bz - az * by;
		this.y = az * bx - ax * bz;
		this.z = ax * by - ay * bx;
		return this;
	}
	projectOnVector( v ) {
		const denominator = v.lengthSq();
		if ( denominator === 0 ) return this.set( 0, 0, 0 );
		const scalar = v.dot( this ) / denominator;
		return this.copy( v ).multiplyScalar( scalar );
	}
	projectOnPlane( planeNormal ) {
		_vector.copy( this ).projectOnVector( planeNormal );
		return this.sub( _vector );
	}
	reflect( normal ) {
		return this.sub( _vector.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );
	}
	angleTo( v ) {
		const denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );
		if ( denominator === 0 ) return Math.PI / 2;
		const theta = this.dot( v ) / denominator;
		return Math.acos( MathUtils.clamp( theta, - 1, 1 ) );
	}
	distanceTo( v ) {
		return Math.sqrt( this.distanceToSquared( v ) );
	}
	distanceToSquared( v ) {
		const dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;
		return dx * dx + dy * dy + dz * dz;
	}
	manhattanDistanceTo( v ) {
		return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );
	}
	setFromSpherical( s ) {
		return this.setFromSphericalCoords( s.radius, s.phi, s.theta );
	}
	setFromSphericalCoords( radius, phi, theta ) {
		const sinPhiRadius = Math.sin( phi ) * radius;
		this.x = sinPhiRadius * Math.sin( theta );
		this.y = Math.cos( phi ) * radius;
		this.z = sinPhiRadius * Math.cos( theta );
		return this;
	}
	setFromCylindrical( c ) {
		return this.setFromCylindricalCoords( c.radius, c.theta, c.y );
	}
	setFromCylindricalCoords( radius, theta, y ) {
		this.x = radius * Math.sin( theta );
		this.y = y;
		this.z = radius * Math.cos( theta );
		return this;
	}
	setFromMatrixPosition( m ) {
		const e = m.elements;
		this.x = e[ 12 ];
		this.y = e[ 13 ];
		this.z = e[ 14 ];
		return this;
	}
	setFromMatrixScale( m ) {
		const sx = this.setFromMatrixColumn( m, 0 ).length();
		const sy = this.setFromMatrixColumn( m, 1 ).length();
		const sz = this.setFromMatrixColumn( m, 2 ).length();
		this.x = sx;
		this.y = sy;
		this.z = sz;
		return this;
	}
	setFromMatrixColumn( m, index ) {
		return this.fromArray( m.elements, index * 4 );
	}
	setFromMatrix3Column( m, index ) {
		return this.fromArray( m.elements, index * 3 );
	}
	equals( v ) {
		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );
	}
	fromArray( array, offset ) {
		if ( offset === undefined ) offset = 0;
		this.x = array[ offset ];
		this.y = array[ offset + 1 ];
		this.z = array[ offset + 2 ];
		return this;
	}
	toArray( array, offset ) {
		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;
		array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;
		array[ offset + 2 ] = this.z;
		return array;
	}
	fromBufferAttribute( attribute, index, offset ) {
		if ( offset !== undefined ) {
			console.warn( 'THREE.Vector3: offset has been removed from .fromBufferAttribute().' );
		}
		this.x = attribute.getX( index );
		this.y = attribute.getY( index );
		this.z = attribute.getZ( index );
		return this;
	}
	random() {
		this.x = Math.random();
		this.y = Math.random();
		this.z = Math.random();
		return this;
	}
}
const _vector = new Vector3();
const _quaternion = new Quaternion();
class Box3 {
	constructor( min, max ) {
		Object.defineProperty( this, 'isBox3', { value: true } );
		this.min = ( min !== undefined ) ? min : new Vector3( + Infinity, + Infinity, + Infinity );
		this.max = ( max !== undefined ) ? max : new Vector3( - Infinity, - Infinity, - Infinity );
	}
	set( min, max ) {
		this.min.copy( min );
		this.max.copy( max );
		return this;
	}
	setFromArray( array ) {
		let minX = + Infinity;
		let minY = + Infinity;
		let minZ = + Infinity;
		let maxX = - Infinity;
		let maxY = - Infinity;
		let maxZ = - Infinity;
		for ( let i = 0, l = array.length; i < l; i += 3 ) {
			const x = array[ i ];
			const y = array[ i + 1 ];
			const z = array[ i + 2 ];
			if ( x < minX ) minX = x;
			if ( y < minY ) minY = y;
			if ( z < minZ ) minZ = z;
			if ( x > maxX ) maxX = x;
			if ( y > maxY ) maxY = y;
			if ( z > maxZ ) maxZ = z;
		}
		this.min.set( minX, minY, minZ );
		this.max.set( maxX, maxY, maxZ );
		return this;
	}
	setFromBufferAttribute( attribute ) {
		let minX = + Infinity;
		let minY = + Infinity;
		let minZ = + Infinity;
		let maxX = - Infinity;
		let maxY = - Infinity;
		let maxZ = - Infinity;
		for ( let i = 0, l = attribute.count; i < l; i ++ ) {
			const x = attribute.getX( i );
			const y = attribute.getY( i );
			const z = attribute.getZ( i );
			if ( x < minX ) minX = x;
			if ( y < minY ) minY = y;
			if ( z < minZ ) minZ = z;
			if ( x > maxX ) maxX = x;
			if ( y > maxY ) maxY = y;
			if ( z > maxZ ) maxZ = z;
		}
		this.min.set( minX, minY, minZ );
		this.max.set( maxX, maxY, maxZ );
		return this;
	}
	setFromPoints( points ) {
		this.makeEmpty();
		for ( let i = 0, il = points.length; i < il; i ++ ) {
			this.expandByPoint( points[ i ] );
		}
		return this;
	}
	setFromCenterAndSize( center, size ) {
		const halfSize = _vector$1.copy( size ).multiplyScalar( 0.5 );
		this.min.copy( center ).sub( halfSize );
		this.max.copy( center ).add( halfSize );
		return this;
	}
	setFromObject( object ) {
		this.makeEmpty();
		return this.expandByObject( object );
	}
	clone() {
		return new this.constructor().copy( this );
	}
	copy( box ) {
		this.min.copy( box.min );
		this.max.copy( box.max );
		return this;
	}
	makeEmpty() {
		this.min.x = this.min.y = this.min.z = + Infinity;
		this.max.x = this.max.y = this.max.z = - Infinity;
		return this;
	}
	isEmpty() {
		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );
	}
	getCenter( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Box3: .getCenter() target is now required' );
			target = new Vector3();
		}
		return this.isEmpty() ? target.set( 0, 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );
	}
	getSize( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Box3: .getSize() target is now required' );
			target = new Vector3();
		}
		return this.isEmpty() ? target.set( 0, 0, 0 ) : target.subVectors( this.max, this.min );
	}
	expandByPoint( point ) {
		this.min.min( point );
		this.max.max( point );
		return this;
	}
	expandByVector( vector ) {
		this.min.sub( vector );
		this.max.add( vector );
		return this;
	}
	expandByScalar( scalar ) {
		this.min.addScalar( - scalar );
		this.max.addScalar( scalar );
		return this;
	}
	expandByObject( object ) {
		object.updateWorldMatrix( false, false );
		const geometry = object.geometry;
		if ( geometry !== undefined ) {
			if ( geometry.boundingBox === null ) {
				geometry.computeBoundingBox();
			}
			_box.copy( geometry.boundingBox );
			_box.applyMatrix4( object.matrixWorld );
			this.union( _box );
		}
		const children = object.children;
		for ( let i = 0, l = children.length; i < l; i ++ ) {
			this.expandByObject( children[ i ] );
		}
		return this;
	}
	containsPoint( point ) {
		return point.x < this.min.x || point.x > this.max.x ||
			point.y < this.min.y || point.y > this.max.y ||
			point.z < this.min.z || point.z > this.max.z ? false : true;
	}
	containsBox( box ) {
		return this.min.x <= box.min.x && box.max.x <= this.max.x &&
			this.min.y <= box.min.y && box.max.y <= this.max.y &&
			this.min.z <= box.min.z && box.max.z <= this.max.z;
	}
	getParameter( point, target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Box3: .getParameter() target is now required' );
			target = new Vector3();
		}
		return target.set(
			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
			( point.y - this.min.y ) / ( this.max.y - this.min.y ),
			( point.z - this.min.z ) / ( this.max.z - this.min.z )
		);
	}
	intersectsBox( box ) {
		return box.max.x < this.min.x || box.min.x > this.max.x ||
			box.max.y < this.min.y || box.min.y > this.max.y ||
			box.max.z < this.min.z || box.min.z > this.max.z ? false : true;
	}
	intersectsSphere( sphere ) {
		this.clampPoint( sphere.center, _vector$1 );
		return _vector$1.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );
	}
	intersectsPlane( plane ) {
		let min, max;
		if ( plane.normal.x > 0 ) {
			min = plane.normal.x * this.min.x;
			max = plane.normal.x * this.max.x;
		} else {
			min = plane.normal.x * this.max.x;
			max = plane.normal.x * this.min.x;
		}
		if ( plane.normal.y > 0 ) {
			min += plane.normal.y * this.min.y;
			max += plane.normal.y * this.max.y;
		} else {
			min += plane.normal.y * this.max.y;
			max += plane.normal.y * this.min.y;
		}
		if ( plane.normal.z > 0 ) {
			min += plane.normal.z * this.min.z;
			max += plane.normal.z * this.max.z;
		} else {
			min += plane.normal.z * this.max.z;
			max += plane.normal.z * this.min.z;
		}
		return ( min <= - plane.constant && max >= - plane.constant );
	}
	intersectsTriangle( triangle ) {
		if ( this.isEmpty() ) {
			return false;
		}
		this.getCenter( _center );
		_extents.subVectors( this.max, _center );
		_v0.subVectors( triangle.a, _center );
		_v1.subVectors( triangle.b, _center );
		_v2.subVectors( triangle.c, _center );
		_f0.subVectors( _v1, _v0 );
		_f1.subVectors( _v2, _v1 );
		_f2.subVectors( _v0, _v2 );
		let axes = [
			0, - _f0.z, _f0.y, 0, - _f1.z, _f1.y, 0, - _f2.z, _f2.y,
			_f0.z, 0, - _f0.x, _f1.z, 0, - _f1.x, _f2.z, 0, - _f2.x,
			- _f0.y, _f0.x, 0, - _f1.y, _f1.x, 0, - _f2.y, _f2.x, 0
		];
		if ( ! satForAxes( axes, _v0, _v1, _v2, _extents ) ) {
			return false;
		}
		axes = [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ];
		if ( ! satForAxes( axes, _v0, _v1, _v2, _extents ) ) {
			return false;
		}
		_triangleNormal.crossVectors( _f0, _f1 );
		axes = [ _triangleNormal.x, _triangleNormal.y, _triangleNormal.z ];
		return satForAxes( axes, _v0, _v1, _v2, _extents );
	}
	clampPoint( point, target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Box3: .clampPoint() target is now required' );
			target = new Vector3();
		}
		return target.copy( point ).clamp( this.min, this.max );
	}
	distanceToPoint( point ) {
		const clampedPoint = _vector$1.copy( point ).clamp( this.min, this.max );
		return clampedPoint.sub( point ).length();
	}
	getBoundingSphere( target ) {
		if ( target === undefined ) {
			console.error( 'THREE.Box3: .getBoundingSphere() target is now required' );
		}
		this.getCenter( target.center );
		target.radius = this.getSize( _vector$1 ).length() * 0.5;
		return target;
	}
	intersect( box ) {
		this.min.max( box.min );
		this.max.min( box.max );
		if ( this.isEmpty() ) this.makeEmpty();
		return this;
	}
	union( box ) {
		this.min.min( box.min );
		this.max.max( box.max );
		return this;
	}
	applyMatrix4( matrix ) {
		if ( this.isEmpty() ) return this;
		_points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix );
		_points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix );
		_points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix );
		_points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix );
		_points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix );
		_points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix );
		_points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix );
		_points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix );
		this.setFromPoints( _points );
		return this;
	}
	translate( offset ) {
		this.min.add( offset );
		this.max.add( offset );
		return this;
	}
	equals( box ) {
		return box.min.equals( this.min ) && box.max.equals( this.max );
	}
}
function satForAxes( axes, v0, v1, v2, extents ) {
	for ( let i = 0, j = axes.length - 3; i <= j; i += 3 ) {
		_testAxis.fromArray( axes, i );
		const r = extents.x * Math.abs( _testAxis.x ) + extents.y * Math.abs( _testAxis.y ) + extents.z * Math.abs( _testAxis.z );
		const p0 = v0.dot( _testAxis );
		const p1 = v1.dot( _testAxis );
		const p2 = v2.dot( _testAxis );
		if ( Math.max( - Math.max( p0, p1, p2 ), Math.min( p0, p1, p2 ) ) > r ) {
			return false;
		}
	}
	return true;
}
const _points = [
	new Vector3(),
	new Vector3(),
	new Vector3(),
	new Vector3(),
	new Vector3(),
	new Vector3(),
	new Vector3(),
	new Vector3()
];
const _vector$1 = new Vector3();
const _box = new Box3();
const _v0 = new Vector3();
const _v1 = new Vector3();
const _v2 = new Vector3();
const _f0 = new Vector3();
const _f1 = new Vector3();
const _f2 = new Vector3();
const _center = new Vector3();
const _extents = new Vector3();
const _triangleNormal = new Vector3();
const _testAxis = new Vector3();
const _box$1 = new Box3();
class Sphere {
	constructor( center, radius ) {
		this.center = ( center !== undefined ) ? center : new Vector3();
		this.radius = ( radius !== undefined ) ? radius : - 1;
	}
	set( center, radius ) {
		this.center.copy( center );
		this.radius = radius;
		return this;
	}
	setFromPoints( points, optionalCenter ) {
		const center = this.center;
		if ( optionalCenter !== undefined ) {
			center.copy( optionalCenter );
		} else {
			_box$1.setFromPoints( points ).getCenter( center );
		}
		let maxRadiusSq = 0;
		for ( let i = 0, il = points.length; i < il; i ++ ) {
			maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );
		}
		this.radius = Math.sqrt( maxRadiusSq );
		return this;
	}
	clone() {
		return new this.constructor().copy( this );
	}
	copy( sphere ) {
		this.center.copy( sphere.center );
		this.radius = sphere.radius;
		return this;
	}
	isEmpty() {
		return ( this.radius < 0 );
	}
	makeEmpty() {
		this.center.set( 0, 0, 0 );
		this.radius = - 1;
		return this;
	}
	containsPoint( point ) {
		return ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );
	}
	distanceToPoint( point ) {
		return ( point.distanceTo( this.center ) - this.radius );
	}
	intersectsSphere( sphere ) {
		const radiusSum = this.radius + sphere.radius;
		return sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );
	}
	intersectsBox( box ) {
		return box.intersectsSphere( this );
	}
	intersectsPlane( plane ) {
		return Math.abs( plane.distanceToPoint( this.center ) ) <= this.radius;
	}
	clampPoint( point, target ) {
		const deltaLengthSq = this.center.distanceToSquared( point );
		if ( target === undefined ) {
			console.warn( 'THREE.Sphere: .clampPoint() target is now required' );
			target = new Vector3();
		}
		target.copy( point );
		if ( deltaLengthSq > ( this.radius * this.radius ) ) {
			target.sub( this.center ).normalize();
			target.multiplyScalar( this.radius ).add( this.center );
		}
		return target;
	}
	getBoundingBox( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Sphere: .getBoundingBox() target is now required' );
			target = new Box3();
		}
		if ( this.isEmpty() ) {
			target.makeEmpty();
			return target;
		}
		target.set( this.center, this.center );
		target.expandByScalar( this.radius );
		return target;
	}
	applyMatrix4( matrix ) {
		this.center.applyMatrix4( matrix );
		this.radius = this.radius * matrix.getMaxScaleOnAxis();
		return this;
	}
	translate( offset ) {
		this.center.add( offset );
		return this;
	}
	equals( sphere ) {
		return sphere.center.equals( this.center ) && ( sphere.radius === this.radius );
	}
}
const _vector$2 = new Vector3();
const _segCenter = new Vector3();
const _segDir = new Vector3();
const _diff = new Vector3();
const _edge1 = new Vector3();
const _edge2 = new Vector3();
const _normal = new Vector3();
class Ray {
	constructor( origin, direction ) {
		this.origin = ( origin !== undefined ) ? origin : new Vector3();
		this.direction = ( direction !== undefined ) ? direction : new Vector3( 0, 0, - 1 );
	}
	set( origin, direction ) {
		this.origin.copy( origin );
		this.direction.copy( direction );
		return this;
	}
	clone() {
		return new this.constructor().copy( this );
	}
	copy( ray ) {
		this.origin.copy( ray.origin );
		this.direction.copy( ray.direction );
		return this;
	}
	at( t, target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Ray: .at() target is now required' );
			target = new Vector3();
		}
		return target.copy( this.direction ).multiplyScalar( t ).add( this.origin );
	}
	lookAt( v ) {
		this.direction.copy( v ).sub( this.origin ).normalize();
		return this;
	}
	recast( t ) {
		this.origin.copy( this.at( t, _vector$2 ) );
		return this;
	}
	closestPointToPoint( point, target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Ray: .closestPointToPoint() target is now required' );
			target = new Vector3();
		}
		target.subVectors( point, this.origin );
		const directionDistance = target.dot( this.direction );
		if ( directionDistance < 0 ) {
			return target.copy( this.origin );
		}
		return target.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );
	}
	distanceToPoint( point ) {
		return Math.sqrt( this.distanceSqToPoint( point ) );
	}
	distanceSqToPoint( point ) {
		const directionDistance = _vector$2.subVectors( point, this.origin ).dot( this.direction );
		if ( directionDistance < 0 ) {
			return this.origin.distanceToSquared( point );
		}
		_vector$2.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );
		return _vector$2.distanceToSquared( point );
	}
	distanceSqToSegment( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {
		_segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );
		_segDir.copy( v1 ).sub( v0 ).normalize();
		_diff.copy( this.origin ).sub( _segCenter );
		const segExtent = v0.distanceTo( v1 ) * 0.5;
		const a01 = - this.direction.dot( _segDir );
		const b0 = _diff.dot( this.direction );
		const b1 = - _diff.dot( _segDir );
		const c = _diff.lengthSq();
		const det = Math.abs( 1 - a01 * a01 );
		let s0, s1, sqrDist, extDet;
		if ( det > 0 ) {
			s0 = a01 * b1 - b0;
			s1 = a01 * b0 - b1;
			extDet = segExtent * det;
			if ( s0 >= 0 ) {
				if ( s1 >= - extDet ) {
					if ( s1 <= extDet ) {
						const invDet = 1 / det;
						s0 *= invDet;
						s1 *= invDet;
						sqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;
					} else {
						s1 = segExtent;
						s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
						sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
					}
				} else {
					s1 = - segExtent;
					s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
				}
			} else {
				if ( s1 <= - extDet ) {
					s0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );
					s1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
				} else if ( s1 <= extDet ) {
					s0 = 0;
					s1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );
					sqrDist = s1 * ( s1 + 2 * b1 ) + c;
				} else {
					s0 = Math.max( 0, - ( a01 * segExtent + b0 ) );
					s1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
				}
			}
		} else {
			s1 = ( a01 > 0 ) ? - segExtent : segExtent;
			s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
			sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
		}
		if ( optionalPointOnRay ) {
			optionalPointOnRay.copy( this.direction ).multiplyScalar( s0 ).add( this.origin );
		}
		if ( optionalPointOnSegment ) {
			optionalPointOnSegment.copy( _segDir ).multiplyScalar( s1 ).add( _segCenter );
		}
		return sqrDist;
	}
	intersectSphere( sphere, target ) {
		_vector$2.subVectors( sphere.center, this.origin );
		const tca = _vector$2.dot( this.direction );
		const d2 = _vector$2.dot( _vector$2 ) - tca * tca;
		const radius2 = sphere.radius * sphere.radius;
		if ( d2 > radius2 ) return null;
		const thc = Math.sqrt( radius2 - d2 );
		const t0 = tca - thc;
		const t1 = tca + thc;
		if ( t0 < 0 && t1 < 0 ) return null;
		if ( t0 < 0 ) return this.at( t1, target );
		return this.at( t0, target );
	}
	intersectsSphere( sphere ) {
		return this.distanceSqToPoint( sphere.center ) <= ( sphere.radius * sphere.radius );
	}
	distanceToPlane( plane ) {
		const denominator = plane.normal.dot( this.direction );
		if ( denominator === 0 ) {
			if ( plane.distanceToPoint( this.origin ) === 0 ) {
				return 0;
			}
			return null;
		}
		const t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;
		return t >= 0 ? t : null;
	}
	intersectPlane( plane, target ) {
		const t = this.distanceToPlane( plane );
		if ( t === null ) {
			return null;
		}
		return this.at( t, target );
	}
	intersectsPlane( plane ) {
		const distToPoint = plane.distanceToPoint( this.origin );
		if ( distToPoint === 0 ) {
			return true;
		}
		const denominator = plane.normal.dot( this.direction );
		if ( denominator * distToPoint < 0 ) {
			return true;
		}
		return false;
	}
	intersectBox( box, target ) {
		let tmin, tmax, tymin, tymax, tzmin, tzmax;
		const invdirx = 1 / this.direction.x,
			invdiry = 1 / this.direction.y,
			invdirz = 1 / this.direction.z;
		const origin = this.origin;
		if ( invdirx >= 0 ) {
			tmin = ( box.min.x - origin.x ) * invdirx;
			tmax = ( box.max.x - origin.x ) * invdirx;
		} else {
			tmin = ( box.max.x - origin.x ) * invdirx;
			tmax = ( box.min.x - origin.x ) * invdirx;
		}
		if ( invdiry >= 0 ) {
			tymin = ( box.min.y - origin.y ) * invdiry;
			tymax = ( box.max.y - origin.y ) * invdiry;
		} else {
			tymin = ( box.max.y - origin.y ) * invdiry;
			tymax = ( box.min.y - origin.y ) * invdiry;
		}
		if ( ( tmin > tymax ) || ( tymin > tmax ) ) return null;
		if ( tymin > tmin || tmin !== tmin ) tmin = tymin;
		if ( tymax < tmax || tmax !== tmax ) tmax = tymax;
		if ( invdirz >= 0 ) {
			tzmin = ( box.min.z - origin.z ) * invdirz;
			tzmax = ( box.max.z - origin.z ) * invdirz;
		} else {
			tzmin = ( box.max.z - origin.z ) * invdirz;
			tzmax = ( box.min.z - origin.z ) * invdirz;
		}
		if ( ( tmin > tzmax ) || ( tzmin > tmax ) ) return null;
		if ( tzmin > tmin || tmin !== tmin ) tmin = tzmin;
		if ( tzmax < tmax || tmax !== tmax ) tmax = tzmax;
		if ( tmax < 0 ) return null;
		return this.at( tmin >= 0 ? tmin : tmax, target );
	}
	intersectsBox( box ) {
		return this.intersectBox( box, _vector$2 ) !== null;
	}
	intersectTriangle( a, b, c, backfaceCulling, target ) {
		_edge1.subVectors( b, a );
		_edge2.subVectors( c, a );
		_normal.crossVectors( _edge1, _edge2 );
		let DdN = this.direction.dot( _normal );
		let sign;
		if ( DdN > 0 ) {
			if ( backfaceCulling ) return null;
			sign = 1;
		} else if ( DdN < 0 ) {
			sign = - 1;
			DdN = - DdN;
		} else {
			return null;
		}
		_diff.subVectors( this.origin, a );
		const DdQxE2 = sign * this.direction.dot( _edge2.crossVectors( _diff, _edge2 ) );
		if ( DdQxE2 < 0 ) {
			return null;
		}
		const DdE1xQ = sign * this.direction.dot( _edge1.cross( _diff ) );
		if ( DdE1xQ < 0 ) {
			return null;
		}
		if ( DdQxE2 + DdE1xQ > DdN ) {
			return null;
		}
		const QdN = - sign * _diff.dot( _normal );
		if ( QdN < 0 ) {
			return null;
		}
		return this.at( QdN / DdN, target );
	}
	applyMatrix4( matrix4 ) {
		this.origin.applyMatrix4( matrix4 );
		this.direction.transformDirection( matrix4 );
		return this;
	}
	equals( ray ) {
		return ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );
	}
}
class Matrix4 {
	constructor() {
		Object.defineProperty( this, 'isMatrix4', { value: true } );
		this.elements = [
			1, 0, 0, 0,
			0, 1, 0, 0,
			0, 0, 1, 0,
			0, 0, 0, 1
		];
		if ( arguments.length > 0 ) {
			console.error( 'THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.' );
		}
	}
	set( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {
		const te = this.elements;
		te[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;
		te[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;
		te[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;
		te[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;
		return this;
	}
	identity() {
		this.set(
			1, 0, 0, 0,
			0, 1, 0, 0,
			0, 0, 1, 0,
			0, 0, 0, 1
		);
		return this;
	}
	clone() {
		return new Matrix4().fromArray( this.elements );
	}
	copy( m ) {
		const te = this.elements;
		const me = m.elements;
		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];
		te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];
		te[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];
		te[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];
		return this;
	}
	copyPosition( m ) {
		const te = this.elements, me = m.elements;
		te[ 12 ] = me[ 12 ];
		te[ 13 ] = me[ 13 ];
		te[ 14 ] = me[ 14 ];
		return this;
	}
	extractBasis( xAxis, yAxis, zAxis ) {
		xAxis.setFromMatrixColumn( this, 0 );
		yAxis.setFromMatrixColumn( this, 1 );
		zAxis.setFromMatrixColumn( this, 2 );
		return this;
	}
	makeBasis( xAxis, yAxis, zAxis ) {
		this.set(
			xAxis.x, yAxis.x, zAxis.x, 0,
			xAxis.y, yAxis.y, zAxis.y, 0,
			xAxis.z, yAxis.z, zAxis.z, 0,
			0, 0, 0, 1
		);
		return this;
	}
	extractRotation( m ) {
		const te = this.elements;
		const me = m.elements;
		const scaleX = 1 / _v1$1.setFromMatrixColumn( m, 0 ).length();
		const scaleY = 1 / _v1$1.setFromMatrixColumn( m, 1 ).length();
		const scaleZ = 1 / _v1$1.setFromMatrixColumn( m, 2 ).length();
		te[ 0 ] = me[ 0 ] * scaleX;
		te[ 1 ] = me[ 1 ] * scaleX;
		te[ 2 ] = me[ 2 ] * scaleX;
		te[ 3 ] = 0;
		te[ 4 ] = me[ 4 ] * scaleY;
		te[ 5 ] = me[ 5 ] * scaleY;
		te[ 6 ] = me[ 6 ] * scaleY;
		te[ 7 ] = 0;
		te[ 8 ] = me[ 8 ] * scaleZ;
		te[ 9 ] = me[ 9 ] * scaleZ;
		te[ 10 ] = me[ 10 ] * scaleZ;
		te[ 11 ] = 0;
		te[ 12 ] = 0;
		te[ 13 ] = 0;
		te[ 14 ] = 0;
		te[ 15 ] = 1;
		return this;
	}
	makeRotationFromEuler( euler ) {
		if ( ! ( euler && euler.isEuler ) ) {
			console.error( 'THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.' );
		}
		const te = this.elements;
		const x = euler.x, y = euler.y, z = euler.z;
		const a = Math.cos( x ), b = Math.sin( x );
		const c = Math.cos( y ), d = Math.sin( y );
		const e = Math.cos( z ), f = Math.sin( z );
		if ( euler.order === 'XYZ' ) {
			const ae = a * e, af = a * f, be = b * e, bf = b * f;
			te[ 0 ] = c * e;
			te[ 4 ] = - c * f;
			te[ 8 ] = d;
			te[ 1 ] = af + be * d;
			te[ 5 ] = ae - bf * d;
			te[ 9 ] = - b * c;
			te[ 2 ] = bf - ae * d;
			te[ 6 ] = be + af * d;
			te[ 10 ] = a * c;
		} else if ( euler.order === 'YXZ' ) {
			const ce = c * e, cf = c * f, de = d * e, df = d * f;
			te[ 0 ] = ce + df * b;
			te[ 4 ] = de * b - cf;
			te[ 8 ] = a * d;
			te[ 1 ] = a * f;
			te[ 5 ] = a * e;
			te[ 9 ] = - b;
			te[ 2 ] = cf * b - de;
			te[ 6 ] = df + ce * b;
			te[ 10 ] = a * c;
		} else if ( euler.order === 'ZXY' ) {
			const ce = c * e, cf = c * f, de = d * e, df = d * f;
			te[ 0 ] = ce - df * b;
			te[ 4 ] = - a * f;
			te[ 8 ] = de + cf * b;
			te[ 1 ] = cf + de * b;
			te[ 5 ] = a * e;
			te[ 9 ] = df - ce * b;
			te[ 2 ] = - a * d;
			te[ 6 ] = b;
			te[ 10 ] = a * c;
		} else if ( euler.order === 'ZYX' ) {
			const ae = a * e, af = a * f, be = b * e, bf = b * f;
			te[ 0 ] = c * e;
			te[ 4 ] = be * d - af;
			te[ 8 ] = ae * d + bf;
			te[ 1 ] = c * f;
			te[ 5 ] = bf * d + ae;
			te[ 9 ] = af * d - be;
			te[ 2 ] = - d;
			te[ 6 ] = b * c;
			te[ 10 ] = a * c;
		} else if ( euler.order === 'YZX' ) {
			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;
			te[ 0 ] = c * e;
			te[ 4 ] = bd - ac * f;
			te[ 8 ] = bc * f + ad;
			te[ 1 ] = f;
			te[ 5 ] = a * e;
			te[ 9 ] = - b * e;
			te[ 2 ] = - d * e;
			te[ 6 ] = ad * f + bc;
			te[ 10 ] = ac - bd * f;
		} else if ( euler.order === 'XZY' ) {
			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;
			te[ 0 ] = c * e;
			te[ 4 ] = - f;
			te[ 8 ] = d * e;
			te[ 1 ] = ac * f + bd;
			te[ 5 ] = a * e;
			te[ 9 ] = ad * f - bc;
			te[ 2 ] = bc * f - ad;
			te[ 6 ] = b * e;
			te[ 10 ] = bd * f + ac;
		}
		te[ 3 ] = 0;
		te[ 7 ] = 0;
		te[ 11 ] = 0;
		te[ 12 ] = 0;
		te[ 13 ] = 0;
		te[ 14 ] = 0;
		te[ 15 ] = 1;
		return this;
	}
	makeRotationFromQuaternion( q ) {
		return this.compose( _zero, q, _one );
	}
	lookAt( eye, target, up ) {
		const te = this.elements;
		_z.subVectors( eye, target );
		if ( _z.lengthSq() === 0 ) {
			_z.z = 1;
		}
		_z.normalize();
		_x.crossVectors( up, _z );
		if ( _x.lengthSq() === 0 ) {
			if ( Math.abs( up.z ) === 1 ) {
				_z.x += 0.0001;
			} else {
				_z.z += 0.0001;
			}
			_z.normalize();
			_x.crossVectors( up, _z );
		}
		_x.normalize();
		_y.crossVectors( _z, _x );
		te[ 0 ] = _x.x; te[ 4 ] = _y.x; te[ 8 ] = _z.x;
		te[ 1 ] = _x.y; te[ 5 ] = _y.y; te[ 9 ] = _z.y;
		te[ 2 ] = _x.z; te[ 6 ] = _y.z; te[ 10 ] = _z.z;
		return this;
	}
	multiply( m, n ) {
		if ( n !== undefined ) {
			console.warn( 'THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.' );
			return this.multiplyMatrices( m, n );
		}
		return this.multiplyMatrices( this, m );
	}
	premultiply( m ) {
		return this.multiplyMatrices( m, this );
	}
	multiplyMatrices( a, b ) {
		const ae = a.elements;
		const be = b.elements;
		const te = this.elements;
		const a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];
		const a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];
		const a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];
		const a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];
		const b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];
		const b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];
		const b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];
		const b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];
		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
		te[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
		te[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
		te[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;
		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
		te[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
		te[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
		te[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;
		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
		te[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
		te[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
		te[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;
		te[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
		te[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
		te[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
		te[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;
		return this;
	}
	multiplyScalar( s ) {
		const te = this.elements;
		te[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;
		te[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;
		te[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;
		te[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;
		return this;
	}
	determinant() {
		const te = this.elements;
		const n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];
		const n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];
		const n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];
		const n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];
		return (
			n41 * (
				+ n14 * n23 * n32
				 - n13 * n24 * n32
				 - n14 * n22 * n33
				 + n12 * n24 * n33
				 + n13 * n22 * n34
				 - n12 * n23 * n34
			) +
			n42 * (
				+ n11 * n23 * n34
				 - n11 * n24 * n33
				 + n14 * n21 * n33
				 - n13 * n21 * n34
				 + n13 * n24 * n31
				 - n14 * n23 * n31
			) +
			n43 * (
				+ n11 * n24 * n32
				 - n11 * n22 * n34
				 - n14 * n21 * n32
				 + n12 * n21 * n34
				 + n14 * n22 * n31
				 - n12 * n24 * n31
			) +
			n44 * (
				- n13 * n22 * n31
				 - n11 * n23 * n32
				 + n11 * n22 * n33
				 + n13 * n21 * n32
				 - n12 * n21 * n33
				 + n12 * n23 * n31
			)
		);
	}
	transpose() {
		const te = this.elements;
		let tmp;
		tmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;
		tmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;
		tmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;
		tmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;
		tmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;
		tmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;
		return this;
	}
	setPosition( x, y, z ) {
		const te = this.elements;
		if ( x.isVector3 ) {
			te[ 12 ] = x.x;
			te[ 13 ] = x.y;
			te[ 14 ] = x.z;
		} else {
			te[ 12 ] = x;
			te[ 13 ] = y;
			te[ 14 ] = z;
		}
		return this;
	}
	getInverse( m, throwOnDegenerate ) {
		if ( throwOnDegenerate !== undefined ) {
			console.warn( "THREE.Matrix4: .getInverse() can no longer be configured to throw on degenerate." );
		}
		const te = this.elements,
			me = m.elements,
			n11 = me[ 0 ], n21 = me[ 1 ], n31 = me[ 2 ], n41 = me[ 3 ],
			n12 = me[ 4 ], n22 = me[ 5 ], n32 = me[ 6 ], n42 = me[ 7 ],
			n13 = me[ 8 ], n23 = me[ 9 ], n33 = me[ 10 ], n43 = me[ 11 ],
			n14 = me[ 12 ], n24 = me[ 13 ], n34 = me[ 14 ], n44 = me[ 15 ],
			t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
			t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
			t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
			t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
		const det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;
		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );
		const detInv = 1 / det;
		te[ 0 ] = t11 * detInv;
		te[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;
		te[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;
		te[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;
		te[ 4 ] = t12 * detInv;
		te[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;
		te[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;
		te[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;
		te[ 8 ] = t13 * detInv;
		te[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;
		te[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;
		te[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;
		te[ 12 ] = t14 * detInv;
		te[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;
		te[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;
		te[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;
		return this;
	}
	scale( v ) {
		const te = this.elements;
		const x = v.x, y = v.y, z = v.z;
		te[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;
		te[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;
		te[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;
		te[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;
		return this;
	}
	getMaxScaleOnAxis() {
		const te = this.elements;
		const scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];
		const scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];
		const scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];
		return Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );
	}
	makeTranslation( x, y, z ) {
		this.set(
			1, 0, 0, x,
			0, 1, 0, y,
			0, 0, 1, z,
			0, 0, 0, 1
		);
		return this;
	}
	makeRotationX( theta ) {
		const c = Math.cos( theta ), s = Math.sin( theta );
		this.set(
			1, 0, 0, 0,
			0, c, - s, 0,
			0, s, c, 0,
			0, 0, 0, 1
		);
		return this;
	}
	makeRotationY( theta ) {
		const c = Math.cos( theta ), s = Math.sin( theta );
		this.set(
			 c, 0, s, 0,
			 0, 1, 0, 0,
			- s, 0, c, 0,
			 0, 0, 0, 1
		);
		return this;
	}
	makeRotationZ( theta ) {
		const c = Math.cos( theta ), s = Math.sin( theta );
		this.set(
			c, - s, 0, 0,
			s, c, 0, 0,
			0, 0, 1, 0,
			0, 0, 0, 1
		);
		return this;
	}
	makeRotationAxis( axis, angle ) {
		const c = Math.cos( angle );
		const s = Math.sin( angle );
		const t = 1 - c;
		const x = axis.x, y = axis.y, z = axis.z;
		const tx = t * x, ty = t * y;
		this.set(
			tx * x + c, tx * y - s * z, tx * z + s * y, 0,
			tx * y + s * z, ty * y + c, ty * z - s * x, 0,
			tx * z - s * y, ty * z + s * x, t * z * z + c, 0,
			0, 0, 0, 1
		);
		return this;
	}
	makeScale( x, y, z ) {
		this.set(
			x, 0, 0, 0,
			0, y, 0, 0,
			0, 0, z, 0,
			0, 0, 0, 1
		);
		return this;
	}
	makeShear( x, y, z ) {
		this.set(
			1, y, z, 0,
			x, 1, z, 0,
			x, y, 1, 0,
			0, 0, 0, 1
		);
		return this;
	}
	compose( position, quaternion, scale ) {
		const te = this.elements;
		const x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;
		const x2 = x + x,	y2 = y + y, z2 = z + z;
		const xx = x * x2, xy = x * y2, xz = x * z2;
		const yy = y * y2, yz = y * z2, zz = z * z2;
		const wx = w * x2, wy = w * y2, wz = w * z2;
		const sx = scale.x, sy = scale.y, sz = scale.z;
		te[ 0 ] = ( 1 - ( yy + zz ) ) * sx;
		te[ 1 ] = ( xy + wz ) * sx;
		te[ 2 ] = ( xz - wy ) * sx;
		te[ 3 ] = 0;
		te[ 4 ] = ( xy - wz ) * sy;
		te[ 5 ] = ( 1 - ( xx + zz ) ) * sy;
		te[ 6 ] = ( yz + wx ) * sy;
		te[ 7 ] = 0;
		te[ 8 ] = ( xz + wy ) * sz;
		te[ 9 ] = ( yz - wx ) * sz;
		te[ 10 ] = ( 1 - ( xx + yy ) ) * sz;
		te[ 11 ] = 0;
		te[ 12 ] = position.x;
		te[ 13 ] = position.y;
		te[ 14 ] = position.z;
		te[ 15 ] = 1;
		return this;
	}
	decompose( position, quaternion, scale ) {
		const te = this.elements;
		let sx = _v1$1.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();
		const sy = _v1$1.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();
		const sz = _v1$1.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();
		const det = this.determinant();
		if ( det < 0 ) sx = - sx;
		position.x = te[ 12 ];
		position.y = te[ 13 ];
		position.z = te[ 14 ];
		_m1.copy( this );
		const invSX = 1 / sx;
		const invSY = 1 / sy;
		const invSZ = 1 / sz;
		_m1.elements[ 0 ] *= invSX;
		_m1.elements[ 1 ] *= invSX;
		_m1.elements[ 2 ] *= invSX;
		_m1.elements[ 4 ] *= invSY;
		_m1.elements[ 5 ] *= invSY;
		_m1.elements[ 6 ] *= invSY;
		_m1.elements[ 8 ] *= invSZ;
		_m1.elements[ 9 ] *= invSZ;
		_m1.elements[ 10 ] *= invSZ;
		quaternion.setFromRotationMatrix( _m1 );
		scale.x = sx;
		scale.y = sy;
		scale.z = sz;
		return this;
	}
	makePerspective( left, right, top, bottom, near, far ) {
		if ( far === undefined ) {
			console.warn( 'THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.' );
		}
		const te = this.elements;
		const x = 2 * near / ( right - left );
		const y = 2 * near / ( top - bottom );
		const a = ( right + left ) / ( right - left );
		const b = ( top + bottom ) / ( top - bottom );
		const c = - ( far + near ) / ( far - near );
		const d = - 2 * far * near / ( far - near );
		te[ 0 ] = x;	te[ 4 ] = 0;	te[ 8 ] = a;	te[ 12 ] = 0;
		te[ 1 ] = 0;	te[ 5 ] = y;	te[ 9 ] = b;	te[ 13 ] = 0;
		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = c;	te[ 14 ] = d;
		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = - 1;	te[ 15 ] = 0;
		return this;
	}
	makeOrthographic( left, right, top, bottom, near, far ) {
		const te = this.elements;
		const w = 1.0 / ( right - left );
		const h = 1.0 / ( top - bottom );
		const p = 1.0 / ( far - near );
		const x = ( right + left ) * w;
		const y = ( top + bottom ) * h;
		const z = ( far + near ) * p;
		te[ 0 ] = 2 * w;	te[ 4 ] = 0;	te[ 8 ] = 0;	te[ 12 ] = - x;
		te[ 1 ] = 0;	te[ 5 ] = 2 * h;	te[ 9 ] = 0;	te[ 13 ] = - y;
		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = - 2 * p;	te[ 14 ] = - z;
		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = 0;	te[ 15 ] = 1;
		return this;
	}
	equals( matrix ) {
		const te = this.elements;
		const me = matrix.elements;
		for ( let i = 0; i < 16; i ++ ) {
			if ( te[ i ] !== me[ i ] ) return false;
		}
		return true;
	}
	fromArray( array, offset ) {
		if ( offset === undefined ) offset = 0;
		for ( let i = 0; i < 16; i ++ ) {
			this.elements[ i ] = array[ i + offset ];
		}
		return this;
	}
	toArray( array, offset ) {
		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;
		const te = this.elements;
		array[ offset ] = te[ 0 ];
		array[ offset + 1 ] = te[ 1 ];
		array[ offset + 2 ] = te[ 2 ];
		array[ offset + 3 ] = te[ 3 ];
		array[ offset + 4 ] = te[ 4 ];
		array[ offset + 5 ] = te[ 5 ];
		array[ offset + 6 ] = te[ 6 ];
		array[ offset + 7 ] = te[ 7 ];
		array[ offset + 8 ] = te[ 8 ];
		array[ offset + 9 ] = te[ 9 ];
		array[ offset + 10 ] = te[ 10 ];
		array[ offset + 11 ] = te[ 11 ];
		array[ offset + 12 ] = te[ 12 ];
		array[ offset + 13 ] = te[ 13 ];
		array[ offset + 14 ] = te[ 14 ];
		array[ offset + 15 ] = te[ 15 ];
		return array;
	}
}
const _v1$1 = new Vector3();
const _m1 = new Matrix4();
const _zero = new Vector3( 0, 0, 0 );
const _one = new Vector3( 1, 1, 1 );
const _x = new Vector3();
const _y = new Vector3();
const _z = new Vector3();
class Euler {
	constructor( x = 0, y = 0, z = 0, order = Euler.DefaultOrder ) {
		Object.defineProperty( this, 'isEuler', { value: true } );
		this._x = x;
		this._y = y;
		this._z = z;
		this._order = order;
	}
	get x() {
		return this._x;
	}
	set x( value ) {
		this._x = value;
		this._onChangeCallback();
	}
	get y() {
		return this._y;
	}
	set y( value ) {
		this._y = value;
		this._onChangeCallback();
	}
	get z() {
		return this._z;
	}
	set z( value ) {
		this._z = value;
		this._onChangeCallback();
	}
	get order() {
		return this._order;
	}
	set order( value ) {
		this._order = value;
		this._onChangeCallback();
	}
	set( x, y, z, order ) {
		this._x = x;
		this._y = y;
		this._z = z;
		this._order = order || this._order;
		this._onChangeCallback();
		return this;
	}
	clone() {
		return new this.constructor( this._x, this._y, this._z, this._order );
	}
	copy( euler ) {
		this._x = euler._x;
		this._y = euler._y;
		this._z = euler._z;
		this._order = euler._order;
		this._onChangeCallback();
		return this;
	}
	setFromRotationMatrix( m, order, update ) {
		const clamp = MathUtils.clamp;
		const te = m.elements;
		const m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];
		const m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];
		const m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];
		order = order || this._order;
		switch ( order ) {
			case 'XYZ':
				this._y = Math.asin( clamp( m13, - 1, 1 ) );
				if ( Math.abs( m13 ) < 0.9999999 ) {
					this._x = Math.atan2( - m23, m33 );
					this._z = Math.atan2( - m12, m11 );
				} else {
					this._x = Math.atan2( m32, m22 );
					this._z = 0;
				}
				break;
			case 'YXZ':
				this._x = Math.asin( - clamp( m23, - 1, 1 ) );
				if ( Math.abs( m23 ) < 0.9999999 ) {
					this._y = Math.atan2( m13, m33 );
					this._z = Math.atan2( m21, m22 );
				} else {
					this._y = Math.atan2( - m31, m11 );
					this._z = 0;
				}
				break;
			case 'ZXY':
				this._x = Math.asin( clamp( m32, - 1, 1 ) );
				if ( Math.abs( m32 ) < 0.9999999 ) {
					this._y = Math.atan2( - m31, m33 );
					this._z = Math.atan2( - m12, m22 );
				} else {
					this._y = 0;
					this._z = Math.atan2( m21, m11 );
				}
				break;
			case 'ZYX':
				this._y = Math.asin( - clamp( m31, - 1, 1 ) );
				if ( Math.abs( m31 ) < 0.9999999 ) {
					this._x = Math.atan2( m32, m33 );
					this._z = Math.atan2( m21, m11 );
				} else {
					this._x = 0;
					this._z = Math.atan2( - m12, m22 );
				}
				break;
			case 'YZX':
				this._z = Math.asin( clamp( m21, - 1, 1 ) );
				if ( Math.abs( m21 ) < 0.9999999 ) {
					this._x = Math.atan2( - m23, m22 );
					this._y = Math.atan2( - m31, m11 );
				} else {
					this._x = 0;
					this._y = Math.atan2( m13, m33 );
				}
				break;
			case 'XZY':
				this._z = Math.asin( - clamp( m12, - 1, 1 ) );
				if ( Math.abs( m12 ) < 0.9999999 ) {
					this._x = Math.atan2( m32, m22 );
					this._y = Math.atan2( m13, m11 );
				} else {
					this._x = Math.atan2( - m23, m33 );
					this._y = 0;
				}
				break;
			default:
				console.warn( 'THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order );
		}
		this._order = order;
		if ( update !== false ) this._onChangeCallback();
		return this;
	}
	setFromQuaternion( q, order, update ) {
		_matrix.makeRotationFromQuaternion( q );
		return this.setFromRotationMatrix( _matrix, order, update );
	}
	setFromVector3( v, order ) {
		return this.set( v.x, v.y, v.z, order || this._order );
	}
	reorder( newOrder ) {
		_quaternion$1.setFromEuler( this );
		return this.setFromQuaternion( _quaternion$1, newOrder );
	}
	equals( euler ) {
		return ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );
	}
	fromArray( array ) {
		this._x = array[ 0 ];
		this._y = array[ 1 ];
		this._z = array[ 2 ];
		if ( array[ 3 ] !== undefined ) this._order = array[ 3 ];
		this._onChangeCallback();
		return this;
	}
	toArray( array, offset ) {
		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;
		array[ offset ] = this._x;
		array[ offset + 1 ] = this._y;
		array[ offset + 2 ] = this._z;
		array[ offset + 3 ] = this._order;
		return array;
	}
	toVector3( optionalResult ) {
		if ( optionalResult ) {
			return optionalResult.set( this._x, this._y, this._z );
		} else {
			return new Vector3( this._x, this._y, this._z );
		}
	}
	_onChange( callback ) {
		this._onChangeCallback = callback;
		return this;
	}
	_onChangeCallback() {}
}
Euler.DefaultOrder = 'XYZ';
Euler.RotationOrders = [ 'XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX' ];
const _matrix = new Matrix4();
const _quaternion$1 = new Quaternion();
class Layers {
	constructor() {
		this.mask = 1 | 0;
	}
	set( channel ) {
		this.mask = 1 << channel | 0;
	}
	enable( channel ) {
		this.mask |= 1 << channel | 0;
	}
	enableAll() {
		this.mask = 0xffffffff | 0;
	}
	toggle( channel ) {
		this.mask ^= 1 << channel | 0;
	}
	disable( channel ) {
		this.mask &= ~ ( 1 << channel | 0 );
	}
	disableAll() {
		this.mask = 0;
	}
	test( layers ) {
		return ( this.mask & layers.mask ) !== 0;
	}
}
let _object3DId = 0;
const _v1$2 = new Vector3();
const _q1 = new Quaternion();
const _m1$1 = new Matrix4();
const _target = new Vector3();
const _position = new Vector3();
const _scale = new Vector3();
const _quaternion$2 = new Quaternion();
const _xAxis = new Vector3( 1, 0, 0 );
const _yAxis = new Vector3( 0, 1, 0 );
const _zAxis = new Vector3( 0, 0, 1 );
const _addedEvent = { type: 'added' };
const _removedEvent = { type: 'removed' };
function Object3D() {
	Object.defineProperty( this, 'id', { value: _object3DId ++ } );
	this.uuid = MathUtils.generateUUID();
	this.name = '';
	this.type = 'Object3D';
	this.parent = null;
	this.children = [];
	this.up = Object3D.DefaultUp.clone();
	const position = new Vector3();
	const rotation = new Euler();
	const quaternion = new Quaternion();
	const scale = new Vector3( 1, 1, 1 );
	function onRotationChange() {
		quaternion.setFromEuler( rotation, false );
	}
	function onQuaternionChange() {
		rotation.setFromQuaternion( quaternion, undefined, false );
	}
	rotation._onChange( onRotationChange );
	quaternion._onChange( onQuaternionChange );
	Object.defineProperties( this, {
		position: {
			configurable: true,
			enumerable: true,
			value: position
		},
		rotation: {
			configurable: true,
			enumerable: true,
			value: rotation
		},
		quaternion: {
			configurable: true,
			enumerable: true,
			value: quaternion
		},
		scale: {
			configurable: true,
			enumerable: true,
			value: scale
		},
		modelViewMatrix: {
			value: new Matrix4()
		},
		normalMatrix: {
			value: new Matrix3()
		}
	} );
	this.matrix = new Matrix4();
	this.matrixWorld = new Matrix4();
	this.matrixAutoUpdate = Object3D.DefaultMatrixAutoUpdate;
	this.matrixWorldNeedsUpdate = false;
	this.layers = new Layers();
	this.visible = true;
	this.castShadow = false;
	this.receiveShadow = false;
	this.frustumCulled = true;
	this.renderOrder = 0;
	this.userData = {};
}
Object3D.DefaultUp = new Vector3( 0, 1, 0 );
Object3D.DefaultMatrixAutoUpdate = true;
Object3D.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
	constructor: Object3D,
	isObject3D: true,
	onBeforeRender: function () {},
	onAfterRender: function () {},
	applyMatrix4: function ( matrix ) {
		if ( this.matrixAutoUpdate ) this.updateMatrix();
		this.matrix.premultiply( matrix );
		this.matrix.decompose( this.position, this.quaternion, this.scale );
	},
	applyQuaternion: function ( q ) {
		this.quaternion.premultiply( q );
		return this;
	},
	setRotationFromAxisAngle: function ( axis, angle ) {
		this.quaternion.setFromAxisAngle( axis, angle );
	},
	setRotationFromEuler: function ( euler ) {
		this.quaternion.setFromEuler( euler, true );
	},
	setRotationFromMatrix: function ( m ) {
		this.quaternion.setFromRotationMatrix( m );
	},
	setRotationFromQuaternion: function ( q ) {
		this.quaternion.copy( q );
	},
	rotateOnAxis: function ( axis, angle ) {
		_q1.setFromAxisAngle( axis, angle );
		this.quaternion.multiply( _q1 );
		return this;
	},
	rotateOnWorldAxis: function ( axis, angle ) {
		_q1.setFromAxisAngle( axis, angle );
		this.quaternion.premultiply( _q1 );
		return this;
	},
	rotateX: function ( angle ) {
		return this.rotateOnAxis( _xAxis, angle );
	},
	rotateY: function ( angle ) {
		return this.rotateOnAxis( _yAxis, angle );
	},
	rotateZ: function ( angle ) {
		return this.rotateOnAxis( _zAxis, angle );
	},
	translateOnAxis: function ( axis, distance ) {
		_v1$2.copy( axis ).applyQuaternion( this.quaternion );
		this.position.add( _v1$2.multiplyScalar( distance ) );
		return this;
	},
	translateX: function ( distance ) {
		return this.translateOnAxis( _xAxis, distance );
	},
	translateY: function ( distance ) {
		return this.translateOnAxis( _yAxis, distance );
	},
	translateZ: function ( distance ) {
		return this.translateOnAxis( _zAxis, distance );
	},
	localToWorld: function ( vector ) {
		return vector.applyMatrix4( this.matrixWorld );
	},
	worldToLocal: function ( vector ) {
		return vector.applyMatrix4( _m1$1.getInverse( this.matrixWorld ) );
	},
	lookAt: function ( x, y, z ) {
		if ( x.isVector3 ) {
			_target.copy( x );
		} else {
			_target.set( x, y, z );
		}
		const parent = this.parent;
		this.updateWorldMatrix( true, false );
		_position.setFromMatrixPosition( this.matrixWorld );
		if ( this.isCamera || this.isLight ) {
			_m1$1.lookAt( _position, _target, this.up );
		} else {
			_m1$1.lookAt( _target, _position, this.up );
		}
		this.quaternion.setFromRotationMatrix( _m1$1 );
		if ( parent ) {
			_m1$1.extractRotation( parent.matrixWorld );
			_q1.setFromRotationMatrix( _m1$1 );
			this.quaternion.premultiply( _q1.inverse() );
		}
	},
	add: function ( object ) {
		if ( arguments.length > 1 ) {
			for ( let i = 0; i < arguments.length; i ++ ) {
				this.add( arguments[ i ] );
			}
			return this;
		}
		if ( object === this ) {
			console.error( "THREE.Object3D.add: object can't be added as a child of itself.", object );
			return this;
		}
		if ( ( object && object.isObject3D ) ) {
			if ( object.parent !== null ) {
				object.parent.remove( object );
			}
			object.parent = this;
			this.children.push( object );
			object.dispatchEvent( _addedEvent );
		} else {
			console.error( "THREE.Object3D.add: object not an instance of THREE.Object3D.", object );
		}
		return this;
	},
	remove: function ( object ) {
		if ( arguments.length > 1 ) {
			for ( let i = 0; i < arguments.length; i ++ ) {
				this.remove( arguments[ i ] );
			}
			return this;
		}
		const index = this.children.indexOf( object );
		if ( index !== - 1 ) {
			object.parent = null;
			this.children.splice( index, 1 );
			object.dispatchEvent( _removedEvent );
		}
		return this;
	},
	attach: function ( object ) {
		this.updateWorldMatrix( true, false );
		_m1$1.getInverse( this.matrixWorld );
		if ( object.parent !== null ) {
			object.parent.updateWorldMatrix( true, false );
			_m1$1.multiply( object.parent.matrixWorld );
		}
		object.applyMatrix4( _m1$1 );
		object.updateWorldMatrix( false, false );
		this.add( object );
		return this;
	},
	getObjectById: function ( id ) {
		return this.getObjectByProperty( 'id', id );
	},
	getObjectByName: function ( name ) {
		return this.getObjectByProperty( 'name', name );
	},
	getObjectByProperty: function ( name, value ) {
		if ( this[ name ] === value ) return this;
		for ( let i = 0, l = this.children.length; i < l; i ++ ) {
			const child = this.children[ i ];
			const object = child.getObjectByProperty( name, value );
			if ( object !== undefined ) {
				return object;
			}
		}
		return undefined;
	},
	getWorldPosition: function ( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Object3D: .getWorldPosition() target is now required' );
			target = new Vector3();
		}
		this.updateMatrixWorld( true );
		return target.setFromMatrixPosition( this.matrixWorld );
	},
	getWorldQuaternion: function ( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Object3D: .getWorldQuaternion() target is now required' );
			target = new Quaternion();
		}
		this.updateMatrixWorld( true );
		this.matrixWorld.decompose( _position, target, _scale );
		return target;
	},
	getWorldScale: function ( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Object3D: .getWorldScale() target is now required' );
			target = new Vector3();
		}
		this.updateMatrixWorld( true );
		this.matrixWorld.decompose( _position, _quaternion$2, target );
		return target;
	},
	getWorldDirection: function ( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Object3D: .getWorldDirection() target is now required' );
			target = new Vector3();
		}
		this.updateMatrixWorld( true );
		const e = this.matrixWorld.elements;
		return target.set( e[ 8 ], e[ 9 ], e[ 10 ] ).normalize();
	},
	raycast: function () {},
	traverse: function ( callback ) {
		callback( this );
		const children = this.children;
		for ( let i = 0, l = children.length; i < l; i ++ ) {
			children[ i ].traverse( callback );
		}
	},
	traverseVisible: function ( callback ) {
		if ( this.visible === false ) return;
		callback( this );
		const children = this.children;
		for ( let i = 0, l = children.length; i < l; i ++ ) {
			children[ i ].traverseVisible( callback );
		}
	},
	traverseAncestors: function ( callback ) {
		const parent = this.parent;
		if ( parent !== null ) {
			callback( parent );
			parent.traverseAncestors( callback );
		}
	},
	updateMatrix: function () {
		this.matrix.compose( this.position, this.quaternion, this.scale );
		this.matrixWorldNeedsUpdate = true;
	},
	updateMatrixWorld: function ( force ) {
		if ( this.matrixAutoUpdate ) this.updateMatrix();
		if ( this.matrixWorldNeedsUpdate || force ) {
			if ( this.parent === null ) {
				this.matrixWorld.copy( this.matrix );
			} else {
				this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
			}
			this.matrixWorldNeedsUpdate = false;
			force = true;
		}
		const children = this.children;
		for ( let i = 0, l = children.length; i < l; i ++ ) {
			children[ i ].updateMatrixWorld( force );
		}
	},
	updateWorldMatrix: function ( updateParents, updateChildren ) {
		const parent = this.parent;
		if ( updateParents === true && parent !== null ) {
			parent.updateWorldMatrix( true, false );
		}
		if ( this.matrixAutoUpdate ) this.updateMatrix();
		if ( this.parent === null ) {
			this.matrixWorld.copy( this.matrix );
		} else {
			this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
		}
		if ( updateChildren === true ) {
			const children = this.children;
			for ( let i = 0, l = children.length; i < l; i ++ ) {
				children[ i ].updateWorldMatrix( false, true );
			}
		}
	},
	toJSON: function ( meta ) {
		const isRootObject = ( meta === undefined || typeof meta === 'string' );
		const output = {};
		if ( isRootObject ) {
			meta = {
				geometries: {},
				materials: {},
				textures: {},
				images: {},
				shapes: {}
			};
			output.metadata = {
				version: 4.5,
				type: 'Object',
				generator: 'Object3D.toJSON'
			};
		}
		const object = {};
		object.uuid = this.uuid;
		object.type = this.type;
		if ( this.name !== '' ) object.name = this.name;
		if ( this.castShadow === true ) object.castShadow = true;
		if ( this.receiveShadow === true ) object.receiveShadow = true;
		if ( this.visible === false ) object.visible = false;
		if ( this.frustumCulled === false ) object.frustumCulled = false;
		if ( this.renderOrder !== 0 ) object.renderOrder = this.renderOrder;
		if ( JSON.stringify( this.userData ) !== '{}' ) object.userData = this.userData;
		object.layers = this.layers.mask;
		object.matrix = this.matrix.toArray();
		if ( this.matrixAutoUpdate === false ) object.matrixAutoUpdate = false;
		if ( this.isInstancedMesh ) {
			object.type = 'InstancedMesh';
			object.count = this.count;
			object.instanceMatrix = this.instanceMatrix.toJSON();
		}
		function serialize( library, element ) {
			if ( library[ element.uuid ] === undefined ) {
				library[ element.uuid ] = element.toJSON( meta );
			}
			return element.uuid;
		}
		if ( this.isMesh || this.isLine || this.isPoints ) {
			object.geometry = serialize( meta.geometries, this.geometry );
			const parameters = this.geometry.parameters;
			if ( parameters !== undefined && parameters.shapes !== undefined ) {
				const shapes = parameters.shapes;
				if ( Array.isArray( shapes ) ) {
					for ( let i = 0, l = shapes.length; i < l; i ++ ) {
						const shape = shapes[ i ];
						serialize( meta.shapes, shape );
					}
				} else {
					serialize( meta.shapes, shapes );
				}
			}
		}
		if ( this.material !== undefined ) {
			if ( Array.isArray( this.material ) ) {
				const uuids = [];
				for ( let i = 0, l = this.material.length; i < l; i ++ ) {
					uuids.push( serialize( meta.materials, this.material[ i ] ) );
				}
				object.material = uuids;
			} else {
				object.material = serialize( meta.materials, this.material );
			}
		}
		if ( this.children.length > 0 ) {
			object.children = [];
			for ( let i = 0; i < this.children.length; i ++ ) {
				object.children.push( this.children[ i ].toJSON( meta ).object );
			}
		}
		if ( isRootObject ) {
			const geometries = extractFromCache( meta.geometries );
			const materials = extractFromCache( meta.materials );
			const textures = extractFromCache( meta.textures );
			const images = extractFromCache( meta.images );
			const shapes = extractFromCache( meta.shapes );
			if ( geometries.length > 0 ) output.geometries = geometries;
			if ( materials.length > 0 ) output.materials = materials;
			if ( textures.length > 0 ) output.textures = textures;
			if ( images.length > 0 ) output.images = images;
			if ( shapes.length > 0 ) output.shapes = shapes;
		}
		output.object = object;
		return output;
		function extractFromCache( cache ) {
			const values = [];
			for ( const key in cache ) {
				const data = cache[ key ];
				delete data.metadata;
				values.push( data );
			}
			return values;
		}
	},
	clone: function ( recursive ) {
		return new this.constructor().copy( this, recursive );
	},
	copy: function ( source, recursive ) {
		if ( recursive === undefined ) recursive = true;
		this.name = source.name;
		this.up.copy( source.up );
		this.position.copy( source.position );
		this.rotation.order = source.rotation.order;
		this.quaternion.copy( source.quaternion );
		this.scale.copy( source.scale );
		this.matrix.copy( source.matrix );
		this.matrixWorld.copy( source.matrixWorld );
		this.matrixAutoUpdate = source.matrixAutoUpdate;
		this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;
		this.layers.mask = source.layers.mask;
		this.visible = source.visible;
		this.castShadow = source.castShadow;
		this.receiveShadow = source.receiveShadow;
		this.frustumCulled = source.frustumCulled;
		this.renderOrder = source.renderOrder;
		this.userData = JSON.parse( JSON.stringify( source.userData ) );
		if ( recursive === true ) {
			for ( let i = 0; i < source.children.length; i ++ ) {
				const child = source.children[ i ];
				this.add( child.clone() );
			}
		}
		return this;
	}
} );
const _vector1 = new Vector3();
const _vector2 = new Vector3();
const _normalMatrix = new Matrix3();
class Plane {
	constructor( normal, constant ) {
		Object.defineProperty( this, 'isPlane', { value: true } );
		this.normal = ( normal !== undefined ) ? normal : new Vector3( 1, 0, 0 );
		this.constant = ( constant !== undefined ) ? constant : 0;
	}
	set( normal, constant ) {
		this.normal.copy( normal );
		this.constant = constant;
		return this;
	}
	setComponents( x, y, z, w ) {
		this.normal.set( x, y, z );
		this.constant = w;
		return this;
	}
	setFromNormalAndCoplanarPoint( normal, point ) {
		this.normal.copy( normal );
		this.constant = - point.dot( this.normal );
		return this;
	}
	setFromCoplanarPoints( a, b, c ) {
		const normal = _vector1.subVectors( c, b ).cross( _vector2.subVectors( a, b ) ).normalize();
		this.setFromNormalAndCoplanarPoint( normal, a );
		return this;
	}
	clone() {
		return new this.constructor().copy( this );
	}
	copy( plane ) {
		this.normal.copy( plane.normal );
		this.constant = plane.constant;
		return this;
	}
	normalize() {
		const inverseNormalLength = 1.0 / this.normal.length();
		this.normal.multiplyScalar( inverseNormalLength );
		this.constant *= inverseNormalLength;
		return this;
	}
	negate() {
		this.constant *= - 1;
		this.normal.negate();
		return this;
	}
	distanceToPoint( point ) {
		return this.normal.dot( point ) + this.constant;
	}
	distanceToSphere( sphere ) {
		return this.distanceToPoint( sphere.center ) - sphere.radius;
	}
	projectPoint( point, target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Plane: .projectPoint() target is now required' );
			target = new Vector3();
		}
		return target.copy( this.normal ).multiplyScalar( - this.distanceToPoint( point ) ).add( point );
	}
	intersectLine( line, target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Plane: .intersectLine() target is now required' );
			target = new Vector3();
		}
		const direction = line.delta( _vector1 );
		const denominator = this.normal.dot( direction );
		if ( denominator === 0 ) {
			if ( this.distanceToPoint( line.start ) === 0 ) {
				return target.copy( line.start );
			}
			return undefined;
		}
		const t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;
		if ( t < 0 || t > 1 ) {
			return undefined;
		}
		return target.copy( direction ).multiplyScalar( t ).add( line.start );
	}
	intersectsLine( line ) {
		const startSign = this.distanceToPoint( line.start );
		const endSign = this.distanceToPoint( line.end );
		return ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );
	}
	intersectsBox( box ) {
		return box.intersectsPlane( this );
	}
	intersectsSphere( sphere ) {
		return sphere.intersectsPlane( this );
	}
	coplanarPoint( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Plane: .coplanarPoint() target is now required' );
			target = new Vector3();
		}
		return target.copy( this.normal ).multiplyScalar( - this.constant );
	}
	applyMatrix4( matrix, optionalNormalMatrix ) {
		const normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix( matrix );
		const referencePoint = this.coplanarPoint( _vector1 ).applyMatrix4( matrix );
		const normal = this.normal.applyMatrix3( normalMatrix ).normalize();
		this.constant = - referencePoint.dot( normal );
		return this;
	}
	translate( offset ) {
		this.constant -= offset.dot( this.normal );
		return this;
	}
	equals( plane ) {
		return plane.normal.equals( this.normal ) && ( plane.constant === this.constant );
	}
}
const _v0$1 = new Vector3();
const _v1$3 = new Vector3();
const _v2$1 = new Vector3();
const _v3 = new Vector3();
const _vab = new Vector3();
const _vac = new Vector3();
const _vbc = new Vector3();
const _vap = new Vector3();
const _vbp = new Vector3();
const _vcp = new Vector3();
class Triangle {
	constructor( a, b, c ) {
		this.a = ( a !== undefined ) ? a : new Vector3();
		this.b = ( b !== undefined ) ? b : new Vector3();
		this.c = ( c !== undefined ) ? c : new Vector3();
	}
	static getNormal( a, b, c, target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Triangle: .getNormal() target is now required' );
			target = new Vector3();
		}
		target.subVectors( c, b );
		_v0$1.subVectors( a, b );
		target.cross( _v0$1 );
		const targetLengthSq = target.lengthSq();
		if ( targetLengthSq > 0 ) {
			return target.multiplyScalar( 1 / Math.sqrt( targetLengthSq ) );
		}
		return target.set( 0, 0, 0 );
	}
	static getBarycoord( point, a, b, c, target ) {
		_v0$1.subVectors( c, a );
		_v1$3.subVectors( b, a );
		_v2$1.subVectors( point, a );
		const dot00 = _v0$1.dot( _v0$1 );
		const dot01 = _v0$1.dot( _v1$3 );
		const dot02 = _v0$1.dot( _v2$1 );
		const dot11 = _v1$3.dot( _v1$3 );
		const dot12 = _v1$3.dot( _v2$1 );
		const denom = ( dot00 * dot11 - dot01 * dot01 );
		if ( target === undefined ) {
			console.warn( 'THREE.Triangle: .getBarycoord() target is now required' );
			target = new Vector3();
		}
		if ( denom === 0 ) {
			return target.set( - 2, - 1, - 1 );
		}
		const invDenom = 1 / denom;
		const u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;
		const v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;
		return target.set( 1 - u - v, v, u );
	}
	static containsPoint( point, a, b, c ) {
		this.getBarycoord( point, a, b, c, _v3 );
		return ( _v3.x >= 0 ) && ( _v3.y >= 0 ) && ( ( _v3.x + _v3.y ) <= 1 );
	}
	static getUV( point, p1, p2, p3, uv1, uv2, uv3, target ) {
		this.getBarycoord( point, p1, p2, p3, _v3 );
		target.set( 0, 0 );
		target.addScaledVector( uv1, _v3.x );
		target.addScaledVector( uv2, _v3.y );
		target.addScaledVector( uv3, _v3.z );
		return target;
	}
	static isFrontFacing( a, b, c, direction ) {
		_v0$1.subVectors( c, b );
		_v1$3.subVectors( a, b );
		return ( _v0$1.cross( _v1$3 ).dot( direction ) < 0 ) ? true : false;
	}
	set( a, b, c ) {
		this.a.copy( a );
		this.b.copy( b );
		this.c.copy( c );
		return this;
	}
	setFromPointsAndIndices( points, i0, i1, i2 ) {
		this.a.copy( points[ i0 ] );
		this.b.copy( points[ i1 ] );
		this.c.copy( points[ i2 ] );
		return this;
	}
	clone() {
		return new this.constructor().copy( this );
	}
	copy( triangle ) {
		this.a.copy( triangle.a );
		this.b.copy( triangle.b );
		this.c.copy( triangle.c );
		return this;
	}
	getArea() {
		_v0$1.subVectors( this.c, this.b );
		_v1$3.subVectors( this.a, this.b );
		return _v0$1.cross( _v1$3 ).length() * 0.5;
	}
	getMidpoint( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Triangle: .getMidpoint() target is now required' );
			target = new Vector3();
		}
		return target.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );
	}
	getNormal( target ) {
		return Triangle.getNormal( this.a, this.b, this.c, target );
	}
	getPlane( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Triangle: .getPlane() target is now required' );
			target = new Plane();
		}
		return target.setFromCoplanarPoints( this.a, this.b, this.c );
	}
	getBarycoord( point, target ) {
		return Triangle.getBarycoord( point, this.a, this.b, this.c, target );
	}
	getUV( point, uv1, uv2, uv3, target ) {
		return Triangle.getUV( point, this.a, this.b, this.c, uv1, uv2, uv3, target );
	}
	containsPoint( point ) {
		return Triangle.containsPoint( point, this.a, this.b, this.c );
	}
	isFrontFacing( direction ) {
		return Triangle.isFrontFacing( this.a, this.b, this.c, direction );
	}
	intersectsBox( box ) {
		return box.intersectsTriangle( this );
	}
	closestPointToPoint( p, target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Triangle: .closestPointToPoint() target is now required' );
			target = new Vector3();
		}
		const a = this.a, b = this.b, c = this.c;
		let v, w;
		_vab.subVectors( b, a );
		_vac.subVectors( c, a );
		_vap.subVectors( p, a );
		const d1 = _vab.dot( _vap );
		const d2 = _vac.dot( _vap );
		if ( d1 <= 0 && d2 <= 0 ) {
			return target.copy( a );
		}
		_vbp.subVectors( p, b );
		const d3 = _vab.dot( _vbp );
		const d4 = _vac.dot( _vbp );
		if ( d3 >= 0 && d4 <= d3 ) {
			return target.copy( b );
		}
		const vc = d1 * d4 - d3 * d2;
		if ( vc <= 0 && d1 >= 0 && d3 <= 0 ) {
			v = d1 / ( d1 - d3 );
			return target.copy( a ).addScaledVector( _vab, v );
		}
		_vcp.subVectors( p, c );
		const d5 = _vab.dot( _vcp );
		const d6 = _vac.dot( _vcp );
		if ( d6 >= 0 && d5 <= d6 ) {
			return target.copy( c );
		}
		const vb = d5 * d2 - d1 * d6;
		if ( vb <= 0 && d2 >= 0 && d6 <= 0 ) {
			w = d2 / ( d2 - d6 );
			return target.copy( a ).addScaledVector( _vac, w );
		}
		const va = d3 * d6 - d5 * d4;
		if ( va <= 0 && ( d4 - d3 ) >= 0 && ( d5 - d6 ) >= 0 ) {
			_vbc.subVectors( c, b );
			w = ( d4 - d3 ) / ( ( d4 - d3 ) + ( d5 - d6 ) );
			return target.copy( b ).addScaledVector( _vbc, w );
		}
		const denom = 1 / ( va + vb + vc );
		v = vb * denom;
		w = vc * denom;
		return target.copy( a ).addScaledVector( _vab, v ).addScaledVector( _vac, w );
	}
	equals( triangle ) {
		return triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );
	}
}
const _colorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,
	'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,
	'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,
	'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,
	'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,
	'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,
	'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,
	'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,
	'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,
	'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,
	'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,
	'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,
	'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,
	'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,
	'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,
	'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,
	'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,
	'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,
	'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,
	'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'rebeccapurple': 0x663399, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,
	'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,
	'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,
	'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,
	'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };
const _hslA = { h: 0, s: 0, l: 0 };
const _hslB = { h: 0, s: 0, l: 0 };
function hue2rgb( p, q, t ) {
	if ( t < 0 ) t += 1;
	if ( t > 1 ) t -= 1;
	if ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;
	if ( t < 1 / 2 ) return q;
	if ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );
	return p;
}
function SRGBToLinear( c ) {
	return ( c < 0.04045 ) ? c * 0.0773993808 : Math.pow( c * 0.9478672986 + 0.0521327014, 2.4 );
}
function LinearToSRGB( c ) {
	return ( c < 0.0031308 ) ? c * 12.92 : 1.055 * ( Math.pow( c, 0.41666 ) ) - 0.055;
}
class Color {
	constructor( r, g, b ) {
		Object.defineProperty( this, 'isColor', { value: true } );
		if ( g === undefined && b === undefined ) {
			return this.set( r );
		}
		return this.setRGB( r, g, b );
	}
	set( value ) {
		if ( value && value.isColor ) {
			this.copy( value );
		} else if ( typeof value === 'number' ) {
			this.setHex( value );
		} else if ( typeof value === 'string' ) {
			this.setStyle( value );
		}
		return this;
	}
	setScalar( scalar ) {
		this.r = scalar;
		this.g = scalar;
		this.b = scalar;
		return this;
	}
	setHex( hex ) {
		hex = Math.floor( hex );
		this.r = ( hex >> 16 & 255 ) / 255;
		this.g = ( hex >> 8 & 255 ) / 255;
		this.b = ( hex & 255 ) / 255;
		return this;
	}
	setRGB( r, g, b ) {
		this.r = r;
		this.g = g;
		this.b = b;
		return this;
	}
	setHSL( h, s, l ) {
		h = MathUtils.euclideanModulo( h, 1 );
		s = MathUtils.clamp( s, 0, 1 );
		l = MathUtils.clamp( l, 0, 1 );
		if ( s === 0 ) {
			this.r = this.g = this.b = l;
		} else {
			const p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );
			const q = ( 2 * l ) - p;
			this.r = hue2rgb( q, p, h + 1 / 3 );
			this.g = hue2rgb( q, p, h );
			this.b = hue2rgb( q, p, h - 1 / 3 );
		}
		return this;
	}
	setStyle( style ) {
		function handleAlpha( string ) {
			if ( string === undefined ) return;
			if ( parseFloat( string ) < 1 ) {
				console.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );
			}
		}
		let m;
		if ( m = /^((?:rgb|hsl)a?)\(\s*([^\)]*)\)/.exec( style ) ) {
			let color;
			const name = m[ 1 ];
			const components = m[ 2 ];
			switch ( name ) {
				case 'rgb':
				case 'rgba':
					if ( color = /^(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
						this.r = Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255;
						this.g = Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255;
						this.b = Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255;
						handleAlpha( color[ 5 ] );
						return this;
					}
					if ( color = /^(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
						this.r = Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100;
						this.g = Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100;
						this.b = Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100;
						handleAlpha( color[ 5 ] );
						return this;
					}
					break;
				case 'hsl':
				case 'hsla':
					if ( color = /^([0-9]*\.?[0-9]+)\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
						const h = parseFloat( color[ 1 ] ) / 360;
						const s = parseInt( color[ 2 ], 10 ) / 100;
						const l = parseInt( color[ 3 ], 10 ) / 100;
						handleAlpha( color[ 5 ] );
						return this.setHSL( h, s, l );
					}
					break;
			}
		} else if ( m = /^\#([A-Fa-f0-9]+)$/.exec( style ) ) {
			const hex = m[ 1 ];
			const size = hex.length;
			if ( size === 3 ) {
				this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 0 ), 16 ) / 255;
				this.g = parseInt( hex.charAt( 1 ) + hex.charAt( 1 ), 16 ) / 255;
				this.b = parseInt( hex.charAt( 2 ) + hex.charAt( 2 ), 16 ) / 255;
				return this;
			} else if ( size === 6 ) {
				this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 1 ), 16 ) / 255;
				this.g = parseInt( hex.charAt( 2 ) + hex.charAt( 3 ), 16 ) / 255;
				this.b = parseInt( hex.charAt( 4 ) + hex.charAt( 5 ), 16 ) / 255;
				return this;
			}
		}
		if ( style && style.length > 0 ) {
			return this.setColorName( style );
		}
		return this;
	}
	setColorName( style ) {
		const hex = _colorKeywords[ style ];
		if ( hex !== undefined ) {
			this.setHex( hex );
		} else {
			console.warn( 'THREE.Color: Unknown color ' + style );
		}
		return this;
	}
	clone() {
		return new this.constructor( this.r, this.g, this.b );
	}
	copy( color ) {
		this.r = color.r;
		this.g = color.g;
		this.b = color.b;
		return this;
	}
	copyGammaToLinear( color, gammaFactor ) {
		if ( gammaFactor === undefined ) gammaFactor = 2.0;
		this.r = Math.pow( color.r, gammaFactor );
		this.g = Math.pow( color.g, gammaFactor );
		this.b = Math.pow( color.b, gammaFactor );
		return this;
	}
	copyLinearToGamma( color, gammaFactor ) {
		if ( gammaFactor === undefined ) gammaFactor = 2.0;
		const safeInverse = ( gammaFactor > 0 ) ? ( 1.0 / gammaFactor ) : 1.0;
		this.r = Math.pow( color.r, safeInverse );
		this.g = Math.pow( color.g, safeInverse );
		this.b = Math.pow( color.b, safeInverse );
		return this;
	}
	convertGammaToLinear( gammaFactor ) {
		this.copyGammaToLinear( this, gammaFactor );
		return this;
	}
	convertLinearToGamma( gammaFactor ) {
		this.copyLinearToGamma( this, gammaFactor );
		return this;
	}
	copySRGBToLinear( color ) {
		this.r = SRGBToLinear( color.r );
		this.g = SRGBToLinear( color.g );
		this.b = SRGBToLinear( color.b );
		return this;
	}
	copyLinearToSRGB( color ) {
		this.r = LinearToSRGB( color.r );
		this.g = LinearToSRGB( color.g );
		this.b = LinearToSRGB( color.b );
		return this;
	}
	convertSRGBToLinear() {
		this.copySRGBToLinear( this );
		return this;
	}
	convertLinearToSRGB() {
		this.copyLinearToSRGB( this );
		return this;
	}
	getHex() {
		return ( this.r * 255 ) << 16 ^ ( this.g * 255 ) << 8 ^ ( this.b * 255 ) << 0;
	}
	getHexString() {
		return ( '000000' + this.getHex().toString( 16 ) ).slice( - 6 );
	}
	getHSL( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Color: .getHSL() target is now required' );
			target = { h: 0, s: 0, l: 0 };
		}
		const r = this.r, g = this.g, b = this.b;
		const max = Math.max( r, g, b );
		const min = Math.min( r, g, b );
		let hue, saturation;
		const lightness = ( min + max ) / 2.0;
		if ( min === max ) {
			hue = 0;
			saturation = 0;
		} else {
			const delta = max - min;
			saturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );
			switch ( max ) {
				case r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;
				case g: hue = ( b - r ) / delta + 2; break;
				case b: hue = ( r - g ) / delta + 4; break;
			}
			hue /= 6;
		}
		target.h = hue;
		target.s = saturation;
		target.l = lightness;
		return target;
	}
	getStyle() {
		return 'rgb(' + ( ( this.r * 255 ) | 0 ) + ',' + ( ( this.g * 255 ) | 0 ) + ',' + ( ( this.b * 255 ) | 0 ) + ')';
	}
	offsetHSL( h, s, l ) {
		this.getHSL( _hslA );
		_hslA.h += h; _hslA.s += s; _hslA.l += l;
		this.setHSL( _hslA.h, _hslA.s, _hslA.l );
		return this;
	}
	add( color ) {
		this.r += color.r;
		this.g += color.g;
		this.b += color.b;
		return this;
	}
	addColors( color1, color2 ) {
		this.r = color1.r + color2.r;
		this.g = color1.g + color2.g;
		this.b = color1.b + color2.b;
		return this;
	}
	addScalar( s ) {
		this.r += s;
		this.g += s;
		this.b += s;
		return this;
	}
	sub( color ) {
		this.r = Math.max( 0, this.r - color.r );
		this.g = Math.max( 0, this.g - color.g );
		this.b = Math.max( 0, this.b - color.b );
		return this;
	}
	multiply( color ) {
		this.r *= color.r;
		this.g *= color.g;
		this.b *= color.b;
		return this;
	}
	multiplyScalar( s ) {
		this.r *= s;
		this.g *= s;
		this.b *= s;
		return this;
	}
	lerp( color, alpha ) {
		this.r += ( color.r - this.r ) * alpha;
		this.g += ( color.g - this.g ) * alpha;
		this.b += ( color.b - this.b ) * alpha;
		return this;
	}
	lerpHSL( color, alpha ) {
		this.getHSL( _hslA );
		color.getHSL( _hslB );
		const h = MathUtils.lerp( _hslA.h, _hslB.h, alpha );
		const s = MathUtils.lerp( _hslA.s, _hslB.s, alpha );
		const l = MathUtils.lerp( _hslA.l, _hslB.l, alpha );
		this.setHSL( h, s, l );
		return this;
	}
	equals( c ) {
		return ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );
	}
	fromArray( array, offset ) {
		if ( offset === undefined ) offset = 0;
		this.r = array[ offset ];
		this.g = array[ offset + 1 ];
		this.b = array[ offset + 2 ];
		return this;
	}
	toArray( array, offset ) {
		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;
		array[ offset ] = this.r;
		array[ offset + 1 ] = this.g;
		array[ offset + 2 ] = this.b;
		return array;
	}
	fromBufferAttribute( attribute, index ) {
		this.r = attribute.getX( index );
		this.g = attribute.getY( index );
		this.b = attribute.getZ( index );
		if ( attribute.normalized === true ) {
			this.r /= 255;
			this.g /= 255;
			this.b /= 255;
		}
		return this;
	}
	toJSON() {
		return this.getHex();
	}
}
Color.NAMES = _colorKeywords;
Color.prototype.r = 1;
Color.prototype.g = 1;
Color.prototype.b = 1;
class Face3 {
	constructor( a, b, c, normal, color, materialIndex ) {
		this.a = a;
		this.b = b;
		this.c = c;
		this.normal = ( normal && normal.isVector3 ) ? normal : new Vector3();
		this.vertexNormals = Array.isArray( normal ) ? normal : [];
		this.color = ( color && color.isColor ) ? color : new Color();
		this.vertexColors = Array.isArray( color ) ? color : [];
		this.materialIndex = materialIndex !== undefined ? materialIndex : 0;
	}
	clone() {
		return new this.constructor().copy( this );
	}
	copy( source ) {
		this.a = source.a;
		this.b = source.b;
		this.c = source.c;
		this.normal.copy( source.normal );
		this.color.copy( source.color );
		this.materialIndex = source.materialIndex;
		for ( let i = 0, il = source.vertexNormals.length; i < il; i ++ ) {
			this.vertexNormals[ i ] = source.vertexNormals[ i ].clone();
		}
		for ( let i = 0, il = source.vertexColors.length; i < il; i ++ ) {
			this.vertexColors[ i ] = source.vertexColors[ i ].clone();
		}
		return this;
	}
}
let materialId = 0;
function Material() {
	Object.defineProperty( this, 'id', { value: materialId ++ } );
	this.uuid = MathUtils.generateUUID();
	this.name = '';
	this.type = 'Material';
	this.fog = true;
	this.blending = NormalBlending;
	this.side = FrontSide;
	this.flatShading = false;
	this.vertexColors = false;
	this.opacity = 1;
	this.transparent = false;
	this.blendSrc = SrcAlphaFactor;
	this.blendDst = OneMinusSrcAlphaFactor;
	this.blendEquation = AddEquation;
	this.blendSrcAlpha = null;
	this.blendDstAlpha = null;
	this.blendEquationAlpha = null;
	this.depthFunc = LessEqualDepth;
	this.depthTest = true;
	this.depthWrite = true;
	this.stencilWriteMask = 0xff;
	this.stencilFunc = AlwaysStencilFunc;
	this.stencilRef = 0;
	this.stencilFuncMask = 0xff;
	this.stencilFail = KeepStencilOp;
	this.stencilZFail = KeepStencilOp;
	this.stencilZPass = KeepStencilOp;
	this.stencilWrite = false;
	this.clippingPlanes = null;
	this.clipIntersection = false;
	this.clipShadows = false;
	this.shadowSide = null;
	this.colorWrite = true;
	this.precision = null;
	this.polygonOffset = false;
	this.polygonOffsetFactor = 0;
	this.polygonOffsetUnits = 0;
	this.dithering = false;
	this.alphaTest = 0;
	this.premultipliedAlpha = false;
	this.visible = true;
	this.toneMapped = true;
	this.userData = {};
	this.version = 0;
}
Material.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
	constructor: Material,
	isMaterial: true,
	onBeforeCompile: function (  ) {},
	customProgramCacheKey: function () {
		return this.onBeforeCompile.toString();
	},
	setValues: function ( values ) {
		if ( values === undefined ) return;
		for ( const key in values ) {
			const newValue = values[ key ];
			if ( newValue === undefined ) {
				console.warn( "THREE.Material: '" + key + "' parameter is undefined." );
				continue;
			}
			if ( key === 'shading' ) {
				console.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
				this.flatShading = ( newValue === FlatShading ) ? true : false;
				continue;
			}
			const currentValue = this[ key ];
			if ( currentValue === undefined ) {
				console.warn( "THREE." + this.type + ": '" + key + "' is not a property of this material." );
				continue;
			}
			if ( currentValue && currentValue.isColor ) {
				currentValue.set( newValue );
			} else if ( ( currentValue && currentValue.isVector3 ) && ( newValue && newValue.isVector3 ) ) {
				currentValue.copy( newValue );
			} else {
				this[ key ] = newValue;
			}
		}
	},
	toJSON: function ( meta ) {
		const isRoot = ( meta === undefined || typeof meta === 'string' );
		if ( isRoot ) {
			meta = {
				textures: {},
				images: {}
			};
		}
		const data = {
			metadata: {
				version: 4.5,
				type: 'Material',
				generator: 'Material.toJSON'
			}
		};
		data.uuid = this.uuid;
		data.type = this.type;
		if ( this.name !== '' ) data.name = this.name;
		if ( this.color && this.color.isColor ) data.color = this.color.getHex();
		if ( this.roughness !== undefined ) data.roughness = this.roughness;
		if ( this.metalness !== undefined ) data.metalness = this.metalness;
		if ( this.sheen && this.sheen.isColor ) data.sheen = this.sheen.getHex();
		if ( this.emissive && this.emissive.isColor ) data.emissive = this.emissive.getHex();
		if ( this.emissiveIntensity && this.emissiveIntensity !== 1 ) data.emissiveIntensity = this.emissiveIntensity;
		if ( this.specular && this.specular.isColor ) data.specular = this.specular.getHex();
		if ( this.shininess !== undefined ) data.shininess = this.shininess;
		if ( this.clearcoat !== undefined ) data.clearcoat = this.clearcoat;
		if ( this.clearcoatRoughness !== undefined ) data.clearcoatRoughness = this.clearcoatRoughness;
		if ( this.clearcoatMap && this.clearcoatMap.isTexture ) {
			data.clearcoatMap = this.clearcoatMap.toJSON( meta ).uuid;
		}
		if ( this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture ) {
			data.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON( meta ).uuid;
		}
		if ( this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture ) {
			data.clearcoatNormalMap = this.clearcoatNormalMap.toJSON( meta ).uuid;
			data.clearcoatNormalScale = this.clearcoatNormalScale.toArray();
		}
		if ( this.map && this.map.isTexture ) data.map = this.map.toJSON( meta ).uuid;
		if ( this.matcap && this.matcap.isTexture ) data.matcap = this.matcap.toJSON( meta ).uuid;
		if ( this.alphaMap && this.alphaMap.isTexture ) data.alphaMap = this.alphaMap.toJSON( meta ).uuid;
		if ( this.lightMap && this.lightMap.isTexture ) data.lightMap = this.lightMap.toJSON( meta ).uuid;
		if ( this.aoMap && this.aoMap.isTexture ) {
			data.aoMap = this.aoMap.toJSON( meta ).uuid;
			data.aoMapIntensity = this.aoMapIntensity;
		}
		if ( this.bumpMap && this.bumpMap.isTexture ) {
			data.bumpMap = this.bumpMap.toJSON( meta ).uuid;
			data.bumpScale = this.bumpScale;
		}
		if ( this.normalMap && this.normalMap.isTexture ) {
			data.normalMap = this.normalMap.toJSON( meta ).uuid;
			data.normalMapType = this.normalMapType;
			data.normalScale = this.normalScale.toArray();
		}
		if ( this.displacementMap && this.displacementMap.isTexture ) {
			data.displacementMap = this.displacementMap.toJSON( meta ).uuid;
			data.displacementScale = this.displacementScale;
			data.displacementBias = this.displacementBias;
		}
		if ( this.roughnessMap && this.roughnessMap.isTexture ) data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid;
		if ( this.metalnessMap && this.metalnessMap.isTexture ) data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid;
		if ( this.emissiveMap && this.emissiveMap.isTexture ) data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid;
		if ( this.specularMap && this.specularMap.isTexture ) data.specularMap = this.specularMap.toJSON( meta ).uuid;
		if ( this.envMap && this.envMap.isTexture ) {
			data.envMap = this.envMap.toJSON( meta ).uuid;
			data.reflectivity = this.reflectivity;
			data.refractionRatio = this.refractionRatio;
			if ( this.combine !== undefined ) data.combine = this.combine;
			if ( this.envMapIntensity !== undefined ) data.envMapIntensity = this.envMapIntensity;
		}
		if ( this.gradientMap && this.gradientMap.isTexture ) {
			data.gradientMap = this.gradientMap.toJSON( meta ).uuid;
		}
		if ( this.size !== undefined ) data.size = this.size;
		if ( this.sizeAttenuation !== undefined ) data.sizeAttenuation = this.sizeAttenuation;
		if ( this.blending !== NormalBlending ) data.blending = this.blending;
		if ( this.flatShading === true ) data.flatShading = this.flatShading;
		if ( this.side !== FrontSide ) data.side = this.side;
		if ( this.vertexColors ) data.vertexColors = true;
		if ( this.opacity < 1 ) data.opacity = this.opacity;
		if ( this.transparent === true ) data.transparent = this.transparent;
		data.depthFunc = this.depthFunc;
		data.depthTest = this.depthTest;
		data.depthWrite = this.depthWrite;
		data.stencilWrite = this.stencilWrite;
		data.stencilWriteMask = this.stencilWriteMask;
		data.stencilFunc = this.stencilFunc;
		data.stencilRef = this.stencilRef;
		data.stencilFuncMask = this.stencilFuncMask;
		data.stencilFail = this.stencilFail;
		data.stencilZFail = this.stencilZFail;
		data.stencilZPass = this.stencilZPass;
		if ( this.rotation && this.rotation !== 0 ) data.rotation = this.rotation;
		if ( this.polygonOffset === true ) data.polygonOffset = true;
		if ( this.polygonOffsetFactor !== 0 ) data.polygonOffsetFactor = this.polygonOffsetFactor;
		if ( this.polygonOffsetUnits !== 0 ) data.polygonOffsetUnits = this.polygonOffsetUnits;
		if ( this.linewidth && this.linewidth !== 1 ) data.linewidth = this.linewidth;
		if ( this.dashSize !== undefined ) data.dashSize = this.dashSize;
		if ( this.gapSize !== undefined ) data.gapSize = this.gapSize;
		if ( this.scale !== undefined ) data.scale = this.scale;
		if ( this.dithering === true ) data.dithering = true;
		if ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;
		if ( this.premultipliedAlpha === true ) data.premultipliedAlpha = this.premultipliedAlpha;
		if ( this.wireframe === true ) data.wireframe = this.wireframe;
		if ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;
		if ( this.wireframeLinecap !== 'round' ) data.wireframeLinecap = this.wireframeLinecap;
		if ( this.wireframeLinejoin !== 'round' ) data.wireframeLinejoin = this.wireframeLinejoin;
		if ( this.morphTargets === true ) data.morphTargets = true;
		if ( this.morphNormals === true ) data.morphNormals = true;
		if ( this.skinning === true ) data.skinning = true;
		if ( this.visible === false ) data.visible = false;
		if ( this.toneMapped === false ) data.toneMapped = false;
		if ( JSON.stringify( this.userData ) !== '{}' ) data.userData = this.userData;
		function extractFromCache( cache ) {
			const values = [];
			for ( const key in cache ) {
				const data = cache[ key ];
				delete data.metadata;
				values.push( data );
			}
			return values;
		}
		if ( isRoot ) {
			const textures = extractFromCache( meta.textures );
			const images = extractFromCache( meta.images );
			if ( textures.length > 0 ) data.textures = textures;
			if ( images.length > 0 ) data.images = images;
		}
		return data;
	},
	clone: function () {
		return new this.constructor().copy( this );
	},
	copy: function ( source ) {
		this.name = source.name;
		this.fog = source.fog;
		this.blending = source.blending;
		this.side = source.side;
		this.flatShading = source.flatShading;
		this.vertexColors = source.vertexColors;
		this.opacity = source.opacity;
		this.transparent = source.transparent;
		this.blendSrc = source.blendSrc;
		this.blendDst = source.blendDst;
		this.blendEquation = source.blendEquation;
		this.blendSrcAlpha = source.blendSrcAlpha;
		this.blendDstAlpha = source.blendDstAlpha;
		this.blendEquationAlpha = source.blendEquationAlpha;
		this.depthFunc = source.depthFunc;
		this.depthTest = source.depthTest;
		this.depthWrite = source.depthWrite;
		this.stencilWriteMask = source.stencilWriteMask;
		this.stencilFunc = source.stencilFunc;
		this.stencilRef = source.stencilRef;
		this.stencilFuncMask = source.stencilFuncMask;
		this.stencilFail = source.stencilFail;
		this.stencilZFail = source.stencilZFail;
		this.stencilZPass = source.stencilZPass;
		this.stencilWrite = source.stencilWrite;
		const srcPlanes = source.clippingPlanes;
		let dstPlanes = null;
		if ( srcPlanes !== null ) {
			const n = srcPlanes.length;
			dstPlanes = new Array( n );
			for ( let i = 0; i !== n; ++ i ) {
				dstPlanes[ i ] = srcPlanes[ i ].clone();
			}
		}
		this.clippingPlanes = dstPlanes;
		this.clipIntersection = source.clipIntersection;
		this.clipShadows = source.clipShadows;
		this.shadowSide = source.shadowSide;
		this.colorWrite = source.colorWrite;
		this.precision = source.precision;
		this.polygonOffset = source.polygonOffset;
		this.polygonOffsetFactor = source.polygonOffsetFactor;
		this.polygonOffsetUnits = source.polygonOffsetUnits;
		this.dithering = source.dithering;
		this.alphaTest = source.alphaTest;
		this.premultipliedAlpha = source.premultipliedAlpha;
		this.visible = source.visible;
		this.toneMapped = source.toneMapped;
		this.userData = JSON.parse( JSON.stringify( source.userData ) );
		return this;
	},
	dispose: function () {
		this.dispatchEvent( { type: 'dispose' } );
	}
} );
Object.defineProperty( Material.prototype, 'needsUpdate', {
	set: function ( value ) {
		if ( value === true ) this.version ++;
	}
} );
function MeshBasicMaterial( parameters ) {
	Material.call( this );
	this.type = 'MeshBasicMaterial';
	this.color = new Color( 0xffffff );
	this.map = null;
	this.lightMap = null;
	this.lightMapIntensity = 1.0;
	this.aoMap = null;
	this.aoMapIntensity = 1.0;
	this.specularMap = null;
	this.alphaMap = null;
	this.envMap = null;
	this.combine = MultiplyOperation;
	this.reflectivity = 1;
	this.refractionRatio = 0.98;
	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.wireframeLinecap = 'round';
	this.wireframeLinejoin = 'round';
	this.skinning = false;
	this.morphTargets = false;
	this.setValues( parameters );
}
MeshBasicMaterial.prototype = Object.create( Material.prototype );
MeshBasicMaterial.prototype.constructor = MeshBasicMaterial;
MeshBasicMaterial.prototype.isMeshBasicMaterial = true;
MeshBasicMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.color.copy( source.color );
	this.map = source.map;
	this.lightMap = source.lightMap;
	this.lightMapIntensity = source.lightMapIntensity;
	this.aoMap = source.aoMap;
	this.aoMapIntensity = source.aoMapIntensity;
	this.specularMap = source.specularMap;
	this.alphaMap = source.alphaMap;
	this.envMap = source.envMap;
	this.combine = source.combine;
	this.reflectivity = source.reflectivity;
	this.refractionRatio = source.refractionRatio;
	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	this.wireframeLinecap = source.wireframeLinecap;
	this.wireframeLinejoin = source.wireframeLinejoin;
	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	return this;
};
const _vector$3 = new Vector3();
const _vector2$1 = new Vector2();
function BufferAttribute( array, itemSize, normalized ) {
	if ( Array.isArray( array ) ) {
		throw new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );
	}
	this.name = '';
	this.array = array;
	this.itemSize = itemSize;
	this.count = array !== undefined ? array.length / itemSize : 0;
	this.normalized = normalized === true;
	this.usage = StaticDrawUsage;
	this.updateRange = { offset: 0, count: - 1 };
	this.version = 0;
}
Object.defineProperty( BufferAttribute.prototype, 'needsUpdate', {
	set: function ( value ) {
		if ( value === true ) this.version ++;
	}
} );
Object.assign( BufferAttribute.prototype, {
	isBufferAttribute: true,
	onUploadCallback: function () {},
	setUsage: function ( value ) {
		this.usage = value;
		return this;
	},
	copy: function ( source ) {
		this.name = source.name;
		this.array = new source.array.constructor( source.array );
		this.itemSize = source.itemSize;
		this.count = source.count;
		this.normalized = source.normalized;
		this.usage = source.usage;
		return this;
	},
	copyAt: function ( index1, attribute, index2 ) {
		index1 *= this.itemSize;
		index2 *= attribute.itemSize;
		for ( let i = 0, l = this.itemSize; i < l; i ++ ) {
			this.array[ index1 + i ] = attribute.array[ index2 + i ];
		}
		return this;
	},
	copyArray: function ( array ) {
		this.array.set( array );
		return this;
	},
	copyColorsArray: function ( colors ) {
		const array = this.array;
		let offset = 0;
		for ( let i = 0, l = colors.length; i < l; i ++ ) {
			let color = colors[ i ];
			if ( color === undefined ) {
				console.warn( 'THREE.BufferAttribute.copyColorsArray(): color is undefined', i );
				color = new Color();
			}
			array[ offset ++ ] = color.r;
			array[ offset ++ ] = color.g;
			array[ offset ++ ] = color.b;
		}
		return this;
	},
	copyVector2sArray: function ( vectors ) {
		const array = this.array;
		let offset = 0;
		for ( let i = 0, l = vectors.length; i < l; i ++ ) {
			let vector = vectors[ i ];
			if ( vector === undefined ) {
				console.warn( 'THREE.BufferAttribute.copyVector2sArray(): vector is undefined', i );
				vector = new Vector2();
			}
			array[ offset ++ ] = vector.x;
			array[ offset ++ ] = vector.y;
		}
		return this;
	},
	copyVector3sArray: function ( vectors ) {
		const array = this.array;
		let offset = 0;
		for ( let i = 0, l = vectors.length; i < l; i ++ ) {
			let vector = vectors[ i ];
			if ( vector === undefined ) {
				console.warn( 'THREE.BufferAttribute.copyVector3sArray(): vector is undefined', i );
				vector = new Vector3();
			}
			array[ offset ++ ] = vector.x;
			array[ offset ++ ] = vector.y;
			array[ offset ++ ] = vector.z;
		}
		return this;
	},
	copyVector4sArray: function ( vectors ) {
		const array = this.array;
		let offset = 0;
		for ( let i = 0, l = vectors.length; i < l; i ++ ) {
			let vector = vectors[ i ];
			if ( vector === undefined ) {
				console.warn( 'THREE.BufferAttribute.copyVector4sArray(): vector is undefined', i );
				vector = new Vector4();
			}
			array[ offset ++ ] = vector.x;
			array[ offset ++ ] = vector.y;
			array[ offset ++ ] = vector.z;
			array[ offset ++ ] = vector.w;
		}
		return this;
	},
	applyMatrix3: function ( m ) {
		if ( this.itemSize === 2 ) {
			for ( let i = 0, l = this.count; i < l; i ++ ) {
				_vector2$1.fromBufferAttribute( this, i );
				_vector2$1.applyMatrix3( m );
				this.setXY( i, _vector2$1.x, _vector2$1.y );
			}
		} else if ( this.itemSize === 3 ) {
			for ( let i = 0, l = this.count; i < l; i ++ ) {
				_vector$3.fromBufferAttribute( this, i );
				_vector$3.applyMatrix3( m );
				this.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );
			}
		}
		return this;
	},
	applyMatrix4: function ( m ) {
		for ( let i = 0, l = this.count; i < l; i ++ ) {
			_vector$3.x = this.getX( i );
			_vector$3.y = this.getY( i );
			_vector$3.z = this.getZ( i );
			_vector$3.applyMatrix4( m );
			this.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );
		}
		return this;
	},
	applyNormalMatrix: function ( m ) {
		for ( let i = 0, l = this.count; i < l; i ++ ) {
			_vector$3.x = this.getX( i );
			_vector$3.y = this.getY( i );
			_vector$3.z = this.getZ( i );
			_vector$3.applyNormalMatrix( m );
			this.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );
		}
		return this;
	},
	transformDirection: function ( m ) {
		for ( let i = 0, l = this.count; i < l; i ++ ) {
			_vector$3.x = this.getX( i );
			_vector$3.y = this.getY( i );
			_vector$3.z = this.getZ( i );
			_vector$3.transformDirection( m );
			this.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );
		}
		return this;
	},
	set: function ( value, offset ) {
		if ( offset === undefined ) offset = 0;
		this.array.set( value, offset );
		return this;
	},
	getX: function ( index ) {
		return this.array[ index * this.itemSize ];
	},
	setX: function ( index, x ) {
		this.array[ index * this.itemSize ] = x;
		return this;
	},
	getY: function ( index ) {
		return this.array[ index * this.itemSize + 1 ];
	},
	setY: function ( index, y ) {
		this.array[ index * this.itemSize + 1 ] = y;
		return this;
	},
	getZ: function ( index ) {
		return this.array[ index * this.itemSize + 2 ];
	},
	setZ: function ( index, z ) {
		this.array[ index * this.itemSize + 2 ] = z;
		return this;
	},
	getW: function ( index ) {
		return this.array[ index * this.itemSize + 3 ];
	},
	setW: function ( index, w ) {
		this.array[ index * this.itemSize + 3 ] = w;
		return this;
	},
	setXY: function ( index, x, y ) {
		index *= this.itemSize;
		this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;
		return this;
	},
	setXYZ: function ( index, x, y, z ) {
		index *= this.itemSize;
		this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;
		this.array[ index + 2 ] = z;
		return this;
	},
	setXYZW: function ( index, x, y, z, w ) {
		index *= this.itemSize;
		this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;
		this.array[ index + 2 ] = z;
		this.array[ index + 3 ] = w;
		return this;
	},
	onUpload: function ( callback ) {
		this.onUploadCallback = callback;
		return this;
	},
	clone: function () {
		return new this.constructor( this.array, this.itemSize ).copy( this );
	},
	toJSON: function () {
		return {
			itemSize: this.itemSize,
			type: this.array.constructor.name,
			array: Array.prototype.slice.call( this.array ),
			normalized: this.normalized
		};
	}
} );
function Int8BufferAttribute( array, itemSize, normalized ) {
	BufferAttribute.call( this, new Int8Array( array ), itemSize, normalized );
}
Int8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
Int8BufferAttribute.prototype.constructor = Int8BufferAttribute;
function Uint8BufferAttribute( array, itemSize, normalized ) {
	BufferAttribute.call( this, new Uint8Array( array ), itemSize, normalized );
}
Uint8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
Uint8BufferAttribute.prototype.constructor = Uint8BufferAttribute;
function Uint8ClampedBufferAttribute( array, itemSize, normalized ) {
	BufferAttribute.call( this, new Uint8ClampedArray( array ), itemSize, normalized );
}
Uint8ClampedBufferAttribute.prototype = Object.create( BufferAttribute.prototype );
Uint8ClampedBufferAttribute.prototype.constructor = Uint8ClampedBufferAttribute;
function Int16BufferAttribute( array, itemSize, normalized ) {
	BufferAttribute.call( this, new Int16Array( array ), itemSize, normalized );
}
Int16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
Int16BufferAttribute.prototype.constructor = Int16BufferAttribute;
function Uint16BufferAttribute( array, itemSize, normalized ) {
	BufferAttribute.call( this, new Uint16Array( array ), itemSize, normalized );
}
Uint16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
Uint16BufferAttribute.prototype.constructor = Uint16BufferAttribute;
function Int32BufferAttribute( array, itemSize, normalized ) {
	BufferAttribute.call( this, new Int32Array( array ), itemSize, normalized );
}
Int32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
Int32BufferAttribute.prototype.constructor = Int32BufferAttribute;
function Uint32BufferAttribute( array, itemSize, normalized ) {
	BufferAttribute.call( this, new Uint32Array( array ), itemSize, normalized );
}
Uint32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
Uint32BufferAttribute.prototype.constructor = Uint32BufferAttribute;
function Float32BufferAttribute( array, itemSize, normalized ) {
	BufferAttribute.call( this, new Float32Array( array ), itemSize, normalized );
}
Float32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
Float32BufferAttribute.prototype.constructor = Float32BufferAttribute;
function Float64BufferAttribute( array, itemSize, normalized ) {
	BufferAttribute.call( this, new Float64Array( array ), itemSize, normalized );
}
Float64BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
Float64BufferAttribute.prototype.constructor = Float64BufferAttribute;
class DirectGeometry {
	constructor() {
		this.vertices = [];
		this.normals = [];
		this.colors = [];
		this.uvs = [];
		this.uvs2 = [];
		this.groups = [];
		this.morphTargets = {};
		this.skinWeights = [];
		this.skinIndices = [];
		this.boundingBox = null;
		this.boundingSphere = null;
		this.verticesNeedUpdate = false;
		this.normalsNeedUpdate = false;
		this.colorsNeedUpdate = false;
		this.uvsNeedUpdate = false;
		this.groupsNeedUpdate = false;
	}
	computeGroups( geometry ) {
		const groups = [];
		let group, i;
		let materialIndex = undefined;
		const faces = geometry.faces;
		for ( i = 0; i < faces.length; i ++ ) {
			const face = faces[ i ];
			if ( face.materialIndex !== materialIndex ) {
				materialIndex = face.materialIndex;
				if ( group !== undefined ) {
					group.count = ( i * 3 ) - group.start;
					groups.push( group );
				}
				group = {
					start: i * 3,
					materialIndex: materialIndex
				};
			}
		}
		if ( group !== undefined ) {
			group.count = ( i * 3 ) - group.start;
			groups.push( group );
		}
		this.groups = groups;
	}
	fromGeometry( geometry ) {
		const faces = geometry.faces;
		const vertices = geometry.vertices;
		const faceVertexUvs = geometry.faceVertexUvs;
		const hasFaceVertexUv = faceVertexUvs[ 0 ] && faceVertexUvs[ 0 ].length > 0;
		const hasFaceVertexUv2 = faceVertexUvs[ 1 ] && faceVertexUvs[ 1 ].length > 0;
		const morphTargets = geometry.morphTargets;
		const morphTargetsLength = morphTargets.length;
		let morphTargetsPosition;
		if ( morphTargetsLength > 0 ) {
			morphTargetsPosition = [];
			for ( let i = 0; i < morphTargetsLength; i ++ ) {
				morphTargetsPosition[ i ] = {
					name: morphTargets[ i ].name,
				 	data: []
				};
			}
			this.morphTargets.position = morphTargetsPosition;
		}
		const morphNormals = geometry.morphNormals;
		const morphNormalsLength = morphNormals.length;
		let morphTargetsNormal;
		if ( morphNormalsLength > 0 ) {
			morphTargetsNormal = [];
			for ( let i = 0; i < morphNormalsLength; i ++ ) {
				morphTargetsNormal[ i ] = {
					name: morphNormals[ i ].name,
				 	data: []
				};
			}
			this.morphTargets.normal = morphTargetsNormal;
		}
		const skinIndices = geometry.skinIndices;
		const skinWeights = geometry.skinWeights;
		const hasSkinIndices = skinIndices.length === vertices.length;
		const hasSkinWeights = skinWeights.length === vertices.length;
		if ( vertices.length > 0 && faces.length === 0 ) {
			console.error( 'THREE.DirectGeometry: Faceless geometries are not supported.' );
		}
		for ( let i = 0; i < faces.length; i ++ ) {
			const face = faces[ i ];
			this.vertices.push( vertices[ face.a ], vertices[ face.b ], vertices[ face.c ] );
			const vertexNormals = face.vertexNormals;
			if ( vertexNormals.length === 3 ) {
				this.normals.push( vertexNormals[ 0 ], vertexNormals[ 1 ], vertexNormals[ 2 ] );
			} else {
				const normal = face.normal;
				this.normals.push( normal, normal, normal );
			}
			const vertexColors = face.vertexColors;
			if ( vertexColors.length === 3 ) {
				this.colors.push( vertexColors[ 0 ], vertexColors[ 1 ], vertexColors[ 2 ] );
			} else {
				const color = face.color;
				this.colors.push( color, color, color );
			}
			if ( hasFaceVertexUv === true ) {
				const vertexUvs = faceVertexUvs[ 0 ][ i ];
				if ( vertexUvs !== undefined ) {
					this.uvs.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );
				} else {
					console.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv ', i );
					this.uvs.push( new Vector2(), new Vector2(), new Vector2() );
				}
			}
			if ( hasFaceVertexUv2 === true ) {
				const vertexUvs = faceVertexUvs[ 1 ][ i ];
				if ( vertexUvs !== undefined ) {
					this.uvs2.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );
				} else {
					console.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv2 ', i );
					this.uvs2.push( new Vector2(), new Vector2(), new Vector2() );
				}
			}
			for ( let j = 0; j < morphTargetsLength; j ++ ) {
				const morphTarget = morphTargets[ j ].vertices;
				morphTargetsPosition[ j ].data.push( morphTarget[ face.a ], morphTarget[ face.b ], morphTarget[ face.c ] );
			}
			for ( let j = 0; j < morphNormalsLength; j ++ ) {
				const morphNormal = morphNormals[ j ].vertexNormals[ i ];
				morphTargetsNormal[ j ].data.push( morphNormal.a, morphNormal.b, morphNormal.c );
			}
			if ( hasSkinIndices ) {
				this.skinIndices.push( skinIndices[ face.a ], skinIndices[ face.b ], skinIndices[ face.c ] );
			}
			if ( hasSkinWeights ) {
				this.skinWeights.push( skinWeights[ face.a ], skinWeights[ face.b ], skinWeights[ face.c ] );
			}
		}
		this.computeGroups( geometry );
		this.verticesNeedUpdate = geometry.verticesNeedUpdate;
		this.normalsNeedUpdate = geometry.normalsNeedUpdate;
		this.colorsNeedUpdate = geometry.colorsNeedUpdate;
		this.uvsNeedUpdate = geometry.uvsNeedUpdate;
		this.groupsNeedUpdate = geometry.groupsNeedUpdate;
		if ( geometry.boundingSphere !== null ) {
			this.boundingSphere = geometry.boundingSphere.clone();
		}
		if ( geometry.boundingBox !== null ) {
			this.boundingBox = geometry.boundingBox.clone();
		}
		return this;
	}
}
function arrayMax( array ) {
	if ( array.length === 0 ) return - Infinity;
	let max = array[ 0 ];
	for ( let i = 1, l = array.length; i < l; ++ i ) {
		if ( array[ i ] > max ) max = array[ i ];
	}
	return max;
}
let _bufferGeometryId = 1;
const _m1$2 = new Matrix4();
const _obj = new Object3D();
const _offset = new Vector3();
const _box$2 = new Box3();
const _boxMorphTargets = new Box3();
const _vector$4 = new Vector3();
function BufferGeometry() {
	Object.defineProperty( this, 'id', { value: _bufferGeometryId += 2 } );
	this.uuid = MathUtils.generateUUID();
	this.name = '';
	this.type = 'BufferGeometry';
	this.index = null;
	this.attributes = {};
	this.morphAttributes = {};
	this.morphTargetsRelative = false;
	this.groups = [];
	this.boundingBox = null;
	this.boundingSphere = null;
	this.drawRange = { start: 0, count: Infinity };
	this.userData = {};
}
BufferGeometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
	constructor: BufferGeometry,
	isBufferGeometry: true,
	getIndex: function () {
		return this.index;
	},
	setIndex: function ( index ) {
		if ( Array.isArray( index ) ) {
			this.index = new ( arrayMax( index ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( index, 1 );
		} else {
			this.index = index;
		}
	},
	getAttribute: function ( name ) {
		return this.attributes[ name ];
	},
	setAttribute: function ( name, attribute ) {
		this.attributes[ name ] = attribute;
		return this;
	},
	deleteAttribute: function ( name ) {
		delete this.attributes[ name ];
		return this;
	},
	addGroup: function ( start, count, materialIndex ) {
		this.groups.push( {
			start: start,
			count: count,
			materialIndex: materialIndex !== undefined ? materialIndex : 0
		} );
	},
	clearGroups: function () {
		this.groups = [];
	},
	setDrawRange: function ( start, count ) {
		this.drawRange.start = start;
		this.drawRange.count = count;
	},
	applyMatrix4: function ( matrix ) {
		const position = this.attributes.position;
		if ( position !== undefined ) {
			position.applyMatrix4( matrix );
			position.needsUpdate = true;
		}
		const normal = this.attributes.normal;
		if ( normal !== undefined ) {
			const normalMatrix = new Matrix3().getNormalMatrix( matrix );
			normal.applyNormalMatrix( normalMatrix );
			normal.needsUpdate = true;
		}
		const tangent = this.attributes.tangent;
		if ( tangent !== undefined ) {
			tangent.transformDirection( matrix );
			tangent.needsUpdate = true;
		}
		if ( this.boundingBox !== null ) {
			this.computeBoundingBox();
		}
		if ( this.boundingSphere !== null ) {
			this.computeBoundingSphere();
		}
		return this;
	},
	rotateX: function ( angle ) {
		_m1$2.makeRotationX( angle );
		this.applyMatrix4( _m1$2 );
		return this;
	},
	rotateY: function ( angle ) {
		_m1$2.makeRotationY( angle );
		this.applyMatrix4( _m1$2 );
		return this;
	},
	rotateZ: function ( angle ) {
		_m1$2.makeRotationZ( angle );
		this.applyMatrix4( _m1$2 );
		return this;
	},
	translate: function ( x, y, z ) {
		_m1$2.makeTranslation( x, y, z );
		this.applyMatrix4( _m1$2 );
		return this;
	},
	scale: function ( x, y, z ) {
		_m1$2.makeScale( x, y, z );
		this.applyMatrix4( _m1$2 );
		return this;
	},
	lookAt: function ( vector ) {
		_obj.lookAt( vector );
		_obj.updateMatrix();
		this.applyMatrix4( _obj.matrix );
		return this;
	},
	center: function () {
		this.computeBoundingBox();
		this.boundingBox.getCenter( _offset ).negate();
		this.translate( _offset.x, _offset.y, _offset.z );
		return this;
	},
	setFromObject: function ( object ) {
		const geometry = object.geometry;
		if ( object.isPoints || object.isLine ) {
			const positions = new Float32BufferAttribute( geometry.vertices.length * 3, 3 );
			const colors = new Float32BufferAttribute( geometry.colors.length * 3, 3 );
			this.setAttribute( 'position', positions.copyVector3sArray( geometry.vertices ) );
			this.setAttribute( 'color', colors.copyColorsArray( geometry.colors ) );
			if ( geometry.lineDistances && geometry.lineDistances.length === geometry.vertices.length ) {
				const lineDistances = new Float32BufferAttribute( geometry.lineDistances.length, 1 );
				this.setAttribute( 'lineDistance', lineDistances.copyArray( geometry.lineDistances ) );
			}
			if ( geometry.boundingSphere !== null ) {
				this.boundingSphere = geometry.boundingSphere.clone();
			}
			if ( geometry.boundingBox !== null ) {
				this.boundingBox = geometry.boundingBox.clone();
			}
		} else if ( object.isMesh ) {
			if ( geometry && geometry.isGeometry ) {
				this.fromGeometry( geometry );
			}
		}
		return this;
	},
	setFromPoints: function ( points ) {
		const position = [];
		for ( let i = 0, l = points.length; i < l; i ++ ) {
			const point = points[ i ];
			position.push( point.x, point.y, point.z || 0 );
		}
		this.setAttribute( 'position', new Float32BufferAttribute( position, 3 ) );
		return this;
	},
	updateFromObject: function ( object ) {
		let geometry = object.geometry;
		if ( object.isMesh ) {
			let direct = geometry.__directGeometry;
			if ( geometry.elementsNeedUpdate === true ) {
				direct = undefined;
				geometry.elementsNeedUpdate = false;
			}
			if ( direct === undefined ) {
				return this.fromGeometry( geometry );
			}
			direct.verticesNeedUpdate = geometry.verticesNeedUpdate;
			direct.normalsNeedUpdate = geometry.normalsNeedUpdate;
			direct.colorsNeedUpdate = geometry.colorsNeedUpdate;
			direct.uvsNeedUpdate = geometry.uvsNeedUpdate;
			direct.groupsNeedUpdate = geometry.groupsNeedUpdate;
			geometry.verticesNeedUpdate = false;
			geometry.normalsNeedUpdate = false;
			geometry.colorsNeedUpdate = false;
			geometry.uvsNeedUpdate = false;
			geometry.groupsNeedUpdate = false;
			geometry = direct;
		}
		if ( geometry.verticesNeedUpdate === true ) {
			const attribute = this.attributes.position;
			if ( attribute !== undefined ) {
				attribute.copyVector3sArray( geometry.vertices );
				attribute.needsUpdate = true;
			}
			geometry.verticesNeedUpdate = false;
		}
		if ( geometry.normalsNeedUpdate === true ) {
			const attribute = this.attributes.normal;
			if ( attribute !== undefined ) {
				attribute.copyVector3sArray( geometry.normals );
				attribute.needsUpdate = true;
			}
			geometry.normalsNeedUpdate = false;
		}
		if ( geometry.colorsNeedUpdate === true ) {
			const attribute = this.attributes.color;
			if ( attribute !== undefined ) {
				attribute.copyColorsArray( geometry.colors );
				attribute.needsUpdate = true;
			}
			geometry.colorsNeedUpdate = false;
		}
		if ( geometry.uvsNeedUpdate ) {
			const attribute = this.attributes.uv;
			if ( attribute !== undefined ) {
				attribute.copyVector2sArray( geometry.uvs );
				attribute.needsUpdate = true;
			}
			geometry.uvsNeedUpdate = false;
		}
		if ( geometry.lineDistancesNeedUpdate ) {
			const attribute = this.attributes.lineDistance;
			if ( attribute !== undefined ) {
				attribute.copyArray( geometry.lineDistances );
				attribute.needsUpdate = true;
			}
			geometry.lineDistancesNeedUpdate = false;
		}
		if ( geometry.groupsNeedUpdate ) {
			geometry.computeGroups( object.geometry );
			this.groups = geometry.groups;
			geometry.groupsNeedUpdate = false;
		}
		return this;
	},
	fromGeometry: function ( geometry ) {
		geometry.__directGeometry = new DirectGeometry().fromGeometry( geometry );
		return this.fromDirectGeometry( geometry.__directGeometry );
	},
	fromDirectGeometry: function ( geometry ) {
		const positions = new Float32Array( geometry.vertices.length * 3 );
		this.setAttribute( 'position', new BufferAttribute( positions, 3 ).copyVector3sArray( geometry.vertices ) );
		if ( geometry.normals.length > 0 ) {
			const normals = new Float32Array( geometry.normals.length * 3 );
			this.setAttribute( 'normal', new BufferAttribute( normals, 3 ).copyVector3sArray( geometry.normals ) );
		}
		if ( geometry.colors.length > 0 ) {
			const colors = new Float32Array( geometry.colors.length * 3 );
			this.setAttribute( 'color', new BufferAttribute( colors, 3 ).copyColorsArray( geometry.colors ) );
		}
		if ( geometry.uvs.length > 0 ) {
			const uvs = new Float32Array( geometry.uvs.length * 2 );
			this.setAttribute( 'uv', new BufferAttribute( uvs, 2 ).copyVector2sArray( geometry.uvs ) );
		}
		if ( geometry.uvs2.length > 0 ) {
			const uvs2 = new Float32Array( geometry.uvs2.length * 2 );
			this.setAttribute( 'uv2', new BufferAttribute( uvs2, 2 ).copyVector2sArray( geometry.uvs2 ) );
		}
		this.groups = geometry.groups;
		for ( const name in geometry.morphTargets ) {
			const array = [];
			const morphTargets = geometry.morphTargets[ name ];
			for ( let i = 0, l = morphTargets.length; i < l; i ++ ) {
				const morphTarget = morphTargets[ i ];
				const attribute = new Float32BufferAttribute( morphTarget.data.length * 3, 3 );
				attribute.name = morphTarget.name;
				array.push( attribute.copyVector3sArray( morphTarget.data ) );
			}
			this.morphAttributes[ name ] = array;
		}
		if ( geometry.skinIndices.length > 0 ) {
			const skinIndices = new Float32BufferAttribute( geometry.skinIndices.length * 4, 4 );
			this.setAttribute( 'skinIndex', skinIndices.copyVector4sArray( geometry.skinIndices ) );
		}
		if ( geometry.skinWeights.length > 0 ) {
			const skinWeights = new Float32BufferAttribute( geometry.skinWeights.length * 4, 4 );
			this.setAttribute( 'skinWeight', skinWeights.copyVector4sArray( geometry.skinWeights ) );
		}
		if ( geometry.boundingSphere !== null ) {
			this.boundingSphere = geometry.boundingSphere.clone();
		}
		if ( geometry.boundingBox !== null ) {
			this.boundingBox = geometry.boundingBox.clone();
		}
		return this;
	},
	computeBoundingBox: function () {
		if ( this.boundingBox === null ) {
			this.boundingBox = new Box3();
		}
		const position = this.attributes.position;
		const morphAttributesPosition = this.morphAttributes.position;
		if ( position && position.isGLBufferAttribute ) {
			console.error( 'THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set "mesh.frustumCulled" to "false".', this );
			this.boundingBox.set(
				new Vector3( - Infinity, - Infinity, - Infinity ),
				new Vector3( + Infinity, + Infinity, + Infinity )
			);
			return;
		}
		if ( position !== undefined ) {
			this.boundingBox.setFromBufferAttribute( position );
			if ( morphAttributesPosition ) {
				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
					const morphAttribute = morphAttributesPosition[ i ];
					_box$2.setFromBufferAttribute( morphAttribute );
					if ( this.morphTargetsRelative ) {
						_vector$4.addVectors( this.boundingBox.min, _box$2.min );
						this.boundingBox.expandByPoint( _vector$4 );
						_vector$4.addVectors( this.boundingBox.max, _box$2.max );
						this.boundingBox.expandByPoint( _vector$4 );
					} else {
						this.boundingBox.expandByPoint( _box$2.min );
						this.boundingBox.expandByPoint( _box$2.max );
					}
				}
			}
		} else {
			this.boundingBox.makeEmpty();
		}
		if ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {
			console.error( 'THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this );
		}
	},
	computeBoundingSphere: function () {
		if ( this.boundingSphere === null ) {
			this.boundingSphere = new Sphere();
		}
		const position = this.attributes.position;
		const morphAttributesPosition = this.morphAttributes.position;
		if ( position && position.isGLBufferAttribute ) {
			console.error( 'THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set "mesh.frustumCulled" to "false".', this );
			this.boundingSphere.set( new Vector3(), Infinity );
			return;
		}
		if ( position ) {
			const center = this.boundingSphere.center;
			_box$2.setFromBufferAttribute( position );
			if ( morphAttributesPosition ) {
				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
					const morphAttribute = morphAttributesPosition[ i ];
					_boxMorphTargets.setFromBufferAttribute( morphAttribute );
					if ( this.morphTargetsRelative ) {
						_vector$4.addVectors( _box$2.min, _boxMorphTargets.min );
						_box$2.expandByPoint( _vector$4 );
						_vector$4.addVectors( _box$2.max, _boxMorphTargets.max );
						_box$2.expandByPoint( _vector$4 );
					} else {
						_box$2.expandByPoint( _boxMorphTargets.min );
						_box$2.expandByPoint( _boxMorphTargets.max );
					}
				}
			}
			_box$2.getCenter( center );
			let maxRadiusSq = 0;
			for ( let i = 0, il = position.count; i < il; i ++ ) {
				_vector$4.fromBufferAttribute( position, i );
				maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$4 ) );
			}
			if ( morphAttributesPosition ) {
				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
					const morphAttribute = morphAttributesPosition[ i ];
					const morphTargetsRelative = this.morphTargetsRelative;
					for ( let j = 0, jl = morphAttribute.count; j < jl; j ++ ) {
						_vector$4.fromBufferAttribute( morphAttribute, j );
						if ( morphTargetsRelative ) {
							_offset.fromBufferAttribute( position, j );
							_vector$4.add( _offset );
						}
						maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$4 ) );
					}
				}
			}
			this.boundingSphere.radius = Math.sqrt( maxRadiusSq );
			if ( isNaN( this.boundingSphere.radius ) ) {
				console.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this );
			}
		}
	},
	computeFaceNormals: function () {
	},
	computeVertexNormals: function () {
		const index = this.index;
		const positionAttribute = this.getAttribute( 'position' );
		if ( positionAttribute !== undefined ) {
			let normalAttribute = this.getAttribute( 'normal' );
			if ( normalAttribute === undefined ) {
				normalAttribute = new BufferAttribute( new Float32Array( positionAttribute.count * 3 ), 3 );
				this.setAttribute( 'normal', normalAttribute );
			} else {
				for ( let i = 0, il = normalAttribute.count; i < il; i ++ ) {
					normalAttribute.setXYZ( i, 0, 0, 0 );
				}
			}
			const pA = new Vector3(), pB = new Vector3(), pC = new Vector3();
			const nA = new Vector3(), nB = new Vector3(), nC = new Vector3();
			const cb = new Vector3(), ab = new Vector3();
			if ( index ) {
				for ( let i = 0, il = index.count; i < il; i += 3 ) {
					const vA = index.getX( i + 0 );
					const vB = index.getX( i + 1 );
					const vC = index.getX( i + 2 );
					pA.fromBufferAttribute( positionAttribute, vA );
					pB.fromBufferAttribute( positionAttribute, vB );
					pC.fromBufferAttribute( positionAttribute, vC );
					cb.subVectors( pC, pB );
					ab.subVectors( pA, pB );
					cb.cross( ab );
					nA.fromBufferAttribute( normalAttribute, vA );
					nB.fromBufferAttribute( normalAttribute, vB );
					nC.fromBufferAttribute( normalAttribute, vC );
					nA.add( cb );
					nB.add( cb );
					nC.add( cb );
					normalAttribute.setXYZ( vA, nA.x, nA.y, nA.z );
					normalAttribute.setXYZ( vB, nB.x, nB.y, nB.z );
					normalAttribute.setXYZ( vC, nC.x, nC.y, nC.z );
				}
			} else {
				for ( let i = 0, il = positionAttribute.count; i < il; i += 3 ) {
					pA.fromBufferAttribute( positionAttribute, i + 0 );
					pB.fromBufferAttribute( positionAttribute, i + 1 );
					pC.fromBufferAttribute( positionAttribute, i + 2 );
					cb.subVectors( pC, pB );
					ab.subVectors( pA, pB );
					cb.cross( ab );
					normalAttribute.setXYZ( i + 0, cb.x, cb.y, cb.z );
					normalAttribute.setXYZ( i + 1, cb.x, cb.y, cb.z );
					normalAttribute.setXYZ( i + 2, cb.x, cb.y, cb.z );
				}
			}
			this.normalizeNormals();
			normalAttribute.needsUpdate = true;
		}
	},
	merge: function ( geometry, offset ) {
		if ( ! ( geometry && geometry.isBufferGeometry ) ) {
			console.error( 'THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.', geometry );
			return;
		}
		if ( offset === undefined ) {
			offset = 0;
			console.warn(
				'THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. '
				+ 'Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge.'
			);
		}
		const attributes = this.attributes;
		for ( const key in attributes ) {
			if ( geometry.attributes[ key ] === undefined ) continue;
			const attribute1 = attributes[ key ];
			const attributeArray1 = attribute1.array;
			const attribute2 = geometry.attributes[ key ];
			const attributeArray2 = attribute2.array;
			const attributeOffset = attribute2.itemSize * offset;
			const length = Math.min( attributeArray2.length, attributeArray1.length - attributeOffset );
			for ( let i = 0, j = attributeOffset; i < length; i ++, j ++ ) {
				attributeArray1[ j ] = attributeArray2[ i ];
			}
		}
		return this;
	},
	normalizeNormals: function () {
		const normals = this.attributes.normal;
		for ( let i = 0, il = normals.count; i < il; i ++ ) {
			_vector$4.fromBufferAttribute( normals, i );
			_vector$4.normalize();
			normals.setXYZ( i, _vector$4.x, _vector$4.y, _vector$4.z );
		}
	},
	toNonIndexed: function () {
		function convertBufferAttribute( attribute, indices ) {
			const array = attribute.array;
			const itemSize = attribute.itemSize;
			const normalized = attribute.normalized;
			const array2 = new array.constructor( indices.length * itemSize );
			let index = 0, index2 = 0;
			for ( let i = 0, l = indices.length; i < l; i ++ ) {
				index = indices[ i ] * itemSize;
				for ( let j = 0; j < itemSize; j ++ ) {
					array2[ index2 ++ ] = array[ index ++ ];
				}
			}
			return new BufferAttribute( array2, itemSize, normalized );
		}
		if ( this.index === null ) {
			console.warn( 'THREE.BufferGeometry.toNonIndexed(): Geometry is already non-indexed.' );
			return this;
		}
		const geometry2 = new BufferGeometry();
		const indices = this.index.array;
		const attributes = this.attributes;
		for ( const name in attributes ) {
			const attribute = attributes[ name ];
			const newAttribute = convertBufferAttribute( attribute, indices );
			geometry2.setAttribute( name, newAttribute );
		}
		const morphAttributes = this.morphAttributes;
		for ( const name in morphAttributes ) {
			const morphArray = [];
			const morphAttribute = morphAttributes[ name ];
			for ( let i = 0, il = morphAttribute.length; i < il; i ++ ) {
				const attribute = morphAttribute[ i ];
				const newAttribute = convertBufferAttribute( attribute, indices );
				morphArray.push( newAttribute );
			}
			geometry2.morphAttributes[ name ] = morphArray;
		}
		geometry2.morphTargetsRelative = this.morphTargetsRelative;
		const groups = this.groups;
		for ( let i = 0, l = groups.length; i < l; i ++ ) {
			const group = groups[ i ];
			geometry2.addGroup( group.start, group.count, group.materialIndex );
		}
		return geometry2;
	},
	toJSON: function () {
		const data = {
			metadata: {
				version: 4.5,
				type: 'BufferGeometry',
				generator: 'BufferGeometry.toJSON'
			}
		};
		data.uuid = this.uuid;
		data.type = this.type;
		if ( this.name !== '' ) data.name = this.name;
		if ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;
		if ( this.parameters !== undefined ) {
			const parameters = this.parameters;
			for ( const key in parameters ) {
				if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];
			}
			return data;
		}
		data.data = { attributes: {} };
		const index = this.index;
		if ( index !== null ) {
			data.data.index = {
				type: index.array.constructor.name,
				array: Array.prototype.slice.call( index.array )
			};
		}
		const attributes = this.attributes;
		for ( const key in attributes ) {
			const attribute = attributes[ key ];
			const attributeData = attribute.toJSON( data.data );
			if ( attribute.name !== '' ) attributeData.name = attribute.name;
			data.data.attributes[ key ] = attributeData;
		}
		const morphAttributes = {};
		let hasMorphAttributes = false;
		for ( const key in this.morphAttributes ) {
			const attributeArray = this.morphAttributes[ key ];
			const array = [];
			for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {
				const attribute = attributeArray[ i ];
				const attributeData = attribute.toJSON( data.data );
				if ( attribute.name !== '' ) attributeData.name = attribute.name;
				array.push( attributeData );
			}
			if ( array.length > 0 ) {
				morphAttributes[ key ] = array;
				hasMorphAttributes = true;
			}
		}
		if ( hasMorphAttributes ) {
			data.data.morphAttributes = morphAttributes;
			data.data.morphTargetsRelative = this.morphTargetsRelative;
		}
		const groups = this.groups;
		if ( groups.length > 0 ) {
			data.data.groups = JSON.parse( JSON.stringify( groups ) );
		}
		const boundingSphere = this.boundingSphere;
		if ( boundingSphere !== null ) {
			data.data.boundingSphere = {
				center: boundingSphere.center.toArray(),
				radius: boundingSphere.radius
			};
		}
		return data;
	},
	clone: function () {
		return new BufferGeometry().copy( this );
	},
	copy: function ( source ) {
		this.index = null;
		this.attributes = {};
		this.morphAttributes = {};
		this.groups = [];
		this.boundingBox = null;
		this.boundingSphere = null;
		const data = {};
		this.name = source.name;
		const index = source.index;
		if ( index !== null ) {
			this.setIndex( index.clone( data ) );
		}
		const attributes = source.attributes;
		for ( const name in attributes ) {
			const attribute = attributes[ name ];
			this.setAttribute( name, attribute.clone( data ) );
		}
		const morphAttributes = source.morphAttributes;
		for ( const name in morphAttributes ) {
			const array = [];
			const morphAttribute = morphAttributes[ name ];
			for ( let i = 0, l = morphAttribute.length; i < l; i ++ ) {
				array.push( morphAttribute[ i ].clone( data ) );
			}
			this.morphAttributes[ name ] = array;
		}
		this.morphTargetsRelative = source.morphTargetsRelative;
		const groups = source.groups;
		for ( let i = 0, l = groups.length; i < l; i ++ ) {
			const group = groups[ i ];
			this.addGroup( group.start, group.count, group.materialIndex );
		}
		const boundingBox = source.boundingBox;
		if ( boundingBox !== null ) {
			this.boundingBox = boundingBox.clone();
		}
		const boundingSphere = source.boundingSphere;
		if ( boundingSphere !== null ) {
			this.boundingSphere = boundingSphere.clone();
		}
		this.drawRange.start = source.drawRange.start;
		this.drawRange.count = source.drawRange.count;
		this.userData = source.userData;
		return this;
	},
	dispose: function () {
		this.dispatchEvent( { type: 'dispose' } );
	}
} );
const _inverseMatrix = new Matrix4();
const _ray = new Ray();
const _sphere = new Sphere();
const _vA = new Vector3();
const _vB = new Vector3();
const _vC = new Vector3();
const _tempA = new Vector3();
const _tempB = new Vector3();
const _tempC = new Vector3();
const _morphA = new Vector3();
const _morphB = new Vector3();
const _morphC = new Vector3();
const _uvA = new Vector2();
const _uvB = new Vector2();
const _uvC = new Vector2();
const _intersectionPoint = new Vector3();
const _intersectionPointWorld = new Vector3();
function Mesh( geometry, material ) {
	Object3D.call( this );
	this.type = 'Mesh';
	this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
	this.material = material !== undefined ? material : new MeshBasicMaterial();
	this.updateMorphTargets();
}
Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
	constructor: Mesh,
	isMesh: true,
	copy: function ( source ) {
		Object3D.prototype.copy.call( this, source );
		if ( source.morphTargetInfluences !== undefined ) {
			this.morphTargetInfluences = source.morphTargetInfluences.slice();
		}
		if ( source.morphTargetDictionary !== undefined ) {
			this.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary );
		}
		this.material = source.material;
		this.geometry = source.geometry;
		return this;
	},
	updateMorphTargets: function () {
		const geometry = this.geometry;
		if ( geometry.isBufferGeometry ) {
			const morphAttributes = geometry.morphAttributes;
			const keys = Object.keys( morphAttributes );
			if ( keys.length > 0 ) {
				const morphAttribute = morphAttributes[ keys[ 0 ] ];
				if ( morphAttribute !== undefined ) {
					this.morphTargetInfluences = [];
					this.morphTargetDictionary = {};
					for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {
						const name = morphAttribute[ m ].name || String( m );
						this.morphTargetInfluences.push( 0 );
						this.morphTargetDictionary[ name ] = m;
					}
				}
			}
		} else {
			const morphTargets = geometry.morphTargets;
			if ( morphTargets !== undefined && morphTargets.length > 0 ) {
				console.error( 'THREE.Mesh.updateMorphTargets() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );
			}
		}
	},
	raycast: function ( raycaster, intersects ) {
		const geometry = this.geometry;
		const material = this.material;
		const matrixWorld = this.matrixWorld;
		if ( material === undefined ) return;
		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
		_sphere.copy( geometry.boundingSphere );
		_sphere.applyMatrix4( matrixWorld );
		if ( raycaster.ray.intersectsSphere( _sphere ) === false ) return;
		_inverseMatrix.getInverse( matrixWorld );
		_ray.copy( raycaster.ray ).applyMatrix4( _inverseMatrix );
		if ( geometry.boundingBox !== null ) {
			if ( _ray.intersectsBox( geometry.boundingBox ) === false ) return;
		}
		let intersection;
		if ( geometry.isBufferGeometry ) {
			const index = geometry.index;
			const position = geometry.attributes.position;
			const morphPosition = geometry.morphAttributes.position;
			const morphTargetsRelative = geometry.morphTargetsRelative;
			const uv = geometry.attributes.uv;
			const uv2 = geometry.attributes.uv2;
			const groups = geometry.groups;
			const drawRange = geometry.drawRange;
			if ( index !== null ) {
				if ( Array.isArray( material ) ) {
					for ( let i = 0, il = groups.length; i < il; i ++ ) {
						const group = groups[ i ];
						const groupMaterial = material[ group.materialIndex ];
						const start = Math.max( group.start, drawRange.start );
						const end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );
						for ( let j = start, jl = end; j < jl; j += 3 ) {
							const a = index.getX( j );
							const b = index.getX( j + 1 );
							const c = index.getX( j + 2 );
							intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );
							if ( intersection ) {
								intersection.faceIndex = Math.floor( j / 3 );
								intersection.face.materialIndex = group.materialIndex;
								intersects.push( intersection );
							}
						}
					}
				} else {
					const start = Math.max( 0, drawRange.start );
					const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );
					for ( let i = start, il = end; i < il; i += 3 ) {
						const a = index.getX( i );
						const b = index.getX( i + 1 );
						const c = index.getX( i + 2 );
						intersection = checkBufferGeometryIntersection( this, material, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );
						if ( intersection ) {
							intersection.faceIndex = Math.floor( i / 3 );
							intersects.push( intersection );
						}
					}
				}
			} else if ( position !== undefined ) {
				if ( Array.isArray( material ) ) {
					for ( let i = 0, il = groups.length; i < il; i ++ ) {
						const group = groups[ i ];
						const groupMaterial = material[ group.materialIndex ];
						const start = Math.max( group.start, drawRange.start );
						const end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );
						for ( let j = start, jl = end; j < jl; j += 3 ) {
							const a = j;
							const b = j + 1;
							const c = j + 2;
							intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );
							if ( intersection ) {
								intersection.faceIndex = Math.floor( j / 3 );
								intersection.face.materialIndex = group.materialIndex;
								intersects.push( intersection );
							}
						}
					}
				} else {
					const start = Math.max( 0, drawRange.start );
					const end = Math.min( position.count, ( drawRange.start + drawRange.count ) );
					for ( let i = start, il = end; i < il; i += 3 ) {
						const a = i;
						const b = i + 1;
						const c = i + 2;
						intersection = checkBufferGeometryIntersection( this, material, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );
						if ( intersection ) {
							intersection.faceIndex = Math.floor( i / 3 );
							intersects.push( intersection );
						}
					}
				}
			}
		} else if ( geometry.isGeometry ) {
			const isMultiMaterial = Array.isArray( material );
			const vertices = geometry.vertices;
			const faces = geometry.faces;
			let uvs;
			const faceVertexUvs = geometry.faceVertexUvs[ 0 ];
			if ( faceVertexUvs.length > 0 ) uvs = faceVertexUvs;
			for ( let f = 0, fl = faces.length; f < fl; f ++ ) {
				const face = faces[ f ];
				const faceMaterial = isMultiMaterial ? material[ face.materialIndex ] : material;
				if ( faceMaterial === undefined ) continue;
				const fvA = vertices[ face.a ];
				const fvB = vertices[ face.b ];
				const fvC = vertices[ face.c ];
				intersection = checkIntersection( this, faceMaterial, raycaster, _ray, fvA, fvB, fvC, _intersectionPoint );
				if ( intersection ) {
					if ( uvs && uvs[ f ] ) {
						const uvs_f = uvs[ f ];
						_uvA.copy( uvs_f[ 0 ] );
						_uvB.copy( uvs_f[ 1 ] );
						_uvC.copy( uvs_f[ 2 ] );
						intersection.uv = Triangle.getUV( _intersectionPoint, fvA, fvB, fvC, _uvA, _uvB, _uvC, new Vector2() );
					}
					intersection.face = face;
					intersection.faceIndex = f;
					intersects.push( intersection );
				}
			}
		}
	}
} );
function checkIntersection( object, material, raycaster, ray, pA, pB, pC, point ) {
	let intersect;
	if ( material.side === BackSide ) {
		intersect = ray.intersectTriangle( pC, pB, pA, true, point );
	} else {
		intersect = ray.intersectTriangle( pA, pB, pC, material.side !== DoubleSide, point );
	}
	if ( intersect === null ) return null;
	_intersectionPointWorld.copy( point );
	_intersectionPointWorld.applyMatrix4( object.matrixWorld );
	const distance = raycaster.ray.origin.distanceTo( _intersectionPointWorld );
	if ( distance < raycaster.near || distance > raycaster.far ) return null;
	return {
		distance: distance,
		point: _intersectionPointWorld.clone(),
		object: object
	};
}
function checkBufferGeometryIntersection( object, material, raycaster, ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c ) {
	_vA.fromBufferAttribute( position, a );
	_vB.fromBufferAttribute( position, b );
	_vC.fromBufferAttribute( position, c );
	const morphInfluences = object.morphTargetInfluences;
	if ( material.morphTargets && morphPosition && morphInfluences ) {
		_morphA.set( 0, 0, 0 );
		_morphB.set( 0, 0, 0 );
		_morphC.set( 0, 0, 0 );
		for ( let i = 0, il = morphPosition.length; i < il; i ++ ) {
			const influence = morphInfluences[ i ];
			const morphAttribute = morphPosition[ i ];
			if ( influence === 0 ) continue;
			_tempA.fromBufferAttribute( morphAttribute, a );
			_tempB.fromBufferAttribute( morphAttribute, b );
			_tempC.fromBufferAttribute( morphAttribute, c );
			if ( morphTargetsRelative ) {
				_morphA.addScaledVector( _tempA, influence );
				_morphB.addScaledVector( _tempB, influence );
				_morphC.addScaledVector( _tempC, influence );
			} else {
				_morphA.addScaledVector( _tempA.sub( _vA ), influence );
				_morphB.addScaledVector( _tempB.sub( _vB ), influence );
				_morphC.addScaledVector( _tempC.sub( _vC ), influence );
			}
		}
		_vA.add( _morphA );
		_vB.add( _morphB );
		_vC.add( _morphC );
	}
	if ( object.isSkinnedMesh ) {
		object.boneTransform( a, _vA );
		object.boneTransform( b, _vB );
		object.boneTransform( c, _vC );
	}
	const intersection = checkIntersection( object, material, raycaster, ray, _vA, _vB, _vC, _intersectionPoint );
	if ( intersection ) {
		if ( uv ) {
			_uvA.fromBufferAttribute( uv, a );
			_uvB.fromBufferAttribute( uv, b );
			_uvC.fromBufferAttribute( uv, c );
			intersection.uv = Triangle.getUV( _intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() );
		}
		if ( uv2 ) {
			_uvA.fromBufferAttribute( uv2, a );
			_uvB.fromBufferAttribute( uv2, b );
			_uvC.fromBufferAttribute( uv2, c );
			intersection.uv2 = Triangle.getUV( _intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() );
		}
		const face = new Face3( a, b, c );
		Triangle.getNormal( _vA, _vB, _vC, face.normal );
		intersection.face = face;
	}
	return intersection;
}
let _geometryId = 0;
const _m1$3 = new Matrix4();
const _obj$1 = new Object3D();
const _offset$1 = new Vector3();
function Geometry() {
	Object.defineProperty( this, 'id', { value: _geometryId += 2 } );
	this.uuid = MathUtils.generateUUID();
	this.name = '';
	this.type = 'Geometry';
	this.vertices = [];
	this.colors = [];
	this.faces = [];
	this.faceVertexUvs = [[]];
	this.morphTargets = [];
	this.morphNormals = [];
	this.skinWeights = [];
	this.skinIndices = [];
	this.lineDistances = [];
	this.boundingBox = null;
	this.boundingSphere = null;
	this.elementsNeedUpdate = false;
	this.verticesNeedUpdate = false;
	this.uvsNeedUpdate = false;
	this.normalsNeedUpdate = false;
	this.colorsNeedUpdate = false;
	this.lineDistancesNeedUpdate = false;
	this.groupsNeedUpdate = false;
}
Geometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
	constructor: Geometry,
	isGeometry: true,
	applyMatrix4: function ( matrix ) {
		const normalMatrix = new Matrix3().getNormalMatrix( matrix );
		for ( let i = 0, il = this.vertices.length; i < il; i ++ ) {
			const vertex = this.vertices[ i ];
			vertex.applyMatrix4( matrix );
		}
		for ( let i = 0, il = this.faces.length; i < il; i ++ ) {
			const face = this.faces[ i ];
			face.normal.applyMatrix3( normalMatrix ).normalize();
			for ( let j = 0, jl = face.vertexNormals.length; j < jl; j ++ ) {
				face.vertexNormals[ j ].applyMatrix3( normalMatrix ).normalize();
			}
		}
		if ( this.boundingBox !== null ) {
			this.computeBoundingBox();
		}
		if ( this.boundingSphere !== null ) {
			this.computeBoundingSphere();
		}
		this.verticesNeedUpdate = true;
		this.normalsNeedUpdate = true;
		return this;
	},
	rotateX: function ( angle ) {
		_m1$3.makeRotationX( angle );
		this.applyMatrix4( _m1$3 );
		return this;
	},
	rotateY: function ( angle ) {
		_m1$3.makeRotationY( angle );
		this.applyMatrix4( _m1$3 );
		return this;
	},
	rotateZ: function ( angle ) {
		_m1$3.makeRotationZ( angle );
		this.applyMatrix4( _m1$3 );
		return this;
	},
	translate: function ( x, y, z ) {
		_m1$3.makeTranslation( x, y, z );
		this.applyMatrix4( _m1$3 );
		return this;
	},
	scale: function ( x, y, z ) {
		_m1$3.makeScale( x, y, z );
		this.applyMatrix4( _m1$3 );
		return this;
	},
	lookAt: function ( vector ) {
		_obj$1.lookAt( vector );
		_obj$1.updateMatrix();
		this.applyMatrix4( _obj$1.matrix );
		return this;
	},
	fromBufferGeometry: function ( geometry ) {
		const scope = this;
		const index = geometry.index !== null ? geometry.index : undefined;
		const attributes = geometry.attributes;
		if ( attributes.position === undefined ) {
			console.error( 'THREE.Geometry.fromBufferGeometry(): Position attribute required for conversion.' );
			return this;
		}
		const position = attributes.position;
		const normal = attributes.normal;
		const color = attributes.color;
		const uv = attributes.uv;
		const uv2 = attributes.uv2;
		if ( uv2 !== undefined ) this.faceVertexUvs[ 1 ] = [];
		for ( let i = 0; i < position.count; i ++ ) {
			scope.vertices.push( new Vector3().fromBufferAttribute( position, i ) );
			if ( color !== undefined ) {
				scope.colors.push( new Color().fromBufferAttribute( color, i ) );
			}
		}
		function addFace( a, b, c, materialIndex ) {
			const vertexColors = ( color === undefined ) ? [] : [
				scope.colors[ a ].clone(),
				scope.colors[ b ].clone(),
				scope.colors[ c ].clone()
			];
			const vertexNormals = ( normal === undefined ) ? [] : [
				new Vector3().fromBufferAttribute( normal, a ),
				new Vector3().fromBufferAttribute( normal, b ),
				new Vector3().fromBufferAttribute( normal, c )
			];
			const face = new Face3( a, b, c, vertexNormals, vertexColors, materialIndex );
			scope.faces.push( face );
			if ( uv !== undefined ) {
				scope.faceVertexUvs[ 0 ].push( [
					new Vector2().fromBufferAttribute( uv, a ),
					new Vector2().fromBufferAttribute( uv, b ),
					new Vector2().fromBufferAttribute( uv, c )
				] );
			}
			if ( uv2 !== undefined ) {
				scope.faceVertexUvs[ 1 ].push( [
					new Vector2().fromBufferAttribute( uv2, a ),
					new Vector2().fromBufferAttribute( uv2, b ),
					new Vector2().fromBufferAttribute( uv2, c )
				] );
			}
		}
		const groups = geometry.groups;
		if ( groups.length > 0 ) {
			for ( let i = 0; i < groups.length; i ++ ) {
				const group = groups[ i ];
				const start = group.start;
				const count = group.count;
				for ( let j = start, jl = start + count; j < jl; j += 3 ) {
					if ( index !== undefined ) {
						addFace( index.getX( j ), index.getX( j + 1 ), index.getX( j + 2 ), group.materialIndex );
					} else {
						addFace( j, j + 1, j + 2, group.materialIndex );
					}
				}
			}
		} else {
			if ( index !== undefined ) {
				for ( let i = 0; i < index.count; i += 3 ) {
					addFace( index.getX( i ), index.getX( i + 1 ), index.getX( i + 2 ) );
				}
			} else {
				for ( let i = 0; i < position.count; i += 3 ) {
					addFace( i, i + 1, i + 2 );
				}
			}
		}
		this.computeFaceNormals();
		if ( geometry.boundingBox !== null ) {
			this.boundingBox = geometry.boundingBox.clone();
		}
		if ( geometry.boundingSphere !== null ) {
			this.boundingSphere = geometry.boundingSphere.clone();
		}
		return this;
	},
	center: function () {
		this.computeBoundingBox();
		this.boundingBox.getCenter( _offset$1 ).negate();
		this.translate( _offset$1.x, _offset$1.y, _offset$1.z );
		return this;
	},
	normalize: function () {
		this.computeBoundingSphere();
		const center = this.boundingSphere.center;
		const radius = this.boundingSphere.radius;
		const s = radius === 0 ? 1 : 1.0 / radius;
		const matrix = new Matrix4();
		matrix.set(
			s, 0, 0, - s * center.x,
			0, s, 0, - s * center.y,
			0, 0, s, - s * center.z,
			0, 0, 0, 1
		);
		this.applyMatrix4( matrix );
		return this;
	},
	computeFaceNormals: function () {
		const cb = new Vector3(), ab = new Vector3();
		for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
			const face = this.faces[ f ];
			const vA = this.vertices[ face.a ];
			const vB = this.vertices[ face.b ];
			const vC = this.vertices[ face.c ];
			cb.subVectors( vC, vB );
			ab.subVectors( vA, vB );
			cb.cross( ab );
			cb.normalize();
			face.normal.copy( cb );
		}
	},
	computeVertexNormals: function ( areaWeighted ) {
		if ( areaWeighted === undefined ) areaWeighted = true;
		const vertices = new Array( this.vertices.length );
		for ( let v = 0, vl = this.vertices.length; v < vl; v ++ ) {
			vertices[ v ] = new Vector3();
		}
		if ( areaWeighted ) {
			const cb = new Vector3(), ab = new Vector3();
			for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
				const face = this.faces[ f ];
				const vA = this.vertices[ face.a ];
				const vB = this.vertices[ face.b ];
				const vC = this.vertices[ face.c ];
				cb.subVectors( vC, vB );
				ab.subVectors( vA, vB );
				cb.cross( ab );
				vertices[ face.a ].add( cb );
				vertices[ face.b ].add( cb );
				vertices[ face.c ].add( cb );
			}
		} else {
			this.computeFaceNormals();
			for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
				const face = this.faces[ f ];
				vertices[ face.a ].add( face.normal );
				vertices[ face.b ].add( face.normal );
				vertices[ face.c ].add( face.normal );
			}
		}
		for ( let v = 0, vl = this.vertices.length; v < vl; v ++ ) {
			vertices[ v ].normalize();
		}
		for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
			const face = this.faces[ f ];
			const vertexNormals = face.vertexNormals;
			if ( vertexNormals.length === 3 ) {
				vertexNormals[ 0 ].copy( vertices[ face.a ] );
				vertexNormals[ 1 ].copy( vertices[ face.b ] );
				vertexNormals[ 2 ].copy( vertices[ face.c ] );
			} else {
				vertexNormals[ 0 ] = vertices[ face.a ].clone();
				vertexNormals[ 1 ] = vertices[ face.b ].clone();
				vertexNormals[ 2 ] = vertices[ face.c ].clone();
			}
		}
		if ( this.faces.length > 0 ) {
			this.normalsNeedUpdate = true;
		}
	},
	computeFlatVertexNormals: function () {
		this.computeFaceNormals();
		for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
			const face = this.faces[ f ];
			const vertexNormals = face.vertexNormals;
			if ( vertexNormals.length === 3 ) {
				vertexNormals[ 0 ].copy( face.normal );
				vertexNormals[ 1 ].copy( face.normal );
				vertexNormals[ 2 ].copy( face.normal );
			} else {
				vertexNormals[ 0 ] = face.normal.clone();
				vertexNormals[ 1 ] = face.normal.clone();
				vertexNormals[ 2 ] = face.normal.clone();
			}
		}
		if ( this.faces.length > 0 ) {
			this.normalsNeedUpdate = true;
		}
	},
	computeMorphNormals: function () {
		for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
			const face = this.faces[ f ];
			if ( ! face.__originalFaceNormal ) {
				face.__originalFaceNormal = face.normal.clone();
			} else {
				face.__originalFaceNormal.copy( face.normal );
			}
			if ( ! face.__originalVertexNormals ) face.__originalVertexNormals = [];
			for ( let i = 0, il = face.vertexNormals.length; i < il; i ++ ) {
				if ( ! face.__originalVertexNormals[ i ] ) {
					face.__originalVertexNormals[ i ] = face.vertexNormals[ i ].clone();
				} else {
					face.__originalVertexNormals[ i ].copy( face.vertexNormals[ i ] );
				}
			}
		}
		const tmpGeo = new Geometry();
		tmpGeo.faces = this.faces;
		for ( let i = 0, il = this.morphTargets.length; i < il; i ++ ) {
			if ( ! this.morphNormals[ i ] ) {
				this.morphNormals[ i ] = {};
				this.morphNormals[ i ].faceNormals = [];
				this.morphNormals[ i ].vertexNormals = [];
				const dstNormalsFace = this.morphNormals[ i ].faceNormals;
				const dstNormalsVertex = this.morphNormals[ i ].vertexNormals;
				for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
					const faceNormal = new Vector3();
					const vertexNormals = { a: new Vector3(), b: new Vector3(), c: new Vector3() };
					dstNormalsFace.push( faceNormal );
					dstNormalsVertex.push( vertexNormals );
				}
			}
			const morphNormals = this.morphNormals[ i ];
			tmpGeo.vertices = this.morphTargets[ i ].vertices;
			tmpGeo.computeFaceNormals();
			tmpGeo.computeVertexNormals();
			for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
				const face = this.faces[ f ];
				const faceNormal = morphNormals.faceNormals[ f ];
				const vertexNormals = morphNormals.vertexNormals[ f ];
				faceNormal.copy( face.normal );
				vertexNormals.a.copy( face.vertexNormals[ 0 ] );
				vertexNormals.b.copy( face.vertexNormals[ 1 ] );
				vertexNormals.c.copy( face.vertexNormals[ 2 ] );
			}
		}
		for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
			const face = this.faces[ f ];
			face.normal = face.__originalFaceNormal;
			face.vertexNormals = face.__originalVertexNormals;
		}
	},
	computeBoundingBox: function () {
		if ( this.boundingBox === null ) {
			this.boundingBox = new Box3();
		}
		this.boundingBox.setFromPoints( this.vertices );
	},
	computeBoundingSphere: function () {
		if ( this.boundingSphere === null ) {
			this.boundingSphere = new Sphere();
		}
		this.boundingSphere.setFromPoints( this.vertices );
	},
	merge: function ( geometry, matrix, materialIndexOffset ) {
		if ( ! ( geometry && geometry.isGeometry ) ) {
			console.error( 'THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.', geometry );
			return;
		}
		let normalMatrix;
		const vertexOffset = this.vertices.length,
			vertices1 = this.vertices,
			vertices2 = geometry.vertices,
			faces1 = this.faces,
			faces2 = geometry.faces,
			colors1 = this.colors,
			colors2 = geometry.colors;
		if ( materialIndexOffset === undefined ) materialIndexOffset = 0;
		if ( matrix !== undefined ) {
			normalMatrix = new Matrix3().getNormalMatrix( matrix );
		}
		for ( let i = 0, il = vertices2.length; i < il; i ++ ) {
			const vertex = vertices2[ i ];
			const vertexCopy = vertex.clone();
			if ( matrix !== undefined ) vertexCopy.applyMatrix4( matrix );
			vertices1.push( vertexCopy );
		}
		for ( let i = 0, il = colors2.length; i < il; i ++ ) {
			colors1.push( colors2[ i ].clone() );
		}
		for ( let i = 0, il = faces2.length; i < il; i ++ ) {
			const face = faces2[ i ];
			let normal, color;
			const faceVertexNormals = face.vertexNormals,
				faceVertexColors = face.vertexColors;
			const faceCopy = new Face3( face.a + vertexOffset, face.b + vertexOffset, face.c + vertexOffset );
			faceCopy.normal.copy( face.normal );
			if ( normalMatrix !== undefined ) {
				faceCopy.normal.applyMatrix3( normalMatrix ).normalize();
			}
			for ( let j = 0, jl = faceVertexNormals.length; j < jl; j ++ ) {
				normal = faceVertexNormals[ j ].clone();
				if ( normalMatrix !== undefined ) {
					normal.applyMatrix3( normalMatrix ).normalize();
				}
				faceCopy.vertexNormals.push( normal );
			}
			faceCopy.color.copy( face.color );
			for ( let j = 0, jl = faceVertexColors.length; j < jl; j ++ ) {
				color = faceVertexColors[ j ];
				faceCopy.vertexColors.push( color.clone() );
			}
			faceCopy.materialIndex = face.materialIndex + materialIndexOffset;
			faces1.push( faceCopy );
		}
		for ( let i = 0, il = geometry.faceVertexUvs.length; i < il; i ++ ) {
			const faceVertexUvs2 = geometry.faceVertexUvs[ i ];
			if ( this.faceVertexUvs[ i ] === undefined ) this.faceVertexUvs[ i ] = [];
			for ( let j = 0, jl = faceVertexUvs2.length; j < jl; j ++ ) {
				const uvs2 = faceVertexUvs2[ j ], uvsCopy = [];
				for ( let k = 0, kl = uvs2.length; k < kl; k ++ ) {
					uvsCopy.push( uvs2[ k ].clone() );
				}
				this.faceVertexUvs[ i ].push( uvsCopy );
			}
		}
	},
	mergeMesh: function ( mesh ) {
		if ( ! ( mesh && mesh.isMesh ) ) {
			console.error( 'THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.', mesh );
			return;
		}
		if ( mesh.matrixAutoUpdate ) mesh.updateMatrix();
		this.merge( mesh.geometry, mesh.matrix );
	},
	mergeVertices: function () {
		const verticesMap = {};
		const unique = [], changes = [];
		const precisionPoints = 4;
		const precision = Math.pow( 10, precisionPoints );
		for ( let i = 0, il = this.vertices.length; i < il; i ++ ) {
			const v = this.vertices[ i ];
			const key = Math.round( v.x * precision ) + '_' + Math.round( v.y * precision ) + '_' + Math.round( v.z * precision );
			if ( verticesMap[ key ] === undefined ) {
				verticesMap[ key ] = i;
				unique.push( this.vertices[ i ] );
				changes[ i ] = unique.length - 1;
			} else {
				changes[ i ] = changes[ verticesMap[ key ] ];
			}
		}
		const faceIndicesToRemove = [];
		for ( let i = 0, il = this.faces.length; i < il; i ++ ) {
			const face = this.faces[ i ];
			face.a = changes[ face.a ];
			face.b = changes[ face.b ];
			face.c = changes[ face.c ];
			const indices = [ face.a, face.b, face.c ];
			for ( let n = 0; n < 3; n ++ ) {
				if ( indices[ n ] === indices[ ( n + 1 ) % 3 ] ) {
					faceIndicesToRemove.push( i );
					break;
				}
			}
		}
		for ( let i = faceIndicesToRemove.length - 1; i >= 0; i -- ) {
			const idx = faceIndicesToRemove[ i ];
			this.faces.splice( idx, 1 );
			for ( let j = 0, jl = this.faceVertexUvs.length; j < jl; j ++ ) {
				this.faceVertexUvs[ j ].splice( idx, 1 );
			}
		}
		const diff = this.vertices.length - unique.length;
		this.vertices = unique;
		return diff;
	},
	setFromPoints: function ( points ) {
		this.vertices = [];
		for ( let i = 0, l = points.length; i < l; i ++ ) {
			const point = points[ i ];
			this.vertices.push( new Vector3( point.x, point.y, point.z || 0 ) );
		}
		return this;
	},
	sortFacesByMaterialIndex: function () {
		const faces = this.faces;
		const length = faces.length;
		for ( let i = 0; i < length; i ++ ) {
			faces[ i ]._id = i;
		}
		function materialIndexSort( a, b ) {
			return a.materialIndex - b.materialIndex;
		}
		faces.sort( materialIndexSort );
		const uvs1 = this.faceVertexUvs[ 0 ];
		const uvs2 = this.faceVertexUvs[ 1 ];
		let newUvs1, newUvs2;
		if ( uvs1 && uvs1.length === length ) newUvs1 = [];
		if ( uvs2 && uvs2.length === length ) newUvs2 = [];
		for ( let i = 0; i < length; i ++ ) {
			const id = faces[ i ]._id;
			if ( newUvs1 ) newUvs1.push( uvs1[ id ] );
			if ( newUvs2 ) newUvs2.push( uvs2[ id ] );
		}
		if ( newUvs1 ) this.faceVertexUvs[ 0 ] = newUvs1;
		if ( newUvs2 ) this.faceVertexUvs[ 1 ] = newUvs2;
	},
	toJSON: function () {
		const data = {
			metadata: {
				version: 4.5,
				type: 'Geometry',
				generator: 'Geometry.toJSON'
			}
		};
		data.uuid = this.uuid;
		data.type = this.type;
		if ( this.name !== '' ) data.name = this.name;
		if ( this.parameters !== undefined ) {
			const parameters = this.parameters;
			for ( const key in parameters ) {
				if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];
			}
			return data;
		}
		const vertices = [];
		for ( let i = 0; i < this.vertices.length; i ++ ) {
			const vertex = this.vertices[ i ];
			vertices.push( vertex.x, vertex.y, vertex.z );
		}
		const faces = [];
		const normals = [];
		const normalsHash = {};
		const colors = [];
		const colorsHash = {};
		const uvs = [];
		const uvsHash = {};
		for ( let i = 0; i < this.faces.length; i ++ ) {
			const face = this.faces[ i ];
			const hasMaterial = true;
			const hasFaceUv = false;
			const hasFaceVertexUv = this.faceVertexUvs[ 0 ][ i ] !== undefined;
			const hasFaceNormal = face.normal.length() > 0;
			const hasFaceVertexNormal = face.vertexNormals.length > 0;
			const hasFaceColor = face.color.r !== 1 || face.color.g !== 1 || face.color.b !== 1;
			const hasFaceVertexColor = face.vertexColors.length > 0;
			let faceType = 0;
			faceType = setBit( faceType, 0, 0 );
			faceType = setBit( faceType, 1, hasMaterial );
			faceType = setBit( faceType, 2, hasFaceUv );
			faceType = setBit( faceType, 3, hasFaceVertexUv );
			faceType = setBit( faceType, 4, hasFaceNormal );
			faceType = setBit( faceType, 5, hasFaceVertexNormal );
			faceType = setBit( faceType, 6, hasFaceColor );
			faceType = setBit( faceType, 7, hasFaceVertexColor );
			faces.push( faceType );
			faces.push( face.a, face.b, face.c );
			faces.push( face.materialIndex );
			if ( hasFaceVertexUv ) {
				const faceVertexUvs = this.faceVertexUvs[ 0 ][ i ];
				faces.push(
					getUvIndex( faceVertexUvs[ 0 ] ),
					getUvIndex( faceVertexUvs[ 1 ] ),
					getUvIndex( faceVertexUvs[ 2 ] )
				);
			}
			if ( hasFaceNormal ) {
				faces.push( getNormalIndex( face.normal ) );
			}
			if ( hasFaceVertexNormal ) {
				const vertexNormals = face.vertexNormals;
				faces.push(
					getNormalIndex( vertexNormals[ 0 ] ),
					getNormalIndex( vertexNormals[ 1 ] ),
					getNormalIndex( vertexNormals[ 2 ] )
				);
			}
			if ( hasFaceColor ) {
				faces.push( getColorIndex( face.color ) );
			}
			if ( hasFaceVertexColor ) {
				const vertexColors = face.vertexColors;
				faces.push(
					getColorIndex( vertexColors[ 0 ] ),
					getColorIndex( vertexColors[ 1 ] ),
					getColorIndex( vertexColors[ 2 ] )
				);
			}
		}
		function setBit( value, position, enabled ) {
			return enabled ? value | ( 1 << position ) : value & ( ~ ( 1 << position ) );
		}
		function getNormalIndex( normal ) {
			const hash = normal.x.toString() + normal.y.toString() + normal.z.toString();
			if ( normalsHash[ hash ] !== undefined ) {
				return normalsHash[ hash ];
			}
			normalsHash[ hash ] = normals.length / 3;
			normals.push( normal.x, normal.y, normal.z );
			return normalsHash[ hash ];
		}
		function getColorIndex( color ) {
			const hash = color.r.toString() + color.g.toString() + color.b.toString();
			if ( colorsHash[ hash ] !== undefined ) {
				return colorsHash[ hash ];
			}
			colorsHash[ hash ] = colors.length;
			colors.push( color.getHex() );
			return colorsHash[ hash ];
		}
		function getUvIndex( uv ) {
			const hash = uv.x.toString() + uv.y.toString();
			if ( uvsHash[ hash ] !== undefined ) {
				return uvsHash[ hash ];
			}
			uvsHash[ hash ] = uvs.length / 2;
			uvs.push( uv.x, uv.y );
			return uvsHash[ hash ];
		}
		data.data = {};
		data.data.vertices = vertices;
		data.data.normals = normals;
		if ( colors.length > 0 ) data.data.colors = colors;
		if ( uvs.length > 0 ) data.data.uvs = [ uvs ];
		data.data.faces = faces;
		return data;
	},
	clone: function () {
		return new Geometry().copy( this );
	},
	copy: function ( source ) {
		this.vertices = [];
		this.colors = [];
		this.faces = [];
		this.faceVertexUvs = [[]];
		this.morphTargets = [];
		this.morphNormals = [];
		this.skinWeights = [];
		this.skinIndices = [];
		this.lineDistances = [];
		this.boundingBox = null;
		this.boundingSphere = null;
		this.name = source.name;
		const vertices = source.vertices;
		for ( let i = 0, il = vertices.length; i < il; i ++ ) {
			this.vertices.push( vertices[ i ].clone() );
		}
		const colors = source.colors;
		for ( let i = 0, il = colors.length; i < il; i ++ ) {
			this.colors.push( colors[ i ].clone() );
		}
		const faces = source.faces;
		for ( let i = 0, il = faces.length; i < il; i ++ ) {
			this.faces.push( faces[ i ].clone() );
		}
		for ( let i = 0, il = source.faceVertexUvs.length; i < il; i ++ ) {
			const faceVertexUvs = source.faceVertexUvs[ i ];
			if ( this.faceVertexUvs[ i ] === undefined ) {
				this.faceVertexUvs[ i ] = [];
			}
			for ( let j = 0, jl = faceVertexUvs.length; j < jl; j ++ ) {
				const uvs = faceVertexUvs[ j ], uvsCopy = [];
				for ( let k = 0, kl = uvs.length; k < kl; k ++ ) {
					const uv = uvs[ k ];
					uvsCopy.push( uv.clone() );
				}
				this.faceVertexUvs[ i ].push( uvsCopy );
			}
		}
		const morphTargets = source.morphTargets;
		for ( let i = 0, il = morphTargets.length; i < il; i ++ ) {
			const morphTarget = {};
			morphTarget.name = morphTargets[ i ].name;
			if ( morphTargets[ i ].vertices !== undefined ) {
				morphTarget.vertices = [];
				for ( let j = 0, jl = morphTargets[ i ].vertices.length; j < jl; j ++ ) {
					morphTarget.vertices.push( morphTargets[ i ].vertices[ j ].clone() );
				}
			}
			if ( morphTargets[ i ].normals !== undefined ) {
				morphTarget.normals = [];
				for ( let j = 0, jl = morphTargets[ i ].normals.length; j < jl; j ++ ) {
					morphTarget.normals.push( morphTargets[ i ].normals[ j ].clone() );
				}
			}
			this.morphTargets.push( morphTarget );
		}
		const morphNormals = source.morphNormals;
		for ( let i = 0, il = morphNormals.length; i < il; i ++ ) {
			const morphNormal = {};
			if ( morphNormals[ i ].vertexNormals !== undefined ) {
				morphNormal.vertexNormals = [];
				for ( let j = 0, jl = morphNormals[ i ].vertexNormals.length; j < jl; j ++ ) {
					const srcVertexNormal = morphNormals[ i ].vertexNormals[ j ];
					const destVertexNormal = {};
					destVertexNormal.a = srcVertexNormal.a.clone();
					destVertexNormal.b = srcVertexNormal.b.clone();
					destVertexNormal.c = srcVertexNormal.c.clone();
					morphNormal.vertexNormals.push( destVertexNormal );
				}
			}
			if ( morphNormals[ i ].faceNormals !== undefined ) {
				morphNormal.faceNormals = [];
				for ( let j = 0, jl = morphNormals[ i ].faceNormals.length; j < jl; j ++ ) {
					morphNormal.faceNormals.push( morphNormals[ i ].faceNormals[ j ].clone() );
				}
			}
			this.morphNormals.push( morphNormal );
		}
		const skinWeights = source.skinWeights;
		for ( let i = 0, il = skinWeights.length; i < il; i ++ ) {
			this.skinWeights.push( skinWeights[ i ].clone() );
		}
		const skinIndices = source.skinIndices;
		for ( let i = 0, il = skinIndices.length; i < il; i ++ ) {
			this.skinIndices.push( skinIndices[ i ].clone() );
		}
		const lineDistances = source.lineDistances;
		for ( let i = 0, il = lineDistances.length; i < il; i ++ ) {
			this.lineDistances.push( lineDistances[ i ] );
		}
		const boundingBox = source.boundingBox;
		if ( boundingBox !== null ) {
			this.boundingBox = boundingBox.clone();
		}
		const boundingSphere = source.boundingSphere;
		if ( boundingSphere !== null ) {
			this.boundingSphere = boundingSphere.clone();
		}
		this.elementsNeedUpdate = source.elementsNeedUpdate;
		this.verticesNeedUpdate = source.verticesNeedUpdate;
		this.uvsNeedUpdate = source.uvsNeedUpdate;
		this.normalsNeedUpdate = source.normalsNeedUpdate;
		this.colorsNeedUpdate = source.colorsNeedUpdate;
		this.lineDistancesNeedUpdate = source.lineDistancesNeedUpdate;
		this.groupsNeedUpdate = source.groupsNeedUpdate;
		return this;
	},
	dispose: function () {
		this.dispatchEvent( { type: 'dispose' } );
	}
} );
class BoxGeometry extends Geometry {
	constructor( width, height, depth, widthSegments, heightSegments, depthSegments ) {
		super();
		this.type = 'BoxGeometry';
		this.parameters = {
			width: width,
			height: height,
			depth: depth,
			widthSegments: widthSegments,
			heightSegments: heightSegments,
			depthSegments: depthSegments
		};
		this.fromBufferGeometry( new BoxBufferGeometry( width, height, depth, widthSegments, heightSegments, depthSegments ) );
		this.mergeVertices();
	}
}
class BoxBufferGeometry extends BufferGeometry {
	constructor( width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1 ) {
		super();
		this.type = 'BoxBufferGeometry';
		this.parameters = {
			width: width,
			height: height,
			depth: depth,
			widthSegments: widthSegments,
			heightSegments: heightSegments,
			depthSegments: depthSegments
		};
		const scope = this;
		widthSegments = Math.floor( widthSegments );
		heightSegments = Math.floor( heightSegments );
		depthSegments = Math.floor( depthSegments );
		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];
		let numberOfVertices = 0;
		let groupStart = 0;
		buildPlane( 'z', 'y', 'x', - 1, - 1, depth, height, width, depthSegments, heightSegments, 0 );
		buildPlane( 'z', 'y', 'x', 1, - 1, depth, height, - width, depthSegments, heightSegments, 1 );
		buildPlane( 'x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2 );
		buildPlane( 'x', 'z', 'y', 1, - 1, width, depth, - height, widthSegments, depthSegments, 3 );
		buildPlane( 'x', 'y', 'z', 1, - 1, width, height, depth, widthSegments, heightSegments, 4 );
		buildPlane( 'x', 'y', 'z', - 1, - 1, width, height, - depth, widthSegments, heightSegments, 5 );
		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
		function buildPlane( u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex ) {
			const segmentWidth = width / gridX;
			const segmentHeight = height / gridY;
			const widthHalf = width / 2;
			const heightHalf = height / 2;
			const depthHalf = depth / 2;
			const gridX1 = gridX + 1;
			const gridY1 = gridY + 1;
			let vertexCounter = 0;
			let groupCount = 0;
			const vector = new Vector3();
			for ( let iy = 0; iy < gridY1; iy ++ ) {
				const y = iy * segmentHeight - heightHalf;
				for ( let ix = 0; ix < gridX1; ix ++ ) {
					const x = ix * segmentWidth - widthHalf;
					vector[ u ] = x * udir;
					vector[ v ] = y * vdir;
					vector[ w ] = depthHalf;
					vertices.push( vector.x, vector.y, vector.z );
					vector[ u ] = 0;
					vector[ v ] = 0;
					vector[ w ] = depth > 0 ? 1 : - 1;
					normals.push( vector.x, vector.y, vector.z );
					uvs.push( ix / gridX );
					uvs.push( 1 - ( iy / gridY ) );
					vertexCounter += 1;
				}
			}
			for ( let iy = 0; iy < gridY; iy ++ ) {
				for ( let ix = 0; ix < gridX; ix ++ ) {
					const a = numberOfVertices + ix + gridX1 * iy;
					const b = numberOfVertices + ix + gridX1 * ( iy + 1 );
					const c = numberOfVertices + ( ix + 1 ) + gridX1 * ( iy + 1 );
					const d = numberOfVertices + ( ix + 1 ) + gridX1 * iy;
					indices.push( a, b, d );
					indices.push( b, c, d );
					groupCount += 6;
				}
			}
			scope.addGroup( groupStart, groupCount, materialIndex );
			groupStart += groupCount;
			numberOfVertices += vertexCounter;
		}
	}
}
function cloneUniforms( src ) {
	const dst = {};
	for ( const u in src ) {
		dst[ u ] = {};
		for ( const p in src[ u ] ) {
			const property = src[ u ][ p ];
			if ( property && ( property.isColor ||
				property.isMatrix3 || property.isMatrix4 ||
				property.isVector2 || property.isVector3 || property.isVector4 ||
				property.isTexture ) ) {
				dst[ u ][ p ] = property.clone();
			} else if ( Array.isArray( property ) ) {
				dst[ u ][ p ] = property.slice();
			} else {
				dst[ u ][ p ] = property;
			}
		}
	}
	return dst;
}
function mergeUniforms( uniforms ) {
	const merged = {};
	for ( let u = 0; u < uniforms.length; u ++ ) {
		const tmp = cloneUniforms( uniforms[ u ] );
		for ( const p in tmp ) {
			merged[ p ] = tmp[ p ];
		}
	}
	return merged;
}
const UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };
var default_vertex = "void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}";
var default_fragment = "void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}";
function ShaderMaterial( parameters ) {
	Material.call( this );
	this.type = 'ShaderMaterial';
	this.defines = {};
	this.uniforms = {};
	this.vertexShader = default_vertex;
	this.fragmentShader = default_fragment;
	this.linewidth = 1;
	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.fog = false;
	this.lights = false;
	this.clipping = false;
	this.skinning = false;
	this.morphTargets = false;
	this.morphNormals = false;
	this.extensions = {
		derivatives: false,
		fragDepth: false,
		drawBuffers: false,
		shaderTextureLOD: false
	};
	this.defaultAttributeValues = {
		'color': [ 1, 1, 1 ],
		'uv': [ 0, 0 ],
		'uv2': [ 0, 0 ]
	};
	this.index0AttributeName = undefined;
	this.uniformsNeedUpdate = false;
	this.glslVersion = null;
	if ( parameters !== undefined ) {
		if ( parameters.attributes !== undefined ) {
			console.error( 'THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead.' );
		}
		this.setValues( parameters );
	}
}
ShaderMaterial.prototype = Object.create( Material.prototype );
ShaderMaterial.prototype.constructor = ShaderMaterial;
ShaderMaterial.prototype.isShaderMaterial = true;
ShaderMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.fragmentShader = source.fragmentShader;
	this.vertexShader = source.vertexShader;
	this.uniforms = cloneUniforms( source.uniforms );
	this.defines = Object.assign( {}, source.defines );
	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	this.lights = source.lights;
	this.clipping = source.clipping;
	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.morphNormals = source.morphNormals;
	this.extensions = Object.assign( {}, source.extensions );
	this.glslVersion = source.glslVersion;
	return this;
};
ShaderMaterial.prototype.toJSON = function ( meta ) {
	const data = Material.prototype.toJSON.call( this, meta );
	data.glslVersion = this.glslVersion;
	data.uniforms = {};
	for ( const name in this.uniforms ) {
		const uniform = this.uniforms[ name ];
		const value = uniform.value;
		if ( value && value.isTexture ) {
			data.uniforms[ name ] = {
				type: 't',
				value: value.toJSON( meta ).uuid
			};
		} else if ( value && value.isColor ) {
			data.uniforms[ name ] = {
				type: 'c',
				value: value.getHex()
			};
		} else if ( value && value.isVector2 ) {
			data.uniforms[ name ] = {
				type: 'v2',
				value: value.toArray()
			};
		} else if ( value && value.isVector3 ) {
			data.uniforms[ name ] = {
				type: 'v3',
				value: value.toArray()
			};
		} else if ( value && value.isVector4 ) {
			data.uniforms[ name ] = {
				type: 'v4',
				value: value.toArray()
			};
		} else if ( value && value.isMatrix3 ) {
			data.uniforms[ name ] = {
				type: 'm3',
				value: value.toArray()
			};
		} else if ( value && value.isMatrix4 ) {
			data.uniforms[ name ] = {
				type: 'm4',
				value: value.toArray()
			};
		} else {
			data.uniforms[ name ] = {
				value: value
			};
		}
	}
	if ( Object.keys( this.defines ).length > 0 ) data.defines = this.defines;
	data.vertexShader = this.vertexShader;
	data.fragmentShader = this.fragmentShader;
	const extensions = {};
	for ( const key in this.extensions ) {
		if ( this.extensions[ key ] === true ) extensions[ key ] = true;
	}
	if ( Object.keys( extensions ).length > 0 ) data.extensions = extensions;
	return data;
};
function Camera() {
	Object3D.call( this );
	this.type = 'Camera';
	this.matrixWorldInverse = new Matrix4();
	this.projectionMatrix = new Matrix4();
	this.projectionMatrixInverse = new Matrix4();
}
Camera.prototype = Object.assign( Object.create( Object3D.prototype ), {
	constructor: Camera,
	isCamera: true,
	copy: function ( source, recursive ) {
		Object3D.prototype.copy.call( this, source, recursive );
		this.matrixWorldInverse.copy( source.matrixWorldInverse );
		this.projectionMatrix.copy( source.projectionMatrix );
		this.projectionMatrixInverse.copy( source.projectionMatrixInverse );
		return this;
	},
	getWorldDirection: function ( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Camera: .getWorldDirection() target is now required' );
			target = new Vector3();
		}
		this.updateMatrixWorld( true );
		const e = this.matrixWorld.elements;
		return target.set( - e[ 8 ], - e[ 9 ], - e[ 10 ] ).normalize();
	},
	updateMatrixWorld: function ( force ) {
		Object3D.prototype.updateMatrixWorld.call( this, force );
		this.matrixWorldInverse.getInverse( this.matrixWorld );
	},
	updateWorldMatrix: function ( updateParents, updateChildren ) {
		Object3D.prototype.updateWorldMatrix.call( this, updateParents, updateChildren );
		this.matrixWorldInverse.getInverse( this.matrixWorld );
	},
	clone: function () {
		return new this.constructor().copy( this );
	}
} );
function PerspectiveCamera( fov, aspect, near, far ) {
	Camera.call( this );
	this.type = 'PerspectiveCamera';
	this.fov = fov !== undefined ? fov : 50;
	this.zoom = 1;
	this.near = near !== undefined ? near : 0.1;
	this.far = far !== undefined ? far : 2000;
	this.focus = 10;
	this.aspect = aspect !== undefined ? aspect : 1;
	this.view = null;
	this.filmGauge = 35;
	this.filmOffset = 0;
	this.updateProjectionMatrix();
}
PerspectiveCamera.prototype = Object.assign( Object.create( Camera.prototype ), {
	constructor: PerspectiveCamera,
	isPerspectiveCamera: true,
	copy: function ( source, recursive ) {
		Camera.prototype.copy.call( this, source, recursive );
		this.fov = source.fov;
		this.zoom = source.zoom;
		this.near = source.near;
		this.far = source.far;
		this.focus = source.focus;
		this.aspect = source.aspect;
		this.view = source.view === null ? null : Object.assign( {}, source.view );
		this.filmGauge = source.filmGauge;
		this.filmOffset = source.filmOffset;
		return this;
	},
	setFocalLength: function ( focalLength ) {
		const vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;
		this.fov = MathUtils.RAD2DEG * 2 * Math.atan( vExtentSlope );
		this.updateProjectionMatrix();
	},
	getFocalLength: function () {
		const vExtentSlope = Math.tan( MathUtils.DEG2RAD * 0.5 * this.fov );
		return 0.5 * this.getFilmHeight() / vExtentSlope;
	},
	getEffectiveFOV: function () {
		return MathUtils.RAD2DEG * 2 * Math.atan(
			Math.tan( MathUtils.DEG2RAD * 0.5 * this.fov ) / this.zoom );
	},
	getFilmWidth: function () {
		return this.filmGauge * Math.min( this.aspect, 1 );
	},
	getFilmHeight: function () {
		return this.filmGauge / Math.max( this.aspect, 1 );
	},
	setViewOffset: function ( fullWidth, fullHeight, x, y, width, height ) {
		this.aspect = fullWidth / fullHeight;
		if ( this.view === null ) {
			this.view = {
				enabled: true,
				fullWidth: 1,
				fullHeight: 1,
				offsetX: 0,
				offsetY: 0,
				width: 1,
				height: 1
			};
		}
		this.view.enabled = true;
		this.view.fullWidth = fullWidth;
		this.view.fullHeight = fullHeight;
		this.view.offsetX = x;
		this.view.offsetY = y;
		this.view.width = width;
		this.view.height = height;
		this.updateProjectionMatrix();
	},
	clearViewOffset: function () {
		if ( this.view !== null ) {
			this.view.enabled = false;
		}
		this.updateProjectionMatrix();
	},
	updateProjectionMatrix: function () {
		const near = this.near;
		let top = near * Math.tan( MathUtils.DEG2RAD * 0.5 * this.fov ) / this.zoom;
		let height = 2 * top;
		let width = this.aspect * height;
		let left = - 0.5 * width;
		const view = this.view;
		if ( this.view !== null && this.view.enabled ) {
			const fullWidth = view.fullWidth,
				fullHeight = view.fullHeight;
			left += view.offsetX * width / fullWidth;
			top -= view.offsetY * height / fullHeight;
			width *= view.width / fullWidth;
			height *= view.height / fullHeight;
		}
		const skew = this.filmOffset;
		if ( skew !== 0 ) left += near * skew / this.getFilmWidth();
		this.projectionMatrix.makePerspective( left, left + width, top, top - height, near, this.far );
		this.projectionMatrixInverse.getInverse( this.projectionMatrix );
	},
	toJSON: function ( meta ) {
		const data = Object3D.prototype.toJSON.call( this, meta );
		data.object.fov = this.fov;
		data.object.zoom = this.zoom;
		data.object.near = this.near;
		data.object.far = this.far;
		data.object.focus = this.focus;
		data.object.aspect = this.aspect;
		if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );
		data.object.filmGauge = this.filmGauge;
		data.object.filmOffset = this.filmOffset;
		return data;
	}
} );
const fov = 90, aspect = 1;
function CubeCamera( near, far, renderTarget ) {
	Object3D.call( this );
	this.type = 'CubeCamera';
	if ( renderTarget.isWebGLCubeRenderTarget !== true ) {
		console.error( 'THREE.CubeCamera: The constructor now expects an instance of WebGLCubeRenderTarget as third parameter.' );
		return;
	}
	this.renderTarget = renderTarget;
	const cameraPX = new PerspectiveCamera( fov, aspect, near, far );
	cameraPX.layers = this.layers;
	cameraPX.up.set( 0, - 1, 0 );
	cameraPX.lookAt( new Vector3( 1, 0, 0 ) );
	this.add( cameraPX );
	const cameraNX = new PerspectiveCamera( fov, aspect, near, far );
	cameraNX.layers = this.layers;
	cameraNX.up.set( 0, - 1, 0 );
	cameraNX.lookAt( new Vector3( - 1, 0, 0 ) );
	this.add( cameraNX );
	const cameraPY = new PerspectiveCamera( fov, aspect, near, far );
	cameraPY.layers = this.layers;
	cameraPY.up.set( 0, 0, 1 );
	cameraPY.lookAt( new Vector3( 0, 1, 0 ) );
	this.add( cameraPY );
	const cameraNY = new PerspectiveCamera( fov, aspect, near, far );
	cameraNY.layers = this.layers;
	cameraNY.up.set( 0, 0, - 1 );
	cameraNY.lookAt( new Vector3( 0, - 1, 0 ) );
	this.add( cameraNY );
	const cameraPZ = new PerspectiveCamera( fov, aspect, near, far );
	cameraPZ.layers = this.layers;
	cameraPZ.up.set( 0, - 1, 0 );
	cameraPZ.lookAt( new Vector3( 0, 0, 1 ) );
	this.add( cameraPZ );
	const cameraNZ = new PerspectiveCamera( fov, aspect, near, far );
	cameraNZ.layers = this.layers;
	cameraNZ.up.set( 0, - 1, 0 );
	cameraNZ.lookAt( new Vector3( 0, 0, - 1 ) );
	this.add( cameraNZ );
	this.update = function ( renderer, scene ) {
		if ( this.parent === null ) this.updateMatrixWorld();
		const currentXrEnabled = renderer.xr.enabled;
		const currentRenderTarget = renderer.getRenderTarget();
		renderer.xr.enabled = false;
		const generateMipmaps = renderTarget.texture.generateMipmaps;
		renderTarget.texture.generateMipmaps = false;
		renderer.setRenderTarget( renderTarget, 0 );
		renderer.render( scene, cameraPX );
		renderer.setRenderTarget( renderTarget, 1 );
		renderer.render( scene, cameraNX );
		renderer.setRenderTarget( renderTarget, 2 );
		renderer.render( scene, cameraPY );
		renderer.setRenderTarget( renderTarget, 3 );
		renderer.render( scene, cameraNY );
		renderer.setRenderTarget( renderTarget, 4 );
		renderer.render( scene, cameraPZ );
		renderTarget.texture.generateMipmaps = generateMipmaps;
		renderer.setRenderTarget( renderTarget, 5 );
		renderer.render( scene, cameraNZ );
		renderer.setRenderTarget( currentRenderTarget );
		renderer.xr.enabled = currentXrEnabled;
	};
	this.clear = function ( renderer, color, depth, stencil ) {
		const currentRenderTarget = renderer.getRenderTarget();
		for ( let i = 0; i < 6; i ++ ) {
			renderer.setRenderTarget( renderTarget, i );
			renderer.clear( color, depth, stencil );
		}
		renderer.setRenderTarget( currentRenderTarget );
	};
}
CubeCamera.prototype = Object.create( Object3D.prototype );
CubeCamera.prototype.constructor = CubeCamera;
function WebGLCubeRenderTarget( size, options, dummy ) {
	if ( Number.isInteger( options ) ) {
		console.warn( 'THREE.WebGLCubeRenderTarget: constructor signature is now WebGLCubeRenderTarget( size, options )' );
		options = dummy;
	}
	WebGLRenderTarget.call( this, size, size, options );
	this.texture.isWebGLCubeRenderTargetTexture = true;
}
WebGLCubeRenderTarget.prototype = Object.create( WebGLRenderTarget.prototype );
WebGLCubeRenderTarget.prototype.constructor = WebGLCubeRenderTarget;
WebGLCubeRenderTarget.prototype.isWebGLCubeRenderTarget = true;
WebGLCubeRenderTarget.prototype.fromEquirectangularTexture = function ( renderer, texture ) {
	this.texture.type = texture.type;
	this.texture.format = RGBAFormat;
	this.texture.encoding = texture.encoding;
	this.texture.generateMipmaps = texture.generateMipmaps;
	this.texture.minFilter = texture.minFilter;
	this.texture.magFilter = texture.magFilter;
	const shader = {
		uniforms: {
			tEquirect: { value: null },
		},
		vertexShader: `

			varying vec3 vWorldDirection;

			vec3 transformDirection( in vec3 dir, in mat4 matrix ) {

				return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );

			}

			void main() {

				vWorldDirection = transformDirection( position, modelMatrix );

				#include <begin_vertex>
				#include <project_vertex>

			}
		`,
		fragmentShader: `

			uniform sampler2D tEquirect;

			varying vec3 vWorldDirection;

			#include <common>

			void main() {

				vec3 direction = normalize( vWorldDirection );

				vec2 sampleUV = equirectUv( direction );

				gl_FragColor = texture2D( tEquirect, sampleUV );

			}
		`
	};
	const geometry = new BoxBufferGeometry( 5, 5, 5 );
	const material = new ShaderMaterial( {
		name: 'CubemapFromEquirect',
		uniforms: cloneUniforms( shader.uniforms ),
		vertexShader: shader.vertexShader,
		fragmentShader: shader.fragmentShader,
		side: BackSide,
		blending: NoBlending
	} );
	material.uniforms.tEquirect.value = texture;
	const mesh = new Mesh( geometry, material );
	const currentMinFilter = texture.minFilter;
	if ( texture.minFilter === LinearMipmapLinearFilter ) texture.minFilter = LinearFilter;
	const camera = new CubeCamera( 1, 10, this );
	camera.update( renderer, mesh );
	texture.minFilter = currentMinFilter;
	mesh.geometry.dispose();
	mesh.material.dispose();
	return this;
};
function DataTexture( data, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {
	Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );
	this.image = { data: data || null, width: width || 1, height: height || 1 };
	this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
	this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
	this.generateMipmaps = false;
	this.flipY = false;
	this.unpackAlignment = 1;
	this.needsUpdate = true;
}
DataTexture.prototype = Object.create( Texture.prototype );
DataTexture.prototype.constructor = DataTexture;
DataTexture.prototype.isDataTexture = true;
const _sphere$1 = new Sphere();
const _vector$5 = new Vector3();
class Frustum {
	constructor( p0, p1, p2, p3, p4, p5 ) {
		this.planes = [
			( p0 !== undefined ) ? p0 : new Plane(),
			( p1 !== undefined ) ? p1 : new Plane(),
			( p2 !== undefined ) ? p2 : new Plane(),
			( p3 !== undefined ) ? p3 : new Plane(),
			( p4 !== undefined ) ? p4 : new Plane(),
			( p5 !== undefined ) ? p5 : new Plane()
		];
	}
	set( p0, p1, p2, p3, p4, p5 ) {
		const planes = this.planes;
		planes[ 0 ].copy( p0 );
		planes[ 1 ].copy( p1 );
		planes[ 2 ].copy( p2 );
		planes[ 3 ].copy( p3 );
		planes[ 4 ].copy( p4 );
		planes[ 5 ].copy( p5 );
		return this;
	}
	clone() {
		return new this.constructor().copy( this );
	}
	copy( frustum ) {
		const planes = this.planes;
		for ( let i = 0; i < 6; i ++ ) {
			planes[ i ].copy( frustum.planes[ i ] );
		}
		return this;
	}
	setFromProjectionMatrix( m ) {
		const planes = this.planes;
		const me = m.elements;
		const me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];
		const me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];
		const me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];
		const me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];
		planes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();
		planes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();
		planes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();
		planes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();
		planes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();
		planes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();
		return this;
	}
	intersectsObject( object ) {
		const geometry = object.geometry;
		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
		_sphere$1.copy( geometry.boundingSphere ).applyMatrix4( object.matrixWorld );
		return this.intersectsSphere( _sphere$1 );
	}
	intersectsSprite( sprite ) {
		_sphere$1.center.set( 0, 0, 0 );
		_sphere$1.radius = 0.7071067811865476;
		_sphere$1.applyMatrix4( sprite.matrixWorld );
		return this.intersectsSphere( _sphere$1 );
	}
	intersectsSphere( sphere ) {
		const planes = this.planes;
		const center = sphere.center;
		const negRadius = - sphere.radius;
		for ( let i = 0; i < 6; i ++ ) {
			const distance = planes[ i ].distanceToPoint( center );
			if ( distance < negRadius ) {
				return false;
			}
		}
		return true;
	}
	intersectsBox( box ) {
		const planes = this.planes;
		for ( let i = 0; i < 6; i ++ ) {
			const plane = planes[ i ];
			_vector$5.x = plane.normal.x > 0 ? box.max.x : box.min.x;
			_vector$5.y = plane.normal.y > 0 ? box.max.y : box.min.y;
			_vector$5.z = plane.normal.z > 0 ? box.max.z : box.min.z;
			if ( plane.distanceToPoint( _vector$5 ) < 0 ) {
				return false;
			}
		}
		return true;
	}
	containsPoint( point ) {
		const planes = this.planes;
		for ( let i = 0; i < 6; i ++ ) {
			if ( planes[ i ].distanceToPoint( point ) < 0 ) {
				return false;
			}
		}
		return true;
	}
}
function WebGLAnimation() {
	let context = null;
	let isAnimating = false;
	let animationLoop = null;
	let requestId = null;
	function onAnimationFrame( time, frame ) {
		animationLoop( time, frame );
		requestId = context.requestAnimationFrame( onAnimationFrame );
	}
	return {
		start: function () {
			if ( isAnimating === true ) return;
			if ( animationLoop === null ) return;
			requestId = context.requestAnimationFrame( onAnimationFrame );
			isAnimating = true;
		},
		stop: function () {
			context.cancelAnimationFrame( requestId );
			isAnimating = false;
		},
		setAnimationLoop: function ( callback ) {
			animationLoop = callback;
		},
		setContext: function ( value ) {
			context = value;
		}
	};
}
function WebGLAttributes( gl, capabilities ) {
	const isWebGL2 = capabilities.isWebGL2;
	const buffers = new WeakMap();
	function createBuffer( attribute, bufferType ) {
		const array = attribute.array;
		const usage = attribute.usage;
		const buffer = gl.createBuffer();
		gl.bindBuffer( bufferType, buffer );
		gl.bufferData( bufferType, array, usage );
		attribute.onUploadCallback();
		let type = 5126;
		if ( array instanceof Float32Array ) {
			type = 5126;
		} else if ( array instanceof Float64Array ) {
			console.warn( 'THREE.WebGLAttributes: Unsupported data buffer format: Float64Array.' );
		} else if ( array instanceof Uint16Array ) {
			type = 5123;
		} else if ( array instanceof Int16Array ) {
			type = 5122;
		} else if ( array instanceof Uint32Array ) {
			type = 5125;
		} else if ( array instanceof Int32Array ) {
			type = 5124;
		} else if ( array instanceof Int8Array ) {
			type = 5120;
		} else if ( array instanceof Uint8Array ) {
			type = 5121;
		}
		return {
			buffer: buffer,
			type: type,
			bytesPerElement: array.BYTES_PER_ELEMENT,
			version: attribute.version
		};
	}
	function updateBuffer( buffer, attribute, bufferType ) {
		const array = attribute.array;
		const updateRange = attribute.updateRange;
		gl.bindBuffer( bufferType, buffer );
		if ( updateRange.count === - 1 ) {
			gl.bufferSubData( bufferType, 0, array );
		} else {
			if ( isWebGL2 ) {
				gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
					array, updateRange.offset, updateRange.count );
			} else {
				gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
					array.subarray( updateRange.offset, updateRange.offset + updateRange.count ) );
			}
			updateRange.count = - 1;
		}
	}
	function get( attribute ) {
		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
		return buffers.get( attribute );
	}
	function remove( attribute ) {
		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
		const data = buffers.get( attribute );
		if ( data ) {
			gl.deleteBuffer( data.buffer );
			buffers.delete( attribute );
		}
	}
	function update( attribute, bufferType ) {
		if ( attribute.isGLBufferAttribute ) {
			var cached = buffers.get( attribute );
			if ( ! cached || cached.version < attribute.version ) {
				buffers.set( attribute, {
					buffer: attribute.buffer,
					type: attribute.type,
					bytesPerElement: attribute.elementSize,
					version: attribute.version
				} );
			}
			return;
		}
		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
		const data = buffers.get( attribute );
		if ( data === undefined ) {
			buffers.set( attribute, createBuffer( attribute, bufferType ) );
		} else if ( data.version < attribute.version ) {
			updateBuffer( data.buffer, attribute, bufferType );
			data.version = attribute.version;
		}
	}
	return {
		get: get,
		remove: remove,
		update: update
	};
}
class PlaneGeometry extends Geometry {
	constructor( width, height, widthSegments, heightSegments ) {
		super();
		this.type = 'PlaneGeometry';
		this.parameters = {
			width: width,
			height: height,
			widthSegments: widthSegments,
			heightSegments: heightSegments
		};
		this.fromBufferGeometry( new PlaneBufferGeometry( width, height, widthSegments, heightSegments ) );
		this.mergeVertices();
	}
}
class PlaneBufferGeometry extends BufferGeometry {
	constructor( width, height, widthSegments, heightSegments ) {
		super();
		this.type = 'PlaneBufferGeometry';
		this.parameters = {
			width: width,
			height: height,
			widthSegments: widthSegments,
			heightSegments: heightSegments
		};
		width = width || 1;
		height = height || 1;
		const width_half = width / 2;
		const height_half = height / 2;
		const gridX = Math.floor( widthSegments ) || 1;
		const gridY = Math.floor( heightSegments ) || 1;
		const gridX1 = gridX + 1;
		const gridY1 = gridY + 1;
		const segment_width = width / gridX;
		const segment_height = height / gridY;
		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];
		for ( let iy = 0; iy < gridY1; iy ++ ) {
			const y = iy * segment_height - height_half;
			for ( let ix = 0; ix < gridX1; ix ++ ) {
				const x = ix * segment_width - width_half;
				vertices.push( x, - y, 0 );
				normals.push( 0, 0, 1 );
				uvs.push( ix / gridX );
				uvs.push( 1 - ( iy / gridY ) );
			}
		}
		for ( let iy = 0; iy < gridY; iy ++ ) {
			for ( let ix = 0; ix < gridX; ix ++ ) {
				const a = ix + gridX1 * iy;
				const b = ix + gridX1 * ( iy + 1 );
				const c = ( ix + 1 ) + gridX1 * ( iy + 1 );
				const d = ( ix + 1 ) + gridX1 * iy;
				indices.push( a, b, d );
				indices.push( b, c, d );
			}
		}
		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
	}
}
var alphamap_fragment = "#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif";
var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";
var alphatest_fragment = "#ifdef ALPHATEST\n\tif ( diffuseColor.a < ALPHATEST ) discard;\n#endif";
var aomap_fragment = "#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( STANDARD )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.specularRoughness );\n\t#endif\n#endif";
var aomap_pars_fragment = "#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif";
var begin_vertex = "vec3 transformed = vec3( position );";
var beginnormal_vertex = "vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n\tvec3 objectTangent = vec3( tangent.xyz );\n#endif";
var bsdfs = "vec2 integrateSpecularBRDF( const in float dotNV, const in float roughness ) {\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\treturn vec2( -1.04, 1.04 ) * a004 + r.zw;\n}\nfloat punctualLightIntensityToIrradianceFactor( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n#if defined ( PHYSICALLY_CORRECT_LIGHTS )\n\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\tif( cutoffDistance > 0.0 ) {\n\t\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t}\n\treturn distanceFalloff;\n#else\n\tif( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\n\t\treturn pow( saturate( -lightDistance / cutoffDistance + 1.0 ), decayExponent );\n\t}\n\treturn 1.0;\n#endif\n}\nvec3 BRDF_Diffuse_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 specularColor, const in float dotLH ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotLH - 6.98316 ) * dotLH );\n\treturn ( 1.0 - specularColor ) * fresnel + specularColor;\n}\nvec3 F_Schlick_RoughnessDependent( const in vec3 F0, const in float dotNV, const in float roughness ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotNV - 6.98316 ) * dotNV );\n\tvec3 Fr = max( vec3( 1.0 - roughness ), F0 ) - F0;\n\treturn Fr * fresnel + F0;\n}\nfloat G_GGX_Smith( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gl = dotNL + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\tfloat gv = dotNV + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\treturn 1.0 / ( gl * gv );\n}\nfloat G_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\nvec3 BRDF_Specular_GGX( const in IncidentLight incidentLight, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( incidentLight.direction + viewDir );\n\tfloat dotNL = saturate( dot( normal, incidentLight.direction ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\tfloat D = D_GGX( alpha, dotNH );\n\treturn F * ( G * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\nvec3 BRDF_Specular_GGX_Environment( const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\treturn specularColor * brdf.x + brdf.y;\n}\nvoid BRDF_Specular_Multiscattering_Environment( const in GeometricContext geometry, const in vec3 specularColor, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\tvec3 F = F_Schlick_RoughnessDependent( specularColor, dotNV, roughness );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\tvec3 FssEss = F * brdf.x + brdf.y;\n\tfloat Ess = brdf.x + brdf.y;\n\tfloat Ems = 1.0 - Ess;\n\tvec3 Favg = specularColor + ( 1.0 - specularColor ) * 0.047619;\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\n\tsingleScatter += FssEss;\n\tmultiScatter += Fms * Ems;\n}\nfloat G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_Specular_BlinnPhong( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n}\nfloat GGXRoughnessToBlinnExponent( const in float ggxRoughness ) {\n\treturn ( 2.0 / pow2( ggxRoughness + 0.0001 ) - 2.0 );\n}\nfloat BlinnExponentToGGXRoughness( const in float blinnExponent ) {\n\treturn sqrt( 2.0 / ( blinnExponent + 2.0 ) );\n}\n#if defined( USE_SHEEN )\nfloat D_Charlie(float roughness, float NoH) {\n\tfloat invAlpha = 1.0 / roughness;\n\tfloat cos2h = NoH * NoH;\n\tfloat sin2h = max(1.0 - cos2h, 0.0078125);\treturn (2.0 + invAlpha) * pow(sin2h, invAlpha * 0.5) / (2.0 * PI);\n}\nfloat V_Neubelt(float NoV, float NoL) {\n\treturn saturate(1.0 / (4.0 * (NoL + NoV - NoL * NoV)));\n}\nvec3 BRDF_Specular_Sheen( const in float roughness, const in vec3 L, const in GeometricContext geometry, vec3 specularColor ) {\n\tvec3 N = geometry.normal;\n\tvec3 V = geometry.viewDir;\n\tvec3 H = normalize( V + L );\n\tfloat dotNH = saturate( dot( N, H ) );\n\treturn specularColor * D_Charlie( roughness, dotNH ) * V_Neubelt( dot(N, V), dot(N, L) );\n}\n#endif";
var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vUv );\n\t\tvec2 dSTdy = dFdy( vUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy ) {\n\t\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\n\t\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 );\n\t\tfDet *= ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif";
var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#pragma unroll_loop_end\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t\tif ( clipped ) discard;\n\t#endif\n#endif";
var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif";
var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n#endif";
var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvClipPosition = - mvPosition.xyz;\n#endif";
var color_fragment = "#ifdef USE_COLOR\n\tdiffuseColor.rgb *= vColor;\n#endif";
var color_pars_fragment = "#ifdef USE_COLOR\n\tvarying vec3 vColor;\n#endif";
var color_pars_vertex = "#if defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvarying vec3 vColor;\n#endif";
var color_vertex = "#if defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvColor = vec3( 1.0 );\n#endif\n#ifdef USE_COLOR\n\tvColor.xyz *= color.xyz;\n#endif\n#ifdef USE_INSTANCING_COLOR\n\tvColor.xyz *= instanceColor.xyz;\n#endif";
var common = "#define PI 3.141592653589793\n#define PI2 6.283185307179586\n#define PI_HALF 1.5707963267948966\n#define RECIPROCAL_PI 0.3183098861837907\n#define RECIPROCAL_PI2 0.15915494309189535\n#define EPSILON 1e-6\n#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\n#define whiteComplement(a) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract(sin(sn) * c);\n}\n#ifdef HIGH_PRECISION\n\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\n#else\n\tfloat max3( vec3 v ) { return max( max( v.x, v.y ), v.z ); }\n\tfloat precisionSafeLength( vec3 v ) {\n\t\tfloat maxComponent = max3( abs( v ) );\n\t\treturn length( v / maxComponent ) * maxComponent;\n\t}\n#endif\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\nstruct GeometricContext {\n\tvec3 position;\n\tvec3 normal;\n\tvec3 viewDir;\n#ifdef CLEARCOAT\n\tvec3 clearcoatNormal;\n#endif\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nvec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\tfloat distance = dot( planeNormal, point - pointOnPlane );\n\treturn - distance * planeNormal + point;\n}\nfloat sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn sign( dot( point - pointOnPlane, planeNormal ) );\n}\nvec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nfloat linearToRelativeLuminance( const in vec3 color ) {\n\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\n\treturn dot( weights, color.rgb );\n}\nbool isPerspectiveMatrix( mat4 m ) {\n\treturn m[ 2 ][ 3 ] == - 1.0;\n}\nvec2 equirectUv( in vec3 dir ) {\n\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\n\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\treturn vec2( u, v );\n}";
var cube_uv_reflection_fragment = "#ifdef ENVMAP_TYPE_CUBE_UV\n\t#define cubeUV_maxMipLevel 8.0\n\t#define cubeUV_minMipLevel 4.0\n\t#define cubeUV_maxTileSize 256.0\n\t#define cubeUV_minTileSize 16.0\n\tfloat getFace( vec3 direction ) {\n\t\tvec3 absDirection = abs( direction );\n\t\tfloat face = - 1.0;\n\t\tif ( absDirection.x > absDirection.z ) {\n\t\t\tif ( absDirection.x > absDirection.y )\n\t\t\t\tface = direction.x > 0.0 ? 0.0 : 3.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t} else {\n\t\t\tif ( absDirection.z > absDirection.y )\n\t\t\t\tface = direction.z > 0.0 ? 2.0 : 5.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t}\n\t\treturn face;\n\t}\n\tvec2 getUV( vec3 direction, float face ) {\n\t\tvec2 uv;\n\t\tif ( face == 0.0 ) {\n\t\t\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 1.0 ) {\n\t\t\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\n\t\t} else if ( face == 2.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\n\t\t} else if ( face == 3.0 ) {\n\t\t\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 4.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\n\t\t} else {\n\t\t\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\n\t\t}\n\t\treturn 0.5 * ( uv + 1.0 );\n\t}\n\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\n\t\tfloat face = getFace( direction );\n\t\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\n\t\tmipInt = max( mipInt, cubeUV_minMipLevel );\n\t\tfloat faceSize = exp2( mipInt );\n\t\tfloat texelSize = 1.0 / ( 3.0 * cubeUV_maxTileSize );\n\t\tvec2 uv = getUV( direction, face ) * ( faceSize - 1.0 );\n\t\tvec2 f = fract( uv );\n\t\tuv += 0.5 - f;\n\t\tif ( face > 2.0 ) {\n\t\t\tuv.y += faceSize;\n\t\t\tface -= 3.0;\n\t\t}\n\t\tuv.x += face * faceSize;\n\t\tif ( mipInt < cubeUV_maxMipLevel ) {\n\t\t\tuv.y += 2.0 * cubeUV_maxTileSize;\n\t\t}\n\t\tuv.y += filterInt * 2.0 * cubeUV_minTileSize;\n\t\tuv.x += 3.0 * max( 0.0, cubeUV_maxTileSize - 2.0 * faceSize );\n\t\tuv *= texelSize;\n\t\tvec3 tl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x += texelSize;\n\t\tvec3 tr = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.y += texelSize;\n\t\tvec3 br = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x -= texelSize;\n\t\tvec3 bl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tvec3 tm = mix( tl, tr, f.x );\n\t\tvec3 bm = mix( bl, br, f.x );\n\t\treturn mix( tm, bm, f.y );\n\t}\n\t#define r0 1.0\n\t#define v0 0.339\n\t#define m0 - 2.0\n\t#define r1 0.8\n\t#define v1 0.276\n\t#define m1 - 1.0\n\t#define r4 0.4\n\t#define v4 0.046\n\t#define m4 2.0\n\t#define r5 0.305\n\t#define v5 0.016\n\t#define m5 3.0\n\t#define r6 0.21\n\t#define v6 0.0038\n\t#define m6 4.0\n\tfloat roughnessToMip( float roughness ) {\n\t\tfloat mip = 0.0;\n\t\tif ( roughness >= r1 ) {\n\t\t\tmip = ( r0 - roughness ) * ( m1 - m0 ) / ( r0 - r1 ) + m0;\n\t\t} else if ( roughness >= r4 ) {\n\t\t\tmip = ( r1 - roughness ) * ( m4 - m1 ) / ( r1 - r4 ) + m1;\n\t\t} else if ( roughness >= r5 ) {\n\t\t\tmip = ( r4 - roughness ) * ( m5 - m4 ) / ( r4 - r5 ) + m4;\n\t\t} else if ( roughness >= r6 ) {\n\t\t\tmip = ( r5 - roughness ) * ( m6 - m5 ) / ( r5 - r6 ) + m5;\n\t\t} else {\n\t\t\tmip = - 2.0 * log2( 1.16 * roughness );\t\t}\n\t\treturn mip;\n\t}\n\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\n\t\tfloat mip = clamp( roughnessToMip( roughness ), m0, cubeUV_maxMipLevel );\n\t\tfloat mipF = fract( mip );\n\t\tfloat mipInt = floor( mip );\n\t\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\n\t\tif ( mipF == 0.0 ) {\n\t\t\treturn vec4( color0, 1.0 );\n\t\t} else {\n\t\t\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\n\t\t\treturn vec4( mix( color0, color1, mipF ), 1.0 );\n\t\t}\n\t}\n#endif";
var defaultnormal_vertex = "vec3 transformedNormal = objectNormal;\n#ifdef USE_INSTANCING\n\tmat3 m = mat3( instanceMatrix );\n\ttransformedNormal /= vec3( dot( m[ 0 ], m[ 0 ] ), dot( m[ 1 ], m[ 1 ] ), dot( m[ 2 ], m[ 2 ] ) );\n\ttransformedNormal = m * transformedNormal;\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n\tvec3 transformedTangent = ( modelViewMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#ifdef FLIP_SIDED\n\t\ttransformedTangent = - transformedTangent;\n\t#endif\n#endif";
var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif";
var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vUv ).x * displacementScale + displacementBias );\n#endif";
var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\n\temissiveColor.rgb = emissiveMapTexelToLinear( emissiveColor ).rgb;\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif";
var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif";
var encodings_fragment = "gl_FragColor = linearToOutputTexel( gl_FragColor );";
var encodings_pars_fragment = "\nvec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 GammaToLinear( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( gammaFactor ) ), value.a );\n}\nvec4 LinearToGamma( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( 1.0 / gammaFactor ) ), value.a );\n}\nvec4 sRGBToLinear( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.a );\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}\nvec4 RGBEToLinear( in vec4 value ) {\n\treturn vec4( value.rgb * exp2( value.a * 255.0 - 128.0 ), 1.0 );\n}\nvec4 LinearToRGBE( in vec4 value ) {\n\tfloat maxComponent = max( max( value.r, value.g ), value.b );\n\tfloat fExp = clamp( ceil( log2( maxComponent ) ), -128.0, 127.0 );\n\treturn vec4( value.rgb / exp2( fExp ), ( fExp + 128.0 ) / 255.0 );\n}\nvec4 RGBMToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * value.a * maxRange, 1.0 );\n}\nvec4 LinearToRGBM( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat M = clamp( maxRGB / maxRange, 0.0, 1.0 );\n\tM = ceil( M * 255.0 ) / 255.0;\n\treturn vec4( value.rgb / ( M * maxRange ), M );\n}\nvec4 RGBDToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * ( ( maxRange / 255.0 ) / value.a ), 1.0 );\n}\nvec4 LinearToRGBD( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat D = max( maxRange / maxRGB, 1.0 );\n\tD = clamp( floor( D ) / 255.0, 0.0, 1.0 );\n\treturn vec4( value.rgb * ( D * ( 255.0 / maxRange ) ), D );\n}\nconst mat3 cLogLuvM = mat3( 0.2209, 0.3390, 0.4184, 0.1138, 0.6780, 0.7319, 0.0102, 0.1130, 0.2969 );\nvec4 LinearToLogLuv( in vec4 value ) {\n\tvec3 Xp_Y_XYZp = cLogLuvM * value.rgb;\n\tXp_Y_XYZp = max( Xp_Y_XYZp, vec3( 1e-6, 1e-6, 1e-6 ) );\n\tvec4 vResult;\n\tvResult.xy = Xp_Y_XYZp.xy / Xp_Y_XYZp.z;\n\tfloat Le = 2.0 * log2(Xp_Y_XYZp.y) + 127.0;\n\tvResult.w = fract( Le );\n\tvResult.z = ( Le - ( floor( vResult.w * 255.0 ) ) / 255.0 ) / 255.0;\n\treturn vResult;\n}\nconst mat3 cLogLuvInverseM = mat3( 6.0014, -2.7008, -1.7996, -1.3320, 3.1029, -5.7721, 0.3008, -1.0882, 5.6268 );\nvec4 LogLuvToLinear( in vec4 value ) {\n\tfloat Le = value.z * 255.0 + value.w;\n\tvec3 Xp_Y_XYZp;\n\tXp_Y_XYZp.y = exp2( ( Le - 127.0 ) / 2.0 );\n\tXp_Y_XYZp.z = Xp_Y_XYZp.y / value.y;\n\tXp_Y_XYZp.x = value.x * Xp_Y_XYZp.z;\n\tvec3 vRGB = cLogLuvInverseM * Xp_Y_XYZp.rgb;\n\treturn vec4( max( vRGB, 0.0 ), 1.0 );\n}";
var envmap_fragment = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvec3 cameraToFrag;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\tvec4 envColor = textureCubeUV( envMap, reflectVec, 0.0 );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\t#ifndef ENVMAP_TYPE_CUBE_UV\n\t\tenvColor = envMapTexelToLinear( envColor );\n\t#endif\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif";
var envmap_common_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float envMapIntensity;\n\tuniform float flipEnvMap;\n\tuniform int maxMipLevel;\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\t\n#endif";
var envmap_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float reflectivity;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\tvarying vec3 vWorldPosition;\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif";
var envmap_pars_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) ||defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\t\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif";
var envmap_vertex = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif";
var fog_vertex = "#ifdef USE_FOG\n\tfogDepth = - mvPosition.z;\n#endif";
var fog_pars_vertex = "#ifdef USE_FOG\n\tvarying float fogDepth;\n#endif";
var fog_fragment = "#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * fogDepth * fogDepth );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, fogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif";
var fog_pars_fragment = "#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float fogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif";
var gradientmap_pars_fragment = "#ifdef USE_GRADIENTMAP\n\tuniform sampler2D gradientMap;\n#endif\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\tfloat dotNL = dot( normal, lightDirection );\n\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t#ifdef USE_GRADIENTMAP\n\t\treturn texture2D( gradientMap, coord ).rgb;\n\t#else\n\t\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\n\t#endif\n}";
var lightmap_fragment = "#ifdef USE_LIGHTMAP\n\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\treflectedLight.indirectDiffuse += PI * lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n#endif";
var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif";
var lights_lambert_vertex = "vec3 diffuse = vec3( 1.0 );\nGeometricContext geometry;\ngeometry.position = mvPosition.xyz;\ngeometry.normal = normalize( transformedNormal );\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( -mvPosition.xyz );\nGeometricContext backGeometry;\nbackGeometry.position = geometry.position;\nbackGeometry.normal = -geometry.normal;\nbackGeometry.viewDir = geometry.viewDir;\nvLightFront = vec3( 0.0 );\nvIndirectFront = vec3( 0.0 );\n#ifdef DOUBLE_SIDED\n\tvLightBack = vec3( 0.0 );\n\tvIndirectBack = vec3( 0.0 );\n#endif\nIncidentLight directLight;\nfloat dotNL;\nvec3 directLightColor_Diffuse;\nvIndirectFront += getAmbientLightIrradiance( ambientLightColor );\nvIndirectFront += getLightProbeIrradiance( lightProbe, geometry );\n#ifdef DOUBLE_SIDED\n\tvIndirectBack += getAmbientLightIrradiance( ambientLightColor );\n\tvIndirectBack += getLightProbeIrradiance( lightProbe, backGeometry );\n#endif\n#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tgetPointDirectLightIrradiance( pointLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tgetSpotDirectLightIrradiance( spotLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tgetDirectionalDirectLightIrradiance( directionalLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\tvIndirectFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvIndirectBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry );\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif";
var lights_pars_begin = "uniform bool receiveShadow;\nuniform vec3 ambientLightColor;\nuniform vec3 lightProbe[ 9 ];\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\n\tfloat x = normal.x, y = normal.y, z = normal.z;\n\tvec3 result = shCoefficients[ 0 ] * 0.886227;\n\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\n\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\n\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\n\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\n\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\n\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\n\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\n\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\n\treturn result;\n}\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in GeometricContext geometry ) {\n\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\n\treturn irradiance;\n}\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treturn irradiance;\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalDirectLightIrradiance( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tdirectLight.color = directionalLight.color;\n\t\tdirectLight.direction = directionalLight.direction;\n\t\tdirectLight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointDirectLightIrradiance( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = pointLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tdirectLight.color = pointLight.color;\n\t\tdirectLight.color *= punctualLightIntensityToIrradianceFactor( lightDistance, pointLight.distance, pointLight.decay );\n\t\tdirectLight.visible = ( directLight.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotDirectLightIrradiance( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = spotLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tfloat angleCos = dot( directLight.direction, spotLight.direction );\n\t\tif ( angleCos > spotLight.coneCos ) {\n\t\t\tfloat spotEffect = smoothstep( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\t\tdirectLight.color = spotLight.color;\n\t\t\tdirectLight.color *= spotEffect * punctualLightIntensityToIrradianceFactor( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tdirectLight.visible = true;\n\t\t} else {\n\t\t\tdirectLight.color = vec3( 0.0 );\n\t\t\tdirectLight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in GeometricContext geometry ) {\n\t\tfloat dotNL = dot( geometry.normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tirradiance *= PI;\n\t\t#endif\n\t\treturn irradiance;\n\t}\n#endif";
var envmap_physical_pars_fragment = "#if defined( USE_ENVMAP )\n\t#ifdef ENVMAP_MODE_REFRACTION\n\t\tuniform float refractionRatio;\n\t#endif\n\tvec3 getLightProbeIndirectIrradiance( const in GeometricContext geometry, const in int maxMIPLevel ) {\n\t\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\n\t\t#else\n\t\t\tvec4 envMapColor = vec4( 0.0 );\n\t\t#endif\n\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t}\n\tfloat getSpecularMIPLevel( const in float roughness, const in int maxMIPLevel ) {\n\t\tfloat maxMIPLevelScalar = float( maxMIPLevel );\n\t\tfloat sigma = PI * roughness * roughness / ( 1.0 + roughness );\n\t\tfloat desiredMIPLevel = maxMIPLevelScalar + log2( sigma );\n\t\treturn clamp( desiredMIPLevel, 0.0, maxMIPLevelScalar );\n\t}\n\tvec3 getLightProbeIndirectRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in int maxMIPLevel ) {\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( -viewDir, normal );\n\t\t\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( -viewDir, normal, refractionRatio );\n\t\t#endif\n\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\tfloat specularMIPLevel = getSpecularMIPLevel( roughness, maxMIPLevel );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\n\t\t#endif\n\t\treturn envMapColor.rgb * envMapIntensity;\n\t}\n#endif";
var lights_toon_fragment = "ToonMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;";
var lights_toon_pars_fragment = "varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct ToonMaterial {\n\tvec3 diffuseColor;\n};\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_Toon\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Toon\n#define Material_LightProbeLOD( material )\t(0)";
var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;";
var lights_phong_pars_fragment = "varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct BlinnPhongMaterial {\n\tvec3 diffuseColor;\n\tvec3 specularColor;\n\tfloat specularShininess;\n\tfloat specularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_Specular_BlinnPhong( directLight, geometry, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )\t(0)";
var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nvec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\nmaterial.specularRoughness = max( roughnessFactor, 0.0525 );material.specularRoughness += geometryRoughness;\nmaterial.specularRoughness = min( material.specularRoughness, 1.0 );\n#ifdef REFLECTIVITY\n\tmaterial.specularColor = mix( vec3( MAXIMUM_SPECULAR_COEFFICIENT * pow2( reflectivity ) ), diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( DEFAULT_SPECULAR_COEFFICIENT ), diffuseColor.rgb, metalnessFactor );\n#endif\n#ifdef CLEARCOAT\n\tmaterial.clearcoat = clearcoat;\n\tmaterial.clearcoatRoughness = clearcoatRoughness;\n\t#ifdef USE_CLEARCOATMAP\n\t\tmaterial.clearcoat *= texture2D( clearcoatMap, vUv ).x;\n\t#endif\n\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\t\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vUv ).y;\n\t#endif\n\tmaterial.clearcoat = saturate( material.clearcoat );\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\n\tmaterial.clearcoatRoughness += geometryRoughness;\n\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\n#endif\n#ifdef USE_SHEEN\n\tmaterial.sheenColor = sheen;\n#endif";
var lights_physical_pars_fragment = "struct PhysicalMaterial {\n\tvec3 diffuseColor;\n\tfloat specularRoughness;\n\tvec3 specularColor;\n#ifdef CLEARCOAT\n\tfloat clearcoat;\n\tfloat clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tvec3 sheenColor;\n#endif\n};\n#define MAXIMUM_SPECULAR_COEFFICIENT 0.16\n#define DEFAULT_SPECULAR_COEFFICIENT 0.04\nfloat clearcoatDHRApprox( const in float roughness, const in float dotNL ) {\n\treturn DEFAULT_SPECULAR_COEFFICIENT + ( 1.0 - DEFAULT_SPECULAR_COEFFICIENT ) * ( pow( 1.0 - dotNL, 5.0 ) * pow( 1.0 - roughness, 2.0 ) );\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometry.normal;\n\t\tvec3 viewDir = geometry.viewDir;\n\t\tvec3 position = geometry.position;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.specularRoughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3(    0, 1,    0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNL = saturate( dot( geometry.clearcoatNormal, directLight.direction ) );\n\t\tvec3 ccIrradiance = ccDotNL * directLight.color;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tccIrradiance *= PI;\n\t\t#endif\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t\treflectedLight.directSpecular += ccIrradiance * material.clearcoat * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\t#ifdef USE_SHEEN\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_Sheen(\n\t\t\tmaterial.specularRoughness,\n\t\t\tdirectLight.direction,\n\t\t\tgeometry,\n\t\t\tmaterial.sheenColor\n\t\t);\n\t#else\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.normal, material.specularColor, material.specularRoughness);\n\t#endif\n\treflectedLight.directDiffuse += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNV = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular += clearcoatRadiance * material.clearcoat * BRDF_Specular_GGX_Environment( geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t\tfloat ccDotNL = ccDotNV;\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\tfloat clearcoatInv = 1.0 - clearcoatDHR;\n\tvec3 singleScattering = vec3( 0.0 );\n\tvec3 multiScattering = vec3( 0.0 );\n\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\n\tBRDF_Specular_Multiscattering_Environment( geometry, material.specularColor, material.specularRoughness, singleScattering, multiScattering );\n\tvec3 diffuse = material.diffuseColor * ( 1.0 - ( singleScattering + multiScattering ) );\n\treflectedLight.indirectSpecular += clearcoatInv * radiance * singleScattering;\n\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\n\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}";
var lights_fragment_begin = "\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\n#ifdef CLEARCOAT\n\tgeometry.clearcoatNormal = clearcoatNormal;\n#endif\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointDirectLightIrradiance( pointLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\n\t\tpointLightShadow = pointLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotDirectLightIrradiance( spotLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\tspotLightShadow = spotLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalDirectLightIrradiance( directionalLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\n\t\tdirectionalLightShadow = directionalLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 iblIrradiance = vec3( 0.0 );\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\tirradiance += getLightProbeIrradiance( lightProbe, geometry );\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t}\n\t\t#pragma unroll_loop_end\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearcoatRadiance = vec3( 0.0 );\n#endif";
var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\tvec3 lightMapIrradiance = lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tlightMapIrradiance *= PI;\n\t\t#endif\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tiblIrradiance += getLightProbeIndirectIrradiance( geometry, maxMipLevel );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.normal, material.specularRoughness, maxMipLevel );\n\t#ifdef CLEARCOAT\n\t\tclearcoatRadiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness, maxMipLevel );\n\t#endif\n#endif";
var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\n#endif";
var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif";
var logdepthbuf_pars_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tuniform float logDepthBufFC;\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif";
var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t\tvarying float vIsPerspective;\n\t#else\n\t\tuniform float logDepthBufFC;\n\t#endif\n#endif";
var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n\t#else\n\t\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\n\t\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\t\tgl_Position.z *= gl_Position.w;\n\t\t}\n\t#endif\n#endif";
var map_fragment = "#ifdef USE_MAP\n\tvec4 texelColor = texture2D( map, vUv );\n\ttexelColor = mapTexelToLinear( texelColor );\n\tdiffuseColor *= texelColor;\n#endif";
var map_pars_fragment = "#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif";
var map_particle_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n#endif\n#ifdef USE_MAP\n\tvec4 mapTexel = texture2D( map, uv );\n\tdiffuseColor *= mapTexelToLinear( mapTexel );\n#endif\n#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\n#endif";
var map_particle_pars_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tuniform mat3 uvTransform;\n#endif\n#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";
var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif";
var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif";
var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n\tobjectNormal *= morphTargetBaseInfluence;\n\tobjectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\n\tobjectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\n\tobjectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\n\tobjectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\n#endif";
var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n\tuniform float morphTargetBaseInfluence;\n\t#ifndef USE_MORPHNORMALS\n\t\tuniform float morphTargetInfluences[ 8 ];\n\t#else\n\t\tuniform float morphTargetInfluences[ 4 ];\n\t#endif\n#endif";
var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n\ttransformed *= morphTargetBaseInfluence;\n\ttransformed += morphTarget0 * morphTargetInfluences[ 0 ];\n\ttransformed += morphTarget1 * morphTargetInfluences[ 1 ];\n\ttransformed += morphTarget2 * morphTargetInfluences[ 2 ];\n\ttransformed += morphTarget3 * morphTargetInfluences[ 3 ];\n\t#ifndef USE_MORPHNORMALS\n\t\ttransformed += morphTarget4 * morphTargetInfluences[ 4 ];\n\t\ttransformed += morphTarget5 * morphTargetInfluences[ 5 ];\n\t\ttransformed += morphTarget6 * morphTargetInfluences[ 6 ];\n\t\ttransformed += morphTarget7 * morphTargetInfluences[ 7 ];\n\t#endif\n#endif";
var normal_fragment_begin = "#ifdef FLAT_SHADED\n\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\n\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t#endif\n\t#ifdef USE_TANGENT\n\t\tvec3 tangent = normalize( vTangent );\n\t\tvec3 bitangent = normalize( vBitangent );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\ttangent = tangent * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\t\tbitangent = bitangent * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\t#endif\n\t\t#if defined( TANGENTSPACE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP )\n\t\t\tmat3 vTBN = mat3( tangent, bitangent, normal );\n\t\t#endif\n\t#endif\n#endif\nvec3 geometryNormal = normal;";
var normal_fragment_maps = "#ifdef OBJECTSPACE_NORMALMAP\n\tnormal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t#ifdef FLIP_SIDED\n\t\tnormal = - normal;\n\t#endif\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t#endif\n\tnormal = normalize( normalMatrix * normal );\n#elif defined( TANGENTSPACE_NORMALMAP )\n\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\tmapN.xy *= normalScale;\n\t#ifdef USE_TANGENT\n\t\tnormal = normalize( vTBN * mapN );\n\t#else\n\t\tnormal = perturbNormal2Arb( -vViewPosition, normal, mapN );\n\t#endif\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd() );\n#endif";
var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n#endif\n#ifdef OBJECTSPACE_NORMALMAP\n\tuniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( TANGENTSPACE_NORMALMAP ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\n\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm, vec3 mapN ) {\n\t\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\n\t\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\n\t\tvec2 st0 = dFdx( vUv.st );\n\t\tvec2 st1 = dFdy( vUv.st );\n\t\tfloat scale = sign( st1.t * st0.s - st0.t * st1.s );\n\t\tvec3 S = normalize( ( q0 * st1.t - q1 * st0.t ) * scale );\n\t\tvec3 T = normalize( ( - q0 * st1.s + q1 * st0.s ) * scale );\n\t\tvec3 N = normalize( surf_norm );\n\t\tmat3 tsn = mat3( S, T, N );\n\t\tmapN.xy *= ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\treturn normalize( tsn * mapN );\n\t}\n#endif";
var clearcoat_normal_fragment_begin = "#ifdef CLEARCOAT\n\tvec3 clearcoatNormal = geometryNormal;\n#endif";
var clearcoat_normal_fragment_maps = "#ifdef USE_CLEARCOAT_NORMALMAP\n\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vUv ).xyz * 2.0 - 1.0;\n\tclearcoatMapN.xy *= clearcoatNormalScale;\n\t#ifdef USE_TANGENT\n\t\tclearcoatNormal = normalize( vTBN * clearcoatMapN );\n\t#else\n\t\tclearcoatNormal = perturbNormal2Arb( - vViewPosition, clearcoatNormal, clearcoatMapN );\n\t#endif\n#endif";
var clearcoat_pars_fragment = "#ifdef USE_CLEARCOATMAP\n\tuniform sampler2D clearcoatMap;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform sampler2D clearcoatRoughnessMap;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform sampler2D clearcoatNormalMap;\n\tuniform vec2 clearcoatNormalScale;\n#endif";
var packing = "vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n\tvec4 r = vec4( fract( v * PackFactors ), v );\n\tr.yzw -= r.xyz * ShiftRight8;\treturn r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors );\n}\nvec4 pack2HalfToRGBA( vec2 v ) {\n\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ));\n\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w);\n}\nvec2 unpackRGBATo2Half( vec4 v ) {\n\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\n\treturn linearClipZ * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn (( near + viewZ ) * far ) / (( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\n}";
var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif";
var project_vertex = "vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_INSTANCING\n\tmvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;";
var dithering_fragment = "#ifdef DITHERING\n\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif";
var dithering_pars_fragment = "#ifdef DITHERING\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif";
var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\n\troughnessFactor *= texelRoughness.g;\n#endif";
var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif";
var shadowmap_pars_fragment = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\n\t\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\n\t}\n\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\n\t\tfloat occlusion = 1.0;\n\t\tvec2 distribution = texture2DDistribution( shadow, uv );\n\t\tfloat hard_shadow = step( compare , distribution.x );\n\t\tif (hard_shadow != 1.0 ) {\n\t\t\tfloat distance = compare - distribution.x ;\n\t\t\tfloat variance = max( 0.00000, distribution.y * distribution.y );\n\t\t\tfloat softness_probability = variance / (variance + distance * distance );\t\t\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\t\t\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\n\t\t}\n\t\treturn occlusion;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n\t\tbool inFrustum = all( inFrustumVec );\n\t\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n\t\tbool frustumTest = all( frustumTestVec );\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tfloat dx2 = dx0 / 2.0;\n\t\t\tfloat dy2 = dy0 / 2.0;\n\t\t\tfloat dx3 = dx1 / 2.0;\n\t\t\tfloat dy3 = dy1 / 2.0;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 17.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx = texelSize.x;\n\t\t\tfloat dy = texelSize.y;\n\t\t\tvec2 uv = shadowCoord.xy;\n\t\t\tvec2 f = fract( uv * shadowMapSize + 0.5 );\n\t\t\tuv -= f * texelSize;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t\t  f.x ),\n\t\t\t\t\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ), \n\t\t\t\t\t\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t\t  f.x ),\n\t\t\t\t\t f.y )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_VSM )\n\t\t\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn shadow;\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\tdp += shadowBias;\n\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\n\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\treturn (\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t#endif\n\t}\n#endif";
var shadowmap_pars_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n#endif";
var shadowmap_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0 || NUM_SPOT_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0\n\t\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\tvec4 shadowWorldPosition;\n\t#endif\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n#endif";
var shadowmask_pars_fragment = "float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tdirectionalLight = directionalLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tspotLight = spotLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tpointLight = pointLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#endif\n\treturn shadow;\n}";
var skinbase_vertex = "#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";
var skinning_pars_vertex = "#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\t#ifdef BONE_TEXTURE\n\t\tuniform highp sampler2D boneTexture;\n\t\tuniform int boneTextureSize;\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tfloat j = i * 4.0;\n\t\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\t\ty = dy * ( y + 0.5 );\n\t\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\t\treturn bone;\n\t\t}\n\t#else\n\t\tuniform mat4 boneMatrices[ MAX_BONES ];\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tmat4 bone = boneMatrices[ int(i) ];\n\t\t\treturn bone;\n\t\t}\n\t#endif\n#endif";
var skinning_vertex = "#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif";
var skinnormal_vertex = "#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n\t#ifdef USE_TANGENT\n\t\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#endif\n#endif";
var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif";
var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif";
var tonemapping_fragment = "#if defined( TONE_MAPPING )\n\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif";
var tonemapping_pars_fragment = "#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn toneMappingExposure * color;\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\nvec3 RRTAndODTFit( vec3 v ) {\n\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\n\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\n\treturn a / b;\n}\nvec3 ACESFilmicToneMapping( vec3 color ) {\n\tconst mat3 ACESInputMat = mat3(\n\t\tvec3( 0.59719, 0.07600, 0.02840 ),\t\tvec3( 0.35458, 0.90834, 0.13383 ),\n\t\tvec3( 0.04823, 0.01566, 0.83777 )\n\t);\n\tconst mat3 ACESOutputMat = mat3(\n\t\tvec3(  1.60475, -0.10208, -0.00327 ),\t\tvec3( -0.53108,  1.10813, -0.07276 ),\n\t\tvec3( -0.07367, -0.00605,  1.07602 )\n\t);\n\tcolor *= toneMappingExposure / 0.6;\n\tcolor = ACESInputMat * color;\n\tcolor = RRTAndODTFit( color );\n\tcolor = ACESOutputMat * color;\n\treturn saturate( color );\n}\nvec3 CustomToneMapping( vec3 color ) { return color; }";
var transmissionmap_fragment = "#ifdef USE_TRANSMISSIONMAP\n\ttotalTransmission *= texture2D( transmissionMap, vUv ).r;\n#endif";
var transmissionmap_pars_fragment = "#ifdef USE_TRANSMISSIONMAP\n\tuniform sampler2D transmissionMap;\n#endif";
var uv_pars_fragment = "#if ( defined( USE_UV ) && ! defined( UVS_VERTEX_ONLY ) )\n\tvarying vec2 vUv;\n#endif";
var uv_pars_vertex = "#ifdef USE_UV\n\t#ifdef UVS_VERTEX_ONLY\n\t\tvec2 vUv;\n\t#else\n\t\tvarying vec2 vUv;\n\t#endif\n\tuniform mat3 uvTransform;\n#endif";
var uv_vertex = "#ifdef USE_UV\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n#endif";
var uv2_pars_fragment = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvarying vec2 vUv2;\n#endif";
var uv2_pars_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tattribute vec2 uv2;\n\tvarying vec2 vUv2;\n\tuniform mat3 uv2Transform;\n#endif";
var uv2_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvUv2 = ( uv2Transform * vec3( uv2, 1 ) ).xy;\n#endif";
var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP )\n\tvec4 worldPosition = vec4( transformed, 1.0 );\n\t#ifdef USE_INSTANCING\n\t\tworldPosition = instanceMatrix * worldPosition;\n\t#endif\n\tworldPosition = modelMatrix * worldPosition;\n#endif";
var background_frag = "uniform sampler2D t2D;\nvarying vec2 vUv;\nvoid main() {\n\tvec4 texColor = texture2D( t2D, vUv );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
var background_vert = "varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\tgl_Position = vec4( position.xy, 1.0, 1.0 );\n}";
var cube_frag = "#include <envmap_common_pars_fragment>\nuniform float opacity;\nvarying vec3 vWorldDirection;\n#include <cube_uv_reflection_fragment>\nvoid main() {\n\tvec3 vReflect = vWorldDirection;\n\t#include <envmap_fragment>\n\tgl_FragColor = envColor;\n\tgl_FragColor.a *= opacity;\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
var cube_vert = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}";
var depth_frag = "#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <logdepthbuf_fragment>\n\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( fragCoordZ );\n\t#endif\n}";
var depth_vert = "#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvHighPrecisionZW = gl_Position.zw;\n}";
var distanceRGBA_frag = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}";
var distanceRGBA_vert = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}";
var equirect_frag = "uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldDirection );\n\tvec2 sampleUV = equirectUv( direction );\n\tvec4 texColor = texture2D( tEquirect, sampleUV );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
var equirect_vert = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}";
var linedashed_frag = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";
var linedashed_vert = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\tvLineDistance = scale * lineDistance;\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
var meshbasic_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\treflectedLight.indirectDiffuse += lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
var meshbasic_vert = "#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_ENVMAP\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}";
var meshlambert_frag = "uniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <fog_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <emissivemap_fragment>\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.indirectDiffuse += ( gl_FrontFacing ) ? vIndirectFront : vIndirectBack;\n\t#else\n\t\treflectedLight.indirectDiffuse += vIndirectFront;\n\t#endif\n\t#include <lightmap_fragment>\n\treflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\n\t#else\n\t\treflectedLight.directDiffuse = vLightFront;\n\t#endif\n\treflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
var meshlambert_vert = "#define LAMBERT\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <lights_lambert_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
var meshmatcap_frag = "#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tvec3 viewDir = normalize( vViewPosition );\n\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\n\tvec3 y = cross( viewDir, x );\n\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\n\t#ifdef USE_MATCAP\n\t\tvec4 matcapColor = texture2D( matcap, uv );\n\t\tmatcapColor = matcapTexelToLinear( matcapColor );\n\t#else\n\t\tvec4 matcapColor = vec4( 1.0 );\n\t#endif\n\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
var meshmatcap_vert = "#define MATCAP\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#ifndef FLAT_SHADED\n\t\tvNormal = normalize( transformedNormal );\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n\tvViewPosition = - mvPosition.xyz;\n}";
var meshtoon_frag = "#define TOON\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_toon_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_toon_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
var meshtoon_vert = "#define TOON\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
var meshphong_frag = "#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
var meshphong_vert = "#define PHONG\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
var meshphysical_frag = "#define STANDARD\n#ifdef PHYSICAL\n\t#define REFLECTIVITY\n\t#define CLEARCOAT\n\t#define TRANSMISSION\n#endif\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifdef TRANSMISSION\n\tuniform float transmission;\n#endif\n#ifdef REFLECTIVITY\n\tuniform float reflectivity;\n#endif\n#ifdef CLEARCOAT\n\tuniform float clearcoat;\n\tuniform float clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tuniform vec3 sheen;\n#endif\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <transmissionmap_pars_fragment>\n#include <bsdfs>\n#include <cube_uv_reflection_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_physical_pars_fragment>\n#include <fog_pars_fragment>\n#include <lights_pars_begin>\n#include <lights_physical_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <clearcoat_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#ifdef TRANSMISSION\n\t\tfloat totalTransmission = transmission;\n\t#endif\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <clearcoat_normal_fragment_begin>\n\t#include <clearcoat_normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <transmissionmap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#ifdef TRANSMISSION\n\t\tdiffuseColor.a *= saturate( 1. - totalTransmission + linearToRelativeLuminance( reflectedLight.directSpecular + reflectedLight.indirectSpecular ) );\n\t#endif\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
var meshphysical_vert = "#define STANDARD\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
var normal_frag = "#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n}";
var normal_vert = "#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}";
var points_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";
var points_vert = "uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\tgl_PointSize = size;\n\t#ifdef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <fog_vertex>\n}";
var shadow_frag = "uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";
var shadow_vert = "#include <common>\n#include <fog_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
var sprite_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";
var sprite_vert = "uniform float rotation;\nuniform vec2 center;\n#include <common>\n#include <uv_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\n\tvec2 scale;\n\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\n\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\n\t#ifndef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) scale *= - mvPosition.z;\n\t#endif\n\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\n\tvec2 rotatedPosition;\n\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\n\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\n\tmvPosition.xy += rotatedPosition;\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
const ShaderChunk = {
	alphamap_fragment: alphamap_fragment,
	alphamap_pars_fragment: alphamap_pars_fragment,
	alphatest_fragment: alphatest_fragment,
	aomap_fragment: aomap_fragment,
	aomap_pars_fragment: aomap_pars_fragment,
	begin_vertex: begin_vertex,
	beginnormal_vertex: beginnormal_vertex,
	bsdfs: bsdfs,
	bumpmap_pars_fragment: bumpmap_pars_fragment,
	clipping_planes_fragment: clipping_planes_fragment,
	clipping_planes_pars_fragment: clipping_planes_pars_fragment,
	clipping_planes_pars_vertex: clipping_planes_pars_vertex,
	clipping_planes_vertex: clipping_planes_vertex,
	color_fragment: color_fragment,
	color_pars_fragment: color_pars_fragment,
	color_pars_vertex: color_pars_vertex,
	color_vertex: color_vertex,
	common: common,
	cube_uv_reflection_fragment: cube_uv_reflection_fragment,
	defaultnormal_vertex: defaultnormal_vertex,
	displacementmap_pars_vertex: displacementmap_pars_vertex,
	displacementmap_vertex: displacementmap_vertex,
	emissivemap_fragment: emissivemap_fragment,
	emissivemap_pars_fragment: emissivemap_pars_fragment,
	encodings_fragment: encodings_fragment,
	encodings_pars_fragment: encodings_pars_fragment,
	envmap_fragment: envmap_fragment,
	envmap_common_pars_fragment: envmap_common_pars_fragment,
	envmap_pars_fragment: envmap_pars_fragment,
	envmap_pars_vertex: envmap_pars_vertex,
	envmap_physical_pars_fragment: envmap_physical_pars_fragment,
	envmap_vertex: envmap_vertex,
	fog_vertex: fog_vertex,
	fog_pars_vertex: fog_pars_vertex,
	fog_fragment: fog_fragment,
	fog_pars_fragment: fog_pars_fragment,
	gradientmap_pars_fragment: gradientmap_pars_fragment,
	lightmap_fragment: lightmap_fragment,
	lightmap_pars_fragment: lightmap_pars_fragment,
	lights_lambert_vertex: lights_lambert_vertex,
	lights_pars_begin: lights_pars_begin,
	lights_toon_fragment: lights_toon_fragment,
	lights_toon_pars_fragment: lights_toon_pars_fragment,
	lights_phong_fragment: lights_phong_fragment,
	lights_phong_pars_fragment: lights_phong_pars_fragment,
	lights_physical_fragment: lights_physical_fragment,
	lights_physical_pars_fragment: lights_physical_pars_fragment,
	lights_fragment_begin: lights_fragment_begin,
	lights_fragment_maps: lights_fragment_maps,
	lights_fragment_end: lights_fragment_end,
	logdepthbuf_fragment: logdepthbuf_fragment,
	logdepthbuf_pars_fragment: logdepthbuf_pars_fragment,
	logdepthbuf_pars_vertex: logdepthbuf_pars_vertex,
	logdepthbuf_vertex: logdepthbuf_vertex,
	map_fragment: map_fragment,
	map_pars_fragment: map_pars_fragment,
	map_particle_fragment: map_particle_fragment,
	map_particle_pars_fragment: map_particle_pars_fragment,
	metalnessmap_fragment: metalnessmap_fragment,
	metalnessmap_pars_fragment: metalnessmap_pars_fragment,
	morphnormal_vertex: morphnormal_vertex,
	morphtarget_pars_vertex: morphtarget_pars_vertex,
	morphtarget_vertex: morphtarget_vertex,
	normal_fragment_begin: normal_fragment_begin,
	normal_fragment_maps: normal_fragment_maps,
	normalmap_pars_fragment: normalmap_pars_fragment,
	clearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,
	clearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,
	clearcoat_pars_fragment: clearcoat_pars_fragment,
	packing: packing,
	premultiplied_alpha_fragment: premultiplied_alpha_fragment,
	project_vertex: project_vertex,
	dithering_fragment: dithering_fragment,
	dithering_pars_fragment: dithering_pars_fragment,
	roughnessmap_fragment: roughnessmap_fragment,
	roughnessmap_pars_fragment: roughnessmap_pars_fragment,
	shadowmap_pars_fragment: shadowmap_pars_fragment,
	shadowmap_pars_vertex: shadowmap_pars_vertex,
	shadowmap_vertex: shadowmap_vertex,
	shadowmask_pars_fragment: shadowmask_pars_fragment,
	skinbase_vertex: skinbase_vertex,
	skinning_pars_vertex: skinning_pars_vertex,
	skinning_vertex: skinning_vertex,
	skinnormal_vertex: skinnormal_vertex,
	specularmap_fragment: specularmap_fragment,
	specularmap_pars_fragment: specularmap_pars_fragment,
	tonemapping_fragment: tonemapping_fragment,
	tonemapping_pars_fragment: tonemapping_pars_fragment,
	transmissionmap_fragment: transmissionmap_fragment,
	transmissionmap_pars_fragment: transmissionmap_pars_fragment,
	uv_pars_fragment: uv_pars_fragment,
	uv_pars_vertex: uv_pars_vertex,
	uv_vertex: uv_vertex,
	uv2_pars_fragment: uv2_pars_fragment,
	uv2_pars_vertex: uv2_pars_vertex,
	uv2_vertex: uv2_vertex,
	worldpos_vertex: worldpos_vertex,
	background_frag: background_frag,
	background_vert: background_vert,
	cube_frag: cube_frag,
	cube_vert: cube_vert,
	depth_frag: depth_frag,
	depth_vert: depth_vert,
	distanceRGBA_frag: distanceRGBA_frag,
	distanceRGBA_vert: distanceRGBA_vert,
	equirect_frag: equirect_frag,
	equirect_vert: equirect_vert,
	linedashed_frag: linedashed_frag,
	linedashed_vert: linedashed_vert,
	meshbasic_frag: meshbasic_frag,
	meshbasic_vert: meshbasic_vert,
	meshlambert_frag: meshlambert_frag,
	meshlambert_vert: meshlambert_vert,
	meshmatcap_frag: meshmatcap_frag,
	meshmatcap_vert: meshmatcap_vert,
	meshtoon_frag: meshtoon_frag,
	meshtoon_vert: meshtoon_vert,
	meshphong_frag: meshphong_frag,
	meshphong_vert: meshphong_vert,
	meshphysical_frag: meshphysical_frag,
	meshphysical_vert: meshphysical_vert,
	normal_frag: normal_frag,
	normal_vert: normal_vert,
	points_frag: points_frag,
	points_vert: points_vert,
	shadow_frag: shadow_frag,
	shadow_vert: shadow_vert,
	sprite_frag: sprite_frag,
	sprite_vert: sprite_vert
};
const UniformsLib = {
	common: {
		diffuse: { value: new Color( 0xeeeeee ) },
		opacity: { value: 1.0 },
		map: { value: null },
		uvTransform: { value: new Matrix3() },
		uv2Transform: { value: new Matrix3() },
		alphaMap: { value: null },
	},
	specularmap: {
		specularMap: { value: null },
	},
	envmap: {
		envMap: { value: null },
		flipEnvMap: { value: - 1 },
		reflectivity: { value: 1.0 },
		refractionRatio: { value: 0.98 },
		maxMipLevel: { value: 0 }
	},
	aomap: {
		aoMap: { value: null },
		aoMapIntensity: { value: 1 }
	},
	lightmap: {
		lightMap: { value: null },
		lightMapIntensity: { value: 1 }
	},
	emissivemap: {
		emissiveMap: { value: null }
	},
	bumpmap: {
		bumpMap: { value: null },
		bumpScale: { value: 1 }
	},
	normalmap: {
		normalMap: { value: null },
		normalScale: { value: new Vector2( 1, 1 ) }
	},
	displacementmap: {
		displacementMap: { value: null },
		displacementScale: { value: 1 },
		displacementBias: { value: 0 }
	},
	roughnessmap: {
		roughnessMap: { value: null }
	},
	metalnessmap: {
		metalnessMap: { value: null }
	},
	gradientmap: {
		gradientMap: { value: null }
	},
	fog: {
		fogDensity: { value: 0.00025 },
		fogNear: { value: 1 },
		fogFar: { value: 2000 },
		fogColor: { value: new Color( 0xffffff ) }
	},
	lights: {
		ambientLightColor: { value: [] },
		lightProbe: { value: [] },
		directionalLights: { value: [], properties: {
			direction: {},
			color: {}
		} },
		directionalLightShadows: { value: [], properties: {
			shadowBias: {},
			shadowNormalBias: {},
			shadowRadius: {},
			shadowMapSize: {}
		} },
		directionalShadowMap: { value: [] },
		directionalShadowMatrix: { value: [] },
		spotLights: { value: [], properties: {
			color: {},
			position: {},
			direction: {},
			distance: {},
			coneCos: {},
			penumbraCos: {},
			decay: {}
		} },
		spotLightShadows: { value: [], properties: {
			shadowBias: {},
			shadowNormalBias: {},
			shadowRadius: {},
			shadowMapSize: {}
		} },
		spotShadowMap: { value: [] },
		spotShadowMatrix: { value: [] },
		pointLights: { value: [], properties: {
			color: {},
			position: {},
			decay: {},
			distance: {}
		} },
		pointLightShadows: { value: [], properties: {
			shadowBias: {},
			shadowNormalBias: {},
			shadowRadius: {},
			shadowMapSize: {},
			shadowCameraNear: {},
			shadowCameraFar: {}
		} },
		pointShadowMap: { value: [] },
		pointShadowMatrix: { value: [] },
		hemisphereLights: { value: [], properties: {
			direction: {},
			skyColor: {},
			groundColor: {}
		} },
		rectAreaLights: { value: [], properties: {
			color: {},
			position: {},
			width: {},
			height: {}
		} },
		ltc_1: { value: null },
		ltc_2: { value: null }
	},
	points: {
		diffuse: { value: new Color( 0xeeeeee ) },
		opacity: { value: 1.0 },
		size: { value: 1.0 },
		scale: { value: 1.0 },
		map: { value: null },
		alphaMap: { value: null },
		uvTransform: { value: new Matrix3() }
	},
	sprite: {
		diffuse: { value: new Color( 0xeeeeee ) },
		opacity: { value: 1.0 },
		center: { value: new Vector2( 0.5, 0.5 ) },
		rotation: { value: 0.0 },
		map: { value: null },
		alphaMap: { value: null },
		uvTransform: { value: new Matrix3() }
	}
};
const ShaderLib = {
	basic: {
		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.specularmap,
			UniformsLib.envmap,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.fog
		] ),
		vertexShader: ShaderChunk.meshbasic_vert,
		fragmentShader: ShaderChunk.meshbasic_frag
	},
	lambert: {
		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.specularmap,
			UniformsLib.envmap,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.emissivemap,
			UniformsLib.fog,
			UniformsLib.lights,
			{
				emissive: { value: new Color( 0x000000 ) }
			}
		] ),
		vertexShader: ShaderChunk.meshlambert_vert,
		fragmentShader: ShaderChunk.meshlambert_frag
	},
	phong: {
		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.specularmap,
			UniformsLib.envmap,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.emissivemap,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.fog,
			UniformsLib.lights,
			{
				emissive: { value: new Color( 0x000000 ) },
				specular: { value: new Color( 0x111111 ) },
				shininess: { value: 30 }
			}
		] ),
		vertexShader: ShaderChunk.meshphong_vert,
		fragmentShader: ShaderChunk.meshphong_frag
	},
	standard: {
		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.envmap,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.emissivemap,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.roughnessmap,
			UniformsLib.metalnessmap,
			UniformsLib.fog,
			UniformsLib.lights,
			{
				emissive: { value: new Color( 0x000000 ) },
				roughness: { value: 1.0 },
				metalness: { value: 0.0 },
				envMapIntensity: { value: 1 }
			}
		] ),
		vertexShader: ShaderChunk.meshphysical_vert,
		fragmentShader: ShaderChunk.meshphysical_frag
	},
	toon: {
		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.emissivemap,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.gradientmap,
			UniformsLib.fog,
			UniformsLib.lights,
			{
				emissive: { value: new Color( 0x000000 ) }
			}
		] ),
		vertexShader: ShaderChunk.meshtoon_vert,
		fragmentShader: ShaderChunk.meshtoon_frag
	},
	matcap: {
		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.fog,
			{
				matcap: { value: null }
			}
		] ),
		vertexShader: ShaderChunk.meshmatcap_vert,
		fragmentShader: ShaderChunk.meshmatcap_frag
	},
	points: {
		uniforms: mergeUniforms( [
			UniformsLib.points,
			UniformsLib.fog
		] ),
		vertexShader: ShaderChunk.points_vert,
		fragmentShader: ShaderChunk.points_frag
	},
	dashed: {
		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.fog,
			{
				scale: { value: 1 },
				dashSize: { value: 1 },
				totalSize: { value: 2 }
			}
		] ),
		vertexShader: ShaderChunk.linedashed_vert,
		fragmentShader: ShaderChunk.linedashed_frag
	},
	depth: {
		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.displacementmap
		] ),
		vertexShader: ShaderChunk.depth_vert,
		fragmentShader: ShaderChunk.depth_frag
	},
	normal: {
		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			{
				opacity: { value: 1.0 }
			}
		] ),
		vertexShader: ShaderChunk.normal_vert,
		fragmentShader: ShaderChunk.normal_frag
	},
	sprite: {
		uniforms: mergeUniforms( [
			UniformsLib.sprite,
			UniformsLib.fog
		] ),
		vertexShader: ShaderChunk.sprite_vert,
		fragmentShader: ShaderChunk.sprite_frag
	},
	background: {
		uniforms: {
			uvTransform: { value: new Matrix3() },
			t2D: { value: null },
		},
		vertexShader: ShaderChunk.background_vert,
		fragmentShader: ShaderChunk.background_frag
	},
	cube: {
		uniforms: mergeUniforms( [
			UniformsLib.envmap,
			{
				opacity: { value: 1.0 }
			}
		] ),
		vertexShader: ShaderChunk.cube_vert,
		fragmentShader: ShaderChunk.cube_frag
	},
	equirect: {
		uniforms: {
			tEquirect: { value: null },
		},
		vertexShader: ShaderChunk.equirect_vert,
		fragmentShader: ShaderChunk.equirect_frag
	},
	distanceRGBA: {
		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.displacementmap,
			{
				referencePosition: { value: new Vector3() },
				nearDistance: { value: 1 },
				farDistance: { value: 1000 }
			}
		] ),
		vertexShader: ShaderChunk.distanceRGBA_vert,
		fragmentShader: ShaderChunk.distanceRGBA_frag
	},
	shadow: {
		uniforms: mergeUniforms( [
			UniformsLib.lights,
			UniformsLib.fog,
			{
				color: { value: new Color( 0x00000 ) },
				opacity: { value: 1.0 }
			},
		] ),
		vertexShader: ShaderChunk.shadow_vert,
		fragmentShader: ShaderChunk.shadow_frag
	}
};
ShaderLib.physical = {
	uniforms: mergeUniforms( [
		ShaderLib.standard.uniforms,
		{
			clearcoat: { value: 0 },
			clearcoatMap: { value: null },
			clearcoatRoughness: { value: 0 },
			clearcoatRoughnessMap: { value: null },
			clearcoatNormalScale: { value: new Vector2( 1, 1 ) },
			clearcoatNormalMap: { value: null },
			sheen: { value: new Color( 0x000000 ) },
			transmission: { value: 0 },
			transmissionMap: { value: null },
		}
	] ),
	vertexShader: ShaderChunk.meshphysical_vert,
	fragmentShader: ShaderChunk.meshphysical_frag
};
function WebGLBackground( renderer, cubemaps, state, objects, premultipliedAlpha ) {
	const clearColor = new Color( 0x000000 );
	let clearAlpha = 0;
	let planeMesh;
	let boxMesh;
	let currentBackground = null;
	let currentBackgroundVersion = 0;
	let currentTonemapping = null;
	function render( renderList, scene, camera, forceClear ) {
		let background = scene.isScene === true ? scene.background : null;
		if ( background && background.isTexture ) {
			background = cubemaps.get( background );
		}
		const xr = renderer.xr;
		const session = xr.getSession && xr.getSession();
		if ( session && session.environmentBlendMode === 'additive' ) {
			background = null;
		}
		if ( background === null ) {
			setClear( clearColor, clearAlpha );
		} else if ( background && background.isColor ) {
			setClear( background, 1 );
			forceClear = true;
		}
		if ( renderer.autoClear || forceClear ) {
			renderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );
		}
		if ( background && ( background.isCubeTexture || background.isWebGLCubeRenderTarget || background.isWebGLCubeRenderTargetTexture || background.mapping === CubeUVReflectionMapping ) ) {
			if ( boxMesh === undefined ) {
				boxMesh = new Mesh(
					new BoxBufferGeometry( 1, 1, 1 ),
					new ShaderMaterial( {
						name: 'BackgroundCubeMaterial',
						uniforms: cloneUniforms( ShaderLib.cube.uniforms ),
						vertexShader: ShaderLib.cube.vertexShader,
						fragmentShader: ShaderLib.cube.fragmentShader,
						side: BackSide,
						depthTest: false,
						depthWrite: false,
						fog: false
					} )
				);
				boxMesh.geometry.deleteAttribute( 'normal' );
				boxMesh.geometry.deleteAttribute( 'uv' );
				boxMesh.onBeforeRender = function ( renderer, scene, camera ) {
					this.matrixWorld.copyPosition( camera.matrixWorld );
				};
				Object.defineProperty( boxMesh.material, 'envMap', {
					get: function () {
						return this.uniforms.envMap.value;
					}
				} );
				objects.update( boxMesh );
			}
			if ( background.isWebGLCubeRenderTarget ) {
				background = background.texture;
			}
			boxMesh.material.uniforms.envMap.value = background;
			boxMesh.material.uniforms.flipEnvMap.value = background.isCubeTexture ? - 1 : 1;
			if ( currentBackground !== background ||
				currentBackgroundVersion !== background.version ||
				currentTonemapping !== renderer.toneMapping ) {
				boxMesh.material.needsUpdate = true;
				currentBackground = background;
				currentBackgroundVersion = background.version;
				currentTonemapping = renderer.toneMapping;
			}
			renderList.unshift( boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null );
		} else if ( background && background.isTexture ) {
			if ( planeMesh === undefined ) {
				planeMesh = new Mesh(
					new PlaneBufferGeometry( 2, 2 ),
					new ShaderMaterial( {
						name: 'BackgroundMaterial',
						uniforms: cloneUniforms( ShaderLib.background.uniforms ),
						vertexShader: ShaderLib.background.vertexShader,
						fragmentShader: ShaderLib.background.fragmentShader,
						side: FrontSide,
						depthTest: false,
						depthWrite: false,
						fog: false
					} )
				);
				planeMesh.geometry.deleteAttribute( 'normal' );
				Object.defineProperty( planeMesh.material, 'map', {
					get: function () {
						return this.uniforms.t2D.value;
					}
				} );
				objects.update( planeMesh );
			}
			planeMesh.material.uniforms.t2D.value = background;
			if ( background.matrixAutoUpdate === true ) {
				background.updateMatrix();
			}
			planeMesh.material.uniforms.uvTransform.value.copy( background.matrix );
			if ( currentBackground !== background ||
				currentBackgroundVersion !== background.version ||
				currentTonemapping !== renderer.toneMapping ) {
				planeMesh.material.needsUpdate = true;
				currentBackground = background;
				currentBackgroundVersion = background.version;
				currentTonemapping = renderer.toneMapping;
			}
			renderList.unshift( planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null );
		}
	}
	function setClear( color, alpha ) {
		state.buffers.color.setClear( color.r, color.g, color.b, alpha, premultipliedAlpha );
	}
	return {
		getClearColor: function () {
			return clearColor;
		},
		setClearColor: function ( color, alpha ) {
			clearColor.set( color );
			clearAlpha = alpha !== undefined ? alpha : 1;
			setClear( clearColor, clearAlpha );
		},
		getClearAlpha: function () {
			return clearAlpha;
		},
		setClearAlpha: function ( alpha ) {
			clearAlpha = alpha;
			setClear( clearColor, clearAlpha );
		},
		render: render
	};
}
function WebGLBindingStates( gl, extensions, attributes, capabilities ) {
	const maxVertexAttributes = gl.getParameter( 34921 );
	const extension = capabilities.isWebGL2 ? null : extensions.get( 'OES_vertex_array_object' );
	const vaoAvailable = capabilities.isWebGL2 || extension !== null;
	const bindingStates = {};
	const defaultState = createBindingState( null );
	let currentState = defaultState;
	function setup( object, material, program, geometry, index ) {
		let updateBuffers = false;
		if ( vaoAvailable ) {
			const state = getBindingState( geometry, program, material );
			if ( currentState !== state ) {
				currentState = state;
				bindVertexArrayObject( currentState.object );
			}
			updateBuffers = needsUpdate( geometry, index );
			if ( updateBuffers ) saveCache( geometry, index );
		} else {
			const wireframe = ( material.wireframe === true );
			if ( currentState.geometry !== geometry.id ||
				currentState.program !== program.id ||
				currentState.wireframe !== wireframe ) {
				currentState.geometry = geometry.id;
				currentState.program = program.id;
				currentState.wireframe = wireframe;
				updateBuffers = true;
			}
		}
		if ( object.isInstancedMesh === true ) {
			updateBuffers = true;
		}
		if ( index !== null ) {
			attributes.update( index, 34963 );
		}
		if ( updateBuffers ) {
			setupVertexAttributes( object, material, program, geometry );
			if ( index !== null ) {
				gl.bindBuffer( 34963, attributes.get( index ).buffer );
			}
		}
	}
	function createVertexArrayObject() {
		if ( capabilities.isWebGL2 ) return gl.createVertexArray();
		return extension.createVertexArrayOES();
	}
	function bindVertexArrayObject( vao ) {
		if ( capabilities.isWebGL2 ) return gl.bindVertexArray( vao );
		return extension.bindVertexArrayOES( vao );
	}
	function deleteVertexArrayObject( vao ) {
		if ( capabilities.isWebGL2 ) return gl.deleteVertexArray( vao );
		return extension.deleteVertexArrayOES( vao );
	}
	function getBindingState( geometry, program, material ) {
		const wireframe = ( material.wireframe === true );
		let programMap = bindingStates[ geometry.id ];
		if ( programMap === undefined ) {
			programMap = {};
			bindingStates[ geometry.id ] = programMap;
		}
		let stateMap = programMap[ program.id ];
		if ( stateMap === undefined ) {
			stateMap = {};
			programMap[ program.id ] = stateMap;
		}
		let state = stateMap[ wireframe ];
		if ( state === undefined ) {
			state = createBindingState( createVertexArrayObject() );
			stateMap[ wireframe ] = state;
		}
		return state;
	}
	function createBindingState( vao ) {
		const newAttributes = [];
		const enabledAttributes = [];
		const attributeDivisors = [];
		for ( let i = 0; i < maxVertexAttributes; i ++ ) {
			newAttributes[ i ] = 0;
			enabledAttributes[ i ] = 0;
			attributeDivisors[ i ] = 0;
		}
		return {
			geometry: null,
			program: null,
			wireframe: false,
			newAttributes: newAttributes,
			enabledAttributes: enabledAttributes,
			attributeDivisors: attributeDivisors,
			object: vao,
			attributes: {},
			index: null
		};
	}
	function needsUpdate( geometry, index ) {
		const cachedAttributes = currentState.attributes;
		const geometryAttributes = geometry.attributes;
		if ( Object.keys( cachedAttributes ).length !== Object.keys( geometryAttributes ).length ) return true;
		for ( const key in geometryAttributes ) {
			const cachedAttribute = cachedAttributes[ key ];
			const geometryAttribute = geometryAttributes[ key ];
			if ( cachedAttribute === undefined ) return true;
			if ( cachedAttribute.attribute !== geometryAttribute ) return true;
			if ( cachedAttribute.data !== geometryAttribute.data ) return true;
		}
		if ( currentState.index !== index ) return true;
		return false;
	}
	function saveCache( geometry, index ) {
		const cache = {};
		const attributes = geometry.attributes;
		for ( const key in attributes ) {
			const attribute = attributes[ key ];
			const data = {};
			data.attribute = attribute;
			if ( attribute.data ) {
				data.data = attribute.data;
			}
			cache[ key ] = data;
		}
		currentState.attributes = cache;
		currentState.index = index;
	}
	function initAttributes() {
		const newAttributes = currentState.newAttributes;
		for ( let i = 0, il = newAttributes.length; i < il; i ++ ) {
			newAttributes[ i ] = 0;
		}
	}
	function enableAttribute( attribute ) {
		enableAttributeAndDivisor( attribute, 0 );
	}
	function enableAttributeAndDivisor( attribute, meshPerAttribute ) {
		const newAttributes = currentState.newAttributes;
		const enabledAttributes = currentState.enabledAttributes;
		const attributeDivisors = currentState.attributeDivisors;
		newAttributes[ attribute ] = 1;
		if ( enabledAttributes[ attribute ] === 0 ) {
			gl.enableVertexAttribArray( attribute );
			enabledAttributes[ attribute ] = 1;
		}
		if ( attributeDivisors[ attribute ] !== meshPerAttribute ) {
			const extension = capabilities.isWebGL2 ? gl : extensions.get( 'ANGLE_instanced_arrays' );
			extension[ capabilities.isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE' ]( attribute, meshPerAttribute );
			attributeDivisors[ attribute ] = meshPerAttribute;
		}
	}
	function disableUnusedAttributes() {
		const newAttributes = currentState.newAttributes;
		const enabledAttributes = currentState.enabledAttributes;
		for ( let i = 0, il = enabledAttributes.length; i < il; i ++ ) {
			if ( enabledAttributes[ i ] !== newAttributes[ i ] ) {
				gl.disableVertexAttribArray( i );
				enabledAttributes[ i ] = 0;
			}
		}
	}
	function vertexAttribPointer( index, size, type, normalized, stride, offset ) {
		if ( capabilities.isWebGL2 === true && ( type === 5124 || type === 5125 ) ) {
			gl.vertexAttribIPointer( index, size, type, stride, offset );
		} else {
			gl.vertexAttribPointer( index, size, type, normalized, stride, offset );
		}
	}
	function setupVertexAttributes( object, material, program, geometry ) {
		if ( capabilities.isWebGL2 === false && ( object.isInstancedMesh || geometry.isInstancedBufferGeometry ) ) {
			if ( extensions.get( 'ANGLE_instanced_arrays' ) === null ) return;
		}
		initAttributes();
		const geometryAttributes = geometry.attributes;
		const programAttributes = program.getAttributes();
		const materialDefaultAttributeValues = material.defaultAttributeValues;
		for ( const name in programAttributes ) {
			const programAttribute = programAttributes[ name ];
			if ( programAttribute >= 0 ) {
				const geometryAttribute = geometryAttributes[ name ];
				if ( geometryAttribute !== undefined ) {
					const normalized = geometryAttribute.normalized;
					const size = geometryAttribute.itemSize;
					const attribute = attributes.get( geometryAttribute );
					if ( attribute === undefined ) continue;
					const buffer = attribute.buffer;
					const type = attribute.type;
					const bytesPerElement = attribute.bytesPerElement;
					if ( geometryAttribute.isInterleavedBufferAttribute ) {
						const data = geometryAttribute.data;
						const stride = data.stride;
						const offset = geometryAttribute.offset;
						if ( data && data.isInstancedInterleavedBuffer ) {
							enableAttributeAndDivisor( programAttribute, data.meshPerAttribute );
							if ( geometry._maxInstanceCount === undefined ) {
								geometry._maxInstanceCount = data.meshPerAttribute * data.count;
							}
						} else {
							enableAttribute( programAttribute );
						}
						gl.bindBuffer( 34962, buffer );
						vertexAttribPointer( programAttribute, size, type, normalized, stride * bytesPerElement, offset * bytesPerElement );
					} else {
						if ( geometryAttribute.isInstancedBufferAttribute ) {
							enableAttributeAndDivisor( programAttribute, geometryAttribute.meshPerAttribute );
							if ( geometry._maxInstanceCount === undefined ) {
								geometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;
							}
						} else {
							enableAttribute( programAttribute );
						}
						gl.bindBuffer( 34962, buffer );
						vertexAttribPointer( programAttribute, size, type, normalized, 0, 0 );
					}
				} else if ( name === 'instanceMatrix' ) {
					const attribute = attributes.get( object.instanceMatrix );
					if ( attribute === undefined ) continue;
					const buffer = attribute.buffer;
					const type = attribute.type;
					enableAttributeAndDivisor( programAttribute + 0, 1 );
					enableAttributeAndDivisor( programAttribute + 1, 1 );
					enableAttributeAndDivisor( programAttribute + 2, 1 );
					enableAttributeAndDivisor( programAttribute + 3, 1 );
					gl.bindBuffer( 34962, buffer );
					gl.vertexAttribPointer( programAttribute + 0, 4, type, false, 64, 0 );
					gl.vertexAttribPointer( programAttribute + 1, 4, type, false, 64, 16 );
					gl.vertexAttribPointer( programAttribute + 2, 4, type, false, 64, 32 );
					gl.vertexAttribPointer( programAttribute + 3, 4, type, false, 64, 48 );
				} else if ( name === 'instanceColor' ) {
					const attribute = attributes.get( object.instanceColor );
					if ( attribute === undefined ) continue;
					const buffer = attribute.buffer;
					const type = attribute.type;
					enableAttributeAndDivisor( programAttribute, 1 );
					gl.bindBuffer( 34962, buffer );
					gl.vertexAttribPointer( programAttribute, 3, type, false, 12, 0 );
				} else if ( materialDefaultAttributeValues !== undefined ) {
					const value = materialDefaultAttributeValues[ name ];
					if ( value !== undefined ) {
						switch ( value.length ) {
							case 2:
								gl.vertexAttrib2fv( programAttribute, value );
								break;
							case 3:
								gl.vertexAttrib3fv( programAttribute, value );
								break;
							case 4:
								gl.vertexAttrib4fv( programAttribute, value );
								break;
							default:
								gl.vertexAttrib1fv( programAttribute, value );
						}
					}
				}
			}
		}
		disableUnusedAttributes();
	}
	function dispose() {
		reset();
		for ( const geometryId in bindingStates ) {
			const programMap = bindingStates[ geometryId ];
			for ( const programId in programMap ) {
				const stateMap = programMap[ programId ];
				for ( const wireframe in stateMap ) {
					deleteVertexArrayObject( stateMap[ wireframe ].object );
					delete stateMap[ wireframe ];
				}
				delete programMap[ programId ];
			}
			delete bindingStates[ geometryId ];
		}
	}
	function releaseStatesOfGeometry( geometry ) {
		if ( bindingStates[ geometry.id ] === undefined ) return;
		const programMap = bindingStates[ geometry.id ];
		for ( const programId in programMap ) {
			const stateMap = programMap[ programId ];
			for ( const wireframe in stateMap ) {
				deleteVertexArrayObject( stateMap[ wireframe ].object );
				delete stateMap[ wireframe ];
			}
			delete programMap[ programId ];
		}
		delete bindingStates[ geometry.id ];
	}
	function releaseStatesOfProgram( program ) {
		for ( const geometryId in bindingStates ) {
			const programMap = bindingStates[ geometryId ];
			if ( programMap[ program.id ] === undefined ) continue;
			const stateMap = programMap[ program.id ];
			for ( const wireframe in stateMap ) {
				deleteVertexArrayObject( stateMap[ wireframe ].object );
				delete stateMap[ wireframe ];
			}
			delete programMap[ program.id ];
		}
	}
	function reset() {
		resetDefaultState();
		if ( currentState === defaultState ) return;
		currentState = defaultState;
		bindVertexArrayObject( currentState.object );
	}
	function resetDefaultState() {
		defaultState.geometry = null;
		defaultState.program = null;
		defaultState.wireframe = false;
	}
	return {
		setup: setup,
		reset: reset,
		resetDefaultState: resetDefaultState,
		dispose: dispose,
		releaseStatesOfGeometry: releaseStatesOfGeometry,
		releaseStatesOfProgram: releaseStatesOfProgram,
		initAttributes: initAttributes,
		enableAttribute: enableAttribute,
		disableUnusedAttributes: disableUnusedAttributes
	};
}
function WebGLBufferRenderer( gl, extensions, info, capabilities ) {
	const isWebGL2 = capabilities.isWebGL2;
	let mode;
	function setMode( value ) {
		mode = value;
	}
	function render( start, count ) {
		gl.drawArrays( mode, start, count );
		info.update( count, mode, 1 );
	}
	function renderInstances( start, count, primcount ) {
		if ( primcount === 0 ) return;
		let extension, methodName;
		if ( isWebGL2 ) {
			extension = gl;
			methodName = 'drawArraysInstanced';
		} else {
			extension = extensions.get( 'ANGLE_instanced_arrays' );
			methodName = 'drawArraysInstancedANGLE';
			if ( extension === null ) {
				console.error( 'THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
				return;
			}
		}
		extension[ methodName ]( mode, start, count, primcount );
		info.update( count, mode, primcount );
	}
	this.setMode = setMode;
	this.render = render;
	this.renderInstances = renderInstances;
}
function WebGLCapabilities( gl, extensions, parameters ) {
	let maxAnisotropy;
	function getMaxAnisotropy() {
		if ( maxAnisotropy !== undefined ) return maxAnisotropy;
		const extension = extensions.get( 'EXT_texture_filter_anisotropic' );
		if ( extension !== null ) {
			maxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );
		} else {
			maxAnisotropy = 0;
		}
		return maxAnisotropy;
	}
	function getMaxPrecision( precision ) {
		if ( precision === 'highp' ) {
			if ( gl.getShaderPrecisionFormat( 35633, 36338 ).precision > 0 &&
				gl.getShaderPrecisionFormat( 35632, 36338 ).precision > 0 ) {
				return 'highp';
			}
			precision = 'mediump';
		}
		if ( precision === 'mediump' ) {
			if ( gl.getShaderPrecisionFormat( 35633, 36337 ).precision > 0 &&
				gl.getShaderPrecisionFormat( 35632, 36337 ).precision > 0 ) {
				return 'mediump';
			}
		}
		return 'lowp';
	}
	const isWebGL2 = ( typeof WebGL2RenderingContext !== 'undefined' && gl instanceof WebGL2RenderingContext ) ||
		( typeof WebGL2ComputeRenderingContext !== 'undefined' && gl instanceof WebGL2ComputeRenderingContext );
	let precision = parameters.precision !== undefined ? parameters.precision : 'highp';
	const maxPrecision = getMaxPrecision( precision );
	if ( maxPrecision !== precision ) {
		console.warn( 'THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.' );
		precision = maxPrecision;
	}
	const logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;
	const maxTextures = gl.getParameter( 34930 );
	const maxVertexTextures = gl.getParameter( 35660 );
	const maxTextureSize = gl.getParameter( 3379 );
	const maxCubemapSize = gl.getParameter( 34076 );
	const maxAttributes = gl.getParameter( 34921 );
	const maxVertexUniforms = gl.getParameter( 36347 );
	const maxVaryings = gl.getParameter( 36348 );
	const maxFragmentUniforms = gl.getParameter( 36349 );
	const vertexTextures = maxVertexTextures > 0;
	const floatFragmentTextures = isWebGL2 || !! extensions.get( 'OES_texture_float' );
	const floatVertexTextures = vertexTextures && floatFragmentTextures;
	const maxSamples = isWebGL2 ? gl.getParameter( 36183 ) : 0;
	return {
		isWebGL2: isWebGL2,
		getMaxAnisotropy: getMaxAnisotropy,
		getMaxPrecision: getMaxPrecision,
		precision: precision,
		logarithmicDepthBuffer: logarithmicDepthBuffer,
		maxTextures: maxTextures,
		maxVertexTextures: maxVertexTextures,
		maxTextureSize: maxTextureSize,
		maxCubemapSize: maxCubemapSize,
		maxAttributes: maxAttributes,
		maxVertexUniforms: maxVertexUniforms,
		maxVaryings: maxVaryings,
		maxFragmentUniforms: maxFragmentUniforms,
		vertexTextures: vertexTextures,
		floatFragmentTextures: floatFragmentTextures,
		floatVertexTextures: floatVertexTextures,
		maxSamples: maxSamples
	};
}
function WebGLClipping( properties ) {
	const scope = this;
	let globalState = null,
		numGlobalPlanes = 0,
		localClippingEnabled = false,
		renderingShadows = false;
	const plane = new Plane(),
		viewNormalMatrix = new Matrix3(),
		uniform = { value: null, needsUpdate: false };
	this.uniform = uniform;
	this.numPlanes = 0;
	this.numIntersection = 0;
	this.init = function ( planes, enableLocalClipping, camera ) {
		const enabled =
			planes.length !== 0 ||
			enableLocalClipping ||
			numGlobalPlanes !== 0 ||
			localClippingEnabled;
		localClippingEnabled = enableLocalClipping;
		globalState = projectPlanes( planes, camera, 0 );
		numGlobalPlanes = planes.length;
		return enabled;
	};
	this.beginShadows = function () {
		renderingShadows = true;
		projectPlanes( null );
	};
	this.endShadows = function () {
		renderingShadows = false;
		resetGlobalState();
	};
	this.setState = function ( material, camera, useCache ) {
		const planes = material.clippingPlanes,
			clipIntersection = material.clipIntersection,
			clipShadows = material.clipShadows;
		const materialProperties = properties.get( material );
		if ( ! localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && ! clipShadows ) {
			if ( renderingShadows ) {
				projectPlanes( null );
			} else {
				resetGlobalState();
			}
		} else {
			const nGlobal = renderingShadows ? 0 : numGlobalPlanes,
				lGlobal = nGlobal * 4;
			let dstArray = materialProperties.clippingState || null;
			uniform.value = dstArray;
			dstArray = projectPlanes( planes, camera, lGlobal, useCache );
			for ( let i = 0; i !== lGlobal; ++ i ) {
				dstArray[ i ] = globalState[ i ];
			}
			materialProperties.clippingState = dstArray;
			this.numIntersection = clipIntersection ? this.numPlanes : 0;
			this.numPlanes += nGlobal;
		}
	};
	function resetGlobalState() {
		if ( uniform.value !== globalState ) {
			uniform.value = globalState;
			uniform.needsUpdate = numGlobalPlanes > 0;
		}
		scope.numPlanes = numGlobalPlanes;
		scope.numIntersection = 0;
	}
	function projectPlanes( planes, camera, dstOffset, skipTransform ) {
		const nPlanes = planes !== null ? planes.length : 0;
		let dstArray = null;
		if ( nPlanes !== 0 ) {
			dstArray = uniform.value;
			if ( skipTransform !== true || dstArray === null ) {
				const flatSize = dstOffset + nPlanes * 4,
					viewMatrix = camera.matrixWorldInverse;
				viewNormalMatrix.getNormalMatrix( viewMatrix );
				if ( dstArray === null || dstArray.length < flatSize ) {
					dstArray = new Float32Array( flatSize );
				}
				for ( let i = 0, i4 = dstOffset; i !== nPlanes; ++ i, i4 += 4 ) {
					plane.copy( planes[ i ] ).applyMatrix4( viewMatrix, viewNormalMatrix );
					plane.normal.toArray( dstArray, i4 );
					dstArray[ i4 + 3 ] = plane.constant;
				}
			}
			uniform.value = dstArray;
			uniform.needsUpdate = true;
		}
		scope.numPlanes = nPlanes;
		scope.numIntersection = 0;
		return dstArray;
	}
}
function WebGLCubeMaps( renderer ) {
	let cubemaps = new WeakMap();
	function mapTextureMapping( texture, mapping ) {
		if ( mapping === EquirectangularReflectionMapping ) {
			texture.mapping = CubeReflectionMapping;
		} else if ( mapping === EquirectangularRefractionMapping ) {
			texture.mapping = CubeRefractionMapping;
		}
		return texture;
	}
	function get( texture ) {
		if ( texture && texture.isTexture ) {
			const mapping = texture.mapping;
			if ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping ) {
				if ( cubemaps.has( texture ) ) {
					const cubemap = cubemaps.get( texture ).texture;
					return mapTextureMapping( cubemap, texture.mapping );
				} else {
					const image = texture.image;
					if ( image && image.height > 0 ) {
						const currentRenderList = renderer.getRenderList();
						const currentRenderTarget = renderer.getRenderTarget();
						const currentRenderState = renderer.getRenderState();
						const renderTarget = new WebGLCubeRenderTarget( image.height / 2 );
						renderTarget.fromEquirectangularTexture( renderer, texture );
						cubemaps.set( texture, renderTarget );
						renderer.setRenderTarget( currentRenderTarget );
						renderer.setRenderList( currentRenderList );
						renderer.setRenderState( currentRenderState );
						return mapTextureMapping( renderTarget.texture, texture.mapping );
					} else {
						return null;
					}
				}
			}
		}
		return texture;
	}
	function dispose() {
		cubemaps = new WeakMap();
	}
	return {
		get: get,
		dispose: dispose
	};
}
function WebGLExtensions( gl ) {
	const extensions = {};
	return {
		has: function ( name ) {
			if ( extensions[ name ] !== undefined ) {
				return extensions[ name ] !== null;
			}
			let extension;
			switch ( name ) {
				case 'WEBGL_depth_texture':
					extension = gl.getExtension( 'WEBGL_depth_texture' ) || gl.getExtension( 'MOZ_WEBGL_depth_texture' ) || gl.getExtension( 'WEBKIT_WEBGL_depth_texture' );
					break;
				case 'EXT_texture_filter_anisotropic':
					extension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );
					break;
				case 'WEBGL_compressed_texture_s3tc':
					extension = gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );
					break;
				case 'WEBGL_compressed_texture_pvrtc':
					extension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
					break;
				default:
					extension = gl.getExtension( name );
			}
			extensions[ name ] = extension;
			return extension !== null;
		},
		get: function ( name ) {
			if ( ! this.has( name ) ) {
				console.warn( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );
			}
			return extensions[ name ];
		}
	};
}
function WebGLGeometries( gl, attributes, info, bindingStates ) {
	const geometries = new WeakMap();
	const wireframeAttributes = new WeakMap();
	function onGeometryDispose( event ) {
		const geometry = event.target;
		const buffergeometry = geometries.get( geometry );
		if ( buffergeometry.index !== null ) {
			attributes.remove( buffergeometry.index );
		}
		for ( const name in buffergeometry.attributes ) {
			attributes.remove( buffergeometry.attributes[ name ] );
		}
		geometry.removeEventListener( 'dispose', onGeometryDispose );
		geometries.delete( geometry );
		const attribute = wireframeAttributes.get( buffergeometry );
		if ( attribute ) {
			attributes.remove( attribute );
			wireframeAttributes.delete( buffergeometry );
		}
		bindingStates.releaseStatesOfGeometry( geometry );
		if ( geometry.isInstancedBufferGeometry === true ) {
			delete geometry._maxInstanceCount;
		}
		info.memory.geometries --;
	}
	function get( object, geometry ) {
		let buffergeometry = geometries.get( geometry );
		if ( buffergeometry ) return buffergeometry;
		geometry.addEventListener( 'dispose', onGeometryDispose );
		if ( geometry.isBufferGeometry ) {
			buffergeometry = geometry;
		} else if ( geometry.isGeometry ) {
			if ( geometry._bufferGeometry === undefined ) {
				geometry._bufferGeometry = new BufferGeometry().setFromObject( object );
			}
			buffergeometry = geometry._bufferGeometry;
		}
		geometries.set( geometry, buffergeometry );
		info.memory.geometries ++;
		return buffergeometry;
	}
	function update( geometry ) {
		const geometryAttributes = geometry.attributes;
		for ( const name in geometryAttributes ) {
			attributes.update( geometryAttributes[ name ], 34962 );
		}
		const morphAttributes = geometry.morphAttributes;
		for ( const name in morphAttributes ) {
			const array = morphAttributes[ name ];
			for ( let i = 0, l = array.length; i < l; i ++ ) {
				attributes.update( array[ i ], 34962 );
			}
		}
	}
	function updateWireframeAttribute( geometry ) {
		const indices = [];
		const geometryIndex = geometry.index;
		const geometryPosition = geometry.attributes.position;
		let version = 0;
		if ( geometryIndex !== null ) {
			const array = geometryIndex.array;
			version = geometryIndex.version;
			for ( let i = 0, l = array.length; i < l; i += 3 ) {
				const a = array[ i + 0 ];
				const b = array[ i + 1 ];
				const c = array[ i + 2 ];
				indices.push( a, b, b, c, c, a );
			}
		} else {
			const array = geometryPosition.array;
			version = geometryPosition.version;
			for ( let i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {
				const a = i + 0;
				const b = i + 1;
				const c = i + 2;
				indices.push( a, b, b, c, c, a );
			}
		}
		const attribute = new ( arrayMax( indices ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );
		attribute.version = version;
		const previousAttribute = wireframeAttributes.get( geometry );
		if ( previousAttribute ) attributes.remove( previousAttribute );
		wireframeAttributes.set( geometry, attribute );
	}
	function getWireframeAttribute( geometry ) {
		const currentAttribute = wireframeAttributes.get( geometry );
		if ( currentAttribute ) {
			const geometryIndex = geometry.index;
			if ( geometryIndex !== null ) {
				if ( currentAttribute.version < geometryIndex.version ) {
					updateWireframeAttribute( geometry );
				}
			}
		} else {
			updateWireframeAttribute( geometry );
		}
		return wireframeAttributes.get( geometry );
	}
	return {
		get: get,
		update: update,
		getWireframeAttribute: getWireframeAttribute
	};
}
function WebGLIndexedBufferRenderer( gl, extensions, info, capabilities ) {
	const isWebGL2 = capabilities.isWebGL2;
	let mode;
	function setMode( value ) {
		mode = value;
	}
	let type, bytesPerElement;
	function setIndex( value ) {
		type = value.type;
		bytesPerElement = value.bytesPerElement;
	}
	function render( start, count ) {
		gl.drawElements( mode, count, type, start * bytesPerElement );
		info.update( count, mode, 1 );
	}
	function renderInstances( start, count, primcount ) {
		if ( primcount === 0 ) return;
		let extension, methodName;
		if ( isWebGL2 ) {
			extension = gl;
			methodName = 'drawElementsInstanced';
		} else {
			extension = extensions.get( 'ANGLE_instanced_arrays' );
			methodName = 'drawElementsInstancedANGLE';
			if ( extension === null ) {
				console.error( 'THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
				return;
			}
		}
		extension[ methodName ]( mode, count, type, start * bytesPerElement, primcount );
		info.update( count, mode, primcount );
	}
	this.setMode = setMode;
	this.setIndex = setIndex;
	this.render = render;
	this.renderInstances = renderInstances;
}
function WebGLInfo( gl ) {
	const memory = {
		geometries: 0,
		textures: 0
	};
	const render = {
		frame: 0,
		calls: 0,
		triangles: 0,
		points: 0,
		lines: 0
	};
	function update( count, mode, instanceCount ) {
		render.calls ++;
		switch ( mode ) {
			case 4:
				render.triangles += instanceCount * ( count / 3 );
				break;
			case 1:
				render.lines += instanceCount * ( count / 2 );
				break;
			case 3:
				render.lines += instanceCount * ( count - 1 );
				break;
			case 2:
				render.lines += instanceCount * count;
				break;
			case 0:
				render.points += instanceCount * count;
				break;
			default:
				console.error( 'THREE.WebGLInfo: Unknown draw mode:', mode );
				break;
		}
	}
	function reset() {
		render.frame ++;
		render.calls = 0;
		render.triangles = 0;
		render.points = 0;
		render.lines = 0;
	}
	return {
		memory: memory,
		render: render,
		programs: null,
		autoReset: true,
		reset: reset,
		update: update
	};
}
function numericalSort( a, b ) {
	return a[ 0 ] - b[ 0 ];
}
function absNumericalSort( a, b ) {
	return Math.abs( b[ 1 ] ) - Math.abs( a[ 1 ] );
}
function WebGLMorphtargets( gl ) {
	const influencesList = {};
	const morphInfluences = new Float32Array( 8 );
	const workInfluences = [];
	for ( let i = 0; i < 8; i ++ ) {
		workInfluences[ i ] = [ i, 0 ];
	}
	function update( object, geometry, material, program ) {
		const objectInfluences = object.morphTargetInfluences;
		const length = objectInfluences === undefined ? 0 : objectInfluences.length;
		let influences = influencesList[ geometry.id ];
		if ( influences === undefined ) {
			influences = [];
			for ( let i = 0; i < length; i ++ ) {
				influences[ i ] = [ i, 0 ];
			}
			influencesList[ geometry.id ] = influences;
		}
		for ( let i = 0; i < length; i ++ ) {
			const influence = influences[ i ];
			influence[ 0 ] = i;
			influence[ 1 ] = objectInfluences[ i ];
		}
		influences.sort( absNumericalSort );
		for ( let i = 0; i < 8; i ++ ) {
			if ( i < length && influences[ i ][ 1 ] ) {
				workInfluences[ i ][ 0 ] = influences[ i ][ 0 ];
				workInfluences[ i ][ 1 ] = influences[ i ][ 1 ];
			} else {
				workInfluences[ i ][ 0 ] = Number.MAX_SAFE_INTEGER;
				workInfluences[ i ][ 1 ] = 0;
			}
		}
		workInfluences.sort( numericalSort );
		const morphTargets = material.morphTargets && geometry.morphAttributes.position;
		const morphNormals = material.morphNormals && geometry.morphAttributes.normal;
		let morphInfluencesSum = 0;
		for ( let i = 0; i < 8; i ++ ) {
			const influence = workInfluences[ i ];
			const index = influence[ 0 ];
			const value = influence[ 1 ];
			if ( index !== Number.MAX_SAFE_INTEGER && value ) {
				if ( morphTargets && geometry.getAttribute( 'morphTarget' + i ) !== morphTargets[ index ] ) {
					geometry.setAttribute( 'morphTarget' + i, morphTargets[ index ] );
				}
				if ( morphNormals && geometry.getAttribute( 'morphNormal' + i ) !== morphNormals[ index ] ) {
					geometry.setAttribute( 'morphNormal' + i, morphNormals[ index ] );
				}
				morphInfluences[ i ] = value;
				morphInfluencesSum += value;
			} else {
				if ( morphTargets && geometry.getAttribute( 'morphTarget' + i ) !== undefined ) {
					geometry.deleteAttribute( 'morphTarget' + i );
				}
				if ( morphNormals && geometry.getAttribute( 'morphNormal' + i ) !== undefined ) {
					geometry.deleteAttribute( 'morphNormal' + i );
				}
				morphInfluences[ i ] = 0;
			}
		}
		const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;
		program.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );
		program.getUniforms().setValue( gl, 'morphTargetInfluences', morphInfluences );
	}
	return {
		update: update
	};
}
function WebGLObjects( gl, geometries, attributes, info ) {
	let updateMap = new WeakMap();
	function update( object ) {
		const frame = info.render.frame;
		const geometry = object.geometry;
		const buffergeometry = geometries.get( object, geometry );
		if ( updateMap.get( buffergeometry ) !== frame ) {
			if ( geometry.isGeometry ) {
				buffergeometry.updateFromObject( object );
			}
			geometries.update( buffergeometry );
			updateMap.set( buffergeometry, frame );
		}
		if ( object.isInstancedMesh ) {
			attributes.update( object.instanceMatrix, 34962 );
			if ( object.instanceColor !== null ) {
				attributes.update( object.instanceColor, 34962 );
			}
		}
		return buffergeometry;
	}
	function dispose() {
		updateMap = new WeakMap();
	}
	return {
		update: update,
		dispose: dispose
	};
}
function CubeTexture( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {
	images = images !== undefined ? images : [];
	mapping = mapping !== undefined ? mapping : CubeReflectionMapping;
	format = format !== undefined ? format : RGBFormat;
	Texture.call( this, images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );
	this.flipY = false;
}
CubeTexture.prototype = Object.create( Texture.prototype );
CubeTexture.prototype.constructor = CubeTexture;
CubeTexture.prototype.isCubeTexture = true;
Object.defineProperty( CubeTexture.prototype, 'images', {
	get: function () {
		return this.image;
	},
	set: function ( value ) {
		this.image = value;
	}
} );
function DataTexture2DArray( data, width, height, depth ) {
	Texture.call( this, null );
	this.image = { data: data || null, width: width || 1, height: height || 1, depth: depth || 1 };
	this.magFilter = NearestFilter;
	this.minFilter = NearestFilter;
	this.wrapR = ClampToEdgeWrapping;
	this.generateMipmaps = false;
	this.flipY = false;
	this.needsUpdate = true;
}
DataTexture2DArray.prototype = Object.create( Texture.prototype );
DataTexture2DArray.prototype.constructor = DataTexture2DArray;
DataTexture2DArray.prototype.isDataTexture2DArray = true;
function DataTexture3D( data, width, height, depth ) {
	Texture.call( this, null );
	this.image = { data: data || null, width: width || 1, height: height || 1, depth: depth || 1 };
	this.magFilter = NearestFilter;
	this.minFilter = NearestFilter;
	this.wrapR = ClampToEdgeWrapping;
	this.generateMipmaps = false;
	this.flipY = false;
	this.needsUpdate = true;
}
DataTexture3D.prototype = Object.create( Texture.prototype );
DataTexture3D.prototype.constructor = DataTexture3D;
DataTexture3D.prototype.isDataTexture3D = true;
const emptyTexture = new Texture();
const emptyTexture2dArray = new DataTexture2DArray();
const emptyTexture3d = new DataTexture3D();
const emptyCubeTexture = new CubeTexture();
const arrayCacheF32 = [];
const arrayCacheI32 = [];
const mat4array = new Float32Array( 16 );
const mat3array = new Float32Array( 9 );
const mat2array = new Float32Array( 4 );
function flatten( array, nBlocks, blockSize ) {
	const firstElem = array[ 0 ];
	if ( firstElem <= 0 || firstElem > 0 ) return array;
	const n = nBlocks * blockSize;
	let r = arrayCacheF32[ n ];
	if ( r === undefined ) {
		r = new Float32Array( n );
		arrayCacheF32[ n ] = r;
	}
	if ( nBlocks !== 0 ) {
		firstElem.toArray( r, 0 );
		for ( let i = 1, offset = 0; i !== nBlocks; ++ i ) {
			offset += blockSize;
			array[ i ].toArray( r, offset );
		}
	}
	return r;
}
function arraysEqual( a, b ) {
	if ( a.length !== b.length ) return false;
	for ( let i = 0, l = a.length; i < l; i ++ ) {
		if ( a[ i ] !== b[ i ] ) return false;
	}
	return true;
}
function copyArray( a, b ) {
	for ( let i = 0, l = b.length; i < l; i ++ ) {
		a[ i ] = b[ i ];
	}
}
function allocTexUnits( textures, n ) {
	let r = arrayCacheI32[ n ];
	if ( r === undefined ) {
		r = new Int32Array( n );
		arrayCacheI32[ n ] = r;
	}
	for ( let i = 0; i !== n; ++ i ) {
		r[ i ] = textures.allocateTextureUnit();
	}
	return r;
}
function setValueV1f( gl, v ) {
	const cache = this.cache;
	if ( cache[ 0 ] === v ) return;
	gl.uniform1f( this.addr, v );
	cache[ 0 ] = v;
}
function setValueV2f( gl, v ) {
	const cache = this.cache;
	if ( v.x !== undefined ) {
		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {
			gl.uniform2f( this.addr, v.x, v.y );
			cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;
		}
	} else {
		if ( arraysEqual( cache, v ) ) return;
		gl.uniform2fv( this.addr, v );
		copyArray( cache, v );
	}
}
function setValueV3f( gl, v ) {
	const cache = this.cache;
	if ( v.x !== undefined ) {
		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {
			gl.uniform3f( this.addr, v.x, v.y, v.z );
			cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;
			cache[ 2 ] = v.z;
		}
	} else if ( v.r !== undefined ) {
		if ( cache[ 0 ] !== v.r || cache[ 1 ] !== v.g || cache[ 2 ] !== v.b ) {
			gl.uniform3f( this.addr, v.r, v.g, v.b );
			cache[ 0 ] = v.r;
			cache[ 1 ] = v.g;
			cache[ 2 ] = v.b;
		}
	} else {
		if ( arraysEqual( cache, v ) ) return;
		gl.uniform3fv( this.addr, v );
		copyArray( cache, v );
	}
}
function setValueV4f( gl, v ) {
	const cache = this.cache;
	if ( v.x !== undefined ) {
		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {
			gl.uniform4f( this.addr, v.x, v.y, v.z, v.w );
			cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;
			cache[ 2 ] = v.z;
			cache[ 3 ] = v.w;
		}
	} else {
		if ( arraysEqual( cache, v ) ) return;
		gl.uniform4fv( this.addr, v );
		copyArray( cache, v );
	}
}
function setValueM2( gl, v ) {
	const cache = this.cache;
	const elements = v.elements;
	if ( elements === undefined ) {
		if ( arraysEqual( cache, v ) ) return;
		gl.uniformMatrix2fv( this.addr, false, v );
		copyArray( cache, v );
	} else {
		if ( arraysEqual( cache, elements ) ) return;
		mat2array.set( elements );
		gl.uniformMatrix2fv( this.addr, false, mat2array );
		copyArray( cache, elements );
	}
}
function setValueM3( gl, v ) {
	const cache = this.cache;
	const elements = v.elements;
	if ( elements === undefined ) {
		if ( arraysEqual( cache, v ) ) return;
		gl.uniformMatrix3fv( this.addr, false, v );
		copyArray( cache, v );
	} else {
		if ( arraysEqual( cache, elements ) ) return;
		mat3array.set( elements );
		gl.uniformMatrix3fv( this.addr, false, mat3array );
		copyArray( cache, elements );
	}
}
function setValueM4( gl, v ) {
	const cache = this.cache;
	const elements = v.elements;
	if ( elements === undefined ) {
		if ( arraysEqual( cache, v ) ) return;
		gl.uniformMatrix4fv( this.addr, false, v );
		copyArray( cache, v );
	} else {
		if ( arraysEqual( cache, elements ) ) return;
		mat4array.set( elements );
		gl.uniformMatrix4fv( this.addr, false, mat4array );
		copyArray( cache, elements );
	}
}
function setValueT1( gl, v, textures ) {
	const cache = this.cache;
	const unit = textures.allocateTextureUnit();
	if ( cache[ 0 ] !== unit ) {
		gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;
	}
	textures.safeSetTexture2D( v || emptyTexture, unit );
}
function setValueT2DArray1( gl, v, textures ) {
	const cache = this.cache;
	const unit = textures.allocateTextureUnit();
	if ( cache[ 0 ] !== unit ) {
		gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;
	}
	textures.setTexture2DArray( v || emptyTexture2dArray, unit );
}
function setValueT3D1( gl, v, textures ) {
	const cache = this.cache;
	const unit = textures.allocateTextureUnit();
	if ( cache[ 0 ] !== unit ) {
		gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;
	}
	textures.setTexture3D( v || emptyTexture3d, unit );
}
function setValueT6( gl, v, textures ) {
	const cache = this.cache;
	const unit = textures.allocateTextureUnit();
	if ( cache[ 0 ] !== unit ) {
		gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;
	}
	textures.safeSetTextureCube( v || emptyCubeTexture, unit );
}
function setValueV1i( gl, v ) {
	const cache = this.cache;
	if ( cache[ 0 ] === v ) return;
	gl.uniform1i( this.addr, v );
	cache[ 0 ] = v;
}
function setValueV2i( gl, v ) {
	const cache = this.cache;
	if ( arraysEqual( cache, v ) ) return;
	gl.uniform2iv( this.addr, v );
	copyArray( cache, v );
}
function setValueV3i( gl, v ) {
	const cache = this.cache;
	if ( arraysEqual( cache, v ) ) return;
	gl.uniform3iv( this.addr, v );
	copyArray( cache, v );
}
function setValueV4i( gl, v ) {
	const cache = this.cache;
	if ( arraysEqual( cache, v ) ) return;
	gl.uniform4iv( this.addr, v );
	copyArray( cache, v );
}
function setValueV1ui( gl, v ) {
	const cache = this.cache;
	if ( cache[ 0 ] === v ) return;
	gl.uniform1ui( this.addr, v );
	cache[ 0 ] = v;
}
function getSingularSetter( type ) {
	switch ( type ) {
		case 0x1406: return setValueV1f;
		case 0x8b50: return setValueV2f;
		case 0x8b51: return setValueV3f;
		case 0x8b52: return setValueV4f;
		case 0x8b5a: return setValueM2;
		case 0x8b5b: return setValueM3;
		case 0x8b5c: return setValueM4;
		case 0x1404: case 0x8b56: return setValueV1i;
		case 0x8b53: case 0x8b57: return setValueV2i;
		case 0x8b54: case 0x8b58: return setValueV3i;
		case 0x8b55: case 0x8b59: return setValueV4i;
		case 0x1405: return setValueV1ui;
		case 0x8b5e:
		case 0x8d66:
		case 0x8dca:
		case 0x8dd2:
		case 0x8b62:
			return setValueT1;
		case 0x8b5f:
		case 0x8dcb:
		case 0x8dd3:
			return setValueT3D1;
		case 0x8b60:
		case 0x8dcc:
		case 0x8dd4:
		case 0x8dc5:
			return setValueT6;
		case 0x8dc1:
		case 0x8dcf:
		case 0x8dd7:
		case 0x8dc4:
			return setValueT2DArray1;
	}
}
function setValueV1fArray( gl, v ) {
	gl.uniform1fv( this.addr, v );
}
function setValueV1iArray( gl, v ) {
	gl.uniform1iv( this.addr, v );
}
function setValueV2iArray( gl, v ) {
	gl.uniform2iv( this.addr, v );
}
function setValueV3iArray( gl, v ) {
	gl.uniform3iv( this.addr, v );
}
function setValueV4iArray( gl, v ) {
	gl.uniform4iv( this.addr, v );
}
function setValueV2fArray( gl, v ) {
	const data = flatten( v, this.size, 2 );
	gl.uniform2fv( this.addr, data );
}
function setValueV3fArray( gl, v ) {
	const data = flatten( v, this.size, 3 );
	gl.uniform3fv( this.addr, data );
}
function setValueV4fArray( gl, v ) {
	const data = flatten( v, this.size, 4 );
	gl.uniform4fv( this.addr, data );
}
function setValueM2Array( gl, v ) {
	const data = flatten( v, this.size, 4 );
	gl.uniformMatrix2fv( this.addr, false, data );
}
function setValueM3Array( gl, v ) {
	const data = flatten( v, this.size, 9 );
	gl.uniformMatrix3fv( this.addr, false, data );
}
function setValueM4Array( gl, v ) {
	const data = flatten( v, this.size, 16 );
	gl.uniformMatrix4fv( this.addr, false, data );
}
function setValueT1Array( gl, v, textures ) {
	const n = v.length;
	const units = allocTexUnits( textures, n );
	gl.uniform1iv( this.addr, units );
	for ( let i = 0; i !== n; ++ i ) {
		textures.safeSetTexture2D( v[ i ] || emptyTexture, units[ i ] );
	}
}
function setValueT6Array( gl, v, textures ) {
	const n = v.length;
	const units = allocTexUnits( textures, n );
	gl.uniform1iv( this.addr, units );
	for ( let i = 0; i !== n; ++ i ) {
		textures.safeSetTextureCube( v[ i ] || emptyCubeTexture, units[ i ] );
	}
}
function getPureArraySetter( type ) {
	switch ( type ) {
		case 0x1406: return setValueV1fArray;
		case 0x8b50: return setValueV2fArray;
		case 0x8b51: return setValueV3fArray;
		case 0x8b52: return setValueV4fArray;
		case 0x8b5a: return setValueM2Array;
		case 0x8b5b: return setValueM3Array;
		case 0x8b5c: return setValueM4Array;
		case 0x1404: case 0x8b56: return setValueV1iArray;
		case 0x8b53: case 0x8b57: return setValueV2iArray;
		case 0x8b54: case 0x8b58: return setValueV3iArray;
		case 0x8b55: case 0x8b59: return setValueV4iArray;
		case 0x8b5e:
		case 0x8d66:
		case 0x8dca:
		case 0x8dd2:
		case 0x8b62:
			return setValueT1Array;
		case 0x8b60:
		case 0x8dcc:
		case 0x8dd4:
		case 0x8dc5:
			return setValueT6Array;
	}
}
function SingleUniform( id, activeInfo, addr ) {
	this.id = id;
	this.addr = addr;
	this.cache = [];
	this.setValue = getSingularSetter( activeInfo.type );
}
function PureArrayUniform( id, activeInfo, addr ) {
	this.id = id;
	this.addr = addr;
	this.cache = [];
	this.size = activeInfo.size;
	this.setValue = getPureArraySetter( activeInfo.type );
}
PureArrayUniform.prototype.updateCache = function ( data ) {
	const cache = this.cache;
	if ( data instanceof Float32Array && cache.length !== data.length ) {
		this.cache = new Float32Array( data.length );
	}
	copyArray( cache, data );
};
function StructuredUniform( id ) {
	this.id = id;
	this.seq = [];
	this.map = {};
}
StructuredUniform.prototype.setValue = function ( gl, value, textures ) {
	const seq = this.seq;
	for ( let i = 0, n = seq.length; i !== n; ++ i ) {
		const u = seq[ i ];
		u.setValue( gl, value[ u.id ], textures );
	}
};
const RePathPart = /([\w\d_]+)(\])?(\[|\.)?/g;
function addUniform( container, uniformObject ) {
	container.seq.push( uniformObject );
	container.map[ uniformObject.id ] = uniformObject;
}
function parseUniform( activeInfo, addr, container ) {
	const path = activeInfo.name,
		pathLength = path.length;
	RePathPart.lastIndex = 0;
	while ( true ) {
		const match = RePathPart.exec( path ),
			matchEnd = RePathPart.lastIndex;
		let id = match[ 1 ];
		const idIsIndex = match[ 2 ] === ']',
			subscript = match[ 3 ];
		if ( idIsIndex ) id = id | 0;
		if ( subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength ) {
			addUniform( container, subscript === undefined ?
				new SingleUniform( id, activeInfo, addr ) :
				new PureArrayUniform( id, activeInfo, addr ) );
			break;
		} else {
			const map = container.map;
			let next = map[ id ];
			if ( next === undefined ) {
				next = new StructuredUniform( id );
				addUniform( container, next );
			}
			container = next;
		}
	}
}
function WebGLUniforms( gl, program ) {
	this.seq = [];
	this.map = {};
	const n = gl.getProgramParameter( program, 35718 );
	for ( let i = 0; i < n; ++ i ) {
		const info = gl.getActiveUniform( program, i ),
			addr = gl.getUniformLocation( program, info.name );
		parseUniform( info, addr, this );
	}
}
WebGLUniforms.prototype.setValue = function ( gl, name, value, textures ) {
	const u = this.map[ name ];
	if ( u !== undefined ) u.setValue( gl, value, textures );
};
WebGLUniforms.prototype.setOptional = function ( gl, object, name ) {
	const v = object[ name ];
	if ( v !== undefined ) this.setValue( gl, name, v );
};
WebGLUniforms.upload = function ( gl, seq, values, textures ) {
	for ( let i = 0, n = seq.length; i !== n; ++ i ) {
		const u = seq[ i ],
			v = values[ u.id ];
		if ( v.needsUpdate !== false ) {
			u.setValue( gl, v.value, textures );
		}
	}
};
WebGLUniforms.seqWithValue = function ( seq, values ) {
	const r = [];
	for ( let i = 0, n = seq.length; i !== n; ++ i ) {
		const u = seq[ i ];
		if ( u.id in values ) r.push( u );
	}
	return r;
};
function WebGLShader( gl, type, string ) {
	const shader = gl.createShader( type );
	gl.shaderSource( shader, string );
	gl.compileShader( shader );
	return shader;
}
let programIdCount = 0;
function addLineNumbers( string ) {
	const lines = string.split( '\n' );
	for ( let i = 0; i < lines.length; i ++ ) {
		lines[ i ] = ( i + 1 ) + ': ' + lines[ i ];
	}
	return lines.join( '\n' );
}
function getEncodingComponents( encoding ) {
	switch ( encoding ) {
		case LinearEncoding:
			return [ 'Linear', '( value )' ];
		case sRGBEncoding:
			return [ 'sRGB', '( value )' ];
		case RGBEEncoding:
			return [ 'RGBE', '( value )' ];
		case RGBM7Encoding:
			return [ 'RGBM', '( value, 7.0 )' ];
		case RGBM16Encoding:
			return [ 'RGBM', '( value, 16.0 )' ];
		case RGBDEncoding:
			return [ 'RGBD', '( value, 256.0 )' ];
		case GammaEncoding:
			return [ 'Gamma', '( value, float( GAMMA_FACTOR ) )' ];
		case LogLuvEncoding:
			return [ 'LogLuv', '( value )' ];
		default:
			console.warn( 'THREE.WebGLProgram: Unsupported encoding:', encoding );
			return [ 'Linear', '( value )' ];
	}
}
function getShaderErrors( gl, shader, type ) {
	const status = gl.getShaderParameter( shader, 35713 );
	const log = gl.getShaderInfoLog( shader ).trim();
	if ( status && log === '' ) return '';
	const source = gl.getShaderSource( shader );
	return 'THREE.WebGLShader: gl.getShaderInfoLog() ' + type + '\n' + log + addLineNumbers( source );
}
function getTexelDecodingFunction( functionName, encoding ) {
	const components = getEncodingComponents( encoding );
	return 'vec4 ' + functionName + '( vec4 value ) { return ' + components[ 0 ] + 'ToLinear' + components[ 1 ] + '; }';
}
function getTexelEncodingFunction( functionName, encoding ) {
	const components = getEncodingComponents( encoding );
	return 'vec4 ' + functionName + '( vec4 value ) { return LinearTo' + components[ 0 ] + components[ 1 ] + '; }';
}
function getToneMappingFunction( functionName, toneMapping ) {
	let toneMappingName;
	switch ( toneMapping ) {
		case LinearToneMapping:
			toneMappingName = 'Linear';
			break;
		case ReinhardToneMapping:
			toneMappingName = 'Reinhard';
			break;
		case CineonToneMapping:
			toneMappingName = 'OptimizedCineon';
			break;
		case ACESFilmicToneMapping:
			toneMappingName = 'ACESFilmic';
			break;
		case CustomToneMapping:
			toneMappingName = 'Custom';
			break;
		default:
			console.warn( 'THREE.WebGLProgram: Unsupported toneMapping:', toneMapping );
			toneMappingName = 'Linear';
	}
	return 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';
}
function generateExtensions( parameters ) {
	const chunks = [
		( parameters.extensionDerivatives || parameters.envMapCubeUV || parameters.bumpMap || parameters.tangentSpaceNormalMap || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === 'physical' ) ? '#extension GL_OES_standard_derivatives : enable' : '',
		( parameters.extensionFragDepth || parameters.logarithmicDepthBuffer ) && parameters.rendererExtensionFragDepth ? '#extension GL_EXT_frag_depth : enable' : '',
		( parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ) ? '#extension GL_EXT_draw_buffers : require' : '',
		( parameters.extensionShaderTextureLOD || parameters.envMap ) && parameters.rendererExtensionShaderTextureLod ? '#extension GL_EXT_shader_texture_lod : enable' : ''
	];
	return chunks.filter( filterEmptyLine ).join( '\n' );
}
function generateDefines( defines ) {
	const chunks = [];
	for ( const name in defines ) {
		const value = defines[ name ];
		if ( value === false ) continue;
		chunks.push( '#define ' + name + ' ' + value );
	}
	return chunks.join( '\n' );
}
function fetchAttributeLocations( gl, program ) {
	const attributes = {};
	const n = gl.getProgramParameter( program, 35721 );
	for ( let i = 0; i < n; i ++ ) {
		const info = gl.getActiveAttrib( program, i );
		const name = info.name;
		attributes[ name ] = gl.getAttribLocation( program, name );
	}
	return attributes;
}
function filterEmptyLine( string ) {
	return string !== '';
}
function replaceLightNums( string, parameters ) {
	return string
		.replace( /NUM_DIR_LIGHTS/g, parameters.numDirLights )
		.replace( /NUM_SPOT_LIGHTS/g, parameters.numSpotLights )
		.replace( /NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights )
		.replace( /NUM_POINT_LIGHTS/g, parameters.numPointLights )
		.replace( /NUM_HEMI_LIGHTS/g, parameters.numHemiLights )
		.replace( /NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows )
		.replace( /NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows )
		.replace( /NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows );
}
function replaceClippingPlaneNums( string, parameters ) {
	return string
		.replace( /NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes )
		.replace( /UNION_CLIPPING_PLANES/g, ( parameters.numClippingPlanes - parameters.numClipIntersection ) );
}
const includePattern = /^[ \t]*#include +<([\w\d./]+)>/gm;
function resolveIncludes( string ) {
	return string.replace( includePattern, includeReplacer );
}
function includeReplacer( match, include ) {
	const string = ShaderChunk[ include ];
	if ( string === undefined ) {
		throw new Error( 'Can not resolve #include <' + include + '>' );
	}
	return resolveIncludes( string );
}
const deprecatedUnrollLoopPattern = /#pragma unroll_loop[\s]+?for \( int i \= (\d+)\; i < (\d+)\; i \+\+ \) \{([\s\S]+?)(?=\})\}/g;
const unrollLoopPattern = /#pragma unroll_loop_start\s+for\s*\(\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*i\s*\+\+\s*\)\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;
function unrollLoops( string ) {
	return string
		.replace( unrollLoopPattern, loopReplacer )
		.replace( deprecatedUnrollLoopPattern, deprecatedLoopReplacer );
}
function deprecatedLoopReplacer( match, start, end, snippet ) {
	console.warn( 'WebGLProgram: #pragma unroll_loop shader syntax is deprecated. Please use #pragma unroll_loop_start syntax instead.' );
	return loopReplacer( match, start, end, snippet );
}
function loopReplacer( match, start, end, snippet ) {
	let string = '';
	for ( let i = parseInt( start ); i < parseInt( end ); i ++ ) {
		string += snippet
			.replace( /\[\s*i\s*\]/g, '[ ' + i + ' ]' )
			.replace( /UNROLLED_LOOP_INDEX/g, i );
	}
	return string;
}
function generatePrecision( parameters ) {
	let precisionstring = "precision " + parameters.precision + " float;\nprecision " + parameters.precision + " int;";
	if ( parameters.precision === "highp" ) {
		precisionstring += "\n#define HIGH_PRECISION";
	} else if ( parameters.precision === "mediump" ) {
		precisionstring += "\n#define MEDIUM_PRECISION";
	} else if ( parameters.precision === "lowp" ) {
		precisionstring += "\n#define LOW_PRECISION";
	}
	return precisionstring;
}
function generateShadowMapTypeDefine( parameters ) {
	let shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';
	if ( parameters.shadowMapType === PCFShadowMap ) {
		shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';
	} else if ( parameters.shadowMapType === PCFSoftShadowMap ) {
		shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';
	} else if ( parameters.shadowMapType === VSMShadowMap ) {
		shadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';
	}
	return shadowMapTypeDefine;
}
function generateEnvMapTypeDefine( parameters ) {
	let envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
	if ( parameters.envMap ) {
		switch ( parameters.envMapMode ) {
			case CubeReflectionMapping:
			case CubeRefractionMapping:
				envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
				break;
			case CubeUVReflectionMapping:
			case CubeUVRefractionMapping:
				envMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';
				break;
		}
	}
	return envMapTypeDefine;
}
function generateEnvMapModeDefine( parameters ) {
	let envMapModeDefine = 'ENVMAP_MODE_REFLECTION';
	if ( parameters.envMap ) {
		switch ( parameters.envMapMode ) {
			case CubeRefractionMapping:
			case CubeUVRefractionMapping:
				envMapModeDefine = 'ENVMAP_MODE_REFRACTION';
				break;
		}
	}
	return envMapModeDefine;
}
function generateEnvMapBlendingDefine( parameters ) {
	let envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';
	if ( parameters.envMap ) {
		switch ( parameters.combine ) {
			case MultiplyOperation:
				envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
				break;
			case MixOperation:
				envMapBlendingDefine = 'ENVMAP_BLENDING_MIX';
				break;
			case AddOperation:
				envMapBlendingDefine = 'ENVMAP_BLENDING_ADD';
				break;
		}
	}
	return envMapBlendingDefine;
}
function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {
	const gl = renderer.getContext();
	const defines = parameters.defines;
	let vertexShader = parameters.vertexShader;
	let fragmentShader = parameters.fragmentShader;
	const shadowMapTypeDefine = generateShadowMapTypeDefine( parameters );
	const envMapTypeDefine = generateEnvMapTypeDefine( parameters );
	const envMapModeDefine = generateEnvMapModeDefine( parameters );
	const envMapBlendingDefine = generateEnvMapBlendingDefine( parameters );
	const gammaFactorDefine = ( renderer.gammaFactor > 0 ) ? renderer.gammaFactor : 1.0;
	const customExtensions = parameters.isWebGL2 ? '' : generateExtensions( parameters );
	const customDefines = generateDefines( defines );
	const program = gl.createProgram();
	let prefixVertex, prefixFragment;
	let versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + "\n" : '';
	if ( parameters.isRawShaderMaterial ) {
		prefixVertex = [
			customDefines
		].filter( filterEmptyLine ).join( '\n' );
		if ( prefixVertex.length > 0 ) {
			prefixVertex += '\n';
		}
		prefixFragment = [
			customExtensions,
			customDefines
		].filter( filterEmptyLine ).join( '\n' );
		if ( prefixFragment.length > 0 ) {
			prefixFragment += '\n';
		}
	} else {
		prefixVertex = [
			generatePrecision( parameters ),
			'#define SHADER_NAME ' + parameters.shaderName,
			customDefines,
			parameters.instancing ? '#define USE_INSTANCING' : '',
			parameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '',
			parameters.supportsVertexTextures ? '#define VERTEX_TEXTURES' : '',
			'#define GAMMA_FACTOR ' + gammaFactorDefine,
			'#define MAX_BONES ' + parameters.maxBones,
			( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',
			( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',
			parameters.map ? '#define USE_MAP' : '',
			parameters.envMap ? '#define USE_ENVMAP' : '',
			parameters.envMap ? '#define ' + envMapModeDefine : '',
			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
			parameters.aoMap ? '#define USE_AOMAP' : '',
			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
			parameters.normalMap ? '#define USE_NORMALMAP' : '',
			( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',
			( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',
			parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',
			parameters.displacementMap && parameters.supportsVertexTextures ? '#define USE_DISPLACEMENTMAP' : '',
			parameters.specularMap ? '#define USE_SPECULARMAP' : '',
			parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
			parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
			parameters.vertexTangents ? '#define USE_TANGENT' : '',
			parameters.vertexColors ? '#define USE_COLOR' : '',
			parameters.vertexUvs ? '#define USE_UV' : '',
			parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',
			parameters.flatShading ? '#define FLAT_SHADED' : '',
			parameters.skinning ? '#define USE_SKINNING' : '',
			parameters.useVertexTexture ? '#define BONE_TEXTURE' : '',
			parameters.morphTargets ? '#define USE_MORPHTARGETS' : '',
			parameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '',
			parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
			parameters.flipSided ? '#define FLIP_SIDED' : '',
			parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',
			parameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '',
			parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
			( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',
			'uniform mat4 modelMatrix;',
			'uniform mat4 modelViewMatrix;',
			'uniform mat4 projectionMatrix;',
			'uniform mat4 viewMatrix;',
			'uniform mat3 normalMatrix;',
			'uniform vec3 cameraPosition;',
			'uniform bool isOrthographic;',
			'#ifdef USE_INSTANCING',
			'	attribute mat4 instanceMatrix;',
			'#endif',
			'#ifdef USE_INSTANCING_COLOR',
			'	attribute vec3 instanceColor;',
			'#endif',
			'attribute vec3 position;',
			'attribute vec3 normal;',
			'attribute vec2 uv;',
			'#ifdef USE_TANGENT',
			'	attribute vec4 tangent;',
			'#endif',
			'#ifdef USE_COLOR',
			'	attribute vec3 color;',
			'#endif',
			'#ifdef USE_MORPHTARGETS',
			'	attribute vec3 morphTarget0;',
			'	attribute vec3 morphTarget1;',
			'	attribute vec3 morphTarget2;',
			'	attribute vec3 morphTarget3;',
			'	#ifdef USE_MORPHNORMALS',
			'		attribute vec3 morphNormal0;',
			'		attribute vec3 morphNormal1;',
			'		attribute vec3 morphNormal2;',
			'		attribute vec3 morphNormal3;',
			'	#else',
			'		attribute vec3 morphTarget4;',
			'		attribute vec3 morphTarget5;',
			'		attribute vec3 morphTarget6;',
			'		attribute vec3 morphTarget7;',
			'	#endif',
			'#endif',
			'#ifdef USE_SKINNING',
			'	attribute vec4 skinIndex;',
			'	attribute vec4 skinWeight;',
			'#endif',
			'\n'
		].filter( filterEmptyLine ).join( '\n' );
		prefixFragment = [
			customExtensions,
			generatePrecision( parameters ),
			'#define SHADER_NAME ' + parameters.shaderName,
			customDefines,
			parameters.alphaTest ? '#define ALPHATEST ' + parameters.alphaTest + ( parameters.alphaTest % 1 ? '' : '.0' ) : '',
			'#define GAMMA_FACTOR ' + gammaFactorDefine,
			( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',
			( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',
			parameters.map ? '#define USE_MAP' : '',
			parameters.matcap ? '#define USE_MATCAP' : '',
			parameters.envMap ? '#define USE_ENVMAP' : '',
			parameters.envMap ? '#define ' + envMapTypeDefine : '',
			parameters.envMap ? '#define ' + envMapModeDefine : '',
			parameters.envMap ? '#define ' + envMapBlendingDefine : '',
			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
			parameters.aoMap ? '#define USE_AOMAP' : '',
			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
			parameters.normalMap ? '#define USE_NORMALMAP' : '',
			( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',
			( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',
			parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',
			parameters.specularMap ? '#define USE_SPECULARMAP' : '',
			parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
			parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
			parameters.sheen ? '#define USE_SHEEN' : '',
			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
			parameters.vertexTangents ? '#define USE_TANGENT' : '',
			parameters.vertexColors || parameters.instancingColor ? '#define USE_COLOR' : '',
			parameters.vertexUvs ? '#define USE_UV' : '',
			parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',
			parameters.gradientMap ? '#define USE_GRADIENTMAP' : '',
			parameters.flatShading ? '#define FLAT_SHADED' : '',
			parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
			parameters.flipSided ? '#define FLIP_SIDED' : '',
			parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',
			parameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '',
			parameters.physicallyCorrectLights ? '#define PHYSICALLY_CORRECT_LIGHTS' : '',
			parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
			( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',
			( ( parameters.extensionShaderTextureLOD || parameters.envMap ) && parameters.rendererExtensionShaderTextureLod ) ? '#define TEXTURE_LOD_EXT' : '',
			'uniform mat4 viewMatrix;',
			'uniform vec3 cameraPosition;',
			'uniform bool isOrthographic;',
			( parameters.toneMapping !== NoToneMapping ) ? '#define TONE_MAPPING' : '',
			( parameters.toneMapping !== NoToneMapping ) ? ShaderChunk[ 'tonemapping_pars_fragment' ] : '',
			( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',
			parameters.dithering ? '#define DITHERING' : '',
			ShaderChunk[ 'encodings_pars_fragment' ],
			parameters.map ? getTexelDecodingFunction( 'mapTexelToLinear', parameters.mapEncoding ) : '',
			parameters.matcap ? getTexelDecodingFunction( 'matcapTexelToLinear', parameters.matcapEncoding ) : '',
			parameters.envMap ? getTexelDecodingFunction( 'envMapTexelToLinear', parameters.envMapEncoding ) : '',
			parameters.emissiveMap ? getTexelDecodingFunction( 'emissiveMapTexelToLinear', parameters.emissiveMapEncoding ) : '',
			parameters.lightMap ? getTexelDecodingFunction( 'lightMapTexelToLinear', parameters.lightMapEncoding ) : '',
			getTexelEncodingFunction( 'linearToOutputTexel', parameters.outputEncoding ),
			parameters.depthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '',
			'\n'
		].filter( filterEmptyLine ).join( '\n' );
	}
	vertexShader = resolveIncludes( vertexShader );
	vertexShader = replaceLightNums( vertexShader, parameters );
	vertexShader = replaceClippingPlaneNums( vertexShader, parameters );
	fragmentShader = resolveIncludes( fragmentShader );
	fragmentShader = replaceLightNums( fragmentShader, parameters );
	fragmentShader = replaceClippingPlaneNums( fragmentShader, parameters );
	vertexShader = unrollLoops( vertexShader );
	fragmentShader = unrollLoops( fragmentShader );
	if ( parameters.isWebGL2 && parameters.isRawShaderMaterial !== true ) {
		versionString = '#version 300 es\n';
		prefixVertex = [
			'#define attribute in',
			'#define varying out',
			'#define texture2D texture'
		].join( '\n' ) + '\n' + prefixVertex;
		prefixFragment = [
			'#define varying in',
			( parameters.glslVersion === GLSL3 ) ? '' : 'out highp vec4 pc_fragColor;',
			( parameters.glslVersion === GLSL3 ) ? '' : '#define gl_FragColor pc_fragColor',
			'#define gl_FragDepthEXT gl_FragDepth',
			'#define texture2D texture',
			'#define textureCube texture',
			'#define texture2DProj textureProj',
			'#define texture2DLodEXT textureLod',
			'#define texture2DProjLodEXT textureProjLod',
			'#define textureCubeLodEXT textureLod',
			'#define texture2DGradEXT textureGrad',
			'#define texture2DProjGradEXT textureProjGrad',
			'#define textureCubeGradEXT textureGrad'
		].join( '\n' ) + '\n' + prefixFragment;
	}
	const vertexGlsl = versionString + prefixVertex + vertexShader;
	const fragmentGlsl = versionString + prefixFragment + fragmentShader;
	const glVertexShader = WebGLShader( gl, 35633, vertexGlsl );
	const glFragmentShader = WebGLShader( gl, 35632, fragmentGlsl );
	gl.attachShader( program, glVertexShader );
	gl.attachShader( program, glFragmentShader );
	if ( parameters.index0AttributeName !== undefined ) {
		gl.bindAttribLocation( program, 0, parameters.index0AttributeName );
	} else if ( parameters.morphTargets === true ) {
		gl.bindAttribLocation( program, 0, 'position' );
	}
	gl.linkProgram( program );
	if ( renderer.debug.checkShaderErrors ) {
		const programLog = gl.getProgramInfoLog( program ).trim();
		const vertexLog = gl.getShaderInfoLog( glVertexShader ).trim();
		const fragmentLog = gl.getShaderInfoLog( glFragmentShader ).trim();
		let runnable = true;
		let haveDiagnostics = true;
		if ( gl.getProgramParameter( program, 35714 ) === false ) {
			runnable = false;
			const vertexErrors = getShaderErrors( gl, glVertexShader, 'vertex' );
			const fragmentErrors = getShaderErrors( gl, glFragmentShader, 'fragment' );
			console.error( 'THREE.WebGLProgram: shader error: ', gl.getError(), '35715', gl.getProgramParameter( program, 35715 ), 'gl.getProgramInfoLog', programLog, vertexErrors, fragmentErrors );
		} else if ( programLog !== '' ) {
			console.warn( 'THREE.WebGLProgram: gl.getProgramInfoLog()', programLog );
		} else if ( vertexLog === '' || fragmentLog === '' ) {
			haveDiagnostics = false;
		}
		if ( haveDiagnostics ) {
			this.diagnostics = {
				runnable: runnable,
				programLog: programLog,
				vertexShader: {
					log: vertexLog,
					prefix: prefixVertex
				},
				fragmentShader: {
					log: fragmentLog,
					prefix: prefixFragment
				}
			};
		}
	}
	gl.deleteShader( glVertexShader );
	gl.deleteShader( glFragmentShader );
	let cachedUniforms;
	this.getUniforms = function () {
		if ( cachedUniforms === undefined ) {
			cachedUniforms = new WebGLUniforms( gl, program );
		}
		return cachedUniforms;
	};
	let cachedAttributes;
	this.getAttributes = function () {
		if ( cachedAttributes === undefined ) {
			cachedAttributes = fetchAttributeLocations( gl, program );
		}
		return cachedAttributes;
	};
	this.destroy = function () {
		bindingStates.releaseStatesOfProgram( this );
		gl.deleteProgram( program );
		this.program = undefined;
	};
	this.name = parameters.shaderName;
	this.id = programIdCount ++;
	this.cacheKey = cacheKey;
	this.usedTimes = 1;
	this.program = program;
	this.vertexShader = glVertexShader;
	this.fragmentShader = glFragmentShader;
	return this;
}
function WebGLPrograms( renderer, cubemaps, extensions, capabilities, bindingStates, clipping ) {
	const programs = [];
	const isWebGL2 = capabilities.isWebGL2;
	const logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;
	const floatVertexTextures = capabilities.floatVertexTextures;
	const maxVertexUniforms = capabilities.maxVertexUniforms;
	const vertexTextures = capabilities.vertexTextures;
	let precision = capabilities.precision;
	const shaderIDs = {
		MeshDepthMaterial: 'depth',
		MeshDistanceMaterial: 'distanceRGBA',
		MeshNormalMaterial: 'normal',
		MeshBasicMaterial: 'basic',
		MeshLambertMaterial: 'lambert',
		MeshPhongMaterial: 'phong',
		MeshToonMaterial: 'toon',
		MeshStandardMaterial: 'physical',
		MeshPhysicalMaterial: 'physical',
		MeshMatcapMaterial: 'matcap',
		LineBasicMaterial: 'basic',
		LineDashedMaterial: 'dashed',
		PointsMaterial: 'points',
		ShadowMaterial: 'shadow',
		SpriteMaterial: 'sprite'
	};
	const parameterNames = [
		"precision", "isWebGL2", "supportsVertexTextures", "outputEncoding", "instancing", "instancingColor",
		"map", "mapEncoding", "matcap", "matcapEncoding", "envMap", "envMapMode", "envMapEncoding", "envMapCubeUV",
		"lightMap", "lightMapEncoding", "aoMap", "emissiveMap", "emissiveMapEncoding", "bumpMap", "normalMap", "objectSpaceNormalMap", "tangentSpaceNormalMap", "clearcoatMap", "clearcoatRoughnessMap", "clearcoatNormalMap", "displacementMap", "specularMap",
		"roughnessMap", "metalnessMap", "gradientMap",
		"alphaMap", "combine", "vertexColors", "vertexTangents", "vertexUvs", "uvsVertexOnly", "fog", "useFog", "fogExp2",
		"flatShading", "sizeAttenuation", "logarithmicDepthBuffer", "skinning",
		"maxBones", "useVertexTexture", "morphTargets", "morphNormals",
		"maxMorphTargets", "maxMorphNormals", "premultipliedAlpha",
		"numDirLights", "numPointLights", "numSpotLights", "numHemiLights", "numRectAreaLights",
		"numDirLightShadows", "numPointLightShadows", "numSpotLightShadows",
		"shadowMapEnabled", "shadowMapType", "toneMapping", 'physicallyCorrectLights',
		"alphaTest", "doubleSided", "flipSided", "numClippingPlanes", "numClipIntersection", "depthPacking", "dithering",
		"sheen", "transmissionMap"
	];
	function getMaxBones( object ) {
		const skeleton = object.skeleton;
		const bones = skeleton.bones;
		if ( floatVertexTextures ) {
			return 1024;
		} else {
			const nVertexUniforms = maxVertexUniforms;
			const nVertexMatrices = Math.floor( ( nVertexUniforms - 20 ) / 4 );
			const maxBones = Math.min( nVertexMatrices, bones.length );
			if ( maxBones < bones.length ) {
				console.warn( 'THREE.WebGLRenderer: Skeleton has ' + bones.length + ' bones. This GPU supports ' + maxBones + '.' );
				return 0;
			}
			return maxBones;
		}
	}
	function getTextureEncodingFromMap( map ) {
		let encoding;
		if ( ! map ) {
			encoding = LinearEncoding;
		} else if ( map.isTexture ) {
			encoding = map.encoding;
		} else if ( map.isWebGLRenderTarget ) {
			console.warn( "THREE.WebGLPrograms.getTextureEncodingFromMap: don't use render targets as textures. Use their .texture property instead." );
			encoding = map.texture.encoding;
		}
		return encoding;
	}
	function getParameters( material, lights, shadows, scene, object ) {
		const fog = scene.fog;
		const environment = material.isMeshStandardMaterial ? scene.environment : null;
		const envMap = cubemaps.get( material.envMap || environment );
		const shaderID = shaderIDs[ material.type ];
		const maxBones = object.isSkinnedMesh ? getMaxBones( object ) : 0;
		if ( material.precision !== null ) {
			precision = capabilities.getMaxPrecision( material.precision );
			if ( precision !== material.precision ) {
				console.warn( 'THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.' );
			}
		}
		let vertexShader, fragmentShader;
		if ( shaderID ) {
			const shader = ShaderLib[ shaderID ];
			vertexShader = shader.vertexShader;
			fragmentShader = shader.fragmentShader;
		} else {
			vertexShader = material.vertexShader;
			fragmentShader = material.fragmentShader;
		}
		const currentRenderTarget = renderer.getRenderTarget();
		const parameters = {
			isWebGL2: isWebGL2,
			shaderID: shaderID,
			shaderName: material.type,
			vertexShader: vertexShader,
			fragmentShader: fragmentShader,
			defines: material.defines,
			isRawShaderMaterial: material.isRawShaderMaterial === true,
			glslVersion: material.glslVersion,
			precision: precision,
			instancing: object.isInstancedMesh === true,
			instancingColor: object.isInstancedMesh === true && object.instanceColor !== null,
			supportsVertexTextures: vertexTextures,
			outputEncoding: ( currentRenderTarget !== null ) ? getTextureEncodingFromMap( currentRenderTarget.texture ) : renderer.outputEncoding,
			map: !! material.map,
			mapEncoding: getTextureEncodingFromMap( material.map ),
			matcap: !! material.matcap,
			matcapEncoding: getTextureEncodingFromMap( material.matcap ),
			envMap: !! envMap,
			envMapMode: envMap && envMap.mapping,
			envMapEncoding: getTextureEncodingFromMap( envMap ),
			envMapCubeUV: ( !! envMap ) && ( ( envMap.mapping === CubeUVReflectionMapping ) || ( envMap.mapping === CubeUVRefractionMapping ) ),
			lightMap: !! material.lightMap,
			lightMapEncoding: getTextureEncodingFromMap( material.lightMap ),
			aoMap: !! material.aoMap,
			emissiveMap: !! material.emissiveMap,
			emissiveMapEncoding: getTextureEncodingFromMap( material.emissiveMap ),
			bumpMap: !! material.bumpMap,
			normalMap: !! material.normalMap,
			objectSpaceNormalMap: material.normalMapType === ObjectSpaceNormalMap,
			tangentSpaceNormalMap: material.normalMapType === TangentSpaceNormalMap,
			clearcoatMap: !! material.clearcoatMap,
			clearcoatRoughnessMap: !! material.clearcoatRoughnessMap,
			clearcoatNormalMap: !! material.clearcoatNormalMap,
			displacementMap: !! material.displacementMap,
			roughnessMap: !! material.roughnessMap,
			metalnessMap: !! material.metalnessMap,
			specularMap: !! material.specularMap,
			alphaMap: !! material.alphaMap,
			gradientMap: !! material.gradientMap,
			sheen: !! material.sheen,
			transmissionMap: !! material.transmissionMap,
			combine: material.combine,
			vertexTangents: ( material.normalMap && material.vertexTangents ),
			vertexColors: material.vertexColors,
			vertexUvs: !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatMap || !! material.clearcoatRoughnessMap || !! material.clearcoatNormalMap || !! material.displacementMap || !! material.transmissionMap,
			uvsVertexOnly: ! ( !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatNormalMap || !! material.transmissionMap ) && !! material.displacementMap,
			fog: !! fog,
			useFog: material.fog,
			fogExp2: ( fog && fog.isFogExp2 ),
			flatShading: material.flatShading,
			sizeAttenuation: material.sizeAttenuation,
			logarithmicDepthBuffer: logarithmicDepthBuffer,
			skinning: material.skinning && maxBones > 0,
			maxBones: maxBones,
			useVertexTexture: floatVertexTextures,
			morphTargets: material.morphTargets,
			morphNormals: material.morphNormals,
			maxMorphTargets: renderer.maxMorphTargets,
			maxMorphNormals: renderer.maxMorphNormals,
			numDirLights: lights.directional.length,
			numPointLights: lights.point.length,
			numSpotLights: lights.spot.length,
			numRectAreaLights: lights.rectArea.length,
			numHemiLights: lights.hemi.length,
			numDirLightShadows: lights.directionalShadowMap.length,
			numPointLightShadows: lights.pointShadowMap.length,
			numSpotLightShadows: lights.spotShadowMap.length,
			numClippingPlanes: clipping.numPlanes,
			numClipIntersection: clipping.numIntersection,
			dithering: material.dithering,
			shadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,
			shadowMapType: renderer.shadowMap.type,
			toneMapping: material.toneMapped ? renderer.toneMapping : NoToneMapping,
			physicallyCorrectLights: renderer.physicallyCorrectLights,
			premultipliedAlpha: material.premultipliedAlpha,
			alphaTest: material.alphaTest,
			doubleSided: material.side === DoubleSide,
			flipSided: material.side === BackSide,
			depthPacking: ( material.depthPacking !== undefined ) ? material.depthPacking : false,
			index0AttributeName: material.index0AttributeName,
			extensionDerivatives: material.extensions && material.extensions.derivatives,
			extensionFragDepth: material.extensions && material.extensions.fragDepth,
			extensionDrawBuffers: material.extensions && material.extensions.drawBuffers,
			extensionShaderTextureLOD: material.extensions && material.extensions.shaderTextureLOD,
			rendererExtensionFragDepth: isWebGL2 || extensions.has( 'EXT_frag_depth' ),
			rendererExtensionDrawBuffers: isWebGL2 || extensions.has( 'WEBGL_draw_buffers' ),
			rendererExtensionShaderTextureLod: isWebGL2 || extensions.has( 'EXT_shader_texture_lod' ),
			customProgramCacheKey: material.customProgramCacheKey()
		};
		return parameters;
	}
	function getProgramCacheKey( parameters ) {
		const array = [];
		if ( parameters.shaderID ) {
			array.push( parameters.shaderID );
		} else {
			array.push( parameters.fragmentShader );
			array.push( parameters.vertexShader );
		}
		if ( parameters.defines !== undefined ) {
			for ( const name in parameters.defines ) {
				array.push( name );
				array.push( parameters.defines[ name ] );
			}
		}
		if ( parameters.isRawShaderMaterial === false ) {
			for ( let i = 0; i < parameterNames.length; i ++ ) {
				array.push( parameters[ parameterNames[ i ] ] );
			}
			array.push( renderer.outputEncoding );
			array.push( renderer.gammaFactor );
		}
		array.push( parameters.customProgramCacheKey );
		return array.join();
	}
	function getUniforms( material ) {
		const shaderID = shaderIDs[ material.type ];
		let uniforms;
		if ( shaderID ) {
			const shader = ShaderLib[ shaderID ];
			uniforms = UniformsUtils.clone( shader.uniforms );
		} else {
			uniforms = material.uniforms;
		}
		return uniforms;
	}
	function acquireProgram( parameters, cacheKey ) {
		let program;
		for ( let p = 0, pl = programs.length; p < pl; p ++ ) {
			const preexistingProgram = programs[ p ];
			if ( preexistingProgram.cacheKey === cacheKey ) {
				program = preexistingProgram;
				++ program.usedTimes;
				break;
			}
		}
		if ( program === undefined ) {
			program = new WebGLProgram( renderer, cacheKey, parameters, bindingStates );
			programs.push( program );
		}
		return program;
	}
	function releaseProgram( program ) {
		if ( -- program.usedTimes === 0 ) {
			const i = programs.indexOf( program );
			programs[ i ] = programs[ programs.length - 1 ];
			programs.pop();
			program.destroy();
		}
	}
	return {
		getParameters: getParameters,
		getProgramCacheKey: getProgramCacheKey,
		getUniforms: getUniforms,
		acquireProgram: acquireProgram,
		releaseProgram: releaseProgram,
		programs: programs
	};
}
function WebGLProperties() {
	let properties = new WeakMap();
	function get( object ) {
		let map = properties.get( object );
		if ( map === undefined ) {
			map = {};
			properties.set( object, map );
		}
		return map;
	}
	function remove( object ) {
		properties.delete( object );
	}
	function update( object, key, value ) {
		properties.get( object )[ key ] = value;
	}
	function dispose() {
		properties = new WeakMap();
	}
	return {
		get: get,
		remove: remove,
		update: update,
		dispose: dispose
	};
}
function painterSortStable( a, b ) {
	if ( a.groupOrder !== b.groupOrder ) {
		return a.groupOrder - b.groupOrder;
	} else if ( a.renderOrder !== b.renderOrder ) {
		return a.renderOrder - b.renderOrder;
	} else if ( a.program !== b.program ) {
		return a.program.id - b.program.id;
	} else if ( a.material.id !== b.material.id ) {
		return a.material.id - b.material.id;
	} else if ( a.z !== b.z ) {
		return a.z - b.z;
	} else {
		return a.id - b.id;
	}
}
function reversePainterSortStable( a, b ) {
	if ( a.groupOrder !== b.groupOrder ) {
		return a.groupOrder - b.groupOrder;
	} else if ( a.renderOrder !== b.renderOrder ) {
		return a.renderOrder - b.renderOrder;
	} else if ( a.z !== b.z ) {
		return b.z - a.z;
	} else {
		return a.id - b.id;
	}
}
function WebGLRenderList( properties ) {
	const renderItems = [];
	let renderItemsIndex = 0;
	const opaque = [];
	const transparent = [];
	const defaultProgram = { id: - 1 };
	function init() {
		renderItemsIndex = 0;
		opaque.length = 0;
		transparent.length = 0;
	}
	function getNextRenderItem( object, geometry, material, groupOrder, z, group ) {
		let renderItem = renderItems[ renderItemsIndex ];
		const materialProperties = properties.get( material );
		if ( renderItem === undefined ) {
			renderItem = {
				id: object.id,
				object: object,
				geometry: geometry,
				material: material,
				program: materialProperties.program || defaultProgram,
				groupOrder: groupOrder,
				renderOrder: object.renderOrder,
				z: z,
				group: group
			};
			renderItems[ renderItemsIndex ] = renderItem;
		} else {
			renderItem.id = object.id;
			renderItem.object = object;
			renderItem.geometry = geometry;
			renderItem.material = material;
			renderItem.program = materialProperties.program || defaultProgram;
			renderItem.groupOrder = groupOrder;
			renderItem.renderOrder = object.renderOrder;
			renderItem.z = z;
			renderItem.group = group;
		}
		renderItemsIndex ++;
		return renderItem;
	}
	function push( object, geometry, material, groupOrder, z, group ) {
		const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );
		( material.transparent === true ? transparent : opaque ).push( renderItem );
	}
	function unshift( object, geometry, material, groupOrder, z, group ) {
		const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );
		( material.transparent === true ? transparent : opaque ).unshift( renderItem );
	}
	function sort( customOpaqueSort, customTransparentSort ) {
		if ( opaque.length > 1 ) opaque.sort( customOpaqueSort || painterSortStable );
		if ( transparent.length > 1 ) transparent.sort( customTransparentSort || reversePainterSortStable );
	}
	function finish() {
		for ( let i = renderItemsIndex, il = renderItems.length; i < il; i ++ ) {
			const renderItem = renderItems[ i ];
			if ( renderItem.id === null ) break;
			renderItem.id = null;
			renderItem.object = null;
			renderItem.geometry = null;
			renderItem.material = null;
			renderItem.program = null;
			renderItem.group = null;
		}
	}
	return {
		opaque: opaque,
		transparent: transparent,
		init: init,
		push: push,
		unshift: unshift,
		finish: finish,
		sort: sort
	};
}
function WebGLRenderLists( properties ) {
	let lists = new WeakMap();
	function get( scene, camera ) {
		const cameras = lists.get( scene );
		let list;
		if ( cameras === undefined ) {
			list = new WebGLRenderList( properties );
			lists.set( scene, new WeakMap() );
			lists.get( scene ).set( camera, list );
		} else {
			list = cameras.get( camera );
			if ( list === undefined ) {
				list = new WebGLRenderList( properties );
				cameras.set( camera, list );
			}
		}
		return list;
	}
	function dispose() {
		lists = new WeakMap();
	}
	return {
		get: get,
		dispose: dispose
	};
}
function UniformsCache() {
	const lights = {};
	return {
		get: function ( light ) {
			if ( lights[ light.id ] !== undefined ) {
				return lights[ light.id ];
			}
			let uniforms;
			switch ( light.type ) {
				case 'DirectionalLight':
					uniforms = {
						direction: new Vector3(),
						color: new Color()
					};
					break;
				case 'SpotLight':
					uniforms = {
						position: new Vector3(),
						direction: new Vector3(),
						color: new Color(),
						distance: 0,
						coneCos: 0,
						penumbraCos: 0,
						decay: 0
					};
					break;
				case 'PointLight':
					uniforms = {
						position: new Vector3(),
						color: new Color(),
						distance: 0,
						decay: 0
					};
					break;
				case 'HemisphereLight':
					uniforms = {
						direction: new Vector3(),
						skyColor: new Color(),
						groundColor: new Color()
					};
					break;
				case 'RectAreaLight':
					uniforms = {
						color: new Color(),
						position: new Vector3(),
						halfWidth: new Vector3(),
						halfHeight: new Vector3()
					};
					break;
			}
			lights[ light.id ] = uniforms;
			return uniforms;
		}
	};
}
function ShadowUniformsCache() {
	const lights = {};
	return {
		get: function ( light ) {
			if ( lights[ light.id ] !== undefined ) {
				return lights[ light.id ];
			}
			let uniforms;
			switch ( light.type ) {
				case 'DirectionalLight':
					uniforms = {
						shadowBias: 0,
						shadowNormalBias: 0,
						shadowRadius: 1,
						shadowMapSize: new Vector2()
					};
					break;
				case 'SpotLight':
					uniforms = {
						shadowBias: 0,
						shadowNormalBias: 0,
						shadowRadius: 1,
						shadowMapSize: new Vector2()
					};
					break;
				case 'PointLight':
					uniforms = {
						shadowBias: 0,
						shadowNormalBias: 0,
						shadowRadius: 1,
						shadowMapSize: new Vector2(),
						shadowCameraNear: 1,
						shadowCameraFar: 1000
					};
					break;
			}
			lights[ light.id ] = uniforms;
			return uniforms;
		}
	};
}
let nextVersion = 0;
function shadowCastingLightsFirst( lightA, lightB ) {
	return ( lightB.castShadow ? 1 : 0 ) - ( lightA.castShadow ? 1 : 0 );
}
function WebGLLights() {
	const cache = new UniformsCache();
	const shadowCache = ShadowUniformsCache();
	const state = {
		version: 0,
		hash: {
			directionalLength: - 1,
			pointLength: - 1,
			spotLength: - 1,
			rectAreaLength: - 1,
			hemiLength: - 1,
			numDirectionalShadows: - 1,
			numPointShadows: - 1,
			numSpotShadows: - 1
		},
		ambient: [ 0, 0, 0 ],
		probe: [],
		directional: [],
		directionalShadow: [],
		directionalShadowMap: [],
		directionalShadowMatrix: [],
		spot: [],
		spotShadow: [],
		spotShadowMap: [],
		spotShadowMatrix: [],
		rectArea: [],
		rectAreaLTC1: null,
		rectAreaLTC2: null,
		point: [],
		pointShadow: [],
		pointShadowMap: [],
		pointShadowMatrix: [],
		hemi: []
	};
	for ( let i = 0; i < 9; i ++ ) state.probe.push( new Vector3() );
	const vector3 = new Vector3();
	const matrix4 = new Matrix4();
	const matrix42 = new Matrix4();
	function setup( lights, shadows, camera ) {
		let r = 0, g = 0, b = 0;
		for ( let i = 0; i < 9; i ++ ) state.probe[ i ].set( 0, 0, 0 );
		let directionalLength = 0;
		let pointLength = 0;
		let spotLength = 0;
		let rectAreaLength = 0;
		let hemiLength = 0;
		let numDirectionalShadows = 0;
		let numPointShadows = 0;
		let numSpotShadows = 0;
		const viewMatrix = camera.matrixWorldInverse;
		lights.sort( shadowCastingLightsFirst );
		for ( let i = 0, l = lights.length; i < l; i ++ ) {
			const light = lights[ i ];
			const color = light.color;
			const intensity = light.intensity;
			const distance = light.distance;
			const shadowMap = ( light.shadow && light.shadow.map ) ? light.shadow.map.texture : null;
			if ( light.isAmbientLight ) {
				r += color.r * intensity;
				g += color.g * intensity;
				b += color.b * intensity;
			} else if ( light.isLightProbe ) {
				for ( let j = 0; j < 9; j ++ ) {
					state.probe[ j ].addScaledVector( light.sh.coefficients[ j ], intensity );
				}
			} else if ( light.isDirectionalLight ) {
				const uniforms = cache.get( light );
				uniforms.color.copy( light.color ).multiplyScalar( light.intensity );
				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
				vector3.setFromMatrixPosition( light.target.matrixWorld );
				uniforms.direction.sub( vector3 );
				uniforms.direction.transformDirection( viewMatrix );
				if ( light.castShadow ) {
					const shadow = light.shadow;
					const shadowUniforms = shadowCache.get( light );
					shadowUniforms.shadowBias = shadow.bias;
					shadowUniforms.shadowNormalBias = shadow.normalBias;
					shadowUniforms.shadowRadius = shadow.radius;
					shadowUniforms.shadowMapSize = shadow.mapSize;
					state.directionalShadow[ directionalLength ] = shadowUniforms;
					state.directionalShadowMap[ directionalLength ] = shadowMap;
					state.directionalShadowMatrix[ directionalLength ] = light.shadow.matrix;
					numDirectionalShadows ++;
				}
				state.directional[ directionalLength ] = uniforms;
				directionalLength ++;
			} else if ( light.isSpotLight ) {
				const uniforms = cache.get( light );
				uniforms.position.setFromMatrixPosition( light.matrixWorld );
				uniforms.position.applyMatrix4( viewMatrix );
				uniforms.color.copy( color ).multiplyScalar( intensity );
				uniforms.distance = distance;
				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
				vector3.setFromMatrixPosition( light.target.matrixWorld );
				uniforms.direction.sub( vector3 );
				uniforms.direction.transformDirection( viewMatrix );
				uniforms.coneCos = Math.cos( light.angle );
				uniforms.penumbraCos = Math.cos( light.angle * ( 1 - light.penumbra ) );
				uniforms.decay = light.decay;
				if ( light.castShadow ) {
					const shadow = light.shadow;
					const shadowUniforms = shadowCache.get( light );
					shadowUniforms.shadowBias = shadow.bias;
					shadowUniforms.shadowNormalBias = shadow.normalBias;
					shadowUniforms.shadowRadius = shadow.radius;
					shadowUniforms.shadowMapSize = shadow.mapSize;
					state.spotShadow[ spotLength ] = shadowUniforms;
					state.spotShadowMap[ spotLength ] = shadowMap;
					state.spotShadowMatrix[ spotLength ] = light.shadow.matrix;
					numSpotShadows ++;
				}
				state.spot[ spotLength ] = uniforms;
				spotLength ++;
			} else if ( light.isRectAreaLight ) {
				const uniforms = cache.get( light );
				uniforms.color.copy( color ).multiplyScalar( intensity );
				uniforms.position.setFromMatrixPosition( light.matrixWorld );
				uniforms.position.applyMatrix4( viewMatrix );
				matrix42.identity();
				matrix4.copy( light.matrixWorld );
				matrix4.premultiply( viewMatrix );
				matrix42.extractRotation( matrix4 );
				uniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );
				uniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );
				uniforms.halfWidth.applyMatrix4( matrix42 );
				uniforms.halfHeight.applyMatrix4( matrix42 );
				state.rectArea[ rectAreaLength ] = uniforms;
				rectAreaLength ++;
			} else if ( light.isPointLight ) {
				const uniforms = cache.get( light );
				uniforms.position.setFromMatrixPosition( light.matrixWorld );
				uniforms.position.applyMatrix4( viewMatrix );
				uniforms.color.copy( light.color ).multiplyScalar( light.intensity );
				uniforms.distance = light.distance;
				uniforms.decay = light.decay;
				if ( light.castShadow ) {
					const shadow = light.shadow;
					const shadowUniforms = shadowCache.get( light );
					shadowUniforms.shadowBias = shadow.bias;
					shadowUniforms.shadowNormalBias = shadow.normalBias;
					shadowUniforms.shadowRadius = shadow.radius;
					shadowUniforms.shadowMapSize = shadow.mapSize;
					shadowUniforms.shadowCameraNear = shadow.camera.near;
					shadowUniforms.shadowCameraFar = shadow.camera.far;
					state.pointShadow[ pointLength ] = shadowUniforms;
					state.pointShadowMap[ pointLength ] = shadowMap;
					state.pointShadowMatrix[ pointLength ] = light.shadow.matrix;
					numPointShadows ++;
				}
				state.point[ pointLength ] = uniforms;
				pointLength ++;
			} else if ( light.isHemisphereLight ) {
				const uniforms = cache.get( light );
				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
				uniforms.direction.transformDirection( viewMatrix );
				uniforms.direction.normalize();
				uniforms.skyColor.copy( light.color ).multiplyScalar( intensity );
				uniforms.groundColor.copy( light.groundColor ).multiplyScalar( intensity );
				state.hemi[ hemiLength ] = uniforms;
				hemiLength ++;
			}
		}
		if ( rectAreaLength > 0 ) {
			state.rectAreaLTC1 = UniformsLib.LTC_1;
			state.rectAreaLTC2 = UniformsLib.LTC_2;
		}
		state.ambient[ 0 ] = r;
		state.ambient[ 1 ] = g;
		state.ambient[ 2 ] = b;
		const hash = state.hash;
		if ( hash.directionalLength !== directionalLength ||
			hash.pointLength !== pointLength ||
			hash.spotLength !== spotLength ||
			hash.rectAreaLength !== rectAreaLength ||
			hash.hemiLength !== hemiLength ||
			hash.numDirectionalShadows !== numDirectionalShadows ||
			hash.numPointShadows !== numPointShadows ||
			hash.numSpotShadows !== numSpotShadows ) {
			state.directional.length = directionalLength;
			state.spot.length = spotLength;
			state.rectArea.length = rectAreaLength;
			state.point.length = pointLength;
			state.hemi.length = hemiLength;
			state.directionalShadow.length = numDirectionalShadows;
			state.directionalShadowMap.length = numDirectionalShadows;
			state.pointShadow.length = numPointShadows;
			state.pointShadowMap.length = numPointShadows;
			state.spotShadow.length = numSpotShadows;
			state.spotShadowMap.length = numSpotShadows;
			state.directionalShadowMatrix.length = numDirectionalShadows;
			state.pointShadowMatrix.length = numPointShadows;
			state.spotShadowMatrix.length = numSpotShadows;
			hash.directionalLength = directionalLength;
			hash.pointLength = pointLength;
			hash.spotLength = spotLength;
			hash.rectAreaLength = rectAreaLength;
			hash.hemiLength = hemiLength;
			hash.numDirectionalShadows = numDirectionalShadows;
			hash.numPointShadows = numPointShadows;
			hash.numSpotShadows = numSpotShadows;
			state.version = nextVersion ++;
		}
	}
	return {
		setup: setup,
		state: state
	};
}
function WebGLRenderState() {
	const lights = new WebGLLights();
	const lightsArray = [];
	const shadowsArray = [];
	function init() {
		lightsArray.length = 0;
		shadowsArray.length = 0;
	}
	function pushLight( light ) {
		lightsArray.push( light );
	}
	function pushShadow( shadowLight ) {
		shadowsArray.push( shadowLight );
	}
	function setupLights( camera ) {
		lights.setup( lightsArray, shadowsArray, camera );
	}
	const state = {
		lightsArray: lightsArray,
		shadowsArray: shadowsArray,
		lights: lights
	};
	return {
		init: init,
		state: state,
		setupLights: setupLights,
		pushLight: pushLight,
		pushShadow: pushShadow
	};
}
function WebGLRenderStates() {
	let renderStates = new WeakMap();
	function get( scene, camera ) {
		let renderState;
		if ( renderStates.has( scene ) === false ) {
			renderState = new WebGLRenderState();
			renderStates.set( scene, new WeakMap() );
			renderStates.get( scene ).set( camera, renderState );
		} else {
			if ( renderStates.get( scene ).has( camera ) === false ) {
				renderState = new WebGLRenderState();
				renderStates.get( scene ).set( camera, renderState );
			} else {
				renderState = renderStates.get( scene ).get( camera );
			}
		}
		return renderState;
	}
	function dispose() {
		renderStates = new WeakMap();
	}
	return {
		get: get,
		dispose: dispose
	};
}
function MeshDepthMaterial( parameters ) {
	Material.call( this );
	this.type = 'MeshDepthMaterial';
	this.depthPacking = BasicDepthPacking;
	this.skinning = false;
	this.morphTargets = false;
	this.map = null;
	this.alphaMap = null;
	this.displacementMap = null;
	this.displacementScale = 1;
	this.displacementBias = 0;
	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.fog = false;
	this.setValues( parameters );
}
MeshDepthMaterial.prototype = Object.create( Material.prototype );
MeshDepthMaterial.prototype.constructor = MeshDepthMaterial;
MeshDepthMaterial.prototype.isMeshDepthMaterial = true;
MeshDepthMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.depthPacking = source.depthPacking;
	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.map = source.map;
	this.alphaMap = source.alphaMap;
	this.displacementMap = source.displacementMap;
	this.displacementScale = source.displacementScale;
	this.displacementBias = source.displacementBias;
	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	return this;
};
function MeshDistanceMaterial( parameters ) {
	Material.call( this );
	this.type = 'MeshDistanceMaterial';
	this.referencePosition = new Vector3();
	this.nearDistance = 1;
	this.farDistance = 1000;
	this.skinning = false;
	this.morphTargets = false;
	this.map = null;
	this.alphaMap = null;
	this.displacementMap = null;
	this.displacementScale = 1;
	this.displacementBias = 0;
	this.fog = false;
	this.setValues( parameters );
}
MeshDistanceMaterial.prototype = Object.create( Material.prototype );
MeshDistanceMaterial.prototype.constructor = MeshDistanceMaterial;
MeshDistanceMaterial.prototype.isMeshDistanceMaterial = true;
MeshDistanceMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.referencePosition.copy( source.referencePosition );
	this.nearDistance = source.nearDistance;
	this.farDistance = source.farDistance;
	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.map = source.map;
	this.alphaMap = source.alphaMap;
	this.displacementMap = source.displacementMap;
	this.displacementScale = source.displacementScale;
	this.displacementBias = source.displacementBias;
	return this;
};
var vsm_frag = "uniform sampler2D shadow_pass;\nuniform vec2 resolution;\nuniform float radius;\n#include <packing>\nvoid main() {\n\tfloat mean = 0.0;\n\tfloat squared_mean = 0.0;\n\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy ) / resolution ) );\n\tfor ( float i = -1.0; i < 1.0 ; i += SAMPLE_RATE) {\n\t\t#ifdef HORIZONAL_PASS\n\t\t\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( i, 0.0 ) * radius ) / resolution ) );\n\t\t\tmean += distribution.x;\n\t\t\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\n\t\t#else\n\t\t\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, i ) * radius ) / resolution ) );\n\t\t\tmean += depth;\n\t\t\tsquared_mean += depth * depth;\n\t\t#endif\n\t}\n\tmean = mean * HALF_SAMPLE_RATE;\n\tsquared_mean = squared_mean * HALF_SAMPLE_RATE;\n\tfloat std_dev = sqrt( squared_mean - mean * mean );\n\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\n}";
var vsm_vert = "void main() {\n\tgl_Position = vec4( position, 1.0 );\n}";
function WebGLShadowMap( _renderer, _objects, maxTextureSize ) {
	let _frustum = new Frustum();
	const _shadowMapSize = new Vector2(),
		_viewportSize = new Vector2(),
		_viewport = new Vector4(),
		_depthMaterials = [],
		_distanceMaterials = [],
		_materialCache = {};
	const shadowSide = { 0: BackSide, 1: FrontSide, 2: DoubleSide };
	const shadowMaterialVertical = new ShaderMaterial( {
		defines: {
			SAMPLE_RATE: 2.0 / 8.0,
			HALF_SAMPLE_RATE: 1.0 / 8.0
		},
		uniforms: {
			shadow_pass: { value: null },
			resolution: { value: new Vector2() },
			radius: { value: 4.0 }
		},
		vertexShader: vsm_vert,
		fragmentShader: vsm_frag
	} );
	const shadowMaterialHorizonal = shadowMaterialVertical.clone();
	shadowMaterialHorizonal.defines.HORIZONAL_PASS = 1;
	const fullScreenTri = new BufferGeometry();
	fullScreenTri.setAttribute(
		"position",
		new BufferAttribute(
			new Float32Array( [ - 1, - 1, 0.5, 3, - 1, 0.5, - 1, 3, 0.5 ] ),
			3
		)
	);
	const fullScreenMesh = new Mesh( fullScreenTri, shadowMaterialVertical );
	const scope = this;
	this.enabled = false;
	this.autoUpdate = true;
	this.needsUpdate = false;
	this.type = PCFShadowMap;
	this.render = function ( lights, scene, camera ) {
		if ( scope.enabled === false ) return;
		if ( scope.autoUpdate === false && scope.needsUpdate === false ) return;
		if ( lights.length === 0 ) return;
		const currentRenderTarget = _renderer.getRenderTarget();
		const activeCubeFace = _renderer.getActiveCubeFace();
		const activeMipmapLevel = _renderer.getActiveMipmapLevel();
		const _state = _renderer.state;
		_state.setBlending( NoBlending );
		_state.buffers.color.setClear( 1, 1, 1, 1 );
		_state.buffers.depth.setTest( true );
		_state.setScissorTest( false );
		for ( let i = 0, il = lights.length; i < il; i ++ ) {
			const light = lights[ i ];
			const shadow = light.shadow;
			if ( shadow.autoUpdate === false && shadow.needsUpdate === false ) continue;
			if ( shadow === undefined ) {
				console.warn( 'THREE.WebGLShadowMap:', light, 'has no shadow.' );
				continue;
			}
			_shadowMapSize.copy( shadow.mapSize );
			const shadowFrameExtents = shadow.getFrameExtents();
			_shadowMapSize.multiply( shadowFrameExtents );
			_viewportSize.copy( shadow.mapSize );
			if ( _shadowMapSize.x > maxTextureSize || _shadowMapSize.y > maxTextureSize ) {
				if ( _shadowMapSize.x > maxTextureSize ) {
					_viewportSize.x = Math.floor( maxTextureSize / shadowFrameExtents.x );
					_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;
					shadow.mapSize.x = _viewportSize.x;
				}
				if ( _shadowMapSize.y > maxTextureSize ) {
					_viewportSize.y = Math.floor( maxTextureSize / shadowFrameExtents.y );
					_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;
					shadow.mapSize.y = _viewportSize.y;
				}
			}
			if ( shadow.map === null && ! shadow.isPointLightShadow && this.type === VSMShadowMap ) {
				const pars = { minFilter: LinearFilter, magFilter: LinearFilter, format: RGBAFormat };
				shadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
				shadow.map.texture.name = light.name + ".shadowMap";
				shadow.mapPass = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
				shadow.camera.updateProjectionMatrix();
			}
			if ( shadow.map === null ) {
				const pars = { minFilter: NearestFilter, magFilter: NearestFilter, format: RGBAFormat };
				shadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
				shadow.map.texture.name = light.name + ".shadowMap";
				shadow.camera.updateProjectionMatrix();
			}
			_renderer.setRenderTarget( shadow.map );
			_renderer.clear();
			const viewportCount = shadow.getViewportCount();
			for ( let vp = 0; vp < viewportCount; vp ++ ) {
				const viewport = shadow.getViewport( vp );
				_viewport.set(
					_viewportSize.x * viewport.x,
					_viewportSize.y * viewport.y,
					_viewportSize.x * viewport.z,
					_viewportSize.y * viewport.w
				);
				_state.viewport( _viewport );
				shadow.updateMatrices( light, vp );
				_frustum = shadow.getFrustum();
				renderObject( scene, camera, shadow.camera, light, this.type );
			}
			if ( ! shadow.isPointLightShadow && this.type === VSMShadowMap ) {
				VSMPass( shadow, camera );
			}
			shadow.needsUpdate = false;
		}
		scope.needsUpdate = false;
		_renderer.setRenderTarget( currentRenderTarget, activeCubeFace, activeMipmapLevel );
	};
	function VSMPass( shadow, camera ) {
		const geometry = _objects.update( fullScreenMesh );
		shadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;
		shadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;
		shadowMaterialVertical.uniforms.radius.value = shadow.radius;
		_renderer.setRenderTarget( shadow.mapPass );
		_renderer.clear();
		_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null );
		shadowMaterialHorizonal.uniforms.shadow_pass.value = shadow.mapPass.texture;
		shadowMaterialHorizonal.uniforms.resolution.value = shadow.mapSize;
		shadowMaterialHorizonal.uniforms.radius.value = shadow.radius;
		_renderer.setRenderTarget( shadow.map );
		_renderer.clear();
		_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialHorizonal, fullScreenMesh, null );
	}
	function getDepthMaterialVariant( useMorphing, useSkinning, useInstancing ) {
		const index = useMorphing << 0 | useSkinning << 1 | useInstancing << 2;
		let material = _depthMaterials[ index ];
		if ( material === undefined ) {
			material = new MeshDepthMaterial( {
				depthPacking: RGBADepthPacking,
				morphTargets: useMorphing,
				skinning: useSkinning
			} );
			_depthMaterials[ index ] = material;
		}
		return material;
	}
	function getDistanceMaterialVariant( useMorphing, useSkinning, useInstancing ) {
		const index = useMorphing << 0 | useSkinning << 1 | useInstancing << 2;
		let material = _distanceMaterials[ index ];
		if ( material === undefined ) {
			material = new MeshDistanceMaterial( {
				morphTargets: useMorphing,
				skinning: useSkinning
			} );
			_distanceMaterials[ index ] = material;
		}
		return material;
	}
	function getDepthMaterial( object, geometry, material, light, shadowCameraNear, shadowCameraFar, type ) {
		let result = null;
		let getMaterialVariant = getDepthMaterialVariant;
		let customMaterial = object.customDepthMaterial;
		if ( light.isPointLight === true ) {
			getMaterialVariant = getDistanceMaterialVariant;
			customMaterial = object.customDistanceMaterial;
		}
		if ( customMaterial === undefined ) {
			let useMorphing = false;
			if ( material.morphTargets === true ) {
				useMorphing = geometry.morphAttributes && geometry.morphAttributes.position && geometry.morphAttributes.position.length > 0;
			}
			let useSkinning = false;
			if ( object.isSkinnedMesh === true ) {
				if ( material.skinning === true ) {
					useSkinning = true;
				} else {
					console.warn( 'THREE.WebGLShadowMap: THREE.SkinnedMesh with material.skinning set to false:', object );
				}
			}
			const useInstancing = object.isInstancedMesh === true;
			result = getMaterialVariant( useMorphing, useSkinning, useInstancing );
		} else {
			result = customMaterial;
		}
		if ( _renderer.localClippingEnabled &&
				material.clipShadows === true &&
				material.clippingPlanes.length !== 0 ) {
			const keyA = result.uuid, keyB = material.uuid;
			let materialsForVariant = _materialCache[ keyA ];
			if ( materialsForVariant === undefined ) {
				materialsForVariant = {};
				_materialCache[ keyA ] = materialsForVariant;
			}
			let cachedMaterial = materialsForVariant[ keyB ];
			if ( cachedMaterial === undefined ) {
				cachedMaterial = result.clone();
				materialsForVariant[ keyB ] = cachedMaterial;
			}
			result = cachedMaterial;
		}
		result.visible = material.visible;
		result.wireframe = material.wireframe;
		if ( type === VSMShadowMap ) {
			result.side = ( material.shadowSide !== null ) ? material.shadowSide : material.side;
		} else {
			result.side = ( material.shadowSide !== null ) ? material.shadowSide : shadowSide[ material.side ];
		}
		result.clipShadows = material.clipShadows;
		result.clippingPlanes = material.clippingPlanes;
		result.clipIntersection = material.clipIntersection;
		result.wireframeLinewidth = material.wireframeLinewidth;
		result.linewidth = material.linewidth;
		if ( light.isPointLight === true && result.isMeshDistanceMaterial === true ) {
			result.referencePosition.setFromMatrixPosition( light.matrixWorld );
			result.nearDistance = shadowCameraNear;
			result.farDistance = shadowCameraFar;
		}
		return result;
	}
	function renderObject( object, camera, shadowCamera, light, type ) {
		if ( object.visible === false ) return;
		const visible = object.layers.test( camera.layers );
		if ( visible && ( object.isMesh || object.isLine || object.isPoints ) ) {
			if ( ( object.castShadow || ( object.receiveShadow && type === VSMShadowMap ) ) && ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) ) {
				object.modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );
				const geometry = _objects.update( object );
				const material = object.material;
				if ( Array.isArray( material ) ) {
					const groups = geometry.groups;
					for ( let k = 0, kl = groups.length; k < kl; k ++ ) {
						const group = groups[ k ];
						const groupMaterial = material[ group.materialIndex ];
						if ( groupMaterial && groupMaterial.visible ) {
							const depthMaterial = getDepthMaterial( object, geometry, groupMaterial, light, shadowCamera.near, shadowCamera.far, type );
							_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, group );
						}
					}
				} else if ( material.visible ) {
					const depthMaterial = getDepthMaterial( object, geometry, material, light, shadowCamera.near, shadowCamera.far, type );
					_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, null );
				}
			}
		}
		const children = object.children;
		for ( let i = 0, l = children.length; i < l; i ++ ) {
			renderObject( children[ i ], camera, shadowCamera, light, type );
		}
	}
}
function WebGLState( gl, extensions, capabilities ) {
	const isWebGL2 = capabilities.isWebGL2;
	function ColorBuffer() {
		let locked = false;
		const color = new Vector4();
		let currentColorMask = null;
		const currentColorClear = new Vector4( 0, 0, 0, 0 );
		return {
			setMask: function ( colorMask ) {
				if ( currentColorMask !== colorMask && ! locked ) {
					gl.colorMask( colorMask, colorMask, colorMask, colorMask );
					currentColorMask = colorMask;
				}
			},
			setLocked: function ( lock ) {
				locked = lock;
			},
			setClear: function ( r, g, b, a, premultipliedAlpha ) {
				if ( premultipliedAlpha === true ) {
					r *= a; g *= a; b *= a;
				}
				color.set( r, g, b, a );
				if ( currentColorClear.equals( color ) === false ) {
					gl.clearColor( r, g, b, a );
					currentColorClear.copy( color );
				}
			},
			reset: function () {
				locked = false;
				currentColorMask = null;
				currentColorClear.set( - 1, 0, 0, 0 );
			}
		};
	}
	function DepthBuffer() {
		let locked = false;
		let currentDepthMask = null;
		let currentDepthFunc = null;
		let currentDepthClear = null;
		return {
			setTest: function ( depthTest ) {
				if ( depthTest ) {
					enable( 2929 );
				} else {
					disable( 2929 );
				}
			},
			setMask: function ( depthMask ) {
				if ( currentDepthMask !== depthMask && ! locked ) {
					gl.depthMask( depthMask );
					currentDepthMask = depthMask;
				}
			},
			setFunc: function ( depthFunc ) {
				if ( currentDepthFunc !== depthFunc ) {
					if ( depthFunc ) {
						switch ( depthFunc ) {
							case NeverDepth:
								gl.depthFunc( 512 );
								break;
							case AlwaysDepth:
								gl.depthFunc( 519 );
								break;
							case LessDepth:
								gl.depthFunc( 513 );
								break;
							case LessEqualDepth:
								gl.depthFunc( 515 );
								break;
							case EqualDepth:
								gl.depthFunc( 514 );
								break;
							case GreaterEqualDepth:
								gl.depthFunc( 518 );
								break;
							case GreaterDepth:
								gl.depthFunc( 516 );
								break;
							case NotEqualDepth:
								gl.depthFunc( 517 );
								break;
							default:
								gl.depthFunc( 515 );
						}
					} else {
						gl.depthFunc( 515 );
					}
					currentDepthFunc = depthFunc;
				}
			},
			setLocked: function ( lock ) {
				locked = lock;
			},
			setClear: function ( depth ) {
				if ( currentDepthClear !== depth ) {
					gl.clearDepth( depth );
					currentDepthClear = depth;
				}
			},
			reset: function () {
				locked = false;
				currentDepthMask = null;
				currentDepthFunc = null;
				currentDepthClear = null;
			}
		};
	}
	function StencilBuffer() {
		let locked = false;
		let currentStencilMask = null;
		let currentStencilFunc = null;
		let currentStencilRef = null;
		let currentStencilFuncMask = null;
		let currentStencilFail = null;
		let currentStencilZFail = null;
		let currentStencilZPass = null;
		let currentStencilClear = null;
		return {
			setTest: function ( stencilTest ) {
				if ( ! locked ) {
					if ( stencilTest ) {
						enable( 2960 );
					} else {
						disable( 2960 );
					}
				}
			},
			setMask: function ( stencilMask ) {
				if ( currentStencilMask !== stencilMask && ! locked ) {
					gl.stencilMask( stencilMask );
					currentStencilMask = stencilMask;
				}
			},
			setFunc: function ( stencilFunc, stencilRef, stencilMask ) {
				if ( currentStencilFunc !== stencilFunc ||
				     currentStencilRef !== stencilRef ||
				     currentStencilFuncMask !== stencilMask ) {
					gl.stencilFunc( stencilFunc, stencilRef, stencilMask );
					currentStencilFunc = stencilFunc;
					currentStencilRef = stencilRef;
					currentStencilFuncMask = stencilMask;
				}
			},
			setOp: function ( stencilFail, stencilZFail, stencilZPass ) {
				if ( currentStencilFail !== stencilFail ||
				     currentStencilZFail !== stencilZFail ||
				     currentStencilZPass !== stencilZPass ) {
					gl.stencilOp( stencilFail, stencilZFail, stencilZPass );
					currentStencilFail = stencilFail;
					currentStencilZFail = stencilZFail;
					currentStencilZPass = stencilZPass;
				}
			},
			setLocked: function ( lock ) {
				locked = lock;
			},
			setClear: function ( stencil ) {
				if ( currentStencilClear !== stencil ) {
					gl.clearStencil( stencil );
					currentStencilClear = stencil;
				}
			},
			reset: function () {
				locked = false;
				currentStencilMask = null;
				currentStencilFunc = null;
				currentStencilRef = null;
				currentStencilFuncMask = null;
				currentStencilFail = null;
				currentStencilZFail = null;
				currentStencilZPass = null;
				currentStencilClear = null;
			}
		};
	}
	const colorBuffer = new ColorBuffer();
	const depthBuffer = new DepthBuffer();
	const stencilBuffer = new StencilBuffer();
	let enabledCapabilities = {};
	let currentProgram = null;
	let currentBlendingEnabled = null;
	let currentBlending = null;
	let currentBlendEquation = null;
	let currentBlendSrc = null;
	let currentBlendDst = null;
	let currentBlendEquationAlpha = null;
	let currentBlendSrcAlpha = null;
	let currentBlendDstAlpha = null;
	let currentPremultipledAlpha = false;
	let currentFlipSided = null;
	let currentCullFace = null;
	let currentLineWidth = null;
	let currentPolygonOffsetFactor = null;
	let currentPolygonOffsetUnits = null;
	const maxTextures = gl.getParameter( 35661 );
	let lineWidthAvailable = false;
	let version = 0;
	const glVersion = gl.getParameter( 7938 );
	if ( glVersion.indexOf( 'WebGL' ) !== - 1 ) {
		version = parseFloat( /^WebGL\ ([0-9])/.exec( glVersion )[ 1 ] );
		lineWidthAvailable = ( version >= 1.0 );
	} else if ( glVersion.indexOf( 'OpenGL ES' ) !== - 1 ) {
		version = parseFloat( /^OpenGL\ ES\ ([0-9])/.exec( glVersion )[ 1 ] );
		lineWidthAvailable = ( version >= 2.0 );
	}
	let currentTextureSlot = null;
	let currentBoundTextures = {};
	const currentScissor = new Vector4();
	const currentViewport = new Vector4();
	function createTexture( type, target, count ) {
		const data = new Uint8Array( 4 );
		const texture = gl.createTexture();
		gl.bindTexture( type, texture );
		gl.texParameteri( type, 10241, 9728 );
		gl.texParameteri( type, 10240, 9728 );
		for ( let i = 0; i < count; i ++ ) {
			gl.texImage2D( target + i, 0, 6408, 1, 1, 0, 6408, 5121, data );
		}
		return texture;
	}
	const emptyTextures = {};
	emptyTextures[ 3553 ] = createTexture( 3553, 3553, 1 );
	emptyTextures[ 34067 ] = createTexture( 34067, 34069, 6 );
	colorBuffer.setClear( 0, 0, 0, 1 );
	depthBuffer.setClear( 1 );
	stencilBuffer.setClear( 0 );
	enable( 2929 );
	depthBuffer.setFunc( LessEqualDepth );
	setFlipSided( false );
	setCullFace( CullFaceBack );
	enable( 2884 );
	setBlending( NoBlending );
	function enable( id ) {
		if ( enabledCapabilities[ id ] !== true ) {
			gl.enable( id );
			enabledCapabilities[ id ] = true;
		}
	}
	function disable( id ) {
		if ( enabledCapabilities[ id ] !== false ) {
			gl.disable( id );
			enabledCapabilities[ id ] = false;
		}
	}
	function useProgram( program ) {
		if ( currentProgram !== program ) {
			gl.useProgram( program );
			currentProgram = program;
			return true;
		}
		return false;
	}
	const equationToGL = {
		[ AddEquation ]: 32774,
		[ SubtractEquation ]: 32778,
		[ ReverseSubtractEquation ]: 32779
	};
	if ( isWebGL2 ) {
		equationToGL[ MinEquation ] = 32775;
		equationToGL[ MaxEquation ] = 32776;
	} else {
		const extension = extensions.get( 'EXT_blend_minmax' );
		if ( extension !== null ) {
			equationToGL[ MinEquation ] = extension.MIN_EXT;
			equationToGL[ MaxEquation ] = extension.MAX_EXT;
		}
	}
	const factorToGL = {
		[ ZeroFactor ]: 0,
		[ OneFactor ]: 1,
		[ SrcColorFactor ]: 768,
		[ SrcAlphaFactor ]: 770,
		[ SrcAlphaSaturateFactor ]: 776,
		[ DstColorFactor ]: 774,
		[ DstAlphaFactor ]: 772,
		[ OneMinusSrcColorFactor ]: 769,
		[ OneMinusSrcAlphaFactor ]: 771,
		[ OneMinusDstColorFactor ]: 775,
		[ OneMinusDstAlphaFactor ]: 773
	};
	function setBlending( blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha ) {
		if ( blending === NoBlending ) {
			if ( currentBlendingEnabled ) {
				disable( 3042 );
				currentBlendingEnabled = false;
			}
			return;
		}
		if ( ! currentBlendingEnabled ) {
			enable( 3042 );
			currentBlendingEnabled = true;
		}
		if ( blending !== CustomBlending ) {
			if ( blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha ) {
				if ( currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation ) {
					gl.blendEquation( 32774 );
					currentBlendEquation = AddEquation;
					currentBlendEquationAlpha = AddEquation;
				}
				if ( premultipliedAlpha ) {
					switch ( blending ) {
						case NormalBlending:
							gl.blendFuncSeparate( 1, 771, 1, 771 );
							break;
						case AdditiveBlending:
							gl.blendFunc( 1, 1 );
							break;
						case SubtractiveBlending:
							gl.blendFuncSeparate( 0, 0, 769, 771 );
							break;
						case MultiplyBlending:
							gl.blendFuncSeparate( 0, 768, 0, 770 );
							break;
						default:
							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
							break;
					}
				} else {
					switch ( blending ) {
						case NormalBlending:
							gl.blendFuncSeparate( 770, 771, 1, 771 );
							break;
						case AdditiveBlending:
							gl.blendFunc( 770, 1 );
							break;
						case SubtractiveBlending:
							gl.blendFunc( 0, 769 );
							break;
						case MultiplyBlending:
							gl.blendFunc( 0, 768 );
							break;
						default:
							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
							break;
					}
				}
				currentBlendSrc = null;
				currentBlendDst = null;
				currentBlendSrcAlpha = null;
				currentBlendDstAlpha = null;
				currentBlending = blending;
				currentPremultipledAlpha = premultipliedAlpha;
			}
			return;
		}
		blendEquationAlpha = blendEquationAlpha || blendEquation;
		blendSrcAlpha = blendSrcAlpha || blendSrc;
		blendDstAlpha = blendDstAlpha || blendDst;
		if ( blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha ) {
			gl.blendEquationSeparate( equationToGL[ blendEquation ], equationToGL[ blendEquationAlpha ] );
			currentBlendEquation = blendEquation;
			currentBlendEquationAlpha = blendEquationAlpha;
		}
		if ( blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha ) {
			gl.blendFuncSeparate( factorToGL[ blendSrc ], factorToGL[ blendDst ], factorToGL[ blendSrcAlpha ], factorToGL[ blendDstAlpha ] );
			currentBlendSrc = blendSrc;
			currentBlendDst = blendDst;
			currentBlendSrcAlpha = blendSrcAlpha;
			currentBlendDstAlpha = blendDstAlpha;
		}
		currentBlending = blending;
		currentPremultipledAlpha = null;
	}
	function setMaterial( material, frontFaceCW ) {
		material.side === DoubleSide
			? disable( 2884 )
			: enable( 2884 );
		let flipSided = ( material.side === BackSide );
		if ( frontFaceCW ) flipSided = ! flipSided;
		setFlipSided( flipSided );
		( material.blending === NormalBlending && material.transparent === false )
			? setBlending( NoBlending )
			: setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha );
		depthBuffer.setFunc( material.depthFunc );
		depthBuffer.setTest( material.depthTest );
		depthBuffer.setMask( material.depthWrite );
		colorBuffer.setMask( material.colorWrite );
		const stencilWrite = material.stencilWrite;
		stencilBuffer.setTest( stencilWrite );
		if ( stencilWrite ) {
			stencilBuffer.setMask( material.stencilWriteMask );
			stencilBuffer.setFunc( material.stencilFunc, material.stencilRef, material.stencilFuncMask );
			stencilBuffer.setOp( material.stencilFail, material.stencilZFail, material.stencilZPass );
		}
		setPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );
	}
	function setFlipSided( flipSided ) {
		if ( currentFlipSided !== flipSided ) {
			if ( flipSided ) {
				gl.frontFace( 2304 );
			} else {
				gl.frontFace( 2305 );
			}
			currentFlipSided = flipSided;
		}
	}
	function setCullFace( cullFace ) {
		if ( cullFace !== CullFaceNone ) {
			enable( 2884 );
			if ( cullFace !== currentCullFace ) {
				if ( cullFace === CullFaceBack ) {
					gl.cullFace( 1029 );
				} else if ( cullFace === CullFaceFront ) {
					gl.cullFace( 1028 );
				} else {
					gl.cullFace( 1032 );
				}
			}
		} else {
			disable( 2884 );
		}
		currentCullFace = cullFace;
	}
	function setLineWidth( width ) {
		if ( width !== currentLineWidth ) {
			if ( lineWidthAvailable ) gl.lineWidth( width );
			currentLineWidth = width;
		}
	}
	function setPolygonOffset( polygonOffset, factor, units ) {
		if ( polygonOffset ) {
			enable( 32823 );
			if ( currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units ) {
				gl.polygonOffset( factor, units );
				currentPolygonOffsetFactor = factor;
				currentPolygonOffsetUnits = units;
			}
		} else {
			disable( 32823 );
		}
	}
	function setScissorTest( scissorTest ) {
		if ( scissorTest ) {
			enable( 3089 );
		} else {
			disable( 3089 );
		}
	}
	function activeTexture( webglSlot ) {
		if ( webglSlot === undefined ) webglSlot = 33984 + maxTextures - 1;
		if ( currentTextureSlot !== webglSlot ) {
			gl.activeTexture( webglSlot );
			currentTextureSlot = webglSlot;
		}
	}
	function bindTexture( webglType, webglTexture ) {
		if ( currentTextureSlot === null ) {
			activeTexture();
		}
		let boundTexture = currentBoundTextures[ currentTextureSlot ];
		if ( boundTexture === undefined ) {
			boundTexture = { type: undefined, texture: undefined };
			currentBoundTextures[ currentTextureSlot ] = boundTexture;
		}
		if ( boundTexture.type !== webglType || boundTexture.texture !== webglTexture ) {
			gl.bindTexture( webglType, webglTexture || emptyTextures[ webglType ] );
			boundTexture.type = webglType;
			boundTexture.texture = webglTexture;
		}
	}
	function unbindTexture() {
		const boundTexture = currentBoundTextures[ currentTextureSlot ];
		if ( boundTexture !== undefined && boundTexture.type !== undefined ) {
			gl.bindTexture( boundTexture.type, null );
			boundTexture.type = undefined;
			boundTexture.texture = undefined;
		}
	}
	function compressedTexImage2D() {
		try {
			gl.compressedTexImage2D.apply( gl, arguments );
		} catch ( error ) {
			console.error( 'THREE.WebGLState:', error );
		}
	}
	function texImage2D() {
		try {
			gl.texImage2D.apply( gl, arguments );
		} catch ( error ) {
			console.error( 'THREE.WebGLState:', error );
		}
	}
	function texImage3D() {
		try {
			gl.texImage3D.apply( gl, arguments );
		} catch ( error ) {
			console.error( 'THREE.WebGLState:', error );
		}
	}
	function scissor( scissor ) {
		if ( currentScissor.equals( scissor ) === false ) {
			gl.scissor( scissor.x, scissor.y, scissor.z, scissor.w );
			currentScissor.copy( scissor );
		}
	}
	function viewport( viewport ) {
		if ( currentViewport.equals( viewport ) === false ) {
			gl.viewport( viewport.x, viewport.y, viewport.z, viewport.w );
			currentViewport.copy( viewport );
		}
	}
	function reset() {
		enabledCapabilities = {};
		currentTextureSlot = null;
		currentBoundTextures = {};
		currentProgram = null;
		currentBlending = null;
		currentFlipSided = null;
		currentCullFace = null;
		colorBuffer.reset();
		depthBuffer.reset();
		stencilBuffer.reset();
	}
	return {
		buffers: {
			color: colorBuffer,
			depth: depthBuffer,
			stencil: stencilBuffer
		},
		enable: enable,
		disable: disable,
		useProgram: useProgram,
		setBlending: setBlending,
		setMaterial: setMaterial,
		setFlipSided: setFlipSided,
		setCullFace: setCullFace,
		setLineWidth: setLineWidth,
		setPolygonOffset: setPolygonOffset,
		setScissorTest: setScissorTest,
		activeTexture: activeTexture,
		bindTexture: bindTexture,
		unbindTexture: unbindTexture,
		compressedTexImage2D: compressedTexImage2D,
		texImage2D: texImage2D,
		texImage3D: texImage3D,
		scissor: scissor,
		viewport: viewport,
		reset: reset
	};
}
function WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) {
	const isWebGL2 = capabilities.isWebGL2;
	const maxTextures = capabilities.maxTextures;
	const maxCubemapSize = capabilities.maxCubemapSize;
	const maxTextureSize = capabilities.maxTextureSize;
	const maxSamples = capabilities.maxSamples;
	const _videoTextures = new WeakMap();
	let _canvas;
	let useOffscreenCanvas = false;
	try {
		useOffscreenCanvas = typeof OffscreenCanvas !== 'undefined'
			&& ( new OffscreenCanvas( 1, 1 ).getContext( "2d" ) ) !== null;
	} catch ( err ) {
	}
	function createCanvas( width, height ) {
		return useOffscreenCanvas ?
			new OffscreenCanvas( width, height ) :
			document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
	}
	function resizeImage( image, needsPowerOfTwo, needsNewCanvas, maxSize ) {
		let scale = 1;
		if ( image.width > maxSize || image.height > maxSize ) {
			scale = maxSize / Math.max( image.width, image.height );
		}
		if ( scale < 1 || needsPowerOfTwo === true ) {
			if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
				( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
				( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {
				const floor = needsPowerOfTwo ? MathUtils.floorPowerOfTwo : Math.floor;
				const width = floor( scale * image.width );
				const height = floor( scale * image.height );
				if ( _canvas === undefined ) _canvas = createCanvas( width, height );
				const canvas = needsNewCanvas ? createCanvas( width, height ) : _canvas;
				canvas.width = width;
				canvas.height = height;
				const context = canvas.getContext( '2d' );
				context.drawImage( image, 0, 0, width, height );
				console.warn( 'THREE.WebGLRenderer: Texture has been resized from (' + image.width + 'x' + image.height + ') to (' + width + 'x' + height + ').' );
				return canvas;
			} else {
				if ( 'data' in image ) {
					console.warn( 'THREE.WebGLRenderer: Image in DataTexture is too big (' + image.width + 'x' + image.height + ').' );
				}
				return image;
			}
		}
		return image;
	}
	function isPowerOfTwo( image ) {
		return MathUtils.isPowerOfTwo( image.width ) && MathUtils.isPowerOfTwo( image.height );
	}
	function textureNeedsPowerOfTwo( texture ) {
		if ( isWebGL2 ) return false;
		return ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) ||
			( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter );
	}
	function textureNeedsGenerateMipmaps( texture, supportsMips ) {
		return texture.generateMipmaps && supportsMips &&
			texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
	}
	function generateMipmap( target, texture, width, height ) {
		_gl.generateMipmap( target );
		const textureProperties = properties.get( texture );
		textureProperties.__maxMipLevel = Math.log( Math.max( width, height ) ) * Math.LOG2E;
	}
	function getInternalFormat( internalFormatName, glFormat, glType ) {
		if ( isWebGL2 === false ) return glFormat;
		if ( internalFormatName !== null ) {
			if ( _gl[ internalFormatName ] !== undefined ) return _gl[ internalFormatName ];
			console.warn( 'THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \'' + internalFormatName + '\'' );
		}
		let internalFormat = glFormat;
		if ( glFormat === 6403 ) {
			if ( glType === 5126 ) internalFormat = 33326;
			if ( glType === 5131 ) internalFormat = 33325;
			if ( glType === 5121 ) internalFormat = 33321;
		}
		if ( glFormat === 6407 ) {
			if ( glType === 5126 ) internalFormat = 34837;
			if ( glType === 5131 ) internalFormat = 34843;
			if ( glType === 5121 ) internalFormat = 32849;
		}
		if ( glFormat === 6408 ) {
			if ( glType === 5126 ) internalFormat = 34836;
			if ( glType === 5131 ) internalFormat = 34842;
			if ( glType === 5121 ) internalFormat = 32856;
		}
		if ( internalFormat === 33325 || internalFormat === 33326 ||
			internalFormat === 34842 || internalFormat === 34836 ) {
			extensions.get( 'EXT_color_buffer_float' );
		}
		return internalFormat;
	}
	function filterFallback( f ) {
		if ( f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter ) {
			return 9728;
		}
		return 9729;
	}
	function onTextureDispose( event ) {
		const texture = event.target;
		texture.removeEventListener( 'dispose', onTextureDispose );
		deallocateTexture( texture );
		if ( texture.isVideoTexture ) {
			_videoTextures.delete( texture );
		}
		info.memory.textures --;
	}
	function onRenderTargetDispose( event ) {
		const renderTarget = event.target;
		renderTarget.removeEventListener( 'dispose', onRenderTargetDispose );
		deallocateRenderTarget( renderTarget );
		info.memory.textures --;
	}
	function deallocateTexture( texture ) {
		const textureProperties = properties.get( texture );
		if ( textureProperties.__webglInit === undefined ) return;
		_gl.deleteTexture( textureProperties.__webglTexture );
		properties.remove( texture );
	}
	function deallocateRenderTarget( renderTarget ) {
		const renderTargetProperties = properties.get( renderTarget );
		const textureProperties = properties.get( renderTarget.texture );
		if ( ! renderTarget ) return;
		if ( textureProperties.__webglTexture !== undefined ) {
			_gl.deleteTexture( textureProperties.__webglTexture );
		}
		if ( renderTarget.depthTexture ) {
			renderTarget.depthTexture.dispose();
		}
		if ( renderTarget.isWebGLCubeRenderTarget ) {
			for ( let i = 0; i < 6; i ++ ) {
				_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );
				if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );
			}
		} else {
			_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );
			if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );
			if ( renderTargetProperties.__webglMultisampledFramebuffer ) _gl.deleteFramebuffer( renderTargetProperties.__webglMultisampledFramebuffer );
			if ( renderTargetProperties.__webglColorRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglColorRenderbuffer );
			if ( renderTargetProperties.__webglDepthRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthRenderbuffer );
		}
		properties.remove( renderTarget.texture );
		properties.remove( renderTarget );
	}
	let textureUnits = 0;
	function resetTextureUnits() {
		textureUnits = 0;
	}
	function allocateTextureUnit() {
		const textureUnit = textureUnits;
		if ( textureUnit >= maxTextures ) {
			console.warn( 'THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + maxTextures );
		}
		textureUnits += 1;
		return textureUnit;
	}
	function setTexture2D( texture, slot ) {
		const textureProperties = properties.get( texture );
		if ( texture.isVideoTexture ) updateVideoTexture( texture );
		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
			const image = texture.image;
			if ( image === undefined ) {
				console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is undefined' );
			} else if ( image.complete === false ) {
				console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete' );
			} else {
				uploadTexture( textureProperties, texture, slot );
				return;
			}
		}
		state.activeTexture( 33984 + slot );
		state.bindTexture( 3553, textureProperties.__webglTexture );
	}
	function setTexture2DArray( texture, slot ) {
		const textureProperties = properties.get( texture );
		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
			uploadTexture( textureProperties, texture, slot );
			return;
		}
		state.activeTexture( 33984 + slot );
		state.bindTexture( 35866, textureProperties.__webglTexture );
	}
	function setTexture3D( texture, slot ) {
		const textureProperties = properties.get( texture );
		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
			uploadTexture( textureProperties, texture, slot );
			return;
		}
		state.activeTexture( 33984 + slot );
		state.bindTexture( 32879, textureProperties.__webglTexture );
	}
	function setTextureCube( texture, slot ) {
		if ( texture.image.length !== 6 ) return;
		const textureProperties = properties.get( texture );
		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
			initTexture( textureProperties, texture );
			state.activeTexture( 33984 + slot );
			state.bindTexture( 34067, textureProperties.__webglTexture );
			_gl.pixelStorei( 37440, texture.flipY );
			const isCompressed = ( texture && ( texture.isCompressedTexture || texture.image[ 0 ].isCompressedTexture ) );
			const isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture );
			const cubeImage = [];
			for ( let i = 0; i < 6; i ++ ) {
				if ( ! isCompressed && ! isDataTexture ) {
					cubeImage[ i ] = resizeImage( texture.image[ i ], false, true, maxCubemapSize );
				} else {
					cubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ];
				}
			}
			const image = cubeImage[ 0 ],
				supportsMips = isPowerOfTwo( image ) || isWebGL2,
				glFormat = utils.convert( texture.format ),
				glType = utils.convert( texture.type ),
				glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType );
			setTextureParameters( 34067, texture, supportsMips );
			let mipmaps;
			if ( isCompressed ) {
				for ( let i = 0; i < 6; i ++ ) {
					mipmaps = cubeImage[ i ].mipmaps;
					for ( let j = 0; j < mipmaps.length; j ++ ) {
						const mipmap = mipmaps[ j ];
						if ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {
							if ( glFormat !== null ) {
								state.compressedTexImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );
							} else {
								console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' );
							}
						} else {
							state.texImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
						}
					}
				}
				textureProperties.__maxMipLevel = mipmaps.length - 1;
			} else {
				mipmaps = texture.mipmaps;
				for ( let i = 0; i < 6; i ++ ) {
					if ( isDataTexture ) {
						state.texImage2D( 34069 + i, 0, glInternalFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data );
						for ( let j = 0; j < mipmaps.length; j ++ ) {
							const mipmap = mipmaps[ j ];
							const mipmapImage = mipmap.image[ i ].image;
							state.texImage2D( 34069 + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data );
						}
					} else {
						state.texImage2D( 34069 + i, 0, glInternalFormat, glFormat, glType, cubeImage[ i ] );
						for ( let j = 0; j < mipmaps.length; j ++ ) {
							const mipmap = mipmaps[ j ];
							state.texImage2D( 34069 + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[ i ] );
						}
					}
				}
				textureProperties.__maxMipLevel = mipmaps.length;
			}
			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {
				generateMipmap( 34067, texture, image.width, image.height );
			}
			textureProperties.__version = texture.version;
			if ( texture.onUpdate ) texture.onUpdate( texture );
		} else {
			state.activeTexture( 33984 + slot );
			state.bindTexture( 34067, textureProperties.__webglTexture );
		}
	}
	function setTextureCubeDynamic( texture, slot ) {
		state.activeTexture( 33984 + slot );
		state.bindTexture( 34067, properties.get( texture ).__webglTexture );
	}
	const wrappingToGL = {
		[ RepeatWrapping ]: 10497,
		[ ClampToEdgeWrapping ]: 33071,
		[ MirroredRepeatWrapping ]: 33648
	};
	const filterToGL = {
		[ NearestFilter ]: 9728,
		[ NearestMipmapNearestFilter ]: 9984,
		[ NearestMipmapLinearFilter ]: 9986,
		[ LinearFilter ]: 9729,
		[ LinearMipmapNearestFilter ]: 9985,
		[ LinearMipmapLinearFilter ]: 9987
	};
	function setTextureParameters( textureType, texture, supportsMips ) {
		if ( supportsMips ) {
			_gl.texParameteri( textureType, 10242, wrappingToGL[ texture.wrapS ] );
			_gl.texParameteri( textureType, 10243, wrappingToGL[ texture.wrapT ] );
			if ( textureType === 32879 || textureType === 35866 ) {
				_gl.texParameteri( textureType, 32882, wrappingToGL[ texture.wrapR ] );
			}
			_gl.texParameteri( textureType, 10240, filterToGL[ texture.magFilter ] );
			_gl.texParameteri( textureType, 10241, filterToGL[ texture.minFilter ] );
		} else {
			_gl.texParameteri( textureType, 10242, 33071 );
			_gl.texParameteri( textureType, 10243, 33071 );
			if ( textureType === 32879 || textureType === 35866 ) {
				_gl.texParameteri( textureType, 32882, 33071 );
			}
			if ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) {
				console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.' );
			}
			_gl.texParameteri( textureType, 10240, filterFallback( texture.magFilter ) );
			_gl.texParameteri( textureType, 10241, filterFallback( texture.minFilter ) );
			if ( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) {
				console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.' );
			}
		}
		const extension = extensions.get( 'EXT_texture_filter_anisotropic' );
		if ( extension ) {
			if ( texture.type === FloatType && extensions.get( 'OES_texture_float_linear' ) === null ) return;
			if ( texture.type === HalfFloatType && ( isWebGL2 || extensions.get( 'OES_texture_half_float_linear' ) ) === null ) return;
			if ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) {
				_gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) );
				properties.get( texture ).__currentAnisotropy = texture.anisotropy;
			}
		}
	}
	function initTexture( textureProperties, texture ) {
		if ( textureProperties.__webglInit === undefined ) {
			textureProperties.__webglInit = true;
			texture.addEventListener( 'dispose', onTextureDispose );
			textureProperties.__webglTexture = _gl.createTexture();
			info.memory.textures ++;
		}
	}
	function uploadTexture( textureProperties, texture, slot ) {
		let textureType = 3553;
		if ( texture.isDataTexture2DArray ) textureType = 35866;
		if ( texture.isDataTexture3D ) textureType = 32879;
		initTexture( textureProperties, texture );
		state.activeTexture( 33984 + slot );
		state.bindTexture( textureType, textureProperties.__webglTexture );
		_gl.pixelStorei( 37440, texture.flipY );
		_gl.pixelStorei( 37441, texture.premultiplyAlpha );
		_gl.pixelStorei( 3317, texture.unpackAlignment );
		const needsPowerOfTwo = textureNeedsPowerOfTwo( texture ) && isPowerOfTwo( texture.image ) === false;
		const image = resizeImage( texture.image, needsPowerOfTwo, false, maxTextureSize );
		const supportsMips = isPowerOfTwo( image ) || isWebGL2,
			glFormat = utils.convert( texture.format );
		let glType = utils.convert( texture.type ),
			glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType );
		setTextureParameters( textureType, texture, supportsMips );
		let mipmap;
		const mipmaps = texture.mipmaps;
		if ( texture.isDepthTexture ) {
			glInternalFormat = 6402;
			if ( isWebGL2 ) {
				if ( texture.type === FloatType ) {
					glInternalFormat = 36012;
				} else if ( texture.type === UnsignedIntType ) {
					glInternalFormat = 33190;
				} else if ( texture.type === UnsignedInt248Type ) {
					glInternalFormat = 35056;
				} else {
					glInternalFormat = 33189;
				}
			} else {
				if ( texture.type === FloatType ) {
					console.error( 'WebGLRenderer: Floating point depth texture requires WebGL2.' );
				}
			}
			if ( texture.format === DepthFormat && glInternalFormat === 6402 ) {
				if ( texture.type !== UnsignedShortType && texture.type !== UnsignedIntType ) {
					console.warn( 'THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.' );
					texture.type = UnsignedShortType;
					glType = utils.convert( texture.type );
				}
			}
			if ( texture.format === DepthStencilFormat && glInternalFormat === 6402 ) {
				glInternalFormat = 34041;
				if ( texture.type !== UnsignedInt248Type ) {
					console.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );
					texture.type = UnsignedInt248Type;
					glType = utils.convert( texture.type );
				}
			}
			state.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null );
		} else if ( texture.isDataTexture ) {
			if ( mipmaps.length > 0 && supportsMips ) {
				for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {
					mipmap = mipmaps[ i ];
					state.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
				}
				texture.generateMipmaps = false;
				textureProperties.__maxMipLevel = mipmaps.length - 1;
			} else {
				state.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data );
				textureProperties.__maxMipLevel = 0;
			}
		} else if ( texture.isCompressedTexture ) {
			for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {
				mipmap = mipmaps[ i ];
				if ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {
					if ( glFormat !== null ) {
						state.compressedTexImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );
					} else {
						console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );
					}
				} else {
					state.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
				}
			}
			textureProperties.__maxMipLevel = mipmaps.length - 1;
		} else if ( texture.isDataTexture2DArray ) {
			state.texImage3D( 35866, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );
			textureProperties.__maxMipLevel = 0;
		} else if ( texture.isDataTexture3D ) {
			state.texImage3D( 32879, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );
			textureProperties.__maxMipLevel = 0;
		} else {
			if ( mipmaps.length > 0 && supportsMips ) {
				for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {
					mipmap = mipmaps[ i ];
					state.texImage2D( 3553, i, glInternalFormat, glFormat, glType, mipmap );
				}
				texture.generateMipmaps = false;
				textureProperties.__maxMipLevel = mipmaps.length - 1;
			} else {
				state.texImage2D( 3553, 0, glInternalFormat, glFormat, glType, image );
				textureProperties.__maxMipLevel = 0;
			}
		}
		if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {
			generateMipmap( textureType, texture, image.width, image.height );
		}
		textureProperties.__version = texture.version;
		if ( texture.onUpdate ) texture.onUpdate( texture );
	}
	function setupFrameBufferTexture( framebuffer, renderTarget, attachment, textureTarget ) {
		const glFormat = utils.convert( renderTarget.texture.format );
		const glType = utils.convert( renderTarget.texture.type );
		const glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );
		state.texImage2D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null );
		_gl.bindFramebuffer( 36160, framebuffer );
		_gl.framebufferTexture2D( 36160, attachment, textureTarget, properties.get( renderTarget.texture ).__webglTexture, 0 );
		_gl.bindFramebuffer( 36160, null );
	}
	function setupRenderBufferStorage( renderbuffer, renderTarget, isMultisample ) {
		_gl.bindRenderbuffer( 36161, renderbuffer );
		if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {
			let glInternalFormat = 33189;
			if ( isMultisample ) {
				const depthTexture = renderTarget.depthTexture;
				if ( depthTexture && depthTexture.isDepthTexture ) {
					if ( depthTexture.type === FloatType ) {
						glInternalFormat = 36012;
					} else if ( depthTexture.type === UnsignedIntType ) {
						glInternalFormat = 33190;
					}
				}
				const samples = getRenderTargetSamples( renderTarget );
				_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );
			} else {
				_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );
			}
			_gl.framebufferRenderbuffer( 36160, 36096, 36161, renderbuffer );
		} else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) {
			if ( isMultisample ) {
				const samples = getRenderTargetSamples( renderTarget );
				_gl.renderbufferStorageMultisample( 36161, samples, 35056, renderTarget.width, renderTarget.height );
			} else {
				_gl.renderbufferStorage( 36161, 34041, renderTarget.width, renderTarget.height );
			}
			_gl.framebufferRenderbuffer( 36160, 33306, 36161, renderbuffer );
		} else {
			const glFormat = utils.convert( renderTarget.texture.format );
			const glType = utils.convert( renderTarget.texture.type );
			const glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );
			if ( isMultisample ) {
				const samples = getRenderTargetSamples( renderTarget );
				_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );
			} else {
				_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );
			}
		}
		_gl.bindRenderbuffer( 36161, null );
	}
	function setupDepthTexture( framebuffer, renderTarget ) {
		const isCube = ( renderTarget && renderTarget.isWebGLCubeRenderTarget );
		if ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' );
		_gl.bindFramebuffer( 36160, framebuffer );
		if ( ! ( renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture ) ) {
			throw new Error( 'renderTarget.depthTexture must be an instance of THREE.DepthTexture' );
		}
		if ( ! properties.get( renderTarget.depthTexture ).__webglTexture ||
				renderTarget.depthTexture.image.width !== renderTarget.width ||
				renderTarget.depthTexture.image.height !== renderTarget.height ) {
			renderTarget.depthTexture.image.width = renderTarget.width;
			renderTarget.depthTexture.image.height = renderTarget.height;
			renderTarget.depthTexture.needsUpdate = true;
		}
		setTexture2D( renderTarget.depthTexture, 0 );
		const webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;
		if ( renderTarget.depthTexture.format === DepthFormat ) {
			_gl.framebufferTexture2D( 36160, 36096, 3553, webglDepthTexture, 0 );
		} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {
			_gl.framebufferTexture2D( 36160, 33306, 3553, webglDepthTexture, 0 );
		} else {
			throw new Error( 'Unknown depthTexture format' );
		}
	}
	function setupDepthRenderbuffer( renderTarget ) {
		const renderTargetProperties = properties.get( renderTarget );
		const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );
		if ( renderTarget.depthTexture ) {
			if ( isCube ) throw new Error( 'target.depthTexture not supported in Cube render targets' );
			setupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget );
		} else {
			if ( isCube ) {
				renderTargetProperties.__webglDepthbuffer = [];
				for ( let i = 0; i < 6; i ++ ) {
					_gl.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer[ i ] );
					renderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer();
					setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget, false );
				}
			} else {
				_gl.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer );
				renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
				setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget, false );
			}
		}
		_gl.bindFramebuffer( 36160, null );
	}
	function setupRenderTarget( renderTarget ) {
		const renderTargetProperties = properties.get( renderTarget );
		const textureProperties = properties.get( renderTarget.texture );
		renderTarget.addEventListener( 'dispose', onRenderTargetDispose );
		textureProperties.__webglTexture = _gl.createTexture();
		info.memory.textures ++;
		const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );
		const isMultisample = ( renderTarget.isWebGLMultisampleRenderTarget === true );
		const supportsMips = isPowerOfTwo( renderTarget ) || isWebGL2;
		if ( isWebGL2 && renderTarget.texture.format === RGBFormat && ( renderTarget.texture.type === FloatType || renderTarget.texture.type === HalfFloatType ) ) {
			renderTarget.texture.format = RGBAFormat;
			console.warn( 'THREE.WebGLRenderer: Rendering to textures with RGB format is not supported. Using RGBA format instead.' );
		}
		if ( isCube ) {
			renderTargetProperties.__webglFramebuffer = [];
			for ( let i = 0; i < 6; i ++ ) {
				renderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer();
			}
		} else {
			renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();
			if ( isMultisample ) {
				if ( isWebGL2 ) {
					renderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();
					renderTargetProperties.__webglColorRenderbuffer = _gl.createRenderbuffer();
					_gl.bindRenderbuffer( 36161, renderTargetProperties.__webglColorRenderbuffer );
					const glFormat = utils.convert( renderTarget.texture.format );
					const glType = utils.convert( renderTarget.texture.type );
					const glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );
					const samples = getRenderTargetSamples( renderTarget );
					_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );
					_gl.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );
					_gl.framebufferRenderbuffer( 36160, 36064, 36161, renderTargetProperties.__webglColorRenderbuffer );
					_gl.bindRenderbuffer( 36161, null );
					if ( renderTarget.depthBuffer ) {
						renderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();
						setupRenderBufferStorage( renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true );
					}
					_gl.bindFramebuffer( 36160, null );
				} else {
					console.warn( 'THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.' );
				}
			}
		}
		if ( isCube ) {
			state.bindTexture( 34067, textureProperties.__webglTexture );
			setTextureParameters( 34067, renderTarget.texture, supportsMips );
			for ( let i = 0; i < 6; i ++ ) {
				setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, 36064, 34069 + i );
			}
			if ( textureNeedsGenerateMipmaps( renderTarget.texture, supportsMips ) ) {
				generateMipmap( 34067, renderTarget.texture, renderTarget.width, renderTarget.height );
			}
			state.bindTexture( 34067, null );
		} else {
			state.bindTexture( 3553, textureProperties.__webglTexture );
			setTextureParameters( 3553, renderTarget.texture, supportsMips );
			setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, 36064, 3553 );
			if ( textureNeedsGenerateMipmaps( renderTarget.texture, supportsMips ) ) {
				generateMipmap( 3553, renderTarget.texture, renderTarget.width, renderTarget.height );
			}
			state.bindTexture( 3553, null );
		}
		if ( renderTarget.depthBuffer ) {
			setupDepthRenderbuffer( renderTarget );
		}
	}
	function updateRenderTargetMipmap( renderTarget ) {
		const texture = renderTarget.texture;
		const supportsMips = isPowerOfTwo( renderTarget ) || isWebGL2;
		if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {
			const target = renderTarget.isWebGLCubeRenderTarget ? 34067 : 3553;
			const webglTexture = properties.get( texture ).__webglTexture;
			state.bindTexture( target, webglTexture );
			generateMipmap( target, texture, renderTarget.width, renderTarget.height );
			state.bindTexture( target, null );
		}
	}
	function updateMultisampleRenderTarget( renderTarget ) {
		if ( renderTarget.isWebGLMultisampleRenderTarget ) {
			if ( isWebGL2 ) {
				const renderTargetProperties = properties.get( renderTarget );
				_gl.bindFramebuffer( 36008, renderTargetProperties.__webglMultisampledFramebuffer );
				_gl.bindFramebuffer( 36009, renderTargetProperties.__webglFramebuffer );
				const width = renderTarget.width;
				const height = renderTarget.height;
				let mask = 16384;
				if ( renderTarget.depthBuffer ) mask |= 256;
				if ( renderTarget.stencilBuffer ) mask |= 1024;
				_gl.blitFramebuffer( 0, 0, width, height, 0, 0, width, height, mask, 9728 );
				_gl.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );
			} else {
				console.warn( 'THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.' );
			}
		}
	}
	function getRenderTargetSamples( renderTarget ) {
		return ( isWebGL2 && renderTarget.isWebGLMultisampleRenderTarget ) ?
			Math.min( maxSamples, renderTarget.samples ) : 0;
	}
	function updateVideoTexture( texture ) {
		const frame = info.render.frame;
		if ( _videoTextures.get( texture ) !== frame ) {
			_videoTextures.set( texture, frame );
			texture.update();
		}
	}
	let warnedTexture2D = false;
	let warnedTextureCube = false;
	function safeSetTexture2D( texture, slot ) {
		if ( texture && texture.isWebGLRenderTarget ) {
			if ( warnedTexture2D === false ) {
				console.warn( "THREE.WebGLTextures.safeSetTexture2D: don't use render targets as textures. Use their .texture property instead." );
				warnedTexture2D = true;
			}
			texture = texture.texture;
		}
		setTexture2D( texture, slot );
	}
	function safeSetTextureCube( texture, slot ) {
		if ( texture && texture.isWebGLCubeRenderTarget ) {
			if ( warnedTextureCube === false ) {
				console.warn( "THREE.WebGLTextures.safeSetTextureCube: don't use cube render targets as textures. Use their .texture property instead." );
				warnedTextureCube = true;
			}
			texture = texture.texture;
		}
		if ( ( texture && texture.isCubeTexture ) ||
			( Array.isArray( texture.image ) && texture.image.length === 6 ) ) {
			setTextureCube( texture, slot );
		} else {
			setTextureCubeDynamic( texture, slot );
		}
	}
	this.allocateTextureUnit = allocateTextureUnit;
	this.resetTextureUnits = resetTextureUnits;
	this.setTexture2D = setTexture2D;
	this.setTexture2DArray = setTexture2DArray;
	this.setTexture3D = setTexture3D;
	this.setTextureCube = setTextureCube;
	this.setTextureCubeDynamic = setTextureCubeDynamic;
	this.setupRenderTarget = setupRenderTarget;
	this.updateRenderTargetMipmap = updateRenderTargetMipmap;
	this.updateMultisampleRenderTarget = updateMultisampleRenderTarget;
	this.safeSetTexture2D = safeSetTexture2D;
	this.safeSetTextureCube = safeSetTextureCube;
}
function WebGLUtils( gl, extensions, capabilities ) {
	const isWebGL2 = capabilities.isWebGL2;
	function convert( p ) {
		let extension;
		if ( p === UnsignedByteType ) return 5121;
		if ( p === UnsignedShort4444Type ) return 32819;
		if ( p === UnsignedShort5551Type ) return 32820;
		if ( p === UnsignedShort565Type ) return 33635;
		if ( p === ByteType ) return 5120;
		if ( p === ShortType ) return 5122;
		if ( p === UnsignedShortType ) return 5123;
		if ( p === IntType ) return 5124;
		if ( p === UnsignedIntType ) return 5125;
		if ( p === FloatType ) return 5126;
		if ( p === HalfFloatType ) {
			if ( isWebGL2 ) return 5131;
			extension = extensions.get( 'OES_texture_half_float' );
			if ( extension !== null ) {
				return extension.HALF_FLOAT_OES;
			} else {
				return null;
			}
		}
		if ( p === AlphaFormat ) return 6406;
		if ( p === RGBFormat ) return 6407;
		if ( p === RGBAFormat ) return 6408;
		if ( p === LuminanceFormat ) return 6409;
		if ( p === LuminanceAlphaFormat ) return 6410;
		if ( p === DepthFormat ) return 6402;
		if ( p === DepthStencilFormat ) return 34041;
		if ( p === RedFormat ) return 6403;
		if ( p === RedIntegerFormat ) return 36244;
		if ( p === RGFormat ) return 33319;
		if ( p === RGIntegerFormat ) return 33320;
		if ( p === RGBIntegerFormat ) return 36248;
		if ( p === RGBAIntegerFormat ) return 36249;
		if ( p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format ||
			p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format ) {
			extension = extensions.get( 'WEBGL_compressed_texture_s3tc' );
			if ( extension !== null ) {
				if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
				if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
				if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
				if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;
			} else {
				return null;
			}
		}
		if ( p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format ||
			p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format ) {
			extension = extensions.get( 'WEBGL_compressed_texture_pvrtc' );
			if ( extension !== null ) {
				if ( p === RGB_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
				if ( p === RGB_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
				if ( p === RGBA_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
				if ( p === RGBA_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
			} else {
				return null;
			}
		}
		if ( p === RGB_ETC1_Format ) {
			extension = extensions.get( 'WEBGL_compressed_texture_etc1' );
			if ( extension !== null ) {
				return extension.COMPRESSED_RGB_ETC1_WEBGL;
			} else {
				return null;
			}
		}
		if ( p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format ) {
			extension = extensions.get( 'WEBGL_compressed_texture_etc' );
			if ( extension !== null ) {
				if ( p === RGB_ETC2_Format ) return extension.COMPRESSED_RGB8_ETC2;
				if ( p === RGBA_ETC2_EAC_Format ) return extension.COMPRESSED_RGBA8_ETC2_EAC;
			}
		}
		if ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||
			p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||
			p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||
			p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||
			p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ||
			p === SRGB8_ALPHA8_ASTC_4x4_Format || p === SRGB8_ALPHA8_ASTC_5x4_Format || p === SRGB8_ALPHA8_ASTC_5x5_Format ||
			p === SRGB8_ALPHA8_ASTC_6x5_Format || p === SRGB8_ALPHA8_ASTC_6x6_Format || p === SRGB8_ALPHA8_ASTC_8x5_Format ||
			p === SRGB8_ALPHA8_ASTC_8x6_Format || p === SRGB8_ALPHA8_ASTC_8x8_Format || p === SRGB8_ALPHA8_ASTC_10x5_Format ||
			p === SRGB8_ALPHA8_ASTC_10x6_Format || p === SRGB8_ALPHA8_ASTC_10x8_Format || p === SRGB8_ALPHA8_ASTC_10x10_Format ||
			p === SRGB8_ALPHA8_ASTC_12x10_Format || p === SRGB8_ALPHA8_ASTC_12x12_Format ) {
			extension = extensions.get( 'WEBGL_compressed_texture_astc' );
			if ( extension !== null ) {
				return p;
			} else {
				return null;
			}
		}
		if ( p === RGBA_BPTC_Format ) {
			extension = extensions.get( 'EXT_texture_compression_bptc' );
			if ( extension !== null ) {
				return p;
			} else {
				return null;
			}
		}
		if ( p === UnsignedInt248Type ) {
			if ( isWebGL2 ) return 34042;
			extension = extensions.get( 'WEBGL_depth_texture' );
			if ( extension !== null ) {
				return extension.UNSIGNED_INT_24_8_WEBGL;
			} else {
				return null;
			}
		}
	}
	return { convert: convert };
}
function ArrayCamera( array ) {
	PerspectiveCamera.call( this );
	this.cameras = array || [];
}
ArrayCamera.prototype = Object.assign( Object.create( PerspectiveCamera.prototype ), {
	constructor: ArrayCamera,
	isArrayCamera: true
} );
function Group() {
	Object3D.call( this );
	this.type = 'Group';
}
Group.prototype = Object.assign( Object.create( Object3D.prototype ), {
	constructor: Group,
	isGroup: true
} );
function WebXRController() {
	this._targetRay = null;
	this._grip = null;
	this._hand = null;
}
Object.assign( WebXRController.prototype, {
	constructor: WebXRController,
	getHandSpace: function () {
		if ( this._hand === null ) {
			this._hand = new Group();
			this._hand.matrixAutoUpdate = false;
			this._hand.visible = false;
			this._hand.joints = [];
			this._hand.inputState = { pinching: false };
			if ( window.XRHand ) {
				for ( let i = 0; i <= window.XRHand.LITTLE_PHALANX_TIP; i ++ ) {
					const joint = new Group();
					joint.matrixAutoUpdate = false;
					joint.visible = false;
					this._hand.joints.push( joint );
					this._hand.add( joint );
				}
			}
		}
		return this._hand;
	},
	getTargetRaySpace: function () {
		if ( this._targetRay === null ) {
			this._targetRay = new Group();
			this._targetRay.matrixAutoUpdate = false;
			this._targetRay.visible = false;
		}
		return this._targetRay;
	},
	getGripSpace: function () {
		if ( this._grip === null ) {
			this._grip = new Group();
			this._grip.matrixAutoUpdate = false;
			this._grip.visible = false;
		}
		return this._grip;
	},
	dispatchEvent: function ( event ) {
		if ( this._targetRay !== null ) {
			this._targetRay.dispatchEvent( event );
		}
		if ( this._grip !== null ) {
			this._grip.dispatchEvent( event );
		}
		if ( this._hand !== null ) {
			this._hand.dispatchEvent( event );
		}
		return this;
	},
	disconnect: function ( inputSource ) {
		this.dispatchEvent( { type: 'disconnected', data: inputSource } );
		if ( this._targetRay !== null ) {
			this._targetRay.visible = false;
		}
		if ( this._grip !== null ) {
			this._grip.visible = false;
		}
		if ( this._hand !== null ) {
			this._hand.visible = false;
		}
		return this;
	},
	update: function ( inputSource, frame, referenceSpace ) {
		let inputPose = null;
		let gripPose = null;
		let handPose = null;
		const targetRay = this._targetRay;
		const grip = this._grip;
		const hand = this._hand;
		if ( inputSource ) {
			if ( hand && inputSource.hand ) {
				handPose = true;
				for ( let i = 0; i <= window.XRHand.LITTLE_PHALANX_TIP; i ++ ) {
					if ( inputSource.hand[ i ] ) {
						const jointPose = frame.getJointPose( inputSource.hand[ i ], referenceSpace );
						const joint = hand.joints[ i ];
						if ( jointPose !== null ) {
							joint.matrix.fromArray( jointPose.transform.matrix );
							joint.matrix.decompose( joint.position, joint.rotation, joint.scale );
							joint.jointRadius = jointPose.radius;
						}
						joint.visible = jointPose !== null;
						const indexTip = hand.joints[ window.XRHand.INDEX_PHALANX_TIP ];
						const thumbTip = hand.joints[ window.XRHand.THUMB_PHALANX_TIP ];
						const distance = indexTip.position.distanceTo( thumbTip.position );
						const distanceToPinch = 0.02;
						const threshold = 0.005;
						if ( hand.inputState.pinching && distance > distanceToPinch + threshold ) {
							hand.inputState.pinching = false;
							this.dispatchEvent( {
								type: "pinchend",
								handedness: inputSource.handedness,
								target: this
							} );
						} else if ( ! hand.inputState.pinching && distance <= distanceToPinch - threshold ) {
							hand.inputState.pinching = true;
							this.dispatchEvent( {
								type: "pinchstart",
								handedness: inputSource.handedness,
								target: this
							} );
						}
					}
				}
			} else {
				if ( targetRay !== null ) {
					inputPose = frame.getPose( inputSource.targetRaySpace, referenceSpace );
					if ( inputPose !== null ) {
						targetRay.matrix.fromArray( inputPose.transform.matrix );
						targetRay.matrix.decompose( targetRay.position, targetRay.rotation, targetRay.scale );
					}
				}
				if ( grip !== null && inputSource.gripSpace ) {
					gripPose = frame.getPose( inputSource.gripSpace, referenceSpace );
					if ( gripPose !== null ) {
						grip.matrix.fromArray( gripPose.transform.matrix );
						grip.matrix.decompose( grip.position, grip.rotation, grip.scale );
					}
				}
			}
		}
		if ( targetRay !== null ) {
			targetRay.visible = ( inputPose !== null );
		}
		if ( grip !== null ) {
			grip.visible = ( gripPose !== null );
		}
		if ( hand !== null ) {
			hand.visible = ( handPose !== null );
		}
		return this;
	}
} );
function WebXRManager( renderer, gl ) {
	const scope = this;
	let session = null;
	let framebufferScaleFactor = 1.0;
	let referenceSpace = null;
	let referenceSpaceType = 'local-floor';
	let pose = null;
	const controllers = [];
	const inputSourcesMap = new Map();
	const cameraL = new PerspectiveCamera();
	cameraL.layers.enable( 1 );
	cameraL.viewport = new Vector4();
	const cameraR = new PerspectiveCamera();
	cameraR.layers.enable( 2 );
	cameraR.viewport = new Vector4();
	const cameras = [ cameraL, cameraR ];
	const cameraVR = new ArrayCamera();
	cameraVR.layers.enable( 1 );
	cameraVR.layers.enable( 2 );
	let _currentDepthNear = null;
	let _currentDepthFar = null;
	this.enabled = false;
	this.isPresenting = false;
	this.getController = function ( index ) {
		let controller = controllers[ index ];
		if ( controller === undefined ) {
			controller = new WebXRController();
			controllers[ index ] = controller;
		}
		return controller.getTargetRaySpace();
	};
	this.getControllerGrip = function ( index ) {
		let controller = controllers[ index ];
		if ( controller === undefined ) {
			controller = new WebXRController();
			controllers[ index ] = controller;
		}
		return controller.getGripSpace();
	};
	this.getHand = function ( index ) {
		let controller = controllers[ index ];
		if ( controller === undefined ) {
			controller = new WebXRController();
			controllers[ index ] = controller;
		}
		return controller.getHandSpace();
	};
	function onSessionEvent( event ) {
		const controller = inputSourcesMap.get( event.inputSource );
		if ( controller ) {
			controller.dispatchEvent( { type: event.type } );
		}
	}
	function onSessionEnd() {
		inputSourcesMap.forEach( function ( controller, inputSource ) {
			controller.disconnect( inputSource );
		} );
		inputSourcesMap.clear();
		renderer.setFramebuffer( null );
		renderer.setRenderTarget( renderer.getRenderTarget() );
		animation.stop();
		scope.isPresenting = false;
		scope.dispatchEvent( { type: 'sessionend' } );
	}
	function onRequestReferenceSpace( value ) {
		referenceSpace = value;
		animation.setContext( session );
		animation.start();
		scope.isPresenting = true;
		scope.dispatchEvent( { type: 'sessionstart' } );
	}
	this.setFramebufferScaleFactor = function ( value ) {
		framebufferScaleFactor = value;
		if ( scope.isPresenting === true ) {
			console.warn( 'THREE.WebXRManager: Cannot change framebuffer scale while presenting.' );
		}
	};
	this.setReferenceSpaceType = function ( value ) {
		referenceSpaceType = value;
		if ( scope.isPresenting === true ) {
			console.warn( 'THREE.WebXRManager: Cannot change reference space type while presenting.' );
		}
	};
	this.getReferenceSpace = function () {
		return referenceSpace;
	};
	this.getSession = function () {
		return session;
	};
	this.setSession = function ( value ) {
		session = value;
		if ( session !== null ) {
			session.addEventListener( 'select', onSessionEvent );
			session.addEventListener( 'selectstart', onSessionEvent );
			session.addEventListener( 'selectend', onSessionEvent );
			session.addEventListener( 'squeeze', onSessionEvent );
			session.addEventListener( 'squeezestart', onSessionEvent );
			session.addEventListener( 'squeezeend', onSessionEvent );
			session.addEventListener( 'end', onSessionEnd );
			const attributes = gl.getContextAttributes();
			if ( attributes.xrCompatible !== true ) {
				gl.makeXRCompatible();
			}
			const layerInit = {
				antialias: attributes.antialias,
				alpha: attributes.alpha,
				depth: attributes.depth,
				stencil: attributes.stencil,
				framebufferScaleFactor: framebufferScaleFactor
			};
			const baseLayer = new XRWebGLLayer( session, gl, layerInit );
			session.updateRenderState( { baseLayer: baseLayer } );
			session.requestReferenceSpace( referenceSpaceType ).then( onRequestReferenceSpace );
			session.addEventListener( 'inputsourceschange', updateInputSources );
		}
	};
	function updateInputSources( event ) {
		const inputSources = session.inputSources;
		for ( let i = 0; i < controllers.length; i ++ ) {
			inputSourcesMap.set( inputSources[ i ], controllers[ i ] );
		}
		for ( let i = 0; i < event.removed.length; i ++ ) {
			const inputSource = event.removed[ i ];
			const controller = inputSourcesMap.get( inputSource );
			if ( controller ) {
				controller.dispatchEvent( { type: 'disconnected', data: inputSource } );
				inputSourcesMap.delete( inputSource );
			}
		}
		for ( let i = 0; i < event.added.length; i ++ ) {
			const inputSource = event.added[ i ];
			const controller = inputSourcesMap.get( inputSource );
			if ( controller ) {
				controller.dispatchEvent( { type: 'connected', data: inputSource } );
			}
		}
	}
	const cameraLPos = new Vector3();
	const cameraRPos = new Vector3();
	function setProjectionFromUnion( camera, cameraL, cameraR ) {
		cameraLPos.setFromMatrixPosition( cameraL.matrixWorld );
		cameraRPos.setFromMatrixPosition( cameraR.matrixWorld );
		const ipd = cameraLPos.distanceTo( cameraRPos );
		const projL = cameraL.projectionMatrix.elements;
		const projR = cameraR.projectionMatrix.elements;
		const near = projL[ 14 ] / ( projL[ 10 ] - 1 );
		const far = projL[ 14 ] / ( projL[ 10 ] + 1 );
		const topFov = ( projL[ 9 ] + 1 ) / projL[ 5 ];
		const bottomFov = ( projL[ 9 ] - 1 ) / projL[ 5 ];
		const leftFov = ( projL[ 8 ] - 1 ) / projL[ 0 ];
		const rightFov = ( projR[ 8 ] + 1 ) / projR[ 0 ];
		const left = near * leftFov;
		const right = near * rightFov;
		const zOffset = ipd / ( - leftFov + rightFov );
		const xOffset = zOffset * - leftFov;
		cameraL.matrixWorld.decompose( camera.position, camera.quaternion, camera.scale );
		camera.translateX( xOffset );
		camera.translateZ( zOffset );
		camera.matrixWorld.compose( camera.position, camera.quaternion, camera.scale );
		camera.matrixWorldInverse.getInverse( camera.matrixWorld );
		const near2 = near + zOffset;
		const far2 = far + zOffset;
		const left2 = left - xOffset;
		const right2 = right + ( ipd - xOffset );
		const top2 = topFov * far / far2 * near2;
		const bottom2 = bottomFov * far / far2 * near2;
		camera.projectionMatrix.makePerspective( left2, right2, top2, bottom2, near2, far2 );
	}
	function updateCamera( camera, parent ) {
		if ( parent === null ) {
			camera.matrixWorld.copy( camera.matrix );
		} else {
			camera.matrixWorld.multiplyMatrices( parent.matrixWorld, camera.matrix );
		}
		camera.matrixWorldInverse.getInverse( camera.matrixWorld );
	}
	this.getCamera = function ( camera ) {
		cameraVR.near = cameraR.near = cameraL.near = camera.near;
		cameraVR.far = cameraR.far = cameraL.far = camera.far;
		if ( _currentDepthNear !== cameraVR.near || _currentDepthFar !== cameraVR.far ) {
			session.updateRenderState( {
				depthNear: cameraVR.near,
				depthFar: cameraVR.far
			} );
			_currentDepthNear = cameraVR.near;
			_currentDepthFar = cameraVR.far;
		}
		const parent = camera.parent;
		const cameras = cameraVR.cameras;
		updateCamera( cameraVR, parent );
		for ( let i = 0; i < cameras.length; i ++ ) {
			updateCamera( cameras[ i ], parent );
		}
		camera.matrixWorld.copy( cameraVR.matrixWorld );
		const children = camera.children;
		for ( let i = 0, l = children.length; i < l; i ++ ) {
			children[ i ].updateMatrixWorld( true );
		}
		if ( cameras.length === 2 ) {
			setProjectionFromUnion( cameraVR, cameraL, cameraR );
		} else {
			cameraVR.projectionMatrix.copy( cameraL.projectionMatrix );
		}
		return cameraVR;
	};
	let onAnimationFrameCallback = null;
	function onAnimationFrame( time, frame ) {
		pose = frame.getViewerPose( referenceSpace );
		if ( pose !== null ) {
			const views = pose.views;
			const baseLayer = session.renderState.baseLayer;
			renderer.setFramebuffer( baseLayer.framebuffer );
			let cameraVRNeedsUpdate = false;
			if ( views.length !== cameraVR.cameras.length ) {
				cameraVR.cameras.length = 0;
				cameraVRNeedsUpdate = true;
			}
			for ( let i = 0; i < views.length; i ++ ) {
				const view = views[ i ];
				const viewport = baseLayer.getViewport( view );
				const camera = cameras[ i ];
				camera.matrix.fromArray( view.transform.matrix );
				camera.projectionMatrix.fromArray( view.projectionMatrix );
				camera.viewport.set( viewport.x, viewport.y, viewport.width, viewport.height );
				if ( i === 0 ) {
					cameraVR.matrix.copy( camera.matrix );
				}
				if ( cameraVRNeedsUpdate === true ) {
					cameraVR.cameras.push( camera );
				}
			}
		}
		const inputSources = session.inputSources;
		for ( let i = 0; i < controllers.length; i ++ ) {
			const controller = controllers[ i ];
			const inputSource = inputSources[ i ];
			controller.update( inputSource, frame, referenceSpace );
		}
		if ( onAnimationFrameCallback ) onAnimationFrameCallback( time, frame );
	}
	const animation = new WebGLAnimation();
	animation.setAnimationLoop( onAnimationFrame );
	this.setAnimationLoop = function ( callback ) {
		onAnimationFrameCallback = callback;
	};
	this.dispose = function () {};
}
Object.assign( WebXRManager.prototype, EventDispatcher.prototype );
function WebGLMaterials( properties ) {
	function refreshFogUniforms( uniforms, fog ) {
		uniforms.fogColor.value.copy( fog.color );
		if ( fog.isFog ) {
			uniforms.fogNear.value = fog.near;
			uniforms.fogFar.value = fog.far;
		} else if ( fog.isFogExp2 ) {
			uniforms.fogDensity.value = fog.density;
		}
	}
	function refreshMaterialUniforms( uniforms, material, pixelRatio, height ) {
		if ( material.isMeshBasicMaterial ) {
			refreshUniformsCommon( uniforms, material );
		} else if ( material.isMeshLambertMaterial ) {
			refreshUniformsCommon( uniforms, material );
			refreshUniformsLambert( uniforms, material );
		} else if ( material.isMeshToonMaterial ) {
			refreshUniformsCommon( uniforms, material );
			refreshUniformsToon( uniforms, material );
		} else if ( material.isMeshPhongMaterial ) {
			refreshUniformsCommon( uniforms, material );
			refreshUniformsPhong( uniforms, material );
		} else if ( material.isMeshStandardMaterial ) {
			refreshUniformsCommon( uniforms, material );
			if ( material.isMeshPhysicalMaterial ) {
				refreshUniformsPhysical( uniforms, material );
			} else {
				refreshUniformsStandard( uniforms, material );
			}
		} else if ( material.isMeshMatcapMaterial ) {
			refreshUniformsCommon( uniforms, material );
			refreshUniformsMatcap( uniforms, material );
		} else if ( material.isMeshDepthMaterial ) {
			refreshUniformsCommon( uniforms, material );
			refreshUniformsDepth( uniforms, material );
		} else if ( material.isMeshDistanceMaterial ) {
			refreshUniformsCommon( uniforms, material );
			refreshUniformsDistance( uniforms, material );
		} else if ( material.isMeshNormalMaterial ) {
			refreshUniformsCommon( uniforms, material );
			refreshUniformsNormal( uniforms, material );
		} else if ( material.isLineBasicMaterial ) {
			refreshUniformsLine( uniforms, material );
			if ( material.isLineDashedMaterial ) {
				refreshUniformsDash( uniforms, material );
			}
		} else if ( material.isPointsMaterial ) {
			refreshUniformsPoints( uniforms, material, pixelRatio, height );
		} else if ( material.isSpriteMaterial ) {
			refreshUniformsSprites( uniforms, material );
		} else if ( material.isShadowMaterial ) {
			uniforms.color.value.copy( material.color );
			uniforms.opacity.value = material.opacity;
		} else if ( material.isShaderMaterial ) {
			material.uniformsNeedUpdate = false;
		}
	}
	function refreshUniformsCommon( uniforms, material ) {
		uniforms.opacity.value = material.opacity;
		if ( material.color ) {
			uniforms.diffuse.value.copy( material.color );
		}
		if ( material.emissive ) {
			uniforms.emissive.value.copy( material.emissive ).multiplyScalar( material.emissiveIntensity );
		}
		if ( material.map ) {
			uniforms.map.value = material.map;
		}
		if ( material.alphaMap ) {
			uniforms.alphaMap.value = material.alphaMap;
		}
		if ( material.specularMap ) {
			uniforms.specularMap.value = material.specularMap;
		}
		const envMap = properties.get( material ).envMap;
		if ( envMap ) {
			uniforms.envMap.value = envMap;
			uniforms.flipEnvMap.value = envMap.isCubeTexture ? - 1 : 1;
			uniforms.reflectivity.value = material.reflectivity;
			uniforms.refractionRatio.value = material.refractionRatio;
			const maxMipLevel = properties.get( envMap ).__maxMipLevel;
			if ( maxMipLevel !== undefined ) {
				uniforms.maxMipLevel.value = maxMipLevel;
			}
		}
		if ( material.lightMap ) {
			uniforms.lightMap.value = material.lightMap;
			uniforms.lightMapIntensity.value = material.lightMapIntensity;
		}
		if ( material.aoMap ) {
			uniforms.aoMap.value = material.aoMap;
			uniforms.aoMapIntensity.value = material.aoMapIntensity;
		}
		let uvScaleMap;
		if ( material.map ) {
			uvScaleMap = material.map;
		} else if ( material.specularMap ) {
			uvScaleMap = material.specularMap;
		} else if ( material.displacementMap ) {
			uvScaleMap = material.displacementMap;
		} else if ( material.normalMap ) {
			uvScaleMap = material.normalMap;
		} else if ( material.bumpMap ) {
			uvScaleMap = material.bumpMap;
		} else if ( material.roughnessMap ) {
			uvScaleMap = material.roughnessMap;
		} else if ( material.metalnessMap ) {
			uvScaleMap = material.metalnessMap;
		} else if ( material.alphaMap ) {
			uvScaleMap = material.alphaMap;
		} else if ( material.emissiveMap ) {
			uvScaleMap = material.emissiveMap;
		} else if ( material.clearcoatMap ) {
			uvScaleMap = material.clearcoatMap;
		} else if ( material.clearcoatNormalMap ) {
			uvScaleMap = material.clearcoatNormalMap;
		} else if ( material.clearcoatRoughnessMap ) {
			uvScaleMap = material.clearcoatRoughnessMap;
		}
		if ( uvScaleMap !== undefined ) {
			if ( uvScaleMap.isWebGLRenderTarget ) {
				uvScaleMap = uvScaleMap.texture;
			}
			if ( uvScaleMap.matrixAutoUpdate === true ) {
				uvScaleMap.updateMatrix();
			}
			uniforms.uvTransform.value.copy( uvScaleMap.matrix );
		}
		let uv2ScaleMap;
		if ( material.aoMap ) {
			uv2ScaleMap = material.aoMap;
		} else if ( material.lightMap ) {
			uv2ScaleMap = material.lightMap;
		}
		if ( uv2ScaleMap !== undefined ) {
			if ( uv2ScaleMap.isWebGLRenderTarget ) {
				uv2ScaleMap = uv2ScaleMap.texture;
			}
			if ( uv2ScaleMap.matrixAutoUpdate === true ) {
				uv2ScaleMap.updateMatrix();
			}
			uniforms.uv2Transform.value.copy( uv2ScaleMap.matrix );
		}
	}
	function refreshUniformsLine( uniforms, material ) {
		uniforms.diffuse.value.copy( material.color );
		uniforms.opacity.value = material.opacity;
	}
	function refreshUniformsDash( uniforms, material ) {
		uniforms.dashSize.value = material.dashSize;
		uniforms.totalSize.value = material.dashSize + material.gapSize;
		uniforms.scale.value = material.scale;
	}
	function refreshUniformsPoints( uniforms, material, pixelRatio, height ) {
		uniforms.diffuse.value.copy( material.color );
		uniforms.opacity.value = material.opacity;
		uniforms.size.value = material.size * pixelRatio;
		uniforms.scale.value = height * 0.5;
		if ( material.map ) {
			uniforms.map.value = material.map;
		}
		if ( material.alphaMap ) {
			uniforms.alphaMap.value = material.alphaMap;
		}
		let uvScaleMap;
		if ( material.map ) {
			uvScaleMap = material.map;
		} else if ( material.alphaMap ) {
			uvScaleMap = material.alphaMap;
		}
		if ( uvScaleMap !== undefined ) {
			if ( uvScaleMap.matrixAutoUpdate === true ) {
				uvScaleMap.updateMatrix();
			}
			uniforms.uvTransform.value.copy( uvScaleMap.matrix );
		}
	}
	function refreshUniformsSprites( uniforms, material ) {
		uniforms.diffuse.value.copy( material.color );
		uniforms.opacity.value = material.opacity;
		uniforms.rotation.value = material.rotation;
		if ( material.map ) {
			uniforms.map.value = material.map;
		}
		if ( material.alphaMap ) {
			uniforms.alphaMap.value = material.alphaMap;
		}
		let uvScaleMap;
		if ( material.map ) {
			uvScaleMap = material.map;
		} else if ( material.alphaMap ) {
			uvScaleMap = material.alphaMap;
		}
		if ( uvScaleMap !== undefined ) {
			if ( uvScaleMap.matrixAutoUpdate === true ) {
				uvScaleMap.updateMatrix();
			}
			uniforms.uvTransform.value.copy( uvScaleMap.matrix );
		}
	}
	function refreshUniformsLambert( uniforms, material ) {
		if ( material.emissiveMap ) {
			uniforms.emissiveMap.value = material.emissiveMap;
		}
	}
	function refreshUniformsPhong( uniforms, material ) {
		uniforms.specular.value.copy( material.specular );
		uniforms.shininess.value = Math.max( material.shininess, 1e-4 );
		if ( material.emissiveMap ) {
			uniforms.emissiveMap.value = material.emissiveMap;
		}
		if ( material.bumpMap ) {
			uniforms.bumpMap.value = material.bumpMap;
			uniforms.bumpScale.value = material.bumpScale;
			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;
		}
		if ( material.normalMap ) {
			uniforms.normalMap.value = material.normalMap;
			uniforms.normalScale.value.copy( material.normalScale );
			if ( material.side === BackSide ) uniforms.normalScale.value.negate();
		}
		if ( material.displacementMap ) {
			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;
		}
	}
	function refreshUniformsToon( uniforms, material ) {
		if ( material.gradientMap ) {
			uniforms.gradientMap.value = material.gradientMap;
		}
		if ( material.emissiveMap ) {
			uniforms.emissiveMap.value = material.emissiveMap;
		}
		if ( material.bumpMap ) {
			uniforms.bumpMap.value = material.bumpMap;
			uniforms.bumpScale.value = material.bumpScale;
			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;
		}
		if ( material.normalMap ) {
			uniforms.normalMap.value = material.normalMap;
			uniforms.normalScale.value.copy( material.normalScale );
			if ( material.side === BackSide ) uniforms.normalScale.value.negate();
		}
		if ( material.displacementMap ) {
			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;
		}
	}
	function refreshUniformsStandard( uniforms, material ) {
		uniforms.roughness.value = material.roughness;
		uniforms.metalness.value = material.metalness;
		if ( material.roughnessMap ) {
			uniforms.roughnessMap.value = material.roughnessMap;
		}
		if ( material.metalnessMap ) {
			uniforms.metalnessMap.value = material.metalnessMap;
		}
		if ( material.emissiveMap ) {
			uniforms.emissiveMap.value = material.emissiveMap;
		}
		if ( material.bumpMap ) {
			uniforms.bumpMap.value = material.bumpMap;
			uniforms.bumpScale.value = material.bumpScale;
			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;
		}
		if ( material.normalMap ) {
			uniforms.normalMap.value = material.normalMap;
			uniforms.normalScale.value.copy( material.normalScale );
			if ( material.side === BackSide ) uniforms.normalScale.value.negate();
		}
		if ( material.displacementMap ) {
			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;
		}
		const envMap = properties.get( material ).envMap;
		if ( envMap ) {
			uniforms.envMapIntensity.value = material.envMapIntensity;
		}
	}
	function refreshUniformsPhysical( uniforms, material ) {
		refreshUniformsStandard( uniforms, material );
		uniforms.reflectivity.value = material.reflectivity;
		uniforms.clearcoat.value = material.clearcoat;
		uniforms.clearcoatRoughness.value = material.clearcoatRoughness;
		if ( material.sheen ) uniforms.sheen.value.copy( material.sheen );
		if ( material.clearcoatMap ) {
			uniforms.clearcoatMap.value = material.clearcoatMap;
		}
		if ( material.clearcoatRoughnessMap ) {
			uniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;
		}
		if ( material.clearcoatNormalMap ) {
			uniforms.clearcoatNormalScale.value.copy( material.clearcoatNormalScale );
			uniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;
			if ( material.side === BackSide ) {
				uniforms.clearcoatNormalScale.value.negate();
			}
		}
		uniforms.transmission.value = material.transmission;
		if ( material.transmissionMap ) {
			uniforms.transmissionMap.value = material.transmissionMap;
		}
	}
	function refreshUniformsMatcap( uniforms, material ) {
		if ( material.matcap ) {
			uniforms.matcap.value = material.matcap;
		}
		if ( material.bumpMap ) {
			uniforms.bumpMap.value = material.bumpMap;
			uniforms.bumpScale.value = material.bumpScale;
			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;
		}
		if ( material.normalMap ) {
			uniforms.normalMap.value = material.normalMap;
			uniforms.normalScale.value.copy( material.normalScale );
			if ( material.side === BackSide ) uniforms.normalScale.value.negate();
		}
		if ( material.displacementMap ) {
			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;
		}
	}
	function refreshUniformsDepth( uniforms, material ) {
		if ( material.displacementMap ) {
			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;
		}
	}
	function refreshUniformsDistance( uniforms, material ) {
		if ( material.displacementMap ) {
			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;
		}
		uniforms.referencePosition.value.copy( material.referencePosition );
		uniforms.nearDistance.value = material.nearDistance;
		uniforms.farDistance.value = material.farDistance;
	}
	function refreshUniformsNormal( uniforms, material ) {
		if ( material.bumpMap ) {
			uniforms.bumpMap.value = material.bumpMap;
			uniforms.bumpScale.value = material.bumpScale;
			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;
		}
		if ( material.normalMap ) {
			uniforms.normalMap.value = material.normalMap;
			uniforms.normalScale.value.copy( material.normalScale );
			if ( material.side === BackSide ) uniforms.normalScale.value.negate();
		}
		if ( material.displacementMap ) {
			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;
		}
	}
	return {
		refreshFogUniforms: refreshFogUniforms,
		refreshMaterialUniforms: refreshMaterialUniforms
	};
}
function WebGLRenderer( parameters ) {
	parameters = parameters || {};
	const _canvas = parameters.canvas !== undefined ? parameters.canvas : document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' ),
		_context = parameters.context !== undefined ? parameters.context : null,
		_alpha = parameters.alpha !== undefined ? parameters.alpha : false,
		_depth = parameters.depth !== undefined ? parameters.depth : true,
		_stencil = parameters.stencil !== undefined ? parameters.stencil : true,
		_antialias = parameters.antialias !== undefined ? parameters.antialias : false,
		_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,
		_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,
		_powerPreference = parameters.powerPreference !== undefined ? parameters.powerPreference : 'default',
		_failIfMajorPerformanceCaveat = parameters.failIfMajorPerformanceCaveat !== undefined ? parameters.failIfMajorPerformanceCaveat : false;
	let currentRenderList = null;
	let currentRenderState = null;
	this.domElement = _canvas;
	this.debug = {
		checkShaderErrors: true
	};
	this.autoClear = true;
	this.autoClearColor = true;
	this.autoClearDepth = true;
	this.autoClearStencil = true;
	this.sortObjects = true;
	this.clippingPlanes = [];
	this.localClippingEnabled = false;
	this.gammaFactor = 2.0;
	this.outputEncoding = LinearEncoding;
	this.physicallyCorrectLights = false;
	this.toneMapping = NoToneMapping;
	this.toneMappingExposure = 1.0;
	this.maxMorphTargets = 8;
	this.maxMorphNormals = 4;
	const _this = this;
	let _isContextLost = false;
	let _framebuffer = null;
	let _currentActiveCubeFace = 0;
	let _currentActiveMipmapLevel = 0;
	let _currentRenderTarget = null;
	let _currentFramebuffer = null;
	let _currentMaterialId = - 1;
	let _currentCamera = null;
	let _currentArrayCamera = null;
	const _currentViewport = new Vector4();
	const _currentScissor = new Vector4();
	let _currentScissorTest = null;
	let _width = _canvas.width;
	let _height = _canvas.height;
	let _pixelRatio = 1;
	let _opaqueSort = null;
	let _transparentSort = null;
	const _viewport = new Vector4( 0, 0, _width, _height );
	const _scissor = new Vector4( 0, 0, _width, _height );
	let _scissorTest = false;
	const _frustum = new Frustum();
	let _clippingEnabled = false;
	let _localClippingEnabled = false;
	const _projScreenMatrix = new Matrix4();
	const _vector3 = new Vector3();
	const _emptyScene = { background: null, fog: null, environment: null, overrideMaterial: null, isScene: true };
	function getTargetPixelRatio() {
		return _currentRenderTarget === null ? _pixelRatio : 1;
	}
	let _gl = _context;
	function getContext( contextNames, contextAttributes ) {
		for ( let i = 0; i < contextNames.length; i ++ ) {
			const contextName = contextNames[ i ];
			const context = _canvas.getContext( contextName, contextAttributes );
			if ( context !== null ) return context;
		}
		return null;
	}
	try {
		const contextAttributes = {
			alpha: _alpha,
			depth: _depth,
			stencil: _stencil,
			antialias: _antialias,
			premultipliedAlpha: _premultipliedAlpha,
			preserveDrawingBuffer: _preserveDrawingBuffer,
			powerPreference: _powerPreference,
			failIfMajorPerformanceCaveat: _failIfMajorPerformanceCaveat
		};
		_canvas.addEventListener( 'webglcontextlost', onContextLost, false );
		_canvas.addEventListener( 'webglcontextrestored', onContextRestore, false );
		if ( _gl === null ) {
			const contextNames = [ 'webgl2', 'webgl', 'experimental-webgl' ];
			if ( _this.isWebGL1Renderer === true ) {
				contextNames.shift();
			}
			_gl = getContext( contextNames, contextAttributes );
			if ( _gl === null ) {
				if ( getContext( contextNames ) ) {
					throw new Error( 'Error creating WebGL context with your selected attributes.' );
				} else {
					throw new Error( 'Error creating WebGL context.' );
				}
			}
		}
		if ( _gl.getShaderPrecisionFormat === undefined ) {
			_gl.getShaderPrecisionFormat = function () {
				return { 'rangeMin': 1, 'rangeMax': 1, 'precision': 1 };
			};
		}
	} catch ( error ) {
		console.error( 'THREE.WebGLRenderer: ' + error.message );
		throw error;
	}
	let extensions, capabilities, state, info;
	let properties, textures, cubemaps, attributes, geometries, objects;
	let programCache, materials, renderLists, renderStates, clipping;
	let background, morphtargets, bufferRenderer, indexedBufferRenderer;
	let utils, bindingStates;
	function initGLContext() {
		extensions = new WebGLExtensions( _gl );
		capabilities = new WebGLCapabilities( _gl, extensions, parameters );
		if ( capabilities.isWebGL2 === false ) {
			extensions.get( 'WEBGL_depth_texture' );
			extensions.get( 'OES_texture_float' );
			extensions.get( 'OES_texture_half_float' );
			extensions.get( 'OES_texture_half_float_linear' );
			extensions.get( 'OES_standard_derivatives' );
			extensions.get( 'OES_element_index_uint' );
			extensions.get( 'OES_vertex_array_object' );
			extensions.get( 'ANGLE_instanced_arrays' );
		}
		extensions.get( 'OES_texture_float_linear' );
		utils = new WebGLUtils( _gl, extensions, capabilities );
		state = new WebGLState( _gl, extensions, capabilities );
		state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );
		state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );
		info = new WebGLInfo();
		properties = new WebGLProperties();
		textures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );
		cubemaps = new WebGLCubeMaps( _this );
		attributes = new WebGLAttributes( _gl, capabilities );
		bindingStates = new WebGLBindingStates( _gl, extensions, attributes, capabilities );
		geometries = new WebGLGeometries( _gl, attributes, info, bindingStates );
		objects = new WebGLObjects( _gl, geometries, attributes, info );
		morphtargets = new WebGLMorphtargets( _gl );
		clipping = new WebGLClipping( properties );
		programCache = new WebGLPrograms( _this, cubemaps, extensions, capabilities, bindingStates, clipping );
		materials = new WebGLMaterials( properties );
		renderLists = new WebGLRenderLists( properties );
		renderStates = new WebGLRenderStates();
		background = new WebGLBackground( _this, cubemaps, state, objects, _premultipliedAlpha );
		bufferRenderer = new WebGLBufferRenderer( _gl, extensions, info, capabilities );
		indexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info, capabilities );
		info.programs = programCache.programs;
		_this.capabilities = capabilities;
		_this.extensions = extensions;
		_this.properties = properties;
		_this.renderLists = renderLists;
		_this.state = state;
		_this.info = info;
	}
	initGLContext();
	const xr = new WebXRManager( _this, _gl );
	this.xr = xr;
	const shadowMap = new WebGLShadowMap( _this, objects, capabilities.maxTextureSize );
	this.shadowMap = shadowMap;
	this.getContext = function () {
		return _gl;
	};
	this.getContextAttributes = function () {
		return _gl.getContextAttributes();
	};
	this.forceContextLoss = function () {
		const extension = extensions.get( 'WEBGL_lose_context' );
		if ( extension ) extension.loseContext();
	};
	this.forceContextRestore = function () {
		const extension = extensions.get( 'WEBGL_lose_context' );
		if ( extension ) extension.restoreContext();
	};
	this.getPixelRatio = function () {
		return _pixelRatio;
	};
	this.setPixelRatio = function ( value ) {
		if ( value === undefined ) return;
		_pixelRatio = value;
		this.setSize( _width, _height, false );
	};
	this.getSize = function ( target ) {
		if ( target === undefined ) {
			console.warn( 'WebGLRenderer: .getsize() now requires a Vector2 as an argument' );
			target = new Vector2();
		}
		return target.set( _width, _height );
	};
	this.setSize = function ( width, height, updateStyle ) {
		if ( xr.isPresenting ) {
			console.warn( 'THREE.WebGLRenderer: Can\'t change size while VR device is presenting.' );
			return;
		}
		_width = width;
		_height = height;
		_canvas.width = Math.floor( width * _pixelRatio );
		_canvas.height = Math.floor( height * _pixelRatio );
		if ( updateStyle !== false ) {
			_canvas.style.width = width + 'px';
			_canvas.style.height = height + 'px';
		}
		this.setViewport( 0, 0, width, height );
	};
	this.getDrawingBufferSize = function ( target ) {
		if ( target === undefined ) {
			console.warn( 'WebGLRenderer: .getdrawingBufferSize() now requires a Vector2 as an argument' );
			target = new Vector2();
		}
		return target.set( _width * _pixelRatio, _height * _pixelRatio ).floor();
	};
	this.setDrawingBufferSize = function ( width, height, pixelRatio ) {
		_width = width;
		_height = height;
		_pixelRatio = pixelRatio;
		_canvas.width = Math.floor( width * pixelRatio );
		_canvas.height = Math.floor( height * pixelRatio );
		this.setViewport( 0, 0, width, height );
	};
	this.getCurrentViewport = function ( target ) {
		if ( target === undefined ) {
			console.warn( 'WebGLRenderer: .getCurrentViewport() now requires a Vector4 as an argument' );
			target = new Vector4();
		}
		return target.copy( _currentViewport );
	};
	this.getViewport = function ( target ) {
		return target.copy( _viewport );
	};
	this.setViewport = function ( x, y, width, height ) {
		if ( x.isVector4 ) {
			_viewport.set( x.x, x.y, x.z, x.w );
		} else {
			_viewport.set( x, y, width, height );
		}
		state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );
	};
	this.getScissor = function ( target ) {
		return target.copy( _scissor );
	};
	this.setScissor = function ( x, y, width, height ) {
		if ( x.isVector4 ) {
			_scissor.set( x.x, x.y, x.z, x.w );
		} else {
			_scissor.set( x, y, width, height );
		}
		state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );
	};
	this.getScissorTest = function () {
		return _scissorTest;
	};
	this.setScissorTest = function ( boolean ) {
		state.setScissorTest( _scissorTest = boolean );
	};
	this.setOpaqueSort = function ( method ) {
		_opaqueSort = method;
	};
	this.setTransparentSort = function ( method ) {
		_transparentSort = method;
	};
	this.getClearColor = function () {
		return background.getClearColor();
	};
	this.setClearColor = function () {
		background.setClearColor.apply( background, arguments );
	};
	this.getClearAlpha = function () {
		return background.getClearAlpha();
	};
	this.setClearAlpha = function () {
		background.setClearAlpha.apply( background, arguments );
	};
	this.clear = function ( color, depth, stencil ) {
		let bits = 0;
		if ( color === undefined || color ) bits |= 16384;
		if ( depth === undefined || depth ) bits |= 256;
		if ( stencil === undefined || stencil ) bits |= 1024;
		_gl.clear( bits );
	};
	this.clearColor = function () {
		this.clear( true, false, false );
	};
	this.clearDepth = function () {
		this.clear( false, true, false );
	};
	this.clearStencil = function () {
		this.clear( false, false, true );
	};
	this.dispose = function () {
		_canvas.removeEventListener( 'webglcontextlost', onContextLost, false );
		_canvas.removeEventListener( 'webglcontextrestored', onContextRestore, false );
		renderLists.dispose();
		renderStates.dispose();
		properties.dispose();
		cubemaps.dispose();
		objects.dispose();
		bindingStates.dispose();
		xr.dispose();
		animation.stop();
	};
	function onContextLost( event ) {
		event.preventDefault();
		console.log( 'THREE.WebGLRenderer: Context Lost.' );
		_isContextLost = true;
	}
	function onContextRestore(  ) {
		console.log( 'THREE.WebGLRenderer: Context Restored.' );
		_isContextLost = false;
		initGLContext();
	}
	function onMaterialDispose( event ) {
		const material = event.target;
		material.removeEventListener( 'dispose', onMaterialDispose );
		deallocateMaterial( material );
	}
	function deallocateMaterial( material ) {
		releaseMaterialProgramReference( material );
		properties.remove( material );
	}
	function releaseMaterialProgramReference( material ) {
		const programInfo = properties.get( material ).program;
		if ( programInfo !== undefined ) {
			programCache.releaseProgram( programInfo );
		}
	}
	function renderObjectImmediate( object, program ) {
		object.render( function ( object ) {
			_this.renderBufferImmediate( object, program );
		} );
	}
	this.renderBufferImmediate = function ( object, program ) {
		bindingStates.initAttributes();
		const buffers = properties.get( object );
		if ( object.hasPositions && ! buffers.position ) buffers.position = _gl.createBuffer();
		if ( object.hasNormals && ! buffers.normal ) buffers.normal = _gl.createBuffer();
		if ( object.hasUvs && ! buffers.uv ) buffers.uv = _gl.createBuffer();
		if ( object.hasColors && ! buffers.color ) buffers.color = _gl.createBuffer();
		const programAttributes = program.getAttributes();
		if ( object.hasPositions ) {
			_gl.bindBuffer( 34962, buffers.position );
			_gl.bufferData( 34962, object.positionArray, 35048 );
			bindingStates.enableAttribute( programAttributes.position );
			_gl.vertexAttribPointer( programAttributes.position, 3, 5126, false, 0, 0 );
		}
		if ( object.hasNormals ) {
			_gl.bindBuffer( 34962, buffers.normal );
			_gl.bufferData( 34962, object.normalArray, 35048 );
			bindingStates.enableAttribute( programAttributes.normal );
			_gl.vertexAttribPointer( programAttributes.normal, 3, 5126, false, 0, 0 );
		}
		if ( object.hasUvs ) {
			_gl.bindBuffer( 34962, buffers.uv );
			_gl.bufferData( 34962, object.uvArray, 35048 );
			bindingStates.enableAttribute( programAttributes.uv );
			_gl.vertexAttribPointer( programAttributes.uv, 2, 5126, false, 0, 0 );
		}
		if ( object.hasColors ) {
			_gl.bindBuffer( 34962, buffers.color );
			_gl.bufferData( 34962, object.colorArray, 35048 );
			bindingStates.enableAttribute( programAttributes.color );
			_gl.vertexAttribPointer( programAttributes.color, 3, 5126, false, 0, 0 );
		}
		bindingStates.disableUnusedAttributes();
		_gl.drawArrays( 4, 0, object.count );
		object.count = 0;
	};
	this.renderBufferDirect = function ( camera, scene, geometry, material, object, group ) {
		if ( scene === null ) scene = _emptyScene;
		const frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );
		const program = setProgram( camera, scene, material, object );
		state.setMaterial( material, frontFaceCW );
		let index = geometry.index;
		const position = geometry.attributes.position;
		if ( index === null ) {
			if ( position === undefined || position.count === 0 ) return;
		} else if ( index.count === 0 ) {
			return;
		}
		let rangeFactor = 1;
		if ( material.wireframe === true ) {
			index = geometries.getWireframeAttribute( geometry );
			rangeFactor = 2;
		}
		if ( material.morphTargets || material.morphNormals ) {
			morphtargets.update( object, geometry, material, program );
		}
		bindingStates.setup( object, material, program, geometry, index );
		let attribute;
		let renderer = bufferRenderer;
		if ( index !== null ) {
			attribute = attributes.get( index );
			renderer = indexedBufferRenderer;
			renderer.setIndex( attribute );
		}
		const dataCount = ( index !== null ) ? index.count : position.count;
		const rangeStart = geometry.drawRange.start * rangeFactor;
		const rangeCount = geometry.drawRange.count * rangeFactor;
		const groupStart = group !== null ? group.start * rangeFactor : 0;
		const groupCount = group !== null ? group.count * rangeFactor : Infinity;
		const drawStart = Math.max( rangeStart, groupStart );
		const drawEnd = Math.min( dataCount, rangeStart + rangeCount, groupStart + groupCount ) - 1;
		const drawCount = Math.max( 0, drawEnd - drawStart + 1 );
		if ( drawCount === 0 ) return;
		if ( object.isMesh ) {
			if ( material.wireframe === true ) {
				state.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );
				renderer.setMode( 1 );
			} else {
				renderer.setMode( 4 );
			}
		} else if ( object.isLine ) {
			let lineWidth = material.linewidth;
			if ( lineWidth === undefined ) lineWidth = 1;
			state.setLineWidth( lineWidth * getTargetPixelRatio() );
			if ( object.isLineSegments ) {
				renderer.setMode( 1 );
			} else if ( object.isLineLoop ) {
				renderer.setMode( 2 );
			} else {
				renderer.setMode( 3 );
			}
		} else if ( object.isPoints ) {
			renderer.setMode( 0 );
		} else if ( object.isSprite ) {
			renderer.setMode( 4 );
		}
		if ( object.isInstancedMesh ) {
			renderer.renderInstances( drawStart, drawCount, object.count );
		} else if ( geometry.isInstancedBufferGeometry ) {
			const instanceCount = Math.min( geometry.instanceCount, geometry._maxInstanceCount );
			renderer.renderInstances( drawStart, drawCount, instanceCount );
		} else {
			renderer.render( drawStart, drawCount );
		}
	};
	this.compile = function ( scene, camera ) {
		currentRenderState = renderStates.get( scene, camera );
		currentRenderState.init();
		scene.traverse( function ( object ) {
			if ( object.isLight ) {
				currentRenderState.pushLight( object );
				if ( object.castShadow ) {
					currentRenderState.pushShadow( object );
				}
			}
		} );
		currentRenderState.setupLights( camera );
		const compiled = new WeakMap();
		scene.traverse( function ( object ) {
			const material = object.material;
			if ( material ) {
				if ( Array.isArray( material ) ) {
					for ( let i = 0; i < material.length; i ++ ) {
						const material2 = material[ i ];
						if ( compiled.has( material2 ) === false ) {
							initMaterial( material2, scene, object );
							compiled.set( material2 );
						}
					}
				} else if ( compiled.has( material ) === false ) {
					initMaterial( material, scene, object );
					compiled.set( material );
				}
			}
		} );
	};
	let onAnimationFrameCallback = null;
	function onAnimationFrame( time ) {
		if ( xr.isPresenting ) return;
		if ( onAnimationFrameCallback ) onAnimationFrameCallback( time );
	}
	const animation = new WebGLAnimation();
	animation.setAnimationLoop( onAnimationFrame );
	if ( typeof window !== 'undefined' ) animation.setContext( window );
	this.setAnimationLoop = function ( callback ) {
		onAnimationFrameCallback = callback;
		xr.setAnimationLoop( callback );
		( callback === null ) ? animation.stop() : animation.start();
	};
	this.render = function ( scene, camera ) {
		let renderTarget, forceClear;
		if ( arguments[ 2 ] !== undefined ) {
			console.warn( 'THREE.WebGLRenderer.render(): the renderTarget argument has been removed. Use .setRenderTarget() instead.' );
			renderTarget = arguments[ 2 ];
		}
		if ( arguments[ 3 ] !== undefined ) {
			console.warn( 'THREE.WebGLRenderer.render(): the forceClear argument has been removed. Use .clear() instead.' );
			forceClear = arguments[ 3 ];
		}
		if ( camera !== undefined && camera.isCamera !== true ) {
			console.error( 'THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.' );
			return;
		}
		if ( _isContextLost === true ) return;
		bindingStates.resetDefaultState();
		_currentMaterialId = - 1;
		_currentCamera = null;
		if ( scene.autoUpdate === true ) scene.updateMatrixWorld();
		if ( camera.parent === null ) camera.updateMatrixWorld();
		if ( xr.enabled === true && xr.isPresenting === true ) {
			camera = xr.getCamera( camera );
		}
		if ( scene.isScene === true ) scene.onBeforeRender( _this, scene, camera, renderTarget || _currentRenderTarget );
		currentRenderState = renderStates.get( scene, camera );
		currentRenderState.init();
		_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
		_frustum.setFromProjectionMatrix( _projScreenMatrix );
		_localClippingEnabled = this.localClippingEnabled;
		_clippingEnabled = clipping.init( this.clippingPlanes, _localClippingEnabled, camera );
		currentRenderList = renderLists.get( scene, camera );
		currentRenderList.init();
		projectObject( scene, camera, 0, _this.sortObjects );
		currentRenderList.finish();
		if ( _this.sortObjects === true ) {
			currentRenderList.sort( _opaqueSort, _transparentSort );
		}
		if ( _clippingEnabled === true ) clipping.beginShadows();
		const shadowsArray = currentRenderState.state.shadowsArray;
		shadowMap.render( shadowsArray, scene, camera );
		currentRenderState.setupLights( camera );
		if ( _clippingEnabled === true ) clipping.endShadows();
		if ( this.info.autoReset === true ) this.info.reset();
		if ( renderTarget !== undefined ) {
			this.setRenderTarget( renderTarget );
		}
		background.render( currentRenderList, scene, camera, forceClear );
		const opaqueObjects = currentRenderList.opaque;
		const transparentObjects = currentRenderList.transparent;
		if ( opaqueObjects.length > 0 ) renderObjects( opaqueObjects, scene, camera );
		if ( transparentObjects.length > 0 ) renderObjects( transparentObjects, scene, camera );
		if ( scene.isScene === true ) scene.onAfterRender( _this, scene, camera );
		if ( _currentRenderTarget !== null ) {
			textures.updateRenderTargetMipmap( _currentRenderTarget );
			textures.updateMultisampleRenderTarget( _currentRenderTarget );
		}
		state.buffers.depth.setTest( true );
		state.buffers.depth.setMask( true );
		state.buffers.color.setMask( true );
		state.setPolygonOffset( false );
		currentRenderList = null;
		currentRenderState = null;
	};
	function projectObject( object, camera, groupOrder, sortObjects ) {
		if ( object.visible === false ) return;
		const visible = object.layers.test( camera.layers );
		if ( visible ) {
			if ( object.isGroup ) {
				groupOrder = object.renderOrder;
			} else if ( object.isLOD ) {
				if ( object.autoUpdate === true ) object.update( camera );
			} else if ( object.isLight ) {
				currentRenderState.pushLight( object );
				if ( object.castShadow ) {
					currentRenderState.pushShadow( object );
				}
			} else if ( object.isSprite ) {
				if ( ! object.frustumCulled || _frustum.intersectsSprite( object ) ) {
					if ( sortObjects ) {
						_vector3.setFromMatrixPosition( object.matrixWorld )
							.applyMatrix4( _projScreenMatrix );
					}
					const geometry = objects.update( object );
					const material = object.material;
					if ( material.visible ) {
						currentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );
					}
				}
			} else if ( object.isImmediateRenderObject ) {
				if ( sortObjects ) {
					_vector3.setFromMatrixPosition( object.matrixWorld )
						.applyMatrix4( _projScreenMatrix );
				}
				currentRenderList.push( object, null, object.material, groupOrder, _vector3.z, null );
			} else if ( object.isMesh || object.isLine || object.isPoints ) {
				if ( object.isSkinnedMesh ) {
					if ( object.skeleton.frame !== info.render.frame ) {
						object.skeleton.update();
						object.skeleton.frame = info.render.frame;
					}
				}
				if ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) {
					if ( sortObjects ) {
						_vector3.setFromMatrixPosition( object.matrixWorld )
							.applyMatrix4( _projScreenMatrix );
					}
					const geometry = objects.update( object );
					const material = object.material;
					if ( Array.isArray( material ) ) {
						const groups = geometry.groups;
						for ( let i = 0, l = groups.length; i < l; i ++ ) {
							const group = groups[ i ];
							const groupMaterial = material[ group.materialIndex ];
							if ( groupMaterial && groupMaterial.visible ) {
								currentRenderList.push( object, geometry, groupMaterial, groupOrder, _vector3.z, group );
							}
						}
					} else if ( material.visible ) {
						currentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );
					}
				}
			}
		}
		const children = object.children;
		for ( let i = 0, l = children.length; i < l; i ++ ) {
			projectObject( children[ i ], camera, groupOrder, sortObjects );
		}
	}
	function renderObjects( renderList, scene, camera ) {
		const overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;
		for ( let i = 0, l = renderList.length; i < l; i ++ ) {
			const renderItem = renderList[ i ];
			const object = renderItem.object;
			const geometry = renderItem.geometry;
			const material = overrideMaterial === null ? renderItem.material : overrideMaterial;
			const group = renderItem.group;
			if ( camera.isArrayCamera ) {
				_currentArrayCamera = camera;
				const cameras = camera.cameras;
				for ( let j = 0, jl = cameras.length; j < jl; j ++ ) {
					const camera2 = cameras[ j ];
					if ( object.layers.test( camera2.layers ) ) {
						state.viewport( _currentViewport.copy( camera2.viewport ) );
						currentRenderState.setupLights( camera2 );
						renderObject( object, scene, camera2, geometry, material, group );
					}
				}
			} else {
				_currentArrayCamera = null;
				renderObject( object, scene, camera, geometry, material, group );
			}
		}
	}
	function renderObject( object, scene, camera, geometry, material, group ) {
		object.onBeforeRender( _this, scene, camera, geometry, material, group );
		currentRenderState = renderStates.get( scene, _currentArrayCamera || camera );
		object.modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );
		object.normalMatrix.getNormalMatrix( object.modelViewMatrix );
		if ( object.isImmediateRenderObject ) {
			const program = setProgram( camera, scene, material, object );
			state.setMaterial( material );
			bindingStates.reset();
			renderObjectImmediate( object, program );
		} else {
			_this.renderBufferDirect( camera, scene, geometry, material, object, group );
		}
		object.onAfterRender( _this, scene, camera, geometry, material, group );
		currentRenderState = renderStates.get( scene, _currentArrayCamera || camera );
	}
	function initMaterial( material, scene, object ) {
		if ( scene.isScene !== true ) scene = _emptyScene;
		const materialProperties = properties.get( material );
		const lights = currentRenderState.state.lights;
		const shadowsArray = currentRenderState.state.shadowsArray;
		const lightsStateVersion = lights.state.version;
		const parameters = programCache.getParameters( material, lights.state, shadowsArray, scene, object );
		const programCacheKey = programCache.getProgramCacheKey( parameters );
		let program = materialProperties.program;
		let programChange = true;
		if ( program === undefined ) {
			material.addEventListener( 'dispose', onMaterialDispose );
		} else if ( program.cacheKey !== programCacheKey ) {
			releaseMaterialProgramReference( material );
		} else if ( materialProperties.lightsStateVersion !== lightsStateVersion ) {
			programChange = false;
		} else if ( parameters.shaderID !== undefined ) {
			const environment = material.isMeshStandardMaterial ? scene.environment : null;
			materialProperties.envMap = cubemaps.get( material.envMap || environment );
			return;
		} else {
			programChange = false;
		}
		if ( programChange ) {
			parameters.uniforms = programCache.getUniforms( material );
			material.onBeforeCompile( parameters, _this );
			program = programCache.acquireProgram( parameters, programCacheKey );
			materialProperties.program = program;
			materialProperties.uniforms = parameters.uniforms;
			materialProperties.outputEncoding = parameters.outputEncoding;
		}
		const uniforms = materialProperties.uniforms;
		if ( ! material.isShaderMaterial &&
			! material.isRawShaderMaterial ||
			material.clipping === true ) {
			materialProperties.numClippingPlanes = clipping.numPlanes;
			materialProperties.numIntersection = clipping.numIntersection;
			uniforms.clippingPlanes = clipping.uniform;
		}
		materialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;
		materialProperties.fog = scene.fog;
		materialProperties.envMap = cubemaps.get( material.envMap || materialProperties.environment );
		materialProperties.needsLights = materialNeedsLights( material );
		materialProperties.lightsStateVersion = lightsStateVersion;
		if ( materialProperties.needsLights ) {
			uniforms.ambientLightColor.value = lights.state.ambient;
			uniforms.lightProbe.value = lights.state.probe;
			uniforms.directionalLights.value = lights.state.directional;
			uniforms.directionalLightShadows.value = lights.state.directionalShadow;
			uniforms.spotLights.value = lights.state.spot;
			uniforms.spotLightShadows.value = lights.state.spotShadow;
			uniforms.rectAreaLights.value = lights.state.rectArea;
			uniforms.ltc_1.value = lights.state.rectAreaLTC1;
			uniforms.ltc_2.value = lights.state.rectAreaLTC2;
			uniforms.pointLights.value = lights.state.point;
			uniforms.pointLightShadows.value = lights.state.pointShadow;
			uniforms.hemisphereLights.value = lights.state.hemi;
			uniforms.directionalShadowMap.value = lights.state.directionalShadowMap;
			uniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;
			uniforms.spotShadowMap.value = lights.state.spotShadowMap;
			uniforms.spotShadowMatrix.value = lights.state.spotShadowMatrix;
			uniforms.pointShadowMap.value = lights.state.pointShadowMap;
			uniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix;
		}
		const progUniforms = materialProperties.program.getUniforms();
		const uniformsList = WebGLUniforms.seqWithValue( progUniforms.seq, uniforms );
		materialProperties.uniformsList = uniformsList;
	}
	function setProgram( camera, scene, material, object ) {
		if ( scene.isScene !== true ) scene = _emptyScene;
		textures.resetTextureUnits();
		const fog = scene.fog;
		const environment = material.isMeshStandardMaterial ? scene.environment : null;
		const encoding = ( _currentRenderTarget === null ) ? _this.outputEncoding : _currentRenderTarget.texture.encoding;
		const envMap = cubemaps.get( material.envMap || environment );
		const materialProperties = properties.get( material );
		const lights = currentRenderState.state.lights;
		if ( _clippingEnabled === true ) {
			if ( _localClippingEnabled === true || camera !== _currentCamera ) {
				const useCache =
					camera === _currentCamera &&
					material.id === _currentMaterialId;
				clipping.setState( material, camera, useCache );
			}
		}
		if ( material.version === materialProperties.__version ) {
			if ( material.fog && materialProperties.fog !== fog ) {
				initMaterial( material, scene, object );
			} else if ( materialProperties.environment !== environment ) {
				initMaterial( material, scene, object );
			} else if ( materialProperties.needsLights && ( materialProperties.lightsStateVersion !== lights.state.version ) ) {
				initMaterial( material, scene, object );
			} else if ( materialProperties.numClippingPlanes !== undefined &&
				( materialProperties.numClippingPlanes !== clipping.numPlanes ||
				materialProperties.numIntersection !== clipping.numIntersection ) ) {
				initMaterial( material, scene, object );
			} else if ( materialProperties.outputEncoding !== encoding ) {
				initMaterial( material, scene, object );
			} else if ( materialProperties.envMap !== envMap ) {
				initMaterial( material, scene, object );
			}
		} else {
			initMaterial( material, scene, object );
			materialProperties.__version = material.version;
		}
		let refreshProgram = false;
		let refreshMaterial = false;
		let refreshLights = false;
		const program = materialProperties.program,
			p_uniforms = program.getUniforms(),
			m_uniforms = materialProperties.uniforms;
		if ( state.useProgram( program.program ) ) {
			refreshProgram = true;
			refreshMaterial = true;
			refreshLights = true;
		}
		if ( material.id !== _currentMaterialId ) {
			_currentMaterialId = material.id;
			refreshMaterial = true;
		}
		if ( refreshProgram || _currentCamera !== camera ) {
			p_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );
			if ( capabilities.logarithmicDepthBuffer ) {
				p_uniforms.setValue( _gl, 'logDepthBufFC',
					2.0 / ( Math.log( camera.far + 1.0 ) / Math.LN2 ) );
			}
			if ( _currentCamera !== camera ) {
				_currentCamera = camera;
				refreshMaterial = true;
				refreshLights = true;
			}
			if ( material.isShaderMaterial ||
				material.isMeshPhongMaterial ||
				material.isMeshToonMaterial ||
				material.isMeshStandardMaterial ||
				material.envMap ) {
				const uCamPos = p_uniforms.map.cameraPosition;
				if ( uCamPos !== undefined ) {
					uCamPos.setValue( _gl,
						_vector3.setFromMatrixPosition( camera.matrixWorld ) );
				}
			}
			if ( material.isMeshPhongMaterial ||
				material.isMeshToonMaterial ||
				material.isMeshLambertMaterial ||
				material.isMeshBasicMaterial ||
				material.isMeshStandardMaterial ||
				material.isShaderMaterial ) {
				p_uniforms.setValue( _gl, 'isOrthographic', camera.isOrthographicCamera === true );
			}
			if ( material.isMeshPhongMaterial ||
				material.isMeshToonMaterial ||
				material.isMeshLambertMaterial ||
				material.isMeshBasicMaterial ||
				material.isMeshStandardMaterial ||
				material.isShaderMaterial ||
				material.isShadowMaterial ||
				material.skinning ) {
				p_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );
			}
		}
		if ( material.skinning ) {
			p_uniforms.setOptional( _gl, object, 'bindMatrix' );
			p_uniforms.setOptional( _gl, object, 'bindMatrixInverse' );
			const skeleton = object.skeleton;
			if ( skeleton ) {
				const bones = skeleton.bones;
				if ( capabilities.floatVertexTextures ) {
					if ( skeleton.boneTexture === undefined ) {
						let size = Math.sqrt( bones.length * 4 );
						size = MathUtils.ceilPowerOfTwo( size );
						size = Math.max( size, 4 );
						const boneMatrices = new Float32Array( size * size * 4 );
						boneMatrices.set( skeleton.boneMatrices );
						const boneTexture = new DataTexture( boneMatrices, size, size, RGBAFormat, FloatType );
						skeleton.boneMatrices = boneMatrices;
						skeleton.boneTexture = boneTexture;
						skeleton.boneTextureSize = size;
					}
					p_uniforms.setValue( _gl, 'boneTexture', skeleton.boneTexture, textures );
					p_uniforms.setValue( _gl, 'boneTextureSize', skeleton.boneTextureSize );
				} else {
					p_uniforms.setOptional( _gl, skeleton, 'boneMatrices' );
				}
			}
		}
		if ( refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow ) {
			materialProperties.receiveShadow = object.receiveShadow;
			p_uniforms.setValue( _gl, 'receiveShadow', object.receiveShadow );
		}
		if ( refreshMaterial ) {
			p_uniforms.setValue( _gl, 'toneMappingExposure', _this.toneMappingExposure );
			if ( materialProperties.needsLights ) {
				markUniformsLightsNeedsUpdate( m_uniforms, refreshLights );
			}
			if ( fog && material.fog ) {
				materials.refreshFogUniforms( m_uniforms, fog );
			}
			materials.refreshMaterialUniforms( m_uniforms, material, _pixelRatio, _height );
			WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );
		}
		if ( material.isShaderMaterial && material.uniformsNeedUpdate === true ) {
			WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );
			material.uniformsNeedUpdate = false;
		}
		if ( material.isSpriteMaterial ) {
			p_uniforms.setValue( _gl, 'center', object.center );
		}
		p_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );
		p_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );
		p_uniforms.setValue( _gl, 'modelMatrix', object.matrixWorld );
		return program;
	}
	function markUniformsLightsNeedsUpdate( uniforms, value ) {
		uniforms.ambientLightColor.needsUpdate = value;
		uniforms.lightProbe.needsUpdate = value;
		uniforms.directionalLights.needsUpdate = value;
		uniforms.directionalLightShadows.needsUpdate = value;
		uniforms.pointLights.needsUpdate = value;
		uniforms.pointLightShadows.needsUpdate = value;
		uniforms.spotLights.needsUpdate = value;
		uniforms.spotLightShadows.needsUpdate = value;
		uniforms.rectAreaLights.needsUpdate = value;
		uniforms.hemisphereLights.needsUpdate = value;
	}
	function materialNeedsLights( material ) {
		return material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial ||
			material.isMeshStandardMaterial || material.isShadowMaterial ||
			( material.isShaderMaterial && material.lights === true );
	}
	this.setFramebuffer = function ( value ) {
		if ( _framebuffer !== value && _currentRenderTarget === null ) _gl.bindFramebuffer( 36160, value );
		_framebuffer = value;
	};
	this.getActiveCubeFace = function () {
		return _currentActiveCubeFace;
	};
	this.getActiveMipmapLevel = function () {
		return _currentActiveMipmapLevel;
	};
	this.getRenderList = function () {
		return currentRenderList;
	};
	this.setRenderList = function ( renderList ) {
		currentRenderList = renderList;
	};
	this.getRenderState = function () {
		return currentRenderState;
	};
	this.setRenderState = function ( renderState ) {
		currentRenderState = renderState;
	};
	this.getRenderTarget = function () {
		return _currentRenderTarget;
	};
	this.setRenderTarget = function ( renderTarget, activeCubeFace = 0, activeMipmapLevel = 0 ) {
		_currentRenderTarget = renderTarget;
		_currentActiveCubeFace = activeCubeFace;
		_currentActiveMipmapLevel = activeMipmapLevel;
		if ( renderTarget && properties.get( renderTarget ).__webglFramebuffer === undefined ) {
			textures.setupRenderTarget( renderTarget );
		}
		let framebuffer = _framebuffer;
		let isCube = false;
		if ( renderTarget ) {
			const __webglFramebuffer = properties.get( renderTarget ).__webglFramebuffer;
			if ( renderTarget.isWebGLCubeRenderTarget ) {
				framebuffer = __webglFramebuffer[ activeCubeFace ];
				isCube = true;
			} else if ( renderTarget.isWebGLMultisampleRenderTarget ) {
				framebuffer = properties.get( renderTarget ).__webglMultisampledFramebuffer;
			} else {
				framebuffer = __webglFramebuffer;
			}
			_currentViewport.copy( renderTarget.viewport );
			_currentScissor.copy( renderTarget.scissor );
			_currentScissorTest = renderTarget.scissorTest;
		} else {
			_currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor();
			_currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor();
			_currentScissorTest = _scissorTest;
		}
		if ( _currentFramebuffer !== framebuffer ) {
			_gl.bindFramebuffer( 36160, framebuffer );
			_currentFramebuffer = framebuffer;
		}
		state.viewport( _currentViewport );
		state.scissor( _currentScissor );
		state.setScissorTest( _currentScissorTest );
		if ( isCube ) {
			const textureProperties = properties.get( renderTarget.texture );
			_gl.framebufferTexture2D( 36160, 36064, 34069 + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel );
		}
	};
	this.readRenderTargetPixels = function ( renderTarget, x, y, width, height, buffer, activeCubeFaceIndex ) {
		if ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {
			console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );
			return;
		}
		let framebuffer = properties.get( renderTarget ).__webglFramebuffer;
		if ( renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined ) {
			framebuffer = framebuffer[ activeCubeFaceIndex ];
		}
		if ( framebuffer ) {
			let restore = false;
			if ( framebuffer !== _currentFramebuffer ) {
				_gl.bindFramebuffer( 36160, framebuffer );
				restore = true;
			}
			try {
				const texture = renderTarget.texture;
				const textureFormat = texture.format;
				const textureType = texture.type;
				if ( textureFormat !== RGBAFormat && utils.convert( textureFormat ) !== _gl.getParameter( 35739 ) ) {
					console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.' );
					return;
				}
				if ( textureType !== UnsignedByteType && utils.convert( textureType ) !== _gl.getParameter( 35738 ) &&
					! ( textureType === FloatType && ( capabilities.isWebGL2 || extensions.get( 'OES_texture_float' ) || extensions.get( 'WEBGL_color_buffer_float' ) ) ) &&
					! ( textureType === HalfFloatType && ( capabilities.isWebGL2 ? extensions.get( 'EXT_color_buffer_float' ) : extensions.get( 'EXT_color_buffer_half_float' ) ) ) ) {
					console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.' );
					return;
				}
				if ( _gl.checkFramebufferStatus( 36160 ) === 36053 ) {
					if ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {
						_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), buffer );
					}
				} else {
					console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: readPixels from renderTarget failed. Framebuffer not complete.' );
				}
			} finally {
				if ( restore ) {
					_gl.bindFramebuffer( 36160, _currentFramebuffer );
				}
			}
		}
	};
	this.copyFramebufferToTexture = function ( position, texture, level ) {
		if ( level === undefined ) level = 0;
		const levelScale = Math.pow( 2, - level );
		const width = Math.floor( texture.image.width * levelScale );
		const height = Math.floor( texture.image.height * levelScale );
		const glFormat = utils.convert( texture.format );
		textures.setTexture2D( texture, 0 );
		_gl.copyTexImage2D( 3553, level, glFormat, position.x, position.y, width, height, 0 );
		state.unbindTexture();
	};
	this.copyTextureToTexture = function ( position, srcTexture, dstTexture, level ) {
		if ( level === undefined ) level = 0;
		const width = srcTexture.image.width;
		const height = srcTexture.image.height;
		const glFormat = utils.convert( dstTexture.format );
		const glType = utils.convert( dstTexture.type );
		textures.setTexture2D( dstTexture, 0 );
		_gl.pixelStorei( 37440, dstTexture.flipY );
		_gl.pixelStorei( 37441, dstTexture.premultiplyAlpha );
		_gl.pixelStorei( 3317, dstTexture.unpackAlignment );
		if ( srcTexture.isDataTexture ) {
			_gl.texSubImage2D( 3553, level, position.x, position.y, width, height, glFormat, glType, srcTexture.image.data );
		} else {
			if ( srcTexture.isCompressedTexture ) {
				_gl.compressedTexSubImage2D( 3553, level, position.x, position.y, srcTexture.mipmaps[ 0 ].width, srcTexture.mipmaps[ 0 ].height, glFormat, srcTexture.mipmaps[ 0 ].data );
			} else {
				_gl.texSubImage2D( 3553, level, position.x, position.y, glFormat, glType, srcTexture.image );
			}
		}
		if ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( 3553 );
		state.unbindTexture();
	};
	this.initTexture = function ( texture ) {
		textures.setTexture2D( texture, 0 );
		state.unbindTexture();
	};
	if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
		__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );
	}
}
function WebGL1Renderer( parameters ) {
	WebGLRenderer.call( this, parameters );
}
WebGL1Renderer.prototype = Object.assign( Object.create( WebGLRenderer.prototype ), {
	constructor: WebGL1Renderer,
	isWebGL1Renderer: true
} );
class FogExp2 {
	constructor( color, density ) {
		Object.defineProperty( this, 'isFogExp2', { value: true } );
		this.name = '';
		this.color = new Color( color );
		this.density = ( density !== undefined ) ? density : 0.00025;
	}
	clone() {
		return new FogExp2( this.color, this.density );
	}
	toJSON(  ) {
		return {
			type: 'FogExp2',
			color: this.color.getHex(),
			density: this.density
		};
	}
}
class Fog {
	constructor( color, near, far ) {
		Object.defineProperty( this, 'isFog', { value: true } );
		this.name = '';
		this.color = new Color( color );
		this.near = ( near !== undefined ) ? near : 1;
		this.far = ( far !== undefined ) ? far : 1000;
	}
	clone() {
		return new Fog( this.color, this.near, this.far );
	}
	toJSON(  ) {
		return {
			type: 'Fog',
			color: this.color.getHex(),
			near: this.near,
			far: this.far
		};
	}
}
class Scene extends Object3D {
	constructor() {
		super();
		Object.defineProperty( this, 'isScene', { value: true } );
		this.type = 'Scene';
		this.background = null;
		this.environment = null;
		this.fog = null;
		this.overrideMaterial = null;
		this.autoUpdate = true;
		if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
			__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );
		}
	}
	copy( source, recursive ) {
		super.copy( source, recursive );
		if ( source.background !== null ) this.background = source.background.clone();
		if ( source.environment !== null ) this.environment = source.environment.clone();
		if ( source.fog !== null ) this.fog = source.fog.clone();
		if ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();
		this.autoUpdate = source.autoUpdate;
		this.matrixAutoUpdate = source.matrixAutoUpdate;
		return this;
	}
	toJSON( meta ) {
		const data = super.toJSON( meta );
		if ( this.background !== null ) data.object.background = this.background.toJSON( meta );
		if ( this.environment !== null ) data.object.environment = this.environment.toJSON( meta );
		if ( this.fog !== null ) data.object.fog = this.fog.toJSON();
		return data;
	}
}
function InterleavedBuffer( array, stride ) {
	this.array = array;
	this.stride = stride;
	this.count = array !== undefined ? array.length / stride : 0;
	this.usage = StaticDrawUsage;
	this.updateRange = { offset: 0, count: - 1 };
	this.version = 0;
	this.uuid = MathUtils.generateUUID();
}
Object.defineProperty( InterleavedBuffer.prototype, 'needsUpdate', {
	set: function ( value ) {
		if ( value === true ) this.version ++;
	}
} );
Object.assign( InterleavedBuffer.prototype, {
	isInterleavedBuffer: true,
	onUploadCallback: function () {},
	setUsage: function ( value ) {
		this.usage = value;
		return this;
	},
	copy: function ( source ) {
		this.array = new source.array.constructor( source.array );
		this.count = source.count;
		this.stride = source.stride;
		this.usage = source.usage;
		return this;
	},
	copyAt: function ( index1, attribute, index2 ) {
		index1 *= this.stride;
		index2 *= attribute.stride;
		for ( let i = 0, l = this.stride; i < l; i ++ ) {
			this.array[ index1 + i ] = attribute.array[ index2 + i ];
		}
		return this;
	},
	set: function ( value, offset ) {
		if ( offset === undefined ) offset = 0;
		this.array.set( value, offset );
		return this;
	},
	clone: function ( data ) {
		if ( data.arrayBuffers === undefined ) {
			data.arrayBuffers = {};
		}
		if ( this.array.buffer._uuid === undefined ) {
			this.array.buffer._uuid = MathUtils.generateUUID();
		}
		if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {
			data.arrayBuffers[ this.array.buffer._uuid ] = this.array.slice( 0 ).buffer;
		}
		const array = new this.array.constructor( data.arrayBuffers[ this.array.buffer._uuid ] );
		const ib = new InterleavedBuffer( array, this.stride );
		ib.setUsage( this.usage );
		return ib;
	},
	onUpload: function ( callback ) {
		this.onUploadCallback = callback;
		return this;
	},
	toJSON: function ( data ) {
		if ( data.arrayBuffers === undefined ) {
			data.arrayBuffers = {};
		}
		if ( this.array.buffer._uuid === undefined ) {
			this.array.buffer._uuid = MathUtils.generateUUID();
		}
		if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {
			data.arrayBuffers[ this.array.buffer._uuid ] = Array.prototype.slice.call( new Uint32Array( this.array.buffer ) );
		}
		return {
			uuid: this.uuid,
			buffer: this.array.buffer._uuid,
			type: this.array.constructor.name,
			stride: this.stride
		};
	}
} );
const _vector$6 = new Vector3();
function InterleavedBufferAttribute( interleavedBuffer, itemSize, offset, normalized ) {
	this.name = '';
	this.data = interleavedBuffer;
	this.itemSize = itemSize;
	this.offset = offset;
	this.normalized = normalized === true;
}
Object.defineProperties( InterleavedBufferAttribute.prototype, {
	count: {
		get: function () {
			return this.data.count;
		}
	},
	array: {
		get: function () {
			return this.data.array;
		}
	},
	needsUpdate: {
		set: function ( value ) {
			this.data.needsUpdate = value;
		}
	}
} );
Object.assign( InterleavedBufferAttribute.prototype, {
	isInterleavedBufferAttribute: true,
	applyMatrix4: function ( m ) {
		for ( let i = 0, l = this.data.count; i < l; i ++ ) {
			_vector$6.x = this.getX( i );
			_vector$6.y = this.getY( i );
			_vector$6.z = this.getZ( i );
			_vector$6.applyMatrix4( m );
			this.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );
		}
		return this;
	},
	setX: function ( index, x ) {
		this.data.array[ index * this.data.stride + this.offset ] = x;
		return this;
	},
	setY: function ( index, y ) {
		this.data.array[ index * this.data.stride + this.offset + 1 ] = y;
		return this;
	},
	setZ: function ( index, z ) {
		this.data.array[ index * this.data.stride + this.offset + 2 ] = z;
		return this;
	},
	setW: function ( index, w ) {
		this.data.array[ index * this.data.stride + this.offset + 3 ] = w;
		return this;
	},
	getX: function ( index ) {
		return this.data.array[ index * this.data.stride + this.offset ];
	},
	getY: function ( index ) {
		return this.data.array[ index * this.data.stride + this.offset + 1 ];
	},
	getZ: function ( index ) {
		return this.data.array[ index * this.data.stride + this.offset + 2 ];
	},
	getW: function ( index ) {
		return this.data.array[ index * this.data.stride + this.offset + 3 ];
	},
	setXY: function ( index, x, y ) {
		index = index * this.data.stride + this.offset;
		this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;
		return this;
	},
	setXYZ: function ( index, x, y, z ) {
		index = index * this.data.stride + this.offset;
		this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;
		this.data.array[ index + 2 ] = z;
		return this;
	},
	setXYZW: function ( index, x, y, z, w ) {
		index = index * this.data.stride + this.offset;
		this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;
		this.data.array[ index + 2 ] = z;
		this.data.array[ index + 3 ] = w;
		return this;
	},
	clone: function ( data ) {
		if ( data === undefined ) {
			console.log( 'THREE.InterleavedBufferAttribute.clone(): Cloning an interlaved buffer attribute will deinterleave buffer data.' );
			const array = [];
			for ( let i = 0; i < this.count; i ++ ) {
				const index = i * this.data.stride + this.offset;
				for ( let j = 0; j < this.itemSize; j ++ ) {
					array.push( this.data.array[ index + j ] );
				}
			}
			return new BufferAttribute( new this.array.constructor( array ), this.itemSize, this.normalized );
		} else {
			if ( data.interleavedBuffers === undefined ) {
				data.interleavedBuffers = {};
			}
			if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {
				data.interleavedBuffers[ this.data.uuid ] = this.data.clone( data );
			}
			return new InterleavedBufferAttribute( data.interleavedBuffers[ this.data.uuid ], this.itemSize, this.offset, this.normalized );
		}
	},
	toJSON: function ( data ) {
		if ( data === undefined ) {
			console.log( 'THREE.InterleavedBufferAttribute.toJSON(): Serializing an interlaved buffer attribute will deinterleave buffer data.' );
			const array = [];
			for ( let i = 0; i < this.count; i ++ ) {
				const index = i * this.data.stride + this.offset;
				for ( let j = 0; j < this.itemSize; j ++ ) {
					array.push( this.data.array[ index + j ] );
				}
			}
			return {
				itemSize: this.itemSize,
				type: this.array.constructor.name,
				array: array,
				normalized: this.normalized
			};
		} else {
			if ( data.interleavedBuffers === undefined ) {
				data.interleavedBuffers = {};
			}
			if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {
				data.interleavedBuffers[ this.data.uuid ] = this.data.toJSON( data );
			}
			return {
				isInterleavedBufferAttribute: true,
				itemSize: this.itemSize,
				data: this.data.uuid,
				offset: this.offset,
				normalized: this.normalized
			};
		}
	}
} );
function SpriteMaterial( parameters ) {
	Material.call( this );
	this.type = 'SpriteMaterial';
	this.color = new Color( 0xffffff );
	this.map = null;
	this.alphaMap = null;
	this.rotation = 0;
	this.sizeAttenuation = true;
	this.transparent = true;
	this.setValues( parameters );
}
SpriteMaterial.prototype = Object.create( Material.prototype );
SpriteMaterial.prototype.constructor = SpriteMaterial;
SpriteMaterial.prototype.isSpriteMaterial = true;
SpriteMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.color.copy( source.color );
	this.map = source.map;
	this.alphaMap = source.alphaMap;
	this.rotation = source.rotation;
	this.sizeAttenuation = source.sizeAttenuation;
	return this;
};
let _geometry;
const _intersectPoint = new Vector3();
const _worldScale = new Vector3();
const _mvPosition = new Vector3();
const _alignedPosition = new Vector2();
const _rotatedPosition = new Vector2();
const _viewWorldMatrix = new Matrix4();
const _vA$1 = new Vector3();
const _vB$1 = new Vector3();
const _vC$1 = new Vector3();
const _uvA$1 = new Vector2();
const _uvB$1 = new Vector2();
const _uvC$1 = new Vector2();
function Sprite( material ) {
	Object3D.call( this );
	this.type = 'Sprite';
	if ( _geometry === undefined ) {
		_geometry = new BufferGeometry();
		const float32Array = new Float32Array( [
			- 0.5, - 0.5, 0, 0, 0,
			0.5, - 0.5, 0, 1, 0,
			0.5, 0.5, 0, 1, 1,
			- 0.5, 0.5, 0, 0, 1
		] );
		const interleavedBuffer = new InterleavedBuffer( float32Array, 5 );
		_geometry.setIndex( [ 0, 1, 2,	0, 2, 3 ] );
		_geometry.setAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );
		_geometry.setAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );
	}
	this.geometry = _geometry;
	this.material = ( material !== undefined ) ? material : new SpriteMaterial();
	this.center = new Vector2( 0.5, 0.5 );
}
Sprite.prototype = Object.assign( Object.create( Object3D.prototype ), {
	constructor: Sprite,
	isSprite: true,
	raycast: function ( raycaster, intersects ) {
		if ( raycaster.camera === null ) {
			console.error( 'THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.' );
		}
		_worldScale.setFromMatrixScale( this.matrixWorld );
		_viewWorldMatrix.copy( raycaster.camera.matrixWorld );
		this.modelViewMatrix.multiplyMatrices( raycaster.camera.matrixWorldInverse, this.matrixWorld );
		_mvPosition.setFromMatrixPosition( this.modelViewMatrix );
		if ( raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false ) {
			_worldScale.multiplyScalar( - _mvPosition.z );
		}
		const rotation = this.material.rotation;
		let sin, cos;
		if ( rotation !== 0 ) {
			cos = Math.cos( rotation );
			sin = Math.sin( rotation );
		}
		const center = this.center;
		transformVertex( _vA$1.set( - 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
		transformVertex( _vB$1.set( 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
		transformVertex( _vC$1.set( 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
		_uvA$1.set( 0, 0 );
		_uvB$1.set( 1, 0 );
		_uvC$1.set( 1, 1 );
		let intersect = raycaster.ray.intersectTriangle( _vA$1, _vB$1, _vC$1, false, _intersectPoint );
		if ( intersect === null ) {
			transformVertex( _vB$1.set( - 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
			_uvB$1.set( 0, 1 );
			intersect = raycaster.ray.intersectTriangle( _vA$1, _vC$1, _vB$1, false, _intersectPoint );
			if ( intersect === null ) {
				return;
			}
		}
		const distance = raycaster.ray.origin.distanceTo( _intersectPoint );
		if ( distance < raycaster.near || distance > raycaster.far ) return;
		intersects.push( {
			distance: distance,
			point: _intersectPoint.clone(),
			uv: Triangle.getUV( _intersectPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() ),
			face: null,
			object: this
		} );
	},
	copy: function ( source ) {
		Object3D.prototype.copy.call( this, source );
		if ( source.center !== undefined ) this.center.copy( source.center );
		this.material = source.material;
		return this;
	}
} );
function transformVertex( vertexPosition, mvPosition, center, scale, sin, cos ) {
	_alignedPosition.subVectors( vertexPosition, center ).addScalar( 0.5 ).multiply( scale );
	if ( sin !== undefined ) {
		_rotatedPosition.x = ( cos * _alignedPosition.x ) - ( sin * _alignedPosition.y );
		_rotatedPosition.y = ( sin * _alignedPosition.x ) + ( cos * _alignedPosition.y );
	} else {
		_rotatedPosition.copy( _alignedPosition );
	}
	vertexPosition.copy( mvPosition );
	vertexPosition.x += _rotatedPosition.x;
	vertexPosition.y += _rotatedPosition.y;
	vertexPosition.applyMatrix4( _viewWorldMatrix );
}
const _v1$4 = new Vector3();
const _v2$2 = new Vector3();
function LOD() {
	Object3D.call( this );
	this._currentLevel = 0;
	this.type = 'LOD';
	Object.defineProperties( this, {
		levels: {
			enumerable: true,
			value: []
		}
	} );
	this.autoUpdate = true;
}
LOD.prototype = Object.assign( Object.create( Object3D.prototype ), {
	constructor: LOD,
	isLOD: true,
	copy: function ( source ) {
		Object3D.prototype.copy.call( this, source, false );
		const levels = source.levels;
		for ( let i = 0, l = levels.length; i < l; i ++ ) {
			const level = levels[ i ];
			this.addLevel( level.object.clone(), level.distance );
		}
		this.autoUpdate = source.autoUpdate;
		return this;
	},
	addLevel: function ( object, distance ) {
		if ( distance === undefined ) distance = 0;
		distance = Math.abs( distance );
		const levels = this.levels;
		let l;
		for ( l = 0; l < levels.length; l ++ ) {
			if ( distance < levels[ l ].distance ) {
				break;
			}
		}
		levels.splice( l, 0, { distance: distance, object: object } );
		this.add( object );
		return this;
	},
	getCurrentLevel: function () {
		return this._currentLevel;
	},
	getObjectForDistance: function ( distance ) {
		const levels = this.levels;
		if ( levels.length > 0 ) {
			let i, l;
			for ( i = 1, l = levels.length; i < l; i ++ ) {
				if ( distance < levels[ i ].distance ) {
					break;
				}
			}
			return levels[ i - 1 ].object;
		}
		return null;
	},
	raycast: function ( raycaster, intersects ) {
		const levels = this.levels;
		if ( levels.length > 0 ) {
			_v1$4.setFromMatrixPosition( this.matrixWorld );
			const distance = raycaster.ray.origin.distanceTo( _v1$4 );
			this.getObjectForDistance( distance ).raycast( raycaster, intersects );
		}
	},
	update: function ( camera ) {
		const levels = this.levels;
		if ( levels.length > 1 ) {
			_v1$4.setFromMatrixPosition( camera.matrixWorld );
			_v2$2.setFromMatrixPosition( this.matrixWorld );
			const distance = _v1$4.distanceTo( _v2$2 ) / camera.zoom;
			levels[ 0 ].object.visible = true;
			let i, l;
			for ( i = 1, l = levels.length; i < l; i ++ ) {
				if ( distance >= levels[ i ].distance ) {
					levels[ i - 1 ].object.visible = false;
					levels[ i ].object.visible = true;
				} else {
					break;
				}
			}
			this._currentLevel = i - 1;
			for ( ; i < l; i ++ ) {
				levels[ i ].object.visible = false;
			}
		}
	},
	toJSON: function ( meta ) {
		const data = Object3D.prototype.toJSON.call( this, meta );
		if ( this.autoUpdate === false ) data.object.autoUpdate = false;
		data.object.levels = [];
		const levels = this.levels;
		for ( let i = 0, l = levels.length; i < l; i ++ ) {
			const level = levels[ i ];
			data.object.levels.push( {
				object: level.object.uuid,
				distance: level.distance
			} );
		}
		return data;
	}
} );
function SkinnedMesh( geometry, material ) {
	if ( geometry && geometry.isGeometry ) {
		console.error( 'THREE.SkinnedMesh no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );
	}
	Mesh.call( this, geometry, material );
	this.type = 'SkinnedMesh';
	this.bindMode = 'attached';
	this.bindMatrix = new Matrix4();
	this.bindMatrixInverse = new Matrix4();
}
SkinnedMesh.prototype = Object.assign( Object.create( Mesh.prototype ), {
	constructor: SkinnedMesh,
	isSkinnedMesh: true,
	copy: function ( source ) {
		Mesh.prototype.copy.call( this, source );
		this.bindMode = source.bindMode;
		this.bindMatrix.copy( source.bindMatrix );
		this.bindMatrixInverse.copy( source.bindMatrixInverse );
		this.skeleton = source.skeleton;
		return this;
	},
	bind: function ( skeleton, bindMatrix ) {
		this.skeleton = skeleton;
		if ( bindMatrix === undefined ) {
			this.updateMatrixWorld( true );
			this.skeleton.calculateInverses();
			bindMatrix = this.matrixWorld;
		}
		this.bindMatrix.copy( bindMatrix );
		this.bindMatrixInverse.getInverse( bindMatrix );
	},
	pose: function () {
		this.skeleton.pose();
	},
	normalizeSkinWeights: function () {
		const vector = new Vector4();
		const skinWeight = this.geometry.attributes.skinWeight;
		for ( let i = 0, l = skinWeight.count; i < l; i ++ ) {
			vector.x = skinWeight.getX( i );
			vector.y = skinWeight.getY( i );
			vector.z = skinWeight.getZ( i );
			vector.w = skinWeight.getW( i );
			const scale = 1.0 / vector.manhattanLength();
			if ( scale !== Infinity ) {
				vector.multiplyScalar( scale );
			} else {
				vector.set( 1, 0, 0, 0 );
			}
			skinWeight.setXYZW( i, vector.x, vector.y, vector.z, vector.w );
		}
	},
	updateMatrixWorld: function ( force ) {
		Mesh.prototype.updateMatrixWorld.call( this, force );
		if ( this.bindMode === 'attached' ) {
			this.bindMatrixInverse.getInverse( this.matrixWorld );
		} else if ( this.bindMode === 'detached' ) {
			this.bindMatrixInverse.getInverse( this.bindMatrix );
		} else {
			console.warn( 'THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode );
		}
	},
	boneTransform: ( function () {
		const basePosition = new Vector3();
		const skinIndex = new Vector4();
		const skinWeight = new Vector4();
		const vector = new Vector3();
		const matrix = new Matrix4();
		return function ( index, target ) {
			const skeleton = this.skeleton;
			const geometry = this.geometry;
			skinIndex.fromBufferAttribute( geometry.attributes.skinIndex, index );
			skinWeight.fromBufferAttribute( geometry.attributes.skinWeight, index );
			basePosition.fromBufferAttribute( geometry.attributes.position, index ).applyMatrix4( this.bindMatrix );
			target.set( 0, 0, 0 );
			for ( let i = 0; i < 4; i ++ ) {
				const weight = skinWeight.getComponent( i );
				if ( weight !== 0 ) {
					const boneIndex = skinIndex.getComponent( i );
					matrix.multiplyMatrices( skeleton.bones[ boneIndex ].matrixWorld, skeleton.boneInverses[ boneIndex ] );
					target.addScaledVector( vector.copy( basePosition ).applyMatrix4( matrix ), weight );
				}
			}
			return target.applyMatrix4( this.bindMatrixInverse );
		};
	}() )
} );
const _offsetMatrix = new Matrix4();
const _identityMatrix = new Matrix4();
function Skeleton( bones, boneInverses ) {
	bones = bones || [];
	this.bones = bones.slice( 0 );
	this.boneMatrices = new Float32Array( this.bones.length * 16 );
	this.frame = - 1;
	if ( boneInverses === undefined ) {
		this.calculateInverses();
	} else {
		if ( this.bones.length === boneInverses.length ) {
			this.boneInverses = boneInverses.slice( 0 );
		} else {
			console.warn( 'THREE.Skeleton boneInverses is the wrong length.' );
			this.boneInverses = [];
			for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
				this.boneInverses.push( new Matrix4() );
			}
		}
	}
}
Object.assign( Skeleton.prototype, {
	calculateInverses: function () {
		this.boneInverses = [];
		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
			const inverse = new Matrix4();
			if ( this.bones[ i ] ) {
				inverse.getInverse( this.bones[ i ].matrixWorld );
			}
			this.boneInverses.push( inverse );
		}
	},
	pose: function () {
		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
			const bone = this.bones[ i ];
			if ( bone ) {
				bone.matrixWorld.getInverse( this.boneInverses[ i ] );
			}
		}
		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
			const bone = this.bones[ i ];
			if ( bone ) {
				if ( bone.parent && bone.parent.isBone ) {
					bone.matrix.getInverse( bone.parent.matrixWorld );
					bone.matrix.multiply( bone.matrixWorld );
				} else {
					bone.matrix.copy( bone.matrixWorld );
				}
				bone.matrix.decompose( bone.position, bone.quaternion, bone.scale );
			}
		}
	},
	update: function () {
		const bones = this.bones;
		const boneInverses = this.boneInverses;
		const boneMatrices = this.boneMatrices;
		const boneTexture = this.boneTexture;
		for ( let i = 0, il = bones.length; i < il; i ++ ) {
			const matrix = bones[ i ] ? bones[ i ].matrixWorld : _identityMatrix;
			_offsetMatrix.multiplyMatrices( matrix, boneInverses[ i ] );
			_offsetMatrix.toArray( boneMatrices, i * 16 );
		}
		if ( boneTexture !== undefined ) {
			boneTexture.needsUpdate = true;
		}
	},
	clone: function () {
		return new Skeleton( this.bones, this.boneInverses );
	},
	getBoneByName: function ( name ) {
		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
			const bone = this.bones[ i ];
			if ( bone.name === name ) {
				return bone;
			}
		}
		return undefined;
	},
	dispose: function ( ) {
		if ( this.boneTexture ) {
			this.boneTexture.dispose();
			this.boneTexture = undefined;
		}
	}
} );
function Bone() {
	Object3D.call( this );
	this.type = 'Bone';
}
Bone.prototype = Object.assign( Object.create( Object3D.prototype ), {
	constructor: Bone,
	isBone: true
} );
const _instanceLocalMatrix = new Matrix4();
const _instanceWorldMatrix = new Matrix4();
const _instanceIntersects = [];
const _mesh = new Mesh();
function InstancedMesh( geometry, material, count ) {
	Mesh.call( this, geometry, material );
	this.instanceMatrix = new BufferAttribute( new Float32Array( count * 16 ), 16 );
	this.instanceColor = null;
	this.count = count;
	this.frustumCulled = false;
}
InstancedMesh.prototype = Object.assign( Object.create( Mesh.prototype ), {
	constructor: InstancedMesh,
	isInstancedMesh: true,
	copy: function ( source ) {
		Mesh.prototype.copy.call( this, source );
		this.instanceMatrix.copy( source.instanceMatrix );
		this.count = source.count;
		return this;
	},
	setColorAt: function ( index, color ) {
		if ( this.instanceColor === null ) {
			this.instanceColor = new BufferAttribute( new Float32Array( this.count * 3 ), 3 );
		}
		color.toArray( this.instanceColor.array, index * 3 );
	},
	getMatrixAt: function ( index, matrix ) {
		matrix.fromArray( this.instanceMatrix.array, index * 16 );
	},
	raycast: function ( raycaster, intersects ) {
		const matrixWorld = this.matrixWorld;
		const raycastTimes = this.count;
		_mesh.geometry = this.geometry;
		_mesh.material = this.material;
		if ( _mesh.material === undefined ) return;
		for ( let instanceId = 0; instanceId < raycastTimes; instanceId ++ ) {
			this.getMatrixAt( instanceId, _instanceLocalMatrix );
			_instanceWorldMatrix.multiplyMatrices( matrixWorld, _instanceLocalMatrix );
			_mesh.matrixWorld = _instanceWorldMatrix;
			_mesh.raycast( raycaster, _instanceIntersects );
			for ( let i = 0, l = _instanceIntersects.length; i < l; i ++ ) {
				const intersect = _instanceIntersects[ i ];
				intersect.instanceId = instanceId;
				intersect.object = this;
				intersects.push( intersect );
			}
			_instanceIntersects.length = 0;
		}
	},
	setMatrixAt: function ( index, matrix ) {
		matrix.toArray( this.instanceMatrix.array, index * 16 );
	},
	updateMorphTargets: function () {
	}
} );
function LineBasicMaterial( parameters ) {
	Material.call( this );
	this.type = 'LineBasicMaterial';
	this.color = new Color( 0xffffff );
	this.linewidth = 1;
	this.linecap = 'round';
	this.linejoin = 'round';
	this.morphTargets = false;
	this.setValues( parameters );
}
LineBasicMaterial.prototype = Object.create( Material.prototype );
LineBasicMaterial.prototype.constructor = LineBasicMaterial;
LineBasicMaterial.prototype.isLineBasicMaterial = true;
LineBasicMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.color.copy( source.color );
	this.linewidth = source.linewidth;
	this.linecap = source.linecap;
	this.linejoin = source.linejoin;
	this.morphTargets = source.morphTargets;
	return this;
};
const _start = new Vector3();
const _end = new Vector3();
const _inverseMatrix$1 = new Matrix4();
const _ray$1 = new Ray();
const _sphere$2 = new Sphere();
function Line( geometry, material, mode ) {
	if ( mode === 1 ) {
		console.error( 'THREE.Line: parameter THREE.LinePieces no longer supported. Use THREE.LineSegments instead.' );
	}
	Object3D.call( this );
	this.type = 'Line';
	this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
	this.material = material !== undefined ? material : new LineBasicMaterial();
	this.updateMorphTargets();
}
Line.prototype = Object.assign( Object.create( Object3D.prototype ), {
	constructor: Line,
	isLine: true,
	copy: function ( source ) {
		Object3D.prototype.copy.call( this, source );
		this.material = source.material;
		this.geometry = source.geometry;
		return this;
	},
	computeLineDistances: function () {
		const geometry = this.geometry;
		if ( geometry.isBufferGeometry ) {
			if ( geometry.index === null ) {
				const positionAttribute = geometry.attributes.position;
				const lineDistances = [ 0 ];
				for ( let i = 1, l = positionAttribute.count; i < l; i ++ ) {
					_start.fromBufferAttribute( positionAttribute, i - 1 );
					_end.fromBufferAttribute( positionAttribute, i );
					lineDistances[ i ] = lineDistances[ i - 1 ];
					lineDistances[ i ] += _start.distanceTo( _end );
				}
				geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );
			} else {
				console.warn( 'THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );
			}
		} else if ( geometry.isGeometry ) {
			const vertices = geometry.vertices;
			const lineDistances = geometry.lineDistances;
			lineDistances[ 0 ] = 0;
			for ( let i = 1, l = vertices.length; i < l; i ++ ) {
				lineDistances[ i ] = lineDistances[ i - 1 ];
				lineDistances[ i ] += vertices[ i - 1 ].distanceTo( vertices[ i ] );
			}
		}
		return this;
	},
	raycast: function ( raycaster, intersects ) {
		const geometry = this.geometry;
		const matrixWorld = this.matrixWorld;
		const threshold = raycaster.params.Line.threshold;
		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
		_sphere$2.copy( geometry.boundingSphere );
		_sphere$2.applyMatrix4( matrixWorld );
		_sphere$2.radius += threshold;
		if ( raycaster.ray.intersectsSphere( _sphere$2 ) === false ) return;
		_inverseMatrix$1.getInverse( matrixWorld );
		_ray$1.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$1 );
		const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
		const localThresholdSq = localThreshold * localThreshold;
		const vStart = new Vector3();
		const vEnd = new Vector3();
		const interSegment = new Vector3();
		const interRay = new Vector3();
		const step = ( this && this.isLineSegments ) ? 2 : 1;
		if ( geometry.isBufferGeometry ) {
			const index = geometry.index;
			const attributes = geometry.attributes;
			const positions = attributes.position.array;
			if ( index !== null ) {
				const indices = index.array;
				for ( let i = 0, l = indices.length - 1; i < l; i += step ) {
					const a = indices[ i ];
					const b = indices[ i + 1 ];
					vStart.fromArray( positions, a * 3 );
					vEnd.fromArray( positions, b * 3 );
					const distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );
					if ( distSq > localThresholdSq ) continue;
					interRay.applyMatrix4( this.matrixWorld );
					const distance = raycaster.ray.origin.distanceTo( interRay );
					if ( distance < raycaster.near || distance > raycaster.far ) continue;
					intersects.push( {
						distance: distance,
						point: interSegment.clone().applyMatrix4( this.matrixWorld ),
						index: i,
						face: null,
						faceIndex: null,
						object: this
					} );
				}
			} else {
				for ( let i = 0, l = positions.length / 3 - 1; i < l; i += step ) {
					vStart.fromArray( positions, 3 * i );
					vEnd.fromArray( positions, 3 * i + 3 );
					const distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );
					if ( distSq > localThresholdSq ) continue;
					interRay.applyMatrix4( this.matrixWorld );
					const distance = raycaster.ray.origin.distanceTo( interRay );
					if ( distance < raycaster.near || distance > raycaster.far ) continue;
					intersects.push( {
						distance: distance,
						point: interSegment.clone().applyMatrix4( this.matrixWorld ),
						index: i,
						face: null,
						faceIndex: null,
						object: this
					} );
				}
			}
		} else if ( geometry.isGeometry ) {
			const vertices = geometry.vertices;
			const nbVertices = vertices.length;
			for ( let i = 0; i < nbVertices - 1; i += step ) {
				const distSq = _ray$1.distanceSqToSegment( vertices[ i ], vertices[ i + 1 ], interRay, interSegment );
				if ( distSq > localThresholdSq ) continue;
				interRay.applyMatrix4( this.matrixWorld );
				const distance = raycaster.ray.origin.distanceTo( interRay );
				if ( distance < raycaster.near || distance > raycaster.far ) continue;
				intersects.push( {
					distance: distance,
					point: interSegment.clone().applyMatrix4( this.matrixWorld ),
					index: i,
					face: null,
					faceIndex: null,
					object: this
				} );
			}
		}
	},
	updateMorphTargets: function () {
		const geometry = this.geometry;
		if ( geometry.isBufferGeometry ) {
			const morphAttributes = geometry.morphAttributes;
			const keys = Object.keys( morphAttributes );
			if ( keys.length > 0 ) {
				const morphAttribute = morphAttributes[ keys[ 0 ] ];
				if ( morphAttribute !== undefined ) {
					this.morphTargetInfluences = [];
					this.morphTargetDictionary = {};
					for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {
						const name = morphAttribute[ m ].name || String( m );
						this.morphTargetInfluences.push( 0 );
						this.morphTargetDictionary[ name ] = m;
					}
				}
			}
		} else {
			const morphTargets = geometry.morphTargets;
			if ( morphTargets !== undefined && morphTargets.length > 0 ) {
				console.error( 'THREE.Line.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.' );
			}
		}
	}
} );
const _start$1 = new Vector3();
const _end$1 = new Vector3();
function LineSegments( geometry, material ) {
	Line.call( this, geometry, material );
	this.type = 'LineSegments';
}
LineSegments.prototype = Object.assign( Object.create( Line.prototype ), {
	constructor: LineSegments,
	isLineSegments: true,
	computeLineDistances: function () {
		const geometry = this.geometry;
		if ( geometry.isBufferGeometry ) {
			if ( geometry.index === null ) {
				const positionAttribute = geometry.attributes.position;
				const lineDistances = [];
				for ( let i = 0, l = positionAttribute.count; i < l; i += 2 ) {
					_start$1.fromBufferAttribute( positionAttribute, i );
					_end$1.fromBufferAttribute( positionAttribute, i + 1 );
					lineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];
					lineDistances[ i + 1 ] = lineDistances[ i ] + _start$1.distanceTo( _end$1 );
				}
				geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );
			} else {
				console.warn( 'THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );
			}
		} else if ( geometry.isGeometry ) {
			const vertices = geometry.vertices;
			const lineDistances = geometry.lineDistances;
			for ( let i = 0, l = vertices.length; i < l; i += 2 ) {
				_start$1.copy( vertices[ i ] );
				_end$1.copy( vertices[ i + 1 ] );
				lineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];
				lineDistances[ i + 1 ] = lineDistances[ i ] + _start$1.distanceTo( _end$1 );
			}
		}
		return this;
	}
} );
function LineLoop( geometry, material ) {
	Line.call( this, geometry, material );
	this.type = 'LineLoop';
}
LineLoop.prototype = Object.assign( Object.create( Line.prototype ), {
	constructor: LineLoop,
	isLineLoop: true,
} );
function PointsMaterial( parameters ) {
	Material.call( this );
	this.type = 'PointsMaterial';
	this.color = new Color( 0xffffff );
	this.map = null;
	this.alphaMap = null;
	this.size = 1;
	this.sizeAttenuation = true;
	this.morphTargets = false;
	this.setValues( parameters );
}
PointsMaterial.prototype = Object.create( Material.prototype );
PointsMaterial.prototype.constructor = PointsMaterial;
PointsMaterial.prototype.isPointsMaterial = true;
PointsMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.color.copy( source.color );
	this.map = source.map;
	this.alphaMap = source.alphaMap;
	this.size = source.size;
	this.sizeAttenuation = source.sizeAttenuation;
	this.morphTargets = source.morphTargets;
	return this;
};
const _inverseMatrix$2 = new Matrix4();
const _ray$2 = new Ray();
const _sphere$3 = new Sphere();
const _position$1 = new Vector3();
function Points( geometry, material ) {
	Object3D.call( this );
	this.type = 'Points';
	this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
	this.material = material !== undefined ? material : new PointsMaterial();
	this.updateMorphTargets();
}
Points.prototype = Object.assign( Object.create( Object3D.prototype ), {
	constructor: Points,
	isPoints: true,
	copy: function ( source ) {
		Object3D.prototype.copy.call( this, source );
		this.material = source.material;
		this.geometry = source.geometry;
		return this;
	},
	raycast: function ( raycaster, intersects ) {
		const geometry = this.geometry;
		const matrixWorld = this.matrixWorld;
		const threshold = raycaster.params.Points.threshold;
		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
		_sphere$3.copy( geometry.boundingSphere );
		_sphere$3.applyMatrix4( matrixWorld );
		_sphere$3.radius += threshold;
		if ( raycaster.ray.intersectsSphere( _sphere$3 ) === false ) return;
		_inverseMatrix$2.getInverse( matrixWorld );
		_ray$2.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$2 );
		const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
		const localThresholdSq = localThreshold * localThreshold;
		if ( geometry.isBufferGeometry ) {
			const index = geometry.index;
			const attributes = geometry.attributes;
			const positions = attributes.position.array;
			if ( index !== null ) {
				const indices = index.array;
				for ( let i = 0, il = indices.length; i < il; i ++ ) {
					const a = indices[ i ];
					_position$1.fromArray( positions, a * 3 );
					testPoint( _position$1, a, localThresholdSq, matrixWorld, raycaster, intersects, this );
				}
			} else {
				for ( let i = 0, l = positions.length / 3; i < l; i ++ ) {
					_position$1.fromArray( positions, i * 3 );
					testPoint( _position$1, i, localThresholdSq, matrixWorld, raycaster, intersects, this );
				}
			}
		} else {
			const vertices = geometry.vertices;
			for ( let i = 0, l = vertices.length; i < l; i ++ ) {
				testPoint( vertices[ i ], i, localThresholdSq, matrixWorld, raycaster, intersects, this );
			}
		}
	},
	updateMorphTargets: function () {
		const geometry = this.geometry;
		if ( geometry.isBufferGeometry ) {
			const morphAttributes = geometry.morphAttributes;
			const keys = Object.keys( morphAttributes );
			if ( keys.length > 0 ) {
				const morphAttribute = morphAttributes[ keys[ 0 ] ];
				if ( morphAttribute !== undefined ) {
					this.morphTargetInfluences = [];
					this.morphTargetDictionary = {};
					for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {
						const name = morphAttribute[ m ].name || String( m );
						this.morphTargetInfluences.push( 0 );
						this.morphTargetDictionary[ name ] = m;
					}
				}
			}
		} else {
			const morphTargets = geometry.morphTargets;
			if ( morphTargets !== undefined && morphTargets.length > 0 ) {
				console.error( 'THREE.Points.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.' );
			}
		}
	}
} );
function testPoint( point, index, localThresholdSq, matrixWorld, raycaster, intersects, object ) {
	const rayPointDistanceSq = _ray$2.distanceSqToPoint( point );
	if ( rayPointDistanceSq < localThresholdSq ) {
		const intersectPoint = new Vector3();
		_ray$2.closestPointToPoint( point, intersectPoint );
		intersectPoint.applyMatrix4( matrixWorld );
		const distance = raycaster.ray.origin.distanceTo( intersectPoint );
		if ( distance < raycaster.near || distance > raycaster.far ) return;
		intersects.push( {
			distance: distance,
			distanceToRay: Math.sqrt( rayPointDistanceSq ),
			point: intersectPoint,
			index: index,
			face: null,
			object: object
		} );
	}
}
function VideoTexture( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {
	Texture.call( this, video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
	this.format = format !== undefined ? format : RGBFormat;
	this.minFilter = minFilter !== undefined ? minFilter : LinearFilter;
	this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;
	this.generateMipmaps = false;
	const scope = this;
	function updateVideo() {
		scope.needsUpdate = true;
		video.requestVideoFrameCallback( updateVideo );
	}
	if ( 'requestVideoFrameCallback' in video ) {
		video.requestVideoFrameCallback( updateVideo );
	}
}
VideoTexture.prototype = Object.assign( Object.create( Texture.prototype ), {
	constructor: VideoTexture,
	isVideoTexture: true,
	update: function () {
		const video = this.image;
		const hasVideoFrameCallback = 'requestVideoFrameCallback' in video;
		if ( hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA ) {
			this.needsUpdate = true;
		}
	}
} );
function CompressedTexture( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {
	Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );
	this.image = { width: width, height: height };
	this.mipmaps = mipmaps;
	this.flipY = false;
	this.generateMipmaps = false;
}
CompressedTexture.prototype = Object.create( Texture.prototype );
CompressedTexture.prototype.constructor = CompressedTexture;
CompressedTexture.prototype.isCompressedTexture = true;
function CanvasTexture( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {
	Texture.call( this, canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
	this.needsUpdate = true;
}
CanvasTexture.prototype = Object.create( Texture.prototype );
CanvasTexture.prototype.constructor = CanvasTexture;
CanvasTexture.prototype.isCanvasTexture = true;
function DepthTexture( width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format ) {
	format = format !== undefined ? format : DepthFormat;
	if ( format !== DepthFormat && format !== DepthStencilFormat ) {
		throw new Error( 'DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat' );
	}
	if ( type === undefined && format === DepthFormat ) type = UnsignedShortType;
	if ( type === undefined && format === DepthStencilFormat ) type = UnsignedInt248Type;
	Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
	this.image = { width: width, height: height };
	this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
	this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
	this.flipY = false;
	this.generateMipmaps	= false;
}
DepthTexture.prototype = Object.create( Texture.prototype );
DepthTexture.prototype.constructor = DepthTexture;
DepthTexture.prototype.isDepthTexture = true;
class WireframeGeometry extends BufferGeometry {
	constructor( geometry ) {
		super();
		this.type = 'WireframeGeometry';
		const vertices = [];
		const edge = [ 0, 0 ], edges = {};
		const keys = [ 'a', 'b', 'c' ];
		if ( geometry && geometry.isGeometry ) {
			const faces = geometry.faces;
			for ( let i = 0, l = faces.length; i < l; i ++ ) {
				const face = faces[ i ];
				for ( let j = 0; j < 3; j ++ ) {
					const edge1 = face[ keys[ j ] ];
					const edge2 = face[ keys[ ( j + 1 ) % 3 ] ];
					edge[ 0 ] = Math.min( edge1, edge2 );
					edge[ 1 ] = Math.max( edge1, edge2 );
					const key = edge[ 0 ] + ',' + edge[ 1 ];
					if ( edges[ key ] === undefined ) {
						edges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ] };
					}
				}
			}
			for ( const key in edges ) {
				const e = edges[ key ];
				let vertex = geometry.vertices[ e.index1 ];
				vertices.push( vertex.x, vertex.y, vertex.z );
				vertex = geometry.vertices[ e.index2 ];
				vertices.push( vertex.x, vertex.y, vertex.z );
			}
		} else if ( geometry && geometry.isBufferGeometry ) {
			const vertex = new Vector3();
			if ( geometry.index !== null ) {
				const position = geometry.attributes.position;
				const indices = geometry.index;
				let groups = geometry.groups;
				if ( groups.length === 0 ) {
					groups = [ { start: 0, count: indices.count, materialIndex: 0 } ];
				}
				for ( let o = 0, ol = groups.length; o < ol; ++ o ) {
					const group = groups[ o ];
					const start = group.start;
					const count = group.count;
					for ( let i = start, l = ( start + count ); i < l; i += 3 ) {
						for ( let j = 0; j < 3; j ++ ) {
							const edge1 = indices.getX( i + j );
							const edge2 = indices.getX( i + ( j + 1 ) % 3 );
							edge[ 0 ] = Math.min( edge1, edge2 );
							edge[ 1 ] = Math.max( edge1, edge2 );
							const key = edge[ 0 ] + ',' + edge[ 1 ];
							if ( edges[ key ] === undefined ) {
								edges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ] };
							}
						}
					}
				}
				for ( const key in edges ) {
					const e = edges[ key ];
					vertex.fromBufferAttribute( position, e.index1 );
					vertices.push( vertex.x, vertex.y, vertex.z );
					vertex.fromBufferAttribute( position, e.index2 );
					vertices.push( vertex.x, vertex.y, vertex.z );
				}
			} else {
				const position = geometry.attributes.position;
				for ( let i = 0, l = ( position.count / 3 ); i < l; i ++ ) {
					for ( let j = 0; j < 3; j ++ ) {
						const index1 = 3 * i + j;
						vertex.fromBufferAttribute( position, index1 );
						vertices.push( vertex.x, vertex.y, vertex.z );
						const index2 = 3 * i + ( ( j + 1 ) % 3 );
						vertex.fromBufferAttribute( position, index2 );
						vertices.push( vertex.x, vertex.y, vertex.z );
					}
				}
			}
		}
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
	}
}
function ParametricGeometry( func, slices, stacks ) {
	Geometry.call( this );
	this.type = 'ParametricGeometry';
	this.parameters = {
		func: func,
		slices: slices,
		stacks: stacks
	};
	this.fromBufferGeometry( new ParametricBufferGeometry( func, slices, stacks ) );
	this.mergeVertices();
}
ParametricGeometry.prototype = Object.create( Geometry.prototype );
ParametricGeometry.prototype.constructor = ParametricGeometry;
function ParametricBufferGeometry( func, slices, stacks ) {
	BufferGeometry.call( this );
	this.type = 'ParametricBufferGeometry';
	this.parameters = {
		func: func,
		slices: slices,
		stacks: stacks
	};
	const indices = [];
	const vertices = [];
	const normals = [];
	const uvs = [];
	const EPS = 0.00001;
	const normal = new Vector3();
	const p0 = new Vector3(), p1 = new Vector3();
	const pu = new Vector3(), pv = new Vector3();
	if ( func.length < 3 ) {
		console.error( 'THREE.ParametricGeometry: Function must now modify a Vector3 as third parameter.' );
	}
	const sliceCount = slices + 1;
	for ( let i = 0; i <= stacks; i ++ ) {
		const v = i / stacks;
		for ( let j = 0; j <= slices; j ++ ) {
			const u = j / slices;
			func( u, v, p0 );
			vertices.push( p0.x, p0.y, p0.z );
			if ( u - EPS >= 0 ) {
				func( u - EPS, v, p1 );
				pu.subVectors( p0, p1 );
			} else {
				func( u + EPS, v, p1 );
				pu.subVectors( p1, p0 );
			}
			if ( v - EPS >= 0 ) {
				func( u, v - EPS, p1 );
				pv.subVectors( p0, p1 );
			} else {
				func( u, v + EPS, p1 );
				pv.subVectors( p1, p0 );
			}
			normal.crossVectors( pu, pv ).normalize();
			normals.push( normal.x, normal.y, normal.z );
			uvs.push( u, v );
		}
	}
	for ( let i = 0; i < stacks; i ++ ) {
		for ( let j = 0; j < slices; j ++ ) {
			const a = i * sliceCount + j;
			const b = i * sliceCount + j + 1;
			const c = ( i + 1 ) * sliceCount + j + 1;
			const d = ( i + 1 ) * sliceCount + j;
			indices.push( a, b, d );
			indices.push( b, c, d );
		}
	}
	this.setIndex( indices );
	this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
	this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
	this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
}
ParametricBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
ParametricBufferGeometry.prototype.constructor = ParametricBufferGeometry;
class PolyhedronGeometry extends Geometry {
	constructor( vertices, indices, radius, detail ) {
		super();
		this.type = 'PolyhedronGeometry';
		this.parameters = {
			vertices: vertices,
			indices: indices,
			radius: radius,
			detail: detail
		};
		this.fromBufferGeometry( new PolyhedronBufferGeometry( vertices, indices, radius, detail ) );
		this.mergeVertices();
	}
}
class PolyhedronBufferGeometry extends BufferGeometry {
	constructor( vertices, indices, radius, detail ) {
		super();
		this.type = 'PolyhedronBufferGeometry';
		this.parameters = {
			vertices: vertices,
			indices: indices,
			radius: radius,
			detail: detail
		};
		radius = radius || 1;
		detail = detail || 0;
		const vertexBuffer = [];
		const uvBuffer = [];
		subdivide( detail );
		applyRadius( radius );
		generateUVs();
		this.setAttribute( 'position', new Float32BufferAttribute( vertexBuffer, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( vertexBuffer.slice(), 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvBuffer, 2 ) );
		if ( detail === 0 ) {
			this.computeVertexNormals();
		} else {
			this.normalizeNormals();
		}
		function subdivide( detail ) {
			const a = new Vector3();
			const b = new Vector3();
			const c = new Vector3();
			for ( let i = 0; i < indices.length; i += 3 ) {
				getVertexByIndex( indices[ i + 0 ], a );
				getVertexByIndex( indices[ i + 1 ], b );
				getVertexByIndex( indices[ i + 2 ], c );
				subdivideFace( a, b, c, detail );
			}
		}
		function subdivideFace( a, b, c, detail ) {
			const cols = Math.pow( 2, detail );
			const v = [];
			for ( let i = 0; i <= cols; i ++ ) {
				v[ i ] = [];
				const aj = a.clone().lerp( c, i / cols );
				const bj = b.clone().lerp( c, i / cols );
				const rows = cols - i;
				for ( let j = 0; j <= rows; j ++ ) {
					if ( j === 0 && i === cols ) {
						v[ i ][ j ] = aj;
					} else {
						v[ i ][ j ] = aj.clone().lerp( bj, j / rows );
					}
				}
			}
			for ( let i = 0; i < cols; i ++ ) {
				for ( let j = 0; j < 2 * ( cols - i ) - 1; j ++ ) {
					const k = Math.floor( j / 2 );
					if ( j % 2 === 0 ) {
						pushVertex( v[ i ][ k + 1 ] );
						pushVertex( v[ i + 1 ][ k ] );
						pushVertex( v[ i ][ k ] );
					} else {
						pushVertex( v[ i ][ k + 1 ] );
						pushVertex( v[ i + 1 ][ k + 1 ] );
						pushVertex( v[ i + 1 ][ k ] );
					}
				}
			}
		}
		function applyRadius( radius ) {
			const vertex = new Vector3();
			for ( let i = 0; i < vertexBuffer.length; i += 3 ) {
				vertex.x = vertexBuffer[ i + 0 ];
				vertex.y = vertexBuffer[ i + 1 ];
				vertex.z = vertexBuffer[ i + 2 ];
				vertex.normalize().multiplyScalar( radius );
				vertexBuffer[ i + 0 ] = vertex.x;
				vertexBuffer[ i + 1 ] = vertex.y;
				vertexBuffer[ i + 2 ] = vertex.z;
			}
		}
		function generateUVs() {
			const vertex = new Vector3();
			for ( let i = 0; i < vertexBuffer.length; i += 3 ) {
				vertex.x = vertexBuffer[ i + 0 ];
				vertex.y = vertexBuffer[ i + 1 ];
				vertex.z = vertexBuffer[ i + 2 ];
				const u = azimuth( vertex ) / 2 / Math.PI + 0.5;
				const v = inclination( vertex ) / Math.PI + 0.5;
				uvBuffer.push( u, 1 - v );
			}
			correctUVs();
			correctSeam();
		}
		function correctSeam() {
			for ( let i = 0; i < uvBuffer.length; i += 6 ) {
				const x0 = uvBuffer[ i + 0 ];
				const x1 = uvBuffer[ i + 2 ];
				const x2 = uvBuffer[ i + 4 ];
				const max = Math.max( x0, x1, x2 );
				const min = Math.min( x0, x1, x2 );
				if ( max > 0.9 && min < 0.1 ) {
					if ( x0 < 0.2 ) uvBuffer[ i + 0 ] += 1;
					if ( x1 < 0.2 ) uvBuffer[ i + 2 ] += 1;
					if ( x2 < 0.2 ) uvBuffer[ i + 4 ] += 1;
				}
			}
		}
		function pushVertex( vertex ) {
			vertexBuffer.push( vertex.x, vertex.y, vertex.z );
		}
		function getVertexByIndex( index, vertex ) {
			const stride = index * 3;
			vertex.x = vertices[ stride + 0 ];
			vertex.y = vertices[ stride + 1 ];
			vertex.z = vertices[ stride + 2 ];
		}
		function correctUVs() {
			const a = new Vector3();
			const b = new Vector3();
			const c = new Vector3();
			const centroid = new Vector3();
			const uvA = new Vector2();
			const uvB = new Vector2();
			const uvC = new Vector2();
			for ( let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6 ) {
				a.set( vertexBuffer[ i + 0 ], vertexBuffer[ i + 1 ], vertexBuffer[ i + 2 ] );
				b.set( vertexBuffer[ i + 3 ], vertexBuffer[ i + 4 ], vertexBuffer[ i + 5 ] );
				c.set( vertexBuffer[ i + 6 ], vertexBuffer[ i + 7 ], vertexBuffer[ i + 8 ] );
				uvA.set( uvBuffer[ j + 0 ], uvBuffer[ j + 1 ] );
				uvB.set( uvBuffer[ j + 2 ], uvBuffer[ j + 3 ] );
				uvC.set( uvBuffer[ j + 4 ], uvBuffer[ j + 5 ] );
				centroid.copy( a ).add( b ).add( c ).divideScalar( 3 );
				const azi = azimuth( centroid );
				correctUV( uvA, j + 0, a, azi );
				correctUV( uvB, j + 2, b, azi );
				correctUV( uvC, j + 4, c, azi );
			}
		}
		function correctUV( uv, stride, vector, azimuth ) {
			if ( ( azimuth < 0 ) && ( uv.x === 1 ) ) {
				uvBuffer[ stride ] = uv.x - 1;
			}
			if ( ( vector.x === 0 ) && ( vector.z === 0 ) ) {
				uvBuffer[ stride ] = azimuth / 2 / Math.PI + 0.5;
			}
		}
		function azimuth( vector ) {
			return Math.atan2( vector.z, - vector.x );
		}
		function inclination( vector ) {
			return Math.atan2( - vector.y, Math.sqrt( ( vector.x * vector.x ) + ( vector.z * vector.z ) ) );
		}
	}
}
class TetrahedronGeometry extends Geometry {
	constructor( radius, detail ) {
		super();
		this.type = 'TetrahedronGeometry';
		this.parameters = {
			radius: radius,
			detail: detail
		};
		this.fromBufferGeometry( new TetrahedronBufferGeometry( radius, detail ) );
		this.mergeVertices();
	}
}
class TetrahedronBufferGeometry extends PolyhedronBufferGeometry {
	constructor( radius, detail ) {
		const vertices = [
			1, 1, 1, 	- 1, - 1, 1, 	- 1, 1, - 1, 	1, - 1, - 1
		];
		const indices = [
			2, 1, 0, 	0, 3, 2,	1, 3, 0,	2, 3, 1
		];
		super( vertices, indices, radius, detail );
		this.type = 'TetrahedronBufferGeometry';
		this.parameters = {
			radius: radius,
			detail: detail
		};
	}
}
class OctahedronGeometry extends Geometry {
	constructor( radius, detail ) {
		super();
		this.type = 'OctahedronGeometry';
		this.parameters = {
			radius: radius,
			detail: detail
		};
		this.fromBufferGeometry( new OctahedronBufferGeometry( radius, detail ) );
		this.mergeVertices();
	}
}
class OctahedronBufferGeometry extends PolyhedronBufferGeometry {
	constructor( radius, detail ) {
		const vertices = [
			1, 0, 0, 	- 1, 0, 0,	0, 1, 0,
			0, - 1, 0, 	0, 0, 1,	0, 0, - 1
		];
		const indices = [
			0, 2, 4,	0, 4, 3,	0, 3, 5,
			0, 5, 2,	1, 2, 5,	1, 5, 3,
			1, 3, 4,	1, 4, 2
		];
		super( vertices, indices, radius, detail );
		this.type = 'OctahedronBufferGeometry';
		this.parameters = {
			radius: radius,
			detail: detail
		};
	}
}
class IcosahedronGeometry extends Geometry {
	constructor( radius, detail ) {
		super();
		this.type = 'IcosahedronGeometry';
		this.parameters = {
			radius: radius,
			detail: detail
		};
		this.fromBufferGeometry( new IcosahedronBufferGeometry( radius, detail ) );
		this.mergeVertices();
	}
}
class IcosahedronBufferGeometry extends PolyhedronBufferGeometry {
	constructor( radius, detail ) {
		const t = ( 1 + Math.sqrt( 5 ) ) / 2;
		const vertices = [
			- 1, t, 0, 	1, t, 0, 	- 1, - t, 0, 	1, - t, 0,
			0, - 1, t, 	0, 1, t,	0, - 1, - t, 	0, 1, - t,
			t, 0, - 1, 	t, 0, 1, 	- t, 0, - 1, 	- t, 0, 1
		];
		const indices = [
			0, 11, 5, 	0, 5, 1, 	0, 1, 7, 	0, 7, 10, 	0, 10, 11,
			1, 5, 9, 	5, 11, 4,	11, 10, 2,	10, 7, 6,	7, 1, 8,
			3, 9, 4, 	3, 4, 2,	3, 2, 6,	3, 6, 8,	3, 8, 9,
			4, 9, 5, 	2, 4, 11,	6, 2, 10,	8, 6, 7,	9, 8, 1
		];
		super( vertices, indices, radius, detail );
		this.type = 'IcosahedronBufferGeometry';
		this.parameters = {
			radius: radius,
			detail: detail
		};
	}
}
class DodecahedronGeometry extends Geometry {
	constructor( radius, detail ) {
		super();
		this.type = 'DodecahedronGeometry';
		this.parameters = {
			radius: radius,
			detail: detail
		};
		this.fromBufferGeometry( new DodecahedronBufferGeometry( radius, detail ) );
		this.mergeVertices();
	}
}
class DodecahedronBufferGeometry extends PolyhedronBufferGeometry {
	constructor( radius, detail ) {
		const t = ( 1 + Math.sqrt( 5 ) ) / 2;
		const r = 1 / t;
		const vertices = [
			- 1, - 1, - 1,	- 1, - 1, 1,
			- 1, 1, - 1, - 1, 1, 1,
			1, - 1, - 1, 1, - 1, 1,
			1, 1, - 1, 1, 1, 1,
			0, - r, - t, 0, - r, t,
			0, r, - t, 0, r, t,
			- r, - t, 0, - r, t, 0,
			r, - t, 0, r, t, 0,
			- t, 0, - r, t, 0, - r,
			- t, 0, r, t, 0, r
		];
		const indices = [
			3, 11, 7, 	3, 7, 15, 	3, 15, 13,
			7, 19, 17, 	7, 17, 6, 	7, 6, 15,
			17, 4, 8, 	17, 8, 10, 	17, 10, 6,
			8, 0, 16, 	8, 16, 2, 	8, 2, 10,
			0, 12, 1, 	0, 1, 18, 	0, 18, 16,
			6, 10, 2, 	6, 2, 13, 	6, 13, 15,
			2, 16, 18, 	2, 18, 3, 	2, 3, 13,
			18, 1, 9, 	18, 9, 11, 	18, 11, 3,
			4, 14, 12, 	4, 12, 0, 	4, 0, 8,
			11, 9, 5, 	11, 5, 19, 	11, 19, 7,
			19, 5, 14, 	19, 14, 4, 	19, 4, 17,
			1, 12, 14, 	1, 14, 5, 	1, 5, 9
		];
		super( vertices, indices, radius, detail );
		this.type = 'DodecahedronBufferGeometry';
		this.parameters = {
			radius: radius,
			detail: detail
		};
	}
}
class TubeGeometry extends Geometry {
	constructor( path, tubularSegments, radius, radialSegments, closed, taper ) {
		super();
		this.type = 'TubeGeometry';
		this.parameters = {
			path: path,
			tubularSegments: tubularSegments,
			radius: radius,
			radialSegments: radialSegments,
			closed: closed
		};
		if ( taper !== undefined ) console.warn( 'THREE.TubeGeometry: taper has been removed.' );
		const bufferGeometry = new TubeBufferGeometry( path, tubularSegments, radius, radialSegments, closed );
		this.tangents = bufferGeometry.tangents;
		this.normals = bufferGeometry.normals;
		this.binormals = bufferGeometry.binormals;
		this.fromBufferGeometry( bufferGeometry );
		this.mergeVertices();
	}
}
class TubeBufferGeometry extends BufferGeometry {
	constructor( path, tubularSegments, radius, radialSegments, closed ) {
		super();
		this.type = 'TubeBufferGeometry';
		this.parameters = {
			path: path,
			tubularSegments: tubularSegments,
			radius: radius,
			radialSegments: radialSegments,
			closed: closed
		};
		tubularSegments = tubularSegments || 64;
		radius = radius || 1;
		radialSegments = radialSegments || 8;
		closed = closed || false;
		const frames = path.computeFrenetFrames( tubularSegments, closed );
		this.tangents = frames.tangents;
		this.normals = frames.normals;
		this.binormals = frames.binormals;
		const vertex = new Vector3();
		const normal = new Vector3();
		const uv = new Vector2();
		let P = new Vector3();
		const vertices = [];
		const normals = [];
		const uvs = [];
		const indices = [];
		generateBufferData();
		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
		function generateBufferData() {
			for ( let i = 0; i < tubularSegments; i ++ ) {
				generateSegment( i );
			}
			generateSegment( ( closed === false ) ? tubularSegments : 0 );
			generateUVs();
			generateIndices();
		}
		function generateSegment( i ) {
			P = path.getPointAt( i / tubularSegments, P );
			const N = frames.normals[ i ];
			const B = frames.binormals[ i ];
			for ( let j = 0; j <= radialSegments; j ++ ) {
				const v = j / radialSegments * Math.PI * 2;
				const sin = Math.sin( v );
				const cos = - Math.cos( v );
				normal.x = ( cos * N.x + sin * B.x );
				normal.y = ( cos * N.y + sin * B.y );
				normal.z = ( cos * N.z + sin * B.z );
				normal.normalize();
				normals.push( normal.x, normal.y, normal.z );
				vertex.x = P.x + radius * normal.x;
				vertex.y = P.y + radius * normal.y;
				vertex.z = P.z + radius * normal.z;
				vertices.push( vertex.x, vertex.y, vertex.z );
			}
		}
		function generateIndices() {
			for ( let j = 1; j <= tubularSegments; j ++ ) {
				for ( let i = 1; i <= radialSegments; i ++ ) {
					const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
					const b = ( radialSegments + 1 ) * j + ( i - 1 );
					const c = ( radialSegments + 1 ) * j + i;
					const d = ( radialSegments + 1 ) * ( j - 1 ) + i;
					indices.push( a, b, d );
					indices.push( b, c, d );
				}
			}
		}
		function generateUVs() {
			for ( let i = 0; i <= tubularSegments; i ++ ) {
				for ( let j = 0; j <= radialSegments; j ++ ) {
					uv.x = i / tubularSegments;
					uv.y = j / radialSegments;
					uvs.push( uv.x, uv.y );
				}
			}
		}
	}
	toJSON() {
		const data = BufferGeometry.prototype.toJSON.call( this );
		data.path = this.parameters.path.toJSON();
		return data;
	}
}
class TorusKnotGeometry extends Geometry {
	constructor( radius, tube, tubularSegments, radialSegments, p, q, heightScale ) {
		super();
		this.type = 'TorusKnotGeometry';
		this.parameters = {
			radius: radius,
			tube: tube,
			tubularSegments: tubularSegments,
			radialSegments: radialSegments,
			p: p,
			q: q
		};
		if ( heightScale !== undefined ) console.warn( 'THREE.TorusKnotGeometry: heightScale has been deprecated. Use .scale( x, y, z ) instead.' );
		this.fromBufferGeometry( new TorusKnotBufferGeometry( radius, tube, tubularSegments, radialSegments, p, q ) );
		this.mergeVertices();
	}
}
class TorusKnotBufferGeometry extends BufferGeometry {
	constructor( radius, tube, tubularSegments, radialSegments, p, q ) {
		super();
		this.type = 'TorusKnotBufferGeometry';
		this.parameters = {
			radius: radius,
			tube: tube,
			tubularSegments: tubularSegments,
			radialSegments: radialSegments,
			p: p,
			q: q
		};
		radius = radius || 1;
		tube = tube || 0.4;
		tubularSegments = Math.floor( tubularSegments ) || 64;
		radialSegments = Math.floor( radialSegments ) || 8;
		p = p || 2;
		q = q || 3;
		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];
		const vertex = new Vector3();
		const normal = new Vector3();
		const P1 = new Vector3();
		const P2 = new Vector3();
		const B = new Vector3();
		const T = new Vector3();
		const N = new Vector3();
		for ( let i = 0; i <= tubularSegments; ++ i ) {
			const u = i / tubularSegments * p * Math.PI * 2;
			calculatePositionOnCurve( u, p, q, radius, P1 );
			calculatePositionOnCurve( u + 0.01, p, q, radius, P2 );
			T.subVectors( P2, P1 );
			N.addVectors( P2, P1 );
			B.crossVectors( T, N );
			N.crossVectors( B, T );
			B.normalize();
			N.normalize();
			for ( let j = 0; j <= radialSegments; ++ j ) {
				const v = j / radialSegments * Math.PI * 2;
				const cx = - tube * Math.cos( v );
				const cy = tube * Math.sin( v );
				vertex.x = P1.x + ( cx * N.x + cy * B.x );
				vertex.y = P1.y + ( cx * N.y + cy * B.y );
				vertex.z = P1.z + ( cx * N.z + cy * B.z );
				vertices.push( vertex.x, vertex.y, vertex.z );
				normal.subVectors( vertex, P1 ).normalize();
				normals.push( normal.x, normal.y, normal.z );
				uvs.push( i / tubularSegments );
				uvs.push( j / radialSegments );
			}
		}
		for ( let j = 1; j <= tubularSegments; j ++ ) {
			for ( let i = 1; i <= radialSegments; i ++ ) {
				const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
				const b = ( radialSegments + 1 ) * j + ( i - 1 );
				const c = ( radialSegments + 1 ) * j + i;
				const d = ( radialSegments + 1 ) * ( j - 1 ) + i;
				indices.push( a, b, d );
				indices.push( b, c, d );
			}
		}
		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
		function calculatePositionOnCurve( u, p, q, radius, position ) {
			const cu = Math.cos( u );
			const su = Math.sin( u );
			const quOverP = q / p * u;
			const cs = Math.cos( quOverP );
			position.x = radius * ( 2 + cs ) * 0.5 * cu;
			position.y = radius * ( 2 + cs ) * su * 0.5;
			position.z = radius * Math.sin( quOverP ) * 0.5;
		}
	}
}
class TorusGeometry extends Geometry {
	constructor( radius, tube, radialSegments, tubularSegments, arc ) {
		super();
		this.type = 'TorusGeometry';
		this.parameters = {
			radius: radius,
			tube: tube,
			radialSegments: radialSegments,
			tubularSegments: tubularSegments,
			arc: arc
		};
		this.fromBufferGeometry( new TorusBufferGeometry( radius, tube, radialSegments, tubularSegments, arc ) );
		this.mergeVertices();
	}
}
class TorusBufferGeometry extends BufferGeometry {
	constructor( radius, tube, radialSegments, tubularSegments, arc ) {
		super();
		this.type = 'TorusBufferGeometry';
		this.parameters = {
			radius: radius,
			tube: tube,
			radialSegments: radialSegments,
			tubularSegments: tubularSegments,
			arc: arc
		};
		radius = radius || 1;
		tube = tube || 0.4;
		radialSegments = Math.floor( radialSegments ) || 8;
		tubularSegments = Math.floor( tubularSegments ) || 6;
		arc = arc || Math.PI * 2;
		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];
		const center = new Vector3();
		const vertex = new Vector3();
		const normal = new Vector3();
		for ( let j = 0; j <= radialSegments; j ++ ) {
			for ( let i = 0; i <= tubularSegments; i ++ ) {
				const u = i / tubularSegments * arc;
				const v = j / radialSegments * Math.PI * 2;
				vertex.x = ( radius + tube * Math.cos( v ) ) * Math.cos( u );
				vertex.y = ( radius + tube * Math.cos( v ) ) * Math.sin( u );
				vertex.z = tube * Math.sin( v );
				vertices.push( vertex.x, vertex.y, vertex.z );
				center.x = radius * Math.cos( u );
				center.y = radius * Math.sin( u );
				normal.subVectors( vertex, center ).normalize();
				normals.push( normal.x, normal.y, normal.z );
				uvs.push( i / tubularSegments );
				uvs.push( j / radialSegments );
			}
		}
		for ( let j = 1; j <= radialSegments; j ++ ) {
			for ( let i = 1; i <= tubularSegments; i ++ ) {
				const a = ( tubularSegments + 1 ) * j + i - 1;
				const b = ( tubularSegments + 1 ) * ( j - 1 ) + i - 1;
				const c = ( tubularSegments + 1 ) * ( j - 1 ) + i;
				const d = ( tubularSegments + 1 ) * j + i;
				indices.push( a, b, d );
				indices.push( b, c, d );
			}
		}
		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
	}
}
const Earcut = {
	triangulate: function ( data, holeIndices, dim ) {
		dim = dim || 2;
		const hasHoles = holeIndices && holeIndices.length;
		const outerLen = hasHoles ? holeIndices[ 0 ] * dim : data.length;
		let outerNode = linkedList( data, 0, outerLen, dim, true );
		const triangles = [];
		if ( ! outerNode || outerNode.next === outerNode.prev ) return triangles;
		let minX, minY, maxX, maxY, x, y, invSize;
		if ( hasHoles ) outerNode = eliminateHoles( data, holeIndices, outerNode, dim );
		if ( data.length > 80 * dim ) {
			minX = maxX = data[ 0 ];
			minY = maxY = data[ 1 ];
			for ( let i = dim; i < outerLen; i += dim ) {
				x = data[ i ];
				y = data[ i + 1 ];
				if ( x < minX ) minX = x;
				if ( y < minY ) minY = y;
				if ( x > maxX ) maxX = x;
				if ( y > maxY ) maxY = y;
			}
			invSize = Math.max( maxX - minX, maxY - minY );
			invSize = invSize !== 0 ? 1 / invSize : 0;
		}
		earcutLinked( outerNode, triangles, dim, minX, minY, invSize );
		return triangles;
	}
};
function linkedList( data, start, end, dim, clockwise ) {
	let i, last;
	if ( clockwise === ( signedArea( data, start, end, dim ) > 0 ) ) {
		for ( i = start; i < end; i += dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );
	} else {
		for ( i = end - dim; i >= start; i -= dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );
	}
	if ( last && equals( last, last.next ) ) {
		removeNode( last );
		last = last.next;
	}
	return last;
}
function filterPoints( start, end ) {
	if ( ! start ) return start;
	if ( ! end ) end = start;
	let p = start,
		again;
	do {
		again = false;
		if ( ! p.steiner && ( equals( p, p.next ) || area( p.prev, p, p.next ) === 0 ) ) {
			removeNode( p );
			p = end = p.prev;
			if ( p === p.next ) break;
			again = true;
		} else {
			p = p.next;
		}
	} while ( again || p !== end );
	return end;
}
function earcutLinked( ear, triangles, dim, minX, minY, invSize, pass ) {
	if ( ! ear ) return;
	if ( ! pass && invSize ) indexCurve( ear, minX, minY, invSize );
	let stop = ear,
		prev, next;
	while ( ear.prev !== ear.next ) {
		prev = ear.prev;
		next = ear.next;
		if ( invSize ? isEarHashed( ear, minX, minY, invSize ) : isEar( ear ) ) {
			triangles.push( prev.i / dim );
			triangles.push( ear.i / dim );
			triangles.push( next.i / dim );
			removeNode( ear );
			ear = next.next;
			stop = next.next;
			continue;
		}
		ear = next;
		if ( ear === stop ) {
			if ( ! pass ) {
				earcutLinked( filterPoints( ear ), triangles, dim, minX, minY, invSize, 1 );
			} else if ( pass === 1 ) {
				ear = cureLocalIntersections( filterPoints( ear ), triangles, dim );
				earcutLinked( ear, triangles, dim, minX, minY, invSize, 2 );
			} else if ( pass === 2 ) {
				splitEarcut( ear, triangles, dim, minX, minY, invSize );
			}
			break;
		}
	}
}
function isEar( ear ) {
	const a = ear.prev,
		b = ear,
		c = ear.next;
	if ( area( a, b, c ) >= 0 ) return false;
	let p = ear.next.next;
	while ( p !== ear.prev ) {
		if ( pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
			area( p.prev, p, p.next ) >= 0 ) return false;
		p = p.next;
	}
	return true;
}
function isEarHashed( ear, minX, minY, invSize ) {
	const a = ear.prev,
		b = ear,
		c = ear.next;
	if ( area( a, b, c ) >= 0 ) return false;
	const minTX = a.x < b.x ? ( a.x < c.x ? a.x : c.x ) : ( b.x < c.x ? b.x : c.x ),
		minTY = a.y < b.y ? ( a.y < c.y ? a.y : c.y ) : ( b.y < c.y ? b.y : c.y ),
		maxTX = a.x > b.x ? ( a.x > c.x ? a.x : c.x ) : ( b.x > c.x ? b.x : c.x ),
		maxTY = a.y > b.y ? ( a.y > c.y ? a.y : c.y ) : ( b.y > c.y ? b.y : c.y );
	const minZ = zOrder( minTX, minTY, minX, minY, invSize ),
		maxZ = zOrder( maxTX, maxTY, minX, minY, invSize );
	let p = ear.prevZ,
		n = ear.nextZ;
	while ( p && p.z >= minZ && n && n.z <= maxZ ) {
		if ( p !== ear.prev && p !== ear.next &&
			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
			area( p.prev, p, p.next ) >= 0 ) return false;
		p = p.prevZ;
		if ( n !== ear.prev && n !== ear.next &&
			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&
			area( n.prev, n, n.next ) >= 0 ) return false;
		n = n.nextZ;
	}
	while ( p && p.z >= minZ ) {
		if ( p !== ear.prev && p !== ear.next &&
			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
			area( p.prev, p, p.next ) >= 0 ) return false;
		p = p.prevZ;
	}
	while ( n && n.z <= maxZ ) {
		if ( n !== ear.prev && n !== ear.next &&
			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&
			area( n.prev, n, n.next ) >= 0 ) return false;
		n = n.nextZ;
	}
	return true;
}
function cureLocalIntersections( start, triangles, dim ) {
	let p = start;
	do {
		const a = p.prev,
			b = p.next.next;
		if ( ! equals( a, b ) && intersects( a, p, p.next, b ) && locallyInside( a, b ) && locallyInside( b, a ) ) {
			triangles.push( a.i / dim );
			triangles.push( p.i / dim );
			triangles.push( b.i / dim );
			removeNode( p );
			removeNode( p.next );
			p = start = b;
		}
		p = p.next;
	} while ( p !== start );
	return filterPoints( p );
}
function splitEarcut( start, triangles, dim, minX, minY, invSize ) {
	let a = start;
	do {
		let b = a.next.next;
		while ( b !== a.prev ) {
			if ( a.i !== b.i && isValidDiagonal( a, b ) ) {
				let c = splitPolygon( a, b );
				a = filterPoints( a, a.next );
				c = filterPoints( c, c.next );
				earcutLinked( a, triangles, dim, minX, minY, invSize );
				earcutLinked( c, triangles, dim, minX, minY, invSize );
				return;
			}
			b = b.next;
		}
		a = a.next;
	} while ( a !== start );
}
function eliminateHoles( data, holeIndices, outerNode, dim ) {
	const queue = [];
	let i, len, start, end, list;
	for ( i = 0, len = holeIndices.length; i < len; i ++ ) {
		start = holeIndices[ i ] * dim;
		end = i < len - 1 ? holeIndices[ i + 1 ] * dim : data.length;
		list = linkedList( data, start, end, dim, false );
		if ( list === list.next ) list.steiner = true;
		queue.push( getLeftmost( list ) );
	}
	queue.sort( compareX );
	for ( i = 0; i < queue.length; i ++ ) {
		eliminateHole( queue[ i ], outerNode );
		outerNode = filterPoints( outerNode, outerNode.next );
	}
	return outerNode;
}
function compareX( a, b ) {
	return a.x - b.x;
}
function eliminateHole( hole, outerNode ) {
	outerNode = findHoleBridge( hole, outerNode );
	if ( outerNode ) {
		const b = splitPolygon( outerNode, hole );
		filterPoints( outerNode, outerNode.next );
		filterPoints( b, b.next );
	}
}
function findHoleBridge( hole, outerNode ) {
	let p = outerNode;
	const hx = hole.x;
	const hy = hole.y;
	let qx = - Infinity, m;
	do {
		if ( hy <= p.y && hy >= p.next.y && p.next.y !== p.y ) {
			const x = p.x + ( hy - p.y ) * ( p.next.x - p.x ) / ( p.next.y - p.y );
			if ( x <= hx && x > qx ) {
				qx = x;
				if ( x === hx ) {
					if ( hy === p.y ) return p;
					if ( hy === p.next.y ) return p.next;
				}
				m = p.x < p.next.x ? p : p.next;
			}
		}
		p = p.next;
	} while ( p !== outerNode );
	if ( ! m ) return null;
	if ( hx === qx ) return m;
	const stop = m,
		mx = m.x,
		my = m.y;
	let tanMin = Infinity, tan;
	p = m;
	do {
		if ( hx >= p.x && p.x >= mx && hx !== p.x &&
				pointInTriangle( hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y ) ) {
			tan = Math.abs( hy - p.y ) / ( hx - p.x );
			if ( locallyInside( p, hole ) && ( tan < tanMin || ( tan === tanMin && ( p.x > m.x || ( p.x === m.x && sectorContainsSector( m, p ) ) ) ) ) ) {
				m = p;
				tanMin = tan;
			}
		}
		p = p.next;
	} while ( p !== stop );
	return m;
}
function sectorContainsSector( m, p ) {
	return area( m.prev, m, p.prev ) < 0 && area( p.next, m, m.next ) < 0;
}
function indexCurve( start, minX, minY, invSize ) {
	let p = start;
	do {
		if ( p.z === null ) p.z = zOrder( p.x, p.y, minX, minY, invSize );
		p.prevZ = p.prev;
		p.nextZ = p.next;
		p = p.next;
	} while ( p !== start );
	p.prevZ.nextZ = null;
	p.prevZ = null;
	sortLinked( p );
}
function sortLinked( list ) {
	let i, p, q, e, tail, numMerges, pSize, qSize,
		inSize = 1;
	do {
		p = list;
		list = null;
		tail = null;
		numMerges = 0;
		while ( p ) {
			numMerges ++;
			q = p;
			pSize = 0;
			for ( i = 0; i < inSize; i ++ ) {
				pSize ++;
				q = q.nextZ;
				if ( ! q ) break;
			}
			qSize = inSize;
			while ( pSize > 0 || ( qSize > 0 && q ) ) {
				if ( pSize !== 0 && ( qSize === 0 || ! q || p.z <= q.z ) ) {
					e = p;
					p = p.nextZ;
					pSize --;
				} else {
					e = q;
					q = q.nextZ;
					qSize --;
				}
				if ( tail ) tail.nextZ = e;
				else list = e;
				e.prevZ = tail;
				tail = e;
			}
			p = q;
		}
		tail.nextZ = null;
		inSize *= 2;
	} while ( numMerges > 1 );
	return list;
}
function zOrder( x, y, minX, minY, invSize ) {
	x = 32767 * ( x - minX ) * invSize;
	y = 32767 * ( y - minY ) * invSize;
	x = ( x | ( x << 8 ) ) & 0x00FF00FF;
	x = ( x | ( x << 4 ) ) & 0x0F0F0F0F;
	x = ( x | ( x << 2 ) ) & 0x33333333;
	x = ( x | ( x << 1 ) ) & 0x55555555;
	y = ( y | ( y << 8 ) ) & 0x00FF00FF;
	y = ( y | ( y << 4 ) ) & 0x0F0F0F0F;
	y = ( y | ( y << 2 ) ) & 0x33333333;
	y = ( y | ( y << 1 ) ) & 0x55555555;
	return x | ( y << 1 );
}
function getLeftmost( start ) {
	let p = start,
		leftmost = start;
	do {
		if ( p.x < leftmost.x || ( p.x === leftmost.x && p.y < leftmost.y ) ) leftmost = p;
		p = p.next;
	} while ( p !== start );
	return leftmost;
}
function pointInTriangle( ax, ay, bx, by, cx, cy, px, py ) {
	return ( cx - px ) * ( ay - py ) - ( ax - px ) * ( cy - py ) >= 0 &&
			( ax - px ) * ( by - py ) - ( bx - px ) * ( ay - py ) >= 0 &&
			( bx - px ) * ( cy - py ) - ( cx - px ) * ( by - py ) >= 0;
}
function isValidDiagonal( a, b ) {
	return a.next.i !== b.i && a.prev.i !== b.i && ! intersectsPolygon( a, b ) &&
		( locallyInside( a, b ) && locallyInside( b, a ) && middleInside( a, b ) &&
		( area( a.prev, a, b.prev ) || area( a, b.prev, b ) ) ||
		equals( a, b ) && area( a.prev, a, a.next ) > 0 && area( b.prev, b, b.next ) > 0 );
}
function area( p, q, r ) {
	return ( q.y - p.y ) * ( r.x - q.x ) - ( q.x - p.x ) * ( r.y - q.y );
}
function equals( p1, p2 ) {
	return p1.x === p2.x && p1.y === p2.y;
}
function intersects( p1, q1, p2, q2 ) {
	const o1 = sign( area( p1, q1, p2 ) );
	const o2 = sign( area( p1, q1, q2 ) );
	const o3 = sign( area( p2, q2, p1 ) );
	const o4 = sign( area( p2, q2, q1 ) );
	if ( o1 !== o2 && o3 !== o4 ) return true;
	if ( o1 === 0 && onSegment( p1, p2, q1 ) ) return true;
	if ( o2 === 0 && onSegment( p1, q2, q1 ) ) return true;
	if ( o3 === 0 && onSegment( p2, p1, q2 ) ) return true;
	if ( o4 === 0 && onSegment( p2, q1, q2 ) ) return true;
	return false;
}
function onSegment( p, q, r ) {
	return q.x <= Math.max( p.x, r.x ) && q.x >= Math.min( p.x, r.x ) && q.y <= Math.max( p.y, r.y ) && q.y >= Math.min( p.y, r.y );
}
function sign( num ) {
	return num > 0 ? 1 : num < 0 ? - 1 : 0;
}
function intersectsPolygon( a, b ) {
	let p = a;
	do {
		if ( p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&
				intersects( p, p.next, a, b ) ) return true;
		p = p.next;
	} while ( p !== a );
	return false;
}
function locallyInside( a, b ) {
	return area( a.prev, a, a.next ) < 0 ?
		area( a, b, a.next ) >= 0 && area( a, a.prev, b ) >= 0 :
		area( a, b, a.prev ) < 0 || area( a, a.next, b ) < 0;
}
function middleInside( a, b ) {
	let p = a,
		inside = false;
	const px = ( a.x + b.x ) / 2,
		py = ( a.y + b.y ) / 2;
	do {
		if ( ( ( p.y > py ) !== ( p.next.y > py ) ) && p.next.y !== p.y &&
				( px < ( p.next.x - p.x ) * ( py - p.y ) / ( p.next.y - p.y ) + p.x ) )
			inside = ! inside;
		p = p.next;
	} while ( p !== a );
	return inside;
}
function splitPolygon( a, b ) {
	const a2 = new Node( a.i, a.x, a.y ),
		b2 = new Node( b.i, b.x, b.y ),
		an = a.next,
		bp = b.prev;
	a.next = b;
	b.prev = a;
	a2.next = an;
	an.prev = a2;
	b2.next = a2;
	a2.prev = b2;
	bp.next = b2;
	b2.prev = bp;
	return b2;
}
function insertNode( i, x, y, last ) {
	const p = new Node( i, x, y );
	if ( ! last ) {
		p.prev = p;
		p.next = p;
	} else {
		p.next = last.next;
		p.prev = last;
		last.next.prev = p;
		last.next = p;
	}
	return p;
}
function removeNode( p ) {
	p.next.prev = p.prev;
	p.prev.next = p.next;
	if ( p.prevZ ) p.prevZ.nextZ = p.nextZ;
	if ( p.nextZ ) p.nextZ.prevZ = p.prevZ;
}
function Node( i, x, y ) {
	this.i = i;
	this.x = x;
	this.y = y;
	this.prev = null;
	this.next = null;
	this.z = null;
	this.prevZ = null;
	this.nextZ = null;
	this.steiner = false;
}
function signedArea( data, start, end, dim ) {
	let sum = 0;
	for ( let i = start, j = end - dim; i < end; i += dim ) {
		sum += ( data[ j ] - data[ i ] ) * ( data[ i + 1 ] + data[ j + 1 ] );
		j = i;
	}
	return sum;
}
const ShapeUtils = {
	area: function ( contour ) {
		const n = contour.length;
		let a = 0.0;
		for ( let p = n - 1, q = 0; q < n; p = q ++ ) {
			a += contour[ p ].x * contour[ q ].y - contour[ q ].x * contour[ p ].y;
		}
		return a * 0.5;
	},
	isClockWise: function ( pts ) {
		return ShapeUtils.area( pts ) < 0;
	},
	triangulateShape: function ( contour, holes ) {
		const vertices = [];
		const holeIndices = [];
		const faces = [];
		removeDupEndPts( contour );
		addContour( vertices, contour );
		let holeIndex = contour.length;
		holes.forEach( removeDupEndPts );
		for ( let i = 0; i < holes.length; i ++ ) {
			holeIndices.push( holeIndex );
			holeIndex += holes[ i ].length;
			addContour( vertices, holes[ i ] );
		}
		const triangles = Earcut.triangulate( vertices, holeIndices );
		for ( let i = 0; i < triangles.length; i += 3 ) {
			faces.push( triangles.slice( i, i + 3 ) );
		}
		return faces;
	}
};
function removeDupEndPts( points ) {
	const l = points.length;
	if ( l > 2 && points[ l - 1 ].equals( points[ 0 ] ) ) {
		points.pop();
	}
}
function addContour( vertices, contour ) {
	for ( let i = 0; i < contour.length; i ++ ) {
		vertices.push( contour[ i ].x );
		vertices.push( contour[ i ].y );
	}
}
class ExtrudeGeometry extends Geometry {
	constructor( shapes, options ) {
		super();
		this.type = 'ExtrudeGeometry';
		this.parameters = {
			shapes: shapes,
			options: options
		};
		this.fromBufferGeometry( new ExtrudeBufferGeometry( shapes, options ) );
		this.mergeVertices();
	}
	toJSON() {
		const data = super.toJSON();
		const shapes = this.parameters.shapes;
		const options = this.parameters.options;
		return toJSON( shapes, options, data );
	}
}
class ExtrudeBufferGeometry extends BufferGeometry {
	constructor( shapes, options ) {
		super();
		this.type = 'ExtrudeBufferGeometry';
		this.parameters = {
			shapes: shapes,
			options: options
		};
		shapes = Array.isArray( shapes ) ? shapes : [ shapes ];
		const scope = this;
		const verticesArray = [];
		const uvArray = [];
		for ( let i = 0, l = shapes.length; i < l; i ++ ) {
			const shape = shapes[ i ];
			addShape( shape );
		}
		this.setAttribute( 'position', new Float32BufferAttribute( verticesArray, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvArray, 2 ) );
		this.computeVertexNormals();
		function addShape( shape ) {
			const placeholder = [];
			const curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;
			const steps = options.steps !== undefined ? options.steps : 1;
			let depth = options.depth !== undefined ? options.depth : 100;
			let bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;
			let bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 6;
			let bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 2;
			let bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;
			let bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;
			const extrudePath = options.extrudePath;
			const uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator;
			if ( options.amount !== undefined ) {
				console.warn( 'THREE.ExtrudeBufferGeometry: amount has been renamed to depth.' );
				depth = options.amount;
			}
			let extrudePts, extrudeByPath = false;
			let splineTube, binormal, normal, position2;
			if ( extrudePath ) {
				extrudePts = extrudePath.getSpacedPoints( steps );
				extrudeByPath = true;
				bevelEnabled = false;
				splineTube = extrudePath.computeFrenetFrames( steps, false );
				binormal = new Vector3();
				normal = new Vector3();
				position2 = new Vector3();
			}
			if ( ! bevelEnabled ) {
				bevelSegments = 0;
				bevelThickness = 0;
				bevelSize = 0;
				bevelOffset = 0;
			}
			const shapePoints = shape.extractPoints( curveSegments );
			let vertices = shapePoints.shape;
			const holes = shapePoints.holes;
			const reverse = ! ShapeUtils.isClockWise( vertices );
			if ( reverse ) {
				vertices = vertices.reverse();
				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
					const ahole = holes[ h ];
					if ( ShapeUtils.isClockWise( ahole ) ) {
						holes[ h ] = ahole.reverse();
					}
				}
			}
			const faces = ShapeUtils.triangulateShape( vertices, holes );
			const contour = vertices;
			for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
				const ahole = holes[ h ];
				vertices = vertices.concat( ahole );
			}
			function scalePt2( pt, vec, size ) {
				if ( ! vec ) console.error( "THREE.ExtrudeGeometry: vec does not exist" );
				return vec.clone().multiplyScalar( size ).add( pt );
			}
			const vlen = vertices.length, flen = faces.length;
			function getBevelVec( inPt, inPrev, inNext ) {
				let v_trans_x, v_trans_y, shrink_by;
				const v_prev_x = inPt.x - inPrev.x,
					v_prev_y = inPt.y - inPrev.y;
				const v_next_x = inNext.x - inPt.x,
					v_next_y = inNext.y - inPt.y;
				const v_prev_lensq = ( v_prev_x * v_prev_x + v_prev_y * v_prev_y );
				const collinear0 = ( v_prev_x * v_next_y - v_prev_y * v_next_x );
				if ( Math.abs( collinear0 ) > Number.EPSILON ) {
					const v_prev_len = Math.sqrt( v_prev_lensq );
					const v_next_len = Math.sqrt( v_next_x * v_next_x + v_next_y * v_next_y );
					const ptPrevShift_x = ( inPrev.x - v_prev_y / v_prev_len );
					const ptPrevShift_y = ( inPrev.y + v_prev_x / v_prev_len );
					const ptNextShift_x = ( inNext.x - v_next_y / v_next_len );
					const ptNextShift_y = ( inNext.y + v_next_x / v_next_len );
					const sf = ( ( ptNextShift_x - ptPrevShift_x ) * v_next_y -
							( ptNextShift_y - ptPrevShift_y ) * v_next_x ) /
						( v_prev_x * v_next_y - v_prev_y * v_next_x );
					v_trans_x = ( ptPrevShift_x + v_prev_x * sf - inPt.x );
					v_trans_y = ( ptPrevShift_y + v_prev_y * sf - inPt.y );
					const v_trans_lensq = ( v_trans_x * v_trans_x + v_trans_y * v_trans_y );
					if ( v_trans_lensq <= 2 ) {
						return new Vector2( v_trans_x, v_trans_y );
					} else {
						shrink_by = Math.sqrt( v_trans_lensq / 2 );
					}
				} else {
					let direction_eq = false;
					if ( v_prev_x > Number.EPSILON ) {
						if ( v_next_x > Number.EPSILON ) {
							direction_eq = true;
						}
					} else {
						if ( v_prev_x < - Number.EPSILON ) {
							if ( v_next_x < - Number.EPSILON ) {
								direction_eq = true;
							}
						} else {
							if ( Math.sign( v_prev_y ) === Math.sign( v_next_y ) ) {
								direction_eq = true;
							}
						}
					}
					if ( direction_eq ) {
						v_trans_x = - v_prev_y;
						v_trans_y = v_prev_x;
						shrink_by = Math.sqrt( v_prev_lensq );
					} else {
						v_trans_x = v_prev_x;
						v_trans_y = v_prev_y;
						shrink_by = Math.sqrt( v_prev_lensq / 2 );
					}
				}
				return new Vector2( v_trans_x / shrink_by, v_trans_y / shrink_by );
			}
			const contourMovements = [];
			for ( let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {
				if ( j === il ) j = 0;
				if ( k === il ) k = 0;
				contourMovements[ i ] = getBevelVec( contour[ i ], contour[ j ], contour[ k ] );
			}
			const holesMovements = [];
			let oneHoleMovements, verticesMovements = contourMovements.concat();
			for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
				const ahole = holes[ h ];
				oneHoleMovements = [];
				for ( let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {
					if ( j === il ) j = 0;
					if ( k === il ) k = 0;
					oneHoleMovements[ i ] = getBevelVec( ahole[ i ], ahole[ j ], ahole[ k ] );
				}
				holesMovements.push( oneHoleMovements );
				verticesMovements = verticesMovements.concat( oneHoleMovements );
			}
			for ( let b = 0; b < bevelSegments; b ++ ) {
				const t = b / bevelSegments;
				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;
				for ( let i = 0, il = contour.length; i < il; i ++ ) {
					const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );
					v( vert.x, vert.y, - z );
				}
				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
					const ahole = holes[ h ];
					oneHoleMovements = holesMovements[ h ];
					for ( let i = 0, il = ahole.length; i < il; i ++ ) {
						const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );
						v( vert.x, vert.y, - z );
					}
				}
			}
			const bs = bevelSize + bevelOffset;
			for ( let i = 0; i < vlen; i ++ ) {
				const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];
				if ( ! extrudeByPath ) {
					v( vert.x, vert.y, 0 );
				} else {
					normal.copy( splineTube.normals[ 0 ] ).multiplyScalar( vert.x );
					binormal.copy( splineTube.binormals[ 0 ] ).multiplyScalar( vert.y );
					position2.copy( extrudePts[ 0 ] ).add( normal ).add( binormal );
					v( position2.x, position2.y, position2.z );
				}
			}
			for ( let s = 1; s <= steps; s ++ ) {
				for ( let i = 0; i < vlen; i ++ ) {
					const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];
					if ( ! extrudeByPath ) {
						v( vert.x, vert.y, depth / steps * s );
					} else {
						normal.copy( splineTube.normals[ s ] ).multiplyScalar( vert.x );
						binormal.copy( splineTube.binormals[ s ] ).multiplyScalar( vert.y );
						position2.copy( extrudePts[ s ] ).add( normal ).add( binormal );
						v( position2.x, position2.y, position2.z );
					}
				}
			}
			for ( let b = bevelSegments - 1; b >= 0; b -- ) {
				const t = b / bevelSegments;
				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;
				for ( let i = 0, il = contour.length; i < il; i ++ ) {
					const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );
					v( vert.x, vert.y, depth + z );
				}
				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
					const ahole = holes[ h ];
					oneHoleMovements = holesMovements[ h ];
					for ( let i = 0, il = ahole.length; i < il; i ++ ) {
						const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );
						if ( ! extrudeByPath ) {
							v( vert.x, vert.y, depth + z );
						} else {
							v( vert.x, vert.y + extrudePts[ steps - 1 ].y, extrudePts[ steps - 1 ].x + z );
						}
					}
				}
			}
			buildLidFaces();
			buildSideFaces();
			function buildLidFaces() {
				const start = verticesArray.length / 3;
				if ( bevelEnabled ) {
					let layer = 0;
					let offset = vlen * layer;
					for ( let i = 0; i < flen; i ++ ) {
						const face = faces[ i ];
						f3( face[ 2 ] + offset, face[ 1 ] + offset, face[ 0 ] + offset );
					}
					layer = steps + bevelSegments * 2;
					offset = vlen * layer;
					for ( let i = 0; i < flen; i ++ ) {
						const face = faces[ i ];
						f3( face[ 0 ] + offset, face[ 1 ] + offset, face[ 2 ] + offset );
					}
				} else {
					for ( let i = 0; i < flen; i ++ ) {
						const face = faces[ i ];
						f3( face[ 2 ], face[ 1 ], face[ 0 ] );
					}
					for ( let i = 0; i < flen; i ++ ) {
						const face = faces[ i ];
						f3( face[ 0 ] + vlen * steps, face[ 1 ] + vlen * steps, face[ 2 ] + vlen * steps );
					}
				}
				scope.addGroup( start, verticesArray.length / 3 - start, 0 );
			}
			function buildSideFaces() {
				const start = verticesArray.length / 3;
				let layeroffset = 0;
				sidewalls( contour, layeroffset );
				layeroffset += contour.length;
				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
					const ahole = holes[ h ];
					sidewalls( ahole, layeroffset );
					layeroffset += ahole.length;
				}
				scope.addGroup( start, verticesArray.length / 3 - start, 1 );
			}
			function sidewalls( contour, layeroffset ) {
				let i = contour.length;
				while ( -- i >= 0 ) {
					const j = i;
					let k = i - 1;
					if ( k < 0 ) k = contour.length - 1;
					for ( let s = 0, sl = ( steps + bevelSegments * 2 ); s < sl; s ++ ) {
						const slen1 = vlen * s;
						const slen2 = vlen * ( s + 1 );
						const a = layeroffset + j + slen1,
							b = layeroffset + k + slen1,
							c = layeroffset + k + slen2,
							d = layeroffset + j + slen2;
						f4( a, b, c, d );
					}
				}
			}
			function v( x, y, z ) {
				placeholder.push( x );
				placeholder.push( y );
				placeholder.push( z );
			}
			function f3( a, b, c ) {
				addVertex( a );
				addVertex( b );
				addVertex( c );
				const nextIndex = verticesArray.length / 3;
				const uvs = uvgen.generateTopUV( scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1 );
				addUV( uvs[ 0 ] );
				addUV( uvs[ 1 ] );
				addUV( uvs[ 2 ] );
			}
			function f4( a, b, c, d ) {
				addVertex( a );
				addVertex( b );
				addVertex( d );
				addVertex( b );
				addVertex( c );
				addVertex( d );
				const nextIndex = verticesArray.length / 3;
				const uvs = uvgen.generateSideWallUV( scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1 );
				addUV( uvs[ 0 ] );
				addUV( uvs[ 1 ] );
				addUV( uvs[ 3 ] );
				addUV( uvs[ 1 ] );
				addUV( uvs[ 2 ] );
				addUV( uvs[ 3 ] );
			}
			function addVertex( index ) {
				verticesArray.push( placeholder[ index * 3 + 0 ] );
				verticesArray.push( placeholder[ index * 3 + 1 ] );
				verticesArray.push( placeholder[ index * 3 + 2 ] );
			}
			function addUV( vector2 ) {
				uvArray.push( vector2.x );
				uvArray.push( vector2.y );
			}
		}
	}
	toJSON() {
		const data = BufferGeometry.prototype.toJSON.call( this );
		const shapes = this.parameters.shapes;
		const options = this.parameters.options;
		return toJSON( shapes, options, data );
	}
}
const WorldUVGenerator = {
	generateTopUV: function ( geometry, vertices, indexA, indexB, indexC ) {
		const a_x = vertices[ indexA * 3 ];
		const a_y = vertices[ indexA * 3 + 1 ];
		const b_x = vertices[ indexB * 3 ];
		const b_y = vertices[ indexB * 3 + 1 ];
		const c_x = vertices[ indexC * 3 ];
		const c_y = vertices[ indexC * 3 + 1 ];
		return [
			new Vector2( a_x, a_y ),
			new Vector2( b_x, b_y ),
			new Vector2( c_x, c_y )
		];
	},
	generateSideWallUV: function ( geometry, vertices, indexA, indexB, indexC, indexD ) {
		const a_x = vertices[ indexA * 3 ];
		const a_y = vertices[ indexA * 3 + 1 ];
		const a_z = vertices[ indexA * 3 + 2 ];
		const b_x = vertices[ indexB * 3 ];
		const b_y = vertices[ indexB * 3 + 1 ];
		const b_z = vertices[ indexB * 3 + 2 ];
		const c_x = vertices[ indexC * 3 ];
		const c_y = vertices[ indexC * 3 + 1 ];
		const c_z = vertices[ indexC * 3 + 2 ];
		const d_x = vertices[ indexD * 3 ];
		const d_y = vertices[ indexD * 3 + 1 ];
		const d_z = vertices[ indexD * 3 + 2 ];
		if ( Math.abs( a_y - b_y ) < 0.01 ) {
			return [
				new Vector2( a_x, 1 - a_z ),
				new Vector2( b_x, 1 - b_z ),
				new Vector2( c_x, 1 - c_z ),
				new Vector2( d_x, 1 - d_z )
			];
		} else {
			return [
				new Vector2( a_y, 1 - a_z ),
				new Vector2( b_y, 1 - b_z ),
				new Vector2( c_y, 1 - c_z ),
				new Vector2( d_y, 1 - d_z )
			];
		}
	}
};
function toJSON( shapes, options, data ) {
	data.shapes = [];
	if ( Array.isArray( shapes ) ) {
		for ( let i = 0, l = shapes.length; i < l; i ++ ) {
			const shape = shapes[ i ];
			data.shapes.push( shape.uuid );
		}
	} else {
		data.shapes.push( shapes.uuid );
	}
	if ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();
	return data;
}
class TextGeometry extends Geometry {
	constructor( text, parameters ) {
		super();
		this.type = 'TextGeometry';
		this.parameters = {
			text: text,
			parameters: parameters
		};
		this.fromBufferGeometry( new TextBufferGeometry( text, parameters ) );
		this.mergeVertices();
	}
}
class TextBufferGeometry extends ExtrudeBufferGeometry {
	constructor( text, parameters ) {
		parameters = parameters || {};
		const font = parameters.font;
		if ( ! ( font && font.isFont ) ) {
			console.error( 'THREE.TextGeometry: font parameter is not an instance of THREE.Font.' );
			return new Geometry();
		}
		const shapes = font.generateShapes( text, parameters.size );
		parameters.depth = parameters.height !== undefined ? parameters.height : 50;
		if ( parameters.bevelThickness === undefined ) parameters.bevelThickness = 10;
		if ( parameters.bevelSize === undefined ) parameters.bevelSize = 8;
		if ( parameters.bevelEnabled === undefined ) parameters.bevelEnabled = false;
		super( shapes, parameters );
		this.type = 'TextBufferGeometry';
	}
}
class SphereGeometry extends Geometry {
	constructor( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {
		super();
		this.type = 'SphereGeometry';
		this.parameters = {
			radius: radius,
			widthSegments: widthSegments,
			heightSegments: heightSegments,
			phiStart: phiStart,
			phiLength: phiLength,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};
		this.fromBufferGeometry( new SphereBufferGeometry( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) );
		this.mergeVertices();
	}
}
class SphereBufferGeometry extends BufferGeometry {
	constructor( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {
		super();
		this.type = 'SphereBufferGeometry';
		this.parameters = {
			radius: radius,
			widthSegments: widthSegments,
			heightSegments: heightSegments,
			phiStart: phiStart,
			phiLength: phiLength,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};
		radius = radius || 1;
		widthSegments = Math.max( 3, Math.floor( widthSegments ) || 8 );
		heightSegments = Math.max( 2, Math.floor( heightSegments ) || 6 );
		phiStart = phiStart !== undefined ? phiStart : 0;
		phiLength = phiLength !== undefined ? phiLength : Math.PI * 2;
		thetaStart = thetaStart !== undefined ? thetaStart : 0;
		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI;
		const thetaEnd = Math.min( thetaStart + thetaLength, Math.PI );
		let index = 0;
		const grid = [];
		const vertex = new Vector3();
		const normal = new Vector3();
		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];
		for ( let iy = 0; iy <= heightSegments; iy ++ ) {
			const verticesRow = [];
			const v = iy / heightSegments;
			let uOffset = 0;
			if ( iy == 0 && thetaStart == 0 ) {
				uOffset = 0.5 / widthSegments;
			} else if ( iy == heightSegments && thetaEnd == Math.PI ) {
				uOffset = - 0.5 / widthSegments;
			}
			for ( let ix = 0; ix <= widthSegments; ix ++ ) {
				const u = ix / widthSegments;
				vertex.x = - radius * Math.cos( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );
				vertex.y = radius * Math.cos( thetaStart + v * thetaLength );
				vertex.z = radius * Math.sin( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );
				vertices.push( vertex.x, vertex.y, vertex.z );
				normal.copy( vertex ).normalize();
				normals.push( normal.x, normal.y, normal.z );
				uvs.push( u + uOffset, 1 - v );
				verticesRow.push( index ++ );
			}
			grid.push( verticesRow );
		}
		for ( let iy = 0; iy < heightSegments; iy ++ ) {
			for ( let ix = 0; ix < widthSegments; ix ++ ) {
				const a = grid[ iy ][ ix + 1 ];
				const b = grid[ iy ][ ix ];
				const c = grid[ iy + 1 ][ ix ];
				const d = grid[ iy + 1 ][ ix + 1 ];
				if ( iy !== 0 || thetaStart > 0 ) indices.push( a, b, d );
				if ( iy !== heightSegments - 1 || thetaEnd < Math.PI ) indices.push( b, c, d );
			}
		}
		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
	}
}
class RingGeometry extends Geometry {
	constructor( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) {
		super();
		this.type = 'RingGeometry';
		this.parameters = {
			innerRadius: innerRadius,
			outerRadius: outerRadius,
			thetaSegments: thetaSegments,
			phiSegments: phiSegments,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};
		this.fromBufferGeometry( new RingBufferGeometry( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) );
		this.mergeVertices();
	}
}
class RingBufferGeometry extends BufferGeometry {
	constructor( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) {
		super();
		this.type = 'RingBufferGeometry';
		this.parameters = {
			innerRadius: innerRadius,
			outerRadius: outerRadius,
			thetaSegments: thetaSegments,
			phiSegments: phiSegments,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};
		innerRadius = innerRadius || 0.5;
		outerRadius = outerRadius || 1;
		thetaStart = thetaStart !== undefined ? thetaStart : 0;
		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI * 2;
		thetaSegments = thetaSegments !== undefined ? Math.max( 3, thetaSegments ) : 8;
		phiSegments = phiSegments !== undefined ? Math.max( 1, phiSegments ) : 1;
		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];
		let radius = innerRadius;
		const radiusStep = ( ( outerRadius - innerRadius ) / phiSegments );
		const vertex = new Vector3();
		const uv = new Vector2();
		for ( let j = 0; j <= phiSegments; j ++ ) {
			for ( let i = 0; i <= thetaSegments; i ++ ) {
				const segment = thetaStart + i / thetaSegments * thetaLength;
				vertex.x = radius * Math.cos( segment );
				vertex.y = radius * Math.sin( segment );
				vertices.push( vertex.x, vertex.y, vertex.z );
				normals.push( 0, 0, 1 );
				uv.x = ( vertex.x / outerRadius + 1 ) / 2;
				uv.y = ( vertex.y / outerRadius + 1 ) / 2;
				uvs.push( uv.x, uv.y );
			}
			radius += radiusStep;
		}
		for ( let j = 0; j < phiSegments; j ++ ) {
			const thetaSegmentLevel = j * ( thetaSegments + 1 );
			for ( let i = 0; i < thetaSegments; i ++ ) {
				const segment = i + thetaSegmentLevel;
				const a = segment;
				const b = segment + thetaSegments + 1;
				const c = segment + thetaSegments + 2;
				const d = segment + 1;
				indices.push( a, b, d );
				indices.push( b, c, d );
			}
		}
		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
	}
}
class LatheGeometry extends Geometry {
	constructor( points, segments, phiStart, phiLength ) {
		super();
		this.type = 'LatheGeometry';
		this.parameters = {
			points: points,
			segments: segments,
			phiStart: phiStart,
			phiLength: phiLength
		};
		this.fromBufferGeometry( new LatheBufferGeometry( points, segments, phiStart, phiLength ) );
		this.mergeVertices();
	}
}
class LatheBufferGeometry extends BufferGeometry {
	constructor( points, segments, phiStart, phiLength ) {
		super();
		this.type = 'LatheBufferGeometry';
		this.parameters = {
			points: points,
			segments: segments,
			phiStart: phiStart,
			phiLength: phiLength
		};
		segments = Math.floor( segments ) || 12;
		phiStart = phiStart || 0;
		phiLength = phiLength || Math.PI * 2;
		phiLength = MathUtils.clamp( phiLength, 0, Math.PI * 2 );
		const indices = [];
		const vertices = [];
		const uvs = [];
		const inverseSegments = 1.0 / segments;
		const vertex = new Vector3();
		const uv = new Vector2();
		for ( let i = 0; i <= segments; i ++ ) {
			const phi = phiStart + i * inverseSegments * phiLength;
			const sin = Math.sin( phi );
			const cos = Math.cos( phi );
			for ( let j = 0; j <= ( points.length - 1 ); j ++ ) {
				vertex.x = points[ j ].x * sin;
				vertex.y = points[ j ].y;
				vertex.z = points[ j ].x * cos;
				vertices.push( vertex.x, vertex.y, vertex.z );
				uv.x = i / segments;
				uv.y = j / ( points.length - 1 );
				uvs.push( uv.x, uv.y );
			}
		}
		for ( let i = 0; i < segments; i ++ ) {
			for ( let j = 0; j < ( points.length - 1 ); j ++ ) {
				const base = j + i * points.length;
				const a = base;
				const b = base + points.length;
				const c = base + points.length + 1;
				const d = base + 1;
				indices.push( a, b, d );
				indices.push( b, c, d );
			}
		}
		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
		this.computeVertexNormals();
		if ( phiLength === Math.PI * 2 ) {
			const normals = this.attributes.normal.array;
			const n1 = new Vector3();
			const n2 = new Vector3();
			const n = new Vector3();
			const base = segments * points.length * 3;
			for ( let i = 0, j = 0; i < points.length; i ++, j += 3 ) {
				n1.x = normals[ j + 0 ];
				n1.y = normals[ j + 1 ];
				n1.z = normals[ j + 2 ];
				n2.x = normals[ base + j + 0 ];
				n2.y = normals[ base + j + 1 ];
				n2.z = normals[ base + j + 2 ];
				n.addVectors( n1, n2 ).normalize();
				normals[ j + 0 ] = normals[ base + j + 0 ] = n.x;
				normals[ j + 1 ] = normals[ base + j + 1 ] = n.y;
				normals[ j + 2 ] = normals[ base + j + 2 ] = n.z;
			}
		}
	}
}
class ShapeGeometry extends Geometry {
	constructor( shapes, curveSegments ) {
		super();
		this.type = 'ShapeGeometry';
		if ( typeof curveSegments === 'object' ) {
			console.warn( 'THREE.ShapeGeometry: Options parameter has been removed.' );
			curveSegments = curveSegments.curveSegments;
		}
		this.parameters = {
			shapes: shapes,
			curveSegments: curveSegments
		};
		this.fromBufferGeometry( new ShapeBufferGeometry( shapes, curveSegments ) );
		this.mergeVertices();
	}
	toJSON() {
		const data = Geometry.prototype.toJSON.call( this );
		const shapes = this.parameters.shapes;
		return toJSON$1( shapes, data );
	}
}
class ShapeBufferGeometry extends BufferGeometry {
	constructor( shapes, curveSegments ) {
		super();
		this.type = 'ShapeBufferGeometry';
		this.parameters = {
			shapes: shapes,
			curveSegments: curveSegments
		};
		curveSegments = curveSegments || 12;
		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];
		let groupStart = 0;
		let groupCount = 0;
		if ( Array.isArray( shapes ) === false ) {
			addShape( shapes );
		} else {
			for ( let i = 0; i < shapes.length; i ++ ) {
				addShape( shapes[ i ] );
				this.addGroup( groupStart, groupCount, i );
				groupStart += groupCount;
				groupCount = 0;
			}
		}
		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
		function addShape( shape ) {
			const indexOffset = vertices.length / 3;
			const points = shape.extractPoints( curveSegments );
			let shapeVertices = points.shape;
			const shapeHoles = points.holes;
			if ( ShapeUtils.isClockWise( shapeVertices ) === false ) {
				shapeVertices = shapeVertices.reverse();
			}
			for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {
				const shapeHole = shapeHoles[ i ];
				if ( ShapeUtils.isClockWise( shapeHole ) === true ) {
					shapeHoles[ i ] = shapeHole.reverse();
				}
			}
			const faces = ShapeUtils.triangulateShape( shapeVertices, shapeHoles );
			for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {
				const shapeHole = shapeHoles[ i ];
				shapeVertices = shapeVertices.concat( shapeHole );
			}
			for ( let i = 0, l = shapeVertices.length; i < l; i ++ ) {
				const vertex = shapeVertices[ i ];
				vertices.push( vertex.x, vertex.y, 0 );
				normals.push( 0, 0, 1 );
				uvs.push( vertex.x, vertex.y );
			}
			for ( let i = 0, l = faces.length; i < l; i ++ ) {
				const face = faces[ i ];
				const a = face[ 0 ] + indexOffset;
				const b = face[ 1 ] + indexOffset;
				const c = face[ 2 ] + indexOffset;
				indices.push( a, b, c );
				groupCount += 3;
			}
		}
	}
	toJSON() {
		const data = BufferGeometry.prototype.toJSON.call( this );
		const shapes = this.parameters.shapes;
		return toJSON$1( shapes, data );
	}
}
function toJSON$1( shapes, data ) {
	data.shapes = [];
	if ( Array.isArray( shapes ) ) {
		for ( let i = 0, l = shapes.length; i < l; i ++ ) {
			const shape = shapes[ i ];
			data.shapes.push( shape.uuid );
		}
	} else {
		data.shapes.push( shapes.uuid );
	}
	return data;
}
class EdgesGeometry extends BufferGeometry {
	constructor( geometry, thresholdAngle ) {
		super();
		this.type = 'EdgesGeometry';
		this.parameters = {
			thresholdAngle: thresholdAngle
		};
		thresholdAngle = ( thresholdAngle !== undefined ) ? thresholdAngle : 1;
		const vertices = [];
		const thresholdDot = Math.cos( MathUtils.DEG2RAD * thresholdAngle );
		const edge = [ 0, 0 ], edges = {};
		let edge1, edge2, key;
		const keys = [ 'a', 'b', 'c' ];
		let geometry2;
		if ( geometry.isBufferGeometry ) {
			geometry2 = new Geometry();
			geometry2.fromBufferGeometry( geometry );
		} else {
			geometry2 = geometry.clone();
		}
		geometry2.mergeVertices();
		geometry2.computeFaceNormals();
		const sourceVertices = geometry2.vertices;
		const faces = geometry2.faces;
		for ( let i = 0, l = faces.length; i < l; i ++ ) {
			const face = faces[ i ];
			for ( let j = 0; j < 3; j ++ ) {
				edge1 = face[ keys[ j ] ];
				edge2 = face[ keys[ ( j + 1 ) % 3 ] ];
				edge[ 0 ] = Math.min( edge1, edge2 );
				edge[ 1 ] = Math.max( edge1, edge2 );
				key = edge[ 0 ] + ',' + edge[ 1 ];
				if ( edges[ key ] === undefined ) {
					edges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ], face1: i, face2: undefined };
				} else {
					edges[ key ].face2 = i;
				}
			}
		}
		for ( key in edges ) {
			const e = edges[ key ];
			if ( e.face2 === undefined || faces[ e.face1 ].normal.dot( faces[ e.face2 ].normal ) <= thresholdDot ) {
				let vertex = sourceVertices[ e.index1 ];
				vertices.push( vertex.x, vertex.y, vertex.z );
				vertex = sourceVertices[ e.index2 ];
				vertices.push( vertex.x, vertex.y, vertex.z );
			}
		}
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
	}
}
class CylinderGeometry extends Geometry {
	constructor( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
		super();
		this.type = 'CylinderGeometry';
		this.parameters = {
			radiusTop: radiusTop,
			radiusBottom: radiusBottom,
			height: height,
			radialSegments: radialSegments,
			heightSegments: heightSegments,
			openEnded: openEnded,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};
		this.fromBufferGeometry( new CylinderBufferGeometry( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) );
		this.mergeVertices();
	}
}
class CylinderBufferGeometry extends BufferGeometry {
	constructor( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
		super();
		this.type = 'CylinderBufferGeometry';
		this.parameters = {
			radiusTop: radiusTop,
			radiusBottom: radiusBottom,
			height: height,
			radialSegments: radialSegments,
			heightSegments: heightSegments,
			openEnded: openEnded,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};
		const scope = this;
		radiusTop = radiusTop !== undefined ? radiusTop : 1;
		radiusBottom = radiusBottom !== undefined ? radiusBottom : 1;
		height = height || 1;
		radialSegments = Math.floor( radialSegments ) || 8;
		heightSegments = Math.floor( heightSegments ) || 1;
		openEnded = openEnded !== undefined ? openEnded : false;
		thetaStart = thetaStart !== undefined ? thetaStart : 0.0;
		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI * 2;
		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];
		let index = 0;
		const indexArray = [];
		const halfHeight = height / 2;
		let groupStart = 0;
		generateTorso();
		if ( openEnded === false ) {
			if ( radiusTop > 0 ) generateCap( true );
			if ( radiusBottom > 0 ) generateCap( false );
		}
		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
		function generateTorso() {
			const normal = new Vector3();
			const vertex = new Vector3();
			let groupCount = 0;
			const slope = ( radiusBottom - radiusTop ) / height;
			for ( let y = 0; y <= heightSegments; y ++ ) {
				const indexRow = [];
				const v = y / heightSegments;
				const radius = v * ( radiusBottom - radiusTop ) + radiusTop;
				for ( let x = 0; x <= radialSegments; x ++ ) {
					const u = x / radialSegments;
					const theta = u * thetaLength + thetaStart;
					const sinTheta = Math.sin( theta );
					const cosTheta = Math.cos( theta );
					vertex.x = radius * sinTheta;
					vertex.y = - v * height + halfHeight;
					vertex.z = radius * cosTheta;
					vertices.push( vertex.x, vertex.y, vertex.z );
					normal.set( sinTheta, slope, cosTheta ).normalize();
					normals.push( normal.x, normal.y, normal.z );
					uvs.push( u, 1 - v );
					indexRow.push( index ++ );
				}
				indexArray.push( indexRow );
			}
			for ( let x = 0; x < radialSegments; x ++ ) {
				for ( let y = 0; y < heightSegments; y ++ ) {
					const a = indexArray[ y ][ x ];
					const b = indexArray[ y + 1 ][ x ];
					const c = indexArray[ y + 1 ][ x + 1 ];
					const d = indexArray[ y ][ x + 1 ];
					indices.push( a, b, d );
					indices.push( b, c, d );
					groupCount += 6;
				}
			}
			scope.addGroup( groupStart, groupCount, 0 );
			groupStart += groupCount;
		}
		function generateCap( top ) {
			const centerIndexStart = index;
			const uv = new Vector2();
			const vertex = new Vector3();
			let groupCount = 0;
			const radius = ( top === true ) ? radiusTop : radiusBottom;
			const sign = ( top === true ) ? 1 : - 1;
			for ( let x = 1; x <= radialSegments; x ++ ) {
				vertices.push( 0, halfHeight * sign, 0 );
				normals.push( 0, sign, 0 );
				uvs.push( 0.5, 0.5 );
				index ++;
			}
			const centerIndexEnd = index;
			for ( let x = 0; x <= radialSegments; x ++ ) {
				const u = x / radialSegments;
				const theta = u * thetaLength + thetaStart;
				const cosTheta = Math.cos( theta );
				const sinTheta = Math.sin( theta );
				vertex.x = radius * sinTheta;
				vertex.y = halfHeight * sign;
				vertex.z = radius * cosTheta;
				vertices.push( vertex.x, vertex.y, vertex.z );
				normals.push( 0, sign, 0 );
				uv.x = ( cosTheta * 0.5 ) + 0.5;
				uv.y = ( sinTheta * 0.5 * sign ) + 0.5;
				uvs.push( uv.x, uv.y );
				index ++;
			}
			for ( let x = 0; x < radialSegments; x ++ ) {
				const c = centerIndexStart + x;
				const i = centerIndexEnd + x;
				if ( top === true ) {
					indices.push( i, i + 1, c );
				} else {
					indices.push( i + 1, i, c );
				}
				groupCount += 3;
			}
			scope.addGroup( groupStart, groupCount, top === true ? 1 : 2 );
			groupStart += groupCount;
		}
	}
}
class ConeGeometry extends CylinderGeometry {
	constructor( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
		super( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );
		this.type = 'ConeGeometry';
		this.parameters = {
			radius: radius,
			height: height,
			radialSegments: radialSegments,
			heightSegments: heightSegments,
			openEnded: openEnded,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};
	}
}
class ConeBufferGeometry extends CylinderBufferGeometry {
	constructor( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
		super( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );
		this.type = 'ConeBufferGeometry';
		this.parameters = {
			radius: radius,
			height: height,
			radialSegments: radialSegments,
			heightSegments: heightSegments,
			openEnded: openEnded,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};
	}
}
class CircleGeometry extends Geometry {
	constructor( radius, segments, thetaStart, thetaLength ) {
		super();
		this.type = 'CircleGeometry';
		this.parameters = {
			radius: radius,
			segments: segments,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};
		this.fromBufferGeometry( new CircleBufferGeometry( radius, segments, thetaStart, thetaLength ) );
		this.mergeVertices();
	}
}
class CircleBufferGeometry extends BufferGeometry {
	constructor( radius, segments, thetaStart, thetaLength ) {
		super();
		this.type = 'CircleBufferGeometry';
		this.parameters = {
			radius: radius,
			segments: segments,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};
		radius = radius || 1;
		segments = segments !== undefined ? Math.max( 3, segments ) : 8;
		thetaStart = thetaStart !== undefined ? thetaStart : 0;
		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI * 2;
		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];
		const vertex = new Vector3();
		const uv = new Vector2();
		vertices.push( 0, 0, 0 );
		normals.push( 0, 0, 1 );
		uvs.push( 0.5, 0.5 );
		for ( let s = 0, i = 3; s <= segments; s ++, i += 3 ) {
			const segment = thetaStart + s / segments * thetaLength;
			vertex.x = radius * Math.cos( segment );
			vertex.y = radius * Math.sin( segment );
			vertices.push( vertex.x, vertex.y, vertex.z );
			normals.push( 0, 0, 1 );
			uv.x = ( vertices[ i ] / radius + 1 ) / 2;
			uv.y = ( vertices[ i + 1 ] / radius + 1 ) / 2;
			uvs.push( uv.x, uv.y );
		}
		for ( let i = 1; i <= segments; i ++ ) {
			indices.push( i, i + 1, 0 );
		}
		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
	}
}
var Geometries = Object.freeze({
	__proto__: null,
	WireframeGeometry: WireframeGeometry,
	ParametricGeometry: ParametricGeometry,
	ParametricBufferGeometry: ParametricBufferGeometry,
	TetrahedronGeometry: TetrahedronGeometry,
	TetrahedronBufferGeometry: TetrahedronBufferGeometry,
	OctahedronGeometry: OctahedronGeometry,
	OctahedronBufferGeometry: OctahedronBufferGeometry,
	IcosahedronGeometry: IcosahedronGeometry,
	IcosahedronBufferGeometry: IcosahedronBufferGeometry,
	DodecahedronGeometry: DodecahedronGeometry,
	DodecahedronBufferGeometry: DodecahedronBufferGeometry,
	PolyhedronGeometry: PolyhedronGeometry,
	PolyhedronBufferGeometry: PolyhedronBufferGeometry,
	TubeGeometry: TubeGeometry,
	TubeBufferGeometry: TubeBufferGeometry,
	TorusKnotGeometry: TorusKnotGeometry,
	TorusKnotBufferGeometry: TorusKnotBufferGeometry,
	TorusGeometry: TorusGeometry,
	TorusBufferGeometry: TorusBufferGeometry,
	TextGeometry: TextGeometry,
	TextBufferGeometry: TextBufferGeometry,
	SphereGeometry: SphereGeometry,
	SphereBufferGeometry: SphereBufferGeometry,
	RingGeometry: RingGeometry,
	RingBufferGeometry: RingBufferGeometry,
	PlaneGeometry: PlaneGeometry,
	PlaneBufferGeometry: PlaneBufferGeometry,
	LatheGeometry: LatheGeometry,
	LatheBufferGeometry: LatheBufferGeometry,
	ShapeGeometry: ShapeGeometry,
	ShapeBufferGeometry: ShapeBufferGeometry,
	ExtrudeGeometry: ExtrudeGeometry,
	ExtrudeBufferGeometry: ExtrudeBufferGeometry,
	EdgesGeometry: EdgesGeometry,
	ConeGeometry: ConeGeometry,
	ConeBufferGeometry: ConeBufferGeometry,
	CylinderGeometry: CylinderGeometry,
	CylinderBufferGeometry: CylinderBufferGeometry,
	CircleGeometry: CircleGeometry,
	CircleBufferGeometry: CircleBufferGeometry,
	BoxGeometry: BoxGeometry,
	BoxBufferGeometry: BoxBufferGeometry
});
function ShadowMaterial( parameters ) {
	Material.call( this );
	this.type = 'ShadowMaterial';
	this.color = new Color( 0x000000 );
	this.transparent = true;
	this.setValues( parameters );
}
ShadowMaterial.prototype = Object.create( Material.prototype );
ShadowMaterial.prototype.constructor = ShadowMaterial;
ShadowMaterial.prototype.isShadowMaterial = true;
ShadowMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.color.copy( source.color );
	return this;
};
function RawShaderMaterial( parameters ) {
	ShaderMaterial.call( this, parameters );
	this.type = 'RawShaderMaterial';
}
RawShaderMaterial.prototype = Object.create( ShaderMaterial.prototype );
RawShaderMaterial.prototype.constructor = RawShaderMaterial;
RawShaderMaterial.prototype.isRawShaderMaterial = true;
function MeshStandardMaterial( parameters ) {
	Material.call( this );
	this.defines = { 'STANDARD': '' };
	this.type = 'MeshStandardMaterial';
	this.color = new Color( 0xffffff );
	this.roughness = 1.0;
	this.metalness = 0.0;
	this.map = null;
	this.lightMap = null;
	this.lightMapIntensity = 1.0;
	this.aoMap = null;
	this.aoMapIntensity = 1.0;
	this.emissive = new Color( 0x000000 );
	this.emissiveIntensity = 1.0;
	this.emissiveMap = null;
	this.bumpMap = null;
	this.bumpScale = 1;
	this.normalMap = null;
	this.normalMapType = TangentSpaceNormalMap;
	this.normalScale = new Vector2( 1, 1 );
	this.displacementMap = null;
	this.displacementScale = 1;
	this.displacementBias = 0;
	this.roughnessMap = null;
	this.metalnessMap = null;
	this.alphaMap = null;
	this.envMap = null;
	this.envMapIntensity = 1.0;
	this.refractionRatio = 0.98;
	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.wireframeLinecap = 'round';
	this.wireframeLinejoin = 'round';
	this.skinning = false;
	this.morphTargets = false;
	this.morphNormals = false;
	this.vertexTangents = false;
	this.setValues( parameters );
}
MeshStandardMaterial.prototype = Object.create( Material.prototype );
MeshStandardMaterial.prototype.constructor = MeshStandardMaterial;
MeshStandardMaterial.prototype.isMeshStandardMaterial = true;
MeshStandardMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.defines = { 'STANDARD': '' };
	this.color.copy( source.color );
	this.roughness = source.roughness;
	this.metalness = source.metalness;
	this.map = source.map;
	this.lightMap = source.lightMap;
	this.lightMapIntensity = source.lightMapIntensity;
	this.aoMap = source.aoMap;
	this.aoMapIntensity = source.aoMapIntensity;
	this.emissive.copy( source.emissive );
	this.emissiveMap = source.emissiveMap;
	this.emissiveIntensity = source.emissiveIntensity;
	this.bumpMap = source.bumpMap;
	this.bumpScale = source.bumpScale;
	this.normalMap = source.normalMap;
	this.normalMapType = source.normalMapType;
	this.normalScale.copy( source.normalScale );
	this.displacementMap = source.displacementMap;
	this.displacementScale = source.displacementScale;
	this.displacementBias = source.displacementBias;
	this.roughnessMap = source.roughnessMap;
	this.metalnessMap = source.metalnessMap;
	this.alphaMap = source.alphaMap;
	this.envMap = source.envMap;
	this.envMapIntensity = source.envMapIntensity;
	this.refractionRatio = source.refractionRatio;
	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	this.wireframeLinecap = source.wireframeLinecap;
	this.wireframeLinejoin = source.wireframeLinejoin;
	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.morphNormals = source.morphNormals;
	this.vertexTangents = source.vertexTangents;
	return this;
};
function MeshPhysicalMaterial( parameters ) {
	MeshStandardMaterial.call( this );
	this.defines = {
		'STANDARD': '',
		'PHYSICAL': ''
	};
	this.type = 'MeshPhysicalMaterial';
	this.clearcoat = 0.0;
	this.clearcoatMap = null;
	this.clearcoatRoughness = 0.0;
	this.clearcoatRoughnessMap = null;
	this.clearcoatNormalScale = new Vector2( 1, 1 );
	this.clearcoatNormalMap = null;
	this.reflectivity = 0.5;
	this.sheen = null;
	this.transmission = 0.0;
	this.transmissionMap = null;
	this.setValues( parameters );
}
MeshPhysicalMaterial.prototype = Object.create( MeshStandardMaterial.prototype );
MeshPhysicalMaterial.prototype.constructor = MeshPhysicalMaterial;
MeshPhysicalMaterial.prototype.isMeshPhysicalMaterial = true;
MeshPhysicalMaterial.prototype.copy = function ( source ) {
	MeshStandardMaterial.prototype.copy.call( this, source );
	this.defines = {
		'STANDARD': '',
		'PHYSICAL': ''
	};
	this.clearcoat = source.clearcoat;
	this.clearcoatMap = source.clearcoatMap;
	this.clearcoatRoughness = source.clearcoatRoughness;
	this.clearcoatRoughnessMap = source.clearcoatRoughnessMap;
	this.clearcoatNormalMap = source.clearcoatNormalMap;
	this.clearcoatNormalScale.copy( source.clearcoatNormalScale );
	this.reflectivity = source.reflectivity;
	if ( source.sheen ) {
		this.sheen = ( this.sheen || new Color() ).copy( source.sheen );
	} else {
		this.sheen = null;
	}
	this.transmission = source.transmission;
	this.transmissionMap = source.transmissionMap;
	return this;
};
function MeshPhongMaterial( parameters ) {
	Material.call( this );
	this.type = 'MeshPhongMaterial';
	this.color = new Color( 0xffffff );
	this.specular = new Color( 0x111111 );
	this.shininess = 30;
	this.map = null;
	this.lightMap = null;
	this.lightMapIntensity = 1.0;
	this.aoMap = null;
	this.aoMapIntensity = 1.0;
	this.emissive = new Color( 0x000000 );
	this.emissiveIntensity = 1.0;
	this.emissiveMap = null;
	this.bumpMap = null;
	this.bumpScale = 1;
	this.normalMap = null;
	this.normalMapType = TangentSpaceNormalMap;
	this.normalScale = new Vector2( 1, 1 );
	this.displacementMap = null;
	this.displacementScale = 1;
	this.displacementBias = 0;
	this.specularMap = null;
	this.alphaMap = null;
	this.envMap = null;
	this.combine = MultiplyOperation;
	this.reflectivity = 1;
	this.refractionRatio = 0.98;
	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.wireframeLinecap = 'round';
	this.wireframeLinejoin = 'round';
	this.skinning = false;
	this.morphTargets = false;
	this.morphNormals = false;
	this.setValues( parameters );
}
MeshPhongMaterial.prototype = Object.create( Material.prototype );
MeshPhongMaterial.prototype.constructor = MeshPhongMaterial;
MeshPhongMaterial.prototype.isMeshPhongMaterial = true;
MeshPhongMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.color.copy( source.color );
	this.specular.copy( source.specular );
	this.shininess = source.shininess;
	this.map = source.map;
	this.lightMap = source.lightMap;
	this.lightMapIntensity = source.lightMapIntensity;
	this.aoMap = source.aoMap;
	this.aoMapIntensity = source.aoMapIntensity;
	this.emissive.copy( source.emissive );
	this.emissiveMap = source.emissiveMap;
	this.emissiveIntensity = source.emissiveIntensity;
	this.bumpMap = source.bumpMap;
	this.bumpScale = source.bumpScale;
	this.normalMap = source.normalMap;
	this.normalMapType = source.normalMapType;
	this.normalScale.copy( source.normalScale );
	this.displacementMap = source.displacementMap;
	this.displacementScale = source.displacementScale;
	this.displacementBias = source.displacementBias;
	this.specularMap = source.specularMap;
	this.alphaMap = source.alphaMap;
	this.envMap = source.envMap;
	this.combine = source.combine;
	this.reflectivity = source.reflectivity;
	this.refractionRatio = source.refractionRatio;
	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	this.wireframeLinecap = source.wireframeLinecap;
	this.wireframeLinejoin = source.wireframeLinejoin;
	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.morphNormals = source.morphNormals;
	return this;
};
function MeshToonMaterial( parameters ) {
	Material.call( this );
	this.defines = { 'TOON': '' };
	this.type = 'MeshToonMaterial';
	this.color = new Color( 0xffffff );
	this.map = null;
	this.gradientMap = null;
	this.lightMap = null;
	this.lightMapIntensity = 1.0;
	this.aoMap = null;
	this.aoMapIntensity = 1.0;
	this.emissive = new Color( 0x000000 );
	this.emissiveIntensity = 1.0;
	this.emissiveMap = null;
	this.bumpMap = null;
	this.bumpScale = 1;
	this.normalMap = null;
	this.normalMapType = TangentSpaceNormalMap;
	this.normalScale = new Vector2( 1, 1 );
	this.displacementMap = null;
	this.displacementScale = 1;
	this.displacementBias = 0;
	this.alphaMap = null;
	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.wireframeLinecap = 'round';
	this.wireframeLinejoin = 'round';
	this.skinning = false;
	this.morphTargets = false;
	this.morphNormals = false;
	this.setValues( parameters );
}
MeshToonMaterial.prototype = Object.create( Material.prototype );
MeshToonMaterial.prototype.constructor = MeshToonMaterial;
MeshToonMaterial.prototype.isMeshToonMaterial = true;
MeshToonMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.color.copy( source.color );
	this.map = source.map;
	this.gradientMap = source.gradientMap;
	this.lightMap = source.lightMap;
	this.lightMapIntensity = source.lightMapIntensity;
	this.aoMap = source.aoMap;
	this.aoMapIntensity = source.aoMapIntensity;
	this.emissive.copy( source.emissive );
	this.emissiveMap = source.emissiveMap;
	this.emissiveIntensity = source.emissiveIntensity;
	this.bumpMap = source.bumpMap;
	this.bumpScale = source.bumpScale;
	this.normalMap = source.normalMap;
	this.normalMapType = source.normalMapType;
	this.normalScale.copy( source.normalScale );
	this.displacementMap = source.displacementMap;
	this.displacementScale = source.displacementScale;
	this.displacementBias = source.displacementBias;
	this.alphaMap = source.alphaMap;
	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	this.wireframeLinecap = source.wireframeLinecap;
	this.wireframeLinejoin = source.wireframeLinejoin;
	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.morphNormals = source.morphNormals;
	return this;
};
function MeshNormalMaterial( parameters ) {
	Material.call( this );
	this.type = 'MeshNormalMaterial';
	this.bumpMap = null;
	this.bumpScale = 1;
	this.normalMap = null;
	this.normalMapType = TangentSpaceNormalMap;
	this.normalScale = new Vector2( 1, 1 );
	this.displacementMap = null;
	this.displacementScale = 1;
	this.displacementBias = 0;
	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.fog = false;
	this.skinning = false;
	this.morphTargets = false;
	this.morphNormals = false;
	this.setValues( parameters );
}
MeshNormalMaterial.prototype = Object.create( Material.prototype );
MeshNormalMaterial.prototype.constructor = MeshNormalMaterial;
MeshNormalMaterial.prototype.isMeshNormalMaterial = true;
MeshNormalMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.bumpMap = source.bumpMap;
	this.bumpScale = source.bumpScale;
	this.normalMap = source.normalMap;
	this.normalMapType = source.normalMapType;
	this.normalScale.copy( source.normalScale );
	this.displacementMap = source.displacementMap;
	this.displacementScale = source.displacementScale;
	this.displacementBias = source.displacementBias;
	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.morphNormals = source.morphNormals;
	return this;
};
function MeshLambertMaterial( parameters ) {
	Material.call( this );
	this.type = 'MeshLambertMaterial';
	this.color = new Color( 0xffffff );
	this.map = null;
	this.lightMap = null;
	this.lightMapIntensity = 1.0;
	this.aoMap = null;
	this.aoMapIntensity = 1.0;
	this.emissive = new Color( 0x000000 );
	this.emissiveIntensity = 1.0;
	this.emissiveMap = null;
	this.specularMap = null;
	this.alphaMap = null;
	this.envMap = null;
	this.combine = MultiplyOperation;
	this.reflectivity = 1;
	this.refractionRatio = 0.98;
	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.wireframeLinecap = 'round';
	this.wireframeLinejoin = 'round';
	this.skinning = false;
	this.morphTargets = false;
	this.morphNormals = false;
	this.setValues( parameters );
}
MeshLambertMaterial.prototype = Object.create( Material.prototype );
MeshLambertMaterial.prototype.constructor = MeshLambertMaterial;
MeshLambertMaterial.prototype.isMeshLambertMaterial = true;
MeshLambertMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.color.copy( source.color );
	this.map = source.map;
	this.lightMap = source.lightMap;
	this.lightMapIntensity = source.lightMapIntensity;
	this.aoMap = source.aoMap;
	this.aoMapIntensity = source.aoMapIntensity;
	this.emissive.copy( source.emissive );
	this.emissiveMap = source.emissiveMap;
	this.emissiveIntensity = source.emissiveIntensity;
	this.specularMap = source.specularMap;
	this.alphaMap = source.alphaMap;
	this.envMap = source.envMap;
	this.combine = source.combine;
	this.reflectivity = source.reflectivity;
	this.refractionRatio = source.refractionRatio;
	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	this.wireframeLinecap = source.wireframeLinecap;
	this.wireframeLinejoin = source.wireframeLinejoin;
	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.morphNormals = source.morphNormals;
	return this;
};
function MeshMatcapMaterial( parameters ) {
	Material.call( this );
	this.defines = { 'MATCAP': '' };
	this.type = 'MeshMatcapMaterial';
	this.color = new Color( 0xffffff );
	this.matcap = null;
	this.map = null;
	this.bumpMap = null;
	this.bumpScale = 1;
	this.normalMap = null;
	this.normalMapType = TangentSpaceNormalMap;
	this.normalScale = new Vector2( 1, 1 );
	this.displacementMap = null;
	this.displacementScale = 1;
	this.displacementBias = 0;
	this.alphaMap = null;
	this.skinning = false;
	this.morphTargets = false;
	this.morphNormals = false;
	this.setValues( parameters );
}
MeshMatcapMaterial.prototype = Object.create( Material.prototype );
MeshMatcapMaterial.prototype.constructor = MeshMatcapMaterial;
MeshMatcapMaterial.prototype.isMeshMatcapMaterial = true;
MeshMatcapMaterial.prototype.copy = function ( source ) {
	Material.prototype.copy.call( this, source );
	this.defines = { 'MATCAP': '' };
	this.color.copy( source.color );
	this.matcap = source.matcap;
	this.map = source.map;
	this.bumpMap = source.bumpMap;
	this.bumpScale = source.bumpScale;
	this.normalMap = source.normalMap;
	this.normalMapType = source.normalMapType;
	this.normalScale.copy( source.normalScale );
	this.displacementMap = source.displacementMap;
	this.displacementScale = source.displacementScale;
	this.displacementBias = source.displacementBias;
	this.alphaMap = source.alphaMap;
	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.morphNormals = source.morphNormals;
	return this;
};
function LineDashedMaterial( parameters ) {
	LineBasicMaterial.call( this );
	this.type = 'LineDashedMaterial';
	this.scale = 1;
	this.dashSize = 3;
	this.gapSize = 1;
	this.setValues( parameters );
}
LineDashedMaterial.prototype = Object.create( LineBasicMaterial.prototype );
LineDashedMaterial.prototype.constructor = LineDashedMaterial;
LineDashedMaterial.prototype.isLineDashedMaterial = true;
LineDashedMaterial.prototype.copy = function ( source ) {
	LineBasicMaterial.prototype.copy.call( this, source );
	this.scale = source.scale;
	this.dashSize = source.dashSize;
	this.gapSize = source.gapSize;
	return this;
};
var Materials = Object.freeze({
	__proto__: null,
	ShadowMaterial: ShadowMaterial,
	SpriteMaterial: SpriteMaterial,
	RawShaderMaterial: RawShaderMaterial,
	ShaderMaterial: ShaderMaterial,
	PointsMaterial: PointsMaterial,
	MeshPhysicalMaterial: MeshPhysicalMaterial,
	MeshStandardMaterial: MeshStandardMaterial,
	MeshPhongMaterial: MeshPhongMaterial,
	MeshToonMaterial: MeshToonMaterial,
	MeshNormalMaterial: MeshNormalMaterial,
	MeshLambertMaterial: MeshLambertMaterial,
	MeshDepthMaterial: MeshDepthMaterial,
	MeshDistanceMaterial: MeshDistanceMaterial,
	MeshBasicMaterial: MeshBasicMaterial,
	MeshMatcapMaterial: MeshMatcapMaterial,
	LineDashedMaterial: LineDashedMaterial,
	LineBasicMaterial: LineBasicMaterial,
	Material: Material
});
const AnimationUtils = {
	arraySlice: function ( array, from, to ) {
		if ( AnimationUtils.isTypedArray( array ) ) {
			return new array.constructor( array.subarray( from, to !== undefined ? to : array.length ) );
		}
		return array.slice( from, to );
	},
	convertArray: function ( array, type, forceClone ) {
		if ( ! array ||
			! forceClone && array.constructor === type ) return array;
		if ( typeof type.BYTES_PER_ELEMENT === 'number' ) {
			return new type( array );
		}
		return Array.prototype.slice.call( array );
	},
	isTypedArray: function ( object ) {
		return ArrayBuffer.isView( object ) &&
			! ( object instanceof DataView );
	},
	getKeyframeOrder: function ( times ) {
		function compareTime( i, j ) {
			return times[ i ] - times[ j ];
		}
		const n = times.length;
		const result = new Array( n );
		for ( let i = 0; i !== n; ++ i ) result[ i ] = i;
		result.sort( compareTime );
		return result;
	},
	sortedArray: function ( values, stride, order ) {
		const nValues = values.length;
		const result = new values.constructor( nValues );
		for ( let i = 0, dstOffset = 0; dstOffset !== nValues; ++ i ) {
			const srcOffset = order[ i ] * stride;
			for ( let j = 0; j !== stride; ++ j ) {
				result[ dstOffset ++ ] = values[ srcOffset + j ];
			}
		}
		return result;
	},
	flattenJSON: function ( jsonKeys, times, values, valuePropertyName ) {
		let i = 1, key = jsonKeys[ 0 ];
		while ( key !== undefined && key[ valuePropertyName ] === undefined ) {
			key = jsonKeys[ i ++ ];
		}
		if ( key === undefined ) return;
		let value = key[ valuePropertyName ];
		if ( value === undefined ) return;
		if ( Array.isArray( value ) ) {
			do {
				value = key[ valuePropertyName ];
				if ( value !== undefined ) {
					times.push( key.time );
					values.push.apply( values, value );
				}
				key = jsonKeys[ i ++ ];
			} while ( key !== undefined );
		} else if ( value.toArray !== undefined ) {
			do {
				value = key[ valuePropertyName ];
				if ( value !== undefined ) {
					times.push( key.time );
					value.toArray( values, values.length );
				}
				key = jsonKeys[ i ++ ];
			} while ( key !== undefined );
		} else {
			do {
				value = key[ valuePropertyName ];
				if ( value !== undefined ) {
					times.push( key.time );
					values.push( value );
				}
				key = jsonKeys[ i ++ ];
			} while ( key !== undefined );
		}
	},
	subclip: function ( sourceClip, name, startFrame, endFrame, fps ) {
		fps = fps || 30;
		const clip = sourceClip.clone();
		clip.name = name;
		const tracks = [];
		for ( let i = 0; i < clip.tracks.length; ++ i ) {
			const track = clip.tracks[ i ];
			const valueSize = track.getValueSize();
			const times = [];
			const values = [];
			for ( let j = 0; j < track.times.length; ++ j ) {
				const frame = track.times[ j ] * fps;
				if ( frame < startFrame || frame >= endFrame ) continue;
				times.push( track.times[ j ] );
				for ( let k = 0; k < valueSize; ++ k ) {
					values.push( track.values[ j * valueSize + k ] );
				}
			}
			if ( times.length === 0 ) continue;
			track.times = AnimationUtils.convertArray( times, track.times.constructor );
			track.values = AnimationUtils.convertArray( values, track.values.constructor );
			tracks.push( track );
		}
		clip.tracks = tracks;
		let minStartTime = Infinity;
		for ( let i = 0; i < clip.tracks.length; ++ i ) {
			if ( minStartTime > clip.tracks[ i ].times[ 0 ] ) {
				minStartTime = clip.tracks[ i ].times[ 0 ];
			}
		}
		for ( let i = 0; i < clip.tracks.length; ++ i ) {
			clip.tracks[ i ].shift( - 1 * minStartTime );
		}
		clip.resetDuration();
		return clip;
	},
	makeClipAdditive: function ( targetClip, referenceFrame, referenceClip, fps ) {
		if ( referenceFrame === undefined ) referenceFrame = 0;
		if ( referenceClip === undefined ) referenceClip = targetClip;
		if ( fps === undefined || fps <= 0 ) fps = 30;
		const numTracks = targetClip.tracks.length;
		const referenceTime = referenceFrame / fps;
		for ( let i = 0; i < numTracks; ++ i ) {
			const referenceTrack = referenceClip.tracks[ i ];
			const referenceTrackType = referenceTrack.ValueTypeName;
			if ( referenceTrackType === 'bool' || referenceTrackType === 'string' ) continue;
			const targetTrack = targetClip.tracks.find( function ( track ) {
				return track.name === referenceTrack.name
					&& track.ValueTypeName === referenceTrackType;
			} );
			if ( targetTrack === undefined ) continue;
			let referenceOffset = 0;
			const referenceValueSize = referenceTrack.getValueSize();
			if ( referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {
				referenceOffset = referenceValueSize / 3;
			}
			let targetOffset = 0;
			const targetValueSize = targetTrack.getValueSize();
			if ( targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {
				targetOffset = targetValueSize / 3;
			}
			const lastIndex = referenceTrack.times.length - 1;
			let referenceValue;
			if ( referenceTime <= referenceTrack.times[ 0 ] ) {
				const startIndex = referenceOffset;
				const endIndex = referenceValueSize - referenceOffset;
				referenceValue = AnimationUtils.arraySlice( referenceTrack.values, startIndex, endIndex );
			} else if ( referenceTime >= referenceTrack.times[ lastIndex ] ) {
				const startIndex = lastIndex * referenceValueSize + referenceOffset;
				const endIndex = startIndex + referenceValueSize - referenceOffset;
				referenceValue = AnimationUtils.arraySlice( referenceTrack.values, startIndex, endIndex );
			} else {
				const interpolant = referenceTrack.createInterpolant();
				const startIndex = referenceOffset;
				const endIndex = referenceValueSize - referenceOffset;
				interpolant.evaluate( referenceTime );
				referenceValue = AnimationUtils.arraySlice( interpolant.resultBuffer, startIndex, endIndex );
			}
			if ( referenceTrackType === 'quaternion' ) {
				const referenceQuat = new Quaternion().fromArray( referenceValue ).normalize().conjugate();
				referenceQuat.toArray( referenceValue );
			}
			const numTimes = targetTrack.times.length;
			for ( let j = 0; j < numTimes; ++ j ) {
				const valueStart = j * targetValueSize + targetOffset;
				if ( referenceTrackType === 'quaternion' ) {
					Quaternion.multiplyQuaternionsFlat(
						targetTrack.values,
						valueStart,
						referenceValue,
						0,
						targetTrack.values,
						valueStart
					);
				} else {
					const valueEnd = targetValueSize - targetOffset * 2;
					for ( let k = 0; k < valueEnd; ++ k ) {
						targetTrack.values[ valueStart + k ] -= referenceValue[ k ];
					}
				}
			}
		}
		targetClip.blendMode = AdditiveAnimationBlendMode;
		return targetClip;
	}
};
function Interpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
	this.parameterPositions = parameterPositions;
	this._cachedIndex = 0;
	this.resultBuffer = resultBuffer !== undefined ?
		resultBuffer : new sampleValues.constructor( sampleSize );
	this.sampleValues = sampleValues;
	this.valueSize = sampleSize;
}
Object.assign( Interpolant.prototype, {
	evaluate: function ( t ) {
		const pp = this.parameterPositions;
		let i1 = this._cachedIndex,
			t1 = pp[ i1 ],
			t0 = pp[ i1 - 1 ];
		validate_interval: {
			seek: {
				let right;
				linear_scan: {
					forward_scan: if ( ! ( t < t1 ) ) {
						for ( let giveUpAt = i1 + 2; ; ) {
							if ( t1 === undefined ) {
								if ( t < t0 ) break forward_scan;
								i1 = pp.length;
								this._cachedIndex = i1;
								return this.afterEnd_( i1 - 1, t, t0 );
							}
							if ( i1 === giveUpAt ) break;
							t0 = t1;
							t1 = pp[ ++ i1 ];
							if ( t < t1 ) {
								break seek;
							}
						}
						right = pp.length;
						break linear_scan;
					}
					if ( ! ( t >= t0 ) ) {
						const t1global = pp[ 1 ];
						if ( t < t1global ) {
							i1 = 2;
							t0 = t1global;
						}
						for ( let giveUpAt = i1 - 2; ; ) {
							if ( t0 === undefined ) {
								this._cachedIndex = 0;
								return this.beforeStart_( 0, t, t1 );
							}
							if ( i1 === giveUpAt ) break;
							t1 = t0;
							t0 = pp[ -- i1 - 1 ];
							if ( t >= t0 ) {
								break seek;
							}
						}
						right = i1;
						i1 = 0;
						break linear_scan;
					}
					break validate_interval;
				}
				while ( i1 < right ) {
					const mid = ( i1 + right ) >>> 1;
					if ( t < pp[ mid ] ) {
						right = mid;
					} else {
						i1 = mid + 1;
					}
				}
				t1 = pp[ i1 ];
				t0 = pp[ i1 - 1 ];
				if ( t0 === undefined ) {
					this._cachedIndex = 0;
					return this.beforeStart_( 0, t, t1 );
				}
				if ( t1 === undefined ) {
					i1 = pp.length;
					this._cachedIndex = i1;
					return this.afterEnd_( i1 - 1, t0, t );
				}
			}
			this._cachedIndex = i1;
			this.intervalChanged_( i1, t0, t1 );
		}
		return this.interpolate_( i1, t0, t, t1 );
	},
	settings: null,
	DefaultSettings_: {},
	getSettings_: function () {
		return this.settings || this.DefaultSettings_;
	},
	copySampleValue_: function ( index ) {
		const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,
			offset = index * stride;
		for ( let i = 0; i !== stride; ++ i ) {
			result[ i ] = values[ offset + i ];
		}
		return result;
	},
	interpolate_: function (  ) {
		throw new Error( 'call to abstract method' );
	},
	intervalChanged_: function (  ) {
	}
} );
Object.assign( Interpolant.prototype, {
	beforeStart_: Interpolant.prototype.copySampleValue_,
	afterEnd_: Interpolant.prototype.copySampleValue_,
} );
function CubicInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
	Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
	this._weightPrev = - 0;
	this._offsetPrev = - 0;
	this._weightNext = - 0;
	this._offsetNext = - 0;
}
CubicInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
	constructor: CubicInterpolant,
	DefaultSettings_: {
		endingStart: ZeroCurvatureEnding,
		endingEnd: ZeroCurvatureEnding
	},
	intervalChanged_: function ( i1, t0, t1 ) {
		const pp = this.parameterPositions;
		let iPrev = i1 - 2,
			iNext = i1 + 1,
			tPrev = pp[ iPrev ],
			tNext = pp[ iNext ];
		if ( tPrev === undefined ) {
			switch ( this.getSettings_().endingStart ) {
				case ZeroSlopeEnding:
					iPrev = i1;
					tPrev = 2 * t0 - t1;
					break;
				case WrapAroundEnding:
					iPrev = pp.length - 2;
					tPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];
					break;
				default:
					iPrev = i1;
					tPrev = t1;
			}
		}
		if ( tNext === undefined ) {
			switch ( this.getSettings_().endingEnd ) {
				case ZeroSlopeEnding:
					iNext = i1;
					tNext = 2 * t1 - t0;
					break;
				case WrapAroundEnding:
					iNext = 1;
					tNext = t1 + pp[ 1 ] - pp[ 0 ];
					break;
				default:
					iNext = i1 - 1;
					tNext = t0;
			}
		}
		const halfDt = ( t1 - t0 ) * 0.5,
			stride = this.valueSize;
		this._weightPrev = halfDt / ( t0 - tPrev );
		this._weightNext = halfDt / ( tNext - t1 );
		this._offsetPrev = iPrev * stride;
		this._offsetNext = iNext * stride;
	},
	interpolate_: function ( i1, t0, t, t1 ) {
		const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,
			o1 = i1 * stride,		o0 = o1 - stride,
			oP = this._offsetPrev, 	oN = this._offsetNext,
			wP = this._weightPrev,	wN = this._weightNext,
			p = ( t - t0 ) / ( t1 - t0 ),
			pp = p * p,
			ppp = pp * p;
		const sP = - wP * ppp + 2 * wP * pp - wP * p;
		const s0 = ( 1 + wP ) * ppp + ( - 1.5 - 2 * wP ) * pp + ( - 0.5 + wP ) * p + 1;
		const s1 = ( - 1 - wN ) * ppp + ( 1.5 + wN ) * pp + 0.5 * p;
		const sN = wN * ppp - wN * pp;
		for ( let i = 0; i !== stride; ++ i ) {
			result[ i ] =
					sP * values[ oP + i ] +
					s0 * values[ o0 + i ] +
					s1 * values[ o1 + i ] +
					sN * values[ oN + i ];
		}
		return result;
	}
} );
function LinearInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
	Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
}
LinearInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
	constructor: LinearInterpolant,
	interpolate_: function ( i1, t0, t, t1 ) {
		const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,
			offset1 = i1 * stride,
			offset0 = offset1 - stride,
			weight1 = ( t - t0 ) / ( t1 - t0 ),
			weight0 = 1 - weight1;
		for ( let i = 0; i !== stride; ++ i ) {
			result[ i ] =
					values[ offset0 + i ] * weight0 +
					values[ offset1 + i ] * weight1;
		}
		return result;
	}
} );
function DiscreteInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
	Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
}
DiscreteInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
	constructor: DiscreteInterpolant,
	interpolate_: function ( i1  ) {
		return this.copySampleValue_( i1 - 1 );
	}
} );
function KeyframeTrack( name, times, values, interpolation ) {
	if ( name === undefined ) throw new Error( 'THREE.KeyframeTrack: track name is undefined' );
	if ( times === undefined || times.length === 0 ) throw new Error( 'THREE.KeyframeTrack: no keyframes in track named ' + name );
	this.name = name;
	this.times = AnimationUtils.convertArray( times, this.TimeBufferType );
	this.values = AnimationUtils.convertArray( values, this.ValueBufferType );
	this.setInterpolation( interpolation || this.DefaultInterpolation );
}
Object.assign( KeyframeTrack, {
	toJSON: function ( track ) {
		const trackType = track.constructor;
		let json;
		if ( trackType.toJSON !== undefined ) {
			json = trackType.toJSON( track );
		} else {
			json = {
				'name': track.name,
				'times': AnimationUtils.convertArray( track.times, Array ),
				'values': AnimationUtils.convertArray( track.values, Array )
			};
			const interpolation = track.getInterpolation();
			if ( interpolation !== track.DefaultInterpolation ) {
				json.interpolation = interpolation;
			}
		}
		json.type = track.ValueTypeName;
		return json;
	}
} );
Object.assign( KeyframeTrack.prototype, {
	constructor: KeyframeTrack,
	TimeBufferType: Float32Array,
	ValueBufferType: Float32Array,
	DefaultInterpolation: InterpolateLinear,
	InterpolantFactoryMethodDiscrete: function ( result ) {
		return new DiscreteInterpolant( this.times, this.values, this.getValueSize(), result );
	},
	InterpolantFactoryMethodLinear: function ( result ) {
		return new LinearInterpolant( this.times, this.values, this.getValueSize(), result );
	},
	InterpolantFactoryMethodSmooth: function ( result ) {
		return new CubicInterpolant( this.times, this.values, this.getValueSize(), result );
	},
	setInterpolation: function ( interpolation ) {
		let factoryMethod;
		switch ( interpolation ) {
			case InterpolateDiscrete:
				factoryMethod = this.InterpolantFactoryMethodDiscrete;
				break;
			case InterpolateLinear:
				factoryMethod = this.InterpolantFactoryMethodLinear;
				break;
			case InterpolateSmooth:
				factoryMethod = this.InterpolantFactoryMethodSmooth;
				break;
		}
		if ( factoryMethod === undefined ) {
			const message = "unsupported interpolation for " +
				this.ValueTypeName + " keyframe track named " + this.name;
			if ( this.createInterpolant === undefined ) {
				if ( interpolation !== this.DefaultInterpolation ) {
					this.setInterpolation( this.DefaultInterpolation );
				} else {
					throw new Error( message );
				}
			}
			console.warn( 'THREE.KeyframeTrack:', message );
			return this;
		}
		this.createInterpolant = factoryMethod;
		return this;
	},
	getInterpolation: function () {
		switch ( this.createInterpolant ) {
			case this.InterpolantFactoryMethodDiscrete:
				return InterpolateDiscrete;
			case this.InterpolantFactoryMethodLinear:
				return InterpolateLinear;
			case this.InterpolantFactoryMethodSmooth:
				return InterpolateSmooth;
		}
	},
	getValueSize: function () {
		return this.values.length / this.times.length;
	},
	shift: function ( timeOffset ) {
		if ( timeOffset !== 0.0 ) {
			const times = this.times;
			for ( let i = 0, n = times.length; i !== n; ++ i ) {
				times[ i ] += timeOffset;
			}
		}
		return this;
	},
	scale: function ( timeScale ) {
		if ( timeScale !== 1.0 ) {
			const times = this.times;
			for ( let i = 0, n = times.length; i !== n; ++ i ) {
				times[ i ] *= timeScale;
			}
		}
		return this;
	},
	trim: function ( startTime, endTime ) {
		const times = this.times,
			nKeys = times.length;
		let from = 0,
			to = nKeys - 1;
		while ( from !== nKeys && times[ from ] < startTime ) {
			++ from;
		}
		while ( to !== - 1 && times[ to ] > endTime ) {
			-- to;
		}
		++ to;
		if ( from !== 0 || to !== nKeys ) {
			if ( from >= to ) {
				to = Math.max( to, 1 );
				from = to - 1;
			}
			const stride = this.getValueSize();
			this.times = AnimationUtils.arraySlice( times, from, to );
			this.values = AnimationUtils.arraySlice( this.values, from * stride, to * stride );
		}
		return this;
	},
	validate: function () {
		let valid = true;
		const valueSize = this.getValueSize();
		if ( valueSize - Math.floor( valueSize ) !== 0 ) {
			console.error( 'THREE.KeyframeTrack: Invalid value size in track.', this );
			valid = false;
		}
		const times = this.times,
			values = this.values,
			nKeys = times.length;
		if ( nKeys === 0 ) {
			console.error( 'THREE.KeyframeTrack: Track is empty.', this );
			valid = false;
		}
		let prevTime = null;
		for ( let i = 0; i !== nKeys; i ++ ) {
			const currTime = times[ i ];
			if ( typeof currTime === 'number' && isNaN( currTime ) ) {
				console.error( 'THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime );
				valid = false;
				break;
			}
			if ( prevTime !== null && prevTime > currTime ) {
				console.error( 'THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime );
				valid = false;
				break;
			}
			prevTime = currTime;
		}
		if ( values !== undefined ) {
			if ( AnimationUtils.isTypedArray( values ) ) {
				for ( let i = 0, n = values.length; i !== n; ++ i ) {
					const value = values[ i ];
					if ( isNaN( value ) ) {
						console.error( 'THREE.KeyframeTrack: Value is not a valid number.', this, i, value );
						valid = false;
						break;
					}
				}
			}
		}
		return valid;
	},
	optimize: function () {
		const times = AnimationUtils.arraySlice( this.times ),
			values = AnimationUtils.arraySlice( this.values ),
			stride = this.getValueSize(),
			smoothInterpolation = this.getInterpolation() === InterpolateSmooth,
			lastIndex = times.length - 1;
		let writeIndex = 1;
		for ( let i = 1; i < lastIndex; ++ i ) {
			let keep = false;
			const time = times[ i ];
			const timeNext = times[ i + 1 ];
			if ( time !== timeNext && ( i !== 1 || time !== time[ 0 ] ) ) {
				if ( ! smoothInterpolation ) {
					const offset = i * stride,
						offsetP = offset - stride,
						offsetN = offset + stride;
					for ( let j = 0; j !== stride; ++ j ) {
						const value = values[ offset + j ];
						if ( value !== values[ offsetP + j ] ||
							value !== values[ offsetN + j ] ) {
							keep = true;
							break;
						}
					}
				} else {
					keep = true;
				}
			}
			if ( keep ) {
				if ( i !== writeIndex ) {
					times[ writeIndex ] = times[ i ];
					const readOffset = i * stride,
						writeOffset = writeIndex * stride;
					for ( let j = 0; j !== stride; ++ j ) {
						values[ writeOffset + j ] = values[ readOffset + j ];
					}
				}
				++ writeIndex;
			}
		}
		if ( lastIndex > 0 ) {
			times[ writeIndex ] = times[ lastIndex ];
			for ( let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++ j ) {
				values[ writeOffset + j ] = values[ readOffset + j ];
			}
			++ writeIndex;
		}
		if ( writeIndex !== times.length ) {
			this.times = AnimationUtils.arraySlice( times, 0, writeIndex );
			this.values = AnimationUtils.arraySlice( values, 0, writeIndex * stride );
		} else {
			this.times = times;
			this.values = values;
		}
		return this;
	},
	clone: function () {
		const times = AnimationUtils.arraySlice( this.times, 0 );
		const values = AnimationUtils.arraySlice( this.values, 0 );
		const TypedKeyframeTrack = this.constructor;
		const track = new TypedKeyframeTrack( this.name, times, values );
		track.createInterpolant = this.createInterpolant;
		return track;
	}
} );
function BooleanKeyframeTrack( name, times, values ) {
	KeyframeTrack.call( this, name, times, values );
}
BooleanKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
	constructor: BooleanKeyframeTrack,
	ValueTypeName: 'bool',
	ValueBufferType: Array,
	DefaultInterpolation: InterpolateDiscrete,
	InterpolantFactoryMethodLinear: undefined,
	InterpolantFactoryMethodSmooth: undefined
} );
function ColorKeyframeTrack( name, times, values, interpolation ) {
	KeyframeTrack.call( this, name, times, values, interpolation );
}
ColorKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
	constructor: ColorKeyframeTrack,
	ValueTypeName: 'color'
} );
function NumberKeyframeTrack( name, times, values, interpolation ) {
	KeyframeTrack.call( this, name, times, values, interpolation );
}
NumberKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
	constructor: NumberKeyframeTrack,
	ValueTypeName: 'number'
} );
function QuaternionLinearInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
	Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
}
QuaternionLinearInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
	constructor: QuaternionLinearInterpolant,
	interpolate_: function ( i1, t0, t, t1 ) {
		const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,
			alpha = ( t - t0 ) / ( t1 - t0 );
		let offset = i1 * stride;
		for ( let end = offset + stride; offset !== end; offset += 4 ) {
			Quaternion.slerpFlat( result, 0, values, offset - stride, values, offset, alpha );
		}
		return result;
	}
} );
function QuaternionKeyframeTrack( name, times, values, interpolation ) {
	KeyframeTrack.call( this, name, times, values, interpolation );
}
QuaternionKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
	constructor: QuaternionKeyframeTrack,
	ValueTypeName: 'quaternion',
	DefaultInterpolation: InterpolateLinear,
	InterpolantFactoryMethodLinear: function ( result ) {
		return new QuaternionLinearInterpolant( this.times, this.values, this.getValueSize(), result );
	},
	InterpolantFactoryMethodSmooth: undefined
} );
function StringKeyframeTrack( name, times, values, interpolation ) {
	KeyframeTrack.call( this, name, times, values, interpolation );
}
StringKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
	constructor: StringKeyframeTrack,
	ValueTypeName: 'string',
	ValueBufferType: Array,
	DefaultInterpolation: InterpolateDiscrete,
	InterpolantFactoryMethodLinear: undefined,
	InterpolantFactoryMethodSmooth: undefined
} );
function VectorKeyframeTrack( name, times, values, interpolation ) {
	KeyframeTrack.call( this, name, times, values, interpolation );
}
VectorKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
	constructor: VectorKeyframeTrack,
	ValueTypeName: 'vector'
} );
function AnimationClip( name, duration, tracks, blendMode ) {
	this.name = name;
	this.tracks = tracks;
	this.duration = ( duration !== undefined ) ? duration : - 1;
	this.blendMode = ( blendMode !== undefined ) ? blendMode : NormalAnimationBlendMode;
	this.uuid = MathUtils.generateUUID();
	if ( this.duration < 0 ) {
		this.resetDuration();
	}
}
function getTrackTypeForValueTypeName( typeName ) {
	switch ( typeName.toLowerCase() ) {
		case 'scalar':
		case 'double':
		case 'float':
		case 'number':
		case 'integer':
			return NumberKeyframeTrack;
		case 'vector':
		case 'vector2':
		case 'vector3':
		case 'vector4':
			return VectorKeyframeTrack;
		case 'color':
			return ColorKeyframeTrack;
		case 'quaternion':
			return QuaternionKeyframeTrack;
		case 'bool':
		case 'boolean':
			return BooleanKeyframeTrack;
		case 'string':
			return StringKeyframeTrack;
	}
	throw new Error( 'THREE.KeyframeTrack: Unsupported typeName: ' + typeName );
}
function parseKeyframeTrack( json ) {
	if ( json.type === undefined ) {
		throw new Error( 'THREE.KeyframeTrack: track type undefined, can not parse' );
	}
	const trackType = getTrackTypeForValueTypeName( json.type );
	if ( json.times === undefined ) {
		const times = [], values = [];
		AnimationUtils.flattenJSON( json.keys, times, values, 'value' );
		json.times = times;
		json.values = values;
	}
	if ( trackType.parse !== undefined ) {
		return trackType.parse( json );
	} else {
		return new trackType( json.name, json.times, json.values, json.interpolation );
	}
}
Object.assign( AnimationClip, {
	parse: function ( json ) {
		const tracks = [],
			jsonTracks = json.tracks,
			frameTime = 1.0 / ( json.fps || 1.0 );
		for ( let i = 0, n = jsonTracks.length; i !== n; ++ i ) {
			tracks.push( parseKeyframeTrack( jsonTracks[ i ] ).scale( frameTime ) );
		}
		return new AnimationClip( json.name, json.duration, tracks, json.blendMode );
	},
	toJSON: function ( clip ) {
		const tracks = [],
			clipTracks = clip.tracks;
		const json = {
			'name': clip.name,
			'duration': clip.duration,
			'tracks': tracks,
			'uuid': clip.uuid,
			'blendMode': clip.blendMode
		};
		for ( let i = 0, n = clipTracks.length; i !== n; ++ i ) {
			tracks.push( KeyframeTrack.toJSON( clipTracks[ i ] ) );
		}
		return json;
	},
	CreateFromMorphTargetSequence: function ( name, morphTargetSequence, fps, noLoop ) {
		const numMorphTargets = morphTargetSequence.length;
		const tracks = [];
		for ( let i = 0; i < numMorphTargets; i ++ ) {
			let times = [];
			let values = [];
			times.push(
				( i + numMorphTargets - 1 ) % numMorphTargets,
				i,
				( i + 1 ) % numMorphTargets );
			values.push( 0, 1, 0 );
			const order = AnimationUtils.getKeyframeOrder( times );
			times = AnimationUtils.sortedArray( times, 1, order );
			values = AnimationUtils.sortedArray( values, 1, order );
			if ( ! noLoop && times[ 0 ] === 0 ) {
				times.push( numMorphTargets );
				values.push( values[ 0 ] );
			}
			tracks.push(
				new NumberKeyframeTrack(
					'.morphTargetInfluences[' + morphTargetSequence[ i ].name + ']',
					times, values
				).scale( 1.0 / fps ) );
		}
		return new AnimationClip( name, - 1, tracks );
	},
	findByName: function ( objectOrClipArray, name ) {
		let clipArray = objectOrClipArray;
		if ( ! Array.isArray( objectOrClipArray ) ) {
			const o = objectOrClipArray;
			clipArray = o.geometry && o.geometry.animations || o.animations;
		}
		for ( let i = 0; i < clipArray.length; i ++ ) {
			if ( clipArray[ i ].name === name ) {
				return clipArray[ i ];
			}
		}
		return null;
	},
	CreateClipsFromMorphTargetSequences: function ( morphTargets, fps, noLoop ) {
		const animationToMorphTargets = {};
		const pattern = /^([\w-]*?)([\d]+)$/;
		for ( let i = 0, il = morphTargets.length; i < il; i ++ ) {
			const morphTarget = morphTargets[ i ];
			const parts = morphTarget.name.match( pattern );
			if ( parts && parts.length > 1 ) {
				const name = parts[ 1 ];
				let animationMorphTargets = animationToMorphTargets[ name ];
				if ( ! animationMorphTargets ) {
					animationToMorphTargets[ name ] = animationMorphTargets = [];
				}
				animationMorphTargets.push( morphTarget );
			}
		}
		const clips = [];
		for ( const name in animationToMorphTargets ) {
			clips.push( AnimationClip.CreateFromMorphTargetSequence( name, animationToMorphTargets[ name ], fps, noLoop ) );
		}
		return clips;
	},
	parseAnimation: function ( animation, bones ) {
		if ( ! animation ) {
			console.error( 'THREE.AnimationClip: No animation in JSONLoader data.' );
			return null;
		}
		const addNonemptyTrack = function ( trackType, trackName, animationKeys, propertyName, destTracks ) {
			if ( animationKeys.length !== 0 ) {
				const times = [];
				const values = [];
				AnimationUtils.flattenJSON( animationKeys, times, values, propertyName );
				if ( times.length !== 0 ) {
					destTracks.push( new trackType( trackName, times, values ) );
				}
			}
		};
		const tracks = [];
		const clipName = animation.name || 'default';
		const fps = animation.fps || 30;
		const blendMode = animation.blendMode;
		let duration = animation.length || - 1;
		const hierarchyTracks = animation.hierarchy || [];
		for ( let h = 0; h < hierarchyTracks.length; h ++ ) {
			const animationKeys = hierarchyTracks[ h ].keys;
			if ( ! animationKeys || animationKeys.length === 0 ) continue;
			if ( animationKeys[ 0 ].morphTargets ) {
				const morphTargetNames = {};
				let k;
				for ( k = 0; k < animationKeys.length; k ++ ) {
					if ( animationKeys[ k ].morphTargets ) {
						for ( let m = 0; m < animationKeys[ k ].morphTargets.length; m ++ ) {
							morphTargetNames[ animationKeys[ k ].morphTargets[ m ] ] = - 1;
						}
					}
				}
				for ( const morphTargetName in morphTargetNames ) {
					const times = [];
					const values = [];
					for ( let m = 0; m !== animationKeys[ k ].morphTargets.length; ++ m ) {
						const animationKey = animationKeys[ k ];
						times.push( animationKey.time );
						values.push( ( animationKey.morphTarget === morphTargetName ) ? 1 : 0 );
					}
					tracks.push( new NumberKeyframeTrack( '.morphTargetInfluence[' + morphTargetName + ']', times, values ) );
				}
				duration = morphTargetNames.length * ( fps || 1.0 );
			} else {
				const boneName = '.bones[' + bones[ h ].name + ']';
				addNonemptyTrack(
					VectorKeyframeTrack, boneName + '.position',
					animationKeys, 'pos', tracks );
				addNonemptyTrack(
					QuaternionKeyframeTrack, boneName + '.quaternion',
					animationKeys, 'rot', tracks );
				addNonemptyTrack(
					VectorKeyframeTrack, boneName + '.scale',
					animationKeys, 'scl', tracks );
			}
		}
		if ( tracks.length === 0 ) {
			return null;
		}
		const clip = new AnimationClip( clipName, duration, tracks, blendMode );
		return clip;
	}
} );
Object.assign( AnimationClip.prototype, {
	resetDuration: function () {
		const tracks = this.tracks;
		let duration = 0;
		for ( let i = 0, n = tracks.length; i !== n; ++ i ) {
			const track = this.tracks[ i ];
			duration = Math.max( duration, track.times[ track.times.length - 1 ] );
		}
		this.duration = duration;
		return this;
	},
	trim: function () {
		for ( let i = 0; i < this.tracks.length; i ++ ) {
			this.tracks[ i ].trim( 0, this.duration );
		}
		return this;
	},
	validate: function () {
		let valid = true;
		for ( let i = 0; i < this.tracks.length; i ++ ) {
			valid = valid && this.tracks[ i ].validate();
		}
		return valid;
	},
	optimize: function () {
		for ( let i = 0; i < this.tracks.length; i ++ ) {
			this.tracks[ i ].optimize();
		}
		return this;
	},
	clone: function () {
		const tracks = [];
		for ( let i = 0; i < this.tracks.length; i ++ ) {
			tracks.push( this.tracks[ i ].clone() );
		}
		return new AnimationClip( this.name, this.duration, tracks, this.blendMode );
	}
} );
const Cache = {
	enabled: false,
	files: {},
	add: function ( key, file ) {
		if ( this.enabled === false ) return;
		this.files[ key ] = file;
	},
	get: function ( key ) {
		if ( this.enabled === false ) return;
		return this.files[ key ];
	},
	remove: function ( key ) {
		delete this.files[ key ];
	},
	clear: function () {
		this.files = {};
	}
};
function LoadingManager( onLoad, onProgress, onError ) {
	const scope = this;
	let isLoading = false;
	let itemsLoaded = 0;
	let itemsTotal = 0;
	let urlModifier = undefined;
	const handlers = [];
	this.onStart = undefined;
	this.onLoad = onLoad;
	this.onProgress = onProgress;
	this.onError = onError;
	this.itemStart = function ( url ) {
		itemsTotal ++;
		if ( isLoading === false ) {
			if ( scope.onStart !== undefined ) {
				scope.onStart( url, itemsLoaded, itemsTotal );
			}
		}
		isLoading = true;
	};
	this.itemEnd = function ( url ) {
		itemsLoaded ++;
		if ( scope.onProgress !== undefined ) {
			scope.onProgress( url, itemsLoaded, itemsTotal );
		}
		if ( itemsLoaded === itemsTotal ) {
			isLoading = false;
			if ( scope.onLoad !== undefined ) {
				scope.onLoad();
			}
		}
	};
	this.itemError = function ( url ) {
		if ( scope.onError !== undefined ) {
			scope.onError( url );
		}
	};
	this.resolveURL = function ( url ) {
		if ( urlModifier ) {
			return urlModifier( url );
		}
		return url;
	};
	this.setURLModifier = function ( transform ) {
		urlModifier = transform;
		return this;
	};
	this.addHandler = function ( regex, loader ) {
		handlers.push( regex, loader );
		return this;
	};
	this.removeHandler = function ( regex ) {
		const index = handlers.indexOf( regex );
		if ( index !== - 1 ) {
			handlers.splice( index, 2 );
		}
		return this;
	};
	this.getHandler = function ( file ) {
		for ( let i = 0, l = handlers.length; i < l; i += 2 ) {
			const regex = handlers[ i ];
			const loader = handlers[ i + 1 ];
			if ( regex.global ) regex.lastIndex = 0;
			if ( regex.test( file ) ) {
				return loader;
			}
		}
		return null;
	};
}
const DefaultLoadingManager = new LoadingManager();
function Loader( manager ) {
	this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
	this.crossOrigin = 'anonymous';
	this.path = '';
	this.resourcePath = '';
	this.requestHeader = {};
}
Object.assign( Loader.prototype, {
	load: function (  ) {},
	loadAsync: function ( url, onProgress ) {
		const scope = this;
		return new Promise( function ( resolve, reject ) {
			scope.load( url, resolve, onProgress, reject );
		} );
	},
	parse: function (  ) {},
	setCrossOrigin: function ( crossOrigin ) {
		this.crossOrigin = crossOrigin;
		return this;
	},
	setPath: function ( path ) {
		this.path = path;
		return this;
	},
	setResourcePath: function ( resourcePath ) {
		this.resourcePath = resourcePath;
		return this;
	},
	setRequestHeader: function ( requestHeader ) {
		this.requestHeader = requestHeader;
		return this;
	}
} );
const loading = {};
function FileLoader( manager ) {
	Loader.call( this, manager );
}
FileLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: FileLoader,
	load: function ( url, onLoad, onProgress, onError ) {
		if ( url === undefined ) url = '';
		if ( this.path !== undefined ) url = this.path + url;
		url = this.manager.resolveURL( url );
		const scope = this;
		const cached = Cache.get( url );
		if ( cached !== undefined ) {
			scope.manager.itemStart( url );
			setTimeout( function () {
				if ( onLoad ) onLoad( cached );
				scope.manager.itemEnd( url );
			}, 0 );
			return cached;
		}
		if ( loading[ url ] !== undefined ) {
			loading[ url ].push( {
				onLoad: onLoad,
				onProgress: onProgress,
				onError: onError
			} );
			return;
		}
		const dataUriRegex = /^data:(.*?)(;base64)?,(.*)$/;
		const dataUriRegexResult = url.match( dataUriRegex );
		let request;
		if ( dataUriRegexResult ) {
			const mimeType = dataUriRegexResult[ 1 ];
			const isBase64 = !! dataUriRegexResult[ 2 ];
			let data = dataUriRegexResult[ 3 ];
			data = decodeURIComponent( data );
			if ( isBase64 ) data = atob( data );
			try {
				let response;
				const responseType = ( this.responseType || '' ).toLowerCase();
				switch ( responseType ) {
					case 'arraybuffer':
					case 'blob':
						const view = new Uint8Array( data.length );
						for ( let i = 0; i < data.length; i ++ ) {
							view[ i ] = data.charCodeAt( i );
						}
						if ( responseType === 'blob' ) {
							response = new Blob( [ view.buffer ], { type: mimeType } );
						} else {
							response = view.buffer;
						}
						break;
					case 'document':
						const parser = new DOMParser();
						response = parser.parseFromString( data, mimeType );
						break;
					case 'json':
						response = JSON.parse( data );
						break;
					default:
						response = data;
						break;
				}
				setTimeout( function () {
					if ( onLoad ) onLoad( response );
					scope.manager.itemEnd( url );
				}, 0 );
			} catch ( error ) {
				setTimeout( function () {
					if ( onError ) onError( error );
					scope.manager.itemError( url );
					scope.manager.itemEnd( url );
				}, 0 );
			}
		} else {
			loading[ url ] = [];
			loading[ url ].push( {
				onLoad: onLoad,
				onProgress: onProgress,
				onError: onError
			} );
			request = new XMLHttpRequest();
			request.open( 'GET', url, true );
			request.addEventListener( 'load', function ( event ) {
				const response = this.response;
				const callbacks = loading[ url ];
				delete loading[ url ];
				if ( this.status === 200 || this.status === 0 ) {
					if ( this.status === 0 ) console.warn( 'THREE.FileLoader: HTTP Status 0 received.' );
					Cache.add( url, response );
					for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
						const callback = callbacks[ i ];
						if ( callback.onLoad ) callback.onLoad( response );
					}
					scope.manager.itemEnd( url );
				} else {
					for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
						const callback = callbacks[ i ];
						if ( callback.onError ) callback.onError( event );
					}
					scope.manager.itemError( url );
					scope.manager.itemEnd( url );
				}
			}, false );
			request.addEventListener( 'progress', function ( event ) {
				const callbacks = loading[ url ];
				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
					const callback = callbacks[ i ];
					if ( callback.onProgress ) callback.onProgress( event );
				}
			}, false );
			request.addEventListener( 'error', function ( event ) {
				const callbacks = loading[ url ];
				delete loading[ url ];
				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
					const callback = callbacks[ i ];
					if ( callback.onError ) callback.onError( event );
				}
				scope.manager.itemError( url );
				scope.manager.itemEnd( url );
			}, false );
			request.addEventListener( 'abort', function ( event ) {
				const callbacks = loading[ url ];
				delete loading[ url ];
				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
					const callback = callbacks[ i ];
					if ( callback.onError ) callback.onError( event );
				}
				scope.manager.itemError( url );
				scope.manager.itemEnd( url );
			}, false );
			if ( this.responseType !== undefined ) request.responseType = this.responseType;
			if ( this.withCredentials !== undefined ) request.withCredentials = this.withCredentials;
			if ( request.overrideMimeType ) request.overrideMimeType( this.mimeType !== undefined ? this.mimeType : 'text/plain' );
			for ( const header in this.requestHeader ) {
				request.setRequestHeader( header, this.requestHeader[ header ] );
			}
			request.send( null );
		}
		scope.manager.itemStart( url );
		return request;
	},
	setResponseType: function ( value ) {
		this.responseType = value;
		return this;
	},
	setWithCredentials: function ( value ) {
		this.withCredentials = value;
		return this;
	},
	setMimeType: function ( value ) {
		this.mimeType = value;
		return this;
	}
} );
function AnimationLoader( manager ) {
	Loader.call( this, manager );
}
AnimationLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: AnimationLoader,
	load: function ( url, onLoad, onProgress, onError ) {
		const scope = this;
		const loader = new FileLoader( scope.manager );
		loader.setPath( scope.path );
		loader.setRequestHeader( scope.requestHeader );
		loader.load( url, function ( text ) {
			try {
				onLoad( scope.parse( JSON.parse( text ) ) );
			} catch ( e ) {
				if ( onError ) {
					onError( e );
				} else {
					console.error( e );
				}
				scope.manager.itemError( url );
			}
		}, onProgress, onError );
	},
	parse: function ( json ) {
		const animations = [];
		for ( let i = 0; i < json.length; i ++ ) {
			const clip = AnimationClip.parse( json[ i ] );
			animations.push( clip );
		}
		return animations;
	}
} );
function CompressedTextureLoader( manager ) {
	Loader.call( this, manager );
}
CompressedTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: CompressedTextureLoader,
	load: function ( url, onLoad, onProgress, onError ) {
		const scope = this;
		const images = [];
		const texture = new CompressedTexture();
		texture.image = images;
		const loader = new FileLoader( this.manager );
		loader.setPath( this.path );
		loader.setResponseType( 'arraybuffer' );
		loader.setRequestHeader( this.requestHeader );
		let loaded = 0;
		function loadTexture( i ) {
			loader.load( url[ i ], function ( buffer ) {
				const texDatas = scope.parse( buffer, true );
				images[ i ] = {
					width: texDatas.width,
					height: texDatas.height,
					format: texDatas.format,
					mipmaps: texDatas.mipmaps
				};
				loaded += 1;
				if ( loaded === 6 ) {
					if ( texDatas.mipmapCount === 1 )
						texture.minFilter = LinearFilter;
					texture.format = texDatas.format;
					texture.needsUpdate = true;
					if ( onLoad ) onLoad( texture );
				}
			}, onProgress, onError );
		}
		if ( Array.isArray( url ) ) {
			for ( let i = 0, il = url.length; i < il; ++ i ) {
				loadTexture( i );
			}
		} else {
			loader.load( url, function ( buffer ) {
				const texDatas = scope.parse( buffer, true );
				if ( texDatas.isCubemap ) {
					const faces = texDatas.mipmaps.length / texDatas.mipmapCount;
					for ( let f = 0; f < faces; f ++ ) {
						images[ f ] = { mipmaps: [] };
						for ( let i = 0; i < texDatas.mipmapCount; i ++ ) {
							images[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );
							images[ f ].format = texDatas.format;
							images[ f ].width = texDatas.width;
							images[ f ].height = texDatas.height;
						}
					}
				} else {
					texture.image.width = texDatas.width;
					texture.image.height = texDatas.height;
					texture.mipmaps = texDatas.mipmaps;
				}
				if ( texDatas.mipmapCount === 1 ) {
					texture.minFilter = LinearFilter;
				}
				texture.format = texDatas.format;
				texture.needsUpdate = true;
				if ( onLoad ) onLoad( texture );
			}, onProgress, onError );
		}
		return texture;
	}
} );
function ImageLoader( manager ) {
	Loader.call( this, manager );
}
ImageLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: ImageLoader,
	load: function ( url, onLoad, onProgress, onError ) {
		if ( this.path !== undefined ) url = this.path + url;
		url = this.manager.resolveURL( url );
		const scope = this;
		const cached = Cache.get( url );
		if ( cached !== undefined ) {
			scope.manager.itemStart( url );
			setTimeout( function () {
				if ( onLoad ) onLoad( cached );
				scope.manager.itemEnd( url );
			}, 0 );
			return cached;
		}
		const image = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'img' );
		function onImageLoad() {
			image.removeEventListener( 'load', onImageLoad, false );
			image.removeEventListener( 'error', onImageError, false );
			Cache.add( url, this );
			if ( onLoad ) onLoad( this );
			scope.manager.itemEnd( url );
		}
		function onImageError( event ) {
			image.removeEventListener( 'load', onImageLoad, false );
			image.removeEventListener( 'error', onImageError, false );
			if ( onError ) onError( event );
			scope.manager.itemError( url );
			scope.manager.itemEnd( url );
		}
		image.addEventListener( 'load', onImageLoad, false );
		image.addEventListener( 'error', onImageError, false );
		if ( url.substr( 0, 5 ) !== 'data:' ) {
			if ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;
		}
		scope.manager.itemStart( url );
		image.src = url;
		return image;
	}
} );
function CubeTextureLoader( manager ) {
	Loader.call( this, manager );
}
CubeTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: CubeTextureLoader,
	load: function ( urls, onLoad, onProgress, onError ) {
		const texture = new CubeTexture();
		const loader = new ImageLoader( this.manager );
		loader.setCrossOrigin( this.crossOrigin );
		loader.setPath( this.path );
		let loaded = 0;
		function loadTexture( i ) {
			loader.load( urls[ i ], function ( image ) {
				texture.images[ i ] = image;
				loaded ++;
				if ( loaded === 6 ) {
					texture.needsUpdate = true;
					if ( onLoad ) onLoad( texture );
				}
			}, undefined, onError );
		}
		for ( let i = 0; i < urls.length; ++ i ) {
			loadTexture( i );
		}
		return texture;
	}
} );
function DataTextureLoader( manager ) {
	Loader.call( this, manager );
}
DataTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: DataTextureLoader,
	load: function ( url, onLoad, onProgress, onError ) {
		const scope = this;
		const texture = new DataTexture();
		const loader = new FileLoader( this.manager );
		loader.setResponseType( 'arraybuffer' );
		loader.setRequestHeader( this.requestHeader );
		loader.setPath( this.path );
		loader.load( url, function ( buffer ) {
			const texData = scope.parse( buffer );
			if ( ! texData ) return;
			if ( texData.image !== undefined ) {
				texture.image = texData.image;
			} else if ( texData.data !== undefined ) {
				texture.image.width = texData.width;
				texture.image.height = texData.height;
				texture.image.data = texData.data;
			}
			texture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;
			texture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;
			texture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;
			texture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;
			texture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;
			if ( texData.format !== undefined ) {
				texture.format = texData.format;
			}
			if ( texData.type !== undefined ) {
				texture.type = texData.type;
			}
			if ( texData.mipmaps !== undefined ) {
				texture.mipmaps = texData.mipmaps;
				texture.minFilter = LinearMipmapLinearFilter;
			}
			if ( texData.mipmapCount === 1 ) {
				texture.minFilter = LinearFilter;
			}
			texture.needsUpdate = true;
			if ( onLoad ) onLoad( texture, texData );
		}, onProgress, onError );
		return texture;
	}
} );
function TextureLoader( manager ) {
	Loader.call( this, manager );
}
TextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: TextureLoader,
	load: function ( url, onLoad, onProgress, onError ) {
		const texture = new Texture();
		const loader = new ImageLoader( this.manager );
		loader.setCrossOrigin( this.crossOrigin );
		loader.setPath( this.path );
		loader.load( url, function ( image ) {
			texture.image = image;
			const isJPEG = url.search( /\.jpe?g($|\?)/i ) > 0 || url.search( /^data\:image\/jpeg/ ) === 0;
			texture.format = isJPEG ? RGBFormat : RGBAFormat;
			texture.needsUpdate = true;
			if ( onLoad !== undefined ) {
				onLoad( texture );
			}
		}, onProgress, onError );
		return texture;
	}
} );
function Curve() {
	this.type = 'Curve';
	this.arcLengthDivisions = 200;
}
Object.assign( Curve.prototype, {
	getPoint: function (  ) {
		console.warn( 'THREE.Curve: .getPoint() not implemented.' );
		return null;
	},
	getPointAt: function ( u, optionalTarget ) {
		const t = this.getUtoTmapping( u );
		return this.getPoint( t, optionalTarget );
	},
	getPoints: function ( divisions ) {
		if ( divisions === undefined ) divisions = 5;
		const points = [];
		for ( let d = 0; d <= divisions; d ++ ) {
			points.push( this.getPoint( d / divisions ) );
		}
		return points;
	},
	getSpacedPoints: function ( divisions ) {
		if ( divisions === undefined ) divisions = 5;
		const points = [];
		for ( let d = 0; d <= divisions; d ++ ) {
			points.push( this.getPointAt( d / divisions ) );
		}
		return points;
	},
	getLength: function () {
		const lengths = this.getLengths();
		return lengths[ lengths.length - 1 ];
	},
	getLengths: function ( divisions ) {
		if ( divisions === undefined ) divisions = this.arcLengthDivisions;
		if ( this.cacheArcLengths &&
			( this.cacheArcLengths.length === divisions + 1 ) &&
			! this.needsUpdate ) {
			return this.cacheArcLengths;
		}
		this.needsUpdate = false;
		const cache = [];
		let current, last = this.getPoint( 0 );
		let sum = 0;
		cache.push( 0 );
		for ( let p = 1; p <= divisions; p ++ ) {
			current = this.getPoint( p / divisions );
			sum += current.distanceTo( last );
			cache.push( sum );
			last = current;
		}
		this.cacheArcLengths = cache;
		return cache;
	},
	updateArcLengths: function () {
		this.needsUpdate = true;
		this.getLengths();
	},
	getUtoTmapping: function ( u, distance ) {
		const arcLengths = this.getLengths();
		let i = 0;
		const il = arcLengths.length;
		let targetArcLength;
		if ( distance ) {
			targetArcLength = distance;
		} else {
			targetArcLength = u * arcLengths[ il - 1 ];
		}
		let low = 0, high = il - 1, comparison;
		while ( low <= high ) {
			i = Math.floor( low + ( high - low ) / 2 );
			comparison = arcLengths[ i ] - targetArcLength;
			if ( comparison < 0 ) {
				low = i + 1;
			} else if ( comparison > 0 ) {
				high = i - 1;
			} else {
				high = i;
				break;
			}
		}
		i = high;
		if ( arcLengths[ i ] === targetArcLength ) {
			return i / ( il - 1 );
		}
		const lengthBefore = arcLengths[ i ];
		const lengthAfter = arcLengths[ i + 1 ];
		const segmentLength = lengthAfter - lengthBefore;
		const segmentFraction = ( targetArcLength - lengthBefore ) / segmentLength;
		const t = ( i + segmentFraction ) / ( il - 1 );
		return t;
	},
	getTangent: function ( t, optionalTarget ) {
		const delta = 0.0001;
		let t1 = t - delta;
		let t2 = t + delta;
		if ( t1 < 0 ) t1 = 0;
		if ( t2 > 1 ) t2 = 1;
		const pt1 = this.getPoint( t1 );
		const pt2 = this.getPoint( t2 );
		const tangent = optionalTarget || ( ( pt1.isVector2 ) ? new Vector2() : new Vector3() );
		tangent.copy( pt2 ).sub( pt1 ).normalize();
		return tangent;
	},
	getTangentAt: function ( u, optionalTarget ) {
		const t = this.getUtoTmapping( u );
		return this.getTangent( t, optionalTarget );
	},
	computeFrenetFrames: function ( segments, closed ) {
		const normal = new Vector3();
		const tangents = [];
		const normals = [];
		const binormals = [];
		const vec = new Vector3();
		const mat = new Matrix4();
		for ( let i = 0; i <= segments; i ++ ) {
			const u = i / segments;
			tangents[ i ] = this.getTangentAt( u, new Vector3() );
			tangents[ i ].normalize();
		}
		normals[ 0 ] = new Vector3();
		binormals[ 0 ] = new Vector3();
		let min = Number.MAX_VALUE;
		const tx = Math.abs( tangents[ 0 ].x );
		const ty = Math.abs( tangents[ 0 ].y );
		const tz = Math.abs( tangents[ 0 ].z );
		if ( tx <= min ) {
			min = tx;
			normal.set( 1, 0, 0 );
		}
		if ( ty <= min ) {
			min = ty;
			normal.set( 0, 1, 0 );
		}
		if ( tz <= min ) {
			normal.set( 0, 0, 1 );
		}
		vec.crossVectors( tangents[ 0 ], normal ).normalize();
		normals[ 0 ].crossVectors( tangents[ 0 ], vec );
		binormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] );
		for ( let i = 1; i <= segments; i ++ ) {
			normals[ i ] = normals[ i - 1 ].clone();
			binormals[ i ] = binormals[ i - 1 ].clone();
			vec.crossVectors( tangents[ i - 1 ], tangents[ i ] );
			if ( vec.length() > Number.EPSILON ) {
				vec.normalize();
				const theta = Math.acos( MathUtils.clamp( tangents[ i - 1 ].dot( tangents[ i ] ), - 1, 1 ) );
				normals[ i ].applyMatrix4( mat.makeRotationAxis( vec, theta ) );
			}
			binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );
		}
		if ( closed === true ) {
			let theta = Math.acos( MathUtils.clamp( normals[ 0 ].dot( normals[ segments ] ), - 1, 1 ) );
			theta /= segments;
			if ( tangents[ 0 ].dot( vec.crossVectors( normals[ 0 ], normals[ segments ] ) ) > 0 ) {
				theta = - theta;
			}
			for ( let i = 1; i <= segments; i ++ ) {
				normals[ i ].applyMatrix4( mat.makeRotationAxis( tangents[ i ], theta * i ) );
				binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );
			}
		}
		return {
			tangents: tangents,
			normals: normals,
			binormals: binormals
		};
	},
	clone: function () {
		return new this.constructor().copy( this );
	},
	copy: function ( source ) {
		this.arcLengthDivisions = source.arcLengthDivisions;
		return this;
	},
	toJSON: function () {
		const data = {
			metadata: {
				version: 4.5,
				type: 'Curve',
				generator: 'Curve.toJSON'
			}
		};
		data.arcLengthDivisions = this.arcLengthDivisions;
		data.type = this.type;
		return data;
	},
	fromJSON: function ( json ) {
		this.arcLengthDivisions = json.arcLengthDivisions;
		return this;
	}
} );
function EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {
	Curve.call( this );
	this.type = 'EllipseCurve';
	this.aX = aX || 0;
	this.aY = aY || 0;
	this.xRadius = xRadius || 1;
	this.yRadius = yRadius || 1;
	this.aStartAngle = aStartAngle || 0;
	this.aEndAngle = aEndAngle || 2 * Math.PI;
	this.aClockwise = aClockwise || false;
	this.aRotation = aRotation || 0;
}
EllipseCurve.prototype = Object.create( Curve.prototype );
EllipseCurve.prototype.constructor = EllipseCurve;
EllipseCurve.prototype.isEllipseCurve = true;
EllipseCurve.prototype.getPoint = function ( t, optionalTarget ) {
	const point = optionalTarget || new Vector2();
	const twoPi = Math.PI * 2;
	let deltaAngle = this.aEndAngle - this.aStartAngle;
	const samePoints = Math.abs( deltaAngle ) < Number.EPSILON;
	while ( deltaAngle < 0 ) deltaAngle += twoPi;
	while ( deltaAngle > twoPi ) deltaAngle -= twoPi;
	if ( deltaAngle < Number.EPSILON ) {
		if ( samePoints ) {
			deltaAngle = 0;
		} else {
			deltaAngle = twoPi;
		}
	}
	if ( this.aClockwise === true && ! samePoints ) {
		if ( deltaAngle === twoPi ) {
			deltaAngle = - twoPi;
		} else {
			deltaAngle = deltaAngle - twoPi;
		}
	}
	const angle = this.aStartAngle + t * deltaAngle;
	let x = this.aX + this.xRadius * Math.cos( angle );
	let y = this.aY + this.yRadius * Math.sin( angle );
	if ( this.aRotation !== 0 ) {
		const cos = Math.cos( this.aRotation );
		const sin = Math.sin( this.aRotation );
		const tx = x - this.aX;
		const ty = y - this.aY;
		x = tx * cos - ty * sin + this.aX;
		y = tx * sin + ty * cos + this.aY;
	}
	return point.set( x, y );
};
EllipseCurve.prototype.copy = function ( source ) {
	Curve.prototype.copy.call( this, source );
	this.aX = source.aX;
	this.aY = source.aY;
	this.xRadius = source.xRadius;
	this.yRadius = source.yRadius;
	this.aStartAngle = source.aStartAngle;
	this.aEndAngle = source.aEndAngle;
	this.aClockwise = source.aClockwise;
	this.aRotation = source.aRotation;
	return this;
};
EllipseCurve.prototype.toJSON = function () {
	const data = Curve.prototype.toJSON.call( this );
	data.aX = this.aX;
	data.aY = this.aY;
	data.xRadius = this.xRadius;
	data.yRadius = this.yRadius;
	data.aStartAngle = this.aStartAngle;
	data.aEndAngle = this.aEndAngle;
	data.aClockwise = this.aClockwise;
	data.aRotation = this.aRotation;
	return data;
};
EllipseCurve.prototype.fromJSON = function ( json ) {
	Curve.prototype.fromJSON.call( this, json );
	this.aX = json.aX;
	this.aY = json.aY;
	this.xRadius = json.xRadius;
	this.yRadius = json.yRadius;
	this.aStartAngle = json.aStartAngle;
	this.aEndAngle = json.aEndAngle;
	this.aClockwise = json.aClockwise;
	this.aRotation = json.aRotation;
	return this;
};
function ArcCurve( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
	EllipseCurve.call( this, aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );
	this.type = 'ArcCurve';
}
ArcCurve.prototype = Object.create( EllipseCurve.prototype );
ArcCurve.prototype.constructor = ArcCurve;
ArcCurve.prototype.isArcCurve = true;
function CubicPoly() {
	let c0 = 0, c1 = 0, c2 = 0, c3 = 0;
	function init( x0, x1, t0, t1 ) {
		c0 = x0;
		c1 = t0;
		c2 = - 3 * x0 + 3 * x1 - 2 * t0 - t1;
		c3 = 2 * x0 - 2 * x1 + t0 + t1;
	}
	return {
		initCatmullRom: function ( x0, x1, x2, x3, tension ) {
			init( x1, x2, tension * ( x2 - x0 ), tension * ( x3 - x1 ) );
		},
		initNonuniformCatmullRom: function ( x0, x1, x2, x3, dt0, dt1, dt2 ) {
			let t1 = ( x1 - x0 ) / dt0 - ( x2 - x0 ) / ( dt0 + dt1 ) + ( x2 - x1 ) / dt1;
			let t2 = ( x2 - x1 ) / dt1 - ( x3 - x1 ) / ( dt1 + dt2 ) + ( x3 - x2 ) / dt2;
			t1 *= dt1;
			t2 *= dt1;
			init( x1, x2, t1, t2 );
		},
		calc: function ( t ) {
			const t2 = t * t;
			const t3 = t2 * t;
			return c0 + c1 * t + c2 * t2 + c3 * t3;
		}
	};
}
const tmp = new Vector3();
const px = new CubicPoly(), py = new CubicPoly(), pz = new CubicPoly();
function CatmullRomCurve3( points, closed, curveType, tension ) {
	Curve.call( this );
	this.type = 'CatmullRomCurve3';
	this.points = points || [];
	this.closed = closed || false;
	this.curveType = curveType || 'centripetal';
	this.tension = ( tension !== undefined ) ? tension : 0.5;
}
CatmullRomCurve3.prototype = Object.create( Curve.prototype );
CatmullRomCurve3.prototype.constructor = CatmullRomCurve3;
CatmullRomCurve3.prototype.isCatmullRomCurve3 = true;
CatmullRomCurve3.prototype.getPoint = function ( t, optionalTarget ) {
	const point = optionalTarget || new Vector3();
	const points = this.points;
	const l = points.length;
	const p = ( l - ( this.closed ? 0 : 1 ) ) * t;
	let intPoint = Math.floor( p );
	let weight = p - intPoint;
	if ( this.closed ) {
		intPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / l ) + 1 ) * l;
	} else if ( weight === 0 && intPoint === l - 1 ) {
		intPoint = l - 2;
		weight = 1;
	}
	let p0, p3;
	if ( this.closed || intPoint > 0 ) {
		p0 = points[ ( intPoint - 1 ) % l ];
	} else {
		tmp.subVectors( points[ 0 ], points[ 1 ] ).add( points[ 0 ] );
		p0 = tmp;
	}
	const p1 = points[ intPoint % l ];
	const p2 = points[ ( intPoint + 1 ) % l ];
	if ( this.closed || intPoint + 2 < l ) {
		p3 = points[ ( intPoint + 2 ) % l ];
	} else {
		tmp.subVectors( points[ l - 1 ], points[ l - 2 ] ).add( points[ l - 1 ] );
		p3 = tmp;
	}
	if ( this.curveType === 'centripetal' || this.curveType === 'chordal' ) {
		const pow = this.curveType === 'chordal' ? 0.5 : 0.25;
		let dt0 = Math.pow( p0.distanceToSquared( p1 ), pow );
		let dt1 = Math.pow( p1.distanceToSquared( p2 ), pow );
		let dt2 = Math.pow( p2.distanceToSquared( p3 ), pow );
		if ( dt1 < 1e-4 ) dt1 = 1.0;
		if ( dt0 < 1e-4 ) dt0 = dt1;
		if ( dt2 < 1e-4 ) dt2 = dt1;
		px.initNonuniformCatmullRom( p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2 );
		py.initNonuniformCatmullRom( p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2 );
		pz.initNonuniformCatmullRom( p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2 );
	} else if ( this.curveType === 'catmullrom' ) {
		px.initCatmullRom( p0.x, p1.x, p2.x, p3.x, this.tension );
		py.initCatmullRom( p0.y, p1.y, p2.y, p3.y, this.tension );
		pz.initCatmullRom( p0.z, p1.z, p2.z, p3.z, this.tension );
	}
	point.set(
		px.calc( weight ),
		py.calc( weight ),
		pz.calc( weight )
	);
	return point;
};
CatmullRomCurve3.prototype.copy = function ( source ) {
	Curve.prototype.copy.call( this, source );
	this.points = [];
	for ( let i = 0, l = source.points.length; i < l; i ++ ) {
		const point = source.points[ i ];
		this.points.push( point.clone() );
	}
	this.closed = source.closed;
	this.curveType = source.curveType;
	this.tension = source.tension;
	return this;
};
CatmullRomCurve3.prototype.toJSON = function () {
	const data = Curve.prototype.toJSON.call( this );
	data.points = [];
	for ( let i = 0, l = this.points.length; i < l; i ++ ) {
		const point = this.points[ i ];
		data.points.push( point.toArray() );
	}
	data.closed = this.closed;
	data.curveType = this.curveType;
	data.tension = this.tension;
	return data;
};
CatmullRomCurve3.prototype.fromJSON = function ( json ) {
	Curve.prototype.fromJSON.call( this, json );
	this.points = [];
	for ( let i = 0, l = json.points.length; i < l; i ++ ) {
		const point = json.points[ i ];
		this.points.push( new Vector3().fromArray( point ) );
	}
	this.closed = json.closed;
	this.curveType = json.curveType;
	this.tension = json.tension;
	return this;
};
function CatmullRom( t, p0, p1, p2, p3 ) {
	const v0 = ( p2 - p0 ) * 0.5;
	const v1 = ( p3 - p1 ) * 0.5;
	const t2 = t * t;
	const t3 = t * t2;
	return ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;
}
function QuadraticBezierP0( t, p ) {
	const k = 1 - t;
	return k * k * p;
}
function QuadraticBezierP1( t, p ) {
	return 2 * ( 1 - t ) * t * p;
}
function QuadraticBezierP2( t, p ) {
	return t * t * p;
}
function QuadraticBezier( t, p0, p1, p2 ) {
	return QuadraticBezierP0( t, p0 ) + QuadraticBezierP1( t, p1 ) +
		QuadraticBezierP2( t, p2 );
}
function CubicBezierP0( t, p ) {
	const k = 1 - t;
	return k * k * k * p;
}
function CubicBezierP1( t, p ) {
	const k = 1 - t;
	return 3 * k * k * t * p;
}
function CubicBezierP2( t, p ) {
	return 3 * ( 1 - t ) * t * t * p;
}
function CubicBezierP3( t, p ) {
	return t * t * t * p;
}
function CubicBezier( t, p0, p1, p2, p3 ) {
	return CubicBezierP0( t, p0 ) + CubicBezierP1( t, p1 ) + CubicBezierP2( t, p2 ) +
		CubicBezierP3( t, p3 );
}
function CubicBezierCurve( v0, v1, v2, v3 ) {
	Curve.call( this );
	this.type = 'CubicBezierCurve';
	this.v0 = v0 || new Vector2();
	this.v1 = v1 || new Vector2();
	this.v2 = v2 || new Vector2();
	this.v3 = v3 || new Vector2();
}
CubicBezierCurve.prototype = Object.create( Curve.prototype );
CubicBezierCurve.prototype.constructor = CubicBezierCurve;
CubicBezierCurve.prototype.isCubicBezierCurve = true;
CubicBezierCurve.prototype.getPoint = function ( t, optionalTarget ) {
	const point = optionalTarget || new Vector2();
	const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
	point.set(
		CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
		CubicBezier( t, v0.y, v1.y, v2.y, v3.y )
	);
	return point;
};
CubicBezierCurve.prototype.copy = function ( source ) {
	Curve.prototype.copy.call( this, source );
	this.v0.copy( source.v0 );
	this.v1.copy( source.v1 );
	this.v2.copy( source.v2 );
	this.v3.copy( source.v3 );
	return this;
};
CubicBezierCurve.prototype.toJSON = function () {
	const data = Curve.prototype.toJSON.call( this );
	data.v0 = this.v0.toArray();
	data.v1 = this.v1.toArray();
	data.v2 = this.v2.toArray();
	data.v3 = this.v3.toArray();
	return data;
};
CubicBezierCurve.prototype.fromJSON = function ( json ) {
	Curve.prototype.fromJSON.call( this, json );
	this.v0.fromArray( json.v0 );
	this.v1.fromArray( json.v1 );
	this.v2.fromArray( json.v2 );
	this.v3.fromArray( json.v3 );
	return this;
};
function CubicBezierCurve3( v0, v1, v2, v3 ) {
	Curve.call( this );
	this.type = 'CubicBezierCurve3';
	this.v0 = v0 || new Vector3();
	this.v1 = v1 || new Vector3();
	this.v2 = v2 || new Vector3();
	this.v3 = v3 || new Vector3();
}
CubicBezierCurve3.prototype = Object.create( Curve.prototype );
CubicBezierCurve3.prototype.constructor = CubicBezierCurve3;
CubicBezierCurve3.prototype.isCubicBezierCurve3 = true;
CubicBezierCurve3.prototype.getPoint = function ( t, optionalTarget ) {
	const point = optionalTarget || new Vector3();
	const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
	point.set(
		CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
		CubicBezier( t, v0.y, v1.y, v2.y, v3.y ),
		CubicBezier( t, v0.z, v1.z, v2.z, v3.z )
	);
	return point;
};
CubicBezierCurve3.prototype.copy = function ( source ) {
	Curve.prototype.copy.call( this, source );
	this.v0.copy( source.v0 );
	this.v1.copy( source.v1 );
	this.v2.copy( source.v2 );
	this.v3.copy( source.v3 );
	return this;
};
CubicBezierCurve3.prototype.toJSON = function () {
	const data = Curve.prototype.toJSON.call( this );
	data.v0 = this.v0.toArray();
	data.v1 = this.v1.toArray();
	data.v2 = this.v2.toArray();
	data.v3 = this.v3.toArray();
	return data;
};
CubicBezierCurve3.prototype.fromJSON = function ( json ) {
	Curve.prototype.fromJSON.call( this, json );
	this.v0.fromArray( json.v0 );
	this.v1.fromArray( json.v1 );
	this.v2.fromArray( json.v2 );
	this.v3.fromArray( json.v3 );
	return this;
};
function LineCurve( v1, v2 ) {
	Curve.call( this );
	this.type = 'LineCurve';
	this.v1 = v1 || new Vector2();
	this.v2 = v2 || new Vector2();
}
LineCurve.prototype = Object.create( Curve.prototype );
LineCurve.prototype.constructor = LineCurve;
LineCurve.prototype.isLineCurve = true;
LineCurve.prototype.getPoint = function ( t, optionalTarget ) {
	const point = optionalTarget || new Vector2();
	if ( t === 1 ) {
		point.copy( this.v2 );
	} else {
		point.copy( this.v2 ).sub( this.v1 );
		point.multiplyScalar( t ).add( this.v1 );
	}
	return point;
};
LineCurve.prototype.getPointAt = function ( u, optionalTarget ) {
	return this.getPoint( u, optionalTarget );
};
LineCurve.prototype.getTangent = function ( t, optionalTarget ) {
	const tangent = optionalTarget || new Vector2();
	tangent.copy( this.v2 ).sub( this.v1 ).normalize();
	return tangent;
};
LineCurve.prototype.copy = function ( source ) {
	Curve.prototype.copy.call( this, source );
	this.v1.copy( source.v1 );
	this.v2.copy( source.v2 );
	return this;
};
LineCurve.prototype.toJSON = function () {
	const data = Curve.prototype.toJSON.call( this );
	data.v1 = this.v1.toArray();
	data.v2 = this.v2.toArray();
	return data;
};
LineCurve.prototype.fromJSON = function ( json ) {
	Curve.prototype.fromJSON.call( this, json );
	this.v1.fromArray( json.v1 );
	this.v2.fromArray( json.v2 );
	return this;
};
function LineCurve3( v1, v2 ) {
	Curve.call( this );
	this.type = 'LineCurve3';
	this.v1 = v1 || new Vector3();
	this.v2 = v2 || new Vector3();
}
LineCurve3.prototype = Object.create( Curve.prototype );
LineCurve3.prototype.constructor = LineCurve3;
LineCurve3.prototype.isLineCurve3 = true;
LineCurve3.prototype.getPoint = function ( t, optionalTarget ) {
	const point = optionalTarget || new Vector3();
	if ( t === 1 ) {
		point.copy( this.v2 );
	} else {
		point.copy( this.v2 ).sub( this.v1 );
		point.multiplyScalar( t ).add( this.v1 );
	}
	return point;
};
LineCurve3.prototype.getPointAt = function ( u, optionalTarget ) {
	return this.getPoint( u, optionalTarget );
};
LineCurve3.prototype.copy = function ( source ) {
	Curve.prototype.copy.call( this, source );
	this.v1.copy( source.v1 );
	this.v2.copy( source.v2 );
	return this;
};
LineCurve3.prototype.toJSON = function () {
	const data = Curve.prototype.toJSON.call( this );
	data.v1 = this.v1.toArray();
	data.v2 = this.v2.toArray();
	return data;
};
LineCurve3.prototype.fromJSON = function ( json ) {
	Curve.prototype.fromJSON.call( this, json );
	this.v1.fromArray( json.v1 );
	this.v2.fromArray( json.v2 );
	return this;
};
function QuadraticBezierCurve( v0, v1, v2 ) {
	Curve.call( this );
	this.type = 'QuadraticBezierCurve';
	this.v0 = v0 || new Vector2();
	this.v1 = v1 || new Vector2();
	this.v2 = v2 || new Vector2();
}
QuadraticBezierCurve.prototype = Object.create( Curve.prototype );
QuadraticBezierCurve.prototype.constructor = QuadraticBezierCurve;
QuadraticBezierCurve.prototype.isQuadraticBezierCurve = true;
QuadraticBezierCurve.prototype.getPoint = function ( t, optionalTarget ) {
	const point = optionalTarget || new Vector2();
	const v0 = this.v0, v1 = this.v1, v2 = this.v2;
	point.set(
		QuadraticBezier( t, v0.x, v1.x, v2.x ),
		QuadraticBezier( t, v0.y, v1.y, v2.y )
	);
	return point;
};
QuadraticBezierCurve.prototype.copy = function ( source ) {
	Curve.prototype.copy.call( this, source );
	this.v0.copy( source.v0 );
	this.v1.copy( source.v1 );
	this.v2.copy( source.v2 );
	return this;
};
QuadraticBezierCurve.prototype.toJSON = function () {
	const data = Curve.prototype.toJSON.call( this );
	data.v0 = this.v0.toArray();
	data.v1 = this.v1.toArray();
	data.v2 = this.v2.toArray();
	return data;
};
QuadraticBezierCurve.prototype.fromJSON = function ( json ) {
	Curve.prototype.fromJSON.call( this, json );
	this.v0.fromArray( json.v0 );
	this.v1.fromArray( json.v1 );
	this.v2.fromArray( json.v2 );
	return this;
};
function QuadraticBezierCurve3( v0, v1, v2 ) {
	Curve.call( this );
	this.type = 'QuadraticBezierCurve3';
	this.v0 = v0 || new Vector3();
	this.v1 = v1 || new Vector3();
	this.v2 = v2 || new Vector3();
}
QuadraticBezierCurve3.prototype = Object.create( Curve.prototype );
QuadraticBezierCurve3.prototype.constructor = QuadraticBezierCurve3;
QuadraticBezierCurve3.prototype.isQuadraticBezierCurve3 = true;
QuadraticBezierCurve3.prototype.getPoint = function ( t, optionalTarget ) {
	const point = optionalTarget || new Vector3();
	const v0 = this.v0, v1 = this.v1, v2 = this.v2;
	point.set(
		QuadraticBezier( t, v0.x, v1.x, v2.x ),
		QuadraticBezier( t, v0.y, v1.y, v2.y ),
		QuadraticBezier( t, v0.z, v1.z, v2.z )
	);
	return point;
};
QuadraticBezierCurve3.prototype.copy = function ( source ) {
	Curve.prototype.copy.call( this, source );
	this.v0.copy( source.v0 );
	this.v1.copy( source.v1 );
	this.v2.copy( source.v2 );
	return this;
};
QuadraticBezierCurve3.prototype.toJSON = function () {
	const data = Curve.prototype.toJSON.call( this );
	data.v0 = this.v0.toArray();
	data.v1 = this.v1.toArray();
	data.v2 = this.v2.toArray();
	return data;
};
QuadraticBezierCurve3.prototype.fromJSON = function ( json ) {
	Curve.prototype.fromJSON.call( this, json );
	this.v0.fromArray( json.v0 );
	this.v1.fromArray( json.v1 );
	this.v2.fromArray( json.v2 );
	return this;
};
function SplineCurve( points ) {
	Curve.call( this );
	this.type = 'SplineCurve';
	this.points = points || [];
}
SplineCurve.prototype = Object.create( Curve.prototype );
SplineCurve.prototype.constructor = SplineCurve;
SplineCurve.prototype.isSplineCurve = true;
SplineCurve.prototype.getPoint = function ( t, optionalTarget ) {
	const point = optionalTarget || new Vector2();
	const points = this.points;
	const p = ( points.length - 1 ) * t;
	const intPoint = Math.floor( p );
	const weight = p - intPoint;
	const p0 = points[ intPoint === 0 ? intPoint : intPoint - 1 ];
	const p1 = points[ intPoint ];
	const p2 = points[ intPoint > points.length - 2 ? points.length - 1 : intPoint + 1 ];
	const p3 = points[ intPoint > points.length - 3 ? points.length - 1 : intPoint + 2 ];
	point.set(
		CatmullRom( weight, p0.x, p1.x, p2.x, p3.x ),
		CatmullRom( weight, p0.y, p1.y, p2.y, p3.y )
	);
	return point;
};
SplineCurve.prototype.copy = function ( source ) {
	Curve.prototype.copy.call( this, source );
	this.points = [];
	for ( let i = 0, l = source.points.length; i < l; i ++ ) {
		const point = source.points[ i ];
		this.points.push( point.clone() );
	}
	return this;
};
SplineCurve.prototype.toJSON = function () {
	const data = Curve.prototype.toJSON.call( this );
	data.points = [];
	for ( let i = 0, l = this.points.length; i < l; i ++ ) {
		const point = this.points[ i ];
		data.points.push( point.toArray() );
	}
	return data;
};
SplineCurve.prototype.fromJSON = function ( json ) {
	Curve.prototype.fromJSON.call( this, json );
	this.points = [];
	for ( let i = 0, l = json.points.length; i < l; i ++ ) {
		const point = json.points[ i ];
		this.points.push( new Vector2().fromArray( point ) );
	}
	return this;
};
var Curves = Object.freeze({
	__proto__: null,
	ArcCurve: ArcCurve,
	CatmullRomCurve3: CatmullRomCurve3,
	CubicBezierCurve: CubicBezierCurve,
	CubicBezierCurve3: CubicBezierCurve3,
	EllipseCurve: EllipseCurve,
	LineCurve: LineCurve,
	LineCurve3: LineCurve3,
	QuadraticBezierCurve: QuadraticBezierCurve,
	QuadraticBezierCurve3: QuadraticBezierCurve3,
	SplineCurve: SplineCurve
});
function CurvePath() {
	Curve.call( this );
	this.type = 'CurvePath';
	this.curves = [];
	this.autoClose = false;
}
CurvePath.prototype = Object.assign( Object.create( Curve.prototype ), {
	constructor: CurvePath,
	add: function ( curve ) {
		this.curves.push( curve );
	},
	closePath: function () {
		const startPoint = this.curves[ 0 ].getPoint( 0 );
		const endPoint = this.curves[ this.curves.length - 1 ].getPoint( 1 );
		if ( ! startPoint.equals( endPoint ) ) {
			this.curves.push( new LineCurve( endPoint, startPoint ) );
		}
	},
	getPoint: function ( t ) {
		const d = t * this.getLength();
		const curveLengths = this.getCurveLengths();
		let i = 0;
		while ( i < curveLengths.length ) {
			if ( curveLengths[ i ] >= d ) {
				const diff = curveLengths[ i ] - d;
				const curve = this.curves[ i ];
				const segmentLength = curve.getLength();
				const u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;
				return curve.getPointAt( u );
			}
			i ++;
		}
		return null;
	},
	getLength: function () {
		const lens = this.getCurveLengths();
		return lens[ lens.length - 1 ];
	},
	updateArcLengths: function () {
		this.needsUpdate = true;
		this.cacheLengths = null;
		this.getCurveLengths();
	},
	getCurveLengths: function () {
		if ( this.cacheLengths && this.cacheLengths.length === this.curves.length ) {
			return this.cacheLengths;
		}
		const lengths = [];
		let sums = 0;
		for ( let i = 0, l = this.curves.length; i < l; i ++ ) {
			sums += this.curves[ i ].getLength();
			lengths.push( sums );
		}
		this.cacheLengths = lengths;
		return lengths;
	},
	getSpacedPoints: function ( divisions ) {
		if ( divisions === undefined ) divisions = 40;
		const points = [];
		for ( let i = 0; i <= divisions; i ++ ) {
			points.push( this.getPoint( i / divisions ) );
		}
		if ( this.autoClose ) {
			points.push( points[ 0 ] );
		}
		return points;
	},
	getPoints: function ( divisions ) {
		divisions = divisions || 12;
		const points = [];
		let last;
		for ( let i = 0, curves = this.curves; i < curves.length; i ++ ) {
			const curve = curves[ i ];
			const resolution = ( curve && curve.isEllipseCurve ) ? divisions * 2
				: ( curve && ( curve.isLineCurve || curve.isLineCurve3 ) ) ? 1
					: ( curve && curve.isSplineCurve ) ? divisions * curve.points.length
						: divisions;
			const pts = curve.getPoints( resolution );
			for ( let j = 0; j < pts.length; j ++ ) {
				const point = pts[ j ];
				if ( last && last.equals( point ) ) continue;
				points.push( point );
				last = point;
			}
		}
		if ( this.autoClose && points.length > 1 && ! points[ points.length - 1 ].equals( points[ 0 ] ) ) {
			points.push( points[ 0 ] );
		}
		return points;
	},
	copy: function ( source ) {
		Curve.prototype.copy.call( this, source );
		this.curves = [];
		for ( let i = 0, l = source.curves.length; i < l; i ++ ) {
			const curve = source.curves[ i ];
			this.curves.push( curve.clone() );
		}
		this.autoClose = source.autoClose;
		return this;
	},
	toJSON: function () {
		const data = Curve.prototype.toJSON.call( this );
		data.autoClose = this.autoClose;
		data.curves = [];
		for ( let i = 0, l = this.curves.length; i < l; i ++ ) {
			const curve = this.curves[ i ];
			data.curves.push( curve.toJSON() );
		}
		return data;
	},
	fromJSON: function ( json ) {
		Curve.prototype.fromJSON.call( this, json );
		this.autoClose = json.autoClose;
		this.curves = [];
		for ( let i = 0, l = json.curves.length; i < l; i ++ ) {
			const curve = json.curves[ i ];
			this.curves.push( new Curves[ curve.type ]().fromJSON( curve ) );
		}
		return this;
	}
} );
function Path( points ) {
	CurvePath.call( this );
	this.type = 'Path';
	this.currentPoint = new Vector2();
	if ( points ) {
		this.setFromPoints( points );
	}
}
Path.prototype = Object.assign( Object.create( CurvePath.prototype ), {
	constructor: Path,
	setFromPoints: function ( points ) {
		this.moveTo( points[ 0 ].x, points[ 0 ].y );
		for ( let i = 1, l = points.length; i < l; i ++ ) {
			this.lineTo( points[ i ].x, points[ i ].y );
		}
		return this;
	},
	moveTo: function ( x, y ) {
		this.currentPoint.set( x, y );
		return this;
	},
	lineTo: function ( x, y ) {
		const curve = new LineCurve( this.currentPoint.clone(), new Vector2( x, y ) );
		this.curves.push( curve );
		this.currentPoint.set( x, y );
		return this;
	},
	quadraticCurveTo: function ( aCPx, aCPy, aX, aY ) {
		const curve = new QuadraticBezierCurve(
			this.currentPoint.clone(),
			new Vector2( aCPx, aCPy ),
			new Vector2( aX, aY )
		);
		this.curves.push( curve );
		this.currentPoint.set( aX, aY );
		return this;
	},
	bezierCurveTo: function ( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {
		const curve = new CubicBezierCurve(
			this.currentPoint.clone(),
			new Vector2( aCP1x, aCP1y ),
			new Vector2( aCP2x, aCP2y ),
			new Vector2( aX, aY )
		);
		this.curves.push( curve );
		this.currentPoint.set( aX, aY );
		return this;
	},
	splineThru: function ( pts  ) {
		const npts = [ this.currentPoint.clone() ].concat( pts );
		const curve = new SplineCurve( npts );
		this.curves.push( curve );
		this.currentPoint.copy( pts[ pts.length - 1 ] );
		return this;
	},
	arc: function ( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
		const x0 = this.currentPoint.x;
		const y0 = this.currentPoint.y;
		this.absarc( aX + x0, aY + y0, aRadius,
			aStartAngle, aEndAngle, aClockwise );
		return this;
	},
	absarc: function ( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
		this.absellipse( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );
		return this;
	},
	ellipse: function ( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {
		const x0 = this.currentPoint.x;
		const y0 = this.currentPoint.y;
		this.absellipse( aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );
		return this;
	},
	absellipse: function ( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {
		const curve = new EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );
		if ( this.curves.length > 0 ) {
			const firstPoint = curve.getPoint( 0 );
			if ( ! firstPoint.equals( this.currentPoint ) ) {
				this.lineTo( firstPoint.x, firstPoint.y );
			}
		}
		this.curves.push( curve );
		const lastPoint = curve.getPoint( 1 );
		this.currentPoint.copy( lastPoint );
		return this;
	},
	copy: function ( source ) {
		CurvePath.prototype.copy.call( this, source );
		this.currentPoint.copy( source.currentPoint );
		return this;
	},
	toJSON: function () {
		const data = CurvePath.prototype.toJSON.call( this );
		data.currentPoint = this.currentPoint.toArray();
		return data;
	},
	fromJSON: function ( json ) {
		CurvePath.prototype.fromJSON.call( this, json );
		this.currentPoint.fromArray( json.currentPoint );
		return this;
	}
} );
function Shape( points ) {
	Path.call( this, points );
	this.uuid = MathUtils.generateUUID();
	this.type = 'Shape';
	this.holes = [];
}
Shape.prototype = Object.assign( Object.create( Path.prototype ), {
	constructor: Shape,
	getPointsHoles: function ( divisions ) {
		const holesPts = [];
		for ( let i = 0, l = this.holes.length; i < l; i ++ ) {
			holesPts[ i ] = this.holes[ i ].getPoints( divisions );
		}
		return holesPts;
	},
	extractPoints: function ( divisions ) {
		return {
			shape: this.getPoints( divisions ),
			holes: this.getPointsHoles( divisions )
		};
	},
	copy: function ( source ) {
		Path.prototype.copy.call( this, source );
		this.holes = [];
		for ( let i = 0, l = source.holes.length; i < l; i ++ ) {
			const hole = source.holes[ i ];
			this.holes.push( hole.clone() );
		}
		return this;
	},
	toJSON: function () {
		const data = Path.prototype.toJSON.call( this );
		data.uuid = this.uuid;
		data.holes = [];
		for ( let i = 0, l = this.holes.length; i < l; i ++ ) {
			const hole = this.holes[ i ];
			data.holes.push( hole.toJSON() );
		}
		return data;
	},
	fromJSON: function ( json ) {
		Path.prototype.fromJSON.call( this, json );
		this.uuid = json.uuid;
		this.holes = [];
		for ( let i = 0, l = json.holes.length; i < l; i ++ ) {
			const hole = json.holes[ i ];
			this.holes.push( new Path().fromJSON( hole ) );
		}
		return this;
	}
} );
function Light( color, intensity ) {
	Object3D.call( this );
	this.type = 'Light';
	this.color = new Color( color );
	this.intensity = intensity !== undefined ? intensity : 1;
	this.receiveShadow = undefined;
}
Light.prototype = Object.assign( Object.create( Object3D.prototype ), {
	constructor: Light,
	isLight: true,
	copy: function ( source ) {
		Object3D.prototype.copy.call( this, source );
		this.color.copy( source.color );
		this.intensity = source.intensity;
		return this;
	},
	toJSON: function ( meta ) {
		const data = Object3D.prototype.toJSON.call( this, meta );
		data.object.color = this.color.getHex();
		data.object.intensity = this.intensity;
		if ( this.groundColor !== undefined ) data.object.groundColor = this.groundColor.getHex();
		if ( this.distance !== undefined ) data.object.distance = this.distance;
		if ( this.angle !== undefined ) data.object.angle = this.angle;
		if ( this.decay !== undefined ) data.object.decay = this.decay;
		if ( this.penumbra !== undefined ) data.object.penumbra = this.penumbra;
		if ( this.shadow !== undefined ) data.object.shadow = this.shadow.toJSON();
		return data;
	}
} );
function HemisphereLight( skyColor, groundColor, intensity ) {
	Light.call( this, skyColor, intensity );
	this.type = 'HemisphereLight';
	this.castShadow = undefined;
	this.position.copy( Object3D.DefaultUp );
	this.updateMatrix();
	this.groundColor = new Color( groundColor );
}
HemisphereLight.prototype = Object.assign( Object.create( Light.prototype ), {
	constructor: HemisphereLight,
	isHemisphereLight: true,
	copy: function ( source ) {
		Light.prototype.copy.call( this, source );
		this.groundColor.copy( source.groundColor );
		return this;
	}
} );
function LightShadow( camera ) {
	this.camera = camera;
	this.bias = 0;
	this.normalBias = 0;
	this.radius = 1;
	this.mapSize = new Vector2( 512, 512 );
	this.map = null;
	this.mapPass = null;
	this.matrix = new Matrix4();
	this.autoUpdate = true;
	this.needsUpdate = false;
	this._frustum = new Frustum();
	this._frameExtents = new Vector2( 1, 1 );
	this._viewportCount = 1;
	this._viewports = [
		new Vector4( 0, 0, 1, 1 )
	];
}
Object.assign( LightShadow.prototype, {
	_projScreenMatrix: new Matrix4(),
	_lightPositionWorld: new Vector3(),
	_lookTarget: new Vector3(),
	getViewportCount: function () {
		return this._viewportCount;
	},
	getFrustum: function () {
		return this._frustum;
	},
	updateMatrices: function ( light ) {
		const shadowCamera = this.camera,
			shadowMatrix = this.matrix,
			projScreenMatrix = this._projScreenMatrix,
			lookTarget = this._lookTarget,
			lightPositionWorld = this._lightPositionWorld;
		lightPositionWorld.setFromMatrixPosition( light.matrixWorld );
		shadowCamera.position.copy( lightPositionWorld );
		lookTarget.setFromMatrixPosition( light.target.matrixWorld );
		shadowCamera.lookAt( lookTarget );
		shadowCamera.updateMatrixWorld();
		projScreenMatrix.multiplyMatrices( shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse );
		this._frustum.setFromProjectionMatrix( projScreenMatrix );
		shadowMatrix.set(
			0.5, 0.0, 0.0, 0.5,
			0.0, 0.5, 0.0, 0.5,
			0.0, 0.0, 0.5, 0.5,
			0.0, 0.0, 0.0, 1.0
		);
		shadowMatrix.multiply( shadowCamera.projectionMatrix );
		shadowMatrix.multiply( shadowCamera.matrixWorldInverse );
	},
	getViewport: function ( viewportIndex ) {
		return this._viewports[ viewportIndex ];
	},
	getFrameExtents: function () {
		return this._frameExtents;
	},
	copy: function ( source ) {
		this.camera = source.camera.clone();
		this.bias = source.bias;
		this.radius = source.radius;
		this.mapSize.copy( source.mapSize );
		return this;
	},
	clone: function () {
		return new this.constructor().copy( this );
	},
	toJSON: function () {
		const object = {};
		if ( this.bias !== 0 ) object.bias = this.bias;
		if ( this.normalBias !== 0 ) object.normalBias = this.normalBias;
		if ( this.radius !== 1 ) object.radius = this.radius;
		if ( this.mapSize.x !== 512 || this.mapSize.y !== 512 ) object.mapSize = this.mapSize.toArray();
		object.camera = this.camera.toJSON( false ).object;
		delete object.camera.matrix;
		return object;
	}
} );
function SpotLightShadow() {
	LightShadow.call( this, new PerspectiveCamera( 50, 1, 0.5, 500 ) );
}
SpotLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {
	constructor: SpotLightShadow,
	isSpotLightShadow: true,
	updateMatrices: function ( light ) {
		const camera = this.camera;
		const fov = MathUtils.RAD2DEG * 2 * light.angle;
		const aspect = this.mapSize.width / this.mapSize.height;
		const far = light.distance || camera.far;
		if ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {
			camera.fov = fov;
			camera.aspect = aspect;
			camera.far = far;
			camera.updateProjectionMatrix();
		}
		LightShadow.prototype.updateMatrices.call( this, light );
	}
} );
function SpotLight( color, intensity, distance, angle, penumbra, decay ) {
	Light.call( this, color, intensity );
	this.type = 'SpotLight';
	this.position.copy( Object3D.DefaultUp );
	this.updateMatrix();
	this.target = new Object3D();
	Object.defineProperty( this, 'power', {
		get: function () {
			return this.intensity * Math.PI;
		},
		set: function ( power ) {
			this.intensity = power / Math.PI;
		}
	} );
	this.distance = ( distance !== undefined ) ? distance : 0;
	this.angle = ( angle !== undefined ) ? angle : Math.PI / 3;
	this.penumbra = ( penumbra !== undefined ) ? penumbra : 0;
	this.decay = ( decay !== undefined ) ? decay : 1;
	this.shadow = new SpotLightShadow();
}
SpotLight.prototype = Object.assign( Object.create( Light.prototype ), {
	constructor: SpotLight,
	isSpotLight: true,
	copy: function ( source ) {
		Light.prototype.copy.call( this, source );
		this.distance = source.distance;
		this.angle = source.angle;
		this.penumbra = source.penumbra;
		this.decay = source.decay;
		this.target = source.target.clone();
		this.shadow = source.shadow.clone();
		return this;
	}
} );
function PointLightShadow() {
	LightShadow.call( this, new PerspectiveCamera( 90, 1, 0.5, 500 ) );
	this._frameExtents = new Vector2( 4, 2 );
	this._viewportCount = 6;
	this._viewports = [
		new Vector4( 2, 1, 1, 1 ),
		new Vector4( 0, 1, 1, 1 ),
		new Vector4( 3, 1, 1, 1 ),
		new Vector4( 1, 1, 1, 1 ),
		new Vector4( 3, 0, 1, 1 ),
		new Vector4( 1, 0, 1, 1 )
	];
	this._cubeDirections = [
		new Vector3( 1, 0, 0 ), new Vector3( - 1, 0, 0 ), new Vector3( 0, 0, 1 ),
		new Vector3( 0, 0, - 1 ), new Vector3( 0, 1, 0 ), new Vector3( 0, - 1, 0 )
	];
	this._cubeUps = [
		new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ),
		new Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),	new Vector3( 0, 0, - 1 )
	];
}
PointLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {
	constructor: PointLightShadow,
	isPointLightShadow: true,
	updateMatrices: function ( light, viewportIndex ) {
		if ( viewportIndex === undefined ) viewportIndex = 0;
		const camera = this.camera,
			shadowMatrix = this.matrix,
			lightPositionWorld = this._lightPositionWorld,
			lookTarget = this._lookTarget,
			projScreenMatrix = this._projScreenMatrix;
		lightPositionWorld.setFromMatrixPosition( light.matrixWorld );
		camera.position.copy( lightPositionWorld );
		lookTarget.copy( camera.position );
		lookTarget.add( this._cubeDirections[ viewportIndex ] );
		camera.up.copy( this._cubeUps[ viewportIndex ] );
		camera.lookAt( lookTarget );
		camera.updateMatrixWorld();
		shadowMatrix.makeTranslation( - lightPositionWorld.x, - lightPositionWorld.y, - lightPositionWorld.z );
		projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
		this._frustum.setFromProjectionMatrix( projScreenMatrix );
	}
} );
function PointLight( color, intensity, distance, decay ) {
	Light.call( this, color, intensity );
	this.type = 'PointLight';
	Object.defineProperty( this, 'power', {
		get: function () {
			return this.intensity * 4 * Math.PI;
		},
		set: function ( power ) {
			this.intensity = power / ( 4 * Math.PI );
		}
	} );
	this.distance = ( distance !== undefined ) ? distance : 0;
	this.decay = ( decay !== undefined ) ? decay : 1;
	this.shadow = new PointLightShadow();
}
PointLight.prototype = Object.assign( Object.create( Light.prototype ), {
	constructor: PointLight,
	isPointLight: true,
	copy: function ( source ) {
		Light.prototype.copy.call( this, source );
		this.distance = source.distance;
		this.decay = source.decay;
		this.shadow = source.shadow.clone();
		return this;
	}
} );
function OrthographicCamera( left, right, top, bottom, near, far ) {
	Camera.call( this );
	this.type = 'OrthographicCamera';
	this.zoom = 1;
	this.view = null;
	this.left = ( left !== undefined ) ? left : - 1;
	this.right = ( right !== undefined ) ? right : 1;
	this.top = ( top !== undefined ) ? top : 1;
	this.bottom = ( bottom !== undefined ) ? bottom : - 1;
	this.near = ( near !== undefined ) ? near : 0.1;
	this.far = ( far !== undefined ) ? far : 2000;
	this.updateProjectionMatrix();
}
OrthographicCamera.prototype = Object.assign( Object.create( Camera.prototype ), {
	constructor: OrthographicCamera,
	isOrthographicCamera: true,
	copy: function ( source, recursive ) {
		Camera.prototype.copy.call( this, source, recursive );
		this.left = source.left;
		this.right = source.right;
		this.top = source.top;
		this.bottom = source.bottom;
		this.near = source.near;
		this.far = source.far;
		this.zoom = source.zoom;
		this.view = source.view === null ? null : Object.assign( {}, source.view );
		return this;
	},
	setViewOffset: function ( fullWidth, fullHeight, x, y, width, height ) {
		if ( this.view === null ) {
			this.view = {
				enabled: true,
				fullWidth: 1,
				fullHeight: 1,
				offsetX: 0,
				offsetY: 0,
				width: 1,
				height: 1
			};
		}
		this.view.enabled = true;
		this.view.fullWidth = fullWidth;
		this.view.fullHeight = fullHeight;
		this.view.offsetX = x;
		this.view.offsetY = y;
		this.view.width = width;
		this.view.height = height;
		this.updateProjectionMatrix();
	},
	clearViewOffset: function () {
		if ( this.view !== null ) {
			this.view.enabled = false;
		}
		this.updateProjectionMatrix();
	},
	updateProjectionMatrix: function () {
		const dx = ( this.right - this.left ) / ( 2 * this.zoom );
		const dy = ( this.top - this.bottom ) / ( 2 * this.zoom );
		const cx = ( this.right + this.left ) / 2;
		const cy = ( this.top + this.bottom ) / 2;
		let left = cx - dx;
		let right = cx + dx;
		let top = cy + dy;
		let bottom = cy - dy;
		if ( this.view !== null && this.view.enabled ) {
			const scaleW = ( this.right - this.left ) / this.view.fullWidth / this.zoom;
			const scaleH = ( this.top - this.bottom ) / this.view.fullHeight / this.zoom;
			left += scaleW * this.view.offsetX;
			right = left + scaleW * this.view.width;
			top -= scaleH * this.view.offsetY;
			bottom = top - scaleH * this.view.height;
		}
		this.projectionMatrix.makeOrthographic( left, right, top, bottom, this.near, this.far );
		this.projectionMatrixInverse.getInverse( this.projectionMatrix );
	},
	toJSON: function ( meta ) {
		const data = Object3D.prototype.toJSON.call( this, meta );
		data.object.zoom = this.zoom;
		data.object.left = this.left;
		data.object.right = this.right;
		data.object.top = this.top;
		data.object.bottom = this.bottom;
		data.object.near = this.near;
		data.object.far = this.far;
		if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );
		return data;
	}
} );
function DirectionalLightShadow() {
	LightShadow.call( this, new OrthographicCamera( - 5, 5, 5, - 5, 0.5, 500 ) );
}
DirectionalLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {
	constructor: DirectionalLightShadow,
	isDirectionalLightShadow: true,
	updateMatrices: function ( light ) {
		LightShadow.prototype.updateMatrices.call( this, light );
	}
} );
function DirectionalLight( color, intensity ) {
	Light.call( this, color, intensity );
	this.type = 'DirectionalLight';
	this.position.copy( Object3D.DefaultUp );
	this.updateMatrix();
	this.target = new Object3D();
	this.shadow = new DirectionalLightShadow();
}
DirectionalLight.prototype = Object.assign( Object.create( Light.prototype ), {
	constructor: DirectionalLight,
	isDirectionalLight: true,
	copy: function ( source ) {
		Light.prototype.copy.call( this, source );
		this.target = source.target.clone();
		this.shadow = source.shadow.clone();
		return this;
	}
} );
function AmbientLight( color, intensity ) {
	Light.call( this, color, intensity );
	this.type = 'AmbientLight';
	this.castShadow = undefined;
}
AmbientLight.prototype = Object.assign( Object.create( Light.prototype ), {
	constructor: AmbientLight,
	isAmbientLight: true
} );
function RectAreaLight( color, intensity, width, height ) {
	Light.call( this, color, intensity );
	this.type = 'RectAreaLight';
	this.width = ( width !== undefined ) ? width : 10;
	this.height = ( height !== undefined ) ? height : 10;
}
RectAreaLight.prototype = Object.assign( Object.create( Light.prototype ), {
	constructor: RectAreaLight,
	isRectAreaLight: true,
	copy: function ( source ) {
		Light.prototype.copy.call( this, source );
		this.width = source.width;
		this.height = source.height;
		return this;
	},
	toJSON: function ( meta ) {
		const data = Light.prototype.toJSON.call( this, meta );
		data.object.width = this.width;
		data.object.height = this.height;
		return data;
	}
} );
class SphericalHarmonics3 {
	constructor() {
		Object.defineProperty( this, 'isSphericalHarmonics3', { value: true } );
		this.coefficients = [];
		for ( let i = 0; i < 9; i ++ ) {
			this.coefficients.push( new Vector3() );
		}
	}
	set( coefficients ) {
		for ( let i = 0; i < 9; i ++ ) {
			this.coefficients[ i ].copy( coefficients[ i ] );
		}
		return this;
	}
	zero() {
		for ( let i = 0; i < 9; i ++ ) {
			this.coefficients[ i ].set( 0, 0, 0 );
		}
		return this;
	}
	getAt( normal, target ) {
		const x = normal.x, y = normal.y, z = normal.z;
		const coeff = this.coefficients;
		target.copy( coeff[ 0 ] ).multiplyScalar( 0.282095 );
		target.addScaledVector( coeff[ 1 ], 0.488603 * y );
		target.addScaledVector( coeff[ 2 ], 0.488603 * z );
		target.addScaledVector( coeff[ 3 ], 0.488603 * x );
		target.addScaledVector( coeff[ 4 ], 1.092548 * ( x * y ) );
		target.addScaledVector( coeff[ 5 ], 1.092548 * ( y * z ) );
		target.addScaledVector( coeff[ 6 ], 0.315392 * ( 3.0 * z * z - 1.0 ) );
		target.addScaledVector( coeff[ 7 ], 1.092548 * ( x * z ) );
		target.addScaledVector( coeff[ 8 ], 0.546274 * ( x * x - y * y ) );
		return target;
	}
	getIrradianceAt( normal, target ) {
		const x = normal.x, y = normal.y, z = normal.z;
		const coeff = this.coefficients;
		target.copy( coeff[ 0 ] ).multiplyScalar( 0.886227 );
		target.addScaledVector( coeff[ 1 ], 2.0 * 0.511664 * y );
		target.addScaledVector( coeff[ 2 ], 2.0 * 0.511664 * z );
		target.addScaledVector( coeff[ 3 ], 2.0 * 0.511664 * x );
		target.addScaledVector( coeff[ 4 ], 2.0 * 0.429043 * x * y );
		target.addScaledVector( coeff[ 5 ], 2.0 * 0.429043 * y * z );
		target.addScaledVector( coeff[ 6 ], 0.743125 * z * z - 0.247708 );
		target.addScaledVector( coeff[ 7 ], 2.0 * 0.429043 * x * z );
		target.addScaledVector( coeff[ 8 ], 0.429043 * ( x * x - y * y ) );
		return target;
	}
	add( sh ) {
		for ( let i = 0; i < 9; i ++ ) {
			this.coefficients[ i ].add( sh.coefficients[ i ] );
		}
		return this;
	}
	addScaledSH( sh, s ) {
		for ( let i = 0; i < 9; i ++ ) {
			this.coefficients[ i ].addScaledVector( sh.coefficients[ i ], s );
		}
		return this;
	}
	scale( s ) {
		for ( let i = 0; i < 9; i ++ ) {
			this.coefficients[ i ].multiplyScalar( s );
		}
		return this;
	}
	lerp( sh, alpha ) {
		for ( let i = 0; i < 9; i ++ ) {
			this.coefficients[ i ].lerp( sh.coefficients[ i ], alpha );
		}
		return this;
	}
	equals( sh ) {
		for ( let i = 0; i < 9; i ++ ) {
			if ( ! this.coefficients[ i ].equals( sh.coefficients[ i ] ) ) {
				return false;
			}
		}
		return true;
	}
	copy( sh ) {
		return this.set( sh.coefficients );
	}
	clone() {
		return new this.constructor().copy( this );
	}
	fromArray( array, offset ) {
		if ( offset === undefined ) offset = 0;
		const coefficients = this.coefficients;
		for ( let i = 0; i < 9; i ++ ) {
			coefficients[ i ].fromArray( array, offset + ( i * 3 ) );
		}
		return this;
	}
	toArray( array, offset ) {
		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;
		const coefficients = this.coefficients;
		for ( let i = 0; i < 9; i ++ ) {
			coefficients[ i ].toArray( array, offset + ( i * 3 ) );
		}
		return array;
	}
	static getBasisAt( normal, shBasis ) {
		const x = normal.x, y = normal.y, z = normal.z;
		shBasis[ 0 ] = 0.282095;
		shBasis[ 1 ] = 0.488603 * y;
		shBasis[ 2 ] = 0.488603 * z;
		shBasis[ 3 ] = 0.488603 * x;
		shBasis[ 4 ] = 1.092548 * x * y;
		shBasis[ 5 ] = 1.092548 * y * z;
		shBasis[ 6 ] = 0.315392 * ( 3 * z * z - 1 );
		shBasis[ 7 ] = 1.092548 * x * z;
		shBasis[ 8 ] = 0.546274 * ( x * x - y * y );
	}
}
function LightProbe( sh, intensity ) {
	Light.call( this, undefined, intensity );
	this.type = 'LightProbe';
	this.sh = ( sh !== undefined ) ? sh : new SphericalHarmonics3();
}
LightProbe.prototype = Object.assign( Object.create( Light.prototype ), {
	constructor: LightProbe,
	isLightProbe: true,
	copy: function ( source ) {
		Light.prototype.copy.call( this, source );
		this.sh.copy( source.sh );
		return this;
	},
	fromJSON: function ( json ) {
		this.intensity = json.intensity;
		this.sh.fromArray( json.sh );
		return this;
	},
	toJSON: function ( meta ) {
		const data = Light.prototype.toJSON.call( this, meta );
		data.object.sh = this.sh.toArray();
		return data;
	}
} );
function MaterialLoader( manager ) {
	Loader.call( this, manager );
	this.textures = {};
}
MaterialLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: MaterialLoader,
	load: function ( url, onLoad, onProgress, onError ) {
		const scope = this;
		const loader = new FileLoader( scope.manager );
		loader.setPath( scope.path );
		loader.setRequestHeader( scope.requestHeader );
		loader.load( url, function ( text ) {
			try {
				onLoad( scope.parse( JSON.parse( text ) ) );
			} catch ( e ) {
				if ( onError ) {
					onError( e );
				} else {
					console.error( e );
				}
				scope.manager.itemError( url );
			}
		}, onProgress, onError );
	},
	parse: function ( json ) {
		const textures = this.textures;
		function getTexture( name ) {
			if ( textures[ name ] === undefined ) {
				console.warn( 'THREE.MaterialLoader: Undefined texture', name );
			}
			return textures[ name ];
		}
		const material = new Materials[ json.type ]();
		if ( json.uuid !== undefined ) material.uuid = json.uuid;
		if ( json.name !== undefined ) material.name = json.name;
		if ( json.color !== undefined ) material.color.setHex( json.color );
		if ( json.roughness !== undefined ) material.roughness = json.roughness;
		if ( json.metalness !== undefined ) material.metalness = json.metalness;
		if ( json.sheen !== undefined ) material.sheen = new Color().setHex( json.sheen );
		if ( json.emissive !== undefined ) material.emissive.setHex( json.emissive );
		if ( json.specular !== undefined ) material.specular.setHex( json.specular );
		if ( json.shininess !== undefined ) material.shininess = json.shininess;
		if ( json.clearcoat !== undefined ) material.clearcoat = json.clearcoat;
		if ( json.clearcoatRoughness !== undefined ) material.clearcoatRoughness = json.clearcoatRoughness;
		if ( json.fog !== undefined ) material.fog = json.fog;
		if ( json.flatShading !== undefined ) material.flatShading = json.flatShading;
		if ( json.blending !== undefined ) material.blending = json.blending;
		if ( json.combine !== undefined ) material.combine = json.combine;
		if ( json.side !== undefined ) material.side = json.side;
		if ( json.opacity !== undefined ) material.opacity = json.opacity;
		if ( json.transparent !== undefined ) material.transparent = json.transparent;
		if ( json.alphaTest !== undefined ) material.alphaTest = json.alphaTest;
		if ( json.depthTest !== undefined ) material.depthTest = json.depthTest;
		if ( json.depthWrite !== undefined ) material.depthWrite = json.depthWrite;
		if ( json.colorWrite !== undefined ) material.colorWrite = json.colorWrite;
		if ( json.stencilWrite !== undefined ) material.stencilWrite = json.stencilWrite;
		if ( json.stencilWriteMask !== undefined ) material.stencilWriteMask = json.stencilWriteMask;
		if ( json.stencilFunc !== undefined ) material.stencilFunc = json.stencilFunc;
		if ( json.stencilRef !== undefined ) material.stencilRef = json.stencilRef;
		if ( json.stencilFuncMask !== undefined ) material.stencilFuncMask = json.stencilFuncMask;
		if ( json.stencilFail !== undefined ) material.stencilFail = json.stencilFail;
		if ( json.stencilZFail !== undefined ) material.stencilZFail = json.stencilZFail;
		if ( json.stencilZPass !== undefined ) material.stencilZPass = json.stencilZPass;
		if ( json.wireframe !== undefined ) material.wireframe = json.wireframe;
		if ( json.wireframeLinewidth !== undefined ) material.wireframeLinewidth = json.wireframeLinewidth;
		if ( json.wireframeLinecap !== undefined ) material.wireframeLinecap = json.wireframeLinecap;
		if ( json.wireframeLinejoin !== undefined ) material.wireframeLinejoin = json.wireframeLinejoin;
		if ( json.rotation !== undefined ) material.rotation = json.rotation;
		if ( json.linewidth !== 1 ) material.linewidth = json.linewidth;
		if ( json.dashSize !== undefined ) material.dashSize = json.dashSize;
		if ( json.gapSize !== undefined ) material.gapSize = json.gapSize;
		if ( json.scale !== undefined ) material.scale = json.scale;
		if ( json.polygonOffset !== undefined ) material.polygonOffset = json.polygonOffset;
		if ( json.polygonOffsetFactor !== undefined ) material.polygonOffsetFactor = json.polygonOffsetFactor;
		if ( json.polygonOffsetUnits !== undefined ) material.polygonOffsetUnits = json.polygonOffsetUnits;
		if ( json.skinning !== undefined ) material.skinning = json.skinning;
		if ( json.morphTargets !== undefined ) material.morphTargets = json.morphTargets;
		if ( json.morphNormals !== undefined ) material.morphNormals = json.morphNormals;
		if ( json.dithering !== undefined ) material.dithering = json.dithering;
		if ( json.vertexTangents !== undefined ) material.vertexTangents = json.vertexTangents;
		if ( json.visible !== undefined ) material.visible = json.visible;
		if ( json.toneMapped !== undefined ) material.toneMapped = json.toneMapped;
		if ( json.userData !== undefined ) material.userData = json.userData;
		if ( json.vertexColors !== undefined ) {
			if ( typeof json.vertexColors === 'number' ) {
				material.vertexColors = ( json.vertexColors > 0 ) ? true : false;
			} else {
				material.vertexColors = json.vertexColors;
			}
		}
		if ( json.uniforms !== undefined ) {
			for ( const name in json.uniforms ) {
				const uniform = json.uniforms[ name ];
				material.uniforms[ name ] = {};
				switch ( uniform.type ) {
					case 't':
						material.uniforms[ name ].value = getTexture( uniform.value );
						break;
					case 'c':
						material.uniforms[ name ].value = new Color().setHex( uniform.value );
						break;
					case 'v2':
						material.uniforms[ name ].value = new Vector2().fromArray( uniform.value );
						break;
					case 'v3':
						material.uniforms[ name ].value = new Vector3().fromArray( uniform.value );
						break;
					case 'v4':
						material.uniforms[ name ].value = new Vector4().fromArray( uniform.value );
						break;
					case 'm3':
						material.uniforms[ name ].value = new Matrix3().fromArray( uniform.value );
						break;
					case 'm4':
						material.uniforms[ name ].value = new Matrix4().fromArray( uniform.value );
						break;
					default:
						material.uniforms[ name ].value = uniform.value;
				}
			}
		}
		if ( json.defines !== undefined ) material.defines = json.defines;
		if ( json.vertexShader !== undefined ) material.vertexShader = json.vertexShader;
		if ( json.fragmentShader !== undefined ) material.fragmentShader = json.fragmentShader;
		if ( json.extensions !== undefined ) {
			for ( const key in json.extensions ) {
				material.extensions[ key ] = json.extensions[ key ];
			}
		}
		if ( json.shading !== undefined ) material.flatShading = json.shading === 1;
		if ( json.size !== undefined ) material.size = json.size;
		if ( json.sizeAttenuation !== undefined ) material.sizeAttenuation = json.sizeAttenuation;
		if ( json.map !== undefined ) material.map = getTexture( json.map );
		if ( json.matcap !== undefined ) material.matcap = getTexture( json.matcap );
		if ( json.alphaMap !== undefined ) material.alphaMap = getTexture( json.alphaMap );
		if ( json.bumpMap !== undefined ) material.bumpMap = getTexture( json.bumpMap );
		if ( json.bumpScale !== undefined ) material.bumpScale = json.bumpScale;
		if ( json.normalMap !== undefined ) material.normalMap = getTexture( json.normalMap );
		if ( json.normalMapType !== undefined ) material.normalMapType = json.normalMapType;
		if ( json.normalScale !== undefined ) {
			let normalScale = json.normalScale;
			if ( Array.isArray( normalScale ) === false ) {
				normalScale = [ normalScale, normalScale ];
			}
			material.normalScale = new Vector2().fromArray( normalScale );
		}
		if ( json.displacementMap !== undefined ) material.displacementMap = getTexture( json.displacementMap );
		if ( json.displacementScale !== undefined ) material.displacementScale = json.displacementScale;
		if ( json.displacementBias !== undefined ) material.displacementBias = json.displacementBias;
		if ( json.roughnessMap !== undefined ) material.roughnessMap = getTexture( json.roughnessMap );
		if ( json.metalnessMap !== undefined ) material.metalnessMap = getTexture( json.metalnessMap );
		if ( json.emissiveMap !== undefined ) material.emissiveMap = getTexture( json.emissiveMap );
		if ( json.emissiveIntensity !== undefined ) material.emissiveIntensity = json.emissiveIntensity;
		if ( json.specularMap !== undefined ) material.specularMap = getTexture( json.specularMap );
		if ( json.envMap !== undefined ) material.envMap = getTexture( json.envMap );
		if ( json.envMapIntensity !== undefined ) material.envMapIntensity = json.envMapIntensity;
		if ( json.reflectivity !== undefined ) material.reflectivity = json.reflectivity;
		if ( json.refractionRatio !== undefined ) material.refractionRatio = json.refractionRatio;
		if ( json.lightMap !== undefined ) material.lightMap = getTexture( json.lightMap );
		if ( json.lightMapIntensity !== undefined ) material.lightMapIntensity = json.lightMapIntensity;
		if ( json.aoMap !== undefined ) material.aoMap = getTexture( json.aoMap );
		if ( json.aoMapIntensity !== undefined ) material.aoMapIntensity = json.aoMapIntensity;
		if ( json.gradientMap !== undefined ) material.gradientMap = getTexture( json.gradientMap );
		if ( json.clearcoatMap !== undefined ) material.clearcoatMap = getTexture( json.clearcoatMap );
		if ( json.clearcoatRoughnessMap !== undefined ) material.clearcoatRoughnessMap = getTexture( json.clearcoatRoughnessMap );
		if ( json.clearcoatNormalMap !== undefined ) material.clearcoatNormalMap = getTexture( json.clearcoatNormalMap );
		if ( json.clearcoatNormalScale !== undefined ) material.clearcoatNormalScale = new Vector2().fromArray( json.clearcoatNormalScale );
		if ( json.transmission !== undefined ) material.transmission = json.transmission;
		if ( json.transmissionMap !== undefined ) material.transmissionMap = getTexture( json.transmissionMap );
		return material;
	},
	setTextures: function ( value ) {
		this.textures = value;
		return this;
	}
} );
const LoaderUtils = {
	decodeText: function ( array ) {
		if ( typeof TextDecoder !== 'undefined' ) {
			return new TextDecoder().decode( array );
		}
		let s = '';
		for ( let i = 0, il = array.length; i < il; i ++ ) {
			s += String.fromCharCode( array[ i ] );
		}
		try {
			return decodeURIComponent( escape( s ) );
		} catch ( e ) {
			return s;
		}
	},
	extractUrlBase: function ( url ) {
		const index = url.lastIndexOf( '/' );
		if ( index === - 1 ) return './';
		return url.substr( 0, index + 1 );
	}
};
function InstancedBufferGeometry() {
	BufferGeometry.call( this );
	this.type = 'InstancedBufferGeometry';
	this.instanceCount = Infinity;
}
InstancedBufferGeometry.prototype = Object.assign( Object.create( BufferGeometry.prototype ), {
	constructor: InstancedBufferGeometry,
	isInstancedBufferGeometry: true,
	copy: function ( source ) {
		BufferGeometry.prototype.copy.call( this, source );
		this.instanceCount = source.instanceCount;
		return this;
	},
	clone: function () {
		return new this.constructor().copy( this );
	},
	toJSON: function () {
		const data = BufferGeometry.prototype.toJSON.call( this );
		data.instanceCount = this.instanceCount;
		data.isInstancedBufferGeometry = true;
		return data;
	}
} );
function InstancedBufferAttribute( array, itemSize, normalized, meshPerAttribute ) {
	if ( typeof ( normalized ) === 'number' ) {
		meshPerAttribute = normalized;
		normalized = false;
		console.error( 'THREE.InstancedBufferAttribute: The constructor now expects normalized as the third argument.' );
	}
	BufferAttribute.call( this, array, itemSize, normalized );
	this.meshPerAttribute = meshPerAttribute || 1;
}
InstancedBufferAttribute.prototype = Object.assign( Object.create( BufferAttribute.prototype ), {
	constructor: InstancedBufferAttribute,
	isInstancedBufferAttribute: true,
	copy: function ( source ) {
		BufferAttribute.prototype.copy.call( this, source );
		this.meshPerAttribute = source.meshPerAttribute;
		return this;
	},
	toJSON: function ()	{
		const data = BufferAttribute.prototype.toJSON.call( this );
		data.meshPerAttribute = this.meshPerAttribute;
		data.isInstancedBufferAttribute = true;
		return data;
	}
} );
function BufferGeometryLoader( manager ) {
	Loader.call( this, manager );
}
BufferGeometryLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: BufferGeometryLoader,
	load: function ( url, onLoad, onProgress, onError ) {
		const scope = this;
		const loader = new FileLoader( scope.manager );
		loader.setPath( scope.path );
		loader.setRequestHeader( scope.requestHeader );
		loader.load( url, function ( text ) {
			try {
				onLoad( scope.parse( JSON.parse( text ) ) );
			} catch ( e ) {
				if ( onError ) {
					onError( e );
				} else {
					console.error( e );
				}
				scope.manager.itemError( url );
			}
		}, onProgress, onError );
	},
	parse: function ( json ) {
		const interleavedBufferMap = {};
		const arrayBufferMap = {};
		function getInterleavedBuffer( json, uuid ) {
			if ( interleavedBufferMap[ uuid ] !== undefined ) return interleavedBufferMap[ uuid ];
			const interleavedBuffers = json.interleavedBuffers;
			const interleavedBuffer = interleavedBuffers[ uuid ];
			const buffer = getArrayBuffer( json, interleavedBuffer.buffer );
			const array = new TYPED_ARRAYS[ interleavedBuffer.type ]( buffer );
			const ib = new InterleavedBuffer( array, interleavedBuffer.stride );
			ib.uuid = interleavedBuffer.uuid;
			interleavedBufferMap[ uuid ] = ib;
			return ib;
		}
		function getArrayBuffer( json, uuid ) {
			if ( arrayBufferMap[ uuid ] !== undefined ) return arrayBufferMap[ uuid ];
			const arrayBuffers = json.arrayBuffers;
			const arrayBuffer = arrayBuffers[ uuid ];
			const ab = new Uint32Array( arrayBuffer ).buffer;
			arrayBufferMap[ uuid ] = ab;
			return ab;
		}
		const geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();
		const index = json.data.index;
		if ( index !== undefined ) {
			const typedArray = new TYPED_ARRAYS[ index.type ]( index.array );
			geometry.setIndex( new BufferAttribute( typedArray, 1 ) );
		}
		const attributes = json.data.attributes;
		for ( const key in attributes ) {
			const attribute = attributes[ key ];
			let bufferAttribute;
			if ( attribute.isInterleavedBufferAttribute ) {
				const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
				bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );
			} else {
				const typedArray = new TYPED_ARRAYS[ attribute.type ]( attribute.array );
				const bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;
				bufferAttribute = new bufferAttributeConstr( typedArray, attribute.itemSize, attribute.normalized );
			}
			if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
			geometry.setAttribute( key, bufferAttribute );
		}
		const morphAttributes = json.data.morphAttributes;
		if ( morphAttributes ) {
			for ( const key in morphAttributes ) {
				const attributeArray = morphAttributes[ key ];
				const array = [];
				for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {
					const attribute = attributeArray[ i ];
					let bufferAttribute;
					if ( attribute.isInterleavedBufferAttribute ) {
						const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
						bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );
					} else {
						const typedArray = new TYPED_ARRAYS[ attribute.type ]( attribute.array );
						bufferAttribute = new BufferAttribute( typedArray, attribute.itemSize, attribute.normalized );
					}
					if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
					array.push( bufferAttribute );
				}
				geometry.morphAttributes[ key ] = array;
			}
		}
		const morphTargetsRelative = json.data.morphTargetsRelative;
		if ( morphTargetsRelative ) {
			geometry.morphTargetsRelative = true;
		}
		const groups = json.data.groups || json.data.drawcalls || json.data.offsets;
		if ( groups !== undefined ) {
			for ( let i = 0, n = groups.length; i !== n; ++ i ) {
				const group = groups[ i ];
				geometry.addGroup( group.start, group.count, group.materialIndex );
			}
		}
		const boundingSphere = json.data.boundingSphere;
		if ( boundingSphere !== undefined ) {
			const center = new Vector3();
			if ( boundingSphere.center !== undefined ) {
				center.fromArray( boundingSphere.center );
			}
			geometry.boundingSphere = new Sphere( center, boundingSphere.radius );
		}
		if ( json.name ) geometry.name = json.name;
		if ( json.userData ) geometry.userData = json.userData;
		return geometry;
	}
} );
const TYPED_ARRAYS = {
	Int8Array: Int8Array,
	Uint8Array: Uint8Array,
	Uint8ClampedArray: typeof Uint8ClampedArray !== 'undefined' ? Uint8ClampedArray : Uint8Array,
	Int16Array: Int16Array,
	Uint16Array: Uint16Array,
	Int32Array: Int32Array,
	Uint32Array: Uint32Array,
	Float32Array: Float32Array,
	Float64Array: Float64Array
};
function ObjectLoader( manager ) {
	Loader.call( this, manager );
}
ObjectLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: ObjectLoader,
	load: function ( url, onLoad, onProgress, onError ) {
		const scope = this;
		const path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;
		this.resourcePath = this.resourcePath || path;
		const loader = new FileLoader( scope.manager );
		loader.setPath( this.path );
		loader.setRequestHeader( this.requestHeader );
		loader.load( url, function ( text ) {
			let json = null;
			try {
				json = JSON.parse( text );
			} catch ( error ) {
				if ( onError !== undefined ) onError( error );
				console.error( 'THREE:ObjectLoader: Can\'t parse ' + url + '.', error.message );
				return;
			}
			const metadata = json.metadata;
			if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {
				console.error( 'THREE.ObjectLoader: Can\'t load ' + url );
				return;
			}
			scope.parse( json, onLoad );
		}, onProgress, onError );
	},
	parse: function ( json, onLoad ) {
		const shapes = this.parseShape( json.shapes );
		const geometries = this.parseGeometries( json.geometries, shapes );
		const images = this.parseImages( json.images, function () {
			if ( onLoad !== undefined ) onLoad( object );
		} );
		const textures = this.parseTextures( json.textures, images );
		const materials = this.parseMaterials( json.materials, textures );
		const object = this.parseObject( json.object, geometries, materials );
		if ( json.animations ) {
			object.animations = this.parseAnimations( json.animations );
		}
		if ( json.images === undefined || json.images.length === 0 ) {
			if ( onLoad !== undefined ) onLoad( object );
		}
		return object;
	},
	parseShape: function ( json ) {
		const shapes = {};
		if ( json !== undefined ) {
			for ( let i = 0, l = json.length; i < l; i ++ ) {
				const shape = new Shape().fromJSON( json[ i ] );
				shapes[ shape.uuid ] = shape;
			}
		}
		return shapes;
	},
	parseGeometries: function ( json, shapes ) {
		const geometries = {};
		let geometryShapes;
		if ( json !== undefined ) {
			const bufferGeometryLoader = new BufferGeometryLoader();
			for ( let i = 0, l = json.length; i < l; i ++ ) {
				let geometry;
				const data = json[ i ];
				switch ( data.type ) {
					case 'PlaneGeometry':
					case 'PlaneBufferGeometry':
						geometry = new Geometries[ data.type ](
							data.width,
							data.height,
							data.widthSegments,
							data.heightSegments
						);
						break;
					case 'BoxGeometry':
					case 'BoxBufferGeometry':
					case 'CubeGeometry':
						geometry = new Geometries[ data.type ](
							data.width,
							data.height,
							data.depth,
							data.widthSegments,
							data.heightSegments,
							data.depthSegments
						);
						break;
					case 'CircleGeometry':
					case 'CircleBufferGeometry':
						geometry = new Geometries[ data.type ](
							data.radius,
							data.segments,
							data.thetaStart,
							data.thetaLength
						);
						break;
					case 'CylinderGeometry':
					case 'CylinderBufferGeometry':
						geometry = new Geometries[ data.type ](
							data.radiusTop,
							data.radiusBottom,
							data.height,
							data.radialSegments,
							data.heightSegments,
							data.openEnded,
							data.thetaStart,
							data.thetaLength
						);
						break;
					case 'ConeGeometry':
					case 'ConeBufferGeometry':
						geometry = new Geometries[ data.type ](
							data.radius,
							data.height,
							data.radialSegments,
							data.heightSegments,
							data.openEnded,
							data.thetaStart,
							data.thetaLength
						);
						break;
					case 'SphereGeometry':
					case 'SphereBufferGeometry':
						geometry = new Geometries[ data.type ](
							data.radius,
							data.widthSegments,
							data.heightSegments,
							data.phiStart,
							data.phiLength,
							data.thetaStart,
							data.thetaLength
						);
						break;
					case 'DodecahedronGeometry':
					case 'DodecahedronBufferGeometry':
					case 'IcosahedronGeometry':
					case 'IcosahedronBufferGeometry':
					case 'OctahedronGeometry':
					case 'OctahedronBufferGeometry':
					case 'TetrahedronGeometry':
					case 'TetrahedronBufferGeometry':
						geometry = new Geometries[ data.type ](
							data.radius,
							data.detail
						);
						break;
					case 'RingGeometry':
					case 'RingBufferGeometry':
						geometry = new Geometries[ data.type ](
							data.innerRadius,
							data.outerRadius,
							data.thetaSegments,
							data.phiSegments,
							data.thetaStart,
							data.thetaLength
						);
						break;
					case 'TorusGeometry':
					case 'TorusBufferGeometry':
						geometry = new Geometries[ data.type ](
							data.radius,
							data.tube,
							data.radialSegments,
							data.tubularSegments,
							data.arc
						);
						break;
					case 'TorusKnotGeometry':
					case 'TorusKnotBufferGeometry':
						geometry = new Geometries[ data.type ](
							data.radius,
							data.tube,
							data.tubularSegments,
							data.radialSegments,
							data.p,
							data.q
						);
						break;
					case 'TubeGeometry':
					case 'TubeBufferGeometry':
						geometry = new Geometries[ data.type ](
							new Curves[ data.path.type ]().fromJSON( data.path ),
							data.tubularSegments,
							data.radius,
							data.radialSegments,
							data.closed
						);
						break;
					case 'LatheGeometry':
					case 'LatheBufferGeometry':
						geometry = new Geometries[ data.type ](
							data.points,
							data.segments,
							data.phiStart,
							data.phiLength
						);
						break;
					case 'PolyhedronGeometry':
					case 'PolyhedronBufferGeometry':
						geometry = new Geometries[ data.type ](
							data.vertices,
							data.indices,
							data.radius,
							data.details
						);
						break;
					case 'ShapeGeometry':
					case 'ShapeBufferGeometry':
						geometryShapes = [];
						for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {
							const shape = shapes[ data.shapes[ j ] ];
							geometryShapes.push( shape );
						}
						geometry = new Geometries[ data.type ](
							geometryShapes,
							data.curveSegments
						);
						break;
					case 'ExtrudeGeometry':
					case 'ExtrudeBufferGeometry':
						geometryShapes = [];
						for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {
							const shape = shapes[ data.shapes[ j ] ];
							geometryShapes.push( shape );
						}
						const extrudePath = data.options.extrudePath;
						if ( extrudePath !== undefined ) {
							data.options.extrudePath = new Curves[ extrudePath.type ]().fromJSON( extrudePath );
						}
						geometry = new Geometries[ data.type ](
							geometryShapes,
							data.options
						);
						break;
					case 'BufferGeometry':
					case 'InstancedBufferGeometry':
						geometry = bufferGeometryLoader.parse( data );
						break;
					case 'Geometry':
						console.error( 'THREE.ObjectLoader: Loading "Geometry" is not supported anymore.' );
						break;
					default:
						console.warn( 'THREE.ObjectLoader: Unsupported geometry type "' + data.type + '"' );
						continue;
				}
				geometry.uuid = data.uuid;
				if ( data.name !== undefined ) geometry.name = data.name;
				if ( geometry.isBufferGeometry === true && data.userData !== undefined ) geometry.userData = data.userData;
				geometries[ data.uuid ] = geometry;
			}
		}
		return geometries;
	},
	parseMaterials: function ( json, textures ) {
		const cache = {};
		const materials = {};
		if ( json !== undefined ) {
			const loader = new MaterialLoader();
			loader.setTextures( textures );
			for ( let i = 0, l = json.length; i < l; i ++ ) {
				const data = json[ i ];
				if ( data.type === 'MultiMaterial' ) {
					const array = [];
					for ( let j = 0; j < data.materials.length; j ++ ) {
						const material = data.materials[ j ];
						if ( cache[ material.uuid ] === undefined ) {
							cache[ material.uuid ] = loader.parse( material );
						}
						array.push( cache[ material.uuid ] );
					}
					materials[ data.uuid ] = array;
				} else {
					if ( cache[ data.uuid ] === undefined ) {
						cache[ data.uuid ] = loader.parse( data );
					}
					materials[ data.uuid ] = cache[ data.uuid ];
				}
			}
		}
		return materials;
	},
	parseAnimations: function ( json ) {
		const animations = [];
		for ( let i = 0; i < json.length; i ++ ) {
			const data = json[ i ];
			const clip = AnimationClip.parse( data );
			if ( data.uuid !== undefined ) clip.uuid = data.uuid;
			animations.push( clip );
		}
		return animations;
	},
	parseImages: function ( json, onLoad ) {
		const scope = this;
		const images = {};
		let loader;
		function loadImage( url ) {
			scope.manager.itemStart( url );
			return loader.load( url, function () {
				scope.manager.itemEnd( url );
			}, undefined, function () {
				scope.manager.itemError( url );
				scope.manager.itemEnd( url );
			} );
		}
		if ( json !== undefined && json.length > 0 ) {
			const manager = new LoadingManager( onLoad );
			loader = new ImageLoader( manager );
			loader.setCrossOrigin( this.crossOrigin );
			for ( let i = 0, il = json.length; i < il; i ++ ) {
				const image = json[ i ];
				const url = image.url;
				if ( Array.isArray( url ) ) {
					images[ image.uuid ] = [];
					for ( let j = 0, jl = url.length; j < jl; j ++ ) {
						const currentUrl = url[ j ];
						const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( currentUrl ) ? currentUrl : scope.resourcePath + currentUrl;
						images[ image.uuid ].push( loadImage( path ) );
					}
				} else {
					const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( image.url ) ? image.url : scope.resourcePath + image.url;
					images[ image.uuid ] = loadImage( path );
				}
			}
		}
		return images;
	},
	parseTextures: function ( json, images ) {
		function parseConstant( value, type ) {
			if ( typeof value === 'number' ) return value;
			console.warn( 'THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value );
			return type[ value ];
		}
		const textures = {};
		if ( json !== undefined ) {
			for ( let i = 0, l = json.length; i < l; i ++ ) {
				const data = json[ i ];
				if ( data.image === undefined ) {
					console.warn( 'THREE.ObjectLoader: No "image" specified for', data.uuid );
				}
				if ( images[ data.image ] === undefined ) {
					console.warn( 'THREE.ObjectLoader: Undefined image', data.image );
				}
				let texture;
				if ( Array.isArray( images[ data.image ] ) ) {
					texture = new CubeTexture( images[ data.image ] );
				} else {
					texture = new Texture( images[ data.image ] );
				}
				texture.needsUpdate = true;
				texture.uuid = data.uuid;
				if ( data.name !== undefined ) texture.name = data.name;
				if ( data.mapping !== undefined ) texture.mapping = parseConstant( data.mapping, TEXTURE_MAPPING );
				if ( data.offset !== undefined ) texture.offset.fromArray( data.offset );
				if ( data.repeat !== undefined ) texture.repeat.fromArray( data.repeat );
				if ( data.center !== undefined ) texture.center.fromArray( data.center );
				if ( data.rotation !== undefined ) texture.rotation = data.rotation;
				if ( data.wrap !== undefined ) {
					texture.wrapS = parseConstant( data.wrap[ 0 ], TEXTURE_WRAPPING );
					texture.wrapT = parseConstant( data.wrap[ 1 ], TEXTURE_WRAPPING );
				}
				if ( data.format !== undefined ) texture.format = data.format;
				if ( data.type !== undefined ) texture.type = data.type;
				if ( data.encoding !== undefined ) texture.encoding = data.encoding;
				if ( data.minFilter !== undefined ) texture.minFilter = parseConstant( data.minFilter, TEXTURE_FILTER );
				if ( data.magFilter !== undefined ) texture.magFilter = parseConstant( data.magFilter, TEXTURE_FILTER );
				if ( data.anisotropy !== undefined ) texture.anisotropy = data.anisotropy;
				if ( data.flipY !== undefined ) texture.flipY = data.flipY;
				if ( data.premultiplyAlpha !== undefined ) texture.premultiplyAlpha = data.premultiplyAlpha;
				if ( data.unpackAlignment !== undefined ) texture.unpackAlignment = data.unpackAlignment;
				textures[ data.uuid ] = texture;
			}
		}
		return textures;
	},
	parseObject: function ( data, geometries, materials ) {
		let object;
		function getGeometry( name ) {
			if ( geometries[ name ] === undefined ) {
				console.warn( 'THREE.ObjectLoader: Undefined geometry', name );
			}
			return geometries[ name ];
		}
		function getMaterial( name ) {
			if ( name === undefined ) return undefined;
			if ( Array.isArray( name ) ) {
				const array = [];
				for ( let i = 0, l = name.length; i < l; i ++ ) {
					const uuid = name[ i ];
					if ( materials[ uuid ] === undefined ) {
						console.warn( 'THREE.ObjectLoader: Undefined material', uuid );
					}
					array.push( materials[ uuid ] );
				}
				return array;
			}
			if ( materials[ name ] === undefined ) {
				console.warn( 'THREE.ObjectLoader: Undefined material', name );
			}
			return materials[ name ];
		}
		let geometry, material;
		switch ( data.type ) {
			case 'Scene':
				object = new Scene();
				if ( data.background !== undefined ) {
					if ( Number.isInteger( data.background ) ) {
						object.background = new Color( data.background );
					}
				}
				if ( data.fog !== undefined ) {
					if ( data.fog.type === 'Fog' ) {
						object.fog = new Fog( data.fog.color, data.fog.near, data.fog.far );
					} else if ( data.fog.type === 'FogExp2' ) {
						object.fog = new FogExp2( data.fog.color, data.fog.density );
					}
				}
				break;
			case 'PerspectiveCamera':
				object = new PerspectiveCamera( data.fov, data.aspect, data.near, data.far );
				if ( data.focus !== undefined ) object.focus = data.focus;
				if ( data.zoom !== undefined ) object.zoom = data.zoom;
				if ( data.filmGauge !== undefined ) object.filmGauge = data.filmGauge;
				if ( data.filmOffset !== undefined ) object.filmOffset = data.filmOffset;
				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );
				break;
			case 'OrthographicCamera':
				object = new OrthographicCamera( data.left, data.right, data.top, data.bottom, data.near, data.far );
				if ( data.zoom !== undefined ) object.zoom = data.zoom;
				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );
				break;
			case 'AmbientLight':
				object = new AmbientLight( data.color, data.intensity );
				break;
			case 'DirectionalLight':
				object = new DirectionalLight( data.color, data.intensity );
				break;
			case 'PointLight':
				object = new PointLight( data.color, data.intensity, data.distance, data.decay );
				break;
			case 'RectAreaLight':
				object = new RectAreaLight( data.color, data.intensity, data.width, data.height );
				break;
			case 'SpotLight':
				object = new SpotLight( data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay );
				break;
			case 'HemisphereLight':
				object = new HemisphereLight( data.color, data.groundColor, data.intensity );
				break;
			case 'LightProbe':
				object = new LightProbe().fromJSON( data );
				break;
			case 'SkinnedMesh':
				console.warn( 'THREE.ObjectLoader.parseObject() does not support SkinnedMesh yet.' );
			case 'Mesh':
				geometry = getGeometry( data.geometry );
				material = getMaterial( data.material );
				object = new Mesh( geometry, material );
				break;
			case 'InstancedMesh':
				geometry = getGeometry( data.geometry );
				material = getMaterial( data.material );
				const count = data.count;
				const instanceMatrix = data.instanceMatrix;
				object = new InstancedMesh( geometry, material, count );
				object.instanceMatrix = new BufferAttribute( new Float32Array( instanceMatrix.array ), 16 );
				break;
			case 'LOD':
				object = new LOD();
				break;
			case 'Line':
				object = new Line( getGeometry( data.geometry ), getMaterial( data.material ), data.mode );
				break;
			case 'LineLoop':
				object = new LineLoop( getGeometry( data.geometry ), getMaterial( data.material ) );
				break;
			case 'LineSegments':
				object = new LineSegments( getGeometry( data.geometry ), getMaterial( data.material ) );
				break;
			case 'PointCloud':
			case 'Points':
				object = new Points( getGeometry( data.geometry ), getMaterial( data.material ) );
				break;
			case 'Sprite':
				object = new Sprite( getMaterial( data.material ) );
				break;
			case 'Group':
				object = new Group();
				break;
			default:
				object = new Object3D();
		}
		object.uuid = data.uuid;
		if ( data.name !== undefined ) object.name = data.name;
		if ( data.matrix !== undefined ) {
			object.matrix.fromArray( data.matrix );
			if ( data.matrixAutoUpdate !== undefined ) object.matrixAutoUpdate = data.matrixAutoUpdate;
			if ( object.matrixAutoUpdate ) object.matrix.decompose( object.position, object.quaternion, object.scale );
		} else {
			if ( data.position !== undefined ) object.position.fromArray( data.position );
			if ( data.rotation !== undefined ) object.rotation.fromArray( data.rotation );
			if ( data.quaternion !== undefined ) object.quaternion.fromArray( data.quaternion );
			if ( data.scale !== undefined ) object.scale.fromArray( data.scale );
		}
		if ( data.castShadow !== undefined ) object.castShadow = data.castShadow;
		if ( data.receiveShadow !== undefined ) object.receiveShadow = data.receiveShadow;
		if ( data.shadow ) {
			if ( data.shadow.bias !== undefined ) object.shadow.bias = data.shadow.bias;
			if ( data.shadow.normalBias !== undefined ) object.shadow.normalBias = data.shadow.normalBias;
			if ( data.shadow.radius !== undefined ) object.shadow.radius = data.shadow.radius;
			if ( data.shadow.mapSize !== undefined ) object.shadow.mapSize.fromArray( data.shadow.mapSize );
			if ( data.shadow.camera !== undefined ) object.shadow.camera = this.parseObject( data.shadow.camera );
		}
		if ( data.visible !== undefined ) object.visible = data.visible;
		if ( data.frustumCulled !== undefined ) object.frustumCulled = data.frustumCulled;
		if ( data.renderOrder !== undefined ) object.renderOrder = data.renderOrder;
		if ( data.userData !== undefined ) object.userData = data.userData;
		if ( data.layers !== undefined ) object.layers.mask = data.layers;
		if ( data.children !== undefined ) {
			const children = data.children;
			for ( let i = 0; i < children.length; i ++ ) {
				object.add( this.parseObject( children[ i ], geometries, materials ) );
			}
		}
		if ( data.type === 'LOD' ) {
			if ( data.autoUpdate !== undefined ) object.autoUpdate = data.autoUpdate;
			const levels = data.levels;
			for ( let l = 0; l < levels.length; l ++ ) {
				const level = levels[ l ];
				const child = object.getObjectByProperty( 'uuid', level.object );
				if ( child !== undefined ) {
					object.addLevel( child, level.distance );
				}
			}
		}
		return object;
	}
} );
const TEXTURE_MAPPING = {
	UVMapping: UVMapping,
	CubeReflectionMapping: CubeReflectionMapping,
	CubeRefractionMapping: CubeRefractionMapping,
	EquirectangularReflectionMapping: EquirectangularReflectionMapping,
	EquirectangularRefractionMapping: EquirectangularRefractionMapping,
	CubeUVReflectionMapping: CubeUVReflectionMapping,
	CubeUVRefractionMapping: CubeUVRefractionMapping
};
const TEXTURE_WRAPPING = {
	RepeatWrapping: RepeatWrapping,
	ClampToEdgeWrapping: ClampToEdgeWrapping,
	MirroredRepeatWrapping: MirroredRepeatWrapping
};
const TEXTURE_FILTER = {
	NearestFilter: NearestFilter,
	NearestMipmapNearestFilter: NearestMipmapNearestFilter,
	NearestMipmapLinearFilter: NearestMipmapLinearFilter,
	LinearFilter: LinearFilter,
	LinearMipmapNearestFilter: LinearMipmapNearestFilter,
	LinearMipmapLinearFilter: LinearMipmapLinearFilter
};
function ImageBitmapLoader( manager ) {
	if ( typeof createImageBitmap === 'undefined' ) {
		console.warn( 'THREE.ImageBitmapLoader: createImageBitmap() not supported.' );
	}
	if ( typeof fetch === 'undefined' ) {
		console.warn( 'THREE.ImageBitmapLoader: fetch() not supported.' );
	}
	Loader.call( this, manager );
	this.options = { premultiplyAlpha: 'none' };
}
ImageBitmapLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: ImageBitmapLoader,
	isImageBitmapLoader: true,
	setOptions: function setOptions( options ) {
		this.options = options;
		return this;
	},
	load: function ( url, onLoad, onProgress, onError ) {
		if ( url === undefined ) url = '';
		if ( this.path !== undefined ) url = this.path + url;
		url = this.manager.resolveURL( url );
		const scope = this;
		const cached = Cache.get( url );
		if ( cached !== undefined ) {
			scope.manager.itemStart( url );
			setTimeout( function () {
				if ( onLoad ) onLoad( cached );
				scope.manager.itemEnd( url );
			}, 0 );
			return cached;
		}
		fetch( url ).then( function ( res ) {
			return res.blob();
		} ).then( function ( blob ) {
			return createImageBitmap( blob, scope.options );
		} ).then( function ( imageBitmap ) {
			Cache.add( url, imageBitmap );
			if ( onLoad ) onLoad( imageBitmap );
			scope.manager.itemEnd( url );
		} ).catch( function ( e ) {
			if ( onError ) onError( e );
			scope.manager.itemError( url );
			scope.manager.itemEnd( url );
		} );
		scope.manager.itemStart( url );
	}
} );
function ShapePath() {
	this.type = 'ShapePath';
	this.color = new Color();
	this.subPaths = [];
	this.currentPath = null;
}
Object.assign( ShapePath.prototype, {
	moveTo: function ( x, y ) {
		this.currentPath = new Path();
		this.subPaths.push( this.currentPath );
		this.currentPath.moveTo( x, y );
		return this;
	},
	lineTo: function ( x, y ) {
		this.currentPath.lineTo( x, y );
		return this;
	},
	quadraticCurveTo: function ( aCPx, aCPy, aX, aY ) {
		this.currentPath.quadraticCurveTo( aCPx, aCPy, aX, aY );
		return this;
	},
	bezierCurveTo: function ( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {
		this.currentPath.bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY );
		return this;
	},
	splineThru: function ( pts ) {
		this.currentPath.splineThru( pts );
		return this;
	},
	toShapes: function ( isCCW, noHoles ) {
		function toShapesNoHoles( inSubpaths ) {
			const shapes = [];
			for ( let i = 0, l = inSubpaths.length; i < l; i ++ ) {
				const tmpPath = inSubpaths[ i ];
				const tmpShape = new Shape();
				tmpShape.curves = tmpPath.curves;
				shapes.push( tmpShape );
			}
			return shapes;
		}
		function isPointInsidePolygon( inPt, inPolygon ) {
			const polyLen = inPolygon.length;
			let inside = false;
			for ( let p = polyLen - 1, q = 0; q < polyLen; p = q ++ ) {
				let edgeLowPt = inPolygon[ p ];
				let edgeHighPt = inPolygon[ q ];
				let edgeDx = edgeHighPt.x - edgeLowPt.x;
				let edgeDy = edgeHighPt.y - edgeLowPt.y;
				if ( Math.abs( edgeDy ) > Number.EPSILON ) {
					if ( edgeDy < 0 ) {
						edgeLowPt = inPolygon[ q ]; edgeDx = - edgeDx;
						edgeHighPt = inPolygon[ p ]; edgeDy = - edgeDy;
					}
					if ( ( inPt.y < edgeLowPt.y ) || ( inPt.y > edgeHighPt.y ) ) 		continue;
					if ( inPt.y === edgeLowPt.y ) {
						if ( inPt.x === edgeLowPt.x )		return	true;
					} else {
						const perpEdge = edgeDy * ( inPt.x - edgeLowPt.x ) - edgeDx * ( inPt.y - edgeLowPt.y );
						if ( perpEdge === 0 )				return	true;
						if ( perpEdge < 0 ) 				continue;
						inside = ! inside;
					}
				} else {
					if ( inPt.y !== edgeLowPt.y ) 		continue;
					if ( ( ( edgeHighPt.x <= inPt.x ) && ( inPt.x <= edgeLowPt.x ) ) ||
						 ( ( edgeLowPt.x <= inPt.x ) && ( inPt.x <= edgeHighPt.x ) ) )		return	true;
				}
			}
			return	inside;
		}
		const isClockWise = ShapeUtils.isClockWise;
		const subPaths = this.subPaths;
		if ( subPaths.length === 0 ) return [];
		if ( noHoles === true )	return	toShapesNoHoles( subPaths );
		let solid, tmpPath, tmpShape;
		const shapes = [];
		if ( subPaths.length === 1 ) {
			tmpPath = subPaths[ 0 ];
			tmpShape = new Shape();
			tmpShape.curves = tmpPath.curves;
			shapes.push( tmpShape );
			return shapes;
		}
		let holesFirst = ! isClockWise( subPaths[ 0 ].getPoints() );
		holesFirst = isCCW ? ! holesFirst : holesFirst;
		const betterShapeHoles = [];
		const newShapes = [];
		let newShapeHoles = [];
		let mainIdx = 0;
		let tmpPoints;
		newShapes[ mainIdx ] = undefined;
		newShapeHoles[ mainIdx ] = [];
		for ( let i = 0, l = subPaths.length; i < l; i ++ ) {
			tmpPath = subPaths[ i ];
			tmpPoints = tmpPath.getPoints();
			solid = isClockWise( tmpPoints );
			solid = isCCW ? ! solid : solid;
			if ( solid ) {
				if ( ( ! holesFirst ) && ( newShapes[ mainIdx ] ) )	mainIdx ++;
				newShapes[ mainIdx ] = { s: new Shape(), p: tmpPoints };
				newShapes[ mainIdx ].s.curves = tmpPath.curves;
				if ( holesFirst )	mainIdx ++;
				newShapeHoles[ mainIdx ] = [];
			} else {
				newShapeHoles[ mainIdx ].push( { h: tmpPath, p: tmpPoints[ 0 ] } );
			}
		}
		if ( ! newShapes[ 0 ] )	return	toShapesNoHoles( subPaths );
		if ( newShapes.length > 1 ) {
			let ambiguous = false;
			const toChange = [];
			for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {
				betterShapeHoles[ sIdx ] = [];
			}
			for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {
				const sho = newShapeHoles[ sIdx ];
				for ( let hIdx = 0; hIdx < sho.length; hIdx ++ ) {
					const ho = sho[ hIdx ];
					let hole_unassigned = true;
					for ( let s2Idx = 0; s2Idx < newShapes.length; s2Idx ++ ) {
						if ( isPointInsidePolygon( ho.p, newShapes[ s2Idx ].p ) ) {
							if ( sIdx !== s2Idx )	toChange.push( { froms: sIdx, tos: s2Idx, hole: hIdx } );
							if ( hole_unassigned ) {
								hole_unassigned = false;
								betterShapeHoles[ s2Idx ].push( ho );
							} else {
								ambiguous = true;
							}
						}
					}
					if ( hole_unassigned ) {
						betterShapeHoles[ sIdx ].push( ho );
					}
				}
			}
			if ( toChange.length > 0 ) {
				if ( ! ambiguous )	newShapeHoles = betterShapeHoles;
			}
		}
		let tmpHoles;
		for ( let i = 0, il = newShapes.length; i < il; i ++ ) {
			tmpShape = newShapes[ i ].s;
			shapes.push( tmpShape );
			tmpHoles = newShapeHoles[ i ];
			for ( let j = 0, jl = tmpHoles.length; j < jl; j ++ ) {
				tmpShape.holes.push( tmpHoles[ j ].h );
			}
		}
		return shapes;
	}
} );
function Font( data ) {
	this.type = 'Font';
	this.data = data;
}
Object.assign( Font.prototype, {
	isFont: true,
	generateShapes: function ( text, size ) {
		if ( size === undefined ) size = 100;
		const shapes = [];
		const paths = createPaths( text, size, this.data );
		for ( let p = 0, pl = paths.length; p < pl; p ++ ) {
			Array.prototype.push.apply( shapes, paths[ p ].toShapes() );
		}
		return shapes;
	}
} );
function createPaths( text, size, data ) {
	const chars = Array.from ? Array.from( text ) : String( text ).split( '' );
	const scale = size / data.resolution;
	const line_height = ( data.boundingBox.yMax - data.boundingBox.yMin + data.underlineThickness ) * scale;
	const paths = [];
	let offsetX = 0, offsetY = 0;
	for ( let i = 0; i < chars.length; i ++ ) {
		const char = chars[ i ];
		if ( char === '\n' ) {
			offsetX = 0;
			offsetY -= line_height;
		} else {
			const ret = createPath( char, scale, offsetX, offsetY, data );
			offsetX += ret.offsetX;
			paths.push( ret.path );
		}
	}
	return paths;
}
function createPath( char, scale, offsetX, offsetY, data ) {
	const glyph = data.glyphs[ char ] || data.glyphs[ '?' ];
	if ( ! glyph ) {
		console.error( 'THREE.Font: character "' + char + '" does not exists in font family ' + data.familyName + '.' );
		return;
	}
	const path = new ShapePath();
	let x, y, cpx, cpy, cpx1, cpy1, cpx2, cpy2;
	if ( glyph.o ) {
		const outline = glyph._cachedOutline || ( glyph._cachedOutline = glyph.o.split( ' ' ) );
		for ( let i = 0, l = outline.length; i < l; ) {
			const action = outline[ i ++ ];
			switch ( action ) {
				case 'm':
					x = outline[ i ++ ] * scale + offsetX;
					y = outline[ i ++ ] * scale + offsetY;
					path.moveTo( x, y );
					break;
				case 'l':
					x = outline[ i ++ ] * scale + offsetX;
					y = outline[ i ++ ] * scale + offsetY;
					path.lineTo( x, y );
					break;
				case 'q':
					cpx = outline[ i ++ ] * scale + offsetX;
					cpy = outline[ i ++ ] * scale + offsetY;
					cpx1 = outline[ i ++ ] * scale + offsetX;
					cpy1 = outline[ i ++ ] * scale + offsetY;
					path.quadraticCurveTo( cpx1, cpy1, cpx, cpy );
					break;
				case 'b':
					cpx = outline[ i ++ ] * scale + offsetX;
					cpy = outline[ i ++ ] * scale + offsetY;
					cpx1 = outline[ i ++ ] * scale + offsetX;
					cpy1 = outline[ i ++ ] * scale + offsetY;
					cpx2 = outline[ i ++ ] * scale + offsetX;
					cpy2 = outline[ i ++ ] * scale + offsetY;
					path.bezierCurveTo( cpx1, cpy1, cpx2, cpy2, cpx, cpy );
					break;
			}
		}
	}
	return { offsetX: glyph.ha * scale, path: path };
}
function FontLoader( manager ) {
	Loader.call( this, manager );
}
FontLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: FontLoader,
	load: function ( url, onLoad, onProgress, onError ) {
		const scope = this;
		const loader = new FileLoader( this.manager );
		loader.setPath( this.path );
		loader.setRequestHeader( this.requestHeader );
		loader.load( url, function ( text ) {
			let json;
			try {
				json = JSON.parse( text );
			} catch ( e ) {
				console.warn( 'THREE.FontLoader: typeface.js support is being deprecated. Use typeface.json instead.' );
				json = JSON.parse( text.substring( 65, text.length - 2 ) );
			}
			const font = scope.parse( json );
			if ( onLoad ) onLoad( font );
		}, onProgress, onError );
	},
	parse: function ( json ) {
		return new Font( json );
	}
} );
let _context;
const AudioContext = {
	getContext: function () {
		if ( _context === undefined ) {
			_context = new ( window.AudioContext || window.webkitAudioContext )();
		}
		return _context;
	},
	setContext: function ( value ) {
		_context = value;
	}
};
function AudioLoader( manager ) {
	Loader.call( this, manager );
}
AudioLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
	constructor: AudioLoader,
	load: function ( url, onLoad, onProgress, onError ) {
		const scope = this;
		const loader = new FileLoader( scope.manager );
		loader.setResponseType( 'arraybuffer' );
		loader.setPath( scope.path );
		loader.setRequestHeader( scope.requestHeader );
		loader.load( url, function ( buffer ) {
			try {
				const bufferCopy = buffer.slice( 0 );
				const context = AudioContext.getContext();
				context.decodeAudioData( bufferCopy, function ( audioBuffer ) {
					onLoad( audioBuffer );
				} );
			} catch ( e ) {
				if ( onError ) {
					onError( e );
				} else {
					console.error( e );
				}
				scope.manager.itemError( url );
			}
		}, onProgress, onError );
	}
} );
function HemisphereLightProbe( skyColor, groundColor, intensity ) {
	LightProbe.call( this, undefined, intensity );
	const color1 = new Color().set( skyColor );
	const color2 = new Color().set( groundColor );
	const sky = new Vector3( color1.r, color1.g, color1.b );
	const ground = new Vector3( color2.r, color2.g, color2.b );
	const c0 = Math.sqrt( Math.PI );
	const c1 = c0 * Math.sqrt( 0.75 );
	this.sh.coefficients[ 0 ].copy( sky ).add( ground ).multiplyScalar( c0 );
	this.sh.coefficients[ 1 ].copy( sky ).sub( ground ).multiplyScalar( c1 );
}
HemisphereLightProbe.prototype = Object.assign( Object.create( LightProbe.prototype ), {
	constructor: HemisphereLightProbe,
	isHemisphereLightProbe: true,
	copy: function ( source ) {
		LightProbe.prototype.copy.call( this, source );
		return this;
	},
	toJSON: function ( meta ) {
		const data = LightProbe.prototype.toJSON.call( this, meta );
		return data;
	}
} );
function AmbientLightProbe( color, intensity ) {
	LightProbe.call( this, undefined, intensity );
	const color1 = new Color().set( color );
	this.sh.coefficients[ 0 ].set( color1.r, color1.g, color1.b ).multiplyScalar( 2 * Math.sqrt( Math.PI ) );
}
AmbientLightProbe.prototype = Object.assign( Object.create( LightProbe.prototype ), {
	constructor: AmbientLightProbe,
	isAmbientLightProbe: true,
	copy: function ( source ) {
		LightProbe.prototype.copy.call( this, source );
		return this;
	},
	toJSON: function ( meta ) {
		const data = LightProbe.prototype.toJSON.call( this, meta );
		return data;
	}
} );
const _eyeRight = new Matrix4();
const _eyeLeft = new Matrix4();
function StereoCamera() {
	this.type = 'StereoCamera';
	this.aspect = 1;
	this.eyeSep = 0.064;
	this.cameraL = new PerspectiveCamera();
	this.cameraL.layers.enable( 1 );
	this.cameraL.matrixAutoUpdate = false;
	this.cameraR = new PerspectiveCamera();
	this.cameraR.layers.enable( 2 );
	this.cameraR.matrixAutoUpdate = false;
	this._cache = {
		focus: null,
		fov: null,
		aspect: null,
		near: null,
		far: null,
		zoom: null,
		eyeSep: null
	};
}
Object.assign( StereoCamera.prototype, {
	update: function ( camera ) {
		const cache = this._cache;
		const needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov ||
			cache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near ||
			cache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;
		if ( needsUpdate ) {
			cache.focus = camera.focus;
			cache.fov = camera.fov;
			cache.aspect = camera.aspect * this.aspect;
			cache.near = camera.near;
			cache.far = camera.far;
			cache.zoom = camera.zoom;
			cache.eyeSep = this.eyeSep;
			const projectionMatrix = camera.projectionMatrix.clone();
			const eyeSepHalf = cache.eyeSep / 2;
			const eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;
			const ymax = ( cache.near * Math.tan( MathUtils.DEG2RAD * cache.fov * 0.5 ) ) / cache.zoom;
			let xmin, xmax;
			_eyeLeft.elements[ 12 ] = - eyeSepHalf;
			_eyeRight.elements[ 12 ] = eyeSepHalf;
			xmin = - ymax * cache.aspect + eyeSepOnProjection;
			xmax = ymax * cache.aspect + eyeSepOnProjection;
			projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
			projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
			this.cameraL.projectionMatrix.copy( projectionMatrix );
			xmin = - ymax * cache.aspect - eyeSepOnProjection;
			xmax = ymax * cache.aspect - eyeSepOnProjection;
			projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
			projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
			this.cameraR.projectionMatrix.copy( projectionMatrix );
		}
		this.cameraL.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeLeft );
		this.cameraR.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeRight );
	}
} );
class Clock {
	constructor( autoStart ) {
		this.autoStart = ( autoStart !== undefined ) ? autoStart : true;
		this.startTime = 0;
		this.oldTime = 0;
		this.elapsedTime = 0;
		this.running = false;
	}
	start() {
		this.startTime = ( typeof performance === 'undefined' ? Date : performance ).now();
		this.oldTime = this.startTime;
		this.elapsedTime = 0;
		this.running = true;
	}
	stop() {
		this.getElapsedTime();
		this.running = false;
		this.autoStart = false;
	}
	getElapsedTime() {
		this.getDelta();
		return this.elapsedTime;
	}
	getDelta() {
		let diff = 0;
		if ( this.autoStart && ! this.running ) {
			this.start();
			return 0;
		}
		if ( this.running ) {
			const newTime = ( typeof performance === 'undefined' ? Date : performance ).now();
			diff = ( newTime - this.oldTime ) / 1000;
			this.oldTime = newTime;
			this.elapsedTime += diff;
		}
		return diff;
	}
}
const _position$2 = new Vector3();
const _quaternion$3 = new Quaternion();
const _scale$1 = new Vector3();
const _orientation = new Vector3();
class AudioListener extends Object3D {
	constructor() {
		super();
		this.type = 'AudioListener';
		this.context = AudioContext.getContext();
		this.gain = this.context.createGain();
		this.gain.connect( this.context.destination );
		this.filter = null;
		this.timeDelta = 0;
		this._clock = new Clock();
	}
	getInput() {
		return this.gain;
	}
	removeFilter() {
		if ( this.filter !== null ) {
			this.gain.disconnect( this.filter );
			this.filter.disconnect( this.context.destination );
			this.gain.connect( this.context.destination );
			this.filter = null;
		}
		return this;
	}
	getFilter() {
		return this.filter;
	}
	setFilter( value ) {
		if ( this.filter !== null ) {
			this.gain.disconnect( this.filter );
			this.filter.disconnect( this.context.destination );
		} else {
			this.gain.disconnect( this.context.destination );
		}
		this.filter = value;
		this.gain.connect( this.filter );
		this.filter.connect( this.context.destination );
		return this;
	}
	getMasterVolume() {
		return this.gain.gain.value;
	}
	setMasterVolume( value ) {
		this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );
		return this;
	}
	updateMatrixWorld( force ) {
		super.updateMatrixWorld( force );
		const listener = this.context.listener;
		const up = this.up;
		this.timeDelta = this._clock.getDelta();
		this.matrixWorld.decompose( _position$2, _quaternion$3, _scale$1 );
		_orientation.set( 0, 0, - 1 ).applyQuaternion( _quaternion$3 );
		if ( listener.positionX ) {
			const endTime = this.context.currentTime + this.timeDelta;
			listener.positionX.linearRampToValueAtTime( _position$2.x, endTime );
			listener.positionY.linearRampToValueAtTime( _position$2.y, endTime );
			listener.positionZ.linearRampToValueAtTime( _position$2.z, endTime );
			listener.forwardX.linearRampToValueAtTime( _orientation.x, endTime );
			listener.forwardY.linearRampToValueAtTime( _orientation.y, endTime );
			listener.forwardZ.linearRampToValueAtTime( _orientation.z, endTime );
			listener.upX.linearRampToValueAtTime( up.x, endTime );
			listener.upY.linearRampToValueAtTime( up.y, endTime );
			listener.upZ.linearRampToValueAtTime( up.z, endTime );
		} else {
			listener.setPosition( _position$2.x, _position$2.y, _position$2.z );
			listener.setOrientation( _orientation.x, _orientation.y, _orientation.z, up.x, up.y, up.z );
		}
	}
}
class Audio extends Object3D {
	constructor( listener ) {
		super();
		this.type = 'Audio';
		this.listener = listener;
		this.context = listener.context;
		this.gain = this.context.createGain();
		this.gain.connect( listener.getInput() );
		this.autoplay = false;
		this.buffer = null;
		this.detune = 0;
		this.loop = false;
		this.loopStart = 0;
		this.loopEnd = 0;
		this.offset = 0;
		this.duration = undefined;
		this.playbackRate = 1;
		this.isPlaying = false;
		this.hasPlaybackControl = true;
		this.source = null;
		this.sourceType = 'empty';
		this._startedAt = 0;
		this._progress = 0;
		this._connected = false;
		this.filters = [];
	}
	getOutput() {
		return this.gain;
	}
	setNodeSource( audioNode ) {
		this.hasPlaybackControl = false;
		this.sourceType = 'audioNode';
		this.source = audioNode;
		this.connect();
		return this;
	}
	setMediaElementSource( mediaElement ) {
		this.hasPlaybackControl = false;
		this.sourceType = 'mediaNode';
		this.source = this.context.createMediaElementSource( mediaElement );
		this.connect();
		return this;
	}
	setMediaStreamSource( mediaStream ) {
		this.hasPlaybackControl = false;
		this.sourceType = 'mediaStreamNode';
		this.source = this.context.createMediaStreamSource( mediaStream );
		this.connect();
		return this;
	}
	setBuffer( audioBuffer ) {
		this.buffer = audioBuffer;
		this.sourceType = 'buffer';
		if ( this.autoplay ) this.play();
		return this;
	}
	play( delay ) {
		if ( delay === undefined ) delay = 0;
		if ( this.isPlaying === true ) {
			console.warn( 'THREE.Audio: Audio is already playing.' );
			return;
		}
		if ( this.hasPlaybackControl === false ) {
			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;
		}
		this._startedAt = this.context.currentTime + delay;
		const source = this.context.createBufferSource();
		source.buffer = this.buffer;
		source.loop = this.loop;
		source.loopStart = this.loopStart;
		source.loopEnd = this.loopEnd;
		source.onended = this.onEnded.bind( this );
		source.start( this._startedAt, this._progress + this.offset, this.duration );
		this.isPlaying = true;
		this.source = source;
		this.setDetune( this.detune );
		this.setPlaybackRate( this.playbackRate );
		return this.connect();
	}
	pause() {
		if ( this.hasPlaybackControl === false ) {
			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;
		}
		if ( this.isPlaying === true ) {
			this._progress += Math.max( this.context.currentTime - this._startedAt, 0 ) * this.playbackRate;
			if ( this.loop === true ) {
				this._progress = this._progress % ( this.duration || this.buffer.duration );
			}
			this.source.stop();
			this.source.onended = null;
			this.isPlaying = false;
		}
		return this;
	}
	stop() {
		if ( this.hasPlaybackControl === false ) {
			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;
		}
		this._progress = 0;
		this.source.stop();
		this.source.onended = null;
		this.isPlaying = false;
		return this;
	}
	connect() {
		if ( this.filters.length > 0 ) {
			this.source.connect( this.filters[ 0 ] );
			for ( let i = 1, l = this.filters.length; i < l; i ++ ) {
				this.filters[ i - 1 ].connect( this.filters[ i ] );
			}
			this.filters[ this.filters.length - 1 ].connect( this.getOutput() );
		} else {
			this.source.connect( this.getOutput() );
		}
		this._connected = true;
		return this;
	}
	disconnect() {
		if ( this.filters.length > 0 ) {
			this.source.disconnect( this.filters[ 0 ] );
			for ( let i = 1, l = this.filters.length; i < l; i ++ ) {
				this.filters[ i - 1 ].disconnect( this.filters[ i ] );
			}
			this.filters[ this.filters.length - 1 ].disconnect( this.getOutput() );
		} else {
			this.source.disconnect( this.getOutput() );
		}
		this._connected = false;
		return this;
	}
	getFilters() {
		return this.filters;
	}
	setFilters( value ) {
		if ( ! value ) value = [];
		if ( this._connected === true ) {
			this.disconnect();
			this.filters = value;
			this.connect();
		} else {
			this.filters = value;
		}
		return this;
	}
	setDetune( value ) {
		this.detune = value;
		if ( this.source.detune === undefined ) return;
		if ( this.isPlaying === true ) {
			this.source.detune.setTargetAtTime( this.detune, this.context.currentTime, 0.01 );
		}
		return this;
	}
	getDetune() {
		return this.detune;
	}
	getFilter() {
		return this.getFilters()[ 0 ];
	}
	setFilter( filter ) {
		return this.setFilters( filter ? [ filter ] : [] );
	}
	setPlaybackRate( value ) {
		if ( this.hasPlaybackControl === false ) {
			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;
		}
		this.playbackRate = value;
		if ( this.isPlaying === true ) {
			this.source.playbackRate.setTargetAtTime( this.playbackRate, this.context.currentTime, 0.01 );
		}
		return this;
	}
	getPlaybackRate() {
		return this.playbackRate;
	}
	onEnded() {
		this.isPlaying = false;
	}
	getLoop() {
		if ( this.hasPlaybackControl === false ) {
			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return false;
		}
		return this.loop;
	}
	setLoop( value ) {
		if ( this.hasPlaybackControl === false ) {
			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;
		}
		this.loop = value;
		if ( this.isPlaying === true ) {
			this.source.loop = this.loop;
		}
		return this;
	}
	setLoopStart( value ) {
		this.loopStart = value;
		return this;
	}
	setLoopEnd( value ) {
		this.loopEnd = value;
		return this;
	}
	getVolume() {
		return this.gain.gain.value;
	}
	setVolume( value ) {
		this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );
		return this;
	}
}
const _position$3 = new Vector3();
const _quaternion$4 = new Quaternion();
const _scale$2 = new Vector3();
const _orientation$1 = new Vector3();
class PositionalAudio extends Audio {
	constructor( listener ) {
		super( listener );
		this.panner = this.context.createPanner();
		this.panner.panningModel = 'HRTF';
		this.panner.connect( this.gain );
	}
	getOutput() {
		return this.panner;
	}
	getRefDistance() {
		return this.panner.refDistance;
	}
	setRefDistance( value ) {
		this.panner.refDistance = value;
		return this;
	}
	getRolloffFactor() {
		return this.panner.rolloffFactor;
	}
	setRolloffFactor( value ) {
		this.panner.rolloffFactor = value;
		return this;
	}
	getDistanceModel() {
		return this.panner.distanceModel;
	}
	setDistanceModel( value ) {
		this.panner.distanceModel = value;
		return this;
	}
	getMaxDistance() {
		return this.panner.maxDistance;
	}
	setMaxDistance( value ) {
		this.panner.maxDistance = value;
		return this;
	}
	setDirectionalCone( coneInnerAngle, coneOuterAngle, coneOuterGain ) {
		this.panner.coneInnerAngle = coneInnerAngle;
		this.panner.coneOuterAngle = coneOuterAngle;
		this.panner.coneOuterGain = coneOuterGain;
		return this;
	}
	updateMatrixWorld( force ) {
		super.updateMatrixWorld( force );
		if ( this.hasPlaybackControl === true && this.isPlaying === false ) return;
		this.matrixWorld.decompose( _position$3, _quaternion$4, _scale$2 );
		_orientation$1.set( 0, 0, 1 ).applyQuaternion( _quaternion$4 );
		const panner = this.panner;
		if ( panner.positionX ) {
			const endTime = this.context.currentTime + this.listener.timeDelta;
			panner.positionX.linearRampToValueAtTime( _position$3.x, endTime );
			panner.positionY.linearRampToValueAtTime( _position$3.y, endTime );
			panner.positionZ.linearRampToValueAtTime( _position$3.z, endTime );
			panner.orientationX.linearRampToValueAtTime( _orientation$1.x, endTime );
			panner.orientationY.linearRampToValueAtTime( _orientation$1.y, endTime );
			panner.orientationZ.linearRampToValueAtTime( _orientation$1.z, endTime );
		} else {
			panner.setPosition( _position$3.x, _position$3.y, _position$3.z );
			panner.setOrientation( _orientation$1.x, _orientation$1.y, _orientation$1.z );
		}
	}
}
class AudioAnalyser {
	constructor( audio, fftSize ) {
		this.analyser = audio.context.createAnalyser();
		this.analyser.fftSize = fftSize !== undefined ? fftSize : 2048;
		this.data = new Uint8Array( this.analyser.frequencyBinCount );
		audio.getOutput().connect( this.analyser );
	}
	getFrequencyData() {
		this.analyser.getByteFrequencyData( this.data );
		return this.data;
	}
	getAverageFrequency() {
		let value = 0;
		const data = this.getFrequencyData();
		for ( let i = 0; i < data.length; i ++ ) {
			value += data[ i ];
		}
		return value / data.length;
	}
}
function PropertyMixer( binding, typeName, valueSize ) {
	this.binding = binding;
	this.valueSize = valueSize;
	let mixFunction,
		mixFunctionAdditive,
		setIdentity;
	switch ( typeName ) {
		case 'quaternion':
			mixFunction = this._slerp;
			mixFunctionAdditive = this._slerpAdditive;
			setIdentity = this._setAdditiveIdentityQuaternion;
			this.buffer = new Float64Array( valueSize * 6 );
			this._workIndex = 5;
			break;
		case 'string':
		case 'bool':
			mixFunction = this._select;
			mixFunctionAdditive = this._select;
			setIdentity = this._setAdditiveIdentityOther;
			this.buffer = new Array( valueSize * 5 );
			break;
		default:
			mixFunction = this._lerp;
			mixFunctionAdditive = this._lerpAdditive;
			setIdentity = this._setAdditiveIdentityNumeric;
			this.buffer = new Float64Array( valueSize * 5 );
	}
	this._mixBufferRegion = mixFunction;
	this._mixBufferRegionAdditive = mixFunctionAdditive;
	this._setIdentity = setIdentity;
	this._origIndex = 3;
	this._addIndex = 4;
	this.cumulativeWeight = 0;
	this.cumulativeWeightAdditive = 0;
	this.useCount = 0;
	this.referenceCount = 0;
}
Object.assign( PropertyMixer.prototype, {
	accumulate: function ( accuIndex, weight ) {
		const buffer = this.buffer,
			stride = this.valueSize,
			offset = accuIndex * stride + stride;
		let currentWeight = this.cumulativeWeight;
		if ( currentWeight === 0 ) {
			for ( let i = 0; i !== stride; ++ i ) {
				buffer[ offset + i ] = buffer[ i ];
			}
			currentWeight = weight;
		} else {
			currentWeight += weight;
			const mix = weight / currentWeight;
			this._mixBufferRegion( buffer, offset, 0, mix, stride );
		}
		this.cumulativeWeight = currentWeight;
	},
	accumulateAdditive: function ( weight ) {
		const buffer = this.buffer,
			stride = this.valueSize,
			offset = stride * this._addIndex;
		if ( this.cumulativeWeightAdditive === 0 ) {
			this._setIdentity();
		}
		this._mixBufferRegionAdditive( buffer, offset, 0, weight, stride );
		this.cumulativeWeightAdditive += weight;
	},
	apply: function ( accuIndex ) {
		const stride = this.valueSize,
			buffer = this.buffer,
			offset = accuIndex * stride + stride,
			weight = this.cumulativeWeight,
			weightAdditive = this.cumulativeWeightAdditive,
			binding = this.binding;
		this.cumulativeWeight = 0;
		this.cumulativeWeightAdditive = 0;
		if ( weight < 1 ) {
			const originalValueOffset = stride * this._origIndex;
			this._mixBufferRegion(
				buffer, offset, originalValueOffset, 1 - weight, stride );
		}
		if ( weightAdditive > 0 ) {
			this._mixBufferRegionAdditive( buffer, offset, this._addIndex * stride, 1, stride );
		}
		for ( let i = stride, e = stride + stride; i !== e; ++ i ) {
			if ( buffer[ i ] !== buffer[ i + stride ] ) {
				binding.setValue( buffer, offset );
				break;
			}
		}
	},
	saveOriginalState: function () {
		const binding = this.binding;
		const buffer = this.buffer,
			stride = this.valueSize,
			originalValueOffset = stride * this._origIndex;
		binding.getValue( buffer, originalValueOffset );
		for ( let i = stride, e = originalValueOffset; i !== e; ++ i ) {
			buffer[ i ] = buffer[ originalValueOffset + ( i % stride ) ];
		}
		this._setIdentity();
		this.cumulativeWeight = 0;
		this.cumulativeWeightAdditive = 0;
	},
	restoreOriginalState: function () {
		const originalValueOffset = this.valueSize * 3;
		this.binding.setValue( this.buffer, originalValueOffset );
	},
	_setAdditiveIdentityNumeric: function () {
		const startIndex = this._addIndex * this.valueSize;
		const endIndex = startIndex + this.valueSize;
		for ( let i = startIndex; i < endIndex; i ++ ) {
			this.buffer[ i ] = 0;
		}
	},
	_setAdditiveIdentityQuaternion: function () {
		this._setAdditiveIdentityNumeric();
		this.buffer[ this._addIndex * this.valueSize + 3 ] = 1;
	},
	_setAdditiveIdentityOther: function () {
		const startIndex = this._origIndex * this.valueSize;
		const targetIndex = this._addIndex * this.valueSize;
		for ( let i = 0; i < this.valueSize; i ++ ) {
			this.buffer[ targetIndex + i ] = this.buffer[ startIndex + i ];
		}
	},
	_select: function ( buffer, dstOffset, srcOffset, t, stride ) {
		if ( t >= 0.5 ) {
			for ( let i = 0; i !== stride; ++ i ) {
				buffer[ dstOffset + i ] = buffer[ srcOffset + i ];
			}
		}
	},
	_slerp: function ( buffer, dstOffset, srcOffset, t ) {
		Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t );
	},
	_slerpAdditive: function ( buffer, dstOffset, srcOffset, t, stride ) {
		const workOffset = this._workIndex * stride;
		Quaternion.multiplyQuaternionsFlat( buffer, workOffset, buffer, dstOffset, buffer, srcOffset );
		Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t );
	},
	_lerp: function ( buffer, dstOffset, srcOffset, t, stride ) {
		const s = 1 - t;
		for ( let i = 0; i !== stride; ++ i ) {
			const j = dstOffset + i;
			buffer[ j ] = buffer[ j ] * s + buffer[ srcOffset + i ] * t;
		}
	},
	_lerpAdditive: function ( buffer, dstOffset, srcOffset, t, stride ) {
		for ( let i = 0; i !== stride; ++ i ) {
			const j = dstOffset + i;
			buffer[ j ] = buffer[ j ] + buffer[ srcOffset + i ] * t;
		}
	}
} );
const _RESERVED_CHARS_RE = '\\[\\]\\.:\\/';
const _reservedRe = new RegExp( '[' + _RESERVED_CHARS_RE + ']', 'g' );
const _wordChar = '[^' + _RESERVED_CHARS_RE + ']';
const _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace( '\\.', '' ) + ']';
const _directoryRe = /((?:WC+[\/:])*)/.source.replace( 'WC', _wordChar );
const _nodeRe = /(WCOD+)?/.source.replace( 'WCOD', _wordCharOrDot );
const _objectRe = /(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace( 'WC', _wordChar );
const _propertyRe = /\.(WC+)(?:\[(.+)\])?/.source.replace( 'WC', _wordChar );
const _trackRe = new RegExp( ''
	+ '^'
	+ _directoryRe
	+ _nodeRe
	+ _objectRe
	+ _propertyRe
	+ '$'
);
const _supportedObjectNames = [ 'material', 'materials', 'bones' ];
function Composite( targetGroup, path, optionalParsedPath ) {
	const parsedPath = optionalParsedPath || PropertyBinding.parseTrackName( path );
	this._targetGroup = targetGroup;
	this._bindings = targetGroup.subscribe_( path, parsedPath );
}
Object.assign( Composite.prototype, {
	getValue: function ( array, offset ) {
		this.bind();
		const firstValidIndex = this._targetGroup.nCachedObjects_,
			binding = this._bindings[ firstValidIndex ];
		if ( binding !== undefined ) binding.getValue( array, offset );
	},
	setValue: function ( array, offset ) {
		const bindings = this._bindings;
		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {
			bindings[ i ].setValue( array, offset );
		}
	},
	bind: function () {
		const bindings = this._bindings;
		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {
			bindings[ i ].bind();
		}
	},
	unbind: function () {
		const bindings = this._bindings;
		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {
			bindings[ i ].unbind();
		}
	}
} );
function PropertyBinding( rootNode, path, parsedPath ) {
	this.path = path;
	this.parsedPath = parsedPath || PropertyBinding.parseTrackName( path );
	this.node = PropertyBinding.findNode( rootNode, this.parsedPath.nodeName ) || rootNode;
	this.rootNode = rootNode;
}
Object.assign( PropertyBinding, {
	Composite: Composite,
	create: function ( root, path, parsedPath ) {
		if ( ! ( root && root.isAnimationObjectGroup ) ) {
			return new PropertyBinding( root, path, parsedPath );
		} else {
			return new PropertyBinding.Composite( root, path, parsedPath );
		}
	},
	sanitizeNodeName: function ( name ) {
		return name.replace( /\s/g, '_' ).replace( _reservedRe, '' );
	},
	parseTrackName: function ( trackName ) {
		const matches = _trackRe.exec( trackName );
		if ( ! matches ) {
			throw new Error( 'PropertyBinding: Cannot parse trackName: ' + trackName );
		}
		const results = {
			nodeName: matches[ 2 ],
			objectName: matches[ 3 ],
			objectIndex: matches[ 4 ],
			propertyName: matches[ 5 ],
			propertyIndex: matches[ 6 ]
		};
		const lastDot = results.nodeName && results.nodeName.lastIndexOf( '.' );
		if ( lastDot !== undefined && lastDot !== - 1 ) {
			const objectName = results.nodeName.substring( lastDot + 1 );
			if ( _supportedObjectNames.indexOf( objectName ) !== - 1 ) {
				results.nodeName = results.nodeName.substring( 0, lastDot );
				results.objectName = objectName;
			}
		}
		if ( results.propertyName === null || results.propertyName.length === 0 ) {
			throw new Error( 'PropertyBinding: can not parse propertyName from trackName: ' + trackName );
		}
		return results;
	},
	findNode: function ( root, nodeName ) {
		if ( ! nodeName || nodeName === "" || nodeName === "." || nodeName === - 1 || nodeName === root.name || nodeName === root.uuid ) {
			return root;
		}
		if ( root.skeleton ) {
			const bone = root.skeleton.getBoneByName( nodeName );
			if ( bone !== undefined ) {
				return bone;
			}
		}
		if ( root.children ) {
			const searchNodeSubtree = function ( children ) {
				for ( let i = 0; i < children.length; i ++ ) {
					const childNode = children[ i ];
					if ( childNode.name === nodeName || childNode.uuid === nodeName ) {
						return childNode;
					}
					const result = searchNodeSubtree( childNode.children );
					if ( result ) return result;
				}
				return null;
			};
			const subTreeNode = searchNodeSubtree( root.children );
			if ( subTreeNode ) {
				return subTreeNode;
			}
		}
		return null;
	}
} );
Object.assign( PropertyBinding.prototype, {
	_getValue_unavailable: function () {},
	_setValue_unavailable: function () {},
	BindingType: {
		Direct: 0,
		EntireArray: 1,
		ArrayElement: 2,
		HasFromToArray: 3
	},
	Versioning: {
		None: 0,
		NeedsUpdate: 1,
		MatrixWorldNeedsUpdate: 2
	},
	GetterByBindingType: [
		function getValue_direct( buffer, offset ) {
			buffer[ offset ] = this.node[ this.propertyName ];
		},
		function getValue_array( buffer, offset ) {
			const source = this.resolvedProperty;
			for ( let i = 0, n = source.length; i !== n; ++ i ) {
				buffer[ offset ++ ] = source[ i ];
			}
		},
		function getValue_arrayElement( buffer, offset ) {
			buffer[ offset ] = this.resolvedProperty[ this.propertyIndex ];
		},
		function getValue_toArray( buffer, offset ) {
			this.resolvedProperty.toArray( buffer, offset );
		}
	],
	SetterByBindingTypeAndVersioning: [
		[
			function setValue_direct( buffer, offset ) {
				this.targetObject[ this.propertyName ] = buffer[ offset ];
			},
			function setValue_direct_setNeedsUpdate( buffer, offset ) {
				this.targetObject[ this.propertyName ] = buffer[ offset ];
				this.targetObject.needsUpdate = true;
			},
			function setValue_direct_setMatrixWorldNeedsUpdate( buffer, offset ) {
				this.targetObject[ this.propertyName ] = buffer[ offset ];
				this.targetObject.matrixWorldNeedsUpdate = true;
			}
		], [
			function setValue_array( buffer, offset ) {
				const dest = this.resolvedProperty;
				for ( let i = 0, n = dest.length; i !== n; ++ i ) {
					dest[ i ] = buffer[ offset ++ ];
				}
			},
			function setValue_array_setNeedsUpdate( buffer, offset ) {
				const dest = this.resolvedProperty;
				for ( let i = 0, n = dest.length; i !== n; ++ i ) {
					dest[ i ] = buffer[ offset ++ ];
				}
				this.targetObject.needsUpdate = true;
			},
			function setValue_array_setMatrixWorldNeedsUpdate( buffer, offset ) {
				const dest = this.resolvedProperty;
				for ( let i = 0, n = dest.length; i !== n; ++ i ) {
					dest[ i ] = buffer[ offset ++ ];
				}
				this.targetObject.matrixWorldNeedsUpdate = true;
			}
		], [
			function setValue_arrayElement( buffer, offset ) {
				this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
			},
			function setValue_arrayElement_setNeedsUpdate( buffer, offset ) {
				this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
				this.targetObject.needsUpdate = true;
			},
			function setValue_arrayElement_setMatrixWorldNeedsUpdate( buffer, offset ) {
				this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
				this.targetObject.matrixWorldNeedsUpdate = true;
			}
		], [
			function setValue_fromArray( buffer, offset ) {
				this.resolvedProperty.fromArray( buffer, offset );
			},
			function setValue_fromArray_setNeedsUpdate( buffer, offset ) {
				this.resolvedProperty.fromArray( buffer, offset );
				this.targetObject.needsUpdate = true;
			},
			function setValue_fromArray_setMatrixWorldNeedsUpdate( buffer, offset ) {
				this.resolvedProperty.fromArray( buffer, offset );
				this.targetObject.matrixWorldNeedsUpdate = true;
			}
		]
	],
	getValue: function getValue_unbound( targetArray, offset ) {
		this.bind();
		this.getValue( targetArray, offset );
	},
	setValue: function getValue_unbound( sourceArray, offset ) {
		this.bind();
		this.setValue( sourceArray, offset );
	},
	bind: function () {
		let targetObject = this.node;
		const parsedPath = this.parsedPath;
		const objectName = parsedPath.objectName;
		const propertyName = parsedPath.propertyName;
		let propertyIndex = parsedPath.propertyIndex;
		if ( ! targetObject ) {
			targetObject = PropertyBinding.findNode( this.rootNode, parsedPath.nodeName ) || this.rootNode;
			this.node = targetObject;
		}
		this.getValue = this._getValue_unavailable;
		this.setValue = this._setValue_unavailable;
		if ( ! targetObject ) {
			console.error( 'THREE.PropertyBinding: Trying to update node for track: ' + this.path + ' but it wasn\'t found.' );
			return;
		}
		if ( objectName ) {
			let objectIndex = parsedPath.objectIndex;
			switch ( objectName ) {
				case 'materials':
					if ( ! targetObject.material ) {
						console.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );
						return;
					}
					if ( ! targetObject.material.materials ) {
						console.error( 'THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this );
						return;
					}
					targetObject = targetObject.material.materials;
					break;
				case 'bones':
					if ( ! targetObject.skeleton ) {
						console.error( 'THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this );
						return;
					}
					targetObject = targetObject.skeleton.bones;
					for ( let i = 0; i < targetObject.length; i ++ ) {
						if ( targetObject[ i ].name === objectIndex ) {
							objectIndex = i;
							break;
						}
					}
					break;
				default:
					if ( targetObject[ objectName ] === undefined ) {
						console.error( 'THREE.PropertyBinding: Can not bind to objectName of node undefined.', this );
						return;
					}
					targetObject = targetObject[ objectName ];
			}
			if ( objectIndex !== undefined ) {
				if ( targetObject[ objectIndex ] === undefined ) {
					console.error( 'THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject );
					return;
				}
				targetObject = targetObject[ objectIndex ];
			}
		}
		const nodeProperty = targetObject[ propertyName ];
		if ( nodeProperty === undefined ) {
			const nodeName = parsedPath.nodeName;
			console.error( 'THREE.PropertyBinding: Trying to update property for track: ' + nodeName +
				'.' + propertyName + ' but it wasn\'t found.', targetObject );
			return;
		}
		let versioning = this.Versioning.None;
		this.targetObject = targetObject;
		if ( targetObject.needsUpdate !== undefined ) {
			versioning = this.Versioning.NeedsUpdate;
		} else if ( targetObject.matrixWorldNeedsUpdate !== undefined ) {
			versioning = this.Versioning.MatrixWorldNeedsUpdate;
		}
		let bindingType = this.BindingType.Direct;
		if ( propertyIndex !== undefined ) {
			if ( propertyName === "morphTargetInfluences" ) {
				if ( ! targetObject.geometry ) {
					console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this );
					return;
				}
				if ( targetObject.geometry.isBufferGeometry ) {
					if ( ! targetObject.geometry.morphAttributes ) {
						console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this );
						return;
					}
					if ( targetObject.morphTargetDictionary[ propertyIndex ] !== undefined ) {
						propertyIndex = targetObject.morphTargetDictionary[ propertyIndex ];
					}
				} else {
					console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences on THREE.Geometry. Use THREE.BufferGeometry instead.', this );
					return;
				}
			}
			bindingType = this.BindingType.ArrayElement;
			this.resolvedProperty = nodeProperty;
			this.propertyIndex = propertyIndex;
		} else if ( nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined ) {
			bindingType = this.BindingType.HasFromToArray;
			this.resolvedProperty = nodeProperty;
		} else if ( Array.isArray( nodeProperty ) ) {
			bindingType = this.BindingType.EntireArray;
			this.resolvedProperty = nodeProperty;
		} else {
			this.propertyName = propertyName;
		}
		this.getValue = this.GetterByBindingType[ bindingType ];
		this.setValue = this.SetterByBindingTypeAndVersioning[ bindingType ][ versioning ];
	},
	unbind: function () {
		this.node = null;
		this.getValue = this._getValue_unbound;
		this.setValue = this._setValue_unbound;
	}
} );
Object.assign( PropertyBinding.prototype, {
	_getValue_unbound: PropertyBinding.prototype.getValue,
	_setValue_unbound: PropertyBinding.prototype.setValue,
} );
function AnimationObjectGroup() {
	this.uuid = MathUtils.generateUUID();
	this._objects = Array.prototype.slice.call( arguments );
	this.nCachedObjects_ = 0;
	const indices = {};
	this._indicesByUUID = indices;
	for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
		indices[ arguments[ i ].uuid ] = i;
	}
	this._paths = [];
	this._parsedPaths = [];
	this._bindings = [];
	this._bindingsIndicesByPath = {};
	const scope = this;
	this.stats = {
		objects: {
			get total() {
				return scope._objects.length;
			},
			get inUse() {
				return this.total - scope.nCachedObjects_;
			}
		},
		get bindingsPerObject() {
			return scope._bindings.length;
		}
	};
}
Object.assign( AnimationObjectGroup.prototype, {
	isAnimationObjectGroup: true,
	add: function () {
		const objects = this._objects,
			indicesByUUID = this._indicesByUUID,
			paths = this._paths,
			parsedPaths = this._parsedPaths,
			bindings = this._bindings,
			nBindings = bindings.length;
		let knownObject = undefined,
			nObjects = objects.length,
			nCachedObjects = this.nCachedObjects_;
		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
			const object = arguments[ i ],
				uuid = object.uuid;
			let index = indicesByUUID[ uuid ];
			if ( index === undefined ) {
				index = nObjects ++;
				indicesByUUID[ uuid ] = index;
				objects.push( object );
				for ( let j = 0, m = nBindings; j !== m; ++ j ) {
					bindings[ j ].push( new PropertyBinding( object, paths[ j ], parsedPaths[ j ] ) );
				}
			} else if ( index < nCachedObjects ) {
				knownObject = objects[ index ];
				const firstActiveIndex = -- nCachedObjects,
					lastCachedObject = objects[ firstActiveIndex ];
				indicesByUUID[ lastCachedObject.uuid ] = index;
				objects[ index ] = lastCachedObject;
				indicesByUUID[ uuid ] = firstActiveIndex;
				objects[ firstActiveIndex ] = object;
				for ( let j = 0, m = nBindings; j !== m; ++ j ) {
					const bindingsForPath = bindings[ j ],
						lastCached = bindingsForPath[ firstActiveIndex ];
					let binding = bindingsForPath[ index ];
					bindingsForPath[ index ] = lastCached;
					if ( binding === undefined ) {
						binding = new PropertyBinding( object, paths[ j ], parsedPaths[ j ] );
					}
					bindingsForPath[ firstActiveIndex ] = binding;
				}
			} else if ( objects[ index ] !== knownObject ) {
				console.error( 'THREE.AnimationObjectGroup: Different objects with the same UUID ' +
					'detected. Clean the caches or recreate your infrastructure when reloading scenes.' );
			}
		}
		this.nCachedObjects_ = nCachedObjects;
	},
	remove: function () {
		const objects = this._objects,
			indicesByUUID = this._indicesByUUID,
			bindings = this._bindings,
			nBindings = bindings.length;
		let nCachedObjects = this.nCachedObjects_;
		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
			const object = arguments[ i ],
				uuid = object.uuid,
				index = indicesByUUID[ uuid ];
			if ( index !== undefined && index >= nCachedObjects ) {
				const lastCachedIndex = nCachedObjects ++,
					firstActiveObject = objects[ lastCachedIndex ];
				indicesByUUID[ firstActiveObject.uuid ] = index;
				objects[ index ] = firstActiveObject;
				indicesByUUID[ uuid ] = lastCachedIndex;
				objects[ lastCachedIndex ] = object;
				for ( let j = 0, m = nBindings; j !== m; ++ j ) {
					const bindingsForPath = bindings[ j ],
						firstActive = bindingsForPath[ lastCachedIndex ],
						binding = bindingsForPath[ index ];
					bindingsForPath[ index ] = firstActive;
					bindingsForPath[ lastCachedIndex ] = binding;
				}
			}
		}
		this.nCachedObjects_ = nCachedObjects;
	},
	uncache: function () {
		const objects = this._objects,
			indicesByUUID = this._indicesByUUID,
			bindings = this._bindings,
			nBindings = bindings.length;
		let nCachedObjects = this.nCachedObjects_,
			nObjects = objects.length;
		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
			const object = arguments[ i ],
				uuid = object.uuid,
				index = indicesByUUID[ uuid ];
			if ( index !== undefined ) {
				delete indicesByUUID[ uuid ];
				if ( index < nCachedObjects ) {
					const firstActiveIndex = -- nCachedObjects,
						lastCachedObject = objects[ firstActiveIndex ],
						lastIndex = -- nObjects,
						lastObject = objects[ lastIndex ];
					indicesByUUID[ lastCachedObject.uuid ] = index;
					objects[ index ] = lastCachedObject;
					indicesByUUID[ lastObject.uuid ] = firstActiveIndex;
					objects[ firstActiveIndex ] = lastObject;
					objects.pop();
					for ( let j = 0, m = nBindings; j !== m; ++ j ) {
						const bindingsForPath = bindings[ j ],
							lastCached = bindingsForPath[ firstActiveIndex ],
							last = bindingsForPath[ lastIndex ];
						bindingsForPath[ index ] = lastCached;
						bindingsForPath[ firstActiveIndex ] = last;
						bindingsForPath.pop();
					}
				} else {
					const lastIndex = -- nObjects,
						lastObject = objects[ lastIndex ];
					indicesByUUID[ lastObject.uuid ] = index;
					objects[ index ] = lastObject;
					objects.pop();
					for ( let j = 0, m = nBindings; j !== m; ++ j ) {
						const bindingsForPath = bindings[ j ];
						bindingsForPath[ index ] = bindingsForPath[ lastIndex ];
						bindingsForPath.pop();
					}
				}
			}
		}
		this.nCachedObjects_ = nCachedObjects;
	},
	subscribe_: function ( path, parsedPath ) {
		const indicesByPath = this._bindingsIndicesByPath;
		let index = indicesByPath[ path ];
		const bindings = this._bindings;
		if ( index !== undefined ) return bindings[ index ];
		const paths = this._paths,
			parsedPaths = this._parsedPaths,
			objects = this._objects,
			nObjects = objects.length,
			nCachedObjects = this.nCachedObjects_,
			bindingsForPath = new Array( nObjects );
		index = bindings.length;
		indicesByPath[ path ] = index;
		paths.push( path );
		parsedPaths.push( parsedPath );
		bindings.push( bindingsForPath );
		for ( let i = nCachedObjects, n = objects.length; i !== n; ++ i ) {
			const object = objects[ i ];
			bindingsForPath[ i ] = new PropertyBinding( object, path, parsedPath );
		}
		return bindingsForPath;
	},
	unsubscribe_: function ( path ) {
		const indicesByPath = this._bindingsIndicesByPath,
			index = indicesByPath[ path ];
		if ( index !== undefined ) {
			const paths = this._paths,
				parsedPaths = this._parsedPaths,
				bindings = this._bindings,
				lastBindingsIndex = bindings.length - 1,
				lastBindings = bindings[ lastBindingsIndex ],
				lastBindingsPath = path[ lastBindingsIndex ];
			indicesByPath[ lastBindingsPath ] = index;
			bindings[ index ] = lastBindings;
			bindings.pop();
			parsedPaths[ index ] = parsedPaths[ lastBindingsIndex ];
			parsedPaths.pop();
			paths[ index ] = paths[ lastBindingsIndex ];
			paths.pop();
		}
	}
} );
class AnimationAction {
	constructor( mixer, clip, localRoot, blendMode ) {
		this._mixer = mixer;
		this._clip = clip;
		this._localRoot = localRoot || null;
		this.blendMode = blendMode || clip.blendMode;
		const tracks = clip.tracks,
			nTracks = tracks.length,
			interpolants = new Array( nTracks );
		const interpolantSettings = {
			endingStart: ZeroCurvatureEnding,
			endingEnd: ZeroCurvatureEnding
		};
		for ( let i = 0; i !== nTracks; ++ i ) {
			const interpolant = tracks[ i ].createInterpolant( null );
			interpolants[ i ] = interpolant;
			interpolant.settings = interpolantSettings;
		}
		this._interpolantSettings = interpolantSettings;
		this._interpolants = interpolants;
		this._propertyBindings = new Array( nTracks );
		this._cacheIndex = null;
		this._byClipCacheIndex = null;
		this._timeScaleInterpolant = null;
		this._weightInterpolant = null;
		this.loop = LoopRepeat;
		this._loopCount = - 1;
		this._startTime = null;
		this.time = 0;
		this.timeScale = 1;
		this._effectiveTimeScale = 1;
		this.weight = 1;
		this._effectiveWeight = 1;
		this.repetitions = Infinity;
		this.paused = false;
		this.enabled = true;
		this.clampWhenFinished = false;
		this.zeroSlopeAtStart = true;
		this.zeroSlopeAtEnd = true;
	}
	play() {
		this._mixer._activateAction( this );
		return this;
	}
	stop() {
		this._mixer._deactivateAction( this );
		return this.reset();
	}
	reset() {
		this.paused = false;
		this.enabled = true;
		this.time = 0;
		this._loopCount = - 1;
		this._startTime = null;
		return this.stopFading().stopWarping();
	}
	isRunning() {
		return this.enabled && ! this.paused && this.timeScale !== 0 &&
			this._startTime === null && this._mixer._isActiveAction( this );
	}
	isScheduled() {
		return this._mixer._isActiveAction( this );
	}
	startAt( time ) {
		this._startTime = time;
		return this;
	}
	setLoop( mode, repetitions ) {
		this.loop = mode;
		this.repetitions = repetitions;
		return this;
	}
	setEffectiveWeight( weight ) {
		this.weight = weight;
		this._effectiveWeight = this.enabled ? weight : 0;
		return this.stopFading();
	}
	getEffectiveWeight() {
		return this._effectiveWeight;
	}
	fadeIn( duration ) {
		return this._scheduleFading( duration, 0, 1 );
	}
	fadeOut( duration ) {
		return this._scheduleFading( duration, 1, 0 );
	}
	crossFadeFrom( fadeOutAction, duration, warp ) {
		fadeOutAction.fadeOut( duration );
		this.fadeIn( duration );
		if ( warp ) {
			const fadeInDuration = this._clip.duration,
				fadeOutDuration = fadeOutAction._clip.duration,
				startEndRatio = fadeOutDuration / fadeInDuration,
				endStartRatio = fadeInDuration / fadeOutDuration;
			fadeOutAction.warp( 1.0, startEndRatio, duration );
			this.warp( endStartRatio, 1.0, duration );
		}
		return this;
	}
	crossFadeTo( fadeInAction, duration, warp ) {
		return fadeInAction.crossFadeFrom( this, duration, warp );
	}
	stopFading() {
		const weightInterpolant = this._weightInterpolant;
		if ( weightInterpolant !== null ) {
			this._weightInterpolant = null;
			this._mixer._takeBackControlInterpolant( weightInterpolant );
		}
		return this;
	}
	setEffectiveTimeScale( timeScale ) {
		this.timeScale = timeScale;
		this._effectiveTimeScale = this.paused ? 0 : timeScale;
		return this.stopWarping();
	}
	getEffectiveTimeScale() {
		return this._effectiveTimeScale;
	}
	setDuration( duration ) {
		this.timeScale = this._clip.duration / duration;
		return this.stopWarping();
	}
	syncWith( action ) {
		this.time = action.time;
		this.timeScale = action.timeScale;
		return this.stopWarping();
	}
	halt( duration ) {
		return this.warp( this._effectiveTimeScale, 0, duration );
	}
	warp( startTimeScale, endTimeScale, duration ) {
		const mixer = this._mixer,
			now = mixer.time,
			timeScale = this.timeScale;
		let interpolant = this._timeScaleInterpolant;
		if ( interpolant === null ) {
			interpolant = mixer._lendControlInterpolant();
			this._timeScaleInterpolant = interpolant;
		}
		const times = interpolant.parameterPositions,
			values = interpolant.sampleValues;
		times[ 0 ] = now;
		times[ 1 ] = now + duration;
		values[ 0 ] = startTimeScale / timeScale;
		values[ 1 ] = endTimeScale / timeScale;
		return this;
	}
	stopWarping() {
		const timeScaleInterpolant = this._timeScaleInterpolant;
		if ( timeScaleInterpolant !== null ) {
			this._timeScaleInterpolant = null;
			this._mixer._takeBackControlInterpolant( timeScaleInterpolant );
		}
		return this;
	}
	getMixer() {
		return this._mixer;
	}
	getClip() {
		return this._clip;
	}
	getRoot() {
		return this._localRoot || this._mixer._root;
	}
	_update( time, deltaTime, timeDirection, accuIndex ) {
		if ( ! this.enabled ) {
			this._updateWeight( time );
			return;
		}
		const startTime = this._startTime;
		if ( startTime !== null ) {
			const timeRunning = ( time - startTime ) * timeDirection;
			if ( timeRunning < 0 || timeDirection === 0 ) {
				return;
			}
			this._startTime = null;
			deltaTime = timeDirection * timeRunning;
		}
		deltaTime *= this._updateTimeScale( time );
		const clipTime = this._updateTime( deltaTime );
		const weight = this._updateWeight( time );
		if ( weight > 0 ) {
			const interpolants = this._interpolants;
			const propertyMixers = this._propertyBindings;
			switch ( this.blendMode ) {
				case AdditiveAnimationBlendMode:
					for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {
						interpolants[ j ].evaluate( clipTime );
						propertyMixers[ j ].accumulateAdditive( weight );
					}
					break;
				case NormalAnimationBlendMode:
				default:
					for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {
						interpolants[ j ].evaluate( clipTime );
						propertyMixers[ j ].accumulate( accuIndex, weight );
					}
			}
		}
	}
	_updateWeight( time ) {
		let weight = 0;
		if ( this.enabled ) {
			weight = this.weight;
			const interpolant = this._weightInterpolant;
			if ( interpolant !== null ) {
				const interpolantValue = interpolant.evaluate( time )[ 0 ];
				weight *= interpolantValue;
				if ( time > interpolant.parameterPositions[ 1 ] ) {
					this.stopFading();
					if ( interpolantValue === 0 ) {
						this.enabled = false;
					}
				}
			}
		}
		this._effectiveWeight = weight;
		return weight;
	}
	_updateTimeScale( time ) {
		let timeScale = 0;
		if ( ! this.paused ) {
			timeScale = this.timeScale;
			const interpolant = this._timeScaleInterpolant;
			if ( interpolant !== null ) {
				const interpolantValue = interpolant.evaluate( time )[ 0 ];
				timeScale *= interpolantValue;
				if ( time > interpolant.parameterPositions[ 1 ] ) {
					this.stopWarping();
					if ( timeScale === 0 ) {
						this.paused = true;
					} else {
						this.timeScale = timeScale;
					}
				}
			}
		}
		this._effectiveTimeScale = timeScale;
		return timeScale;
	}
	_updateTime( deltaTime ) {
		const duration = this._clip.duration;
		const loop = this.loop;
		let time = this.time + deltaTime;
		let loopCount = this._loopCount;
		const pingPong = ( loop === LoopPingPong );
		if ( deltaTime === 0 ) {
			if ( loopCount === - 1 ) return time;
			return ( pingPong && ( loopCount & 1 ) === 1 ) ? duration - time : time;
		}
		if ( loop === LoopOnce ) {
			if ( loopCount === - 1 ) {
				this._loopCount = 0;
				this._setEndings( true, true, false );
			}
			handle_stop: {
				if ( time >= duration ) {
					time = duration;
				} else if ( time < 0 ) {
					time = 0;
				} else {
					this.time = time;
					break handle_stop;
				}
				if ( this.clampWhenFinished ) this.paused = true;
				else this.enabled = false;
				this.time = time;
				this._mixer.dispatchEvent( {
					type: 'finished', action: this,
					direction: deltaTime < 0 ? - 1 : 1
				} );
			}
		} else {
			if ( loopCount === - 1 ) {
				if ( deltaTime >= 0 ) {
					loopCount = 0;
					this._setEndings( true, this.repetitions === 0, pingPong );
				} else {
					this._setEndings( this.repetitions === 0, true, pingPong );
				}
			}
			if ( time >= duration || time < 0 ) {
				const loopDelta = Math.floor( time / duration );
				time -= duration * loopDelta;
				loopCount += Math.abs( loopDelta );
				const pending = this.repetitions - loopCount;
				if ( pending <= 0 ) {
					if ( this.clampWhenFinished ) this.paused = true;
					else this.enabled = false;
					time = deltaTime > 0 ? duration : 0;
					this.time = time;
					this._mixer.dispatchEvent( {
						type: 'finished', action: this,
						direction: deltaTime > 0 ? 1 : - 1
					} );
				} else {
					if ( pending === 1 ) {
						const atStart = deltaTime < 0;
						this._setEndings( atStart, ! atStart, pingPong );
					} else {
						this._setEndings( false, false, pingPong );
					}
					this._loopCount = loopCount;
					this.time = time;
					this._mixer.dispatchEvent( {
						type: 'loop', action: this, loopDelta: loopDelta
					} );
				}
			} else {
				this.time = time;
			}
			if ( pingPong && ( loopCount & 1 ) === 1 ) {
				return duration - time;
			}
		}
		return time;
	}
	_setEndings( atStart, atEnd, pingPong ) {
		const settings = this._interpolantSettings;
		if ( pingPong ) {
			settings.endingStart = ZeroSlopeEnding;
			settings.endingEnd = ZeroSlopeEnding;
		} else {
			if ( atStart ) {
				settings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;
			} else {
				settings.endingStart = WrapAroundEnding;
			}
			if ( atEnd ) {
				settings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;
			} else {
				settings.endingEnd 	 = WrapAroundEnding;
			}
		}
	}
	_scheduleFading( duration, weightNow, weightThen ) {
		const mixer = this._mixer, now = mixer.time;
		let interpolant = this._weightInterpolant;
		if ( interpolant === null ) {
			interpolant = mixer._lendControlInterpolant();
			this._weightInterpolant = interpolant;
		}
		const times = interpolant.parameterPositions,
			values = interpolant.sampleValues;
		times[ 0 ] = now;
		values[ 0 ] = weightNow;
		times[ 1 ] = now + duration;
		values[ 1 ] = weightThen;
		return this;
	}
}
function AnimationMixer( root ) {
	this._root = root;
	this._initMemoryManager();
	this._accuIndex = 0;
	this.time = 0;
	this.timeScale = 1.0;
}
AnimationMixer.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
	constructor: AnimationMixer,
	_bindAction: function ( action, prototypeAction ) {
		const root = action._localRoot || this._root,
			tracks = action._clip.tracks,
			nTracks = tracks.length,
			bindings = action._propertyBindings,
			interpolants = action._interpolants,
			rootUuid = root.uuid,
			bindingsByRoot = this._bindingsByRootAndName;
		let bindingsByName = bindingsByRoot[ rootUuid ];
		if ( bindingsByName === undefined ) {
			bindingsByName = {};
			bindingsByRoot[ rootUuid ] = bindingsByName;
		}
		for ( let i = 0; i !== nTracks; ++ i ) {
			const track = tracks[ i ],
				trackName = track.name;
			let binding = bindingsByName[ trackName ];
			if ( binding !== undefined ) {
				bindings[ i ] = binding;
			} else {
				binding = bindings[ i ];
				if ( binding !== undefined ) {
					if ( binding._cacheIndex === null ) {
						++ binding.referenceCount;
						this._addInactiveBinding( binding, rootUuid, trackName );
					}
					continue;
				}
				const path = prototypeAction && prototypeAction.
					_propertyBindings[ i ].binding.parsedPath;
				binding = new PropertyMixer(
					PropertyBinding.create( root, trackName, path ),
					track.ValueTypeName, track.getValueSize() );
				++ binding.referenceCount;
				this._addInactiveBinding( binding, rootUuid, trackName );
				bindings[ i ] = binding;
			}
			interpolants[ i ].resultBuffer = binding.buffer;
		}
	},
	_activateAction: function ( action ) {
		if ( ! this._isActiveAction( action ) ) {
			if ( action._cacheIndex === null ) {
				const rootUuid = ( action._localRoot || this._root ).uuid,
					clipUuid = action._clip.uuid,
					actionsForClip = this._actionsByClip[ clipUuid ];
				this._bindAction( action,
					actionsForClip && actionsForClip.knownActions[ 0 ] );
				this._addInactiveAction( action, clipUuid, rootUuid );
			}
			const bindings = action._propertyBindings;
			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {
				const binding = bindings[ i ];
				if ( binding.useCount ++ === 0 ) {
					this._lendBinding( binding );
					binding.saveOriginalState();
				}
			}
			this._lendAction( action );
		}
	},
	_deactivateAction: function ( action ) {
		if ( this._isActiveAction( action ) ) {
			const bindings = action._propertyBindings;
			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {
				const binding = bindings[ i ];
				if ( -- binding.useCount === 0 ) {
					binding.restoreOriginalState();
					this._takeBackBinding( binding );
				}
			}
			this._takeBackAction( action );
		}
	},
	_initMemoryManager: function () {
		this._actions = [];
		this._nActiveActions = 0;
		this._actionsByClip = {};
		this._bindings = [];
		this._nActiveBindings = 0;
		this._bindingsByRootAndName = {};
		this._controlInterpolants = [];
		this._nActiveControlInterpolants = 0;
		const scope = this;
		this.stats = {
			actions: {
				get total() {
					return scope._actions.length;
				},
				get inUse() {
					return scope._nActiveActions;
				}
			},
			bindings: {
				get total() {
					return scope._bindings.length;
				},
				get inUse() {
					return scope._nActiveBindings;
				}
			},
			controlInterpolants: {
				get total() {
					return scope._controlInterpolants.length;
				},
				get inUse() {
					return scope._nActiveControlInterpolants;
				}
			}
		};
	},
	_isActiveAction: function ( action ) {
		const index = action._cacheIndex;
		return index !== null && index < this._nActiveActions;
	},
	_addInactiveAction: function ( action, clipUuid, rootUuid ) {
		const actions = this._actions,
			actionsByClip = this._actionsByClip;
		let actionsForClip = actionsByClip[ clipUuid ];
		if ( actionsForClip === undefined ) {
			actionsForClip = {
				knownActions: [ action ],
				actionByRoot: {}
			};
			action._byClipCacheIndex = 0;
			actionsByClip[ clipUuid ] = actionsForClip;
		} else {
			const knownActions = actionsForClip.knownActions;
			action._byClipCacheIndex = knownActions.length;
			knownActions.push( action );
		}
		action._cacheIndex = actions.length;
		actions.push( action );
		actionsForClip.actionByRoot[ rootUuid ] = action;
	},
	_removeInactiveAction: function ( action ) {
		const actions = this._actions,
			lastInactiveAction = actions[ actions.length - 1 ],
			cacheIndex = action._cacheIndex;
		lastInactiveAction._cacheIndex = cacheIndex;
		actions[ cacheIndex ] = lastInactiveAction;
		actions.pop();
		action._cacheIndex = null;
		const clipUuid = action._clip.uuid,
			actionsByClip = this._actionsByClip,
			actionsForClip = actionsByClip[ clipUuid ],
			knownActionsForClip = actionsForClip.knownActions,
			lastKnownAction =
				knownActionsForClip[ knownActionsForClip.length - 1 ],
			byClipCacheIndex = action._byClipCacheIndex;
		lastKnownAction._byClipCacheIndex = byClipCacheIndex;
		knownActionsForClip[ byClipCacheIndex ] = lastKnownAction;
		knownActionsForClip.pop();
		action._byClipCacheIndex = null;
		const actionByRoot = actionsForClip.actionByRoot,
			rootUuid = ( action._localRoot || this._root ).uuid;
		delete actionByRoot[ rootUuid ];
		if ( knownActionsForClip.length === 0 ) {
			delete actionsByClip[ clipUuid ];
		}
		this._removeInactiveBindingsForAction( action );
	},
	_removeInactiveBindingsForAction: function ( action ) {
		const bindings = action._propertyBindings;
		for ( let i = 0, n = bindings.length; i !== n; ++ i ) {
			const binding = bindings[ i ];
			if ( -- binding.referenceCount === 0 ) {
				this._removeInactiveBinding( binding );
			}
		}
	},
	_lendAction: function ( action ) {
		const actions = this._actions,
			prevIndex = action._cacheIndex,
			lastActiveIndex = this._nActiveActions ++,
			firstInactiveAction = actions[ lastActiveIndex ];
		action._cacheIndex = lastActiveIndex;
		actions[ lastActiveIndex ] = action;
		firstInactiveAction._cacheIndex = prevIndex;
		actions[ prevIndex ] = firstInactiveAction;
	},
	_takeBackAction: function ( action ) {
		const actions = this._actions,
			prevIndex = action._cacheIndex,
			firstInactiveIndex = -- this._nActiveActions,
			lastActiveAction = actions[ firstInactiveIndex ];
		action._cacheIndex = firstInactiveIndex;
		actions[ firstInactiveIndex ] = action;
		lastActiveAction._cacheIndex = prevIndex;
		actions[ prevIndex ] = lastActiveAction;
	},
	_addInactiveBinding: function ( binding, rootUuid, trackName ) {
		const bindingsByRoot = this._bindingsByRootAndName,
			bindings = this._bindings;
		let bindingByName = bindingsByRoot[ rootUuid ];
		if ( bindingByName === undefined ) {
			bindingByName = {};
			bindingsByRoot[ rootUuid ] = bindingByName;
		}
		bindingByName[ trackName ] = binding;
		binding._cacheIndex = bindings.length;
		bindings.push( binding );
	},
	_removeInactiveBinding: function ( binding ) {
		const bindings = this._bindings,
			propBinding = binding.binding,
			rootUuid = propBinding.rootNode.uuid,
			trackName = propBinding.path,
			bindingsByRoot = this._bindingsByRootAndName,
			bindingByName = bindingsByRoot[ rootUuid ],
			lastInactiveBinding = bindings[ bindings.length - 1 ],
			cacheIndex = binding._cacheIndex;
		lastInactiveBinding._cacheIndex = cacheIndex;
		bindings[ cacheIndex ] = lastInactiveBinding;
		bindings.pop();
		delete bindingByName[ trackName ];
		if ( Object.keys( bindingByName ).length === 0 ) {
			delete bindingsByRoot[ rootUuid ];
		}
	},
	_lendBinding: function ( binding ) {
		const bindings = this._bindings,
			prevIndex = binding._cacheIndex,
			lastActiveIndex = this._nActiveBindings ++,
			firstInactiveBinding = bindings[ lastActiveIndex ];
		binding._cacheIndex = lastActiveIndex;
		bindings[ lastActiveIndex ] = binding;
		firstInactiveBinding._cacheIndex = prevIndex;
		bindings[ prevIndex ] = firstInactiveBinding;
	},
	_takeBackBinding: function ( binding ) {
		const bindings = this._bindings,
			prevIndex = binding._cacheIndex,
			firstInactiveIndex = -- this._nActiveBindings,
			lastActiveBinding = bindings[ firstInactiveIndex ];
		binding._cacheIndex = firstInactiveIndex;
		bindings[ firstInactiveIndex ] = binding;
		lastActiveBinding._cacheIndex = prevIndex;
		bindings[ prevIndex ] = lastActiveBinding;
	},
	_lendControlInterpolant: function () {
		const interpolants = this._controlInterpolants,
			lastActiveIndex = this._nActiveControlInterpolants ++;
		let interpolant = interpolants[ lastActiveIndex ];
		if ( interpolant === undefined ) {
			interpolant = new LinearInterpolant(
				new Float32Array( 2 ), new Float32Array( 2 ),
				1, this._controlInterpolantsResultBuffer );
			interpolant.__cacheIndex = lastActiveIndex;
			interpolants[ lastActiveIndex ] = interpolant;
		}
		return interpolant;
	},
	_takeBackControlInterpolant: function ( interpolant ) {
		const interpolants = this._controlInterpolants,
			prevIndex = interpolant.__cacheIndex,
			firstInactiveIndex = -- this._nActiveControlInterpolants,
			lastActiveInterpolant = interpolants[ firstInactiveIndex ];
		interpolant.__cacheIndex = firstInactiveIndex;
		interpolants[ firstInactiveIndex ] = interpolant;
		lastActiveInterpolant.__cacheIndex = prevIndex;
		interpolants[ prevIndex ] = lastActiveInterpolant;
	},
	_controlInterpolantsResultBuffer: new Float32Array( 1 ),
	clipAction: function ( clip, optionalRoot, blendMode ) {
		const root = optionalRoot || this._root,
			rootUuid = root.uuid;
		let clipObject = typeof clip === 'string' ? AnimationClip.findByName( root, clip ) : clip;
		const clipUuid = clipObject !== null ? clipObject.uuid : clip;
		const actionsForClip = this._actionsByClip[ clipUuid ];
		let prototypeAction = null;
		if ( blendMode === undefined ) {
			if ( clipObject !== null ) {
				blendMode = clipObject.blendMode;
			} else {
				blendMode = NormalAnimationBlendMode;
			}
		}
		if ( actionsForClip !== undefined ) {
			const existingAction = actionsForClip.actionByRoot[ rootUuid ];
			if ( existingAction !== undefined && existingAction.blendMode === blendMode ) {
				return existingAction;
			}
			prototypeAction = actionsForClip.knownActions[ 0 ];
			if ( clipObject === null )
				clipObject = prototypeAction._clip;
		}
		if ( clipObject === null ) return null;
		const newAction = new AnimationAction( this, clipObject, optionalRoot, blendMode );
		this._bindAction( newAction, prototypeAction );
		this._addInactiveAction( newAction, clipUuid, rootUuid );
		return newAction;
	},
	existingAction: function ( clip, optionalRoot ) {
		const root = optionalRoot || this._root,
			rootUuid = root.uuid,
			clipObject = typeof clip === 'string' ?
				AnimationClip.findByName( root, clip ) : clip,
			clipUuid = clipObject ? clipObject.uuid : clip,
			actionsForClip = this._actionsByClip[ clipUuid ];
		if ( actionsForClip !== undefined ) {
			return actionsForClip.actionByRoot[ rootUuid ] || null;
		}
		return null;
	},
	stopAllAction: function () {
		const actions = this._actions,
			nActions = this._nActiveActions;
		for ( let i = nActions - 1; i >= 0; -- i ) {
			actions[ i ].stop();
		}
		return this;
	},
	update: function ( deltaTime ) {
		deltaTime *= this.timeScale;
		const actions = this._actions,
			nActions = this._nActiveActions,
			time = this.time += deltaTime,
			timeDirection = Math.sign( deltaTime ),
			accuIndex = this._accuIndex ^= 1;
		for ( let i = 0; i !== nActions; ++ i ) {
			const action = actions[ i ];
			action._update( time, deltaTime, timeDirection, accuIndex );
		}
		const bindings = this._bindings,
			nBindings = this._nActiveBindings;
		for ( let i = 0; i !== nBindings; ++ i ) {
			bindings[ i ].apply( accuIndex );
		}
		return this;
	},
	setTime: function ( timeInSeconds ) {
		this.time = 0;
		for ( let i = 0; i < this._actions.length; i ++ ) {
			this._actions[ i ].time = 0;
		}
		return this.update( timeInSeconds );
	},
	getRoot: function () {
		return this._root;
	},
	uncacheClip: function ( clip ) {
		const actions = this._actions,
			clipUuid = clip.uuid,
			actionsByClip = this._actionsByClip,
			actionsForClip = actionsByClip[ clipUuid ];
		if ( actionsForClip !== undefined ) {
			const actionsToRemove = actionsForClip.knownActions;
			for ( let i = 0, n = actionsToRemove.length; i !== n; ++ i ) {
				const action = actionsToRemove[ i ];
				this._deactivateAction( action );
				const cacheIndex = action._cacheIndex,
					lastInactiveAction = actions[ actions.length - 1 ];
				action._cacheIndex = null;
				action._byClipCacheIndex = null;
				lastInactiveAction._cacheIndex = cacheIndex;
				actions[ cacheIndex ] = lastInactiveAction;
				actions.pop();
				this._removeInactiveBindingsForAction( action );
			}
			delete actionsByClip[ clipUuid ];
		}
	},
	uncacheRoot: function ( root ) {
		const rootUuid = root.uuid,
			actionsByClip = this._actionsByClip;
		for ( const clipUuid in actionsByClip ) {
			const actionByRoot = actionsByClip[ clipUuid ].actionByRoot,
				action = actionByRoot[ rootUuid ];
			if ( action !== undefined ) {
				this._deactivateAction( action );
				this._removeInactiveAction( action );
			}
		}
		const bindingsByRoot = this._bindingsByRootAndName,
			bindingByName = bindingsByRoot[ rootUuid ];
		if ( bindingByName !== undefined ) {
			for ( const trackName in bindingByName ) {
				const binding = bindingByName[ trackName ];
				binding.restoreOriginalState();
				this._removeInactiveBinding( binding );
			}
		}
	},
	uncacheAction: function ( clip, optionalRoot ) {
		const action = this.existingAction( clip, optionalRoot );
		if ( action !== null ) {
			this._deactivateAction( action );
			this._removeInactiveAction( action );
		}
	}
} );
class Uniform {
	constructor( value ) {
		if ( typeof value === 'string' ) {
			console.warn( 'THREE.Uniform: Type parameter is no longer needed.' );
			value = arguments[ 1 ];
		}
		this.value = value;
	}
	clone() {
		return new Uniform( this.value.clone === undefined ? this.value : this.value.clone() );
	}
}
function InstancedInterleavedBuffer( array, stride, meshPerAttribute ) {
	InterleavedBuffer.call( this, array, stride );
	this.meshPerAttribute = meshPerAttribute || 1;
}
InstancedInterleavedBuffer.prototype = Object.assign( Object.create( InterleavedBuffer.prototype ), {
	constructor: InstancedInterleavedBuffer,
	isInstancedInterleavedBuffer: true,
	copy: function ( source ) {
		InterleavedBuffer.prototype.copy.call( this, source );
		this.meshPerAttribute = source.meshPerAttribute;
		return this;
	},
	clone: function ( data ) {
		const ib = InterleavedBuffer.prototype.clone.call( this, data );
		ib.meshPerAttribute = this.meshPerAttribute;
		return ib;
	},
	toJSON: function ( data ) {
		const json = InterleavedBuffer.prototype.toJSON.call( this, data );
		json.isInstancedInterleavedBuffer = true;
		json.meshPerAttribute = this.meshPerAttribute;
		return json;
	}
} );
function GLBufferAttribute( buffer, type, itemSize, elementSize, count ) {
	this.buffer = buffer;
	this.type = type;
	this.itemSize = itemSize;
	this.elementSize = elementSize;
	this.count = count;
	this.version = 0;
}
Object.defineProperty( GLBufferAttribute.prototype, 'needsUpdate', {
	set: function ( value ) {
		if ( value === true ) this.version ++;
	}
} );
Object.assign( GLBufferAttribute.prototype, {
	isGLBufferAttribute: true,
	setBuffer: function ( buffer ) {
		this.buffer = buffer;
		return this;
	},
	setType: function ( type, elementSize ) {
		this.type = type;
		this.elementSize = elementSize;
		return this;
	},
	setItemSize: function ( itemSize ) {
		this.itemSize = itemSize;
		return this;
	},
	setCount: function ( count ) {
		this.count = count;
		return this;
	},
} );
function Raycaster( origin, direction, near, far ) {
	this.ray = new Ray( origin, direction );
	this.near = near || 0;
	this.far = far || Infinity;
	this.camera = null;
	this.layers = new Layers();
	this.params = {
		Mesh: {},
		Line: { threshold: 1 },
		LOD: {},
		Points: { threshold: 1 },
		Sprite: {}
	};
	Object.defineProperties( this.params, {
		PointCloud: {
			get: function () {
				console.warn( 'THREE.Raycaster: params.PointCloud has been renamed to params.Points.' );
				return this.Points;
			}
		}
	} );
}
function ascSort( a, b ) {
	return a.distance - b.distance;
}
function intersectObject( object, raycaster, intersects, recursive ) {
	if ( object.layers.test( raycaster.layers ) ) {
		object.raycast( raycaster, intersects );
	}
	if ( recursive === true ) {
		const children = object.children;
		for ( let i = 0, l = children.length; i < l; i ++ ) {
			intersectObject( children[ i ], raycaster, intersects, true );
		}
	}
}
Object.assign( Raycaster.prototype, {
	set: function ( origin, direction ) {
		this.ray.set( origin, direction );
	},
	setFromCamera: function ( coords, camera ) {
		if ( ( camera && camera.isPerspectiveCamera ) ) {
			this.ray.origin.setFromMatrixPosition( camera.matrixWorld );
			this.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();
			this.camera = camera;
		} else if ( ( camera && camera.isOrthographicCamera ) ) {
			this.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera );
			this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );
			this.camera = camera;
		} else {
			console.error( 'THREE.Raycaster: Unsupported camera type.' );
		}
	},
	intersectObject: function ( object, recursive, optionalTarget ) {
		const intersects = optionalTarget || [];
		intersectObject( object, this, intersects, recursive );
		intersects.sort( ascSort );
		return intersects;
	},
	intersectObjects: function ( objects, recursive, optionalTarget ) {
		const intersects = optionalTarget || [];
		if ( Array.isArray( objects ) === false ) {
			console.warn( 'THREE.Raycaster.intersectObjects: objects is not an Array.' );
			return intersects;
		}
		for ( let i = 0, l = objects.length; i < l; i ++ ) {
			intersectObject( objects[ i ], this, intersects, recursive );
		}
		intersects.sort( ascSort );
		return intersects;
	}
} );
class Spherical {
	constructor( radius = 1, phi = 0, theta = 0 ) {
		this.radius = radius;
		this.phi = phi;
		this.theta = theta;
		return this;
	}
	set( radius, phi, theta ) {
		this.radius = radius;
		this.phi = phi;
		this.theta = theta;
		return this;
	}
	clone() {
		return new this.constructor().copy( this );
	}
	copy( other ) {
		this.radius = other.radius;
		this.phi = other.phi;
		this.theta = other.theta;
		return this;
	}
	makeSafe() {
		const EPS = 0.000001;
		this.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );
		return this;
	}
	setFromVector3( v ) {
		return this.setFromCartesianCoords( v.x, v.y, v.z );
	}
	setFromCartesianCoords( x, y, z ) {
		this.radius = Math.sqrt( x * x + y * y + z * z );
		if ( this.radius === 0 ) {
			this.theta = 0;
			this.phi = 0;
		} else {
			this.theta = Math.atan2( x, z );
			this.phi = Math.acos( MathUtils.clamp( y / this.radius, - 1, 1 ) );
		}
		return this;
	}
}
class Cylindrical {
	constructor( radius, theta, y ) {
		this.radius = ( radius !== undefined ) ? radius : 1.0;
		this.theta = ( theta !== undefined ) ? theta : 0;
		this.y = ( y !== undefined ) ? y : 0;
		return this;
	}
	set( radius, theta, y ) {
		this.radius = radius;
		this.theta = theta;
		this.y = y;
		return this;
	}
	clone() {
		return new this.constructor().copy( this );
	}
	copy( other ) {
		this.radius = other.radius;
		this.theta = other.theta;
		this.y = other.y;
		return this;
	}
	setFromVector3( v ) {
		return this.setFromCartesianCoords( v.x, v.y, v.z );
	}
	setFromCartesianCoords( x, y, z ) {
		this.radius = Math.sqrt( x * x + z * z );
		this.theta = Math.atan2( x, z );
		this.y = y;
		return this;
	}
}
const _vector$7 = new Vector2();
class Box2 {
	constructor( min, max ) {
		Object.defineProperty( this, 'isBox2', { value: true } );
		this.min = ( min !== undefined ) ? min : new Vector2( + Infinity, + Infinity );
		this.max = ( max !== undefined ) ? max : new Vector2( - Infinity, - Infinity );
	}
	set( min, max ) {
		this.min.copy( min );
		this.max.copy( max );
		return this;
	}
	setFromPoints( points ) {
		this.makeEmpty();
		for ( let i = 0, il = points.length; i < il; i ++ ) {
			this.expandByPoint( points[ i ] );
		}
		return this;
	}
	setFromCenterAndSize( center, size ) {
		const halfSize = _vector$7.copy( size ).multiplyScalar( 0.5 );
		this.min.copy( center ).sub( halfSize );
		this.max.copy( center ).add( halfSize );
		return this;
	}
	clone() {
		return new this.constructor().copy( this );
	}
	copy( box ) {
		this.min.copy( box.min );
		this.max.copy( box.max );
		return this;
	}
	makeEmpty() {
		this.min.x = this.min.y = + Infinity;
		this.max.x = this.max.y = - Infinity;
		return this;
	}
	isEmpty() {
		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );
	}
	getCenter( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Box2: .getCenter() target is now required' );
			target = new Vector2();
		}
		return this.isEmpty() ? target.set( 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );
	}
	getSize( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Box2: .getSize() target is now required' );
			target = new Vector2();
		}
		return this.isEmpty() ? target.set( 0, 0 ) : target.subVectors( this.max, this.min );
	}
	expandByPoint( point ) {
		this.min.min( point );
		this.max.max( point );
		return this;
	}
	expandByVector( vector ) {
		this.min.sub( vector );
		this.max.add( vector );
		return this;
	}
	expandByScalar( scalar ) {
		this.min.addScalar( - scalar );
		this.max.addScalar( scalar );
		return this;
	}
	containsPoint( point ) {
		return point.x < this.min.x || point.x > this.max.x ||
			point.y < this.min.y || point.y > this.max.y ? false : true;
	}
	containsBox( box ) {
		return this.min.x <= box.min.x && box.max.x <= this.max.x &&
			this.min.y <= box.min.y && box.max.y <= this.max.y;
	}
	getParameter( point, target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Box2: .getParameter() target is now required' );
			target = new Vector2();
		}
		return target.set(
			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
			( point.y - this.min.y ) / ( this.max.y - this.min.y )
		);
	}
	intersectsBox( box ) {
		return box.max.x < this.min.x || box.min.x > this.max.x ||
			box.max.y < this.min.y || box.min.y > this.max.y ? false : true;
	}
	clampPoint( point, target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Box2: .clampPoint() target is now required' );
			target = new Vector2();
		}
		return target.copy( point ).clamp( this.min, this.max );
	}
	distanceToPoint( point ) {
		const clampedPoint = _vector$7.copy( point ).clamp( this.min, this.max );
		return clampedPoint.sub( point ).length();
	}
	intersect( box ) {
		this.min.max( box.min );
		this.max.min( box.max );
		return this;
	}
	union( box ) {
		this.min.min( box.min );
		this.max.max( box.max );
		return this;
	}
	translate( offset ) {
		this.min.add( offset );
		this.max.add( offset );
		return this;
	}
	equals( box ) {
		return box.min.equals( this.min ) && box.max.equals( this.max );
	}
}
const _startP = new Vector3();
const _startEnd = new Vector3();
class Line3 {
	constructor( start, end ) {
		this.start = ( start !== undefined ) ? start : new Vector3();
		this.end = ( end !== undefined ) ? end : new Vector3();
	}
	set( start, end ) {
		this.start.copy( start );
		this.end.copy( end );
		return this;
	}
	clone() {
		return new this.constructor().copy( this );
	}
	copy( line ) {
		this.start.copy( line.start );
		this.end.copy( line.end );
		return this;
	}
	getCenter( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Line3: .getCenter() target is now required' );
			target = new Vector3();
		}
		return target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );
	}
	delta( target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Line3: .delta() target is now required' );
			target = new Vector3();
		}
		return target.subVectors( this.end, this.start );
	}
	distanceSq() {
		return this.start.distanceToSquared( this.end );
	}
	distance() {
		return this.start.distanceTo( this.end );
	}
	at( t, target ) {
		if ( target === undefined ) {
			console.warn( 'THREE.Line3: .at() target is now required' );
			target = new Vector3();
		}
		return this.delta( target ).multiplyScalar( t ).add( this.start );
	}
	closestPointToPointParameter( point, clampToLine ) {
		_startP.subVectors( point, this.start );
		_startEnd.subVectors( this.end, this.start );
		const startEnd2 = _startEnd.dot( _startEnd );
		const startEnd_startP = _startEnd.dot( _startP );
		let t = startEnd_startP / startEnd2;
		if ( clampToLine ) {
			t = MathUtils.clamp( t, 0, 1 );
		}
		return t;
	}
	closestPointToPoint( point, clampToLine, target ) {
		const t = this.closestPointToPointParameter( point, clampToLine );
		if ( target === undefined ) {
			console.warn( 'THREE.Line3: .closestPointToPoint() target is now required' );
			target = new Vector3();
		}
		return this.delta( target ).multiplyScalar( t ).add( this.start );
	}
	applyMatrix4( matrix ) {
		this.start.applyMatrix4( matrix );
		this.end.applyMatrix4( matrix );
		return this;
	}
	equals( line ) {
		return line.start.equals( this.start ) && line.end.equals( this.end );
	}
}
function ImmediateRenderObject( material ) {
	Object3D.call( this );
	this.material = material;
	this.render = function (  ) {};
	this.hasPositions = false;
	this.hasNormals = false;
	this.hasColors = false;
	this.hasUvs = false;
	this.positionArray = null;
	this.normalArray = null;
	this.colorArray = null;
	this.uvArray = null;
	this.count = 0;
}
ImmediateRenderObject.prototype = Object.create( Object3D.prototype );
ImmediateRenderObject.prototype.constructor = ImmediateRenderObject;
ImmediateRenderObject.prototype.isImmediateRenderObject = true;
const _vector$8 = new Vector3();
class SpotLightHelper extends Object3D {
	constructor( light, color ) {
		super();
		this.light = light;
		this.light.updateMatrixWorld();
		this.matrix = light.matrixWorld;
		this.matrixAutoUpdate = false;
		this.color = color;
		const geometry = new BufferGeometry();
		const positions = [
			0, 0, 0, 	0, 0, 1,
			0, 0, 0, 	1, 0, 1,
			0, 0, 0,	- 1, 0, 1,
			0, 0, 0, 	0, 1, 1,
			0, 0, 0, 	0, - 1, 1
		];
		for ( let i = 0, j = 1, l = 32; i < l; i ++, j ++ ) {
			const p1 = ( i / l ) * Math.PI * 2;
			const p2 = ( j / l ) * Math.PI * 2;
			positions.push(
				Math.cos( p1 ), Math.sin( p1 ), 1,
				Math.cos( p2 ), Math.sin( p2 ), 1
			);
		}
		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
		const material = new LineBasicMaterial( { fog: false, toneMapped: false } );
		this.cone = new LineSegments( geometry, material );
		this.add( this.cone );
		this.update();
	}
	dispose() {
		this.cone.geometry.dispose();
		this.cone.material.dispose();
	}
	update() {
		this.light.updateMatrixWorld();
		const coneLength = this.light.distance ? this.light.distance : 1000;
		const coneWidth = coneLength * Math.tan( this.light.angle );
		this.cone.scale.set( coneWidth, coneWidth, coneLength );
		_vector$8.setFromMatrixPosition( this.light.target.matrixWorld );
		this.cone.lookAt( _vector$8 );
		if ( this.color !== undefined ) {
			this.cone.material.color.set( this.color );
		} else {
			this.cone.material.color.copy( this.light.color );
		}
	}
}
const _vector$9 = new Vector3();
const _boneMatrix = new Matrix4();
const _matrixWorldInv = new Matrix4();
class SkeletonHelper extends LineSegments {
	constructor( object ) {
		const bones = getBoneList( object );
		const geometry = new BufferGeometry();
		const vertices = [];
		const colors = [];
		const color1 = new Color( 0, 0, 1 );
		const color2 = new Color( 0, 1, 0 );
		for ( let i = 0; i < bones.length; i ++ ) {
			const bone = bones[ i ];
			if ( bone.parent && bone.parent.isBone ) {
				vertices.push( 0, 0, 0 );
				vertices.push( 0, 0, 0 );
				colors.push( color1.r, color1.g, color1.b );
				colors.push( color2.r, color2.g, color2.b );
			}
		}
		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
		const material = new LineBasicMaterial( { vertexColors: true, depthTest: false, depthWrite: false, toneMapped: false, transparent: true } );
		super( geometry, material );
		this.type = 'SkeletonHelper';
		this.isSkeletonHelper = true;
		this.root = object;
		this.bones = bones;
		this.matrix = object.matrixWorld;
		this.matrixAutoUpdate = false;
	}
	updateMatrixWorld( force ) {
		const bones = this.bones;
		const geometry = this.geometry;
		const position = geometry.getAttribute( 'position' );
		_matrixWorldInv.getInverse( this.root.matrixWorld );
		for ( let i = 0, j = 0; i < bones.length; i ++ ) {
			const bone = bones[ i ];
			if ( bone.parent && bone.parent.isBone ) {
				_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.matrixWorld );
				_vector$9.setFromMatrixPosition( _boneMatrix );
				position.setXYZ( j, _vector$9.x, _vector$9.y, _vector$9.z );
				_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.parent.matrixWorld );
				_vector$9.setFromMatrixPosition( _boneMatrix );
				position.setXYZ( j + 1, _vector$9.x, _vector$9.y, _vector$9.z );
				j += 2;
			}
		}
		geometry.getAttribute( 'position' ).needsUpdate = true;
		super.updateMatrixWorld( force );
	}
}
function getBoneList( object ) {
	const boneList = [];
	if ( object && object.isBone ) {
		boneList.push( object );
	}
	for ( let i = 0; i < object.children.length; i ++ ) {
		boneList.push.apply( boneList, getBoneList( object.children[ i ] ) );
	}
	return boneList;
}
class PointLightHelper extends Mesh {
	constructor( light, sphereSize, color ) {
		const geometry = new SphereBufferGeometry( sphereSize, 4, 2 );
		const material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );
		super( geometry, material );
		this.light = light;
		this.light.updateMatrixWorld();
		this.color = color;
		this.type = 'PointLightHelper';
		this.matrix = this.light.matrixWorld;
		this.matrixAutoUpdate = false;
		this.update();
	}
	dispose() {
		this.geometry.dispose();
		this.material.dispose();
	}
	update() {
		if ( this.color !== undefined ) {
			this.material.color.set( this.color );
		} else {
			this.material.color.copy( this.light.color );
		}
	}
}
const _vector$a = new Vector3();
const _color1 = new Color();
const _color2 = new Color();
class HemisphereLightHelper extends Object3D {
	constructor( light, size, color ) {
		super();
		this.light = light;
		this.light.updateMatrixWorld();
		this.matrix = light.matrixWorld;
		this.matrixAutoUpdate = false;
		this.color = color;
		const geometry = new OctahedronBufferGeometry( size );
		geometry.rotateY( Math.PI * 0.5 );
		this.material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );
		if ( this.color === undefined ) this.material.vertexColors = true;
		const position = geometry.getAttribute( 'position' );
		const colors = new Float32Array( position.count * 3 );
		geometry.setAttribute( 'color', new BufferAttribute( colors, 3 ) );
		this.add( new Mesh( geometry, this.material ) );
		this.update();
	}
	dispose() {
		this.children[ 0 ].geometry.dispose();
		this.children[ 0 ].material.dispose();
	}
	update() {
		const mesh = this.children[ 0 ];
		if ( this.color !== undefined ) {
			this.material.color.set( this.color );
		} else {
			const colors = mesh.geometry.getAttribute( 'color' );
			_color1.copy( this.light.color );
			_color2.copy( this.light.groundColor );
			for ( let i = 0, l = colors.count; i < l; i ++ ) {
				const color = ( i < ( l / 2 ) ) ? _color1 : _color2;
				colors.setXYZ( i, color.r, color.g, color.b );
			}
			colors.needsUpdate = true;
		}
		mesh.lookAt( _vector$a.setFromMatrixPosition( this.light.matrixWorld ).negate() );
	}
}
class GridHelper extends LineSegments {
	constructor( size, divisions, color1, color2 ) {
		size = size || 10;
		divisions = divisions || 10;
		color1 = new Color( color1 !== undefined ? color1 : 0x444444 );
		color2 = new Color( color2 !== undefined ? color2 : 0x888888 );
		const center = divisions / 2;
		const step = size / divisions;
		const halfSize = size / 2;
		const vertices = [], colors = [];
		for ( let i = 0, j = 0, k = - halfSize; i <= divisions; i ++, k += step ) {
			vertices.push( - halfSize, 0, k, halfSize, 0, k );
			vertices.push( k, 0, - halfSize, k, 0, halfSize );
			const color = i === center ? color1 : color2;
			color.toArray( colors, j ); j += 3;
			color.toArray( colors, j ); j += 3;
			color.toArray( colors, j ); j += 3;
			color.toArray( colors, j ); j += 3;
		}
		const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );
		super( geometry, material );
		this.type = 'GridHelper';
	}
}
class PolarGridHelper extends LineSegments {
	constructor( radius, radials, circles, divisions, color1, color2 ) {
		radius = radius || 10;
		radials = radials || 16;
		circles = circles || 8;
		divisions = divisions || 64;
		color1 = new Color( color1 !== undefined ? color1 : 0x444444 );
		color2 = new Color( color2 !== undefined ? color2 : 0x888888 );
		const vertices = [];
		const colors = [];
		for ( let i = 0; i <= radials; i ++ ) {
			const v = ( i / radials ) * ( Math.PI * 2 );
			const x = Math.sin( v ) * radius;
			const z = Math.cos( v ) * radius;
			vertices.push( 0, 0, 0 );
			vertices.push( x, 0, z );
			const color = ( i & 1 ) ? color1 : color2;
			colors.push( color.r, color.g, color.b );
			colors.push( color.r, color.g, color.b );
		}
		for ( let i = 0; i <= circles; i ++ ) {
			const color = ( i & 1 ) ? color1 : color2;
			const r = radius - ( radius / circles * i );
			for ( let j = 0; j < divisions; j ++ ) {
				let v = ( j / divisions ) * ( Math.PI * 2 );
				let x = Math.sin( v ) * r;
				let z = Math.cos( v ) * r;
				vertices.push( x, 0, z );
				colors.push( color.r, color.g, color.b );
				v = ( ( j + 1 ) / divisions ) * ( Math.PI * 2 );
				x = Math.sin( v ) * r;
				z = Math.cos( v ) * r;
				vertices.push( x, 0, z );
				colors.push( color.r, color.g, color.b );
			}
		}
		const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );
		super( geometry, material );
		this.type = 'PolarGridHelper';
	}
}
const _v1$5 = new Vector3();
const _v2$3 = new Vector3();
const _v3$1 = new Vector3();
class DirectionalLightHelper extends Object3D {
	constructor( light, size, color ) {
		super();
		this.light = light;
		this.light.updateMatrixWorld();
		this.matrix = light.matrixWorld;
		this.matrixAutoUpdate = false;
		this.color = color;
		if ( size === undefined ) size = 1;
		let geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( [
			- size, size, 0,
			size, size, 0,
			size, - size, 0,
			- size, - size, 0,
			- size, size, 0
		], 3 ) );
		const material = new LineBasicMaterial( { fog: false, toneMapped: false } );
		this.lightPlane = new Line( geometry, material );
		this.add( this.lightPlane );
		geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) );
		this.targetLine = new Line( geometry, material );
		this.add( this.targetLine );
		this.update();
	}
	dispose() {
		this.lightPlane.geometry.dispose();
		this.lightPlane.material.dispose();
		this.targetLine.geometry.dispose();
		this.targetLine.material.dispose();
	}
	update() {
		_v1$5.setFromMatrixPosition( this.light.matrixWorld );
		_v2$3.setFromMatrixPosition( this.light.target.matrixWorld );
		_v3$1.subVectors( _v2$3, _v1$5 );
		this.lightPlane.lookAt( _v2$3 );
		if ( this.color !== undefined ) {
			this.lightPlane.material.color.set( this.color );
			this.targetLine.material.color.set( this.color );
		} else {
			this.lightPlane.material.color.copy( this.light.color );
			this.targetLine.material.color.copy( this.light.color );
		}
		this.targetLine.lookAt( _v2$3 );
		this.targetLine.scale.z = _v3$1.length();
	}
}
const _vector$b = new Vector3();
const _camera = new Camera();
class CameraHelper extends LineSegments {
	constructor( camera ) {
		const geometry = new BufferGeometry();
		const material = new LineBasicMaterial( { color: 0xffffff, vertexColors: true, toneMapped: false } );
		const vertices = [];
		const colors = [];
		const pointMap = {};
		const colorFrustum = new Color( 0xffaa00 );
		const colorCone = new Color( 0xff0000 );
		const colorUp = new Color( 0x00aaff );
		const colorTarget = new Color( 0xffffff );
		const colorCross = new Color( 0x333333 );
		addLine( 'n1', 'n2', colorFrustum );
		addLine( 'n2', 'n4', colorFrustum );
		addLine( 'n4', 'n3', colorFrustum );
		addLine( 'n3', 'n1', colorFrustum );
		addLine( 'f1', 'f2', colorFrustum );
		addLine( 'f2', 'f4', colorFrustum );
		addLine( 'f4', 'f3', colorFrustum );
		addLine( 'f3', 'f1', colorFrustum );
		addLine( 'n1', 'f1', colorFrustum );
		addLine( 'n2', 'f2', colorFrustum );
		addLine( 'n3', 'f3', colorFrustum );
		addLine( 'n4', 'f4', colorFrustum );
		addLine( 'p', 'n1', colorCone );
		addLine( 'p', 'n2', colorCone );
		addLine( 'p', 'n3', colorCone );
		addLine( 'p', 'n4', colorCone );
		addLine( 'u1', 'u2', colorUp );
		addLine( 'u2', 'u3', colorUp );
		addLine( 'u3', 'u1', colorUp );
		addLine( 'c', 't', colorTarget );
		addLine( 'p', 'c', colorCross );
		addLine( 'cn1', 'cn2', colorCross );
		addLine( 'cn3', 'cn4', colorCross );
		addLine( 'cf1', 'cf2', colorCross );
		addLine( 'cf3', 'cf4', colorCross );
		function addLine( a, b, color ) {
			addPoint( a, color );
			addPoint( b, color );
		}
		function addPoint( id, color ) {
			vertices.push( 0, 0, 0 );
			colors.push( color.r, color.g, color.b );
			if ( pointMap[ id ] === undefined ) {
				pointMap[ id ] = [];
			}
			pointMap[ id ].push( ( vertices.length / 3 ) - 1 );
		}
		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
		super( geometry, material );
		this.type = 'CameraHelper';
		this.camera = camera;
		if ( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();
		this.matrix = camera.matrixWorld;
		this.matrixAutoUpdate = false;
		this.pointMap = pointMap;
		this.update();
	}
	update() {
		const geometry = this.geometry;
		const pointMap = this.pointMap;
		const w = 1, h = 1;
		_camera.projectionMatrixInverse.copy( this.camera.projectionMatrixInverse );
		setPoint( 'c', pointMap, geometry, _camera, 0, 0, - 1 );
		setPoint( 't', pointMap, geometry, _camera, 0, 0, 1 );
		setPoint( 'n1', pointMap, geometry, _camera, - w, - h, - 1 );
		setPoint( 'n2', pointMap, geometry, _camera, w, - h, - 1 );
		setPoint( 'n3', pointMap, geometry, _camera, - w, h, - 1 );
		setPoint( 'n4', pointMap, geometry, _camera, w, h, - 1 );
		setPoint( 'f1', pointMap, geometry, _camera, - w, - h, 1 );
		setPoint( 'f2', pointMap, geometry, _camera, w, - h, 1 );
		setPoint( 'f3', pointMap, geometry, _camera, - w, h, 1 );
		setPoint( 'f4', pointMap, geometry, _camera, w, h, 1 );
		setPoint( 'u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, - 1 );
		setPoint( 'u2', pointMap, geometry, _camera, - w * 0.7, h * 1.1, - 1 );
		setPoint( 'u3', pointMap, geometry, _camera, 0, h * 2, - 1 );
		setPoint( 'cf1', pointMap, geometry, _camera, - w, 0, 1 );
		setPoint( 'cf2', pointMap, geometry, _camera, w, 0, 1 );
		setPoint( 'cf3', pointMap, geometry, _camera, 0, - h, 1 );
		setPoint( 'cf4', pointMap, geometry, _camera, 0, h, 1 );
		setPoint( 'cn1', pointMap, geometry, _camera, - w, 0, - 1 );
		setPoint( 'cn2', pointMap, geometry, _camera, w, 0, - 1 );
		setPoint( 'cn3', pointMap, geometry, _camera, 0, - h, - 1 );
		setPoint( 'cn4', pointMap, geometry, _camera, 0, h, - 1 );
		geometry.getAttribute( 'position' ).needsUpdate = true;
	}
}
function setPoint( point, pointMap, geometry, camera, x, y, z ) {
	_vector$b.set( x, y, z ).unproject( camera );
	const points = pointMap[ point ];
	if ( points !== undefined ) {
		const position = geometry.getAttribute( 'position' );
		for ( let i = 0, l = points.length; i < l; i ++ ) {
			position.setXYZ( points[ i ], _vector$b.x, _vector$b.y, _vector$b.z );
		}
	}
}
const _box$3 = new Box3();
class BoxHelper extends LineSegments {
	constructor( object, color = 0xffff00 ) {
		const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
		const positions = new Float32Array( 8 * 3 );
		const geometry = new BufferGeometry();
		geometry.setIndex( new BufferAttribute( indices, 1 ) );
		geometry.setAttribute( 'position', new BufferAttribute( positions, 3 ) );
		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
		this.object = object;
		this.type = 'BoxHelper';
		this.matrixAutoUpdate = false;
		this.update();
	}
	update( object ) {
		if ( object !== undefined ) {
			console.warn( 'THREE.BoxHelper: .update() has no longer arguments.' );
		}
		if ( this.object !== undefined ) {
			_box$3.setFromObject( this.object );
		}
		if ( _box$3.isEmpty() ) return;
		const min = _box$3.min;
		const max = _box$3.max;
		const position = this.geometry.attributes.position;
		const array = position.array;
		array[ 0 ] = max.x; array[ 1 ] = max.y; array[ 2 ] = max.z;
		array[ 3 ] = min.x; array[ 4 ] = max.y; array[ 5 ] = max.z;
		array[ 6 ] = min.x; array[ 7 ] = min.y; array[ 8 ] = max.z;
		array[ 9 ] = max.x; array[ 10 ] = min.y; array[ 11 ] = max.z;
		array[ 12 ] = max.x; array[ 13 ] = max.y; array[ 14 ] = min.z;
		array[ 15 ] = min.x; array[ 16 ] = max.y; array[ 17 ] = min.z;
		array[ 18 ] = min.x; array[ 19 ] = min.y; array[ 20 ] = min.z;
		array[ 21 ] = max.x; array[ 22 ] = min.y; array[ 23 ] = min.z;
		position.needsUpdate = true;
		this.geometry.computeBoundingSphere();
	}
	setFromObject( object ) {
		this.object = object;
		this.update();
		return this;
	}
	copy( source ) {
		LineSegments.prototype.copy.call( this, source );
		this.object = source.object;
		return this;
	}
}
class Box3Helper extends LineSegments {
	constructor( box, color = 0xffff00 ) {
		const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
		const positions = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 1, - 1, 1, - 1, - 1 ];
		const geometry = new BufferGeometry();
		geometry.setIndex( new BufferAttribute( indices, 1 ) );
		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
		this.box = box;
		this.type = 'Box3Helper';
		this.geometry.computeBoundingSphere();
	}
	updateMatrixWorld( force ) {
		const box = this.box;
		if ( box.isEmpty() ) return;
		box.getCenter( this.position );
		box.getSize( this.scale );
		this.scale.multiplyScalar( 0.5 );
		super.updateMatrixWorld( force );
	}
}
class PlaneHelper extends Line {
	constructor( plane, size, hex ) {
		const color = ( hex !== undefined ) ? hex : 0xffff00;
		const positions = [ 1, - 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0 ];
		const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
		geometry.computeBoundingSphere();
		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
		this.type = 'PlaneHelper';
		this.plane = plane;
		this.size = ( size === undefined ) ? 1 : size;
		const positions2 = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, - 1, 1, 1, - 1, 1 ];
		const geometry2 = new BufferGeometry();
		geometry2.setAttribute( 'position', new Float32BufferAttribute( positions2, 3 ) );
		geometry2.computeBoundingSphere();
		this.add( new Mesh( geometry2, new MeshBasicMaterial( { color: color, opacity: 0.2, transparent: true, depthWrite: false, toneMapped: false } ) ) );
	}
	updateMatrixWorld( force ) {
		let scale = - this.plane.constant;
		if ( Math.abs( scale ) < 1e-8 ) scale = 1e-8;
		this.scale.set( 0.5 * this.size, 0.5 * this.size, scale );
		this.children[ 0 ].material.side = ( scale < 0 ) ? BackSide : FrontSide;
		this.lookAt( this.plane.normal );
		super.updateMatrixWorld( force );
	}
}
const _axis = new Vector3();
let _lineGeometry, _coneGeometry;
class ArrowHelper extends Object3D {
	constructor( dir, origin, length, color, headLength, headWidth ) {
		super();
		this.type = 'ArrowHelper';
		if ( dir === undefined ) dir = new Vector3( 0, 0, 1 );
		if ( origin === undefined ) origin = new Vector3( 0, 0, 0 );
		if ( length === undefined ) length = 1;
		if ( color === undefined ) color = 0xffff00;
		if ( headLength === undefined ) headLength = 0.2 * length;
		if ( headWidth === undefined ) headWidth = 0.2 * headLength;
		if ( _lineGeometry === undefined ) {
			_lineGeometry = new BufferGeometry();
			_lineGeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 1, 0 ], 3 ) );
			_coneGeometry = new CylinderBufferGeometry( 0, 0.5, 1, 5, 1 );
			_coneGeometry.translate( 0, - 0.5, 0 );
		}
		this.position.copy( origin );
		this.line = new Line( _lineGeometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
		this.line.matrixAutoUpdate = false;
		this.add( this.line );
		this.cone = new Mesh( _coneGeometry, new MeshBasicMaterial( { color: color, toneMapped: false } ) );
		this.cone.matrixAutoUpdate = false;
		this.add( this.cone );
		this.setDirection( dir );
		this.setLength( length, headLength, headWidth );
	}
	setDirection( dir ) {
		if ( dir.y > 0.99999 ) {
			this.quaternion.set( 0, 0, 0, 1 );
		} else if ( dir.y < - 0.99999 ) {
			this.quaternion.set( 1, 0, 0, 0 );
		} else {
			_axis.set( dir.z, 0, - dir.x ).normalize();
			const radians = Math.acos( dir.y );
			this.quaternion.setFromAxisAngle( _axis, radians );
		}
	}
	setLength( length, headLength, headWidth ) {
		if ( headLength === undefined ) headLength = 0.2 * length;
		if ( headWidth === undefined ) headWidth = 0.2 * headLength;
		this.line.scale.set( 1, Math.max( 0.0001, length - headLength ), 1 );
		this.line.updateMatrix();
		this.cone.scale.set( headWidth, headLength, headWidth );
		this.cone.position.y = length;
		this.cone.updateMatrix();
	}
	setColor( color ) {
		this.line.material.color.set( color );
		this.cone.material.color.set( color );
	}
	copy( source ) {
		super.copy( source, false );
		this.line.copy( source.line );
		this.cone.copy( source.cone );
		return this;
	}
}
class AxesHelper extends LineSegments {
	constructor( size = 1 ) {
		const vertices = [
			0, 0, 0,	size, 0, 0,
			0, 0, 0,	0, size, 0,
			0, 0, 0,	0, 0, size
		];
		const colors = [
			1, 0, 0,	1, 0.6, 0,
			0, 1, 0,	0.6, 1, 0,
			0, 0, 1,	0, 0.6, 1
		];
		const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );
		super( geometry, material );
		this.type = 'AxesHelper';
	}
}
const LOD_MIN = 4;
const LOD_MAX = 8;
const SIZE_MAX = Math.pow( 2, LOD_MAX );
const EXTRA_LOD_SIGMA = [ 0.125, 0.215, 0.35, 0.446, 0.526, 0.582 ];
const TOTAL_LODS = LOD_MAX - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length;
const MAX_SAMPLES = 20;
const ENCODINGS = {
	[ LinearEncoding ]: 0,
	[ sRGBEncoding ]: 1,
	[ RGBEEncoding ]: 2,
	[ RGBM7Encoding ]: 3,
	[ RGBM16Encoding ]: 4,
	[ RGBDEncoding ]: 5,
	[ GammaEncoding ]: 6
};
const _flatCamera = new OrthographicCamera();
const { _lodPlanes, _sizeLods, _sigmas } = _createPlanes();
let _oldTarget = null;
const PHI = ( 1 + Math.sqrt( 5 ) ) / 2;
const INV_PHI = 1 / PHI;
const _axisDirections = [
	new Vector3( 1, 1, 1 ),
	new Vector3( - 1, 1, 1 ),
	new Vector3( 1, 1, - 1 ),
	new Vector3( - 1, 1, - 1 ),
	new Vector3( 0, PHI, INV_PHI ),
	new Vector3( 0, PHI, - INV_PHI ),
	new Vector3( INV_PHI, 0, PHI ),
	new Vector3( - INV_PHI, 0, PHI ),
	new Vector3( PHI, INV_PHI, 0 ),
	new Vector3( - PHI, INV_PHI, 0 ) ];
class PMREMGenerator {
	constructor( renderer ) {
		this._renderer = renderer;
		this._pingPongRenderTarget = null;
		this._blurMaterial = _getBlurShader( MAX_SAMPLES );
		this._equirectShader = null;
		this._cubemapShader = null;
		this._compileMaterial( this._blurMaterial );
	}
	fromScene( scene, sigma = 0, near = 0.1, far = 100 ) {
		_oldTarget = this._renderer.getRenderTarget();
		const cubeUVRenderTarget = this._allocateTargets();
		this._sceneToCubeUV( scene, near, far, cubeUVRenderTarget );
		if ( sigma > 0 ) {
			this._blur( cubeUVRenderTarget, 0, 0, sigma );
		}
		this._applyPMREM( cubeUVRenderTarget );
		this._cleanup( cubeUVRenderTarget );
		return cubeUVRenderTarget;
	}
	fromEquirectangular( equirectangular ) {
		return this._fromTexture( equirectangular );
	}
	fromCubemap( cubemap ) {
		return this._fromTexture( cubemap );
	}
	compileCubemapShader() {
		if ( this._cubemapShader === null ) {
			this._cubemapShader = _getCubemapShader();
			this._compileMaterial( this._cubemapShader );
		}
	}
	compileEquirectangularShader() {
		if ( this._equirectShader === null ) {
			this._equirectShader = _getEquirectShader();
			this._compileMaterial( this._equirectShader );
		}
	}
	dispose() {
		this._blurMaterial.dispose();
		if ( this._cubemapShader !== null ) this._cubemapShader.dispose();
		if ( this._equirectShader !== null ) this._equirectShader.dispose();
		for ( let i = 0; i < _lodPlanes.length; i ++ ) {
			_lodPlanes[ i ].dispose();
		}
	}
	_cleanup( outputTarget ) {
		this._pingPongRenderTarget.dispose();
		this._renderer.setRenderTarget( _oldTarget );
		outputTarget.scissorTest = false;
		_setViewport( outputTarget, 0, 0, outputTarget.width, outputTarget.height );
	}
	_fromTexture( texture ) {
		_oldTarget = this._renderer.getRenderTarget();
		const cubeUVRenderTarget = this._allocateTargets( texture );
		this._textureToCubeUV( texture, cubeUVRenderTarget );
		this._applyPMREM( cubeUVRenderTarget );
		this._cleanup( cubeUVRenderTarget );
		return cubeUVRenderTarget;
	}
	_allocateTargets( texture ) {
		const params = {
			magFilter: NearestFilter,
			minFilter: NearestFilter,
			generateMipmaps: false,
			type: UnsignedByteType,
			format: RGBEFormat,
			encoding: _isLDR( texture ) ? texture.encoding : RGBEEncoding,
			depthBuffer: false
		};
		const cubeUVRenderTarget = _createRenderTarget( params );
		cubeUVRenderTarget.depthBuffer = texture ? false : true;
		this._pingPongRenderTarget = _createRenderTarget( params );
		return cubeUVRenderTarget;
	}
	_compileMaterial( material ) {
		const tmpMesh = new Mesh( _lodPlanes[ 0 ], material );
		this._renderer.compile( tmpMesh, _flatCamera );
	}
	_sceneToCubeUV( scene, near, far, cubeUVRenderTarget ) {
		const fov = 90;
		const aspect = 1;
		const cubeCamera = new PerspectiveCamera( fov, aspect, near, far );
		const upSign = [ 1, - 1, 1, 1, 1, 1 ];
		const forwardSign = [ 1, 1, 1, - 1, - 1, - 1 ];
		const renderer = this._renderer;
		const outputEncoding = renderer.outputEncoding;
		const toneMapping = renderer.toneMapping;
		const clearColor = renderer.getClearColor();
		const clearAlpha = renderer.getClearAlpha();
		renderer.toneMapping = NoToneMapping;
		renderer.outputEncoding = LinearEncoding;
		let background = scene.background;
		if ( background && background.isColor ) {
			background.convertSRGBToLinear();
			const maxComponent = Math.max( background.r, background.g, background.b );
			const fExp = Math.min( Math.max( Math.ceil( Math.log2( maxComponent ) ), - 128.0 ), 127.0 );
			background = background.multiplyScalar( Math.pow( 2.0, - fExp ) );
			const alpha = ( fExp + 128.0 ) / 255.0;
			renderer.setClearColor( background, alpha );
			scene.background = null;
		}
		for ( let i = 0; i < 6; i ++ ) {
			const col = i % 3;
			if ( col == 0 ) {
				cubeCamera.up.set( 0, upSign[ i ], 0 );
				cubeCamera.lookAt( forwardSign[ i ], 0, 0 );
			} else if ( col == 1 ) {
				cubeCamera.up.set( 0, 0, upSign[ i ] );
				cubeCamera.lookAt( 0, forwardSign[ i ], 0 );
			} else {
				cubeCamera.up.set( 0, upSign[ i ], 0 );
				cubeCamera.lookAt( 0, 0, forwardSign[ i ] );
			}
			_setViewport( cubeUVRenderTarget,
				col * SIZE_MAX, i > 2 ? SIZE_MAX : 0, SIZE_MAX, SIZE_MAX );
			renderer.setRenderTarget( cubeUVRenderTarget );
			renderer.render( scene, cubeCamera );
		}
		renderer.toneMapping = toneMapping;
		renderer.outputEncoding = outputEncoding;
		renderer.setClearColor( clearColor, clearAlpha );
	}
	_textureToCubeUV( texture, cubeUVRenderTarget ) {
		const renderer = this._renderer;
		if ( texture.isCubeTexture ) {
			if ( this._cubemapShader == null ) {
				this._cubemapShader = _getCubemapShader();
			}
		} else {
			if ( this._equirectShader == null ) {
				this._equirectShader = _getEquirectShader();
			}
		}
		const material = texture.isCubeTexture ? this._cubemapShader : this._equirectShader;
		const mesh = new Mesh( _lodPlanes[ 0 ], material );
		const uniforms = material.uniforms;
		uniforms[ 'envMap' ].value = texture;
		if ( ! texture.isCubeTexture ) {
			uniforms[ 'texelSize' ].value.set( 1.0 / texture.image.width, 1.0 / texture.image.height );
		}
		uniforms[ 'inputEncoding' ].value = ENCODINGS[ texture.encoding ];
		uniforms[ 'outputEncoding' ].value = ENCODINGS[ cubeUVRenderTarget.texture.encoding ];
		_setViewport( cubeUVRenderTarget, 0, 0, 3 * SIZE_MAX, 2 * SIZE_MAX );
		renderer.setRenderTarget( cubeUVRenderTarget );
		renderer.render( mesh, _flatCamera );
	}
	_applyPMREM( cubeUVRenderTarget ) {
		const renderer = this._renderer;
		const autoClear = renderer.autoClear;
		renderer.autoClear = false;
		for ( let i = 1; i < TOTAL_LODS; i ++ ) {
			const sigma = Math.sqrt( _sigmas[ i ] * _sigmas[ i ] - _sigmas[ i - 1 ] * _sigmas[ i - 1 ] );
			const poleAxis = _axisDirections[ ( i - 1 ) % _axisDirections.length ];
			this._blur( cubeUVRenderTarget, i - 1, i, sigma, poleAxis );
		}
		renderer.autoClear = autoClear;
	}
	_blur( cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis ) {
		const pingPongRenderTarget = this._pingPongRenderTarget;
		this._halfBlur(
			cubeUVRenderTarget,
			pingPongRenderTarget,
			lodIn,
			lodOut,
			sigma,
			'latitudinal',
			poleAxis );
		this._halfBlur(
			pingPongRenderTarget,
			cubeUVRenderTarget,
			lodOut,
			lodOut,
			sigma,
			'longitudinal',
			poleAxis );
	}
	_halfBlur( targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis ) {
		const renderer = this._renderer;
		const blurMaterial = this._blurMaterial;
		if ( direction !== 'latitudinal' && direction !== 'longitudinal' ) {
			console.error(
				'blur direction must be either latitudinal or longitudinal!' );
		}
		const STANDARD_DEVIATIONS = 3;
		const blurMesh = new Mesh( _lodPlanes[ lodOut ], blurMaterial );
		const blurUniforms = blurMaterial.uniforms;
		const pixels = _sizeLods[ lodIn ] - 1;
		const radiansPerPixel = isFinite( sigmaRadians ) ? Math.PI / ( 2 * pixels ) : 2 * Math.PI / ( 2 * MAX_SAMPLES - 1 );
		const sigmaPixels = sigmaRadians / radiansPerPixel;
		const samples = isFinite( sigmaRadians ) ? 1 + Math.floor( STANDARD_DEVIATIONS * sigmaPixels ) : MAX_SAMPLES;
		if ( samples > MAX_SAMPLES ) {
			console.warn( `sigmaRadians, ${
				sigmaRadians}, is too large and will clip, as it requested ${
				samples} samples when the maximum is set to ${MAX_SAMPLES}` );
		}
		const weights = [];
		let sum = 0;
		for ( let i = 0; i < MAX_SAMPLES; ++ i ) {
			const x = i / sigmaPixels;
			const weight = Math.exp( - x * x / 2 );
			weights.push( weight );
			if ( i == 0 ) {
				sum += weight;
			} else if ( i < samples ) {
				sum += 2 * weight;
			}
		}
		for ( let i = 0; i < weights.length; i ++ ) {
			weights[ i ] = weights[ i ] / sum;
		}
		blurUniforms[ 'envMap' ].value = targetIn.texture;
		blurUniforms[ 'samples' ].value = samples;
		blurUniforms[ 'weights' ].value = weights;
		blurUniforms[ 'latitudinal' ].value = direction === 'latitudinal';
		if ( poleAxis ) {
			blurUniforms[ 'poleAxis' ].value = poleAxis;
		}
		blurUniforms[ 'dTheta' ].value = radiansPerPixel;
		blurUniforms[ 'mipInt' ].value = LOD_MAX - lodIn;
		blurUniforms[ 'inputEncoding' ].value = ENCODINGS[ targetIn.texture.encoding ];
		blurUniforms[ 'outputEncoding' ].value = ENCODINGS[ targetIn.texture.encoding ];
		const outputSize = _sizeLods[ lodOut ];
		const x = 3 * Math.max( 0, SIZE_MAX - 2 * outputSize );
		const y = ( lodOut === 0 ? 0 : 2 * SIZE_MAX ) + 2 * outputSize * ( lodOut > LOD_MAX - LOD_MIN ? lodOut - LOD_MAX + LOD_MIN : 0 );
		_setViewport( targetOut, x, y, 3 * outputSize, 2 * outputSize );
		renderer.setRenderTarget( targetOut );
		renderer.render( blurMesh, _flatCamera );
	}
}
function _isLDR( texture ) {
	if ( texture === undefined || texture.type !== UnsignedByteType ) return false;
	return texture.encoding === LinearEncoding || texture.encoding === sRGBEncoding || texture.encoding === GammaEncoding;
}
function _createPlanes() {
	const _lodPlanes = [];
	const _sizeLods = [];
	const _sigmas = [];
	let lod = LOD_MAX;
	for ( let i = 0; i < TOTAL_LODS; i ++ ) {
		const sizeLod = Math.pow( 2, lod );
		_sizeLods.push( sizeLod );
		let sigma = 1.0 / sizeLod;
		if ( i > LOD_MAX - LOD_MIN ) {
			sigma = EXTRA_LOD_SIGMA[ i - LOD_MAX + LOD_MIN - 1 ];
		} else if ( i == 0 ) {
			sigma = 0;
		}
		_sigmas.push( sigma );
		const texelSize = 1.0 / ( sizeLod - 1 );
		const min = - texelSize / 2;
		const max = 1 + texelSize / 2;
		const uv1 = [ min, min, max, min, max, max, min, min, max, max, min, max ];
		const cubeFaces = 6;
		const vertices = 6;
		const positionSize = 3;
		const uvSize = 2;
		const faceIndexSize = 1;
		const position = new Float32Array( positionSize * vertices * cubeFaces );
		const uv = new Float32Array( uvSize * vertices * cubeFaces );
		const faceIndex = new Float32Array( faceIndexSize * vertices * cubeFaces );
		for ( let face = 0; face < cubeFaces; face ++ ) {
			const x = ( face % 3 ) * 2 / 3 - 1;
			const y = face > 2 ? 0 : - 1;
			const coordinates = [
				x, y, 0,
				x + 2 / 3, y, 0,
				x + 2 / 3, y + 1, 0,
				x, y, 0,
				x + 2 / 3, y + 1, 0,
				x, y + 1, 0
			];
			position.set( coordinates, positionSize * vertices * face );
			uv.set( uv1, uvSize * vertices * face );
			const fill = [ face, face, face, face, face, face ];
			faceIndex.set( fill, faceIndexSize * vertices * face );
		}
		const planes = new BufferGeometry();
		planes.setAttribute( 'position', new BufferAttribute( position, positionSize ) );
		planes.setAttribute( 'uv', new BufferAttribute( uv, uvSize ) );
		planes.setAttribute( 'faceIndex', new BufferAttribute( faceIndex, faceIndexSize ) );
		_lodPlanes.push( planes );
		if ( lod > LOD_MIN ) {
			lod --;
		}
	}
	return { _lodPlanes, _sizeLods, _sigmas };
}
function _createRenderTarget( params ) {
	const cubeUVRenderTarget = new WebGLRenderTarget( 3 * SIZE_MAX, 3 * SIZE_MAX, params );
	cubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;
	cubeUVRenderTarget.texture.name = 'PMREM.cubeUv';
	cubeUVRenderTarget.scissorTest = true;
	return cubeUVRenderTarget;
}
function _setViewport( target, x, y, width, height ) {
	target.viewport.set( x, y, width, height );
	target.scissor.set( x, y, width, height );
}
function _getBlurShader( maxSamples ) {
	const weights = new Float32Array( maxSamples );
	const poleAxis = new Vector3( 0, 1, 0 );
	const shaderMaterial = new RawShaderMaterial( {
		name: 'SphericalGaussianBlur',
		defines: { 'n': maxSamples },
		uniforms: {
			'envMap': { value: null },
			'samples': { value: 1 },
			'weights': { value: weights },
			'latitudinal': { value: false },
			'dTheta': { value: 0 },
			'mipInt': { value: 0 },
			'poleAxis': { value: poleAxis },
			'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },
			'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }
		},
		vertexShader: _getCommonVertexShader(),
		fragmentShader: `

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;
			uniform int samples;
			uniform float weights[ n ];
			uniform bool latitudinal;
			uniform float dTheta;
			uniform float mipInt;
			uniform vec3 poleAxis;

			${ _getEncodings() }

			#define ENVMAP_TYPE_CUBE_UV
			#include <cube_uv_reflection_fragment>

			vec3 getSample( float theta, vec3 axis ) {

				float cosTheta = cos( theta );
				// Rodrigues' axis-angle rotation
				vec3 sampleDirection = vOutputDirection * cosTheta
					+ cross( axis, vOutputDirection ) * sin( theta )
					+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );

				return bilinearCubeUV( envMap, sampleDirection, mipInt );

			}

			void main() {

				vec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );

				if ( all( equal( axis, vec3( 0.0 ) ) ) ) {

					axis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );

				}

				axis = normalize( axis );

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
				gl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );

				for ( int i = 1; i < n; i++ ) {

					if ( i >= samples ) {

						break;

					}

					float theta = dTheta * float( i );
					gl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );
					gl_FragColor.rgb += weights[ i ] * getSample( theta, axis );

				}

				gl_FragColor = linearToOutputTexel( gl_FragColor );

			}
		`,
		blending: NoBlending,
		depthTest: false,
		depthWrite: false
	} );
	return shaderMaterial;
}
function _getEquirectShader() {
	const texelSize = new Vector2( 1, 1 );
	const shaderMaterial = new RawShaderMaterial( {
		name: 'EquirectangularToCubeUV',
		uniforms: {
			'envMap': { value: null },
			'texelSize': { value: texelSize },
			'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },
			'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }
		},
		vertexShader: _getCommonVertexShader(),
		fragmentShader: `

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;
			uniform vec2 texelSize;

			${ _getEncodings() }

			#include <common>

			void main() {

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );

				vec3 outputDirection = normalize( vOutputDirection );
				vec2 uv = equirectUv( outputDirection );

				vec2 f = fract( uv / texelSize - 0.5 );
				uv -= f * texelSize;
				vec3 tl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
				uv.x += texelSize.x;
				vec3 tr = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
				uv.y += texelSize.y;
				vec3 br = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
				uv.x -= texelSize.x;
				vec3 bl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;

				vec3 tm = mix( tl, tr, f.x );
				vec3 bm = mix( bl, br, f.x );
				gl_FragColor.rgb = mix( tm, bm, f.y );

				gl_FragColor = linearToOutputTexel( gl_FragColor );

			}
		`,
		blending: NoBlending,
		depthTest: false,
		depthWrite: false
	} );
	return shaderMaterial;
}
function _getCubemapShader() {
	const shaderMaterial = new RawShaderMaterial( {
		name: 'CubemapToCubeUV',
		uniforms: {
			'envMap': { value: null },
			'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },
			'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }
		},
		vertexShader: _getCommonVertexShader(),
		fragmentShader: `

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform samplerCube envMap;

			${ _getEncodings() }

			void main() {

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
				gl_FragColor.rgb = envMapTexelToLinear( textureCube( envMap, vec3( - vOutputDirection.x, vOutputDirection.yz ) ) ).rgb;
				gl_FragColor = linearToOutputTexel( gl_FragColor );

			}
		`,
		blending: NoBlending,
		depthTest: false,
		depthWrite: false
	} );
	return shaderMaterial;
}
function _getCommonVertexShader() {
	return `

		precision mediump float;
		precision mediump int;

		attribute vec3 position;
		attribute vec2 uv;
		attribute float faceIndex;

		varying vec3 vOutputDirection;

		// RH coordinate system; PMREM face-indexing convention
		vec3 getDirection( vec2 uv, float face ) {

			uv = 2.0 * uv - 1.0;

			vec3 direction = vec3( uv, 1.0 );

			if ( face == 0.0 ) {

				direction = direction.zyx; // ( 1, v, u ) pos x

			} else if ( face == 1.0 ) {

				direction = direction.xzy;
				direction.xz *= -1.0; // ( -u, 1, -v ) pos y

			} else if ( face == 2.0 ) {

				direction.x *= -1.0; // ( -u, v, 1 ) pos z

			} else if ( face == 3.0 ) {

				direction = direction.zyx;
				direction.xz *= -1.0; // ( -1, v, -u ) neg x

			} else if ( face == 4.0 ) {

				direction = direction.xzy;
				direction.xy *= -1.0; // ( -u, -1, v ) neg y

			} else if ( face == 5.0 ) {

				direction.z *= -1.0; // ( u, v, -1 ) neg z

			}

			return direction;

		}

		void main() {

			vOutputDirection = getDirection( uv, faceIndex );
			gl_Position = vec4( position, 1.0 );

		}
	`;
}
function _getEncodings() {
	return `

		uniform int inputEncoding;
		uniform int outputEncoding;

		#include <encodings_pars_fragment>

		vec4 inputTexelToLinear( vec4 value ) {

			if ( inputEncoding == 0 ) {

				return value;

			} else if ( inputEncoding == 1 ) {

				return sRGBToLinear( value );

			} else if ( inputEncoding == 2 ) {

				return RGBEToLinear( value );

			} else if ( inputEncoding == 3 ) {

				return RGBMToLinear( value, 7.0 );

			} else if ( inputEncoding == 4 ) {

				return RGBMToLinear( value, 16.0 );

			} else if ( inputEncoding == 5 ) {

				return RGBDToLinear( value, 256.0 );

			} else {

				return GammaToLinear( value, 2.2 );

			}

		}

		vec4 linearToOutputTexel( vec4 value ) {

			if ( outputEncoding == 0 ) {

				return value;

			} else if ( outputEncoding == 1 ) {

				return LinearTosRGB( value );

			} else if ( outputEncoding == 2 ) {

				return LinearToRGBE( value );

			} else if ( outputEncoding == 3 ) {

				return LinearToRGBM( value, 7.0 );

			} else if ( outputEncoding == 4 ) {

				return LinearToRGBM( value, 16.0 );

			} else if ( outputEncoding == 5 ) {

				return LinearToRGBD( value, 256.0 );

			} else {

				return LinearToGamma( value, 2.2 );

			}

		}

		vec4 envMapTexelToLinear( vec4 color ) {

			return inputTexelToLinear( color );

		}
	`;
}
function Face4( a, b, c, d, normal, color, materialIndex ) {
	console.warn( 'THREE.Face4 has been removed. A THREE.Face3 will be created instead.' );
	return new Face3( a, b, c, normal, color, materialIndex );
}
const LineStrip = 0;
const LinePieces = 1;
const NoColors = 0;
const FaceColors = 1;
const VertexColors = 2;
function MeshFaceMaterial( materials ) {
	console.warn( 'THREE.MeshFaceMaterial has been removed. Use an Array instead.' );
	return materials;
}
function MultiMaterial( materials ) {
	if ( materials === undefined ) materials = [];
	console.warn( 'THREE.MultiMaterial has been removed. Use an Array instead.' );
	materials.isMultiMaterial = true;
	materials.materials = materials;
	materials.clone = function () {
		return materials.slice();
	};
	return materials;
}
function PointCloud( geometry, material ) {
	console.warn( 'THREE.PointCloud has been renamed to THREE.Points.' );
	return new Points( geometry, material );
}
function Particle( material ) {
	console.warn( 'THREE.Particle has been renamed to THREE.Sprite.' );
	return new Sprite( material );
}
function ParticleSystem( geometry, material ) {
	console.warn( 'THREE.ParticleSystem has been renamed to THREE.Points.' );
	return new Points( geometry, material );
}
function PointCloudMaterial( parameters ) {
	console.warn( 'THREE.PointCloudMaterial has been renamed to THREE.PointsMaterial.' );
	return new PointsMaterial( parameters );
}
function ParticleBasicMaterial( parameters ) {
	console.warn( 'THREE.ParticleBasicMaterial has been renamed to THREE.PointsMaterial.' );
	return new PointsMaterial( parameters );
}
function ParticleSystemMaterial( parameters ) {
	console.warn( 'THREE.ParticleSystemMaterial has been renamed to THREE.PointsMaterial.' );
	return new PointsMaterial( parameters );
}
function Vertex( x, y, z ) {
	console.warn( 'THREE.Vertex has been removed. Use THREE.Vector3 instead.' );
	return new Vector3( x, y, z );
}
function DynamicBufferAttribute( array, itemSize ) {
	console.warn( 'THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setUsage( THREE.DynamicDrawUsage ) instead.' );
	return new BufferAttribute( array, itemSize ).setUsage( DynamicDrawUsage );
}
function Int8Attribute( array, itemSize ) {
	console.warn( 'THREE.Int8Attribute has been removed. Use new THREE.Int8BufferAttribute() instead.' );
	return new Int8BufferAttribute( array, itemSize );
}
function Uint8Attribute( array, itemSize ) {
	console.warn( 'THREE.Uint8Attribute has been removed. Use new THREE.Uint8BufferAttribute() instead.' );
	return new Uint8BufferAttribute( array, itemSize );
}
function Uint8ClampedAttribute( array, itemSize ) {
	console.warn( 'THREE.Uint8ClampedAttribute has been removed. Use new THREE.Uint8ClampedBufferAttribute() instead.' );
	return new Uint8ClampedBufferAttribute( array, itemSize );
}
function Int16Attribute( array, itemSize ) {
	console.warn( 'THREE.Int16Attribute has been removed. Use new THREE.Int16BufferAttribute() instead.' );
	return new Int16BufferAttribute( array, itemSize );
}
function Uint16Attribute( array, itemSize ) {
	console.warn( 'THREE.Uint16Attribute has been removed. Use new THREE.Uint16BufferAttribute() instead.' );
	return new Uint16BufferAttribute( array, itemSize );
}
function Int32Attribute( array, itemSize ) {
	console.warn( 'THREE.Int32Attribute has been removed. Use new THREE.Int32BufferAttribute() instead.' );
	return new Int32BufferAttribute( array, itemSize );
}
function Uint32Attribute( array, itemSize ) {
	console.warn( 'THREE.Uint32Attribute has been removed. Use new THREE.Uint32BufferAttribute() instead.' );
	return new Uint32BufferAttribute( array, itemSize );
}
function Float32Attribute( array, itemSize ) {
	console.warn( 'THREE.Float32Attribute has been removed. Use new THREE.Float32BufferAttribute() instead.' );
	return new Float32BufferAttribute( array, itemSize );
}
function Float64Attribute( array, itemSize ) {
	console.warn( 'THREE.Float64Attribute has been removed. Use new THREE.Float64BufferAttribute() instead.' );
	return new Float64BufferAttribute( array, itemSize );
}
Curve.create = function ( construct, getPoint ) {
	console.log( 'THREE.Curve.create() has been deprecated' );
	construct.prototype = Object.create( Curve.prototype );
	construct.prototype.constructor = construct;
	construct.prototype.getPoint = getPoint;
	return construct;
};
Object.assign( CurvePath.prototype, {
	createPointsGeometry: function ( divisions ) {
		console.warn( 'THREE.CurvePath: .createPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );
		const pts = this.getPoints( divisions );
		return this.createGeometry( pts );
	},
	createSpacedPointsGeometry: function ( divisions ) {
		console.warn( 'THREE.CurvePath: .createSpacedPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );
		const pts = this.getSpacedPoints( divisions );
		return this.createGeometry( pts );
	},
	createGeometry: function ( points ) {
		console.warn( 'THREE.CurvePath: .createGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );
		const geometry = new Geometry();
		for ( let i = 0, l = points.length; i < l; i ++ ) {
			const point = points[ i ];
			geometry.vertices.push( new Vector3( point.x, point.y, point.z || 0 ) );
		}
		return geometry;
	}
} );
Object.assign( Path.prototype, {
	fromPoints: function ( points ) {
		console.warn( 'THREE.Path: .fromPoints() has been renamed to .setFromPoints().' );
		return this.setFromPoints( points );
	}
} );
function ClosedSplineCurve3( points ) {
	console.warn( 'THREE.ClosedSplineCurve3 has been deprecated. Use THREE.CatmullRomCurve3 instead.' );
	CatmullRomCurve3.call( this, points );
	this.type = 'catmullrom';
	this.closed = true;
}
ClosedSplineCurve3.prototype = Object.create( CatmullRomCurve3.prototype );
function SplineCurve3( points ) {
	console.warn( 'THREE.SplineCurve3 has been deprecated. Use THREE.CatmullRomCurve3 instead.' );
	CatmullRomCurve3.call( this, points );
	this.type = 'catmullrom';
}
SplineCurve3.prototype = Object.create( CatmullRomCurve3.prototype );
function Spline( points ) {
	console.warn( 'THREE.Spline has been removed. Use THREE.CatmullRomCurve3 instead.' );
	CatmullRomCurve3.call( this, points );
	this.type = 'catmullrom';
}
Spline.prototype = Object.create( CatmullRomCurve3.prototype );
Object.assign( Spline.prototype, {
	initFromArray: function (  ) {
		console.error( 'THREE.Spline: .initFromArray() has been removed.' );
	},
	getControlPointsArray: function (  ) {
		console.error( 'THREE.Spline: .getControlPointsArray() has been removed.' );
	},
	reparametrizeByArcLength: function (  ) {
		console.error( 'THREE.Spline: .reparametrizeByArcLength() has been removed.' );
	}
} );
function AxisHelper( size ) {
	console.warn( 'THREE.AxisHelper has been renamed to THREE.AxesHelper.' );
	return new AxesHelper( size );
}
function BoundingBoxHelper( object, color ) {
	console.warn( 'THREE.BoundingBoxHelper has been deprecated. Creating a THREE.BoxHelper instead.' );
	return new BoxHelper( object, color );
}
function EdgesHelper( object, hex ) {
	console.warn( 'THREE.EdgesHelper has been removed. Use THREE.EdgesGeometry instead.' );
	return new LineSegments( new EdgesGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );
}
GridHelper.prototype.setColors = function () {
	console.error( 'THREE.GridHelper: setColors() has been deprecated, pass them in the constructor instead.' );
};
SkeletonHelper.prototype.update = function () {
	console.error( 'THREE.SkeletonHelper: update() no longer needs to be called.' );
};
function WireframeHelper( object, hex ) {
	console.warn( 'THREE.WireframeHelper has been removed. Use THREE.WireframeGeometry instead.' );
	return new LineSegments( new WireframeGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );
}
Object.assign( Loader.prototype, {
	extractUrlBase: function ( url ) {
		console.warn( 'THREE.Loader: .extractUrlBase() has been deprecated. Use THREE.LoaderUtils.extractUrlBase() instead.' );
		return LoaderUtils.extractUrlBase( url );
	}
} );
Loader.Handlers = {
	add: function (  ) {
		console.error( 'THREE.Loader: Handlers.add() has been removed. Use LoadingManager.addHandler() instead.' );
	},
	get: function (  ) {
		console.error( 'THREE.Loader: Handlers.get() has been removed. Use LoadingManager.getHandler() instead.' );
	}
};
function XHRLoader( manager ) {
	console.warn( 'THREE.XHRLoader has been renamed to THREE.FileLoader.' );
	return new FileLoader( manager );
}
function BinaryTextureLoader( manager ) {
	console.warn( 'THREE.BinaryTextureLoader has been renamed to THREE.DataTextureLoader.' );
	return new DataTextureLoader( manager );
}
Object.assign( ObjectLoader.prototype, {
	setTexturePath: function ( value ) {
		console.warn( 'THREE.ObjectLoader: .setTexturePath() has been renamed to .setResourcePath().' );
		return this.setResourcePath( value );
	}
} );
Object.assign( Box2.prototype, {
	center: function ( optionalTarget ) {
		console.warn( 'THREE.Box2: .center() has been renamed to .getCenter().' );
		return this.getCenter( optionalTarget );
	},
	empty: function () {
		console.warn( 'THREE.Box2: .empty() has been renamed to .isEmpty().' );
		return this.isEmpty();
	},
	isIntersectionBox: function ( box ) {
		console.warn( 'THREE.Box2: .isIntersectionBox() has been renamed to .intersectsBox().' );
		return this.intersectsBox( box );
	},
	size: function ( optionalTarget ) {
		console.warn( 'THREE.Box2: .size() has been renamed to .getSize().' );
		return this.getSize( optionalTarget );
	}
} );
Object.assign( Box3.prototype, {
	center: function ( optionalTarget ) {
		console.warn( 'THREE.Box3: .center() has been renamed to .getCenter().' );
		return this.getCenter( optionalTarget );
	},
	empty: function () {
		console.warn( 'THREE.Box3: .empty() has been renamed to .isEmpty().' );
		return this.isEmpty();
	},
	isIntersectionBox: function ( box ) {
		console.warn( 'THREE.Box3: .isIntersectionBox() has been renamed to .intersectsBox().' );
		return this.intersectsBox( box );
	},
	isIntersectionSphere: function ( sphere ) {
		console.warn( 'THREE.Box3: .isIntersectionSphere() has been renamed to .intersectsSphere().' );
		return this.intersectsSphere( sphere );
	},
	size: function ( optionalTarget ) {
		console.warn( 'THREE.Box3: .size() has been renamed to .getSize().' );
		return this.getSize( optionalTarget );
	}
} );
Object.assign( Sphere.prototype, {
	empty: function () {
		console.warn( 'THREE.Sphere: .empty() has been renamed to .isEmpty().' );
		return this.isEmpty();
	},
} );
Frustum.prototype.setFromMatrix = function ( m ) {
	console.warn( 'THREE.Frustum: .setFromMatrix() has been renamed to .setFromProjectionMatrix().' );
	return this.setFromProjectionMatrix( m );
};
Line3.prototype.center = function ( optionalTarget ) {
	console.warn( 'THREE.Line3: .center() has been renamed to .getCenter().' );
	return this.getCenter( optionalTarget );
};
Object.assign( MathUtils, {
	random16: function () {
		console.warn( 'THREE.Math: .random16() has been deprecated. Use Math.random() instead.' );
		return Math.random();
	},
	nearestPowerOfTwo: function ( value ) {
		console.warn( 'THREE.Math: .nearestPowerOfTwo() has been renamed to .floorPowerOfTwo().' );
		return MathUtils.floorPowerOfTwo( value );
	},
	nextPowerOfTwo: function ( value ) {
		console.warn( 'THREE.Math: .nextPowerOfTwo() has been renamed to .ceilPowerOfTwo().' );
		return MathUtils.ceilPowerOfTwo( value );
	}
} );
Object.assign( Matrix3.prototype, {
	flattenToArrayOffset: function ( array, offset ) {
		console.warn( "THREE.Matrix3: .flattenToArrayOffset() has been deprecated. Use .toArray() instead." );
		return this.toArray( array, offset );
	},
	multiplyVector3: function ( vector ) {
		console.warn( 'THREE.Matrix3: .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead.' );
		return vector.applyMatrix3( this );
	},
	multiplyVector3Array: function (  ) {
		console.error( 'THREE.Matrix3: .multiplyVector3Array() has been removed.' );
	},
	applyToBufferAttribute: function ( attribute ) {
		console.warn( 'THREE.Matrix3: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix3( matrix ) instead.' );
		return attribute.applyMatrix3( this );
	},
	applyToVector3Array: function (  ) {
		console.error( 'THREE.Matrix3: .applyToVector3Array() has been removed.' );
	}
} );
Object.assign( Matrix4.prototype, {
	extractPosition: function ( m ) {
		console.warn( 'THREE.Matrix4: .extractPosition() has been renamed to .copyPosition().' );
		return this.copyPosition( m );
	},
	flattenToArrayOffset: function ( array, offset ) {
		console.warn( "THREE.Matrix4: .flattenToArrayOffset() has been deprecated. Use .toArray() instead." );
		return this.toArray( array, offset );
	},
	getPosition: function () {
		console.warn( 'THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead.' );
		return new Vector3().setFromMatrixColumn( this, 3 );
	},
	setRotationFromQuaternion: function ( q ) {
		console.warn( 'THREE.Matrix4: .setRotationFromQuaternion() has been renamed to .makeRotationFromQuaternion().' );
		return this.makeRotationFromQuaternion( q );
	},
	multiplyToArray: function () {
		console.warn( 'THREE.Matrix4: .multiplyToArray() has been removed.' );
	},
	multiplyVector3: function ( vector ) {
		console.warn( 'THREE.Matrix4: .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
		return vector.applyMatrix4( this );
	},
	multiplyVector4: function ( vector ) {
		console.warn( 'THREE.Matrix4: .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
		return vector.applyMatrix4( this );
	},
	multiplyVector3Array: function (  ) {
		console.error( 'THREE.Matrix4: .multiplyVector3Array() has been removed.' );
	},
	rotateAxis: function ( v ) {
		console.warn( 'THREE.Matrix4: .rotateAxis() has been removed. Use Vector3.transformDirection( matrix ) instead.' );
		v.transformDirection( this );
	},
	crossVector: function ( vector ) {
		console.warn( 'THREE.Matrix4: .crossVector() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
		return vector.applyMatrix4( this );
	},
	translate: function () {
		console.error( 'THREE.Matrix4: .translate() has been removed.' );
	},
	rotateX: function () {
		console.error( 'THREE.Matrix4: .rotateX() has been removed.' );
	},
	rotateY: function () {
		console.error( 'THREE.Matrix4: .rotateY() has been removed.' );
	},
	rotateZ: function () {
		console.error( 'THREE.Matrix4: .rotateZ() has been removed.' );
	},
	rotateByAxis: function () {
		console.error( 'THREE.Matrix4: .rotateByAxis() has been removed.' );
	},
	applyToBufferAttribute: function ( attribute ) {
		console.warn( 'THREE.Matrix4: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix4( matrix ) instead.' );
		return attribute.applyMatrix4( this );
	},
	applyToVector3Array: function (  ) {
		console.error( 'THREE.Matrix4: .applyToVector3Array() has been removed.' );
	},
	makeFrustum: function ( left, right, bottom, top, near, far ) {
		console.warn( 'THREE.Matrix4: .makeFrustum() has been removed. Use .makePerspective( left, right, top, bottom, near, far ) instead.' );
		return this.makePerspective( left, right, top, bottom, near, far );
	}
} );
Plane.prototype.isIntersectionLine = function ( line ) {
	console.warn( 'THREE.Plane: .isIntersectionLine() has been renamed to .intersectsLine().' );
	return this.intersectsLine( line );
};
Quaternion.prototype.multiplyVector3 = function ( vector ) {
	console.warn( 'THREE.Quaternion: .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead.' );
	return vector.applyQuaternion( this );
};
Object.assign( Ray.prototype, {
	isIntersectionBox: function ( box ) {
		console.warn( 'THREE.Ray: .isIntersectionBox() has been renamed to .intersectsBox().' );
		return this.intersectsBox( box );
	},
	isIntersectionPlane: function ( plane ) {
		console.warn( 'THREE.Ray: .isIntersectionPlane() has been renamed to .intersectsPlane().' );
		return this.intersectsPlane( plane );
	},
	isIntersectionSphere: function ( sphere ) {
		console.warn( 'THREE.Ray: .isIntersectionSphere() has been renamed to .intersectsSphere().' );
		return this.intersectsSphere( sphere );
	}
} );
Object.assign( Triangle.prototype, {
	area: function () {
		console.warn( 'THREE.Triangle: .area() has been renamed to .getArea().' );
		return this.getArea();
	},
	barycoordFromPoint: function ( point, target ) {
		console.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );
		return this.getBarycoord( point, target );
	},
	midpoint: function ( target ) {
		console.warn( 'THREE.Triangle: .midpoint() has been renamed to .getMidpoint().' );
		return this.getMidpoint( target );
	},
	normal: function ( target ) {
		console.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );
		return this.getNormal( target );
	},
	plane: function ( target ) {
		console.warn( 'THREE.Triangle: .plane() has been renamed to .getPlane().' );
		return this.getPlane( target );
	}
} );
Object.assign( Triangle, {
	barycoordFromPoint: function ( point, a, b, c, target ) {
		console.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );
		return Triangle.getBarycoord( point, a, b, c, target );
	},
	normal: function ( a, b, c, target ) {
		console.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );
		return Triangle.getNormal( a, b, c, target );
	}
} );
Object.assign( Shape.prototype, {
	extractAllPoints: function ( divisions ) {
		console.warn( 'THREE.Shape: .extractAllPoints() has been removed. Use .extractPoints() instead.' );
		return this.extractPoints( divisions );
	},
	extrude: function ( options ) {
		console.warn( 'THREE.Shape: .extrude() has been removed. Use ExtrudeGeometry() instead.' );
		return new ExtrudeGeometry( this, options );
	},
	makeGeometry: function ( options ) {
		console.warn( 'THREE.Shape: .makeGeometry() has been removed. Use ShapeGeometry() instead.' );
		return new ShapeGeometry( this, options );
	}
} );
Object.assign( Vector2.prototype, {
	fromAttribute: function ( attribute, index, offset ) {
		console.warn( 'THREE.Vector2: .fromAttribute() has been renamed to .fromBufferAttribute().' );
		return this.fromBufferAttribute( attribute, index, offset );
	},
	distanceToManhattan: function ( v ) {
		console.warn( 'THREE.Vector2: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );
		return this.manhattanDistanceTo( v );
	},
	lengthManhattan: function () {
		console.warn( 'THREE.Vector2: .lengthManhattan() has been renamed to .manhattanLength().' );
		return this.manhattanLength();
	}
} );
Object.assign( Vector3.prototype, {
	setEulerFromRotationMatrix: function () {
		console.error( 'THREE.Vector3: .setEulerFromRotationMatrix() has been removed. Use Euler.setFromRotationMatrix() instead.' );
	},
	setEulerFromQuaternion: function () {
		console.error( 'THREE.Vector3: .setEulerFromQuaternion() has been removed. Use Euler.setFromQuaternion() instead.' );
	},
	getPositionFromMatrix: function ( m ) {
		console.warn( 'THREE.Vector3: .getPositionFromMatrix() has been renamed to .setFromMatrixPosition().' );
		return this.setFromMatrixPosition( m );
	},
	getScaleFromMatrix: function ( m ) {
		console.warn( 'THREE.Vector3: .getScaleFromMatrix() has been renamed to .setFromMatrixScale().' );
		return this.setFromMatrixScale( m );
	},
	getColumnFromMatrix: function ( index, matrix ) {
		console.warn( 'THREE.Vector3: .getColumnFromMatrix() has been renamed to .setFromMatrixColumn().' );
		return this.setFromMatrixColumn( matrix, index );
	},
	applyProjection: function ( m ) {
		console.warn( 'THREE.Vector3: .applyProjection() has been removed. Use .applyMatrix4( m ) instead.' );
		return this.applyMatrix4( m );
	},
	fromAttribute: function ( attribute, index, offset ) {
		console.warn( 'THREE.Vector3: .fromAttribute() has been renamed to .fromBufferAttribute().' );
		return this.fromBufferAttribute( attribute, index, offset );
	},
	distanceToManhattan: function ( v ) {
		console.warn( 'THREE.Vector3: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );
		return this.manhattanDistanceTo( v );
	},
	lengthManhattan: function () {
		console.warn( 'THREE.Vector3: .lengthManhattan() has been renamed to .manhattanLength().' );
		return this.manhattanLength();
	}
} );
Object.assign( Vector4.prototype, {
	fromAttribute: function ( attribute, index, offset ) {
		console.warn( 'THREE.Vector4: .fromAttribute() has been renamed to .fromBufferAttribute().' );
		return this.fromBufferAttribute( attribute, index, offset );
	},
	lengthManhattan: function () {
		console.warn( 'THREE.Vector4: .lengthManhattan() has been renamed to .manhattanLength().' );
		return this.manhattanLength();
	}
} );
Object.assign( Geometry.prototype, {
	computeTangents: function () {
		console.error( 'THREE.Geometry: .computeTangents() has been removed.' );
	},
	computeLineDistances: function () {
		console.error( 'THREE.Geometry: .computeLineDistances() has been removed. Use THREE.Line.computeLineDistances() instead.' );
	},
	applyMatrix: function ( matrix ) {
		console.warn( 'THREE.Geometry: .applyMatrix() has been renamed to .applyMatrix4().' );
		return this.applyMatrix4( matrix );
	}
} );
Object.assign( Object3D.prototype, {
	getChildByName: function ( name ) {
		console.warn( 'THREE.Object3D: .getChildByName() has been renamed to .getObjectByName().' );
		return this.getObjectByName( name );
	},
	renderDepth: function () {
		console.warn( 'THREE.Object3D: .renderDepth has been removed. Use .renderOrder, instead.' );
	},
	translate: function ( distance, axis ) {
		console.warn( 'THREE.Object3D: .translate() has been removed. Use .translateOnAxis( axis, distance ) instead.' );
		return this.translateOnAxis( axis, distance );
	},
	getWorldRotation: function () {
		console.error( 'THREE.Object3D: .getWorldRotation() has been removed. Use THREE.Object3D.getWorldQuaternion( target ) instead.' );
	},
	applyMatrix: function ( matrix ) {
		console.warn( 'THREE.Object3D: .applyMatrix() has been renamed to .applyMatrix4().' );
		return this.applyMatrix4( matrix );
	}
} );
Object.defineProperties( Object3D.prototype, {
	eulerOrder: {
		get: function () {
			console.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );
			return this.rotation.order;
		},
		set: function ( value ) {
			console.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );
			this.rotation.order = value;
		}
	},
	useQuaternion: {
		get: function () {
			console.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );
		},
		set: function () {
			console.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );
		}
	}
} );
Object.assign( Mesh.prototype, {
	setDrawMode: function () {
		console.error( 'THREE.Mesh: .setDrawMode() has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.' );
	},
} );
Object.defineProperties( Mesh.prototype, {
	drawMode: {
		get: function () {
			console.error( 'THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode.' );
			return TrianglesDrawMode;
		},
		set: function () {
			console.error( 'THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.' );
		}
	}
} );
Object.defineProperties( LOD.prototype, {
	objects: {
		get: function () {
			console.warn( 'THREE.LOD: .objects has been renamed to .levels.' );
			return this.levels;
		}
	}
} );
Object.defineProperty( Skeleton.prototype, 'useVertexTexture', {
	get: function () {
		console.warn( 'THREE.Skeleton: useVertexTexture has been removed.' );
	},
	set: function () {
		console.warn( 'THREE.Skeleton: useVertexTexture has been removed.' );
	}
} );
SkinnedMesh.prototype.initBones = function () {
	console.error( 'THREE.SkinnedMesh: initBones() has been removed.' );
};
Object.defineProperty( Curve.prototype, '__arcLengthDivisions', {
	get: function () {
		console.warn( 'THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.' );
		return this.arcLengthDivisions;
	},
	set: function ( value ) {
		console.warn( 'THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.' );
		this.arcLengthDivisions = value;
	}
} );
PerspectiveCamera.prototype.setLens = function ( focalLength, filmGauge ) {
	console.warn( "THREE.PerspectiveCamera.setLens is deprecated. " +
			"Use .setFocalLength and .filmGauge for a photographic setup." );
	if ( filmGauge !== undefined ) this.filmGauge = filmGauge;
	this.setFocalLength( focalLength );
};
Object.defineProperties( Light.prototype, {
	onlyShadow: {
		set: function () {
			console.warn( 'THREE.Light: .onlyShadow has been removed.' );
		}
	},
	shadowCameraFov: {
		set: function ( value ) {
			console.warn( 'THREE.Light: .shadowCameraFov is now .shadow.camera.fov.' );
			this.shadow.camera.fov = value;
		}
	},
	shadowCameraLeft: {
		set: function ( value ) {
			console.warn( 'THREE.Light: .shadowCameraLeft is now .shadow.camera.left.' );
			this.shadow.camera.left = value;
		}
	},
	shadowCameraRight: {
		set: function ( value ) {
			console.warn( 'THREE.Light: .shadowCameraRight is now .shadow.camera.right.' );
			this.shadow.camera.right = value;
		}
	},
	shadowCameraTop: {
		set: function ( value ) {
			console.warn( 'THREE.Light: .shadowCameraTop is now .shadow.camera.top.' );
			this.shadow.camera.top = value;
		}
	},
	shadowCameraBottom: {
		set: function ( value ) {
			console.warn( 'THREE.Light: .shadowCameraBottom is now .shadow.camera.bottom.' );
			this.shadow.camera.bottom = value;
		}
	},
	shadowCameraNear: {
		set: function ( value ) {
			console.warn( 'THREE.Light: .shadowCameraNear is now .shadow.camera.near.' );
			this.shadow.camera.near = value;
		}
	},
	shadowCameraFar: {
		set: function ( value ) {
			console.warn( 'THREE.Light: .shadowCameraFar is now .shadow.camera.far.' );
			this.shadow.camera.far = value;
		}
	},
	shadowCameraVisible: {
		set: function () {
			console.warn( 'THREE.Light: .shadowCameraVisible has been removed. Use new THREE.CameraHelper( light.shadow.camera ) instead.' );
		}
	},
	shadowBias: {
		set: function ( value ) {
			console.warn( 'THREE.Light: .shadowBias is now .shadow.bias.' );
			this.shadow.bias = value;
		}
	},
	shadowDarkness: {
		set: function () {
			console.warn( 'THREE.Light: .shadowDarkness has been removed.' );
		}
	},
	shadowMapWidth: {
		set: function ( value ) {
			console.warn( 'THREE.Light: .shadowMapWidth is now .shadow.mapSize.width.' );
			this.shadow.mapSize.width = value;
		}
	},
	shadowMapHeight: {
		set: function ( value ) {
			console.warn( 'THREE.Light: .shadowMapHeight is now .shadow.mapSize.height.' );
			this.shadow.mapSize.height = value;
		}
	}
} );
Object.defineProperties( BufferAttribute.prototype, {
	length: {
		get: function () {
			console.warn( 'THREE.BufferAttribute: .length has been deprecated. Use .count instead.' );
			return this.array.length;
		}
	},
	dynamic: {
		get: function () {
			console.warn( 'THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.' );
			return this.usage === DynamicDrawUsage;
		},
		set: function (  ) {
			console.warn( 'THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.' );
			this.setUsage( DynamicDrawUsage );
		}
	}
} );
Object.assign( BufferAttribute.prototype, {
	setDynamic: function ( value ) {
		console.warn( 'THREE.BufferAttribute: .setDynamic() has been deprecated. Use .setUsage() instead.' );
		this.setUsage( value === true ? DynamicDrawUsage : StaticDrawUsage );
		return this;
	},
	copyIndicesArray: function (  ) {
		console.error( 'THREE.BufferAttribute: .copyIndicesArray() has been removed.' );
	},
	setArray: function (  ) {
		console.error( 'THREE.BufferAttribute: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers' );
	}
} );
Object.assign( BufferGeometry.prototype, {
	addIndex: function ( index ) {
		console.warn( 'THREE.BufferGeometry: .addIndex() has been renamed to .setIndex().' );
		this.setIndex( index );
	},
	addAttribute: function ( name, attribute ) {
		console.warn( 'THREE.BufferGeometry: .addAttribute() has been renamed to .setAttribute().' );
		if ( ! ( attribute && attribute.isBufferAttribute ) && ! ( attribute && attribute.isInterleavedBufferAttribute ) ) {
			console.warn( 'THREE.BufferGeometry: .addAttribute() now expects ( name, attribute ).' );
			return this.setAttribute( name, new BufferAttribute( arguments[ 1 ], arguments[ 2 ] ) );
		}
		if ( name === 'index' ) {
			console.warn( 'THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute.' );
			this.setIndex( attribute );
			return this;
		}
		return this.setAttribute( name, attribute );
	},
	addDrawCall: function ( start, count, indexOffset ) {
		if ( indexOffset !== undefined ) {
			console.warn( 'THREE.BufferGeometry: .addDrawCall() no longer supports indexOffset.' );
		}
		console.warn( 'THREE.BufferGeometry: .addDrawCall() is now .addGroup().' );
		this.addGroup( start, count );
	},
	clearDrawCalls: function () {
		console.warn( 'THREE.BufferGeometry: .clearDrawCalls() is now .clearGroups().' );
		this.clearGroups();
	},
	computeTangents: function () {
		console.warn( 'THREE.BufferGeometry: .computeTangents() has been removed.' );
	},
	computeOffsets: function () {
		console.warn( 'THREE.BufferGeometry: .computeOffsets() has been removed.' );
	},
	removeAttribute: function ( name ) {
		console.warn( 'THREE.BufferGeometry: .removeAttribute() has been renamed to .deleteAttribute().' );
		return this.deleteAttribute( name );
	},
	applyMatrix: function ( matrix ) {
		console.warn( 'THREE.BufferGeometry: .applyMatrix() has been renamed to .applyMatrix4().' );
		return this.applyMatrix4( matrix );
	}
} );
Object.defineProperties( BufferGeometry.prototype, {
	drawcalls: {
		get: function () {
			console.error( 'THREE.BufferGeometry: .drawcalls has been renamed to .groups.' );
			return this.groups;
		}
	},
	offsets: {
		get: function () {
			console.warn( 'THREE.BufferGeometry: .offsets has been renamed to .groups.' );
			return this.groups;
		}
	}
} );
Object.defineProperties( InstancedBufferGeometry.prototype, {
	maxInstancedCount: {
		get: function () {
			console.warn( 'THREE.InstancedBufferGeometry: .maxInstancedCount has been renamed to .instanceCount.' );
			return this.instanceCount;
		},
		set: function ( value ) {
			console.warn( 'THREE.InstancedBufferGeometry: .maxInstancedCount has been renamed to .instanceCount.' );
			this.instanceCount = value;
		}
	}
} );
Object.defineProperties( Raycaster.prototype, {
	linePrecision: {
		get: function () {
			console.warn( 'THREE.Raycaster: .linePrecision has been deprecated. Use .params.Line.threshold instead.' );
			return this.params.Line.threshold;
		},
		set: function ( value ) {
			console.warn( 'THREE.Raycaster: .linePrecision has been deprecated. Use .params.Line.threshold instead.' );
			this.params.Line.threshold = value;
		}
	}
} );
Object.defineProperties( InterleavedBuffer.prototype, {
	dynamic: {
		get: function () {
			console.warn( 'THREE.InterleavedBuffer: .length has been deprecated. Use .usage instead.' );
			return this.usage === DynamicDrawUsage;
		},
		set: function ( value ) {
			console.warn( 'THREE.InterleavedBuffer: .length has been deprecated. Use .usage instead.' );
			this.setUsage( value );
		}
	}
} );
Object.assign( InterleavedBuffer.prototype, {
	setDynamic: function ( value ) {
		console.warn( 'THREE.InterleavedBuffer: .setDynamic() has been deprecated. Use .setUsage() instead.' );
		this.setUsage( value === true ? DynamicDrawUsage : StaticDrawUsage );
		return this;
	},
	setArray: function (  ) {
		console.error( 'THREE.InterleavedBuffer: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers' );
	}
} );
Object.assign( ExtrudeBufferGeometry.prototype, {
	getArrays: function () {
		console.error( 'THREE.ExtrudeBufferGeometry: .getArrays() has been removed.' );
	},
	addShapeList: function () {
		console.error( 'THREE.ExtrudeBufferGeometry: .addShapeList() has been removed.' );
	},
	addShape: function () {
		console.error( 'THREE.ExtrudeBufferGeometry: .addShape() has been removed.' );
	}
} );
Object.assign( Scene.prototype, {
	dispose: function () {
		console.error( 'THREE.Scene: .dispose() has been removed.' );
	}
} );
Object.defineProperties( Uniform.prototype, {
	dynamic: {
		set: function () {
			console.warn( 'THREE.Uniform: .dynamic has been removed. Use object.onBeforeRender() instead.' );
		}
	},
	onUpdate: {
		value: function () {
			console.warn( 'THREE.Uniform: .onUpdate() has been removed. Use object.onBeforeRender() instead.' );
			return this;
		}
	}
} );
Object.defineProperties( Material.prototype, {
	wrapAround: {
		get: function () {
			console.warn( 'THREE.Material: .wrapAround has been removed.' );
		},
		set: function () {
			console.warn( 'THREE.Material: .wrapAround has been removed.' );
		}
	},
	overdraw: {
		get: function () {
			console.warn( 'THREE.Material: .overdraw has been removed.' );
		},
		set: function () {
			console.warn( 'THREE.Material: .overdraw has been removed.' );
		}
	},
	wrapRGB: {
		get: function () {
			console.warn( 'THREE.Material: .wrapRGB has been removed.' );
			return new Color();
		}
	},
	shading: {
		get: function () {
			console.error( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
		},
		set: function ( value ) {
			console.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
			this.flatShading = ( value === FlatShading );
		}
	},
	stencilMask: {
		get: function () {
			console.warn( 'THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.' );
			return this.stencilFuncMask;
		},
		set: function ( value ) {
			console.warn( 'THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.' );
			this.stencilFuncMask = value;
		}
	}
} );
Object.defineProperties( MeshPhongMaterial.prototype, {
	metal: {
		get: function () {
			console.warn( 'THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead.' );
			return false;
		},
		set: function () {
			console.warn( 'THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead' );
		}
	}
} );
Object.defineProperties( MeshPhysicalMaterial.prototype, {
	transparency: {
		get: function () {
			console.warn( 'THREE.MeshPhysicalMaterial: .transparency has been renamed to .transmission.' );
			return this.transmission;
		},
		set: function ( value ) {
			console.warn( 'THREE.MeshPhysicalMaterial: .transparency has been renamed to .transmission.' );
			this.transmission = value;
		}
	}
} );
Object.defineProperties( ShaderMaterial.prototype, {
	derivatives: {
		get: function () {
			console.warn( 'THREE.ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );
			return this.extensions.derivatives;
		},
		set: function ( value ) {
			console.warn( 'THREE. ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );
			this.extensions.derivatives = value;
		}
	}
} );
Object.assign( WebGLRenderer.prototype, {
	clearTarget: function ( renderTarget, color, depth, stencil ) {
		console.warn( 'THREE.WebGLRenderer: .clearTarget() has been deprecated. Use .setRenderTarget() and .clear() instead.' );
		this.setRenderTarget( renderTarget );
		this.clear( color, depth, stencil );
	},
	animate: function ( callback ) {
		console.warn( 'THREE.WebGLRenderer: .animate() is now .setAnimationLoop().' );
		this.setAnimationLoop( callback );
	},
	getCurrentRenderTarget: function () {
		console.warn( 'THREE.WebGLRenderer: .getCurrentRenderTarget() is now .getRenderTarget().' );
		return this.getRenderTarget();
	},
	getMaxAnisotropy: function () {
		console.warn( 'THREE.WebGLRenderer: .getMaxAnisotropy() is now .capabilities.getMaxAnisotropy().' );
		return this.capabilities.getMaxAnisotropy();
	},
	getPrecision: function () {
		console.warn( 'THREE.WebGLRenderer: .getPrecision() is now .capabilities.precision.' );
		return this.capabilities.precision;
	},
	resetGLState: function () {
		console.warn( 'THREE.WebGLRenderer: .resetGLState() is now .state.reset().' );
		return this.state.reset();
	},
	supportsFloatTextures: function () {
		console.warn( 'THREE.WebGLRenderer: .supportsFloatTextures() is now .extensions.get( \'OES_texture_float\' ).' );
		return this.extensions.get( 'OES_texture_float' );
	},
	supportsHalfFloatTextures: function () {
		console.warn( 'THREE.WebGLRenderer: .supportsHalfFloatTextures() is now .extensions.get( \'OES_texture_half_float\' ).' );
		return this.extensions.get( 'OES_texture_half_float' );
	},
	supportsStandardDerivatives: function () {
		console.warn( 'THREE.WebGLRenderer: .supportsStandardDerivatives() is now .extensions.get( \'OES_standard_derivatives\' ).' );
		return this.extensions.get( 'OES_standard_derivatives' );
	},
	supportsCompressedTextureS3TC: function () {
		console.warn( 'THREE.WebGLRenderer: .supportsCompressedTextureS3TC() is now .extensions.get( \'WEBGL_compressed_texture_s3tc\' ).' );
		return this.extensions.get( 'WEBGL_compressed_texture_s3tc' );
	},
	supportsCompressedTexturePVRTC: function () {
		console.warn( 'THREE.WebGLRenderer: .supportsCompressedTexturePVRTC() is now .extensions.get( \'WEBGL_compressed_texture_pvrtc\' ).' );
		return this.extensions.get( 'WEBGL_compressed_texture_pvrtc' );
	},
	supportsBlendMinMax: function () {
		console.warn( 'THREE.WebGLRenderer: .supportsBlendMinMax() is now .extensions.get( \'EXT_blend_minmax\' ).' );
		return this.extensions.get( 'EXT_blend_minmax' );
	},
	supportsVertexTextures: function () {
		console.warn( 'THREE.WebGLRenderer: .supportsVertexTextures() is now .capabilities.vertexTextures.' );
		return this.capabilities.vertexTextures;
	},
	supportsInstancedArrays: function () {
		console.warn( 'THREE.WebGLRenderer: .supportsInstancedArrays() is now .extensions.get( \'ANGLE_instanced_arrays\' ).' );
		return this.extensions.get( 'ANGLE_instanced_arrays' );
	},
	enableScissorTest: function ( boolean ) {
		console.warn( 'THREE.WebGLRenderer: .enableScissorTest() is now .setScissorTest().' );
		this.setScissorTest( boolean );
	},
	initMaterial: function () {
		console.warn( 'THREE.WebGLRenderer: .initMaterial() has been removed.' );
	},
	addPrePlugin: function () {
		console.warn( 'THREE.WebGLRenderer: .addPrePlugin() has been removed.' );
	},
	addPostPlugin: function () {
		console.warn( 'THREE.WebGLRenderer: .addPostPlugin() has been removed.' );
	},
	updateShadowMap: function () {
		console.warn( 'THREE.WebGLRenderer: .updateShadowMap() has been removed.' );
	},
	setFaceCulling: function () {
		console.warn( 'THREE.WebGLRenderer: .setFaceCulling() has been removed.' );
	},
	allocTextureUnit: function () {
		console.warn( 'THREE.WebGLRenderer: .allocTextureUnit() has been removed.' );
	},
	setTexture: function () {
		console.warn( 'THREE.WebGLRenderer: .setTexture() has been removed.' );
	},
	setTexture2D: function () {
		console.warn( 'THREE.WebGLRenderer: .setTexture2D() has been removed.' );
	},
	setTextureCube: function () {
		console.warn( 'THREE.WebGLRenderer: .setTextureCube() has been removed.' );
	},
	getActiveMipMapLevel: function () {
		console.warn( 'THREE.WebGLRenderer: .getActiveMipMapLevel() is now .getActiveMipmapLevel().' );
		return this.getActiveMipmapLevel();
	}
} );
Object.defineProperties( WebGLRenderer.prototype, {
	shadowMapEnabled: {
		get: function () {
			return this.shadowMap.enabled;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderer: .shadowMapEnabled is now .shadowMap.enabled.' );
			this.shadowMap.enabled = value;
		}
	},
	shadowMapType: {
		get: function () {
			return this.shadowMap.type;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderer: .shadowMapType is now .shadowMap.type.' );
			this.shadowMap.type = value;
		}
	},
	shadowMapCullFace: {
		get: function () {
			console.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );
			return undefined;
		},
		set: function (  ) {
			console.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );
		}
	},
	context: {
		get: function () {
			console.warn( 'THREE.WebGLRenderer: .context has been removed. Use .getContext() instead.' );
			return this.getContext();
		}
	},
	vr: {
		get: function () {
			console.warn( 'THREE.WebGLRenderer: .vr has been renamed to .xr' );
			return this.xr;
		}
	},
	gammaInput: {
		get: function () {
			console.warn( 'THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.' );
			return false;
		},
		set: function () {
			console.warn( 'THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.' );
		}
	},
	gammaOutput: {
		get: function () {
			console.warn( 'THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.' );
			return false;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.' );
			this.outputEncoding = ( value === true ) ? sRGBEncoding : LinearEncoding;
		}
	},
	toneMappingWhitePoint: {
		get: function () {
			console.warn( 'THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.' );
			return 1.0;
		},
		set: function () {
			console.warn( 'THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.' );
		}
	},
} );
Object.defineProperties( WebGLShadowMap.prototype, {
	cullFace: {
		get: function () {
			console.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );
			return undefined;
		},
		set: function (  ) {
			console.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );
		}
	},
	renderReverseSided: {
		get: function () {
			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );
			return undefined;
		},
		set: function () {
			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );
		}
	},
	renderSingleSided: {
		get: function () {
			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );
			return undefined;
		},
		set: function () {
			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );
		}
	}
} );
function WebGLRenderTargetCube( width, height, options ) {
	console.warn( 'THREE.WebGLRenderTargetCube( width, height, options ) is now WebGLCubeRenderTarget( size, options ).' );
	return new WebGLCubeRenderTarget( width, options );
}
Object.defineProperties( WebGLRenderTarget.prototype, {
	wrapS: {
		get: function () {
			console.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );
			return this.texture.wrapS;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );
			this.texture.wrapS = value;
		}
	},
	wrapT: {
		get: function () {
			console.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );
			return this.texture.wrapT;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );
			this.texture.wrapT = value;
		}
	},
	magFilter: {
		get: function () {
			console.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );
			return this.texture.magFilter;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );
			this.texture.magFilter = value;
		}
	},
	minFilter: {
		get: function () {
			console.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );
			return this.texture.minFilter;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );
			this.texture.minFilter = value;
		}
	},
	anisotropy: {
		get: function () {
			console.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );
			return this.texture.anisotropy;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );
			this.texture.anisotropy = value;
		}
	},
	offset: {
		get: function () {
			console.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );
			return this.texture.offset;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );
			this.texture.offset = value;
		}
	},
	repeat: {
		get: function () {
			console.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );
			return this.texture.repeat;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );
			this.texture.repeat = value;
		}
	},
	format: {
		get: function () {
			console.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );
			return this.texture.format;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );
			this.texture.format = value;
		}
	},
	type: {
		get: function () {
			console.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );
			return this.texture.type;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );
			this.texture.type = value;
		}
	},
	generateMipmaps: {
		get: function () {
			console.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );
			return this.texture.generateMipmaps;
		},
		set: function ( value ) {
			console.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );
			this.texture.generateMipmaps = value;
		}
	}
} );
Object.defineProperties( Audio.prototype, {
	load: {
		value: function ( file ) {
			console.warn( 'THREE.Audio: .load has been deprecated. Use THREE.AudioLoader instead.' );
			const scope = this;
			const audioLoader = new AudioLoader();
			audioLoader.load( file, function ( buffer ) {
				scope.setBuffer( buffer );
			} );
			return this;
		}
	},
	startTime: {
		set: function () {
			console.warn( 'THREE.Audio: .startTime is now .play( delay ).' );
		}
	}
} );
AudioAnalyser.prototype.getData = function () {
	console.warn( 'THREE.AudioAnalyser: .getData() is now .getFrequencyData().' );
	return this.getFrequencyData();
};
CubeCamera.prototype.updateCubeMap = function ( renderer, scene ) {
	console.warn( 'THREE.CubeCamera: .updateCubeMap() is now .update().' );
	return this.update( renderer, scene );
};
const GeometryUtils = {
	merge: function ( geometry1, geometry2, materialIndexOffset ) {
		console.warn( 'THREE.GeometryUtils: .merge() has been moved to Geometry. Use geometry.merge( geometry2, matrix, materialIndexOffset ) instead.' );
		let matrix;
		if ( geometry2.isMesh ) {
			geometry2.matrixAutoUpdate && geometry2.updateMatrix();
			matrix = geometry2.matrix;
			geometry2 = geometry2.geometry;
		}
		geometry1.merge( geometry2, matrix, materialIndexOffset );
	},
	center: function ( geometry ) {
		console.warn( 'THREE.GeometryUtils: .center() has been moved to Geometry. Use geometry.center() instead.' );
		return geometry.center();
	}
};
ImageUtils.crossOrigin = undefined;
ImageUtils.loadTexture = function ( url, mapping, onLoad, onError ) {
	console.warn( 'THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.' );
	const loader = new TextureLoader();
	loader.setCrossOrigin( this.crossOrigin );
	const texture = loader.load( url, onLoad, undefined, onError );
	if ( mapping ) texture.mapping = mapping;
	return texture;
};
ImageUtils.loadTextureCube = function ( urls, mapping, onLoad, onError ) {
	console.warn( 'THREE.ImageUtils.loadTextureCube has been deprecated. Use THREE.CubeTextureLoader() instead.' );
	const loader = new CubeTextureLoader();
	loader.setCrossOrigin( this.crossOrigin );
	const texture = loader.load( urls, onLoad, undefined, onError );
	if ( mapping ) texture.mapping = mapping;
	return texture;
};
ImageUtils.loadCompressedTexture = function () {
	console.error( 'THREE.ImageUtils.loadCompressedTexture has been removed. Use THREE.DDSLoader instead.' );
};
ImageUtils.loadCompressedTextureCube = function () {
	console.error( 'THREE.ImageUtils.loadCompressedTextureCube has been removed. Use THREE.DDSLoader instead.' );
};
function CanvasRenderer() {
	console.error( 'THREE.CanvasRenderer has been removed' );
}
function JSONLoader() {
	console.error( 'THREE.JSONLoader has been removed.' );
}
const SceneUtils = {
	createMultiMaterialObject: function (  ) {
		console.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );
	},
	detach: function (  ) {
		console.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );
	},
	attach: function (  ) {
		console.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );
	}
};
function LensFlare() {
	console.error( 'THREE.LensFlare has been moved to /examples/jsm/objects/Lensflare.js' );
}
if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
	__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'register', { detail: {
		revision: REVISION,
	} } ) );
}

var three_module = /*#__PURE__*/Object.freeze({
	__proto__: null,
	ACESFilmicToneMapping: ACESFilmicToneMapping,
	AddEquation: AddEquation,
	AddOperation: AddOperation,
	AdditiveAnimationBlendMode: AdditiveAnimationBlendMode,
	AdditiveBlending: AdditiveBlending,
	AlphaFormat: AlphaFormat,
	AlwaysDepth: AlwaysDepth,
	AlwaysStencilFunc: AlwaysStencilFunc,
	AmbientLight: AmbientLight,
	AmbientLightProbe: AmbientLightProbe,
	AnimationClip: AnimationClip,
	AnimationLoader: AnimationLoader,
	AnimationMixer: AnimationMixer,
	AnimationObjectGroup: AnimationObjectGroup,
	AnimationUtils: AnimationUtils,
	ArcCurve: ArcCurve,
	ArrayCamera: ArrayCamera,
	ArrowHelper: ArrowHelper,
	Audio: Audio,
	AudioAnalyser: AudioAnalyser,
	AudioContext: AudioContext,
	AudioListener: AudioListener,
	AudioLoader: AudioLoader,
	AxesHelper: AxesHelper,
	AxisHelper: AxisHelper,
	BackSide: BackSide,
	BasicDepthPacking: BasicDepthPacking,
	BasicShadowMap: BasicShadowMap,
	BinaryTextureLoader: BinaryTextureLoader,
	Bone: Bone,
	BooleanKeyframeTrack: BooleanKeyframeTrack,
	BoundingBoxHelper: BoundingBoxHelper,
	Box2: Box2,
	Box3: Box3,
	Box3Helper: Box3Helper,
	BoxBufferGeometry: BoxBufferGeometry,
	BoxGeometry: BoxGeometry,
	BoxHelper: BoxHelper,
	BufferAttribute: BufferAttribute,
	BufferGeometry: BufferGeometry,
	BufferGeometryLoader: BufferGeometryLoader,
	ByteType: ByteType,
	Cache: Cache,
	Camera: Camera,
	CameraHelper: CameraHelper,
	CanvasRenderer: CanvasRenderer,
	CanvasTexture: CanvasTexture,
	CatmullRomCurve3: CatmullRomCurve3,
	CineonToneMapping: CineonToneMapping,
	CircleBufferGeometry: CircleBufferGeometry,
	CircleGeometry: CircleGeometry,
	ClampToEdgeWrapping: ClampToEdgeWrapping,
	Clock: Clock,
	ClosedSplineCurve3: ClosedSplineCurve3,
	Color: Color,
	ColorKeyframeTrack: ColorKeyframeTrack,
	CompressedTexture: CompressedTexture,
	CompressedTextureLoader: CompressedTextureLoader,
	ConeBufferGeometry: ConeBufferGeometry,
	ConeGeometry: ConeGeometry,
	CubeCamera: CubeCamera,
	CubeGeometry: BoxGeometry,
	CubeReflectionMapping: CubeReflectionMapping,
	CubeRefractionMapping: CubeRefractionMapping,
	CubeTexture: CubeTexture,
	CubeTextureLoader: CubeTextureLoader,
	CubeUVReflectionMapping: CubeUVReflectionMapping,
	CubeUVRefractionMapping: CubeUVRefractionMapping,
	CubicBezierCurve: CubicBezierCurve,
	CubicBezierCurve3: CubicBezierCurve3,
	CubicInterpolant: CubicInterpolant,
	CullFaceBack: CullFaceBack,
	CullFaceFront: CullFaceFront,
	CullFaceFrontBack: CullFaceFrontBack,
	CullFaceNone: CullFaceNone,
	Curve: Curve,
	CurvePath: CurvePath,
	CustomBlending: CustomBlending,
	CustomToneMapping: CustomToneMapping,
	CylinderBufferGeometry: CylinderBufferGeometry,
	CylinderGeometry: CylinderGeometry,
	Cylindrical: Cylindrical,
	DataTexture: DataTexture,
	DataTexture2DArray: DataTexture2DArray,
	DataTexture3D: DataTexture3D,
	DataTextureLoader: DataTextureLoader,
	DecrementStencilOp: DecrementStencilOp,
	DecrementWrapStencilOp: DecrementWrapStencilOp,
	DefaultLoadingManager: DefaultLoadingManager,
	DepthFormat: DepthFormat,
	DepthStencilFormat: DepthStencilFormat,
	DepthTexture: DepthTexture,
	DirectionalLight: DirectionalLight,
	DirectionalLightHelper: DirectionalLightHelper,
	DiscreteInterpolant: DiscreteInterpolant,
	DodecahedronBufferGeometry: DodecahedronBufferGeometry,
	DodecahedronGeometry: DodecahedronGeometry,
	DoubleSide: DoubleSide,
	DstAlphaFactor: DstAlphaFactor,
	DstColorFactor: DstColorFactor,
	DynamicBufferAttribute: DynamicBufferAttribute,
	DynamicCopyUsage: DynamicCopyUsage,
	DynamicDrawUsage: DynamicDrawUsage,
	DynamicReadUsage: DynamicReadUsage,
	EdgesGeometry: EdgesGeometry,
	EdgesHelper: EdgesHelper,
	EllipseCurve: EllipseCurve,
	EqualDepth: EqualDepth,
	EqualStencilFunc: EqualStencilFunc,
	EquirectangularReflectionMapping: EquirectangularReflectionMapping,
	EquirectangularRefractionMapping: EquirectangularRefractionMapping,
	Euler: Euler,
	EventDispatcher: EventDispatcher,
	ExtrudeBufferGeometry: ExtrudeBufferGeometry,
	ExtrudeGeometry: ExtrudeGeometry,
	Face3: Face3,
	Face4: Face4,
	FaceColors: FaceColors,
	FileLoader: FileLoader,
	FlatShading: FlatShading,
	Float32Attribute: Float32Attribute,
	Float32BufferAttribute: Float32BufferAttribute,
	Float64Attribute: Float64Attribute,
	Float64BufferAttribute: Float64BufferAttribute,
	FloatType: FloatType,
	Fog: Fog,
	FogExp2: FogExp2,
	Font: Font,
	FontLoader: FontLoader,
	FrontSide: FrontSide,
	Frustum: Frustum,
	GLBufferAttribute: GLBufferAttribute,
	GLSL1: GLSL1,
	GLSL3: GLSL3,
	GammaEncoding: GammaEncoding,
	Geometry: Geometry,
	GeometryUtils: GeometryUtils,
	GreaterDepth: GreaterDepth,
	GreaterEqualDepth: GreaterEqualDepth,
	GreaterEqualStencilFunc: GreaterEqualStencilFunc,
	GreaterStencilFunc: GreaterStencilFunc,
	GridHelper: GridHelper,
	Group: Group,
	HalfFloatType: HalfFloatType,
	HemisphereLight: HemisphereLight,
	HemisphereLightHelper: HemisphereLightHelper,
	HemisphereLightProbe: HemisphereLightProbe,
	IcosahedronBufferGeometry: IcosahedronBufferGeometry,
	IcosahedronGeometry: IcosahedronGeometry,
	ImageBitmapLoader: ImageBitmapLoader,
	ImageLoader: ImageLoader,
	ImageUtils: ImageUtils,
	ImmediateRenderObject: ImmediateRenderObject,
	IncrementStencilOp: IncrementStencilOp,
	IncrementWrapStencilOp: IncrementWrapStencilOp,
	InstancedBufferAttribute: InstancedBufferAttribute,
	InstancedBufferGeometry: InstancedBufferGeometry,
	InstancedInterleavedBuffer: InstancedInterleavedBuffer,
	InstancedMesh: InstancedMesh,
	Int16Attribute: Int16Attribute,
	Int16BufferAttribute: Int16BufferAttribute,
	Int32Attribute: Int32Attribute,
	Int32BufferAttribute: Int32BufferAttribute,
	Int8Attribute: Int8Attribute,
	Int8BufferAttribute: Int8BufferAttribute,
	IntType: IntType,
	InterleavedBuffer: InterleavedBuffer,
	InterleavedBufferAttribute: InterleavedBufferAttribute,
	Interpolant: Interpolant,
	InterpolateDiscrete: InterpolateDiscrete,
	InterpolateLinear: InterpolateLinear,
	InterpolateSmooth: InterpolateSmooth,
	InvertStencilOp: InvertStencilOp,
	JSONLoader: JSONLoader,
	KeepStencilOp: KeepStencilOp,
	KeyframeTrack: KeyframeTrack,
	LOD: LOD,
	LatheBufferGeometry: LatheBufferGeometry,
	LatheGeometry: LatheGeometry,
	Layers: Layers,
	LensFlare: LensFlare,
	LessDepth: LessDepth,
	LessEqualDepth: LessEqualDepth,
	LessEqualStencilFunc: LessEqualStencilFunc,
	LessStencilFunc: LessStencilFunc,
	Light: Light,
	LightProbe: LightProbe,
	LightShadow: LightShadow,
	Line: Line,
	Line3: Line3,
	LineBasicMaterial: LineBasicMaterial,
	LineCurve: LineCurve,
	LineCurve3: LineCurve3,
	LineDashedMaterial: LineDashedMaterial,
	LineLoop: LineLoop,
	LinePieces: LinePieces,
	LineSegments: LineSegments,
	LineStrip: LineStrip,
	LinearEncoding: LinearEncoding,
	LinearFilter: LinearFilter,
	LinearInterpolant: LinearInterpolant,
	LinearMipMapLinearFilter: LinearMipMapLinearFilter,
	LinearMipMapNearestFilter: LinearMipMapNearestFilter,
	LinearMipmapLinearFilter: LinearMipmapLinearFilter,
	LinearMipmapNearestFilter: LinearMipmapNearestFilter,
	LinearToneMapping: LinearToneMapping,
	Loader: Loader,
	LoaderUtils: LoaderUtils,
	LoadingManager: LoadingManager,
	LogLuvEncoding: LogLuvEncoding,
	LoopOnce: LoopOnce,
	LoopPingPong: LoopPingPong,
	LoopRepeat: LoopRepeat,
	LuminanceAlphaFormat: LuminanceAlphaFormat,
	LuminanceFormat: LuminanceFormat,
	MOUSE: MOUSE,
	Material: Material,
	MaterialLoader: MaterialLoader,
	Math: MathUtils,
	MathUtils: MathUtils,
	Matrix3: Matrix3,
	Matrix4: Matrix4,
	MaxEquation: MaxEquation,
	Mesh: Mesh,
	MeshBasicMaterial: MeshBasicMaterial,
	MeshDepthMaterial: MeshDepthMaterial,
	MeshDistanceMaterial: MeshDistanceMaterial,
	MeshFaceMaterial: MeshFaceMaterial,
	MeshLambertMaterial: MeshLambertMaterial,
	MeshMatcapMaterial: MeshMatcapMaterial,
	MeshNormalMaterial: MeshNormalMaterial,
	MeshPhongMaterial: MeshPhongMaterial,
	MeshPhysicalMaterial: MeshPhysicalMaterial,
	MeshStandardMaterial: MeshStandardMaterial,
	MeshToonMaterial: MeshToonMaterial,
	MinEquation: MinEquation,
	MirroredRepeatWrapping: MirroredRepeatWrapping,
	MixOperation: MixOperation,
	MultiMaterial: MultiMaterial,
	MultiplyBlending: MultiplyBlending,
	MultiplyOperation: MultiplyOperation,
	NearestFilter: NearestFilter,
	NearestMipMapLinearFilter: NearestMipMapLinearFilter,
	NearestMipMapNearestFilter: NearestMipMapNearestFilter,
	NearestMipmapLinearFilter: NearestMipmapLinearFilter,
	NearestMipmapNearestFilter: NearestMipmapNearestFilter,
	NeverDepth: NeverDepth,
	NeverStencilFunc: NeverStencilFunc,
	NoBlending: NoBlending,
	NoColors: NoColors,
	NoToneMapping: NoToneMapping,
	NormalAnimationBlendMode: NormalAnimationBlendMode,
	NormalBlending: NormalBlending,
	NotEqualDepth: NotEqualDepth,
	NotEqualStencilFunc: NotEqualStencilFunc,
	NumberKeyframeTrack: NumberKeyframeTrack,
	Object3D: Object3D,
	ObjectLoader: ObjectLoader,
	ObjectSpaceNormalMap: ObjectSpaceNormalMap,
	OctahedronBufferGeometry: OctahedronBufferGeometry,
	OctahedronGeometry: OctahedronGeometry,
	OneFactor: OneFactor,
	OneMinusDstAlphaFactor: OneMinusDstAlphaFactor,
	OneMinusDstColorFactor: OneMinusDstColorFactor,
	OneMinusSrcAlphaFactor: OneMinusSrcAlphaFactor,
	OneMinusSrcColorFactor: OneMinusSrcColorFactor,
	OrthographicCamera: OrthographicCamera,
	PCFShadowMap: PCFShadowMap,
	PCFSoftShadowMap: PCFSoftShadowMap,
	PMREMGenerator: PMREMGenerator,
	ParametricBufferGeometry: ParametricBufferGeometry,
	ParametricGeometry: ParametricGeometry,
	Particle: Particle,
	ParticleBasicMaterial: ParticleBasicMaterial,
	ParticleSystem: ParticleSystem,
	ParticleSystemMaterial: ParticleSystemMaterial,
	Path: Path,
	PerspectiveCamera: PerspectiveCamera,
	Plane: Plane,
	PlaneBufferGeometry: PlaneBufferGeometry,
	PlaneGeometry: PlaneGeometry,
	PlaneHelper: PlaneHelper,
	PointCloud: PointCloud,
	PointCloudMaterial: PointCloudMaterial,
	PointLight: PointLight,
	PointLightHelper: PointLightHelper,
	Points: Points,
	PointsMaterial: PointsMaterial,
	PolarGridHelper: PolarGridHelper,
	PolyhedronBufferGeometry: PolyhedronBufferGeometry,
	PolyhedronGeometry: PolyhedronGeometry,
	PositionalAudio: PositionalAudio,
	PropertyBinding: PropertyBinding,
	PropertyMixer: PropertyMixer,
	QuadraticBezierCurve: QuadraticBezierCurve,
	QuadraticBezierCurve3: QuadraticBezierCurve3,
	Quaternion: Quaternion,
	QuaternionKeyframeTrack: QuaternionKeyframeTrack,
	QuaternionLinearInterpolant: QuaternionLinearInterpolant,
	REVISION: REVISION,
	RGBADepthPacking: RGBADepthPacking,
	RGBAFormat: RGBAFormat,
	RGBAIntegerFormat: RGBAIntegerFormat,
	RGBA_ASTC_10x10_Format: RGBA_ASTC_10x10_Format,
	RGBA_ASTC_10x5_Format: RGBA_ASTC_10x5_Format,
	RGBA_ASTC_10x6_Format: RGBA_ASTC_10x6_Format,
	RGBA_ASTC_10x8_Format: RGBA_ASTC_10x8_Format,
	RGBA_ASTC_12x10_Format: RGBA_ASTC_12x10_Format,
	RGBA_ASTC_12x12_Format: RGBA_ASTC_12x12_Format,
	RGBA_ASTC_4x4_Format: RGBA_ASTC_4x4_Format,
	RGBA_ASTC_5x4_Format: RGBA_ASTC_5x4_Format,
	RGBA_ASTC_5x5_Format: RGBA_ASTC_5x5_Format,
	RGBA_ASTC_6x5_Format: RGBA_ASTC_6x5_Format,
	RGBA_ASTC_6x6_Format: RGBA_ASTC_6x6_Format,
	RGBA_ASTC_8x5_Format: RGBA_ASTC_8x5_Format,
	RGBA_ASTC_8x6_Format: RGBA_ASTC_8x6_Format,
	RGBA_ASTC_8x8_Format: RGBA_ASTC_8x8_Format,
	RGBA_BPTC_Format: RGBA_BPTC_Format,
	RGBA_ETC2_EAC_Format: RGBA_ETC2_EAC_Format,
	RGBA_PVRTC_2BPPV1_Format: RGBA_PVRTC_2BPPV1_Format,
	RGBA_PVRTC_4BPPV1_Format: RGBA_PVRTC_4BPPV1_Format,
	RGBA_S3TC_DXT1_Format: RGBA_S3TC_DXT1_Format,
	RGBA_S3TC_DXT3_Format: RGBA_S3TC_DXT3_Format,
	RGBA_S3TC_DXT5_Format: RGBA_S3TC_DXT5_Format,
	RGBDEncoding: RGBDEncoding,
	RGBEEncoding: RGBEEncoding,
	RGBEFormat: RGBEFormat,
	RGBFormat: RGBFormat,
	RGBIntegerFormat: RGBIntegerFormat,
	RGBM16Encoding: RGBM16Encoding,
	RGBM7Encoding: RGBM7Encoding,
	RGB_ETC1_Format: RGB_ETC1_Format,
	RGB_ETC2_Format: RGB_ETC2_Format,
	RGB_PVRTC_2BPPV1_Format: RGB_PVRTC_2BPPV1_Format,
	RGB_PVRTC_4BPPV1_Format: RGB_PVRTC_4BPPV1_Format,
	RGB_S3TC_DXT1_Format: RGB_S3TC_DXT1_Format,
	RGFormat: RGFormat,
	RGIntegerFormat: RGIntegerFormat,
	RawShaderMaterial: RawShaderMaterial,
	Ray: Ray,
	Raycaster: Raycaster,
	RectAreaLight: RectAreaLight,
	RedFormat: RedFormat,
	RedIntegerFormat: RedIntegerFormat,
	ReinhardToneMapping: ReinhardToneMapping,
	RepeatWrapping: RepeatWrapping,
	ReplaceStencilOp: ReplaceStencilOp,
	ReverseSubtractEquation: ReverseSubtractEquation,
	RingBufferGeometry: RingBufferGeometry,
	RingGeometry: RingGeometry,
	SRGB8_ALPHA8_ASTC_10x10_Format: SRGB8_ALPHA8_ASTC_10x10_Format,
	SRGB8_ALPHA8_ASTC_10x5_Format: SRGB8_ALPHA8_ASTC_10x5_Format,
	SRGB8_ALPHA8_ASTC_10x6_Format: SRGB8_ALPHA8_ASTC_10x6_Format,
	SRGB8_ALPHA8_ASTC_10x8_Format: SRGB8_ALPHA8_ASTC_10x8_Format,
	SRGB8_ALPHA8_ASTC_12x10_Format: SRGB8_ALPHA8_ASTC_12x10_Format,
	SRGB8_ALPHA8_ASTC_12x12_Format: SRGB8_ALPHA8_ASTC_12x12_Format,
	SRGB8_ALPHA8_ASTC_4x4_Format: SRGB8_ALPHA8_ASTC_4x4_Format,
	SRGB8_ALPHA8_ASTC_5x4_Format: SRGB8_ALPHA8_ASTC_5x4_Format,
	SRGB8_ALPHA8_ASTC_5x5_Format: SRGB8_ALPHA8_ASTC_5x5_Format,
	SRGB8_ALPHA8_ASTC_6x5_Format: SRGB8_ALPHA8_ASTC_6x5_Format,
	SRGB8_ALPHA8_ASTC_6x6_Format: SRGB8_ALPHA8_ASTC_6x6_Format,
	SRGB8_ALPHA8_ASTC_8x5_Format: SRGB8_ALPHA8_ASTC_8x5_Format,
	SRGB8_ALPHA8_ASTC_8x6_Format: SRGB8_ALPHA8_ASTC_8x6_Format,
	SRGB8_ALPHA8_ASTC_8x8_Format: SRGB8_ALPHA8_ASTC_8x8_Format,
	Scene: Scene,
	SceneUtils: SceneUtils,
	ShaderChunk: ShaderChunk,
	ShaderLib: ShaderLib,
	ShaderMaterial: ShaderMaterial,
	ShadowMaterial: ShadowMaterial,
	Shape: Shape,
	ShapeBufferGeometry: ShapeBufferGeometry,
	ShapeGeometry: ShapeGeometry,
	ShapePath: ShapePath,
	ShapeUtils: ShapeUtils,
	ShortType: ShortType,
	Skeleton: Skeleton,
	SkeletonHelper: SkeletonHelper,
	SkinnedMesh: SkinnedMesh,
	SmoothShading: SmoothShading,
	Sphere: Sphere,
	SphereBufferGeometry: SphereBufferGeometry,
	SphereGeometry: SphereGeometry,
	Spherical: Spherical,
	SphericalHarmonics3: SphericalHarmonics3,
	Spline: Spline,
	SplineCurve: SplineCurve,
	SplineCurve3: SplineCurve3,
	SpotLight: SpotLight,
	SpotLightHelper: SpotLightHelper,
	Sprite: Sprite,
	SpriteMaterial: SpriteMaterial,
	SrcAlphaFactor: SrcAlphaFactor,
	SrcAlphaSaturateFactor: SrcAlphaSaturateFactor,
	SrcColorFactor: SrcColorFactor,
	StaticCopyUsage: StaticCopyUsage,
	StaticDrawUsage: StaticDrawUsage,
	StaticReadUsage: StaticReadUsage,
	StereoCamera: StereoCamera,
	StreamCopyUsage: StreamCopyUsage,
	StreamDrawUsage: StreamDrawUsage,
	StreamReadUsage: StreamReadUsage,
	StringKeyframeTrack: StringKeyframeTrack,
	SubtractEquation: SubtractEquation,
	SubtractiveBlending: SubtractiveBlending,
	TOUCH: TOUCH,
	TangentSpaceNormalMap: TangentSpaceNormalMap,
	TetrahedronBufferGeometry: TetrahedronBufferGeometry,
	TetrahedronGeometry: TetrahedronGeometry,
	TextBufferGeometry: TextBufferGeometry,
	TextGeometry: TextGeometry,
	Texture: Texture,
	TextureLoader: TextureLoader,
	TorusBufferGeometry: TorusBufferGeometry,
	TorusGeometry: TorusGeometry,
	TorusKnotBufferGeometry: TorusKnotBufferGeometry,
	TorusKnotGeometry: TorusKnotGeometry,
	Triangle: Triangle,
	TriangleFanDrawMode: TriangleFanDrawMode,
	TriangleStripDrawMode: TriangleStripDrawMode,
	TrianglesDrawMode: TrianglesDrawMode,
	TubeBufferGeometry: TubeBufferGeometry,
	TubeGeometry: TubeGeometry,
	UVMapping: UVMapping,
	Uint16Attribute: Uint16Attribute,
	Uint16BufferAttribute: Uint16BufferAttribute,
	Uint32Attribute: Uint32Attribute,
	Uint32BufferAttribute: Uint32BufferAttribute,
	Uint8Attribute: Uint8Attribute,
	Uint8BufferAttribute: Uint8BufferAttribute,
	Uint8ClampedAttribute: Uint8ClampedAttribute,
	Uint8ClampedBufferAttribute: Uint8ClampedBufferAttribute,
	Uniform: Uniform,
	UniformsLib: UniformsLib,
	UniformsUtils: UniformsUtils,
	UnsignedByteType: UnsignedByteType,
	UnsignedInt248Type: UnsignedInt248Type,
	UnsignedIntType: UnsignedIntType,
	UnsignedShort4444Type: UnsignedShort4444Type,
	UnsignedShort5551Type: UnsignedShort5551Type,
	UnsignedShort565Type: UnsignedShort565Type,
	UnsignedShortType: UnsignedShortType,
	VSMShadowMap: VSMShadowMap,
	Vector2: Vector2,
	Vector3: Vector3,
	Vector4: Vector4,
	VectorKeyframeTrack: VectorKeyframeTrack,
	Vertex: Vertex,
	VertexColors: VertexColors,
	VideoTexture: VideoTexture,
	WebGL1Renderer: WebGL1Renderer,
	WebGLCubeRenderTarget: WebGLCubeRenderTarget,
	WebGLMultisampleRenderTarget: WebGLMultisampleRenderTarget,
	WebGLRenderTarget: WebGLRenderTarget,
	WebGLRenderTargetCube: WebGLRenderTargetCube,
	WebGLRenderer: WebGLRenderer,
	WebGLUtils: WebGLUtils,
	WireframeGeometry: WireframeGeometry,
	WireframeHelper: WireframeHelper,
	WrapAroundEnding: WrapAroundEnding,
	XHRLoader: XHRLoader,
	ZeroCurvatureEnding: ZeroCurvatureEnding,
	ZeroFactor: ZeroFactor,
	ZeroSlopeEnding: ZeroSlopeEnding,
	ZeroStencilOp: ZeroStencilOp,
	sRGBEncoding: sRGBEncoding
});

var OrbitControls = function ( object, domElement ) {
	if ( domElement === undefined ) console.warn( 'THREE.OrbitControls: The second parameter "domElement" is now mandatory.' );
	if ( domElement === document ) console.error( 'THREE.OrbitControls: "document" should not be used as the target "domElement". Please use "renderer.domElement" instead.' );
	this.object = object;
	this.domElement = domElement;
	this.enabled = true;
	this.target = new Vector3();
	this.minDistance = 0;
	this.maxDistance = Infinity;
	this.minZoom = 0;
	this.maxZoom = Infinity;
	this.minPolarAngle = 0;
	this.maxPolarAngle = Math.PI;
	this.minAzimuthAngle = - Infinity;
	this.maxAzimuthAngle = Infinity;
	this.enableDamping = false;
	this.dampingFactor = 0.05;
	this.enableZoom = true;
	this.zoomSpeed = 1.0;
	this.enableRotate = true;
	this.rotateSpeed = 1.0;
	this.enablePan = true;
	this.panSpeed = 1.0;
	this.screenSpacePanning = true;
	this.keyPanSpeed = 7.0;
	this.autoRotate = false;
	this.autoRotateSpeed = 2.0;
	this.enableKeys = true;
	this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };
	this.mouseButtons = { LEFT: MOUSE.ROTATE, MIDDLE: MOUSE.DOLLY, RIGHT: MOUSE.PAN };
	this.touches = { ONE: TOUCH.ROTATE, TWO: TOUCH.DOLLY_PAN };
	this.target0 = this.target.clone();
	this.position0 = this.object.position.clone();
	this.zoom0 = this.object.zoom;
	this.getPolarAngle = function () {
		return spherical.phi;
	};
	this.getAzimuthalAngle = function () {
		return spherical.theta;
	};
	this.saveState = function () {
		scope.target0.copy( scope.target );
		scope.position0.copy( scope.object.position );
		scope.zoom0 = scope.object.zoom;
	};
	this.reset = function () {
		scope.target.copy( scope.target0 );
		scope.object.position.copy( scope.position0 );
		scope.object.zoom = scope.zoom0;
		scope.object.updateProjectionMatrix();
		scope.dispatchEvent( changeEvent );
		scope.update();
		state = STATE.NONE;
	};
	this.update = function () {
		var offset = new Vector3();
		var quat = new Quaternion().setFromUnitVectors( object.up, new Vector3( 0, 1, 0 ) );
		var quatInverse = quat.clone().inverse();
		var lastPosition = new Vector3();
		var lastQuaternion = new Quaternion();
		var twoPI = 2 * Math.PI;
		return function update() {
			var position = scope.object.position;
			offset.copy( position ).sub( scope.target );
			offset.applyQuaternion( quat );
			spherical.setFromVector3( offset );
			if ( scope.autoRotate && state === STATE.NONE ) {
				rotateLeft( getAutoRotationAngle() );
			}
			if ( scope.enableDamping ) {
				spherical.theta += sphericalDelta.theta * scope.dampingFactor;
				spherical.phi += sphericalDelta.phi * scope.dampingFactor;
			} else {
				spherical.theta += sphericalDelta.theta;
				spherical.phi += sphericalDelta.phi;
			}
			var min = scope.minAzimuthAngle;
			var max = scope.maxAzimuthAngle;
			if ( isFinite( min ) && isFinite( max ) ) {
				if ( min < - Math.PI ) min += twoPI; else if ( min > Math.PI ) min -= twoPI;
				if ( max < - Math.PI ) max += twoPI; else if ( max > Math.PI ) max -= twoPI;
				if ( min < max ) {
					spherical.theta = Math.max( min, Math.min( max, spherical.theta ) );
				} else {
					spherical.theta = ( spherical.theta > ( min + max ) / 2 ) ?
						Math.max( min, spherical.theta ) :
						Math.min( max, spherical.theta );
				}
			}
			spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );
			spherical.makeSafe();
			spherical.radius *= scale;
			spherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );
			if ( scope.enableDamping === true ) {
				scope.target.addScaledVector( panOffset, scope.dampingFactor );
			} else {
				scope.target.add( panOffset );
			}
			offset.setFromSpherical( spherical );
			offset.applyQuaternion( quatInverse );
			position.copy( scope.target ).add( offset );
			scope.object.lookAt( scope.target );
			if ( scope.enableDamping === true ) {
				sphericalDelta.theta *= ( 1 - scope.dampingFactor );
				sphericalDelta.phi *= ( 1 - scope.dampingFactor );
				panOffset.multiplyScalar( 1 - scope.dampingFactor );
			} else {
				sphericalDelta.set( 0, 0, 0 );
				panOffset.set( 0, 0, 0 );
			}
			scale = 1;
			if ( zoomChanged ||
				lastPosition.distanceToSquared( scope.object.position ) > EPS ||
				8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {
				scope.dispatchEvent( changeEvent );
				lastPosition.copy( scope.object.position );
				lastQuaternion.copy( scope.object.quaternion );
				zoomChanged = false;
				return true;
			}
			return false;
		};
	}();
	this.dispose = function () {
		scope.domElement.removeEventListener( 'contextmenu', onContextMenu, false );
		scope.domElement.removeEventListener( 'pointerdown', onPointerDown, false );
		scope.domElement.removeEventListener( 'wheel', onMouseWheel, false );
		scope.domElement.removeEventListener( 'touchstart', onTouchStart, false );
		scope.domElement.removeEventListener( 'touchend', onTouchEnd, false );
		scope.domElement.removeEventListener( 'touchmove', onTouchMove, false );
		scope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );
		scope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp, false );
		scope.domElement.removeEventListener( 'keydown', onKeyDown, false );
	};
	var scope = this;
	var changeEvent = { type: 'change' };
	var startEvent = { type: 'start' };
	var endEvent = { type: 'end' };
	var STATE = {
		NONE: - 1,
		ROTATE: 0,
		DOLLY: 1,
		PAN: 2,
		TOUCH_ROTATE: 3,
		TOUCH_PAN: 4,
		TOUCH_DOLLY_PAN: 5,
		TOUCH_DOLLY_ROTATE: 6
	};
	var state = STATE.NONE;
	var EPS = 0.000001;
	var spherical = new Spherical();
	var sphericalDelta = new Spherical();
	var scale = 1;
	var panOffset = new Vector3();
	var zoomChanged = false;
	var rotateStart = new Vector2();
	var rotateEnd = new Vector2();
	var rotateDelta = new Vector2();
	var panStart = new Vector2();
	var panEnd = new Vector2();
	var panDelta = new Vector2();
	var dollyStart = new Vector2();
	var dollyEnd = new Vector2();
	var dollyDelta = new Vector2();
	function getAutoRotationAngle() {
		return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;
	}
	function getZoomScale() {
		return Math.pow( 0.95, scope.zoomSpeed );
	}
	function rotateLeft( angle ) {
		sphericalDelta.theta -= angle;
	}
	function rotateUp( angle ) {
		sphericalDelta.phi -= angle;
	}
	var panLeft = function () {
		var v = new Vector3();
		return function panLeft( distance, objectMatrix ) {
			v.setFromMatrixColumn( objectMatrix, 0 );
			v.multiplyScalar( - distance );
			panOffset.add( v );
		};
	}();
	var panUp = function () {
		var v = new Vector3();
		return function panUp( distance, objectMatrix ) {
			if ( scope.screenSpacePanning === true ) {
				v.setFromMatrixColumn( objectMatrix, 1 );
			} else {
				v.setFromMatrixColumn( objectMatrix, 0 );
				v.crossVectors( scope.object.up, v );
			}
			v.multiplyScalar( distance );
			panOffset.add( v );
		};
	}();
	var pan = function () {
		var offset = new Vector3();
		return function pan( deltaX, deltaY ) {
			var element = scope.domElement;
			if ( scope.object.isPerspectiveCamera ) {
				var position = scope.object.position;
				offset.copy( position ).sub( scope.target );
				var targetDistance = offset.length();
				targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );
				panLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );
				panUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );
			} else if ( scope.object.isOrthographicCamera ) {
				panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );
				panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );
			} else {
				console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
				scope.enablePan = false;
			}
		};
	}();
	function dollyOut( dollyScale ) {
		if ( scope.object.isPerspectiveCamera ) {
			scale /= dollyScale;
		} else if ( scope.object.isOrthographicCamera ) {
			scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) );
			scope.object.updateProjectionMatrix();
			zoomChanged = true;
		} else {
			console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
			scope.enableZoom = false;
		}
	}
	function dollyIn( dollyScale ) {
		if ( scope.object.isPerspectiveCamera ) {
			scale *= dollyScale;
		} else if ( scope.object.isOrthographicCamera ) {
			scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) );
			scope.object.updateProjectionMatrix();
			zoomChanged = true;
		} else {
			console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
			scope.enableZoom = false;
		}
	}
	function handleMouseDownRotate( event ) {
		rotateStart.set( event.clientX, event.clientY );
	}
	function handleMouseDownDolly( event ) {
		dollyStart.set( event.clientX, event.clientY );
	}
	function handleMouseDownPan( event ) {
		panStart.set( event.clientX, event.clientY );
	}
	function handleMouseMoveRotate( event ) {
		rotateEnd.set( event.clientX, event.clientY );
		rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );
		var element = scope.domElement;
		rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight );
		rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );
		rotateStart.copy( rotateEnd );
		scope.update();
	}
	function handleMouseMoveDolly( event ) {
		dollyEnd.set( event.clientX, event.clientY );
		dollyDelta.subVectors( dollyEnd, dollyStart );
		if ( dollyDelta.y > 0 ) {
			dollyOut( getZoomScale() );
		} else if ( dollyDelta.y < 0 ) {
			dollyIn( getZoomScale() );
		}
		dollyStart.copy( dollyEnd );
		scope.update();
	}
	function handleMouseMovePan( event ) {
		panEnd.set( event.clientX, event.clientY );
		panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );
		pan( panDelta.x, panDelta.y );
		panStart.copy( panEnd );
		scope.update();
	}
	function handleMouseWheel( event ) {
		if ( event.deltaY < 0 ) {
			dollyIn( getZoomScale() );
		} else if ( event.deltaY > 0 ) {
			dollyOut( getZoomScale() );
		}
		scope.update();
	}
	function handleKeyDown( event ) {
		var needsUpdate = false;
		switch ( event.keyCode ) {
			case scope.keys.UP:
				pan( 0, scope.keyPanSpeed );
				needsUpdate = true;
				break;
			case scope.keys.BOTTOM:
				pan( 0, - scope.keyPanSpeed );
				needsUpdate = true;
				break;
			case scope.keys.LEFT:
				pan( scope.keyPanSpeed, 0 );
				needsUpdate = true;
				break;
			case scope.keys.RIGHT:
				pan( - scope.keyPanSpeed, 0 );
				needsUpdate = true;
				break;
		}
		if ( needsUpdate ) {
			event.preventDefault();
			scope.update();
		}
	}
	function handleTouchStartRotate( event ) {
		if ( event.touches.length == 1 ) {
			rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
		} else {
			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
			rotateStart.set( x, y );
		}
	}
	function handleTouchStartPan( event ) {
		if ( event.touches.length == 1 ) {
			panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
		} else {
			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
			panStart.set( x, y );
		}
	}
	function handleTouchStartDolly( event ) {
		var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
		var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
		var distance = Math.sqrt( dx * dx + dy * dy );
		dollyStart.set( 0, distance );
	}
	function handleTouchStartDollyPan( event ) {
		if ( scope.enableZoom ) handleTouchStartDolly( event );
		if ( scope.enablePan ) handleTouchStartPan( event );
	}
	function handleTouchStartDollyRotate( event ) {
		if ( scope.enableZoom ) handleTouchStartDolly( event );
		if ( scope.enableRotate ) handleTouchStartRotate( event );
	}
	function handleTouchMoveRotate( event ) {
		if ( event.touches.length == 1 ) {
			rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
		} else {
			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
			rotateEnd.set( x, y );
		}
		rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );
		var element = scope.domElement;
		rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight );
		rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );
		rotateStart.copy( rotateEnd );
	}
	function handleTouchMovePan( event ) {
		if ( event.touches.length == 1 ) {
			panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
		} else {
			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
			panEnd.set( x, y );
		}
		panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );
		pan( panDelta.x, panDelta.y );
		panStart.copy( panEnd );
	}
	function handleTouchMoveDolly( event ) {
		var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
		var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
		var distance = Math.sqrt( dx * dx + dy * dy );
		dollyEnd.set( 0, distance );
		dollyDelta.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) );
		dollyOut( dollyDelta.y );
		dollyStart.copy( dollyEnd );
	}
	function handleTouchMoveDollyPan( event ) {
		if ( scope.enableZoom ) handleTouchMoveDolly( event );
		if ( scope.enablePan ) handleTouchMovePan( event );
	}
	function handleTouchMoveDollyRotate( event ) {
		if ( scope.enableZoom ) handleTouchMoveDolly( event );
		if ( scope.enableRotate ) handleTouchMoveRotate( event );
	}
	function onPointerDown( event ) {
		if ( scope.enabled === false ) return;
		switch ( event.pointerType ) {
			case 'mouse':
				onMouseDown( event );
				break;
		}
	}
	function onPointerMove( event ) {
		if ( scope.enabled === false ) return;
		switch ( event.pointerType ) {
			case 'mouse':
				onMouseMove( event );
				break;
		}
	}
	function onPointerUp( event ) {
		if ( scope.enabled === false ) return;
		switch ( event.pointerType ) {
			case 'mouse':
				onMouseUp();
				break;
		}
	}
	function onMouseDown( event ) {
		event.preventDefault();
		scope.domElement.focus ? scope.domElement.focus() : window.focus();
		var mouseAction;
		switch ( event.button ) {
			case 0:
				mouseAction = scope.mouseButtons.LEFT;
				break;
			case 1:
				mouseAction = scope.mouseButtons.MIDDLE;
				break;
			case 2:
				mouseAction = scope.mouseButtons.RIGHT;
				break;
			default:
				mouseAction = - 1;
		}
		switch ( mouseAction ) {
			case MOUSE.DOLLY:
				if ( scope.enableZoom === false ) return;
				handleMouseDownDolly( event );
				state = STATE.DOLLY;
				break;
			case MOUSE.ROTATE:
				if ( event.ctrlKey || event.metaKey || event.shiftKey ) {
					if ( scope.enablePan === false ) return;
					handleMouseDownPan( event );
					state = STATE.PAN;
				} else {
					if ( scope.enableRotate === false ) return;
					handleMouseDownRotate( event );
					state = STATE.ROTATE;
				}
				break;
			case MOUSE.PAN:
				if ( event.ctrlKey || event.metaKey || event.shiftKey ) {
					if ( scope.enableRotate === false ) return;
					handleMouseDownRotate( event );
					state = STATE.ROTATE;
				} else {
					if ( scope.enablePan === false ) return;
					handleMouseDownPan( event );
					state = STATE.PAN;
				}
				break;
			default:
				state = STATE.NONE;
		}
		if ( state !== STATE.NONE ) {
			scope.domElement.ownerDocument.addEventListener( 'pointermove', onPointerMove, false );
			scope.domElement.ownerDocument.addEventListener( 'pointerup', onPointerUp, false );
			scope.dispatchEvent( startEvent );
		}
	}
	function onMouseMove( event ) {
		if ( scope.enabled === false ) return;
		event.preventDefault();
		switch ( state ) {
			case STATE.ROTATE:
				if ( scope.enableRotate === false ) return;
				handleMouseMoveRotate( event );
				break;
			case STATE.DOLLY:
				if ( scope.enableZoom === false ) return;
				handleMouseMoveDolly( event );
				break;
			case STATE.PAN:
				if ( scope.enablePan === false ) return;
				handleMouseMovePan( event );
				break;
		}
	}
	function onMouseUp( event ) {
		if ( scope.enabled === false ) return;
		scope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );
		scope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp, false );
		scope.dispatchEvent( endEvent );
		state = STATE.NONE;
	}
	function onMouseWheel( event ) {
		if ( scope.enabled === false || scope.enableZoom === false || ( state !== STATE.NONE && state !== STATE.ROTATE ) ) return;
		event.preventDefault();
		event.stopPropagation();
		scope.dispatchEvent( startEvent );
		handleMouseWheel( event );
		scope.dispatchEvent( endEvent );
	}
	function onKeyDown( event ) {
		if ( scope.enabled === false || scope.enableKeys === false || scope.enablePan === false ) return;
		handleKeyDown( event );
	}
	function onTouchStart( event ) {
		if ( scope.enabled === false ) return;
		event.preventDefault();
		switch ( event.touches.length ) {
			case 1:
				switch ( scope.touches.ONE ) {
					case TOUCH.ROTATE:
						if ( scope.enableRotate === false ) return;
						handleTouchStartRotate( event );
						state = STATE.TOUCH_ROTATE;
						break;
					case TOUCH.PAN:
						if ( scope.enablePan === false ) return;
						handleTouchStartPan( event );
						state = STATE.TOUCH_PAN;
						break;
					default:
						state = STATE.NONE;
				}
				break;
			case 2:
				switch ( scope.touches.TWO ) {
					case TOUCH.DOLLY_PAN:
						if ( scope.enableZoom === false && scope.enablePan === false ) return;
						handleTouchStartDollyPan( event );
						state = STATE.TOUCH_DOLLY_PAN;
						break;
					case TOUCH.DOLLY_ROTATE:
						if ( scope.enableZoom === false && scope.enableRotate === false ) return;
						handleTouchStartDollyRotate( event );
						state = STATE.TOUCH_DOLLY_ROTATE;
						break;
					default:
						state = STATE.NONE;
				}
				break;
			default:
				state = STATE.NONE;
		}
		if ( state !== STATE.NONE ) {
			scope.dispatchEvent( startEvent );
		}
	}
	function onTouchMove( event ) {
		if ( scope.enabled === false ) return;
		event.preventDefault();
		event.stopPropagation();
		switch ( state ) {
			case STATE.TOUCH_ROTATE:
				if ( scope.enableRotate === false ) return;
				handleTouchMoveRotate( event );
				scope.update();
				break;
			case STATE.TOUCH_PAN:
				if ( scope.enablePan === false ) return;
				handleTouchMovePan( event );
				scope.update();
				break;
			case STATE.TOUCH_DOLLY_PAN:
				if ( scope.enableZoom === false && scope.enablePan === false ) return;
				handleTouchMoveDollyPan( event );
				scope.update();
				break;
			case STATE.TOUCH_DOLLY_ROTATE:
				if ( scope.enableZoom === false && scope.enableRotate === false ) return;
				handleTouchMoveDollyRotate( event );
				scope.update();
				break;
			default:
				state = STATE.NONE;
		}
	}
	function onTouchEnd( event ) {
		if ( scope.enabled === false ) return;
		scope.dispatchEvent( endEvent );
		state = STATE.NONE;
	}
	function onContextMenu( event ) {
		if ( scope.enabled === false ) return;
		event.preventDefault();
	}
	scope.domElement.addEventListener( 'contextmenu', onContextMenu, false );
	scope.domElement.addEventListener( 'pointerdown', onPointerDown, false );
	scope.domElement.addEventListener( 'wheel', onMouseWheel, false );
	scope.domElement.addEventListener( 'touchstart', onTouchStart, false );
	scope.domElement.addEventListener( 'touchend', onTouchEnd, false );
	scope.domElement.addEventListener( 'touchmove', onTouchMove, false );
	scope.domElement.addEventListener( 'keydown', onKeyDown, false );
	if ( scope.domElement.tabIndex === - 1 ) {
		scope.domElement.tabIndex = 0;
	}
	this.update();
};
OrbitControls.prototype = Object.create( EventDispatcher.prototype );
OrbitControls.prototype.constructor = OrbitControls;
var MapControls = function ( object, domElement ) {
	OrbitControls.call( this, object, domElement );
	this.screenSpacePanning = false;
	this.mouseButtons.LEFT = MOUSE.PAN;
	this.mouseButtons.RIGHT = MOUSE.ROTATE;
	this.touches.ONE = TOUCH.PAN;
	this.touches.TWO = TOUCH.DOLLY_ROTATE;
};
MapControls.prototype = Object.create( EventDispatcher.prototype );
MapControls.prototype.constructor = MapControls;

export { OrbitControls, three_module as THREE };
