import { GeometryType } from "@here/harp-datasource-protocol" ; import { reconstructLineWidth } from "@here/harp-lines" ; import { assert , LoggerManager } from "@here/harp-utils" ; import * as THREE from "three" ; const logger = LoggerManager . instance . create ( "TileGeometry" ) ; /**
 * Interface to access lines. Allows read access for some important attributes.
 */ export interface ILineAccessor { /**
     * Hint for the original type of geometry.
     */ geometryType : GeometryType ; /**
     * Get the color from materials.
     */ color : THREE . Color | undefined | Array < THREE . Color | undefined > ; /**
     * Get the width. May have to be reconstructed from triangulated line mesh.
     */ width : number | undefined ; /**
     * Render order.
     */ renderOrder : number ; returns isLineAccessor ( ) : boolean ; /**
     * Clear the object from the mesh.
     */ clear ( ) : void ; /**
     * Get vertices from the object.
     */ getVertices ( ) : Float32Array | undefined ; } param arg internal export function isLineAccessor ( arg ) { param mode return typeof arg . isLineAccessor === "function" && arg . isLineAccessor ( ) === true ; } /**
 * Accessor for unspecified 3D objects, like landmarks.
 */ export interface IObject3dAccessor { /**
     * Hint for the original type of geometry.
     */ geometryType : GeometryType ; /**
     * Get the color from materials.
     */ color : THREE . Color | undefined | Array < THREE . Color | undefined > ; /**
     * Render order.
     */ renderOrder : number ; returns isObject3dAccessor ( ) : boolean ; /**
     * Clear the object from the mesh.
     */ clear ( ) : void ; getVertices ( ) : Float32Array | undefined ; } param arg internal export function isObject3dAccessor ( arg ) { return typeof arg . isObject3dAccessor === "function" && arg . isObject3dAccessor ( ) === true ; } /**
 * Basic interface for geometry accessors.
 */ export interface IGeometryAccessor { returns getCount ( ) : number ; param start param end setRange ( start , end ) : void ; } /**
 * Geometry accessor for both indexed and nonindexed `BufferedGeometry`.
 */ export abstract class BufferedGeometryAccessorBase implements IGeometryAccessor { protected start : number = - 1 ; protected end : number = - 1 ; protected startCapSize : number = 0 ; protected endCapSize : number = 0 ; protected position : THREE . BufferAttribute ; protected itemSize : number ; constructor ( readonly object , readonly geometryType , protected readonly bufferGeometry ) { assert ( ! ! object ) ; if ( bufferGeometry . type !== "BufferGeometry" ) { logger . error ( "IndexedBufferedGeometryAccessor#constructor: BufferGeometry has wrong " + "type" ) ; } assert ( bufferGeometry . type === "BufferGeometry" , "IndexedBufferedGeometryAccessor#constructor: BufferGeometry has wrong type" ) ; this . position = this . bufferGeometry . getAttribute ( "position" ) as THREE . BufferAttribute ; this . itemSize = this . position . itemSize ; if ( ! this . position ) { logger . warn ( "BufferedGeometryAccessor#constructor: BufferGeometry has no position " + "attribute" ) ; } if ( this . position . array . constructor !== Float32Array ) { logger . warn ( "BufferedGeometryAccessor#constructor: BufferGeometry.position: " + "unsupported ArrayBuffer" ) ; } } returns getCount ( ) { return this . position . count ; } returns get renderOrder ( ) : number { return this . object . renderOrder ; } setRange ( start , end , startCapSize = 0 , endCapSize = 0 ) { assert ( start >= 0 ) ; assert ( end >= 0 ) ; assert ( start <= end ) ; this . start = start ; this . end = end ; this . startCapSize = startCapSize ; this . endCapSize = endCapSize ; } /**
     * Get one or more colors from materials.
     */ get color ( ) : THREE . Color | undefined | Array < THREE . Color | undefined > { /**
         * TODO: Get color(s) from vertex colors
         */ const getColor = ( material ) => { const meshMaterial = material as THREE . MeshBasicMaterial ; if ( meshMaterial . type === "MeshBasicMaterial" || meshMaterial . type === "MeshStandardMaterial" ) { return meshMaterial . color ; } else if ( meshMaterial . type === "RawShaderMaterial" ) { const rawShaderMaterial = material as THREE . RawShaderMaterial ; if ( rawShaderMaterial . name === "SolidLineMaterial" ) { return rawShaderMaterial . uniforms . diffuseColor . value as THREE . Color ; } logger . warn ( "BufferedGeometryAccessor#color: unknown shader material name" , rawShaderMaterial . name ) ; } else { logger . warn ( "BufferedGeometryAccessor#color: unknown material type" , meshMaterial . type ) ; } return undefined ; } ; if ( Array . isArray ( this . object . material ) ) { const results = new Array < THREE . Color | undefined > ( ) ; const materials = this . object . material as THREE . Material [ ] ; for ( const material of materials ) { results . push ( getColor ( material ) ) ; } return results ; } else { return getColor ( this . object . material ) ; } } } /**
 * Abstract base class of an accessor for nonindexed geometry.
 */ export abstract class BufferedGeometryAccessor extends BufferedGeometryAccessorBase { param object param geometryType param bufferGeometry param stride constructor ( readonly object , readonly geometryType , protected readonly bufferGeometry , protected stride ) { super ( object , geometryType , bufferGeometry ) ; } clear ( ) { assert ( this . checkSetUp ( ) , "BufferedGeometryAccessor not setup" ) ; const positionsArray = this . position . array as number [ ] ; const start = this . start * this . itemSize ; const end = this . end * this . itemSize ; for ( let i = start ; i < end ; i ++ ) { positionsArray [ i ] = 0 ; } this . position . needsUpdate = true ; } getVertices ( ) { assert ( this . checkSetUp ( ) , "BufferedGeometryAccessor not setup" ) ; const start = this . start ; const end = this . end ; return ( this . position . array as Float32Array ) . subarray ( start * this . itemSize , end * this . itemSize ) ; } protected checkSetUp ( ) { return ( this . position !== undefined && this . start !== undefined && this . end !== undefined && this . start >= 0 && this . end <= this . position . count && this . start <= this . end ) ; } } /**
 * Accessor for nonindexed line geometry.
 */ export class BufferedGeometryLineAccessor extends BufferedGeometryAccessor implements ILineAccessor { constructor ( readonly object , readonly geometryType , readonly bufferGeometry ) { super ( object , geometryType , bufferGeometry , 3 ) ; } isLineAccessor ( ) { return true ; } get width ( ) : number | undefined { assert ( this . checkSetUp ( ) , "RoBufferedGeometryLineAccessor not setup" ) ; return undefined ; } } /**
 * Accessor for nonindexed unspecified (`Object3D`) geometry.
 */ export class BufferedGeometryObject3dAccessor extends BufferedGeometryAccessor implements IObject3dAccessor { constructor ( readonly object , readonly geometryType , readonly bufferGeometry ) { super ( object , geometryType , bufferGeometry , 1 ) ; } isObject3dAccessor ( ) { return true ; } @override  getVertices ( ) { return super . getVertices ( ) ; } } /**
 * Abstract base class of indexed geometry.
 */ export abstract class IndexedBufferedGeometryAccessor extends BufferedGeometryAccessorBase { indices : number [ ] ; param object param geometryType param bufferGeometry param start param end constructor ( readonly object , readonly geometryType , protected readonly bufferGeometry , start ? , end ? ) { super ( object , geometryType , bufferGeometry ) ; this . indices = this . bufferGeometry . index !== null ? ( this . bufferGeometry . index . array as number [ ] ) : ( ( undefined as any ) as number [ ] ) ; if ( ! this . indices ) { logger . warn ( "IndexedBufferedGeometryAccessor#constructor: BufferGeometry has no " + "index" ) ; assert ( ! ! this . indices ) ; } else { if ( ! ( this . indices instanceof Uint32Array ) ) { logger . warn ( "IndexedBufferedGeometryAccessor#constructor: BufferGeometry index " + "has wrong type" ) ; assert ( this . indices instanceof Uint32Array ) ; } } } returns @override
      getCount ( ) { return this . indices . length ; } protected checkSetUp ( ) { return ( ! ! this . indices && this . start !== undefined && this . end !== undefined && this . start >= 0 && this . end <= this . indices . length && this . start <= this . end ) ; } } /**
 * Accessor for lines in an indexed geometry.
 */ export class IndexedBufferedGeometryLineAccessor extends IndexedBufferedGeometryAccessor implements ILineAccessor { constructor ( readonly object , readonly geometryType , readonly bufferGeometry ) { super ( object , geometryType , bufferGeometry , 3 ) ; } isLineAccessor ( ) { return true ; } returns get width ( ) : number | undefined { assert ( this . checkSetUp ( ) , "RoIndexedBufferedGeometryLineAccessor not setup" ) ; if ( this . geometryType === GeometryType . ExtrudedLine ) { const start = this . start + this . startCapSize ; const positionArray = this . position . array as Float32Array ; return reconstructLineWidth ( positionArray , start ) ; } return undefined ; } clear ( ) { assert ( this . checkSetUp ( ) , "RoIndexedBufferedGeometryLineAccessor not setup" ) ; const start = this . start ; const end = this . end ; for ( let i = start ; i < end ; i ++ ) { this . indices [ i ] = 0 ; } if ( this . bufferGeometry . index !== null ) { this . bufferGeometry . index . needsUpdate = true ; } } getVertices ( ) { assert ( this . checkSetUp ( ) , "RoIndexedBufferedGeometryLineAccessor not setup" ) ; const itemSize = this . itemSize ; const start = this . start ; const end = this . end ; const result = new Float32Array ( ( end - start ) * itemSize ) ; const positionArray = this . position . array ; if ( itemSize === 2 ) { for ( let i = start , j = 0 ; i < end ; i ++ , j += itemSize ) { const index = this . indices [ i ] ; result [ j + 0 ] = positionArray [ index * itemSize + 0 ] ; result [ j + 1 ] = positionArray [ index * itemSize + 1 ] ; } } if ( itemSize === 3 ) { for ( let i = start , j = 0 ; i < end ; i ++ , j += itemSize ) { const index = this . indices [ i ] ; result [ j + 0 ] = positionArray [ index * itemSize + 0 ] ; result [ j + 1 ] = positionArray [ index * itemSize + 1 ] ; result [ j + 2 ] = positionArray [ index * itemSize + 2 ] ; } } else { for ( let i = start , j = 0 ; i < end ; i ++ , j ++ ) { const index = this . indices [ i ] ; for ( let k = 0 ; k < itemSize ; k ++ ) { result [ j * itemSize + k ] = positionArray [ index * itemSize + k ] ; } } } return result ; } }