import { useTexture } from '@react-three/drei' ; import { useMemo , useRef } from 'react' ; import { useFrame } from 'react-three-fiber' ; import { BufferAttribute , BufferGeometry , Mesh , Texture } from 'three' ; const CubeTypedArrays = ( props ) => { const { color , ndx , ... rest } = props ; const mesh = useRef < Mesh > ( ) ; const texture = useTexture ( '/static/images/star.png' ) as Texture ; useFrame ( ( ) => { if ( mesh . current ) { const speed = 1 + ndx * 0.1 ; const rot = 0.01 * speed ; mesh . current . rotation . x += rot ; mesh . current . rotation . y += rot ; } } ) ; const geometry = useMemo ( ( ) => { const geo = new BufferGeometry ( ) ; const vertices = [ { pos : [ - 1 , - 1 , 1 ] , norm : [ 0 , 0 , 1 ] , uv : [ 0 , 0 ] } , { pos : [ 1 , - 1 , 1 ] , norm : [ 0 , 0 , 1 ] , uv : [ 1 , 0 ] } , { pos : [ - 1 , 1 , 1 ] , norm : [ 0 , 0 , 1 ] , uv : [ 0 , 1 ] } , { pos : [ 1 , 1 , 1 ] , norm : [ 0 , 0 , 1 ] , uv : [ 1 , 1 ] } , { pos : [ 1 , - 1 , 1 ] , norm : [ 1 , 0 , 0 ] , uv : [ 0 , 0 ] } , { pos : [ 1 , - 1 , - 1 ] , norm : [ 1 , 0 , 0 ] , uv : [ 1 , 0 ] } , { pos : [ 1 , 1 , 1 ] , norm : [ 1 , 0 , 0 ] , uv : [ 0 , 1 ] } , { pos : [ 1 , 1 , - 1 ] , norm : [ 1 , 0 , 0 ] , uv : [ 1 , 1 ] } , { pos : [ 1 , - 1 , - 1 ] , norm : [ 0 , 0 , - 1 ] , uv : [ 0 , 0 ] } , { pos : [ - 1 , - 1 , - 1 ] , norm : [ 0 , 0 , - 1 ] , uv : [ 1 , 0 ] } , { pos : [ 1 , 1 , - 1 ] , norm : [ 0 , 0 , - 1 ] , uv : [ 0 , 1 ] } , { pos : [ - 1 , 1 , - 1 ] , norm : [ 0 , 0 , - 1 ] , uv : [ 1 , 1 ] } , { pos : [ - 1 , - 1 , - 1 ] , norm : [ - 1 , 0 , 0 ] , uv : [ 0 , 0 ] } , { pos : [ - 1 , - 1 , 1 ] , norm : [ - 1 , 0 , 0 ] , uv : [ 1 , 0 ] } , { pos : [ - 1 , 1 , - 1 ] , norm : [ - 1 , 0 , 0 ] , uv : [ 0 , 1 ] } , { pos : [ - 1 , 1 , 1 ] , norm : [ - 1 , 0 , 0 ] , uv : [ 1 , 1 ] } , { pos : [ 1 , 1 , - 1 ] , norm : [ 0 , 1 , 0 ] , uv : [ 0 , 0 ] } , { pos : [ - 1 , 1 , - 1 ] , norm : [ 0 , 1 , 0 ] , uv : [ 1 , 0 ] } , { pos : [ 1 , 1 , 1 ] , norm : [ 0 , 1 , 0 ] , uv : [ 0 , 1 ] } , { pos : [ - 1 , 1 , 1 ] , norm : [ 0 , 1 , 0 ] , uv : [ 1 , 1 ] } , { pos : [ 1 , - 1 , 1 ] , norm : [ 0 , - 1 , 0 ] , uv : [ 0 , 0 ] } , { pos : [ - 1 , - 1 , 1 ] , norm : [ 0 , - 1 , 0 ] , uv : [ 1 , 0 ] } , { pos : [ 1 , - 1 , - 1 ] , norm : [ 0 , - 1 , 0 ] , uv : [ 0 , 1 ] } , { pos : [ - 1 , - 1 , - 1 ] , norm : [ 0 , - 1 , 0 ] , uv : [ 1 , 1 ] } , ] ; const VERTICES = vertices . length ; const POSITION_COMPONENTS = 3 ; const NORMAL_COMPONENTS = 3 ; const UV_COMPONENTS = 2 ; const positions = new Float32Array ( VERTICES * POSITION_COMPONENTS ) ; const normals = new Float32Array ( VERTICES * NORMAL_COMPONENTS ) ; const uvs = new Float32Array ( VERTICES * UV_COMPONENTS ) ; let posNdx = 0 ; let nrmNdx = 0 ; let uvNdx = 0 ; vertices . map ( ( vertex ) => { positions . set ( vertex . pos , posNdx ) ; normals . set ( vertex . norm , nrmNdx ) ; uvs . set ( vertex . uv , uvNdx ) ; posNdx += POSITION_COMPONENTS ; nrmNdx += NORMAL_COMPONENTS ; uvNdx += UV_COMPONENTS ; } ) ; geo . setAttribute ( 'position' , new BufferAttribute ( positions , POSITION_COMPONENTS ) ) ; geo . setAttribute ( 'normal' , new BufferAttribute ( normals , NORMAL_COMPONENTS ) ) ; geo . setAttribute ( 'uv' , new BufferAttribute ( uvs , UV_COMPONENTS ) ) ; geo . setIndex ( [ 0 , 1 , 2 , 2 , 1 , 3 , 4 , 5 , 6 , 6 , 5 , 7 , 8 , 9 , 10 , 10 , 9 , 11 , 12 , 13 , 14 , 14 , 13 , 15 , 16 , 17 , 18 , 18 , 17 , 19 , 20 , 21 , 22 , 22 , 21 , 23 , ] ) ; return geo ; } , [ ] ) ; return ( < mesh geometry = { geometry } ref = { mesh } { ... rest } > < meshPhongMaterial color = { color } map = { texture } / > < /mesh>); } ; export default CubeTypedArrays ;