319 lines
8.7 KiB
JavaScript
319 lines
8.7 KiB
JavaScript
import {
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BufferGeometry,
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Color,
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Data3DTexture,
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FileLoader,
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Float32BufferAttribute,
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Loader,
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LinearFilter,
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Mesh,
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MeshStandardMaterial,
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NearestFilter,
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RedFormat,
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SRGBColorSpace
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} from 'three';
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class VOXLoader extends Loader {
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load( url, onLoad, onProgress, onError ) {
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const scope = this;
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const loader = new FileLoader( scope.manager );
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loader.setPath( scope.path );
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loader.setResponseType( 'arraybuffer' );
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loader.setRequestHeader( scope.requestHeader );
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loader.load( url, function ( buffer ) {
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try {
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onLoad( scope.parse( buffer ) );
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} catch ( e ) {
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if ( onError ) {
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onError( e );
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} else {
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console.error( e );
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}
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scope.manager.itemError( url );
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}
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}, onProgress, onError );
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}
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parse( buffer ) {
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const data = new DataView( buffer );
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const id = data.getUint32( 0, true );
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const version = data.getUint32( 4, true );
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if ( id !== 542658390 ) {
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console.error( 'THREE.VOXLoader: Invalid VOX file.' );
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return;
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}
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if ( version !== 150 ) {
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console.error( 'THREE.VOXLoader: Invalid VOX file. Unsupported version:', version );
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return;
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}
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const DEFAULT_PALETTE = [
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0x00000000, 0xffffffff, 0xffccffff, 0xff99ffff, 0xff66ffff, 0xff33ffff, 0xff00ffff, 0xffffccff,
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0xffccccff, 0xff99ccff, 0xff66ccff, 0xff33ccff, 0xff00ccff, 0xffff99ff, 0xffcc99ff, 0xff9999ff,
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0xff6699ff, 0xff3399ff, 0xff0099ff, 0xffff66ff, 0xffcc66ff, 0xff9966ff, 0xff6666ff, 0xff3366ff,
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0xff0066ff, 0xffff33ff, 0xffcc33ff, 0xff9933ff, 0xff6633ff, 0xff3333ff, 0xff0033ff, 0xffff00ff,
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0xffcc00ff, 0xff9900ff, 0xff6600ff, 0xff3300ff, 0xff0000ff, 0xffffffcc, 0xffccffcc, 0xff99ffcc,
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0xff66ffcc, 0xff33ffcc, 0xff00ffcc, 0xffffcccc, 0xffcccccc, 0xff99cccc, 0xff66cccc, 0xff33cccc,
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0xff00cccc, 0xffff99cc, 0xffcc99cc, 0xff9999cc, 0xff6699cc, 0xff3399cc, 0xff0099cc, 0xffff66cc,
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0xffcc66cc, 0xff9966cc, 0xff6666cc, 0xff3366cc, 0xff0066cc, 0xffff33cc, 0xffcc33cc, 0xff9933cc,
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0xff6633cc, 0xff3333cc, 0xff0033cc, 0xffff00cc, 0xffcc00cc, 0xff9900cc, 0xff6600cc, 0xff3300cc,
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0xff0000cc, 0xffffff99, 0xffccff99, 0xff99ff99, 0xff66ff99, 0xff33ff99, 0xff00ff99, 0xffffcc99,
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0xffcccc99, 0xff99cc99, 0xff66cc99, 0xff33cc99, 0xff00cc99, 0xffff9999, 0xffcc9999, 0xff999999,
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0xff669999, 0xff339999, 0xff009999, 0xffff6699, 0xffcc6699, 0xff996699, 0xff666699, 0xff336699,
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0xff006699, 0xffff3399, 0xffcc3399, 0xff993399, 0xff663399, 0xff333399, 0xff003399, 0xffff0099,
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0xffcc0099, 0xff990099, 0xff660099, 0xff330099, 0xff000099, 0xffffff66, 0xffccff66, 0xff99ff66,
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0xff66ff66, 0xff33ff66, 0xff00ff66, 0xffffcc66, 0xffcccc66, 0xff99cc66, 0xff66cc66, 0xff33cc66,
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0xff00cc66, 0xffff9966, 0xffcc9966, 0xff999966, 0xff669966, 0xff339966, 0xff009966, 0xffff6666,
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0xffcc6666, 0xff996666, 0xff666666, 0xff336666, 0xff006666, 0xffff3366, 0xffcc3366, 0xff993366,
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0xff663366, 0xff333366, 0xff003366, 0xffff0066, 0xffcc0066, 0xff990066, 0xff660066, 0xff330066,
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0xff000066, 0xffffff33, 0xffccff33, 0xff99ff33, 0xff66ff33, 0xff33ff33, 0xff00ff33, 0xffffcc33,
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0xffcccc33, 0xff99cc33, 0xff66cc33, 0xff33cc33, 0xff00cc33, 0xffff9933, 0xffcc9933, 0xff999933,
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0xff669933, 0xff339933, 0xff009933, 0xffff6633, 0xffcc6633, 0xff996633, 0xff666633, 0xff336633,
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0xff006633, 0xffff3333, 0xffcc3333, 0xff993333, 0xff663333, 0xff333333, 0xff003333, 0xffff0033,
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0xffcc0033, 0xff990033, 0xff660033, 0xff330033, 0xff000033, 0xffffff00, 0xffccff00, 0xff99ff00,
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0xff66ff00, 0xff33ff00, 0xff00ff00, 0xffffcc00, 0xffcccc00, 0xff99cc00, 0xff66cc00, 0xff33cc00,
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0xff00cc00, 0xffff9900, 0xffcc9900, 0xff999900, 0xff669900, 0xff339900, 0xff009900, 0xffff6600,
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0xffcc6600, 0xff996600, 0xff666600, 0xff336600, 0xff006600, 0xffff3300, 0xffcc3300, 0xff993300,
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0xff663300, 0xff333300, 0xff003300, 0xffff0000, 0xffcc0000, 0xff990000, 0xff660000, 0xff330000,
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0xff0000ee, 0xff0000dd, 0xff0000bb, 0xff0000aa, 0xff000088, 0xff000077, 0xff000055, 0xff000044,
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0xff000022, 0xff000011, 0xff00ee00, 0xff00dd00, 0xff00bb00, 0xff00aa00, 0xff008800, 0xff007700,
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0xff005500, 0xff004400, 0xff002200, 0xff001100, 0xffee0000, 0xffdd0000, 0xffbb0000, 0xffaa0000,
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0xff880000, 0xff770000, 0xff550000, 0xff440000, 0xff220000, 0xff110000, 0xffeeeeee, 0xffdddddd,
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0xffbbbbbb, 0xffaaaaaa, 0xff888888, 0xff777777, 0xff555555, 0xff444444, 0xff222222, 0xff111111
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];
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let i = 8;
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let chunk;
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const chunks = [];
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while ( i < data.byteLength ) {
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let id = '';
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for ( let j = 0; j < 4; j ++ ) {
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id += String.fromCharCode( data.getUint8( i ++ ) );
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}
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const chunkSize = data.getUint32( i, true ); i += 4;
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i += 4; // childChunks
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if ( id === 'SIZE' ) {
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const x = data.getUint32( i, true ); i += 4;
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const y = data.getUint32( i, true ); i += 4;
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const z = data.getUint32( i, true ); i += 4;
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chunk = {
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palette: DEFAULT_PALETTE,
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size: { x: x, y: y, z: z },
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};
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chunks.push( chunk );
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i += chunkSize - ( 3 * 4 );
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} else if ( id === 'XYZI' ) {
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const numVoxels = data.getUint32( i, true ); i += 4;
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chunk.data = new Uint8Array( buffer, i, numVoxels * 4 );
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i += numVoxels * 4;
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} else if ( id === 'RGBA' ) {
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const palette = [ 0 ];
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for ( let j = 0; j < 256; j ++ ) {
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palette[ j + 1 ] = data.getUint32( i, true ); i += 4;
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}
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chunk.palette = palette;
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} else {
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// console.log( id, chunkSize, childChunks );
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i += chunkSize;
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}
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}
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return chunks;
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}
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}
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class VOXMesh extends Mesh {
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constructor( chunk ) {
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const data = chunk.data;
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const size = chunk.size;
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const palette = chunk.palette;
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//
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const vertices = [];
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const colors = [];
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const nx = [ 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1 ];
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const px = [ 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0 ];
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const py = [ 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1 ];
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const ny = [ 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0 ];
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const nz = [ 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0 ];
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const pz = [ 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 1 ];
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const _color = new Color();
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function add( tile, x, y, z, r, g, b ) {
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x -= size.x / 2;
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y -= size.z / 2;
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z += size.y / 2;
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for ( let i = 0; i < 18; i += 3 ) {
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_color.setRGB( r, g, b, SRGBColorSpace );
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vertices.push( tile[ i + 0 ] + x, tile[ i + 1 ] + y, tile[ i + 2 ] + z );
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colors.push( _color.r, _color.g, _color.b );
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}
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}
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// Store data in a volume for sampling
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const offsety = size.x;
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const offsetz = size.x * size.y;
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const array = new Uint8Array( size.x * size.y * size.z );
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for ( let j = 0; j < data.length; j += 4 ) {
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const x = data[ j + 0 ];
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const y = data[ j + 1 ];
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const z = data[ j + 2 ];
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const index = x + ( y * offsety ) + ( z * offsetz );
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array[ index ] = 255;
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}
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// Construct geometry
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let hasColors = false;
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for ( let j = 0; j < data.length; j += 4 ) {
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const x = data[ j + 0 ];
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const y = data[ j + 1 ];
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const z = data[ j + 2 ];
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const c = data[ j + 3 ];
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const hex = palette[ c ];
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const r = ( hex >> 0 & 0xff ) / 0xff;
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const g = ( hex >> 8 & 0xff ) / 0xff;
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const b = ( hex >> 16 & 0xff ) / 0xff;
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if ( r > 0 || g > 0 || b > 0 ) hasColors = true;
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const index = x + ( y * offsety ) + ( z * offsetz );
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if ( array[ index + 1 ] === 0 || x === size.x - 1 ) add( px, x, z, - y, r, g, b );
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if ( array[ index - 1 ] === 0 || x === 0 ) add( nx, x, z, - y, r, g, b );
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if ( array[ index + offsety ] === 0 || y === size.y - 1 ) add( ny, x, z, - y, r, g, b );
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if ( array[ index - offsety ] === 0 || y === 0 ) add( py, x, z, - y, r, g, b );
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if ( array[ index + offsetz ] === 0 || z === size.z - 1 ) add( pz, x, z, - y, r, g, b );
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if ( array[ index - offsetz ] === 0 || z === 0 ) add( nz, x, z, - y, r, g, b );
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}
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const geometry = new BufferGeometry();
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geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
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geometry.computeVertexNormals();
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const material = new MeshStandardMaterial();
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if ( hasColors ) {
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geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
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material.vertexColors = true;
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}
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super( geometry, material );
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}
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}
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class VOXData3DTexture extends Data3DTexture {
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constructor( chunk ) {
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const data = chunk.data;
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const size = chunk.size;
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const offsety = size.x;
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const offsetz = size.x * size.y;
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const array = new Uint8Array( size.x * size.y * size.z );
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for ( let j = 0; j < data.length; j += 4 ) {
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const x = data[ j + 0 ];
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const y = data[ j + 1 ];
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const z = data[ j + 2 ];
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const index = x + ( y * offsety ) + ( z * offsetz );
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array[ index ] = 255;
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}
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super( array, size.x, size.y, size.z );
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this.format = RedFormat;
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this.minFilter = NearestFilter;
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this.magFilter = LinearFilter;
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this.unpackAlignment = 1;
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this.needsUpdate = true;
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}
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}
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export { VOXLoader, VOXMesh, VOXData3DTexture };
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