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@@ -1,725 +0,0 @@
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-import {
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- Color,
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- DoubleSide,
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- Matrix4,
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- MeshBasicMaterial
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-} from 'three';
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-
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-/**
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- * https://github.com/gkjohnson/collada-exporter-js
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- *
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- * Usage:
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- * const exporter = new ColladaExporter();
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- *
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- * const data = exporter.parse(mesh);
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- *
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- * Format Definition:
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- * https://www.khronos.org/collada/
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- */
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-
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-class ColladaExporter {
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-
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- parse( object, onDone, options = {} ) {
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-
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- options = Object.assign( {
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- version: '1.4.1',
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- author: null,
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- textureDirectory: '',
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- upAxis: 'Y_UP',
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- unitName: null,
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- unitMeter: null,
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- }, options );
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-
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- if ( options.upAxis.match( /^[XYZ]_UP$/ ) === null ) {
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-
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- console.error( 'ColladaExporter: Invalid upAxis: valid values are X_UP, Y_UP or Z_UP.' );
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- return null;
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-
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- }
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-
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- if ( options.unitName !== null && options.unitMeter === null ) {
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-
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- console.error( 'ColladaExporter: unitMeter needs to be specified if unitName is specified.' );
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- return null;
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-
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- }
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-
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- if ( options.unitMeter !== null && options.unitName === null ) {
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-
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- console.error( 'ColladaExporter: unitName needs to be specified if unitMeter is specified.' );
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- return null;
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-
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- }
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-
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- if ( options.textureDirectory !== '' ) {
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-
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- options.textureDirectory = `${ options.textureDirectory }/`
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- .replace( /\\/g, '/' )
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- .replace( /\/+/g, '/' );
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-
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- }
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-
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- const version = options.version;
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-
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- if ( version !== '1.4.1' && version !== '1.5.0' ) {
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-
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- console.warn( `ColladaExporter : Version ${ version } not supported for export. Only 1.4.1 and 1.5.0.` );
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- return null;
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-
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- }
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-
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- // Convert the urdf xml into a well-formatted, indented format
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- function format( urdf ) {
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-
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- const IS_END_TAG = /^<\//;
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- const IS_SELF_CLOSING = /(\?>$)|(\/>$)/;
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- const HAS_TEXT = /<[^>]+>[^<]*<\/[^<]+>/;
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-
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- const pad = ( ch, num ) => ( num > 0 ? ch + pad( ch, num - 1 ) : '' );
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-
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- let tagnum = 0;
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-
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- return urdf
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- .match( /(<[^>]+>[^<]+<\/[^<]+>)|(<[^>]+>)/g )
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- .map( tag => {
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-
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- if ( ! HAS_TEXT.test( tag ) && ! IS_SELF_CLOSING.test( tag ) && IS_END_TAG.test( tag ) ) {
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-
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- tagnum --;
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-
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- }
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-
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- const res = `${ pad( ' ', tagnum ) }${ tag }`;
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-
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- if ( ! HAS_TEXT.test( tag ) && ! IS_SELF_CLOSING.test( tag ) && ! IS_END_TAG.test( tag ) ) {
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-
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- tagnum ++;
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-
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- }
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-
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- return res;
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-
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- } )
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- .join( '\n' );
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-
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- }
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-
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- // Convert an image into a png format for saving
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- function base64ToBuffer( str ) {
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-
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- const b = atob( str );
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- const buf = new Uint8Array( b.length );
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-
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- for ( let i = 0, l = buf.length; i < l; i ++ ) {
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-
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- buf[ i ] = b.charCodeAt( i );
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-
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- }
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-
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- return buf;
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-
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- }
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-
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- let canvas, ctx;
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-
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- function imageToData( image, ext ) {
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-
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- if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
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- ( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
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- ( typeof OffscreenCanvas !== 'undefined' && image instanceof OffscreenCanvas ) ||
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- ( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {
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-
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- canvas = canvas || document.createElement( 'canvas' );
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- ctx = ctx || canvas.getContext( '2d' );
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-
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- canvas.width = image.width;
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- canvas.height = image.height;
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-
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- ctx.drawImage( image, 0, 0 );
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-
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- // Get the base64 encoded data
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- const base64data = canvas
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- .toDataURL( `image/${ ext }`, 1 )
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- .replace( /^data:image\/(png|jpg);base64,/, '' );
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-
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- // Convert to a uint8 array
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- return base64ToBuffer( base64data );
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-
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- } else {
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-
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- throw new Error( 'THREE.ColladaExporter: No valid image data found. Unable to process texture.' );
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-
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- }
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-
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- }
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-
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- // gets the attribute array. Generate a new array if the attribute is interleaved
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- const getFuncs = [ 'getX', 'getY', 'getZ', 'getW' ];
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- const tempColor = new Color();
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-
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- function attrBufferToArray( attr, isColor = false ) {
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-
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- if ( isColor ) {
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-
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- // convert the colors to srgb before export
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- // colors are always written as floats
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- const arr = new Float32Array( attr.count * 3 );
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- for ( let i = 0, l = attr.count; i < l; i ++ ) {
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-
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- tempColor
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- .fromBufferAttribute( attr, i )
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- .convertLinearToSRGB();
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-
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- arr[ 3 * i + 0 ] = tempColor.r;
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- arr[ 3 * i + 1 ] = tempColor.g;
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- arr[ 3 * i + 2 ] = tempColor.b;
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-
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- }
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-
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- return arr;
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-
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- } else if ( attr.isInterleavedBufferAttribute ) {
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-
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- // use the typed array constructor to save on memory
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- const arr = new attr.array.constructor( attr.count * attr.itemSize );
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- const size = attr.itemSize;
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-
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- for ( let i = 0, l = attr.count; i < l; i ++ ) {
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-
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- for ( let j = 0; j < size; j ++ ) {
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-
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- arr[ i * size + j ] = attr[ getFuncs[ j ] ]( i );
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-
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- }
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-
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- }
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-
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- return arr;
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-
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- } else {
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-
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- return attr.array;
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-
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- }
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-
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- }
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-
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- // Returns an array of the same type starting at the `st` index,
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- // and `ct` length
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- function subArray( arr, st, ct ) {
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-
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- if ( Array.isArray( arr ) ) return arr.slice( st, st + ct );
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- else return new arr.constructor( arr.buffer, st * arr.BYTES_PER_ELEMENT, ct );
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-
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- }
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-
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- // Returns the string for a geometry's attribute
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- function getAttribute( attr, name, params, type, isColor = false ) {
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-
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- const array = attrBufferToArray( attr, isColor );
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- const res =
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- `<source id="${ name }">` +
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-
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- `<float_array id="${ name }-array" count="${ array.length }">` +
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- array.join( ' ' ) +
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- '</float_array>' +
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-
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- '<technique_common>' +
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- `<accessor source="#${ name }-array" count="${ Math.floor( array.length / attr.itemSize ) }" stride="${ attr.itemSize }">` +
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-
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- params.map( n => `<param name="${ n }" type="${ type }" />` ).join( '' ) +
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-
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- '</accessor>' +
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- '</technique_common>' +
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- '</source>';
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-
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- return res;
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-
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- }
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-
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- // Returns the string for a node's transform information
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- let transMat;
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- function getTransform( o ) {
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-
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- // ensure the object's matrix is up to date
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- // before saving the transform
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- o.updateMatrix();
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-
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- transMat = transMat || new Matrix4();
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- transMat.copy( o.matrix );
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- transMat.transpose();
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- return `<matrix>${ transMat.toArray().join( ' ' ) }</matrix>`;
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-
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- }
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-
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- // Process the given piece of geometry into the geometry library
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- // Returns the mesh id
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- function processGeometry( bufferGeometry ) {
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-
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- let info = geometryInfo.get( bufferGeometry );
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-
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- if ( ! info ) {
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-
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- const meshid = `Mesh${ libraryGeometries.length + 1 }`;
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-
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- const indexCount =
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- bufferGeometry.index ?
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- bufferGeometry.index.count * bufferGeometry.index.itemSize :
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- bufferGeometry.attributes.position.count;
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-
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- const groups =
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- bufferGeometry.groups != null && bufferGeometry.groups.length !== 0 ?
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- bufferGeometry.groups :
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- [ { start: 0, count: indexCount, materialIndex: 0 } ];
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-
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-
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- const gname = bufferGeometry.name ? ` name="${ bufferGeometry.name }"` : '';
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- let gnode = `<geometry id="${ meshid }"${ gname }><mesh>`;
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-
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- // define the geometry node and the vertices for the geometry
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- const posName = `${ meshid }-position`;
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- const vertName = `${ meshid }-vertices`;
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- gnode += getAttribute( bufferGeometry.attributes.position, posName, [ 'X', 'Y', 'Z' ], 'float' );
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- gnode += `<vertices id="${ vertName }"><input semantic="POSITION" source="#${ posName }" /></vertices>`;
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-
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- // NOTE: We're not optimizing the attribute arrays here, so they're all the same length and
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- // can therefore share the same triangle indices. However, MeshLab seems to have trouble opening
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- // models with attributes that share an offset.
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- // MeshLab Bug#424: https://sourceforge.net/p/meshlab/bugs/424/
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-
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- // serialize normals
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- let triangleInputs = `<input semantic="VERTEX" source="#${ vertName }" offset="0" />`;
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- if ( 'normal' in bufferGeometry.attributes ) {
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-
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- const normName = `${ meshid }-normal`;
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- gnode += getAttribute( bufferGeometry.attributes.normal, normName, [ 'X', 'Y', 'Z' ], 'float' );
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- triangleInputs += `<input semantic="NORMAL" source="#${ normName }" offset="0" />`;
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-
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- }
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-
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- // serialize uvs
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- if ( 'uv' in bufferGeometry.attributes ) {
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-
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- const uvName = `${ meshid }-texcoord`;
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- gnode += getAttribute( bufferGeometry.attributes.uv, uvName, [ 'S', 'T' ], 'float' );
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- triangleInputs += `<input semantic="TEXCOORD" source="#${ uvName }" offset="0" set="0" />`;
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-
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- }
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-
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- // serialize lightmap uvs
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- if ( 'uv1' in bufferGeometry.attributes ) {
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-
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- const uvName = `${ meshid }-texcoord2`;
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- gnode += getAttribute( bufferGeometry.attributes.uv1, uvName, [ 'S', 'T' ], 'float' );
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- triangleInputs += `<input semantic="TEXCOORD" source="#${ uvName }" offset="0" set="1" />`;
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-
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- }
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-
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- // serialize colors
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- if ( 'color' in bufferGeometry.attributes ) {
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-
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- // colors are always written as floats
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- const colName = `${ meshid }-color`;
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- gnode += getAttribute( bufferGeometry.attributes.color, colName, [ 'R', 'G', 'B' ], 'float', true );
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- triangleInputs += `<input semantic="COLOR" source="#${ colName }" offset="0" />`;
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-
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- }
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-
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- let indexArray = null;
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- if ( bufferGeometry.index ) {
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-
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- indexArray = attrBufferToArray( bufferGeometry.index );
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-
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- } else {
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-
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- indexArray = new Array( indexCount );
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- for ( let i = 0, l = indexArray.length; i < l; i ++ ) indexArray[ i ] = i;
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-
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- }
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-
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- for ( let i = 0, l = groups.length; i < l; i ++ ) {
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-
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- const group = groups[ i ];
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- const subarr = subArray( indexArray, group.start, group.count );
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- const polycount = subarr.length / 3;
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- gnode += `<triangles material="MESH_MATERIAL_${ group.materialIndex }" count="${ polycount }">`;
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- gnode += triangleInputs;
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-
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- gnode += `<p>${ subarr.join( ' ' ) }</p>`;
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- gnode += '</triangles>';
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-
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- }
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-
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- gnode += '</mesh></geometry>';
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-
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- libraryGeometries.push( gnode );
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-
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- info = { meshid: meshid, bufferGeometry: bufferGeometry };
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- geometryInfo.set( bufferGeometry, info );
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-
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- }
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-
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- return info;
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-
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- }
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-
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- // Process the given texture into the image library
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- // Returns the image library
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- function processTexture( tex ) {
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-
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- let texid = imageMap.get( tex );
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-
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- if ( texid === undefined ) {
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-
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- texid = `image-${ libraryImages.length + 1 }`;
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-
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- const ext = 'png';
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- const name = tex.name || texid;
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- let imageNode = `<image id="${ texid }" name="${ name }">`;
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-
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- if ( version === '1.5.0' ) {
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-
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- imageNode += `<init_from><ref>${ options.textureDirectory }${ name }.${ ext }</ref></init_from>`;
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-
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- } else {
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-
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- // version image node 1.4.1
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- imageNode += `<init_from>${ options.textureDirectory }${ name }.${ ext }</init_from>`;
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-
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- }
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-
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- imageNode += '</image>';
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-
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- libraryImages.push( imageNode );
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- imageMap.set( tex, texid );
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- textures.push( {
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- directory: options.textureDirectory,
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- name,
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- ext,
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- data: imageToData( tex.image, ext ),
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- original: tex
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- } );
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-
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- }
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-
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- return texid;
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-
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- }
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-
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- // Process the given material into the material and effect libraries
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- // Returns the material id
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- function processMaterial( m ) {
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-
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- let matid = materialMap.get( m );
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-
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- if ( matid == null ) {
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-
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- matid = `Mat${ libraryEffects.length + 1 }`;
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-
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- let type = 'phong';
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-
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- if ( m.isMeshLambertMaterial === true ) {
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-
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- type = 'lambert';
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-
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- } else if ( m.isMeshBasicMaterial === true ) {
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-
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- type = 'constant';
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-
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- if ( m.map !== null ) {
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-
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- // The Collada spec does not support diffuse texture maps with the
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- // constant shader type.
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- // mrdoob/three.js#15469
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- console.warn( 'ColladaExporter: Texture maps not supported with MeshBasicMaterial.' );
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-
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- }
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-
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- }
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-
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- const emissive = m.emissive ? m.emissive : new Color( 0, 0, 0 );
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- const diffuse = m.color ? m.color : new Color( 0, 0, 0 );
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- const specular = m.specular ? m.specular : new Color( 1, 1, 1 );
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- const shininess = m.shininess || 0;
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- const reflectivity = m.reflectivity || 0;
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-
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- emissive.convertLinearToSRGB();
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- specular.convertLinearToSRGB();
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- diffuse.convertLinearToSRGB();
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-
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- // Do not export and alpha map for the reasons mentioned in issue (#13792)
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- // in three.js alpha maps are black and white, but collada expects the alpha
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- // channel to specify the transparency
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- let transparencyNode = '';
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- if ( m.transparent === true ) {
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-
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- transparencyNode +=
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- '<transparent>' +
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- (
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- m.map ?
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- '<texture texture="diffuse-sampler"></texture>' :
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- '<float>1</float>'
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- ) +
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- '</transparent>';
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-
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- if ( m.opacity < 1 ) {
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-
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- transparencyNode += `<transparency><float>${ m.opacity }</float></transparency>`;
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-
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- }
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-
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- }
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-
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- const techniqueNode = `<technique sid="common"><${ type }>` +
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-
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- '<emission>' +
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-
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- (
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- m.emissiveMap ?
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- '<texture texture="emissive-sampler" texcoord="TEXCOORD" />' :
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- `<color sid="emission">${ emissive.r } ${ emissive.g } ${ emissive.b } 1</color>`
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- ) +
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-
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- '</emission>' +
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-
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- (
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- type !== 'constant' ?
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- '<diffuse>' +
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-
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- (
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- m.map ?
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- '<texture texture="diffuse-sampler" texcoord="TEXCOORD" />' :
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- `<color sid="diffuse">${ diffuse.r } ${ diffuse.g } ${ diffuse.b } 1</color>`
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- ) +
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- '</diffuse>'
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- : ''
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- ) +
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-
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- (
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- type !== 'constant' ?
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- '<bump>' +
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-
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- (
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- m.normalMap ? '<texture texture="bump-sampler" texcoord="TEXCOORD" />' : ''
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- ) +
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- '</bump>'
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- : ''
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- ) +
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-
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- (
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- type === 'phong' ?
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- `<specular><color sid="specular">${ specular.r } ${ specular.g } ${ specular.b } 1</color></specular>` +
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-
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- '<shininess>' +
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-
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- (
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- m.specularMap ?
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- '<texture texture="specular-sampler" texcoord="TEXCOORD" />' :
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- `<float sid="shininess">${ shininess }</float>`
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- ) +
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-
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- '</shininess>'
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- : ''
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- ) +
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-
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- `<reflective><color>${ diffuse.r } ${ diffuse.g } ${ diffuse.b } 1</color></reflective>` +
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-
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- `<reflectivity><float>${ reflectivity }</float></reflectivity>` +
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-
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- transparencyNode +
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-
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- `</${ type }></technique>`;
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-
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- const effectnode =
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- `<effect id="${ matid }-effect">` +
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- '<profile_COMMON>' +
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-
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- (
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- m.map ?
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- '<newparam sid="diffuse-surface"><surface type="2D">' +
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- `<init_from>${ processTexture( m.map ) }</init_from>` +
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- '</surface></newparam>' +
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- '<newparam sid="diffuse-sampler"><sampler2D><source>diffuse-surface</source></sampler2D></newparam>' :
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- ''
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- ) +
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-
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- (
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- m.specularMap ?
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- '<newparam sid="specular-surface"><surface type="2D">' +
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- `<init_from>${ processTexture( m.specularMap ) }</init_from>` +
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- '</surface></newparam>' +
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- '<newparam sid="specular-sampler"><sampler2D><source>specular-surface</source></sampler2D></newparam>' :
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- ''
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- ) +
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-
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- (
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- m.emissiveMap ?
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- '<newparam sid="emissive-surface"><surface type="2D">' +
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- `<init_from>${ processTexture( m.emissiveMap ) }</init_from>` +
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- '</surface></newparam>' +
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- '<newparam sid="emissive-sampler"><sampler2D><source>emissive-surface</source></sampler2D></newparam>' :
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- ''
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- ) +
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-
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- (
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- m.normalMap ?
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- '<newparam sid="bump-surface"><surface type="2D">' +
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- `<init_from>${ processTexture( m.normalMap ) }</init_from>` +
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- '</surface></newparam>' +
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- '<newparam sid="bump-sampler"><sampler2D><source>bump-surface</source></sampler2D></newparam>' :
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- ''
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- ) +
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-
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- techniqueNode +
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-
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- (
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- m.side === DoubleSide ?
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- '<extra><technique profile="THREEJS"><double_sided sid="double_sided" type="int">1</double_sided></technique></extra>' :
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- ''
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- ) +
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-
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- '</profile_COMMON>' +
|
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-
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- '</effect>';
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-
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- const materialName = m.name ? ` name="${ m.name }"` : '';
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|
- const materialNode = `<material id="${ matid }"${ materialName }><instance_effect url="#${ matid }-effect" /></material>`;
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|
-
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- libraryMaterials.push( materialNode );
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|
- libraryEffects.push( effectnode );
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|
- materialMap.set( m, matid );
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|
|
-
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|
|
- }
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-
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|
- return matid;
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-
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|
- }
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|
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-
|
|
|
- // Recursively process the object into a scene
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|
|
- function processObject( o ) {
|
|
|
-
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|
|
- let node = `<node name="${ o.name }">`;
|
|
|
-
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|
|
- node += getTransform( o );
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|
|
-
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|
|
- if ( o.isMesh === true && o.geometry !== null ) {
|
|
|
-
|
|
|
- // function returns the id associated with the mesh and a "BufferGeometry" version
|
|
|
- // of the geometry in case it's not a geometry.
|
|
|
- const geomInfo = processGeometry( o.geometry );
|
|
|
- const meshid = geomInfo.meshid;
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|
|
- const geometry = geomInfo.bufferGeometry;
|
|
|
-
|
|
|
- // ids of the materials to bind to the geometry
|
|
|
- let matids = null;
|
|
|
- let matidsArray;
|
|
|
-
|
|
|
- // get a list of materials to bind to the sub groups of the geometry.
|
|
|
- // If the amount of subgroups is greater than the materials, than reuse
|
|
|
- // the materials.
|
|
|
- const mat = o.material || new MeshBasicMaterial();
|
|
|
- const materials = Array.isArray( mat ) ? mat : [ mat ];
|
|
|
-
|
|
|
- if ( geometry.groups.length > materials.length ) {
|
|
|
-
|
|
|
- matidsArray = new Array( geometry.groups.length );
|
|
|
-
|
|
|
- } else {
|
|
|
-
|
|
|
- matidsArray = new Array( materials.length );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- matids = matidsArray.fill().map( ( v, i ) => processMaterial( materials[ i % materials.length ] ) );
|
|
|
-
|
|
|
- node +=
|
|
|
- `<instance_geometry url="#${ meshid }">` +
|
|
|
-
|
|
|
- (
|
|
|
- matids.length > 0 ?
|
|
|
- '<bind_material><technique_common>' +
|
|
|
- matids.map( ( id, i ) =>
|
|
|
-
|
|
|
- `<instance_material symbol="MESH_MATERIAL_${ i }" target="#${ id }" >` +
|
|
|
-
|
|
|
- '<bind_vertex_input semantic="TEXCOORD" input_semantic="TEXCOORD" input_set="0" />' +
|
|
|
-
|
|
|
- '</instance_material>'
|
|
|
- ).join( '' ) +
|
|
|
- '</technique_common></bind_material>' :
|
|
|
- ''
|
|
|
- ) +
|
|
|
-
|
|
|
- '</instance_geometry>';
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- o.children.forEach( c => node += processObject( c ) );
|
|
|
-
|
|
|
- node += '</node>';
|
|
|
-
|
|
|
- return node;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- const geometryInfo = new WeakMap();
|
|
|
- const materialMap = new WeakMap();
|
|
|
- const imageMap = new WeakMap();
|
|
|
- const textures = [];
|
|
|
-
|
|
|
- const libraryImages = [];
|
|
|
- const libraryGeometries = [];
|
|
|
- const libraryEffects = [];
|
|
|
- const libraryMaterials = [];
|
|
|
- const libraryVisualScenes = processObject( object );
|
|
|
-
|
|
|
- const specLink = version === '1.4.1' ? 'http://www.collada.org/2005/11/COLLADASchema' : 'https://www.khronos.org/collada/';
|
|
|
- let dae =
|
|
|
- '<?xml version="1.0" encoding="UTF-8" standalone="no" ?>' +
|
|
|
- `<COLLADA xmlns="${ specLink }" version="${ version }">` +
|
|
|
- '<asset>' +
|
|
|
- (
|
|
|
- '<contributor>' +
|
|
|
- '<authoring_tool>three.js Collada Exporter</authoring_tool>' +
|
|
|
- ( options.author !== null ? `<author>${ options.author }</author>` : '' ) +
|
|
|
- '</contributor>' +
|
|
|
- `<created>${ ( new Date() ).toISOString() }</created>` +
|
|
|
- `<modified>${ ( new Date() ).toISOString() }</modified>` +
|
|
|
- ( options.unitName !== null ? `<unit name="${ options.unitName }" meter="${ options.unitMeter }" />` : '' ) +
|
|
|
- `<up_axis>${ options.upAxis }</up_axis>`
|
|
|
- ) +
|
|
|
- '</asset>';
|
|
|
-
|
|
|
- dae += `<library_images>${ libraryImages.join( '' ) }</library_images>`;
|
|
|
-
|
|
|
- dae += `<library_effects>${ libraryEffects.join( '' ) }</library_effects>`;
|
|
|
-
|
|
|
- dae += `<library_materials>${ libraryMaterials.join( '' ) }</library_materials>`;
|
|
|
-
|
|
|
- dae += `<library_geometries>${ libraryGeometries.join( '' ) }</library_geometries>`;
|
|
|
-
|
|
|
- dae += `<library_visual_scenes><visual_scene id="Scene" name="scene">${ libraryVisualScenes }</visual_scene></library_visual_scenes>`;
|
|
|
-
|
|
|
- dae += '<scene><instance_visual_scene url="#Scene"/></scene>';
|
|
|
-
|
|
|
- dae += '</COLLADA>';
|
|
|
-
|
|
|
- const res = {
|
|
|
- data: format( dae ),
|
|
|
- textures
|
|
|
- };
|
|
|
-
|
|
|
- if ( typeof onDone === 'function' ) {
|
|
|
-
|
|
|
- requestAnimationFrame( () => onDone( res ) );
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- return res;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-export { ColladaExporter };
|
Mr.doob
