You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
149 lines
2.7 KiB
JavaScript
149 lines
2.7 KiB
JavaScript
2 weeks ago
|
/**
|
||
|
|
* @author Don McCurdy / https://www.donmccurdy.com
|
||
|
|
*/
|
||
|
|
|
||
|
|
THREE.DRACOLoader = function ( manager ) {
|
||
|
|
|
||
|
|
THREE.Loader.call( this, manager );
|
||
|
|
|
||
|
|
this.decoderType = typeof WebAssembly !== 'object' || this.workerLimit === 0 ? 'js' : 'wasm';
|
||
|
|
this.decoderConfig = {};
|
||
|
|
this.decoderBinary = null;
|
||
|
|
this.decoderPending = null;
|
||
|
|
|
||
|
|
this.workerLimit = 4;
|
||
|
|
this.workerPool = [];
|
||
|
|
this.workerNextTaskID = 1;
|
||
|
|
this.workerSourceURL = '';
|
||
|
|
|
||
|
|
this.defaultAttributeIDs = {
|
||
|
|
position: 'POSITION',
|
||
|
|
normal: 'NORMAL',
|
||
|
|
color: 'COLOR',
|
||
|
|
uv: 'TEX_COORD'
|
||
|
|
};
|
||
|
|
this.defaultAttributeTypes = {
|
||
|
|
position: 'Float32Array',
|
||
|
|
normal: 'Float32Array',
|
||
|
|
color: 'Float32Array',
|
||
|
|
uv: 'Float32Array'
|
||
|
|
};
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
THREE.DRACOLoader.prototype = Object.assign( Object.create( THREE.Loader.prototype ), {
|
||
|
|
|
||
|
|
constructor: THREE.DRACOLoader,
|
||
|
|
|
||
|
|
setDecoderType: function ( type ) {
|
||
|
|
|
||
|
|
this.decoderType = type;
|
||
|
|
return this;
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
setWorkerLimit: function ( workerLimit ) {
|
||
|
|
|
||
|
|
this.workerLimit = workerLimit;
|
||
|
|
return this;
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
setVerbosity: function ( level ) {
|
||
|
|
|
||
|
|
this.verbosity = level;
|
||
|
|
return this;
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
setDecoderConfig: function ( config ) {
|
||
|
|
|
||
|
|
this.decoderConfig = config;
|
||
|
|
return this;
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
setDecoderPath: function ( path ) {
|
||
|
|
|
||
|
|
this.decoderPath = path;
|
||
|
|
return this;
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
preload: function () {
|
||
|
|
|
||
|
|
this._initDecoder();
|
||
|
|
return this;
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
_initDecoder: function () {
|
||
|
|
|
||
|
|
if ( this.decoderPending ) return this.decoderPending;
|
||
|
|
|
||
|
|
const useJS = this.decoderType === 'js';
|
||
|
|
const librariesPending = [];
|
||
|
|
|
||
|
|
if ( useJS ) {
|
||
|
|
|
||
|
|
librariesPending.push( this._loadLibrary( 'draco_decoder.js', 'text' ) );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
librariesPending.push( this._loadLibrary( 'draco_wasm_wrapper.js', 'text' ) );
|
||
|
|
librariesPending.push( this._loadLibrary( 'draco_decoder.wasm', 'arraybuffer' ) );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
this.decoderPending = Promise.all( librariesPending )
|
||
|
|
.then( ( libraries ) => {
|
||
|
|
|
||
|
|
const jsContent = libraries[ 0 ];
|
||
|
|
|
||
|
|
if ( useJS ) {
|
||
|
|
|
||
|
|
this.decoderSourceURL = URL.createObjectURL( new Blob( [ jsContent ], { type: 'application/javascript' } ) );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
this.decoderSourceURL = URL.createObjectURL( new Blob( [ jsContent ], { type: 'application/javascript' } ) );
|
||
|
|
this.decoderConfig.wasmBinary = libraries[ 1 ];
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
return this.decoderPending;
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
_loadLibrary: function ( url, responseType ) {
|
||
|
|
|
||
|
|
const loader = new THREE.FileLoader( this.manager );
|
||
|
|
loader.setPath( this.decoderPath );
|
||
|
|
loader.setResponseType( responseType );
|
||
|
|
loader.setWithCredentials( this.withCredentials );
|
||
|
|
|
||
|
|
return new Promise( ( resolve, reject ) => {
|
||
|
|
|
||
|
|
loader.load( url, resolve, undefined, reject );
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
dispose: function () {
|
||
|
|
|
||
|
|
this.workerPool.length = 0;
|
||
|
|
|
||
|
|
if ( this.decoderSourceURL !== '' ) {
|
||
|
|
|
||
|
|
URL.revokeObjectURL( this.decoderSourceURL );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return this;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} );
|