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+/**
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+ * @author Luis Fraguada / https://github.com/fraguada
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+ */
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+
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+import {
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+ BufferAttribute,
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+ BufferGeometry,
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+ FileLoader,
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+ Loader
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+} from "../../../build/three.module.js";
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+
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+var Rhino3dmLoader = function ( manager ) {
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+
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+ Loader.call( this, manager );
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+
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+ this.libraryPath = '';
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+ this.libraryPending = null;
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+ this.libraryBinary = null;
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+
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+};
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+
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+Rhino3dmLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
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+
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+ constructor: Rhino3dmLoader,
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+
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+ setLibraryPath: function ( path ) {
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+
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+ this.libraryPath = path;
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+
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+ return this;
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+
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+ },
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+
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+ load: function ( url, onLoad, onProgress, onError ) {
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+
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+ var scope = this;
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+
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+ var path = ( this.path !== undefined ) ? this.path : LoaderUtils.extractUrlBase( url );
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+
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+ var loader = new FileLoader( scope.manager );
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+
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+ loader.load( url, function ( text ) {
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+
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+ try {
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+
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+ scope.parse( text, path, onLoad, onError );
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+
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+ } catch ( e ) {
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+
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+ if ( onError !== undefined ) {
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+
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+ onError( e );
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+
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+ } else {
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+
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+ throw e;
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+
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+ }
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+
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+ }
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+
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+ }, onProgress, onError );
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+
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+ },
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+
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+ parse: function ( ) {
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+
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+ // parsing logic goes here
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+ console.log('3dm parsing');
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+
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+ },
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+
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+ _initLibrary: function () {
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+
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+ if ( ! this.libraryPending ) {
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+
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+ // Load transcoder wrapper.
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+ var jsLoader = new FileLoader( this.manager );
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+ jsLoader.setPath( this.transcoderPath );
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+ var jsContent = new Promise( ( resolve, reject ) => {
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+
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+ jsLoader.load( 'rhino3dm.js', resolve, undefined, reject );
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+
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+ } );
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+
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+ // Load transcoder WASM binary.
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+ var binaryLoader = new FileLoader( this.manager );
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+ binaryLoader.setPath( this.transcoderPath );
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+ binaryLoader.setResponseType( 'arraybuffer' );
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+ var binaryContent = new Promise( ( resolve, reject ) => {
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+
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+ binaryLoader.load( 'rhino3dm.wasm', resolve, undefined, reject );
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+
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+ } );
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+
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+ this.libraryPending = Promise.all( [ jsContent, binaryContent ] )
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+ .then( ( [ jsContent, binaryContent ] ) => {
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+
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+ var fn = Rhino3dmLoader.Rhino3dmWorker.toString();
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+
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+ var body = [
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+ '/* rhino3dm.js */',
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+ jsContent,
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+ '/* worker */',
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+ fn.substring( fn.indexOf( '{' ) + 1, fn.lastIndexOf( '}' ) )
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+ ].join( '\n' );
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+
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+ this.workerSourceURL = URL.createObjectURL( new Blob( [ body ] ) );
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+ this.libraryBinary = binaryContent;
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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 this.libraryPending;
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+
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+ }
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+} );
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+
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+/* WEB WORKER */
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+
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+Rhino3dmLoader.Rhino3dmWorker = function () {
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+
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+ var libraryConfig;
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+ var libraryPending;
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+
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+ onmessage = function ( e ) {
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+
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+ var message = e.data;
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+
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+ switch ( message.type ) {
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+
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+ case 'init':
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+ libraryPending = new Promise( function ( resolve/*, reject*/ ) {
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+
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+ libraryPending.onModuleLoaded = function ( draco ) {
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+
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+ // Module is Promise-like. Wrap before resolving to avoid loop.
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+ resolve( { rhino3dm: rhino3dm } );
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+
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+ };
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+
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+ DracoDecoderModule( decoderConfig );
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+
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+ } );
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+ break;
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+ case 'decode':
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+ break;
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+ }
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+ }
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+
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+ function init( wasmBinary ) {
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+
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+ var rhino3dmModule;
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+ transcoderPending = new Promise( ( resolve ) => {
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+
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+ rhino3dmModule = { wasmBinary, onRuntimeInitialized: resolve };
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+ BASIS( rhino3dmModule );
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+
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+ } ).then( () => {
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+
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+ var { BasisFile, initializeBasis } = rhino3dmModule;
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+
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+ _BasisFile = BasisFile;
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+
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+ initializeBasis();
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+
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+ } );
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+
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+ }
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+
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+};
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+
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+export { Rhino3dmLoader };
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Luis Fraguada