{ json = JSON.parse( text ); } catch ( e ) { throw new Error( 'THREE.ObjectLoader: Can\'t parse ' + url + '. ' + e.message ); } const metadata = json.metadata; if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) { throw new Error( 'THREE.ObjectLoader: Can\'t load ' + url ); } return await scope.parseAsync( json ); } /** * Parses the given JSON. This is used internally by {@link ObjectLoader#load} * but can also be used directly to parse a previously loaded JSON structure. * * @param {Object} json - The serialized 3D object. * @param {onLoad} onLoad - Executed when all resources (e.g. textures) have been fully loaded. * @return {Object3D} The parsed 3D object. */ parse( json, onLoad ) { const animations = this.parseAnimations( json.animations ); const shapes = this.parseShapes( json.shapes ); const geometries = this.parseGeometries( json.geometries, shapes ); const images = this.parseImages( json.images, function () { if ( onLoad !== undefined ) onLoad( object ); } ); const textures = this.parseTextures( json.textures, images ); const materials = this.parseMaterials( json.materials, textures ); const object = this.parseObject( json.object, geometries, materials, textures, animations ); const skeletons = this.parseSkeletons( json.skeletons, object ); this.bindSkeletons( object, skeletons ); this.bindLightTargets( object ); // if ( onLoad !== undefined ) { let hasImages = false; for ( const uuid in images ) { if ( images[ uuid ].data instanceof HTMLImageElement ) { hasImages = true; break; } } if ( hasImages === false ) onLoad( object ); } return object; } /** * Async version of {@link ObjectLoader#parse}. * * @param {Object} json - The serialized 3D object. * @return {Promise} A Promise that resolves with the parsed 3D object. */ async parseAsync( json ) { const animations = this.parseAnimations( json.animations ); const shapes = this.parseShapes( json.shapes ); const geometries = this.parseGeometries( json.geometries, shapes ); const images = await this.parseImagesAsync( json.images ); const textures = this.parseTextures( json.textures, images ); const materials = this.parseMaterials( json.materials, textures ); const object = this.parseObject( json.object, geometries, materials, textures, animations ); const skeletons = this.parseSkeletons( json.skeletons, object ); this.bindSkeletons( object, skeletons ); this.bindLightTargets( object ); return object; } /** * Registers the given geometry at the internal * geometry library. * * @static * @param {string} type - The geometry type. * @param {BufferGeometry.constructor} geometryClass - The geometry class. */ static registerGeometry( type, geometryClass ) { _customGeometries[ type ] = geometryClass; } // internals parseShapes( json ) { const shapes = {}; if ( json !== undefined ) { for ( let i = 0, l = json.length; i < l; i ++ ) { const shape = new Shape().fromJSON( json[ i ] ); shapes[ shape.uuid ] = shape; } } return shapes; } parseSkeletons( json, object ) { const skeletons = {}; const bones = {}; // generate bone lookup table object.traverse( function ( child ) { if ( child.isBone ) bones[ child.uuid ] = child; } ); // create skeletons if ( json !== undefined ) { for ( let i = 0, l = json.length; i < l; i ++ ) { const skeleton = new Skeleton().fromJSON( json[ i ], bones ); skeletons[ skeleton.uuid ] = skeleton; } } return skeletons; } parseGeometries( json, shapes ) { const geometries = {}; if ( json !== undefined ) { const bufferGeometryLoader = new BufferGeometryLoader(); for ( let i = 0, l = json.length; i < l; i ++ ) { let geometry; const data = json[ i ]; switch ( data.type ) { case 'BufferGeometry': case 'InstancedBufferGeometry': geometry = bufferGeometryLoader.parse( data ); break; default: if ( data.type in Geometries ) { geometry = Geometries[ data.type ].fromJSON( data, shapes ); } else if ( data.type in _customGeometries ) { geometry = _customGeometries[ data.type ].fromJSON( data, shapes ); } else { warn( `ObjectLoader: Unknown geometry type "${ data.type }". Use .registerGeometry() before starting the deserialization process.` ); } } geometry.uuid = data.uuid; if ( data.name !== undefined ) geometry.name = data.name; if ( data.userData !== undefined ) geometry.userData = data.userData; geometries[ data.uuid ] = geometry; } } return geometries; } parseMaterials( json, textures ) { const cache = {}; // MultiMaterial const materials = {}; if ( json !== undefined ) { const loader = new Mater