three
Version:
JavaScript 3D library
131 lines (72 loc) • 1.96 kB
JavaScript
import { nodeObject, float } from '../../nodes/tsl/TSLBase.js';
import { Loader } from '../Loader.js';
import { FileLoader } from '../../loaders/FileLoader.js';
class NodeLoader extends Loader {
constructor( manager ) {
super( manager );
this.textures = {};
this.nodes = {};
}
load( url, onLoad, onProgress, onError ) {
const loader = new FileLoader( this.manager );
loader.setPath( this.path );
loader.setRequestHeader( this.requestHeader );
loader.setWithCredentials( this.withCredentials );
loader.load( url, ( text ) => {
try {
onLoad( this.parse( JSON.parse( text ) ) );
} catch ( e ) {
if ( onError ) {
onError( e );
} else {
console.error( e );
}
this.manager.itemError( url );
}
}, onProgress, onError );
}
parseNodes( json ) {
const nodes = {};
if ( json !== undefined ) {
for ( const nodeJSON of json ) {
const { uuid, type } = nodeJSON;
nodes[ uuid ] = this.createNodeFromType( type );
nodes[ uuid ].uuid = uuid;
}
const meta = { nodes, textures: this.textures };
for ( const nodeJSON of json ) {
nodeJSON.meta = meta;
const node = nodes[ nodeJSON.uuid ];
node.deserialize( nodeJSON );
delete nodeJSON.meta;
}
}
return nodes;
}
parse( json ) {
const node = this.createNodeFromType( json.type );
node.uuid = json.uuid;
const nodes = this.parseNodes( json.nodes );
const meta = { nodes, textures: this.textures };
json.meta = meta;
node.deserialize( json );
delete json.meta;
return node;
}
setTextures( value ) {
this.textures = value;
return this;
}
setNodes( value ) {
this.nodes = value;
return this;
}
createNodeFromType( type ) {
if ( this.nodes[ type ] === undefined ) {
console.error( 'THREE.NodeLoader: Node type not found:', type );
return float();
}
return nodeObject( new this.nodes[ type ]() );
}
}
export default NodeLoader;