154 lines
3.9 KiB
JavaScript
154 lines
3.9 KiB
JavaScript
import {
|
|
FileLoader,
|
|
Loader,
|
|
LoaderUtils,
|
|
Scene,
|
|
TextureLoader
|
|
} from 'three';
|
|
|
|
import { TGALoader } from '../loaders/TGALoader.js';
|
|
import { ColladaParser } from './collada/ColladaParser.js';
|
|
import { ColladaComposer } from './collada/ColladaComposer.js';
|
|
|
|
/**
|
|
* A loader for the Collada format.
|
|
*
|
|
* The Collada format is very complex so this loader only supports a subset of what
|
|
* is defined in the [official specification](https://www.khronos.org/files/collada_spec_1_5.pdf).
|
|
*
|
|
* Assets with a Z-UP coordinate system are transformed it into Y-UP by a simple rotation.
|
|
* The vertex data are not converted.
|
|
*
|
|
* ```js
|
|
* const loader = new ColladaLoader();
|
|
*
|
|
* const result = await loader.loadAsync( './models/collada/elf/elf.dae' );
|
|
* scene.add( result.scene );
|
|
* ```
|
|
*
|
|
* @augments Loader
|
|
* @three_import import { ColladaLoader } from 'three/addons/loaders/ColladaLoader.js';
|
|
*/
|
|
class ColladaLoader extends Loader {
|
|
|
|
/**
|
|
* Starts loading from the given URL and passes the loaded Collada asset
|
|
* to the `onLoad()` callback.
|
|
*
|
|
* @param {string} url - The path/URL of the file to be loaded. This can also be a data URI.
|
|
* @param {function({scene:Group,animations:Array<AnimationClip>,kinematics:Object})} onLoad - Executed when the loading process has been finished.
|
|
* @param {onProgressCallback} onProgress - Executed while the loading is in progress.
|
|
* @param {onErrorCallback} onError - Executed when errors occur.
|
|
*/
|
|
load( url, onLoad, onProgress, onError ) {
|
|
|
|
const scope = this;
|
|
|
|
const path = ( scope.path === '' ) ? LoaderUtils.extractUrlBase( url ) : scope.path;
|
|
|
|
const loader = new FileLoader( scope.manager );
|
|
loader.setPath( scope.path );
|
|
loader.setRequestHeader( scope.requestHeader );
|
|
loader.setWithCredentials( scope.withCredentials );
|
|
loader.load( url, function ( text ) {
|
|
|
|
try {
|
|
|
|
onLoad( scope.parse( text, path ) );
|
|
|
|
} catch ( e ) {
|
|
|
|
if ( onError ) {
|
|
|
|
onError( e );
|
|
|
|
} else {
|
|
|
|
console.error( e );
|
|
|
|
}
|
|
|
|
scope.manager.itemError( url );
|
|
|
|
}
|
|
|
|
}, onProgress, onError );
|
|
|
|
}
|
|
|
|
/**
|
|
* Parses the given Collada data and returns a result object holding the parsed scene,
|
|
* an array of animation clips and kinematics.
|
|
*
|
|
* @param {string} text - The raw Collada data as a string.
|
|
* @param {string} [path] - The asset path.
|
|
* @return {?{scene:Group,animations:Array<AnimationClip>,kinematics:Object}} An object representing the parsed asset.
|
|
*/
|
|
parse( text, path ) {
|
|
|
|
if ( text.length === 0 ) {
|
|
|
|
return { scene: new Scene() };
|
|
|
|
}
|
|
|
|
// Parse XML to library data
|
|
const parser = new ColladaParser();
|
|
const parseResult = parser.parse( text );
|
|
|
|
if ( parseResult === null ) {
|
|
|
|
return null;
|
|
|
|
}
|
|
|
|
const { library, asset, collada } = parseResult;
|
|
|
|
// Setup texture loaders
|
|
const textureLoader = new TextureLoader( this.manager );
|
|
textureLoader.setPath( this.resourcePath || path ).setCrossOrigin( this.crossOrigin );
|
|
|
|
let tgaLoader;
|
|
|
|
if ( TGALoader ) {
|
|
|
|
tgaLoader = new TGALoader( this.manager );
|
|
tgaLoader.setPath( this.resourcePath || path );
|
|
|
|
}
|
|
|
|
// Compose Three.js objects from library data
|
|
const composer = new ColladaComposer( library, collada, textureLoader, tgaLoader );
|
|
const { scene, animations, kinematics } = composer.compose();
|
|
|
|
scene.animations = animations;
|
|
|
|
// Handle coordinate system conversion
|
|
if ( asset.upAxis === 'Z_UP' ) {
|
|
|
|
console.warn( 'THREE.ColladaLoader: You are loading an asset with a Z-UP coordinate system. The loader just rotates the asset to transform it into Y-UP. The vertex data are not converted, see #24289.' );
|
|
scene.rotation.set( - Math.PI / 2, 0, 0 );
|
|
|
|
}
|
|
|
|
// Apply unit scale
|
|
scene.scale.multiplyScalar( asset.unit );
|
|
|
|
return {
|
|
get animations() {
|
|
|
|
console.warn( 'THREE.ColladaLoader: Please access animations over scene.animations now.' );
|
|
return animations;
|
|
|
|
},
|
|
kinematics: kinematics,
|
|
library: library,
|
|
scene: scene
|
|
};
|
|
|
|
}
|
|
|
|
}
|
|
|
|
export { ColladaLoader };
|