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148 lines
4.8 KiB
148 lines
4.8 KiB
2 years ago
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<!DOCTYPE html>
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<html lang="zh">
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<head>
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<meta charset="utf-8" />
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<base href="../../../" />
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<script src="page.js"></script>
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<link type="text/css" rel="stylesheet" href="page.css" />
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</head>
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<body>
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[page:Loader] →
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<h1>[name]</h1>
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<p class="desc">
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A loader for loading a JSON resource in the [link:https://github.com/mrdoob/three.js/wiki/JSON-Object-Scene-format-4 JSON Object/Scene format].<br /><br />
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此加载器内部使用[page:FileLoader]进行加载文件。
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</p>
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<h2>代码示例</h2>
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<code>
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const loader = new THREE.ObjectLoader();
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loader.load(
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// 资源的URL
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"models/json/example.json",
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// onLoad回调
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// Here the loaded data is assumed to be an object
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function ( obj ) {
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// Add the loaded object to the scene
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scene.add( obj );
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},
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// onProgress回调
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function ( xhr ) {
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console.log( (xhr.loaded / xhr.total * 100) + '% loaded' );
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},
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// onError回调
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function ( err ) {
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console.error( 'An error happened' );
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}
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);
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// 或者，解析先前加载的JSON结构
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const object = loader.parse( a_json_object );
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scene.add( object );
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</code>
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<h2>例子</h2>
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<p>
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[example:webgl_materials_lightmap WebGL / materials / lightmap]
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</p>
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<h2>构造函数</h2>
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<h3>[name]( [param:LoadingManager manager] )</h3>
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<p>
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[page:LoadingManager manager] — 加载器所使用的[page:LoadingManager loadingManager]，默认值为[page:LoadingManager THREE.DefaultLoadingManager].<br /><br />
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创建一个新的[name].
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</p>
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<h2>属性</h2>
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<p>共有属性请参见其基类[page:Loader]。</p>
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<h2>方法</h2>
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<p>共有方法请参见其基类[page:Loader]。</p>
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<h3>[method:undefined load]( [param:String url], [param:Function onLoad], [param:Function onProgress], [param:Function onError] )</h3>
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<p>
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[page:String url] — 文件的URL或者路径，也可以为
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[link:https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs Data URI].<br />
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[page:Function onLoad] — 加载完成时将调用。回调参数为将要加载的[page:Object3D object].<br />
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[page:Function onProgress] — 将在加载过程中进行调用。参数为XMLHttpRequest实例，实例包含[page:Integer total]和[page:Integer loaded]字节。<br />
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[page:Function onError] — 在加载错误时被调用。<br />
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</p>
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<p>
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从URL中进行加载，并将被解析的响应内容传递给onLoad。
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</p>
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<h3>[method:Object3D parse]( [param:Object json], [param:Function onLoad] )</h3>
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<p>
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[page:Object json] — 必选参数，需要被解析的JSON源。<br /><br />
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[page:Function onLoad] — 当解析完成时被调用，其中参数被解析为[page:Object3D object].<br /><br />
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解析一个<em>JSON</em>结构，并返回一个threejs对象.
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内部使用[page:.load]()进行加载, 但也可以直接用于解析先前加载的JSON结构。
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</p>
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<h3>[method:Object parseGeometries]( [param:Object json] )</h3>
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<p>
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[page:Object json] — 必选参数，需要被解析的JSON源。<br /><br />
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此函数以JSON结构，用[page:.parse]()去解析[page:BufferGeometry geometries]。
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</p>
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<h3>[method:Object parseMaterials]( [param:Object json] )</h3>
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<p>
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[page:Object json] — 必选参数，需要被解析的JSON源。<br /><br />
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此函数通过[page:.parse()来使用[page:MaterialLoader]，以解析JSON结构中任意材质。
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</p>
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<h3>[method:Object parseAnimations]( [param:Object json] )</h3>
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<p>
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[page:Object json] — 必选参数，需要被解析的JSON源。<br /><br />
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此函数通过[page:.parse]()来使用[page:AnimationClip.parse]()， 以解析JSON结构中任意动画。
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</p>
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<h3>[method:Object parseImages]( [param:Object json] )</h3>
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<p>
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[page:Object json] — 必选参数，需要被解析的JSON源。<br /><br />
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此函数通过[page:.parse]()来使用[page:ImageLoader]， 以解析JSON结构中任意图片。
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</p>
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<h3>[method:Object parseTextures]( [param:Object json] )</h3>
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<p>
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[page:Object json] — 必选参数，需要被解析的JSON源。<br /><br />
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此函数通过[page:.parse]()来解析JSON结构中任意纹理。
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</p>
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<h3>[method:Object3D parseObject]( [param:Object json], [param:BufferGeometry geometries], [param:Material materials], [param:AnimationClip animations] )</h3>
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<p>
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[page:Object json] — 必选参数，需要被解析的JSON源。<br />
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[page:BufferGeometry geometries] — required. The geometries of the JSON.<br />
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[page:Material materials] — required. The materials of the JSON.<br />
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[page:AnimationClip animations] — required. The animations of the JSON.<br /><br />
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此函数通过[page:.parse]()来解析JSON结构中任意对象。
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</p>
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<h2>源</h2>
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<p>
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[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
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</p>
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</body>
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</html>
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