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108 lines
3.5 KiB
108 lines
3.5 KiB
3 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">A loader for loading a <em>.prwm</em> resource.<br />
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Packed Raw WebGL Model is an open-source binary file format for nD geometries specifically designed for
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JavaScript and WebGL with a strong focus on fast parsing (from 1ms to 0.1ms in Chrome 59
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on a MBP Late 2013). The parsing of PRWM file is especially fast when the endianness of the file is
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the same as the endianness of the client platform. More information
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on this <a href="https://github.com/kchapelier/PRWM">here</a>.
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</p>
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<h2>代码示例</h2>
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<code>
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// instantiate a loader
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const loader = new PRWMLoader();
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// load a resource
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loader.load(
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// resource URL
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'models/nefertiti.le.prwm',
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// called when resource is loaded
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function ( bufferGeometry ) {
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const object = new THREE.Mesh( bufferGeometry, new THREE.MeshNormalMaterial() );
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scene.add( object );
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},
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// called when loading is in progresses
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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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// called when loading has errors
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function ( error ) {
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console.log( 'An error happened' );
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}
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);
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</code>
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<h2>例子</h2>
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<p>
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[example:webgl_loader_prwm]
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</p>
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<h2>Constructor</h2>
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<h3>[name]( [param:LoadingManager manager] )</h3>
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<p>
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[page:LoadingManager manager] — The [page:LoadingManager loadingManager] for the loader to use. Default is [page:LoadingManager THREE.DefaultLoadingManager].
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</p>
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<p>
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Creates a new [name].
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</p>
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<h2>Properties</h2>
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<p>See the base [page:Loader] class for common properties.</p>
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<h2>Methods</h2>
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<p>See the base [page:Loader] class for common methods.</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] — A string containing the path/URL of the <em>.prwm</em> file. Any <em>*</em> character in the URL will be automatically replaced by <em>le</em> or <em>be</em> depending on the platform endianness.<br />
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[page:Function onLoad] — (optional) A function to be called after the loading is successfully completed. The function receives the loaded [page:BufferGeometry] as an argument.<br />
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[page:Function onProgress] — (optional) A function to be called while the loading is in progress. The function receives a XMLHttpRequest instance, which contains [page:Integer total] and [page:Integer loaded] bytes.<br />
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[page:Function onError] — (optional) A function to be called if an error occurs during loading. The function receives error as an argument.<br />
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</p>
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<p>
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Begin loading from url and call onLoad with the parsed response content.
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</p>
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<h3>[method:BufferGeometry parse]( [param:ArrayBuffer arrayBuffer] )</h3>
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<p>
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[page:ArrayBuffer arrayBuffer] — ArrayBuffer containing the <em>prwm</em> data.
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</p>
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<p>
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Parse a <em>prwm</em> file passed as an ArrayBuffer and directly return an instance of [page:BufferGeometry].
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</p>
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<h3>PRWMLoader.isBigEndianPlatform( )</h3>
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<p>
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Return true if the endianness of the platform is Big Endian, false otherwise.
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</p>
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<h2>Source</h2>
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<p>
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[link:https://github.com/mrdoob/three.js/blob/master/examples/jsm/loaders/PRWMLoader.js examples/jsm/loaders/PRWMLoader.js]
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</p>
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</body>
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</html>
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