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110 lines
3.6 KiB
110 lines
3.6 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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<h1>加载器（[name]）</h1>
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<p class="desc">用于实现加载器的基类。</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] — 加载器将要使用的 [page:LoadingManager loadingManager]。默认为 [page:LoadingManager THREE.DefaultLoadingManager]。
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</p>
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<p>
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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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<h3>[property:String crossOrigin]</h3>
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<p>
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crossOrigin 字符串用于实现 CORS ，以从允许 CORS 的其他域加载url。
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默认为*anonymous*。
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</p>
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<h3>[property:LoadingManager manager]</h3>
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<p>
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加载器要使用的 [page:LoadingManager loadingManager] 。默认为 [page:DefaultLoadingManager] 。
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</p>
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<h3>[property:String path]</h3>
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<p>
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将从中加载资产的基本路径。
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默认为空字符串。
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</p>
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<h3>[property:String resourcePath]</h3>
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<p>
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将从中加载额外资源（例如纹理贴图）的基本路径。
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默认为空字符串。
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</p>
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<h3>[property:Object requestHeader]</h3>
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<p>
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[link:https://developer.mozilla.org/en-US/docs/Glossary/Request_header request header] 在 HTTP 请求中使用。 请参考 [page:.setRequestHeader]。 默认为 *undefined*。
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</p>
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<h2>方法</h2>
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<h3>[method:undefined load]()</h3>
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<p>
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该方法需要被所有具体的加载器来实现。它包含了从后端加载资产的逻辑。
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</p>
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<h3>[method:Promise loadAsync]( [param:String url], [param:Function onProgress] )</h3>
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<p>
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[page:String url] — 一个字符串，包含要加载的文件的路径/URL。<br />
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[page:Function onProgress] — （可选）加载过程中将会被调用的函数。参数将是一个XMLHttpRequest实例，其包含了 .[page:Integer total] （总）字节数和 .[page:Integer loaded] （已加载）字节数。<br />
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</p>
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<p>
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该函数等效于[page:.load]，但返回的是一个 [link:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise Promise]。
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</p>
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<p>
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[page:Function onLoad] 由 [link:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/resolve Promise.resolve] 处理，而 [page:Function onError] 则由 [link:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/reject Promise.reject] 处理。
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</p>
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<h3>[method:undefined parse]()</h3>
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<p>
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该方法需要被所有具体的加载器来实现。它包含了解析资产到 three.js 实体的逻辑。
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</p>
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<h3>[method:this setCrossOrigin]( [param:String crossOrigin] )</h3>
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<p>
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[page:String crossOrigin] — crossOrigin字符串用于实现CORS，以从允许CORS的其它域加载url。
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</p>
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<h3>[method:this setPath]( [param:String path] )</h3>
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<p>
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[page:String path] — 设置资产的基本路径。
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</p>
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<h3>[method:this setResourcePath]( [param:String resourcePath] )</h3>
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<p>
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[page:String resourcePath] — 设置独立资源（如纹理贴图）的基本路径。
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</p>
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<h3>[method:this setRequestHeader]( [param:Object requestHeader] )</h3>
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<p>
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[page:Object requestHeader] - key: 要设置header的名称。 value：要设置header的值。<br /><br />
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设置在 HTTP 请求中使用的 [link:https://developer.mozilla.org/en-US/docs/Glossary/Request_header request header]（请求头）。
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</p>
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<h2>源码</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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