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99 lines
2.1 KiB
99 lines
2.1 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>[name]</h1>
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<p class="desc">
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允许加权累加的缓冲场景图属性，内部使用
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</p>
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<h2>构造器</h2>
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<h3>[name]( [param:PropertyBinding binding], [param:String typeName], [param:Number valueSize] )</h3>
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<p>
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-- binding <br />
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-- typeName <br />
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-- valueSize <br />
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</p>
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<h2>属性</h2>
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<h3>[property:PropertyBinding binding]</h3>
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<p>
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</p>
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<h3>[property:TypedArray buffer]</h3>
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<p>
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大小为 4 * [page:PropertyMixer valueSize] 的缓冲区 <br /><br />
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布局为: [ incoming | accu0 | accu1 | orig ]<br /><br />
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插值器可使用 .buffer 作为 .result 且数据会进入'incoming'区.
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'accu0'和'accu1'用于按帧交错累加‘incoming’中的数据并进行比较以侦测变化。'orig'存储着属性的原始状态。
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</p>
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<h3>[property:Number cumulativeWeight]</h3>
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<p>
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默认值是0
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</p>
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<h3>[property:Number valueSize]</h3>
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<p>
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</p>
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<h3>[property:Number referenceCount]</h3>
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<p>
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默认值是0
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</p>
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<h3>[property:Number useCount]</h3>
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<p>
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默认值是0
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</p>
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<h2>方法</h2>
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<h3>[method:undefined accumulate]( [param:Number accuIndex], [param:Number weight] )</h3>
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<p>
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将[page:PropertyMixer.buffer buffer][accuIndex]中'incoming'区的数据累加到'accu[i]'区中。<br />
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如果权值为0，则什么都不做。
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</p>
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<h3>[method:undefined apply]( [param:Number accuIndex] )</h3>
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<p>
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当累加值不同时，将[page:PropertyMixer.buffer buffer] 'accu[i]区的状态应用于绑定.
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</p>
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<h3>[method:undefined saveOriginalState]( )</h3>
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<p>
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记住绑定属性的状态并复制到两个'accu'区中.
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</p>
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<h3>[method:undefined restoreOriginalState]( )</h3>
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<p>
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将预先通过'saveOriginalState'方法取得的状态应用于绑定。
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</p>
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<h2>方法</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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