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113 lines
2.5 KiB
113 lines
2.5 KiB
3 years ago
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<!DOCTYPE html>
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<html lang="en">
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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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Buffered scene graph property that allows weighted accumulation; used internally.
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</p>
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<h2>Constructor</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>Properties</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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Buffer with size [page:PropertyMixer valueSize] * 4. <br /><br />
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This has the layout: [ incoming | accu0 | accu1 | orig ]<br /><br />
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Interpolators can use .buffer as their .result and the data then goes to 'incoming'.
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'accu0' and 'accu1' are used frame-interleaved for the cumulative result and
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are compared to detect changes. 'orig' stores the original state of the property.
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</p>
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<h3>[property:Number cumulativeWeight]</h3>
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<p>
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Default is `0`.
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</p>
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<h3>[property:Number cumulativeWeightAdditive]</h3>
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<p>
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Default is `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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Default is `0`.
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</p>
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<h3>[property:Number useCount]</h3>
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<p>
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Default is `0`.
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</p>
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<h2>Methods</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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Accumulate data in [page:PropertyMixer.buffer buffer][accuIndex] 'incoming' region into 'accu[i]'.<br />
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If weight is `0` this does nothing.
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</p>
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<h3>[method:undefined accumulateAdditive]( [param:Number weight] )</h3>
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<p>
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Accumulate data in the 'incoming' region into 'add'.<br />
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If weight is `0` this does nothing.
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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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Apply the state of [page:PropertyMixer.buffer buffer] 'accu[i]' to the binding when accus differ.
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</p>
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<h3>[method:undefined saveOriginalState]( )</h3>
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<p>
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Remember the state of the bound property and copy it to both accus.
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</p>
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<h3>[method:undefined restoreOriginalState]( )</h3>
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<p>
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Apply the state previously taken via 'saveOriginalState' to the binding.
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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/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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