1086 lines
60 KiB
HTML
1086 lines
60 KiB
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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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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>WeightSpline - Cesium Documentation</title>
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<!--[if lt IE 9]>
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<script src="javascript/html5.js"></script>
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<![endif]-->
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<link href="styles/jsdoc-default.css" rel="stylesheet">
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<link href="styles/prism.css" rel="stylesheet">
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</head>
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<body>
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<div id="main">
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<h1 class="page-title">
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<a href="index.html"><img src="Images/CesiumLogo.png" class="cesiumLogo"></a>
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WeightSpline
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<div class="titleCenterer"></div>
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</h1>
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<section>
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<header>
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<article>
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<div class="container-overview">
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<div class="nameContainer">
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<h4 class="name" id="WeightSpline">
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<a href="#WeightSpline" class="doc-link"></a>
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new Cesium.WeightSpline<span class="signature">(options)</span>
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<div class="source-link rightLinks">
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<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WeightSpline.js#L40">Core/WeightSpline.js 40</a>
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</div>
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</h4>
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</div>
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<div class="description">
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A spline that linearly interpolates over an array of weight values used by morph targets.
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</div>
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<table class="params">
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th class="last">Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td class="name"><code>options</code></td>
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<td class="type">
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<span class="param-type">Object</span>
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</td>
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<td class="description last">
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Object with the following properties:
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<table class="params">
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th class="last">Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td class="name"><code>times</code></td>
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<td class="type">
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<span class="param-type">Array.<Number></span>
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</td>
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<td class="description last">
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An array of strictly increasing, unit-less, floating-point times at each point.
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The values are in no way connected to the clock time. They are the parameterization for the curve.</td>
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</tr>
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<tr>
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<td class="name"><code>weights</code></td>
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<td class="type">
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<span class="param-type">Array.<Number></span>
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</td>
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<td class="description last">
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The array of floating-point control weights given. The weights are ordered such
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that all weights for the targets are given in chronological order and order in which they appear in
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the glTF from which the morph targets come. This means for 2 targets, weights = [w(0,0), w(0,1), w(1,0), w(1,1) ...]
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where i and j in w(i,j) are the time indices and target indices, respectively.</td>
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</tr>
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</tbody>
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</table>
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</td>
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</tr>
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</tbody>
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</table>
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<h5>Throws:</h5>
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<ul>
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<li>
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<div class="param-desc">
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<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
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: weights.length must be greater than or equal to 2.
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</div>
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</li>
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<li>
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<div class="param-desc">
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<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
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: times.length must be a factor of weights.length.
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</div>
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</li>
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</ul>
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<dl class="details">
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<h5>Example:</h5>
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<pre><code class="language-javascript">const times = [ 0.0, 1.5, 3.0, 4.5, 6.0 ];
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const weights = [0.0, 1.0, 0.25, 0.75, 0.5, 0.5, 0.75, 0.25, 1.0, 0.0]; //Two targets
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const spline = new Cesium.WeightSpline({
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times : times,
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weights : weights
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});
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const p0 = spline.evaluate(times[0]);</code></pre>
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<h5>See:</h5>
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<ul class="see-list">
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<li><a href="LinearSpline.html">LinearSpline</a></li>
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<li><a href="HermiteSpline.html">HermiteSpline</a></li>
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<li><a href="CatmullRomSpline.html">CatmullRomSpline</a></li>
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<li><a href="QuaternionSpline.html">QuaternionSpline</a></li>
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</ul>
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</dl>
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</div>
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<h3 class="subsection-title">Members</h3>
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<div class="nameContainer">
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<h4 class="name" id="times">
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<a href="#times" class="doc-link"></a>
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<span class="type-signature attribute-readonly">readonly</span> times<span class="type-signature"> : Array.<Number></span>
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<div class="source-link rightLinks">
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<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WeightSpline.js#L73">Core/WeightSpline.js 73</a>
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</div>
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</h4>
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</div>
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<div class="description">
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An array of times for the control weights.
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</div>
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<dl class="details">
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</dl>
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<div class="nameContainer">
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<h4 class="name" id="weights">
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<a href="#weights" class="doc-link"></a>
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<span class="type-signature attribute-readonly">readonly</span> weights<span class="type-signature"> : Array.<Number></span>
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<div class="source-link rightLinks">
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<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WeightSpline.js#L87">Core/WeightSpline.js 87</a>
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</div>
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</h4>
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</div>
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<div class="description">
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An array of floating-point array control weights.
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</div>
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<dl class="details">
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</dl>
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<h3 class="subsection-title">Methods</h3>
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<div class="nameContainer">
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<h4 class="name" id="clampTime">
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<a href="#clampTime" class="doc-link"></a>
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clampTime<span class="signature">(time)</span> → <span class="type-signature returnType">Number</span>
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<div class="source-link rightLinks">
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<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WeightSpline.js#L124">Core/WeightSpline.js 124</a>
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</div>
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</h4>
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</div>
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<div class="description">
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Clamps the given time to the period covered by the spline.
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</div>
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<table class="params">
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th class="last">Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td class="name"><code>time</code></td>
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<td class="type">
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<span class="param-type">Number</span>
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</td>
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<td class="description last">
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The time.</td>
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</tr>
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</tbody>
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</table>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h5>Returns:</h5>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="param-desc">
|
||
|
|
The time, clamped to the animation period.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<dl class="details">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="nameContainer">
|
||
|
|
<h4 class="name" id="evaluate">
|
||
|
|
<a href="#evaluate" class="doc-link"></a>
|
||
|
|
evaluate<span class="signature">(time, <span class="optional">result</span>)</span> → <span class="type-signature returnType">Array.<Number></span>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="source-link rightLinks">
|
||
|
|
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WeightSpline.js#L137">Core/WeightSpline.js 137</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
</h4>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="description">
|
||
|
|
Evaluates the curve at a given time.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<table class="params">
|
||
|
|
<thead>
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<th>Name</th>
|
||
|
|
|
||
|
|
|
||
|
|
<th>Type</th>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<th class="last">Description</th>
|
||
|
|
</tr>
|
||
|
|
</thead>
|
||
|
|
|
||
|
|
<tbody>
|
||
|
|
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<td class="name"><code>time</code></td>
|
||
|
|
|
||
|
|
|
||
|
|
<td class="type">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="param-type">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</td>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<td class="description last">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
The time at which to evaluate the curve.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<td class="name"><code>result</code></td>
|
||
|
|
|
||
|
|
|
||
|
|
<td class="type">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="param-type">Array.<Number></span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</td>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<td class="description last">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="optional">optional</span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
The object onto which to store the result.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
|
||
|
|
</tbody>
|
||
|
|
</table>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h5>Returns:</h5>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="param-desc">
|
||
|
|
The modified result parameter or a new instance of the point on the curve at the given time.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h5>Throws:</h5>
|
||
|
|
<ul>
|
||
|
|
<li>
|
||
|
|
|
||
|
|
<div class="param-desc">
|
||
|
|
|
||
|
|
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
|
||
|
|
|
||
|
|
: time must be in the range <code>[t<sub>0</sub>, t<sub>n</sub>]</code>, where <code>t<sub>0</sub></code>
|
||
|
|
is the first element in the array <code>times</code> and <code>t<sub>n</sub></code> is the last element
|
||
|
|
in the array <code>times</code>.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<dl class="details">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="nameContainer">
|
||
|
|
<h4 class="name" id="findTimeInterval">
|
||
|
|
<a href="#findTimeInterval" class="doc-link"></a>
|
||
|
|
findTimeInterval<span class="signature">(time)</span> → <span class="type-signature returnType">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="source-link rightLinks">
|
||
|
|
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WeightSpline.js#L106">Core/WeightSpline.js 106</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
</h4>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="description">
|
||
|
|
Finds an index <code>i</code> in <code>times</code> such that the parameter
|
||
|
|
<code>time</code> is in the interval <code>[times[i], times[i + 1]]</code>.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<table class="params">
|
||
|
|
<thead>
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<th>Name</th>
|
||
|
|
|
||
|
|
|
||
|
|
<th>Type</th>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<th class="last">Description</th>
|
||
|
|
</tr>
|
||
|
|
</thead>
|
||
|
|
|
||
|
|
<tbody>
|
||
|
|
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<td class="name"><code>time</code></td>
|
||
|
|
|
||
|
|
|
||
|
|
<td class="type">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="param-type">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</td>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<td class="description last">
|
||
|
|
|
||
|
|
The time.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
|
||
|
|
</tbody>
|
||
|
|
</table>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h5>Returns:</h5>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="param-desc">
|
||
|
|
The index for the element at the start of the interval.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h5>Throws:</h5>
|
||
|
|
<ul>
|
||
|
|
<li>
|
||
|
|
|
||
|
|
<div class="param-desc">
|
||
|
|
|
||
|
|
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
|
||
|
|
|
||
|
|
: time must be in the range <code>[t<sub>0</sub>, t<sub>n</sub>]</code>, where <code>t<sub>0</sub></code>
|
||
|
|
is the first element in the array <code>times</code> and <code>t<sub>n</sub></code> is the last element
|
||
|
|
in the array <code>times</code>.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<dl class="details">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="nameContainer">
|
||
|
|
<h4 class="name" id="wrapTime">
|
||
|
|
<a href="#wrapTime" class="doc-link"></a>
|
||
|
|
wrapTime<span class="signature">(time)</span> → <span class="type-signature returnType">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="source-link rightLinks">
|
||
|
|
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WeightSpline.js#L115">Core/WeightSpline.js 115</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
</h4>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="description">
|
||
|
|
Wraps the given time to the period covered by the spline.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<table class="params">
|
||
|
|
<thead>
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<th>Name</th>
|
||
|
|
|
||
|
|
|
||
|
|
<th>Type</th>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<th class="last">Description</th>
|
||
|
|
</tr>
|
||
|
|
</thead>
|
||
|
|
|
||
|
|
<tbody>
|
||
|
|
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<td class="name"><code>time</code></td>
|
||
|
|
|
||
|
|
|
||
|
|
<td class="type">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="param-type">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</td>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<td class="description last">
|
||
|
|
|
||
|
|
The time.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
|
||
|
|
</tbody>
|
||
|
|
</table>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h5>Returns:</h5>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="param-desc">
|
||
|
|
The time, wrapped around to the updated animation.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<dl class="details">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</article>
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
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