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2022-07-05 16:56:29 +08:00
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<title>PositionPropertyArray - Cesium Documentation</title>
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PositionPropertyArray
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</h1>
<section>
<header>
</header>
<article>
<div class="container-overview">
<div class="nameContainer">
<h4 class="name" id="PositionPropertyArray">
<a href="#PositionPropertyArray" class="doc-link"></a>
new Cesium.PositionPropertyArray<span class="signature">(<span class="optional">value</span>, <span class="optional">referenceFrame</span>)</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PositionPropertyArray.js#L19">DataSources/PositionPropertyArray.js 19</a>
</div>
</h4>
</div>
<div class="description">
A <a href="Property.html"><code>Property</code></a> whose value is an array whose items are the computed value
of other PositionProperty instances.
</div>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Default</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>value</code></td>
<td class="type">
<span class="param-type">Array.&lt;<a href="Property.html">Property</a>></span>
</td>
<td class="default">
</td>
<td class="description last">
<span class="optional">optional</span>
An array of Property instances.</td>
</tr>
<tr>
<td class="name"><code>referenceFrame</code></td>
<td class="type">
<span class="param-type"><a href="global.html#ReferenceFrame">ReferenceFrame</a></span>
</td>
<td class="default">
<code class="language-javascript">ReferenceFrame.FIXED</code>
</td>
<td class="description last">
<span class="optional">optional</span>
The reference frame in which the position is defined.</td>
</tr>
</tbody>
</table>
<dl class="details">
</dl>
</div>
<h3 class="subsection-title">Members</h3>
<div class="nameContainer">
<h4 class="name" id="definitionChanged">
<a href="#definitionChanged" class="doc-link"></a>
<span class="type-signature attribute-readonly">readonly</span> definitionChanged<span class="type-signature"> : <a href="Event.html">Event</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PositionPropertyArray.js#L61">DataSources/PositionPropertyArray.js 61</a>
</div>
</h4>
</div>
<div class="description">
Gets the event that is raised whenever the definition of this property changes.
The definition is changed whenever setValue is called with data different
than the current value or one of the properties in the array also changes.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="isConstant">
<a href="#isConstant" class="doc-link"></a>
<span class="type-signature attribute-readonly">readonly</span> isConstant<span class="type-signature"> : Boolean</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PositionPropertyArray.js#L36">DataSources/PositionPropertyArray.js 36</a>
</div>
</h4>
</div>
<div class="description">
Gets a value indicating if this property is constant. This property
is considered constant if all property items in the array are constant.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="referenceFrame">
<a href="#referenceFrame" class="doc-link"></a>
referenceFrame<span class="type-signature"> : <a href="global.html#ReferenceFrame">ReferenceFrame</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PositionPropertyArray.js#L72">DataSources/PositionPropertyArray.js 72</a>
</div>
</h4>
</div>
<div class="description">
Gets the reference frame in which the position is defined.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">ReferenceFrame.FIXED;</code>
</dl>
<h3 class="subsection-title">Methods</h3>
<div class="nameContainer">
<h4 class="name" id="equals">
<a href="#equals" class="doc-link"></a>
equals<span class="signature">(<span class="optional">other</span>)</span> &rarr; <span class="type-signature returnType">Boolean</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PositionPropertyArray.js#L175">DataSources/PositionPropertyArray.js 175</a>
</div>
</h4>
</div>
<div class="description">
Compares this property to the provided property and returns
<code>true</code> if they are equal, <code>false</code> otherwise.
</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>other</code></td>
<td class="type">
<span class="param-type"><a href="Property.html">Property</a></span>
</td>
<td class="description last">
<span class="optional">optional</span>
The other property.</td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="param-desc">
<code>true</code> if left and right are equal, <code>false</code> otherwise.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="getValue">
<a href="#getValue" class="doc-link"></a>
getValue<span class="signature">(time, <span class="optional">result</span>)</span> &rarr; <span class="type-signature returnType">Array.&lt;<a href="Cartesian3.html">Cartesian3</a>></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PositionPropertyArray.js#L86">DataSources/PositionPropertyArray.js 86</a>
</div>
</h4>
</div>
<div class="description">
Gets the value of the property.
</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"><a href="JulianDate.html">JulianDate</a></span>
</td>
<td class="description last">
The time for which to retrieve the value.</td>
</tr>
<tr>
<td class="name"><code>result</code></td>
<td class="type">
<span class="param-type">Array.&lt;<a href="Cartesian3.html">Cartesian3</a>></span>
</td>
<td class="description last">
<span class="optional">optional</span>
The object to store the value into, if omitted, a new instance is created and returned.</td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="param-desc">
The modified result parameter or a new instance if the result parameter was not supplied.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="getValueInReferenceFrame">
<a href="#getValueInReferenceFrame" class="doc-link"></a>
getValueInReferenceFrame<span class="signature">(time, referenceFrame, <span class="optional">result</span>)</span> &rarr; <span class="type-signature returnType">Array.&lt;<a href="Cartesian3.html">Cartesian3</a>></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PositionPropertyArray.js#L98">DataSources/PositionPropertyArray.js 98</a>
</div>
</h4>
</div>
<div class="description">
Gets the value of the property at the provided time and in the provided reference frame.
</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"><a href="JulianDate.html">JulianDate</a></span>
</td>
<td class="description last">
The time for which to retrieve the value.</td>
</tr>
<tr>
<td class="name"><code>referenceFrame</code></td>
<td class="type">
<span class="param-type"><a href="global.html#ReferenceFrame">ReferenceFrame</a></span>
</td>
<td class="description last">
The desired referenceFrame of the result.</td>
</tr>
<tr>
<td class="name"><code>result</code></td>
<td class="type">
<span class="param-type">Array.&lt;<a href="Cartesian3.html">Cartesian3</a>></span>
</td>
<td class="description last">
<span class="optional">optional</span>
The object to store the value into, if omitted, a new instance is created and returned.</td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="param-desc">
The modified result parameter or a new instance if the result parameter was not supplied.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="setValue">
<a href="#setValue" class="doc-link"></a>
setValue<span class="signature">(value)</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PositionPropertyArray.js#L145">DataSources/PositionPropertyArray.js 145</a>
</div>
</h4>
</div>
<div class="description">
Sets the value of the property.
</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>value</code></td>
<td class="type">
<span class="param-type">Array.&lt;<a href="Property.html">Property</a>></span>
</td>
<td class="description last">
An array of Property instances.</td>
</tr>
</tbody>
</table>
<dl class="details">
</dl>
</article>
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