qd-changjing/public/static/Build/Documentation/DataSourceDisplay.html

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2022-07-05 16:56:29 +08:00
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<title>DataSourceDisplay - Cesium Documentation</title>
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<h1 class="page-title">
<a href="index.html"><img src="Images/CesiumLogo.png" class="cesiumLogo"></a>
DataSourceDisplay
<div class="titleCenterer"></div>
</h1>
<section>
<header>
</header>
<article>
<div class="container-overview">
<div class="nameContainer">
<h4 class="name" id="DataSourceDisplay">
<a href="#DataSourceDisplay" class="doc-link"></a>
new Cesium.DataSourceDisplay<span class="signature">(options)</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/DataSourceDisplay.js#L35">DataSources/DataSourceDisplay.js 35</a>
</div>
</h4>
</div>
<div class="description">
Visualizes a collection of <a href="DataSource.html"><code>DataSource</code></a> instances.
</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>options</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="description last">
Object with the following properties:
<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>scene</code></td>
<td class="type">
<span class="param-type"><a href="Scene.html">Scene</a></span>
</td>
<td class="default">
</td>
<td class="description last">
The scene in which to display the data.</td>
</tr>
<tr>
<td class="name"><code>dataSourceCollection</code></td>
<td class="type">
<span class="param-type"><a href="DataSourceCollection.html">DataSourceCollection</a></span>
</td>
<td class="default">
</td>
<td class="description last">
The data sources to display.</td>
</tr>
<tr>
<td class="name"><code>visualizersCallback</code></td>
<td class="type">
<span class="param-type"><a href="DataSourceDisplay.html#.VisualizersCallback">DataSourceDisplay.VisualizersCallback</a></span>
</td>
<td class="default">
<code class="language-javascript">DataSourceDisplay.defaultVisualizersCallback</code>
</td>
<td class="description last">
<span class="optional">optional</span>
A function which creates an array of visualizers used for visualization.
If undefined, all standard visualizers are used.</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<dl class="details">
</dl>
</div>
<h3 class="subsection-title">Members</h3>
<div class="nameContainer">
<h4 class="name" id="dataSources">
<a href="#dataSources" class="doc-link"></a>
dataSources<span class="type-signature"> : <a href="DataSourceCollection.html">DataSourceCollection</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/DataSourceDisplay.js#L173">DataSources/DataSourceDisplay.js 173</a>
</div>
</h4>
</div>
<div class="description">
Gets the collection of data sources to display.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="defaultDataSource">
<a href="#defaultDataSource" class="doc-link"></a>
defaultDataSource<span class="type-signature"> : <a href="CustomDataSource.html">CustomDataSource</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/DataSourceDisplay.js#L186">DataSources/DataSourceDisplay.js 186</a>
</div>
</h4>
</div>
<div class="description">
Gets the default data source instance which can be used to
manually create and visualize entities not tied to
a specific data source. This instance is always available
and does not appear in the list dataSources collection.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="ready">
<a href="#ready" class="doc-link"></a>
<span class="type-signature attribute-readonly">readonly</span> ready<span class="type-signature"> : Boolean</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/DataSourceDisplay.js#L198">DataSources/DataSourceDisplay.js 198</a>
</div>
</h4>
</div>
<div class="description">
Gets a value indicating whether or not all entities in the data source are ready
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="scene">
<a href="#scene" class="doc-link"></a>
scene<span class="type-signature"> : <a href="Scene.html">Scene</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/DataSourceDisplay.js#L163">DataSources/DataSourceDisplay.js 163</a>
</div>
</h4>
</div>
<div class="description">
Gets the scene associated with this display.
</div>
<dl class="details">
</dl>
<h3 class="subsection-title">Methods</h3>
<div class="nameContainer">
<h4 class="name" id=".defaultVisualizersCallback">
<a href="#.defaultVisualizersCallback" class="doc-link"></a>
<span class="type-signature attribute-static">static</span> Cesium.DataSourceDisplay.defaultVisualizersCallback<span class="signature">()</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/DataSourceDisplay.js#L129">DataSources/DataSourceDisplay.js 129</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the default function which creates an array of visualizers used for visualization.
By default, this function uses all standard visualizers.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="destroy">
<a href="#destroy" class="doc-link"></a>
destroy<span class="signature">()</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/DataSourceDisplay.js#L235">DataSources/DataSourceDisplay.js 235</a>
</div>
</h4>
</div>
<div class="description">
Destroys the WebGL resources held by this object. Destroying an object allows for deterministic
release of WebGL resources, instead of relying on the garbage collector to destroy this object.
<br /><br />
Once an object is destroyed, it should not be used; calling any function other than
<code>isDestroyed</code> will result in a <a href="DeveloperError.html"><code>DeveloperError</code></a> exception. Therefore,
assign the return value (<code>undefined</code>) to the object as done in the example.
</div>
<h5>Throws:</h5>
<ul>
<li>
<div class="param-desc">
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
: This object was destroyed, i.e., destroy() was called.
</div>
</li>
</ul>
<dl class="details">
<h5>Example:</h5>
<pre><code class="language-javascript">dataSourceDisplay = dataSourceDisplay.destroy();</code></pre>
<h5>See:</h5>
<ul class="see-list">
<li><a href="DataSourceDisplay.html#isDestroyed">DataSourceDisplay#isDestroyed</a></li>
</ul>
</dl>
<div class="nameContainer">
<h4 class="name" id="isDestroyed">
<a href="#isDestroyed" class="doc-link"></a>
isDestroyed<span class="signature">()</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/DataSourceDisplay.js#L215">DataSources/DataSourceDisplay.js 215</a>
</div>
</h4>
</div>
<div class="description">
Returns true if this object was destroyed; otherwise, false.
<br /><br />
If this object was destroyed, it should not be used; calling any function other than
<code>isDestroyed</code> will result in a <a href="DeveloperError.html"><code>DeveloperError</code></a> exception.
</div>
<h5>Returns:</h5>
<div class="param-desc">
True if this object was destroyed; otherwise, false.
</div>
<dl class="details">
<h5>See:</h5>
<ul class="see-list">
<li><a href="DataSourceDisplay.html#destroy">DataSourceDisplay#destroy</a></li>
</ul>
</dl>
<div class="nameContainer">
<h4 class="name" id="update">
<a href="#update" class="doc-link"></a>
update<span class="signature">(time)</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/DataSourceDisplay.js#L264">DataSources/DataSourceDisplay.js 264</a>
</div>
</h4>
</div>
<div class="description">
Updates the display to the provided 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"><a href="JulianDate.html">JulianDate</a></span>
</td>
<td class="description last">
The simulation time.</td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="param-desc">
True if all data sources are ready to be displayed, false otherwise.
</div>
<dl class="details">
</dl>
<h3 class="subsection-title">Type Definitions</h3>
<div class="nameContainer">
<h4 class="name" id=".VisualizersCallback">
<a href="#.VisualizersCallback" class="doc-link"></a>
Cesium.DataSourceDisplay.VisualizersCallback<span class="signature">(scene, dataSource)</span> &rarr; <span class="type-signature returnType">Array.&lt;<a href="Visualizer.html">Visualizer</a>></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/DataSourceDisplay.js#L497">DataSources/DataSourceDisplay.js 497</a>
</div>
</h4>
</div>
<div class="description">
A function which creates an array of visualizers used for visualization.
</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>scene</code></td>
<td class="type">
<span class="param-type"><a href="Scene.html">Scene</a></span>
</td>
<td class="description last">
The scene to create visualizers for.</td>
</tr>
<tr>
<td class="name"><code>dataSource</code></td>
<td class="type">
<span class="param-type"><a href="DataSource.html">DataSource</a></span>
</td>
<td class="description last">
The data source to create visualizers for.</td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="param-desc">
An array of visualizers used for visualization.
</div>
<dl class="details">
<h5>Example:</h5>
<pre><code class="language-javascript">function createVisualizers(scene, dataSource) {
return [new Cesium.BillboardVisualizer(scene, dataSource.entities)];
}</code></pre>
</dl>
</article>
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