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2022-07-05 16:56:29 +08:00
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<title>GoogleEarthEnterpriseMetadata - Cesium Documentation</title>
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<div id="main">
<h1 class="page-title">
<a href="index.html"><img src="Images/CesiumLogo.png" class="cesiumLogo"></a>
GoogleEarthEnterpriseMetadata
<div class="titleCenterer"></div>
</h1>
<section>
<header>
</header>
<article>
<div class="container-overview">
<div class="nameContainer">
<h4 class="name" id="GoogleEarthEnterpriseMetadata">
<a href="#GoogleEarthEnterpriseMetadata" class="doc-link"></a>
new Cesium.GoogleEarthEnterpriseMetadata<span class="signature">(resourceOrUrl)</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L46">Core/GoogleEarthEnterpriseMetadata.js 46</a>
</div>
</h4>
</div>
<div class="description">
Provides metadata using the Google Earth Enterprise REST API. This is used by the GoogleEarthEnterpriseImageryProvider
and GoogleEarthEnterpriseTerrainProvider to share metadata requests.
</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>resourceOrUrl</code></td>
<td class="type">
<span class="param-type"><a href="Resource.html">Resource</a></span>
|
<span class="param-type">String</span>
</td>
<td class="description last">
The url of the Google Earth Enterprise server hosting the imagery</td>
</tr>
</tbody>
</table>
<dl class="details">
<h5>See:</h5>
<ul class="see-list">
<li><a href="GoogleEarthEnterpriseImageryProvider.html">GoogleEarthEnterpriseImageryProvider</a></li>
<li><a href="GoogleEarthEnterpriseTerrainProvider.html">GoogleEarthEnterpriseTerrainProvider</a></li>
</ul>
</dl>
</div>
<h3 class="subsection-title">Members</h3>
<div class="nameContainer">
<h4 class="name" id="imageryPresent">
<a href="#imageryPresent" class="doc-link"></a>
imageryPresent<span class="type-signature"> : Boolean</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L70">Core/GoogleEarthEnterpriseMetadata.js 70</a>
</div>
</h4>
</div>
<div class="description">
True if imagery is available.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">true</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="key">
<a href="#key" class="doc-link"></a>
key<span class="type-signature"> : ArrayBuffer</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L111">Core/GoogleEarthEnterpriseMetadata.js 111</a>
</div>
</h4>
</div>
<div class="description">
Key used to decode packets
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="negativeAltitudeExponentBias">
<a href="#negativeAltitudeExponentBias" class="doc-link"></a>
negativeAltitudeExponentBias<span class="type-signature"> : Number</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L91">Core/GoogleEarthEnterpriseMetadata.js 91</a>
</div>
</h4>
</div>
<div class="description">
Exponent used to compute constant to calculate negative height values.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">32</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="negativeAltitudeThreshold">
<a href="#negativeAltitudeThreshold" class="doc-link"></a>
negativeAltitudeThreshold<span class="type-signature"> : Number</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L98">Core/GoogleEarthEnterpriseMetadata.js 98</a>
</div>
</h4>
</div>
<div class="description">
Threshold where any numbers smaller are actually negative values. They are multiplied by -2^negativeAltitudeExponentBias.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">EPSILON12</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="protoImagery">
<a href="#protoImagery" class="doc-link"></a>
protoImagery<span class="type-signature"> : Boolean</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L77">Core/GoogleEarthEnterpriseMetadata.js 77</a>
</div>
</h4>
</div>
<div class="description">
True if imagery is sent as a protocol buffer, false if sent as plain images. If undefined we will try both.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">undefined</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="providers">
<a href="#providers" class="doc-link"></a>
providers<span class="type-signature"> : Object</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L105">Core/GoogleEarthEnterpriseMetadata.js 105</a>
</div>
</h4>
</div>
<div class="description">
Dictionary of provider id to copyright strings.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">{}</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="proxy">
<a href="#proxy" class="doc-link"></a>
<span class="type-signature attribute-readonly">readonly</span> proxy<span class="type-signature"> : <a href="Proxy.html">Proxy</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L153">Core/GoogleEarthEnterpriseMetadata.js 153</a>
</div>
</h4>
</div>
<div class="description">
Gets the proxy used for metadata requests.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="readyPromise">
<a href="#readyPromise" class="doc-link"></a>
<span class="type-signature attribute-readonly">readonly</span> readyPromise<span class="type-signature"> : Promise.&lt;Boolean></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L177">Core/GoogleEarthEnterpriseMetadata.js 177</a>
</div>
</h4>
</div>
<div class="description">
Gets a promise that resolves to true when the metadata is ready for use.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="resource">
<a href="#resource" class="doc-link"></a>
<span class="type-signature attribute-readonly">readonly</span> resource<span class="type-signature"> : <a href="Resource.html">Resource</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L165">Core/GoogleEarthEnterpriseMetadata.js 165</a>
</div>
</h4>
</div>
<div class="description">
Gets the resource used for metadata requests.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="terrainPresent">
<a href="#terrainPresent" class="doc-link"></a>
terrainPresent<span class="type-signature"> : Boolean</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L84">Core/GoogleEarthEnterpriseMetadata.js 84</a>
</div>
</h4>
</div>
<div class="description">
True if terrain is available.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">true</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="url">
<a href="#url" class="doc-link"></a>
<span class="type-signature attribute-readonly">readonly</span> url<span class="type-signature"> : String</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L141">Core/GoogleEarthEnterpriseMetadata.js 141</a>
</div>
</h4>
</div>
<div class="description">
Gets the name of the Google Earth Enterprise server.
</div>
<dl class="details">
</dl>
<h3 class="subsection-title">Methods</h3>
<div class="nameContainer">
<h4 class="name" id=".quadKeyToTileXY">
<a href="#.quadKeyToTileXY" class="doc-link"></a>
<span class="type-signature attribute-static">static</span> Cesium.GoogleEarthEnterpriseMetadata.quadKeyToTileXY<span class="signature">(quadkey)</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L234">Core/GoogleEarthEnterpriseMetadata.js 234</a>
</div>
</h4>
</div>
<div class="description">
Converts a tile's quadkey used to request an image from a Google Earth Enterprise server into the
(x, y, level) position.
</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>quadkey</code></td>
<td class="type">
<span class="param-type">String</span>
</td>
<td class="description last">
The tile's quad key</td>
</tr>
</tbody>
</table>
<dl class="details">
<h5>See:</h5>
<ul class="see-list">
<li>GoogleEarthEnterpriseMetadata#tileXYToQuadKey</li>
</ul>
</dl>
<div class="nameContainer">
<h4 class="name" id=".tileXYToQuadKey">
<a href="#.tileXYToQuadKey" class="doc-link"></a>
<span class="type-signature attribute-static">static</span> Cesium.GoogleEarthEnterpriseMetadata.tileXYToQuadKey<span class="signature">(x, y, level)</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/GoogleEarthEnterpriseMetadata.js#L194">Core/GoogleEarthEnterpriseMetadata.js 194</a>
</div>
</h4>
</div>
<div class="description">
Converts a tiles (x, y, level) position into a quadkey used to request an image
from a Google Earth Enterprise server.
</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>x</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="description last">
The tile's x coordinate.</td>
</tr>
<tr>
<td class="name"><code>y</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="description last">
The tile's y coordinate.</td>
</tr>
<tr>
<td class="name"><code>level</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="description last">
The tile's zoom level.</td>
</tr>
</tbody>
</table>
<dl class="details">
<h5>See:</h5>
<ul class="see-list">
<li>GoogleEarthEnterpriseMetadata#quadKeyToTileXY</li>
</ul>
</dl>
</article>
</section>
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