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<!DOCTYPE html>
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<title>WallGeometry - Cesium Documentation</title>
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<h1 class="page-title">
<a href="index.html"><img src="Images/CesiumLogo.png" class="cesiumLogo"></a>
WallGeometry
<div class="titleCenterer"></div>
</h1>
<section>
<header>
</header>
<article>
<div class="container-overview">
<div class="nameContainer">
<h4 class="name" id="WallGeometry">
<a href="#WallGeometry" class="doc-link"></a>
new Cesium.WallGeometry<span class="signature">(options)</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WallGeometry.js#L64">Core/WallGeometry.js 64</a>
</div>
</h4>
</div>
<div class="description">
A description of a wall, which is similar to a KML line string. A wall is defined by a series of points,
which extrude down to the ground. Optionally, they can extrude downwards to a specified height.
</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>positions</code></td>
<td class="type">
<span class="param-type">Array.&lt;<a href="Cartesian3.html">Cartesian3</a>></span>
</td>
<td class="default">
</td>
<td class="description last">
An array of Cartesian objects, which are the points of the wall.</td>
</tr>
<tr>
<td class="name"><code>granularity</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="default">
<code class="language-javascript">CesiumMath.RADIANS_PER_DEGREE</code>
</td>
<td class="description last">
<span class="optional">optional</span>
The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.</td>
</tr>
<tr>
<td class="name"><code>maximumHeights</code></td>
<td class="type">
<span class="param-type">Array.&lt;Number></span>
</td>
<td class="default">
</td>
<td class="description last">
<span class="optional">optional</span>
An array parallel to <code>positions</code> that give the maximum height of the
wall at <code>positions</code>. If undefined, the height of each position in used.</td>
</tr>
<tr>
<td class="name"><code>minimumHeights</code></td>
<td class="type">
<span class="param-type">Array.&lt;Number></span>
</td>
<td class="default">
</td>
<td class="description last">
<span class="optional">optional</span>
An array parallel to <code>positions</code> that give the minimum height of the
wall at <code>positions</code>. If undefined, the height at each position is 0.0.</td>
</tr>
<tr>
<td class="name"><code>ellipsoid</code></td>
<td class="type">
<span class="param-type"><a href="Ellipsoid.html">Ellipsoid</a></span>
</td>
<td class="default">
<code class="language-javascript">Ellipsoid.WGS84</code>
</td>
<td class="description last">
<span class="optional">optional</span>
The ellipsoid for coordinate manipulation</td>
</tr>
<tr>
<td class="name"><code>vertexFormat</code></td>
<td class="type">
<span class="param-type"><a href="VertexFormat.html">VertexFormat</a></span>
</td>
<td class="default">
<code class="language-javascript">VertexFormat.DEFAULT</code>
</td>
<td class="description last">
<span class="optional">optional</span>
The vertex attributes to be computed.</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<h5>Throws:</h5>
<ul>
<li>
<div class="param-desc">
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
: positions length must be greater than or equal to 2.
</div>
</li>
<li>
<div class="param-desc">
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
: positions and maximumHeights must have the same length.
</div>
</li>
<li>
<div class="param-desc">
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
: positions and minimumHeights must have the same length.
</div>
</li>
</ul>
<dl class="details">
<h5>Example:</h5>
<pre><code class="language-javascript">// create a wall that spans from ground level to 10000 meters
const wall = new Cesium.WallGeometry({
positions : Cesium.Cartesian3.fromDegreesArrayHeights([
19.0, 47.0, 10000.0,
19.0, 48.0, 10000.0,
20.0, 48.0, 10000.0,
20.0, 47.0, 10000.0,
19.0, 47.0, 10000.0
])
});
const geometry = Cesium.WallGeometry.createGeometry(wall);</code></pre>
<h5>Demo:</h5>
<ul class="see-list">
<li><a href="https://sandcastle.cesium.com/index.html?src=Wall.html">Cesium Sandcastle Wall Demo</a></li>
</ul>
<h5>See:</h5>
<ul class="see-list">
<li>WallGeometry#createGeometry</li>
<li>WallGeometry#fromConstantHeight</li>
</ul>
</dl>
</div>
<h3 class="subsection-title">Members</h3>
<div class="nameContainer">
<h4 class="name" id="packedLength">
<a href="#packedLength" class="doc-link"></a>
packedLength<span class="type-signature"> : Number</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WallGeometry.js#L120">Core/WallGeometry.js 120</a>
</div>
</h4>
</div>
<div class="description">
The number of elements used to pack the object into an array.
</div>
<dl class="details">
</dl>
<h3 class="subsection-title">Methods</h3>
<div class="nameContainer">
<h4 class="name" id=".createGeometry">
<a href="#.createGeometry" class="doc-link"></a>
<span class="type-signature attribute-static">static</span> Cesium.WallGeometry.createGeometry<span class="signature">(wallGeometry)</span> &rarr; <span class="type-signature returnType"><a href="Geometry.html">Geometry</a>|undefined</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WallGeometry.js#L355">Core/WallGeometry.js 355</a>
</div>
</h4>
</div>
<div class="description">
Computes the geometric representation of a wall, including its vertices, indices, and a bounding sphere.
</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>wallGeometry</code></td>
<td class="type">
<span class="param-type"><a href="WallGeometry.html">WallGeometry</a></span>
</td>
<td class="description last">
A description of the wall.</td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="param-desc">
The computed vertices and indices.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id=".fromConstantHeights">
<a href="#.fromConstantHeights" class="doc-link"></a>
<span class="type-signature attribute-static">static</span> Cesium.WallGeometry.fromConstantHeights<span class="signature">(options)</span> &rarr; <span class="type-signature returnType"><a href="WallGeometry.html">WallGeometry</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WallGeometry.js#L305">Core/WallGeometry.js 305</a>
</div>
</h4>
</div>
<div class="description">
A description of a wall, which is similar to a KML line string. A wall is defined by a series of points,
which extrude down to the ground. Optionally, they can extrude downwards to a specified height.
</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>positions</code></td>
<td class="type">
<span class="param-type">Array.&lt;<a href="Cartesian3.html">Cartesian3</a>></span>
</td>
<td class="default">
</td>
<td class="description last">
An array of Cartesian objects, which are the points of the wall.</td>
</tr>
<tr>
<td class="name"><code>maximumHeight</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="default">
</td>
<td class="description last">
<span class="optional">optional</span>
A constant that defines the maximum height of the
wall at <code>positions</code>. If undefined, the height of each position in used.</td>
</tr>
<tr>
<td class="name"><code>minimumHeight</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="default">
</td>
<td class="description last">
<span class="optional">optional</span>
A constant that defines the minimum height of the
wall at <code>positions</code>. If undefined, the height at each position is 0.0.</td>
</tr>
<tr>
<td class="name"><code>ellipsoid</code></td>
<td class="type">
<span class="param-type"><a href="Ellipsoid.html">Ellipsoid</a></span>
</td>
<td class="default">
<code class="language-javascript">Ellipsoid.WGS84</code>
</td>
<td class="description last">
<span class="optional">optional</span>
The ellipsoid for coordinate manipulation</td>
</tr>
<tr>
<td class="name"><code>vertexFormat</code></td>
<td class="type">
<span class="param-type"><a href="VertexFormat.html">VertexFormat</a></span>
</td>
<td class="default">
<code class="language-javascript">VertexFormat.DEFAULT</code>
</td>
<td class="description last">
<span class="optional">optional</span>
The vertex attributes to be computed.</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<dl class="details">
<h5>Example:</h5>
<pre><code class="language-javascript">// create a wall that spans from 10000 meters to 20000 meters
const wall = Cesium.WallGeometry.fromConstantHeights({
positions : Cesium.Cartesian3.fromDegreesArray([
19.0, 47.0,
19.0, 48.0,
20.0, 48.0,
20.0, 47.0,
19.0, 47.0,
]),
minimumHeight : 20000.0,
maximumHeight : 10000.0
});
const geometry = Cesium.WallGeometry.createGeometry(wall);</code></pre>
<h5>See:</h5>
<ul class="see-list">
<li>WallGeometry#createGeometry</li>
</ul>
</dl>
<div class="nameContainer">
<h4 class="name" id=".pack">
<a href="#.pack" class="doc-link"></a>
<span class="type-signature attribute-static">static</span> Cesium.WallGeometry.pack<span class="signature">(value, array, <span class="optional">startingIndex</span>)</span> &rarr; <span class="type-signature returnType">Array.&lt;Number></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WallGeometry.js#L133">Core/WallGeometry.js 133</a>
</div>
</h4>
</div>
<div class="description">
Stores the provided instance into the provided array.
</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"><a href="WallGeometry.html">WallGeometry</a></span>
</td>
<td class="default">
</td>
<td class="description last">
The value to pack.</td>
</tr>
<tr>
<td class="name"><code>array</code></td>
<td class="type">
<span class="param-type">Array.&lt;Number></span>
</td>
<td class="default">
</td>
<td class="description last">
The array to pack into.</td>
</tr>
<tr>
<td class="name"><code>startingIndex</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="default">
<code class="language-javascript">0</code>
</td>
<td class="description last">
<span class="optional">optional</span>
The index into the array at which to start packing the elements.</td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="param-desc">
The array that was packed into
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id=".unpack">
<a href="#.unpack" class="doc-link"></a>
<span class="type-signature attribute-static">static</span> Cesium.WallGeometry.unpack<span class="signature">(array, <span class="optional">startingIndex</span>, <span class="optional">result</span>)</span> &rarr; <span class="type-signature returnType"><a href="WallGeometry.html">WallGeometry</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/Core/WallGeometry.js#L205">Core/WallGeometry.js 205</a>
</div>
</h4>
</div>
<div class="description">
Retrieves an instance from a packed array.
</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>array</code></td>
<td class="type">
<span class="param-type">Array.&lt;Number></span>
</td>
<td class="default">
</td>
<td class="description last">
The packed array.</td>
</tr>
<tr>
<td class="name"><code>startingIndex</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="default">
<code class="language-javascript">0</code>
</td>
<td class="description last">
<span class="optional">optional</span>
The starting index of the element to be unpacked.</td>
</tr>
<tr>
<td class="name"><code>result</code></td>
<td class="type">
<span class="param-type"><a href="WallGeometry.html">WallGeometry</a></span>
</td>
<td class="default">
</td>
<td class="description last">
<span class="optional">optional</span>
The object into which to store the result.</td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="param-desc">
The modified result parameter or a new WallGeometry instance if one was not provided.
</div>
<dl class="details">
</dl>
</article>
</section>
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