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2022-07-05 16:56:29 +08:00
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>PolylineGraphics - Cesium Documentation</title>
<!--[if lt IE 9]>
<script src="javascript/html5.js"></script>
<![endif]-->
<link href="styles/jsdoc-default.css" rel="stylesheet">
<link href="styles/prism.css" rel="stylesheet">
</head>
<body>
<div id="main">
<h1 class="page-title">
<a href="index.html"><img src="Images/CesiumLogo.png" class="cesiumLogo"></a>
PolylineGraphics
<div class="titleCenterer"></div>
</h1>
<section>
<header>
</header>
<article>
<div class="container-overview">
<div class="nameContainer">
<h4 class="name" id="PolylineGraphics">
<a href="#PolylineGraphics" class="doc-link"></a>
new Cesium.PolylineGraphics<span class="signature">(<span class="optional">options</span>)</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L40">DataSources/PolylineGraphics.js 40</a>
</div>
</h4>
</div>
<div class="description">
Describes a polyline. The first two positions define a line segment,
and each additional position defines a line segment from the previous position. The segments
can be linear connected points, great arcs, or clamped to terrain.
</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"><a href="PolylineGraphics.html#.ConstructorOptions">PolylineGraphics.ConstructorOptions</a></span>
</td>
<td class="description last">
<span class="optional">optional</span>
Object describing initialization options</td>
</tr>
</tbody>
</table>
<dl class="details">
<h5>Demo:</h5>
<ul class="see-list">
<li><a href="https://sandcastle.cesium.com/index.html?src=Polyline.html">Cesium Sandcastle Polyline Demo</a></li>
</ul>
<h5>See:</h5>
<ul class="see-list">
<li><a href="Entity.html">Entity</a></li>
</ul>
</dl>
</div>
<h3 class="subsection-title">Members</h3>
<div class="nameContainer">
<h4 class="name" id="arcType">
<a href="#arcType" class="doc-link"></a>
arcType<span class="type-signature"> : <a href="Property.html">Property</a>|undefined</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L142">DataSources/PolylineGraphics.js 142</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the <a href="global.html#ArcType"><code>ArcType</code></a> Property specifying whether the line segments should be great arcs, rhumb lines or linearly connected.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">ArcType.GEODESIC</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="clampToGround">
<a href="#clampToGround" class="doc-link"></a>
clampToGround<span class="type-signature"> : <a href="Property.html">Property</a>|undefined</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L151">DataSources/PolylineGraphics.js 151</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the boolean Property specifying whether the polyline
should be clamped to the ground.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">false</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="classificationType">
<a href="#classificationType" class="doc-link"></a>
classificationType<span class="type-signature"> : <a href="Property.html">Property</a>|undefined</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L177">DataSources/PolylineGraphics.js 177</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the <a href="global.html#ClassificationType"><code>ClassificationType</code></a> Property specifying whether this polyline will classify terrain, 3D Tiles, or both when on the ground.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">ClassificationType.BOTH</code>
</dl>
<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/PolylineGraphics.js#L78">DataSources/PolylineGraphics.js 78</a>
</div>
</h4>
</div>
<div class="description">
Gets the event that is raised whenever a property or sub-property is changed or modified.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="depthFailMaterial">
<a href="#depthFailMaterial" class="doc-link"></a>
depthFailMaterial<span class="type-signature"> : <a href="MaterialProperty.html">MaterialProperty</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L134">DataSources/PolylineGraphics.js 134</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the Property specifying the material used to draw the polyline when it fails the depth test.
<p>
Requires the EXT_frag_depth WebGL extension to render properly. If the extension is not supported,
there may be artifacts.
</p>
</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="distanceDisplayCondition">
<a href="#distanceDisplayCondition" class="doc-link"></a>
distanceDisplayCondition<span class="type-signature"> : <a href="Property.html">Property</a>|undefined</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L167">DataSources/PolylineGraphics.js 167</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the <a href="DistanceDisplayCondition.html"><code>DistanceDisplayCondition</code></a> Property specifying at what distance from the camera that this polyline will be displayed.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="granularity">
<a href="#granularity" class="doc-link"></a>
granularity<span class="type-signature"> : <a href="Property.html">Property</a>|undefined</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L114">DataSources/PolylineGraphics.js 114</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the numeric Property specifying the angular distance between each latitude and longitude if arcType is not ArcType.NONE and clampToGround is false.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">Cesium.Math.RADIANS_PER_DEGREE</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="material">
<a href="#material" class="doc-link"></a>
material<span class="type-signature"> : <a href="MaterialProperty.html">MaterialProperty</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L122">DataSources/PolylineGraphics.js 122</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the Property specifying the material used to draw the polyline.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">Color.WHITE</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="positions">
<a href="#positions" class="doc-link"></a>
positions<span class="type-signature"> : <a href="Property.html">Property</a>|undefined</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L98">DataSources/PolylineGraphics.js 98</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the Property specifying the array of <a href="Cartesian3.html"><code>Cartesian3</code></a>
positions that define the line strip.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="shadows">
<a href="#shadows" class="doc-link"></a>
shadows<span class="type-signature"> : <a href="Property.html">Property</a>|undefined</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L160">DataSources/PolylineGraphics.js 160</a>
</div>
</h4>
</div>
<div class="description">
Get or sets the enum Property specifying whether the polyline
casts or receives shadows from light sources.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">ShadowMode.DISABLED</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="show">
<a href="#show" class="doc-link"></a>
show<span class="type-signature"> : <a href="Property.html">Property</a>|undefined</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L90">DataSources/PolylineGraphics.js 90</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the boolean Property specifying the visibility of the polyline.
</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="width">
<a href="#width" class="doc-link"></a>
width<span class="type-signature"> : <a href="Property.html">Property</a>|undefined</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L106">DataSources/PolylineGraphics.js 106</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the numeric Property specifying the width in pixels.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">1.0</code>
</dl>
<div class="nameContainer">
<h4 class="name" id="zIndex">
<a href="#zIndex" class="doc-link"></a>
zIndex<span class="type-signature"> : <a href="ConstantProperty.html">ConstantProperty</a>|undefined</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L185">DataSources/PolylineGraphics.js 185</a>
</div>
</h4>
</div>
<div class="description">
Gets or sets the zIndex Property specifying the ordering of the polyline. Only has an effect if `clampToGround` is true and polylines on terrain is supported.
</div>
<dl class="details">
<span class="details-header">Default Value:</span>
<code class="language-javascript">0</code>
</dl>
<h3 class="subsection-title">Methods</h3>
<div class="nameContainer">
<h4 class="name" id="clone">
<a href="#clone" class="doc-link"></a>
clone<span class="signature">(<span class="optional">result</span>)</span> &rarr; <span class="type-signature returnType"><a href="PolylineGraphics.html">PolylineGraphics</a></span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L194">DataSources/PolylineGraphics.js 194</a>
</div>
</h4>
</div>
<div class="description">
Duplicates this instance.
</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>result</code></td>
<td class="type">
<span class="param-type"><a href="PolylineGraphics.html">PolylineGraphics</a></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 if one was not provided.
</div>
<dl class="details">
</dl>
<div class="nameContainer">
<h4 class="name" id="merge">
<a href="#merge" class="doc-link"></a>
merge<span class="signature">(source)</span>
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L219">DataSources/PolylineGraphics.js 219</a>
</div>
</h4>
</div>
<div class="description">
Assigns each unassigned property on this object to the value
of the same property on the provided source object.
</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>source</code></td>
<td class="type">
<span class="param-type"><a href="PolylineGraphics.html">PolylineGraphics</a></span>
</td>
<td class="description last">
The object to be merged into this object.</td>
</tr>
</tbody>
</table>
<dl class="details">
</dl>
<h3 class="subsection-title">Type Definitions</h3>
<div class="nameContainer">
<h4 class="name" id=".ConstructorOptions">
<a href="#.ConstructorOptions" class="doc-link"></a>
Cesium.PolylineGraphics.ConstructorOptions
<div class="source-link rightLinks">
<a href="https://github.com/CesiumGS/cesium/blob/1.91/Source/DataSources/PolylineGraphics.js#L8">DataSources/PolylineGraphics.js 8</a>
</div>
</h4>
</div>
<div class="description">
Initialization options for the PolylineGraphics constructor
</div>
<dl class="details">
<h5 class="subsection-title">Properties:</h5>
<table class="props">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Attributes</th>
<th>Default</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>show</code></td>
<td class="type">
<span class="param-type"><a href="Property.html">Property</a></span>
|
<span class="param-type">boolean</span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
true
</td>
<td class="description last">A boolean Property specifying the visibility of the polyline.</td>
</tr>
<tr>
<td class="name"><code>positions</code></td>
<td class="type">
<span class="param-type"><a href="Property.html">Property</a></span>
|
<span class="param-type">Array.&lt;<a href="Cartesian3.html">Cartesian3</a>></span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
</td>
<td class="description last">A Property specifying the array of <a href="Cartesian3.html"><code>Cartesian3</code></a> positions that define the line strip.</td>
</tr>
<tr>
<td class="name"><code>width</code></td>
<td class="type">
<span class="param-type"><a href="Property.html">Property</a></span>
|
<span class="param-type">number</span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
1.0
</td>
<td class="description last">A numeric Property specifying the width in pixels.</td>
</tr>
<tr>
<td class="name"><code>granularity</code></td>
<td class="type">
<span class="param-type"><a href="Property.html">Property</a></span>
|
<span class="param-type">number</span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
Cesium.Math.RADIANS_PER_DEGREE
</td>
<td class="description last">A numeric Property specifying the angular distance between each latitude and longitude if arcType is not ArcType.NONE.</td>
</tr>
<tr>
<td class="name"><code>material</code></td>
<td class="type">
<span class="param-type"><a href="MaterialProperty.html">MaterialProperty</a></span>
|
<span class="param-type"><a href="Color.html">Color</a></span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
Color.WHITE
</td>
<td class="description last">A Property specifying the material used to draw the polyline.</td>
</tr>
<tr>
<td class="name"><code>depthFailMaterial</code></td>
<td class="type">
<span class="param-type"><a href="MaterialProperty.html">MaterialProperty</a></span>
|
<span class="param-type"><a href="Color.html">Color</a></span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
</td>
<td class="description last">A property specifying the material used to draw the polyline when it is below the terrain.</td>
</tr>
<tr>
<td class="name"><code>arcType</code></td>
<td class="type">
<span class="param-type"><a href="Property.html">Property</a></span>
|
<span class="param-type"><a href="global.html#ArcType">ArcType</a></span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
ArcType.GEODESIC
</td>
<td class="description last">The type of line the polyline segments must follow.</td>
</tr>
<tr>
<td class="name"><code>clampToGround</code></td>
<td class="type">
<span class="param-type"><a href="Property.html">Property</a></span>
|
<span class="param-type">boolean</span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
false
</td>
<td class="description last">A boolean Property specifying whether the Polyline should be clamped to the ground.</td>
</tr>
<tr>
<td class="name"><code>shadows</code></td>
<td class="type">
<span class="param-type"><a href="Property.html">Property</a></span>
|
<span class="param-type"><a href="global.html#ShadowMode">ShadowMode</a></span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
ShadowMode.DISABLED
</td>
<td class="description last">An enum Property specifying whether the polyline casts or receives shadows from light sources.</td>
</tr>
<tr>
<td class="name"><code>distanceDisplayCondition</code></td>
<td class="type">
<span class="param-type"><a href="Property.html">Property</a></span>
|
<span class="param-type"><a href="DistanceDisplayCondition.html">DistanceDisplayCondition</a></span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
</td>
<td class="description last">A Property specifying at what distance from the camera that this polyline will be displayed.</td>
</tr>
<tr>
<td class="name"><code>classificationType</code></td>
<td class="type">
<span class="param-type"><a href="Property.html">Property</a></span>
|
<span class="param-type"><a href="global.html#ClassificationType">ClassificationType</a></span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
ClassificationType.BOTH
</td>
<td class="description last">An enum Property specifying whether this polyline will classify terrain, 3D Tiles, or both when on the ground.</td>
</tr>
<tr>
<td class="name"><code>zIndex</code></td>
<td class="type">
<span class="param-type"><a href="Property.html">Property</a></span>
|
<span class="param-type">number</span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
0
</td>
<td class="description last">A Property specifying the zIndex used for ordering ground geometry. Only has an effect if `clampToGround` is true and polylines on terrain is supported.</td>
</tr>
</tbody>
</table>
</dl>
</article>
</section>
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