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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<base href="../../../" />
<script src="list.js"></script>
<script src="page.js"></script>
<link type="text/css" rel="stylesheet" href="page.css" />
</head>
<body>
[page:Object3D] → [page:Line] → [page:LineSegments] →
<h1>[name]</h1>
<p class="desc">
This helps with visualizing what a camera contains in its frustum.<br />
It visualizes the frustum of a camera using a [page:LineSegments].
</p>
<h2>Example</h2>
<div>[example:webgl_camera WebGL / camera]</div>
<div>[example:webgl_geometry_extrude_splines WebGL / extrude / splines]</div>
<code>
var camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );
var helper = new THREE.CameraHelper( camera );
scene.add( helper );
</code>
<h2>Constructor</h2>
<h3>[name]( [param:Camera camera] )</h3>
<p>
[page:Camera camera] -- The camera to visualize.<br /><br />
This create a new [Name] for the specified camera.
</p>
<h2>Properties</h2>
<p>See the base [page:LineSegments] class for common properties.</p>
<h3>[property:Camera camera]</h3>
<p>The camera being visualized.</p>
<h3>[property:object pointMap]</h3>
<p>This contains the points used to visualize the camera.</p>
<h3>[property:object matrix]</h3>
<p>Reference to the [page:Object3D.matrixWorld camera.matrixWorld].</p>
<h3>[property:object matrixAutoUpdate]</h3>
<p>
See [page:Object3D.matrixAutoUpdate]. Set to *false* here as the helper is using the
camera's [page:Object3D.matrixWorld matrixWorld].
</p>
<h2>Methods</h2>
<p>See the base [page:LineSegments] class for common methods.</p>
<h3>[method:null update]()</h3>
<p>Updates the helper based on the projectionMatrix of the camera.</p>
<h2>Source</h2>
<p>
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
</p>
</body>
</html>
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