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88 lines
2.4 KiB
88 lines
2.4 KiB
3 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<base href="../../../" />
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<script src="page.js"></script>
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<link type="text/css" rel="stylesheet" href="page.css" />
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</head>
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<body>
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[page:Object3D] → [page:Mesh] →
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<h1>[name]</h1>
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<p class="desc">
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This displays a helper object consisting of a spherical [page:Mesh] for visualizing
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a [page:PointLight].
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</p>
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<h2>Code Example</h2>
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<code>
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const pointLight = new THREE.PointLight( 0xff0000, 1, 100 );
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pointLight.position.set( 10, 10, 10 );
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scene.add( pointLight );
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const sphereSize = 1;
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const pointLightHelper = new THREE.PointLightHelper( pointLight, sphereSize );
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scene.add( pointLightHelper );
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</code>
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<h2>Examples</h2>
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<p>
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[example:webgl_helpers WebGL / helpers]
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</p>
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<h2>Constructor</h2>
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<h3>[name]( [param:PointLight light], [param:Float sphereSize], [param:Hex color] )</h3>
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<p>
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[page:PointLight light] -- The light to be visualized. <br /><br />
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[page:Float sphereSize] -- (optional) The size of the sphere helper. Default is `1`.<br /><br />
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[page:Hex color] -- (optional) if this is not the set the helper will take the color of the light.
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</p>
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<h2>Properties</h2>
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<p>See the base [page:Mesh] class for common properties.</p>
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<h3>[property:PointLight light]</h3>
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<p>The [page:PointLight] that is being visualized.</p>
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<h3>[property:Object matrix]</h3>
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<p>Reference to the pointLight's [page:Object3D.matrixWorld matrixWorld].</p>
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<h3>[property:Object matrixAutoUpdate]</h3>
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<p>
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See [page:Object3D.matrixAutoUpdate]. Set to `false` here as the helper is using the
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pointLight's [page:Object3D.matrixWorld matrixWorld].
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</p>
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<h3>[property:hex color]</h3>
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<p>
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The color parameter passed in the constructor. Default is `undefined`. If this is changed, the helper's color will update
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the next time [page:.update update] is called.
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</p>
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<h2>Methods</h2>
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<p>See the base [page:Mesh] class for common methods.</p>
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<h3>[method:undefined dispose]()</h3>
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<p>
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Frees the GPU-related resources allocated by this instance. Call this method whenever this instance is no longer used in your app.
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</p>
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<h3>[method:undefined update]()</h3>
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<p>Updates the helper to match the position of the [page:.light].</p>
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<h2>Source</h2>
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<p>
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[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
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</p>
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</body>
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</html>
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