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83 lines
2.2 KiB
83 lines
2.2 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] →
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<h1>[name]</h1>
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<p class="desc">This displays a cone shaped helper object for a [page:SpotLight].</p>
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<h2>Code Example</h2>
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<code>
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const spotLight = new THREE.SpotLight( 0xffffff );
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spotLight.position.set( 10, 10, 10 );
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scene.add( spotLight );
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const spotLightHelper = new THREE.SpotLightHelper( spotLight );
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scene.add( spotLightHelper );
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</code>
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<h2>Examples</h2>
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<p>
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[example:webgl_lights_spotlights WebGL/ lights / spotlights ]
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</p>
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<h2>Constructor</h2>
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<h3>[name]( [param:SpotLight light], [param:Hex color] )</h3>
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<p>
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[page:SpotLight light] -- The [page:SpotLight] to be visualized. <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:Object3D] class for common properties.</p>
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<h3>[property:LineSegments cone]</h3>
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<p>[page:LineSegments] used to visualize the light.</p>
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<h3>[property:SpotLight light]</h3>
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<p>Reference to the [page:SpotLight] being visualized.</p>
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<h3>[property:Object matrix]</h3>
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<p>Reference to the spotLight'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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spotLight'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:Object3D] 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 light helper.</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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