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<!DOCTYPE html>
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<html lang="zh">
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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:Mesh] →
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<h1>镜头光晕（[name]）</h1>
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<p class="desc">
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创建一个模拟追踪着灯光的镜头光晕。 [name] can only be used when setting the *alpha* context parameter of [page:WebGLRenderer] to *true*.
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</p>
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<h2>导入</h2>
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<p>
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[name] 是一个附加组件，必须显式导入。
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See [link:#manual/introduction/Installation Installation / Addons].
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</p>
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<code>
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import { Lensflare, LensflareElement } from 'three/addons/objects/Lensflare.js';
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</code>
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<h2>代码示例</h2>
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<code>
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const light = new THREE.PointLight( 0xffffff, 1.5, 2000 );
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const textureLoader = new THREE.TextureLoader();
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const textureFlare0 = textureLoader.load( "textures/lensflare/lensflare0.png" );
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const textureFlare1 = textureLoader.load( "textures/lensflare/lensflare2.png" );
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const textureFlare2 = textureLoader.load( "textures/lensflare/lensflare3.png" );
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const lensflare = new Lensflare();
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lensflare.addElement( new LensflareElement( textureFlare0, 512, 0 ) );
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lensflare.addElement( new LensflareElement( textureFlare1, 512, 0 ) );
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lensflare.addElement( new LensflareElement( textureFlare2, 60, 0.6 ) );
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light.add( lensflare );
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</code>
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<h2>例子</h2>
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<p>
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[example:webgl_lensflares WebGL / lensflares]
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</p>
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<h2>Constructor</h2>
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<h3>LensflareElement( [param:Texture texture], [param:Float size], [param:Float distance], [param:Color color] )</h3>
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<p>
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[page:Texture texture] - 用于光晕的THREE.Texture（贴图）<br />
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[page:Float size] - （可选）光晕尺寸（单位为像素）<br />
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[page:Float distance] - （可选）和光源的距离值在0到1之间（值为0时在光源的位置）<br />
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[page:Color color] - （可选）光晕的（[page:Color]）颜色
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</p>
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<h2>属性</h2>
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<p>请参阅其基类[page:Mesh]来了解共有属性。</p>
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<h2>源代码</h2>
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<p>
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[link:https://github.com/mrdoob/three.js/blob/master/examples/jsm/objects/Lensflare.js examples/jsm/objects/Lensflare.js]
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</p>
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</body>
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</html>
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