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95 lines
2.9 KiB
95 lines
2.9 KiB
<!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:LightShadow] →
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<h1>[name]</h1>
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<p class="desc">
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该类在内部由[page:PointLight PointLights]所使用，以用于计算阴影。
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</p>
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<h2>代码示例</h2>
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<code>
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//Create a WebGLRenderer and turn on shadows in the renderer
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const renderer = new THREE.WebGLRenderer();
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renderer.shadowMap.enabled = true;
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renderer.shadowMap.type = THREE.PCFSoftShadowMap; // default THREE.PCFShadowMap
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//Create a PointLight and turn on shadows for the light
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const light = new THREE.PointLight( 0xffffff, 1, 100 );
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light.position.set( 0, 10, 4 );
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light.castShadow = true; // default false
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scene.add( light );
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//Set up shadow properties for the light
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light.shadow.mapSize.width = 512; // default
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light.shadow.mapSize.height = 512; // default
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light.shadow.camera.near = 0.5; // default
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light.shadow.camera.far = 500 // default
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//Create a sphere that cast shadows (but does not receive them)
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const sphereGeometry = new THREE.SphereGeometry( 5, 32, 32 );
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const sphereMaterial = new THREE.MeshStandardMaterial( { color: 0xff0000 } );
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const sphere = new THREE.Mesh( sphereGeometry, sphereMaterial );
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sphere.castShadow = true; //default is false
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sphere.receiveShadow = false; //default
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scene.add( sphere );
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//Create a plane that receives shadows (but does not cast them)
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const planeGeometry = new THREE.PlaneGeometry( 20, 20, 32, 32 );
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const planeMaterial = new THREE.MeshStandardMaterial( { color: 0x00ff00 } )
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const plane = new THREE.Mesh( planeGeometry, planeMaterial );
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plane.receiveShadow = true;
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scene.add( plane );
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//Create a helper for the shadow camera (optional)
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const helper = new THREE.CameraHelper( light.shadow.camera );
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scene.add( helper );
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</code>
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<h2>构造函数</h2>
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<h3>[name]( )</h3>
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<p>
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创建一个新的[name]。该方法不是直接调用的 —— 其在内部由[page:PointLight]调用。
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</p>
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<h2>属性</h2>
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<p>
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共有属性请参见其基类[page:LightShadow LightShadow]。
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</p>
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<h3>[property:Boolean isPointLightShadow]</h3>
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<p>
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Read-only flag to check if a given object is of type [name].
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</p>
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<h2>方法</h2>
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<p>
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共有方法请参见其基类[page:LightShadow LightShadow]。
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</p>
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<h3>[method:undefined updateMatrices]( [param:Light light], [param:number viewportIndex])</h3>
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<p>
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Update the matrices for the camera and shadow, used internally by the renderer.<br /><br />
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light -- the light for which the shadow is being rendered.<br />
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viewportIndex -- calculates the matrix for this viewport
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</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/src/lights/[name].js src/lights/[name].js]
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</p>
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</body>
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</html>
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