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79 lines
2.7 KiB
79 lines
2.7 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:BufferGeometry] →
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<h1>球缓冲几何体（[name]）</h1>
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<p class="desc">一个用于生成球体的类。</p>
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<iframe id="scene" src="scenes/geometry-browser.html#SphereGeometry"></iframe>
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<script>
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// iOS iframe auto-resize workaround
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if ( /(iPad|iPhone|iPod)/g.test( navigator.userAgent ) ) {
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const scene = document.getElementById( 'scene' );
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scene.style.width = getComputedStyle( scene ).width;
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scene.style.height = getComputedStyle( scene ).height;
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scene.setAttribute( 'scrolling', 'no' );
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}
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</script>
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<h2>代码示例</h2>
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<code>const geometry = new THREE.SphereGeometry( 15, 32, 16 );
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const material = new THREE.MeshBasicMaterial( { color: 0xffff00 } );
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const sphere = new THREE.Mesh( geometry, material );
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scene.add( sphere );
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</code>
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<h2>构造器</h2>
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<h3>[name]([param:Float radius], [param:Integer widthSegments], [param:Integer heightSegments], [param:Float phiStart], [param:Float phiLength], [param:Float thetaStart], [param:Float thetaLength])</h3>
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<p>
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radius — 球体半径，默认为1。<br />
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widthSegments — 水平分段数（沿着经线分段），最小值为3，默认值为32。<br />
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heightSegments — 垂直分段数（沿着纬线分段），最小值为2，默认值为16。<br />
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phiStart — 指定水平（经线）起始角度，默认值为0。。<br />
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phiLength — 指定水平（经线）扫描角度的大小，默认值为 Math.PI * 2。<br />
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thetaStart — 指定垂直（纬线）起始角度，默认值为0。<br />
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thetaLength — 指定垂直（纬线）扫描角度大小，默认值为 Math.PI。<br />
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</p>
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<p>
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该几何体是通过扫描并计算围绕着Y轴（水平扫描）和X轴（垂直扫描）的顶点来创建的。
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因此，不完整的球体（类似<em>球形切片</em>）可以通过为phiStart，phiLength，thetaStart和thetaLength设置不同的值来创建，
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以定义我们开始（或结束）计算这些顶点的起点（或终点）。
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</p>
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<h2>属性</h2>
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<p>共有属性请参见其基类[page:BufferGeometry]。</p>
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<h3>.parameters</h3>
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<p>
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一个包含着构造函数中每个参数的对象。在对象实例化之后，对该属性的任何修改都不会改变这个几何体。
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</p>
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<h2>方法(Methods)</h2>
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<p>共有方法请参见其基类[page:BufferGeometry]。</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/[path].js src/[path].js]
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</p>
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</body>
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</html>
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