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three.js
spiegel van https://github.com/mrdoob/three.js.git


			
				
					
						
						
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		[page:BufferGeometry] &rarr;

		<h1>车削缓冲几何体（[name]）</h1>

		<p class="desc">创建具有轴对称性的网格，比如花瓶。车削绕着Y轴来进行旋转。</p>

		<iframe id="scene" src="scenes/geometry-browser.html#LatheGeometry"></iframe>

		<script>

		// iOS iframe auto-resize workaround

		if ( /(iPad|iPhone|iPod)/g.test( navigator.userAgent ) ) {

			const scene = document.getElementById( 'scene' );

			scene.style.width = getComputedStyle( scene ).width;
			scene.style.height = getComputedStyle( scene ).height;
			scene.setAttribute( 'scrolling', 'no' );

		}

		</script>

		<h2>代码示例</h2>

		<code>
		const points = [];
		for ( let i = 0; i < 10; i ++ ) {
			points.push( new THREE.Vector2( Math.sin( i * 0.2 ) * 10 + 5, ( i - 5 ) * 2 ) );
		}
		const geometry = new THREE.LatheGeometry( points );
		const material = new THREE.MeshBasicMaterial( { color: 0xffff00 } );
		const lathe = new THREE.Mesh( geometry, material );
		scene.add( lathe );
		</code>

		<h2>构造器</h2>

		<h3>[name]([param:Array points], [param:Integer segments], [param:Float phiStart], [param:Float phiLength])</h3>
		<p>
		points — 一个Vector2对象数组。每个点的X坐标必须大于0。 Default is an array with (0,-0.5), (0.5,0) and (0,0.5) which creates a simple diamond shape.<br />
		segments — 要生成的车削几何体圆周分段的数量，默认值是12。<br />
		phiStart — 以弧度表示的起始角度，默认值为0。<br />
		phiLength — 车削部分的弧度（0-2PI）范围，2PI将是一个完全闭合的、完整的车削几何体，小于2PI是部分的车削。默认值是2PI。
		</p>
		<p>
				基于参数创建一个LatheGeometry。
			</p>

		<h2>属性</h2>
		<p>共有属性请参见其基类[page:BufferGeometry]。</p>

		<h3>[property:Object parameters]</h3>
		<p>
				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。
		</p>

		<h2>方法(Methods)</h2>
		<p>共有方法请参见其基类[page:BufferGeometry]。</p>

		<h2>源代码</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
		</p>
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