javascript
/
three.js
mirror de https://github.com/tazdij/three.js.git


			
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		[page:Curve] &rarr;

		<h1>二维二次贝塞尔曲线（[name]）</h1>

		<p class="desc">
			创建一条平滑的二维
			<a href="http://en.wikipedia.org/wiki/B%C3%A9zier_curve#mediaviewer/File:B%C3%A9zier_2_big.gif" target="_blank">二次贝塞尔曲线</a>，
			由起点、终点和一个控制点所定义。
		</p>

		<h2>代码示例</h2>

		<code>
		var curve = new THREE.QuadraticBezierCurve(
			new THREE.Vector2( -10, 0 ),
			new THREE.Vector2( 20, 15 ),
			new THREE.Vector2( 10, 0 )
		);

		var points = curve.getPoints( 50 );
		var geometry = new THREE.BufferGeometry().setFromPoints( points );

		var material = new THREE.LineBasicMaterial( { color : 0xff0000 } );

		//Create the final object to add to the scene
		var curveObject = new THREE.Line( geometry, material );
		</code>

		<h2>构造函数</h2>


		<h3>[name]( [param:Vector2 v0], [param:Vector2 v1], [param:Vector2 v2] )</h3>
		<p>
			[page:Vector2 v0] – 起点<br/>
			[page:Vector2 v1] – 中间的控制点<br/>
			[page:Vector2 v2] – 终点<br/>
		</p>


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

		<h3>[property:Vector2 v0]</h3>
		<p>起点</p>

		<h3>[property:Vector2 v1]</h3>
		<p>控制点</p>

		<h3>[property:Vector2 v2]</h3>
		<p>终点</p>

		<h2>方法</h2>
		<p>共有方法请参见其基类[page:Curve]。</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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