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three.js
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		[page:Object3D] &rarr;

		<h1>线（[name]）</h1>

		<p class="desc">
			一条连续的线。<br /><br />

			它几乎和[page:LineSegments]是一样的，唯一的区别是它在渲染时使用的是[link:https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/drawElements gl.LINE_STRIP]，
			而不是[link:https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/drawElements gl.LINES]。
		</p>

		<h2>代码示例</h2>

		<code>
		const material = new THREE.LineBasicMaterial({
			color: 0x0000ff
		});

		const points = [];
		points.push( new THREE.Vector3( - 10, 0, 0 ) );
		points.push( new THREE.Vector3( 0, 10, 0 ) );
		points.push( new THREE.Vector3( 10, 0, 0 ) );

		const geometry = new THREE.BufferGeometry().setFromPoints( points );

		const line = new THREE.Line( geometry, material );
		scene.add( line );
		</code>


		<h2>构造器</h2>

		<h3>[name]( [param:BufferGeometry geometry], [param:Material material] )</h3>

		<p>
		[page:BufferGeometry geometry] —— 表示线段的顶点，默认值是一个新的[page:BufferGeometry]。<br />
		[page:Material material] —— 线的材质，默认值是一个新的具有随机颜色的[page:LineBasicMaterial]。<br />
		</p>

		<h2>属性</h2>
		<p>共有属性请参见其基类[page:Object3D]。</p>


		<h3>[property:BufferGeometry geometry]</h3>
		<p>表示线段的顶点。</p>

		<h3>[property:Boolean isLine]</h3>
		<p>
			Read-only flag to check if a given object is of type [name].
		</p>

		<h3>[property:Material material]</h3>
		<p>线的材质。</p>

		<h3>[property:Array morphTargetInfluences]</h3>
		<p>
		An array of weights typically from 0-1 that specify how much of the morph is applied.
		Undefined by default, but reset to a blank array by [page:.updateMorphTargets]().
		</p>

		<h3>[property:Object morphTargetDictionary]</h3>
		<p>
		A dictionary of morphTargets based on the morphTarget.name property.
		Undefined by default, but rebuilt [page:.updateMorphTargets]().
		</p>

		<h2>方法</h2>
		<p>共有方法请参见其基类 [page:Object3D]。</p>

		<h3>[method:this computeLineDistances]()</h3>
		<p>
			计算[page:LineDashedMaterial]所需的距离的值的数组。
			对于几何体中的每一个顶点，这个方法计算出了当前点到线的起始点的累积长度。
		</p>

		<h3>[method:undefined raycast]( [param:Raycaster raycaster], [param:Array intersects] )</h3>
		<p>
			在一条投射出去的[page:Ray]（射线）和这条线之间产生交互。
			[page:Raycaster.intersectObject]将会调用这个方法。
		</p>

		<h3>[method:undefined updateMorphTargets]()</h3>
		<p>
		Updates the morphTargets to have no influence on the object. Resets the
		[page:.morphTargetInfluences] and [page:.morphTargetDictionary] properties.
		</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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