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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<base href="../../../" />
<script src="list.js"></script>
<script src="page.js"></script>
<link type="text/css" rel="stylesheet" href="page.css" />
</head>
<body>
[page:BufferGeometry] →
<h1>边缘几何体（[name]）</h1>
<p class="desc">这可以作为一个辅助对象来查看[page:Geometry Geometry]的边缘。</p>
<h2>示例</h2>
[example:webgl_helpers helpers]
<code>
var geometry = new THREE.BoxBufferGeometry( 100, 100, 100 );
var edges = new THREE.EdgesGeometry( geometry );
var line = new THREE.LineSegments( edges, new THREE.LineBasicMaterial( { color: 0xffffff } ) );
scene.add( line );
</code>
<h2>构造器</h2>
<h3>[name]( [param:Geometry geometry], [param:Integer thresholdAngle] )</h3>
<p>
geometry — 任何一个几何体对象。<br />
thresholdAngle — 仅当相邻面的法线之间的角度（单位为角度）超过这个值时，才会渲染边缘。默认值为1。
</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>
</body>
</html>
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