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50 lines
1.5 KiB
50 lines
1.5 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:Object3D] → [page:Line] →
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<h1>环线（[name]）</h1>
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<p class="desc">
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一条头尾相接的连续的线。<br /><br />
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它几乎和[page:Line]是相同的，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_LOOP]，
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而不是[link:https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/drawElements gl.LINE_STRIP]，
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它绘制一条直线到下一个顶点，并将最后一个顶点连回第一个顶点。
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</p>
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<h2>构造器</h2>
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<h3>[name]( [param:BufferGeometry geometry], [param:Material material] )</h3>
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<p>
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[page:BufferGeometry geometry] —— 表示环线上的点的顶点列表。<br />
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[page:Material material] —— 线的材质，默认值是[page:LineBasicMaterial LineBasicMaterial]。
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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:Line]。</p>
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<h3>[property:Boolean isLineLoop]</h3>
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<p>
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Read-only flag to check if a given object is of type [name].
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</p>
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<h2>方法</h2>
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<p>
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共有方法请参见其基类[page:Line]。</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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