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102 lines
3.1 KiB
102 lines
3.1 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:Curve] → [page:CurvePath] → [page:Path] →
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<h1>形状（[name]）</h1>
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<p class="desc">
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使用路径以及可选的孔洞来定义一个二维形状平面。
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它可以和[page:ExtrudeGeometry]、[page:ShapeGeometry]一起使用，获取点，或者获取三角面。
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</p>
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<h2>代码示例</h2>
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<code>
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const heartShape = new THREE.Shape();
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heartShape.moveTo( 25, 25 );
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heartShape.bezierCurveTo( 25, 25, 20, 0, 0, 0 );
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heartShape.bezierCurveTo( - 30, 0, - 30, 35, - 30, 35 );
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heartShape.bezierCurveTo( - 30, 55, - 10, 77, 25, 95 );
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heartShape.bezierCurveTo( 60, 77, 80, 55, 80, 35 );
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heartShape.bezierCurveTo( 80, 35, 80, 0, 50, 0 );
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heartShape.bezierCurveTo( 35, 0, 25, 25, 25, 25 );
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const extrudeSettings = { depth: 8, bevelEnabled: true, bevelSegments: 2, steps: 2, bevelSize: 1, bevelThickness: 1 };
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const geometry = new THREE.ExtrudeGeometry( heartShape, extrudeSettings );
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const mesh = new THREE.Mesh( geometry, new THREE.MeshPhongMaterial() );
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</code>
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<h2>例子</h2>
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<p>
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[example:webgl_geometry_shapes geometry / shapes ]<br/>
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[example:webgl_geometry_extrude_shapes geometry / extrude / shapes ]<br/>
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[example:webgl_geometry_extrude_shapes2 geometry / extrude / shapes2 ]
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</p>
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<h2>构造函数</h2>
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<h3>[name]( [param:Array points] )</h3>
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<p>
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points -- (optional) 一个[page:Vector2 Vector2]数组。<br /><br />
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从点来创建一个Shape。第一个点定义了偏移量，
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接下来的点被作为[page:LineCurve LineCurves]加入到[page:CurvePath.curves curves]中。<br /><br />
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如果没有点被指定，一个空的形状将会被创建，且[page:.currentPoint]将会被设为原点。
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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:Path]。</p>
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<h3>[property:String uuid]</h3>
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<p>
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该类所创建的实例的[link:http://en.wikipedia.org/wiki/Universally_unique_identifier UUID]。它是自动被指定的，因此它不应当被编辑、更改。
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</p>
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<h3>[property:Array holes]</h3>
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<p>一个[page:Path paths]数组，定义了形状上的孔洞。</p>
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<h2>方法</h2>
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<p>共有方法请参见其基类[page:Path]。</p>
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<h3>[method:Array extractPoints]( [param:Integer divisions] )</h3>
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<p>
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divisions -- 结果的精细程度（细分数）。<br /><br />
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在形状以及[page:.holes]（孔洞）数组上调用[page:Curve.getPoints getPoints]，并返回一个来自于：
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<code>
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{
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shape
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holes
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}
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</code>
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的对象，其中的形状和孔洞是[page:Vector2 Vector2]数组。
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</p>
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<h3>[method:Array getPointsHoles]( [param:Integer divisions] )</h3>
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<p>
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divisions -- 结果的精细程度（细分数）。<br /><br />
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获取一个表示形状上的孔洞的[page:Vector2 Vector2s]数组。
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</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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