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2 years ago
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="utf-8" />
<base href="../../../" />
<script src="page.js"></script>
<link type="text/css" rel="stylesheet" href="page.css" />
</head>
<body>
[page:BufferGeometry] &rarr;
<h1>管道缓冲几何体([name])</h1>
<p class="desc">创建一个沿着三维曲线延伸的管道。</p>
<iframe id="scene" src="scenes/geometry-browser.html#TubeGeometry"></iframe>
<script>
// iOS iframe auto-resize workaround
if ( /(iPad|iPhone|iPod)/g.test( navigator.userAgent ) ) {
const scene = document.getElementById( 'scene' );
scene.style.width = getComputedStyle( scene ).width;
scene.style.height = getComputedStyle( scene ).height;
scene.setAttribute( 'scrolling', 'no' );
}
</script>
<h2>代码示例</h2>
<code>
class CustomSinCurve extends THREE.Curve {
constructor( scale = 1 ) {
super();
this.scale = scale;
}
getPoint( t, optionalTarget = new THREE.Vector3() ) {
const tx = t * 3 - 1.5;
const ty = Math.sin( 2 * Math.PI * t );
const tz = 0;
return optionalTarget.set( tx, ty, tz ).multiplyScalar( this.scale );
}
}
const path = new CustomSinCurve( 10 );
const geometry = new THREE.TubeGeometry( path, 20, 2, 8, false );
const material = new THREE.MeshBasicMaterial( { color: 0x00ff00 } );
const mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
</code>
<h2>构造器</h2>
<h3>[name]([param:Curve path], [param:Integer tubularSegments], [param:Float radius], [param:Integer radialSegments], [param:Boolean closed])</h3>
<p>
path — [page:Curve] - 一个由基类[page:Curve]继承而来的3D路径。 Default is a quadratic bezier curve.<br />
tubularSegments — [page:Integer] - 组成这一管道的分段数,默认值为64。<br />
radius — [page:Float] - 管道的半径,默认值为1。<br />
radialSegments — [page:Integer] - 管道横截面的分段数目,默认值为8。<br />
closed — [page:Boolean] 管道的两端是否闭合,默认值为false。<br />
</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>
<h3>[property:Array tangents]</h3>
<p>
一个[page:Vector3]切线数组。
</p>
<h3>[property:Array normals]</h3>
<p>
一个[page:Vector3]法线数组。
</p>
<h3>[property:Array binormals]</h3>
<p>
一个[page:Vector3]次法线数组。
</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>