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- <!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:Object3D] → [page:Line] → [page:LineSegments] →
- <h1>[name]</h1>
- <p class="desc">
- 用于图形化地展示对象世界轴心对齐的包围盒的辅助对象。The actual bounding box is handled with [page:Box3], this is just a visual helper for debugging.
- It can be automatically resized with the [page:BoxHelper.update] method when the object it's created from is transformed.
- 注意:要想能正常运行,目标对象必须包含 [page:BufferGeometry] ,
- 所以当目标对象是精灵 [page:Sprite Sprites] 时将不能正常运行.
- </p>
- <h2>代码示例</h2>
- <code>
- const sphere = new THREE.SphereGeometry();
- const object = new THREE.Mesh( sphere, new THREE.MeshBasicMaterial( 0xff0000 ) );
- const box = new THREE.BoxHelper( object, 0xffff00 );
- scene.add( box );
- </code>
- <h2>例子</h2>
- <p>
- [example:webgl_helpers WebGL / helpers]<br/>
- [example:webgl_loader_nrrd WebGL / loader / nrrd]<br/>
- [example:webgl_buffergeometry_drawrange WebGL / buffergeometry / drawrange]
- </p>
- <h2>构造函数</h2>
- <h3>[name]( [param:Object3D object], [param:Color color] )</h3>
- <p>
- [page:Object3D object] -- (可选的) 被展示世界轴心对齐的包围盒的对象.<br />
- [page:Color color] -- (可选的) 线框盒子的16进制颜色值. 默认为 0xffff00.<br /><br />
- 创建一个新的线框盒子包围指定的对象. 内部使用 [page:Box3.setFromObject]
- 方法来计算尺寸. 注意:此线框盒子将包围对象的所有子对象.
- </p>
- <h2>属性</h2>
- <p>请到基类 [page:LineSegments] 页面查看公共属性.</p>
- <h2>方法</h2>
- <p>请到基类 [page:LineSegments] 页面查看公共方法.</p>
- <h3>[method:undefined update]()</h3>
- <p>
- 更新辅助对象的几何体,与目标对象尺寸
- 保持一致, 包围目标对象所有子对象. 请查看 [page:Box3.setFromObject].
- </p>
- <h3>[method:this setFromObject]( [param:Object3D object] )</h3>
- <p>
- [page:Object3D object] - 用于创建辅助对象的目标 [page:Object3D] 对象.<br /><br />
- 更新指定对象的线框盒子.
- </p>
- <h2>源码</h2>
- <p>
- [link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
- </p>
- </body>
- </html>
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