You can not select more than 25 topics
			Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
		
		
		
		
			
				
					303 lines
				
				10 KiB
			
		
		
			
		
	
	
					303 lines
				
				10 KiB
			| 
								 
											3 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>
							 | 
						||
| 
								 | 
							
										<h1>[name]</h1>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<p class="desc">
							 | 
						||
| 
								 | 
							
											表示三维空间中的一个轴对齐包围盒(axis-aligned bounding box,AABB)。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h2>代码示例</h2>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<code>
							 | 
						||
| 
								 | 
							
										const box = new THREE.Box3();
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										const mesh = new THREE.Mesh(
							 | 
						||
| 
								 | 
							
											new THREE.SphereGeometry(),
							 | 
						||
| 
								 | 
							
											new THREE.MeshBasicMaterial()
							 | 
						||
| 
								 | 
							
										);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										// ensure the bounding box is computed for its geometry
							 | 
						||
| 
								 | 
							
										// this should be done only once (assuming static geometries)
							 | 
						||
| 
								 | 
							
										mesh.geometry.computeBoundingBox();
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										// ...
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										// in the animation loop, compute the current bounding box with the world matrix
							 | 
						||
| 
								 | 
							
										box.copy( mesh.geometry.boundingBox ).applyMatrix4( mesh.matrixWorld );
							 | 
						||
| 
								 | 
							
										</code>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h2>构造器(Constructor)</h2>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[name]( [param:Vector3 min], [param:Vector3 max] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 min] - (参数可选) [page:Vector3] 表示包围盒的下边界。
							 | 
						||
| 
								 | 
							
										默认值是( + Infinity, + Infinity, + Infinity )。<br>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										[page:Vector3 max] - (参数可选) [page:Vector3] 表示包围盒的上边界。
							 | 
						||
| 
								 | 
							
										默认值是( - Infinity, - Infinity, - Infinity )。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										创建一个以max和min为边界的包围盒。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h2>属性(Properties)</h2>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[property:Boolean isBox3]</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
											Read-only flag to check if a given object is of type [name].
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[property:Vector3 min]</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
											[page:Vector3] 表示包围盒的下边界。<br />
							 | 
						||
| 
								 | 
							
											默认值是( + Infinity, + Infinity, + Infinity )。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[property:Vector3 max]</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
											[page:Vector3] 包围盒的(x, y, z)上边界。<br />
							 | 
						||
| 
								 | 
							
											默认值是 ( - Infinity, - Infinity, - Infinity ).
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h2>方法(Methods)</h2>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this applyMatrix4]( [param:Matrix4 matrix] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Matrix4 matrix] - 要应用的 [page:Matrix4] <br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										使用传入的矩阵变换Box3(包围盒8个顶点都会乘以这个变换矩阵)。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Vector3 clampPoint]( [param:Vector3 point], [param:Vector3 target] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 point] - 需要做clamp 的坐标 [page:Vector3]。 <br>
							 | 
						||
| 
								 | 
							
										[page:Vector3 target] — 结果将会被拷贝到这个对象中<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										使这个点[page:Vector3 point] [link:https://en.wikipedia.org/wiki/Clamping_(graphics) Clamps](处于范围内) 处于包围盒边界范围内。<br />
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Box3 clone]()</h3>
							 | 
						||
| 
								 | 
							
										<p>返回一个与该包围盒子有相同下边界[page:.min min] 和上边界 [page:.max max]的新包围盒。</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Boolean containsBox]( [param:Box3 box] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Box3 box] - 需要检测是否在当前包围盒内的 [page:Box3 Box3]。<br /><br />
							 | 
						||
| 
								 | 
							
										传入的 [page:Box3 box] 整体都被包含在该对象中则返回true。如果他们两个包围盒是一样的也返回true。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Boolean containsPoint]( [param:Vector3 point] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 point] - 需要检测是否在当前包围盒内的 [page:Vector3]。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										当传入的值 [page:Vector3 point] 在包围盒内部或者边界都会返回true。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this copy]( [param:Box3 box] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Box3 box]  - 需要复制的包围盒 [page:Box3] 。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										将传入的值 [page:Box3 box] 中的 [page:.min min] 和 [page:.max max] 拷贝到当前对象。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Float distanceToPoint]( [param:Vector3 point] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 point] - 用来测试距离的点 [page:Vector3]。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										返回这个box的任何边缘到指定点的距离。如果这个点位于这个盒子里,距离将是0。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Boolean equals]( [param:Box3 box] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Box3 box] - 将box与当前对象做比较。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										返回true如果传入的值与当前的对象 [page:Box3 box] 有相同的上下边界。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this expandByObject]( [param:Object3D object] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Object3D object] - 包裹在包围盒中的3d对象 [page:Object3D]。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										扩展此包围盒的边界,使得对象及其子对象在包围盒内,包括对象和子对象的世界坐标的变换。
							 | 
						||
| 
								 | 
							
										该方法可能会导致一个比严格需要的更大的框。
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this expandByPoint]( [param:Vector3 point] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 point] - 需要在包围盒中的点 [page:Vector3]。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										扩展这个包围盒的边界使得该点([page:Vector3 point])在包围盒内。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this expandByScalar]( [param:Float scalar] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Float scalar] - 扩展包围盒的比例。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										按 [page:Float scalar] 的值展开盒子的每个维度。如果是负数,盒子的尺寸会缩小。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this expandByVector]( [param:Vector3 vector] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 vector] - 扩展包围盒的数值 [page:Vector3] 。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										按 [page:Vector3 vector] 每个纬度的值展开这个箱子。
							 | 
						||
| 
								 | 
							
										这个盒子的宽度将由 [page:Vector3 vector] 的x分量在两个方向上展开。
							 | 
						||
| 
								 | 
							
										这个盒子的高度将由 [page:Vector3 vector] 两个方向上的y分量展开。
							 | 
						||
| 
								 | 
							
										这个盒子的深度将由 [page:Vector3 vector] z分量在两个方向上展开。
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Sphere getBoundingSphere]( [param:Sphere target] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Sphere target] — 如果指定了target ,结果将会被拷贝到target。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										获取一个包围球 [page:Sphere]。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Vector3 getCenter]( [param:Vector3 target] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 target] — 如果指定了target ,结果将会被拷贝到target。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										返回包围盒的中心点 [page:Vector3]。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Vector3 getParameter]( [param:Vector3 point], [param:Vector3 target] ) </h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 point] - [page:Vector3].<br/>
							 | 
						||
| 
								 | 
							
										[page:Vector3 target] — 如果指定了target ,结果将会被拷贝到target。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										返回一个点为这个盒子的宽度、高度和深度的比例。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Vector3 getSize]( [param:Vector3 target] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 target] — 如果指定了target ,结果将会被拷贝到target。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										返回包围盒的宽度,高度,和深度。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this intersect]( [param:Box3 box] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Box3 box] - 与包围盒的交集<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										计算此包围盒和 [page:Box3 box] 的交集,将此框的上界设置为两个框的max的较小部分,
							 | 
						||
| 
								 | 
							
										将此包围盒的下界设置为两个包围盒的min的较大部分。如果两个包围盒不相交,则清空此包围盒。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Boolean intersectsBox]( [param:Box3 box] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Box3 box] - 用来检测是否相交的包围盒<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										确定当前包围盒是否与传入包围盒[page:Box3 box] 相交。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Boolean intersectsPlane]( [param:Plane plane] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Plane plane] - 用来检测是否相交的 [page:Plane]。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										确定当前包围盒是否与平面 [page:Plane plane] 相交。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Boolean intersectsSphere]( [param:Sphere sphere] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Sphere sphere] - 用来检测是否相交的球体 [page:Sphere]。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										确定当前包围盒是否与球体 [page:Sphere sphere] 相交。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Boolean intersectsTriangle]( [param:Triangle triangle] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Triangle triangle] - 用来检测是否相交的三角形 [page:Triangle]。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										确定当前包围盒是否与三角形 [page:Triangle triangle] 相交。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:Boolean isEmpty]()</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										如果这个盒子包含0个顶点,则返回true。<br>
							 | 
						||
| 
								 | 
							
										注意,下界和上界相等的方框仍然包含一个点,即两个边界共享的那个点。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this makeEmpty]()</h3>
							 | 
						||
| 
								 | 
							
										<p>清空包围盒。</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this set]( [param:Vector3 min], [param:Vector3 max] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 min] - [page:Vector3] 表示下边界每个纬度(x,y,z)的值。<br />
							 | 
						||
| 
								 | 
							
										[page:Vector3 max] - [page:Vector3] 表示上边界每个纬度(x,y,z)的值。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										设置包围盒上下边界每个纬度(x,y,z)的值。<br>
							 | 
						||
| 
								 | 
							
										请注意,此方法仅复制给定对象的值。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this setFromArray]( [param:Array array] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										array - 数组当中的所有的点都将被包围盒包裹。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										设置包围盒的上下边界使得数组 *array* 中的所有点的点都被包含在内。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this setFromBufferAttribute]( [param:BufferAttribute attribute] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:BufferAttribute attribute] - 位置的缓冲数据,包含在返回的包围盒内。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										设置此包围盒的上边界和下边界,以包含 [page:BufferAttribute attribute] 中的所有位置数据。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this setFromCenterAndSize]( [param:Vector3 center], [param:Vector3 size] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 center], - 包围盒所要设置的中心位置。 <br>
							 | 
						||
| 
								 | 
							
										[page:Vector3 size] - 包围盒所要设置的x、y和z尺寸(宽/高/长)。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										将当前包围盒的中心点设置为 [page:Vector3 center] ,并将此包围盒的宽度,高度和深度设置为大小指定 [page:Vector3 size] 的值。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this setFromObject]( [param:Object3D object] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Object3D object] - 用来计算包围盒的3D对象 [page:Object3D]。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										计算和世界轴对齐的一个对象 [page:Object3D] (含其子对象)的包围盒,计算对象和子对象的世界坐标变换。
							 | 
						||
| 
								 | 
							
										该方法可能会导致一个比严格需要的更大的框。
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this setFromPoints]( [param:Array points] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Array points] - 计算出的包围盒将包含数组中所有的点 [page:Vector3 Vector3s]<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										设置此包围盒的上边界和下边界,以包含数组 [page:Array points] 中的所有点。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this translate]( [param:Vector3 offset] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Vector3 offset] - 偏移方向和距离。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										给包围盒的上下边界添加偏移量 [page:Vector3 offset],这样可以有效的在3D空间中移动包围盒。
							 | 
						||
| 
								 | 
							
										偏移量为 [page:Vector3 offset] 大小。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h3>[method:this union]( [param:Box3 box] )</h3>
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
										[page:Box3 box] - 将被用于与该盒子计算并集的盒子。<br /><br />
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										在 [page:Box3 box] 参数的上边界和已有box对象的上边界之间取较大者,而对两者的下边界取较小者,这样获得一个新的较大的联合盒子。
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<h2>源码(Source)</h2>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
										<p>
							 | 
						||
| 
								 | 
							
											[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
							 | 
						||
| 
								 | 
							
										</p>
							 | 
						||
| 
								 | 
							
									</body>
							 | 
						||
| 
								 | 
							
								</html>
							 |