确定一个网格是否在三个j中的另一个网格内 [英] Determine if a mesh is inside another mesh in threejs

问题描述

我正在玩三个JS，并想确定一个网格是否完全位于另一个网格内。我写了一个小机器人，该机器人应该进入由玩家导航的家庭箱子。我知道如何检测碰撞，但是有没有简单的方法来检测对象是否在另一个对象内？

我可以计算中心homebox的位置并与机器人进行比较如果你制作了一个边界框（> THREE），那么你可以使用一个边界框（ .Box3 ）你可以使用'robot'和'home' containsBox 方法。所以像这样：



  var robotBB = new THREE.Box3（）。setFromObject（robot）; 
 var homeBB = new THREE.Box3（）。setFromObject（home）
  

其中 home 和 robot 是您的对象。现在你可以这样做：

  var robotIsHome = homeBB.containsBox（robotBB）; 
  

robotIsHome c $ c> robotBB 完全位于 homeBB 中。

I am playing with three JS and want to determine if a mesh is fully inside another mesh. I wrote a little robot which should run into a home box navigated by the player. I know how to detect collision, but is there an easy way to detect if an object is inside another object?

I could calculate center Position of the homebox and compare to robot Position, but maybe there is something build in to threejs.

解决方案

If you make a boundingBox (THREE.Box3) for both the 'robot' and the 'home' you can use the containsBox method. So something like this:

var robotBB = new THREE.Box3().setFromObject(robot);
var homeBB = new THREE.Box3().setFromObject(home)

Where home and robot are your objects. Now you can do:

var robotIsHome = homeBB.containsBox(robotBB);

robotIsHome will be true if the robotBB is completely inside homeBB.

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