The efficiency of updating AABB bounding volume tree is one of the bottlenecks of collision detection algorithms using AABB trees.
该算法首先按照一定的规则建立起树形分层包围盒，在碰撞检测的时候，可利用上次的检测结果，起到了加速的作用。
Collision detection was implemented through constructing bounding volume tree and adapting collision detection algorithm based on enveloping tree.
通过建立包围盒树，采用基于包络树的碰撞检测算法实现碰撞检测。
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