講述了軟體采用層次包圍盒方法進行碰撞檢測時，針對連續變形包圍盒樹的兩類
更新方法：靜態更新和動態更新，對靜態更新方法中的自上而下、自下而上和混合更新方法，動態更新方法中的離散法和連續法進行了分析，并利用實驗數據比較了各種算法在不同仿真環境下的運算速度。結果顯示，混合更新方法和連續法在虛擬現實環境中具有更好的性能。
關鍵詞：包圍盒更新方法；自上而下；自下而上；混合更新；運動包圍盒層次結構
Abstract: When deformable collision detection used the Bounding Volume Hierarchies
approach, two kinds of strategy for updating hierarchy in order to handle continuously
deforming:static and dynamic approaches were described.Top-down,bottom-up and hybrid
updating approaches of static method,discrete and continuous approaches of dynamic method were analyzed.Experiment data was used to compare all these methods with their compute speed in different simulation environments.The results show that, the hybrid and continuous approaches have better performance than other approaches in virtual reality environments.
Keywords: strategies for updating hierarchy;top-down;bottom-up;hybrid;kinetic bounding
volume hierarchies