Algorithm of trees preprocessor and implement in game engine
树型结构预处理算法及在游戏引擎中的实现

By analysis, taking Octree collision nodes creation as an example, Octree information was recorded into file by FILE I/O. So it only needs recursion one time at the beginning, and then what need to do is to get information by reading file when rendering, It can reduce time obviously which is spent on creating Octree by testing, It is a functional module in our newly-designed game engine.