摘要： 为建立逼真的树木模型，提出将树木模型分为静态和动态2种类型。采用拓展二维半建模方法和碰撞面算法建立树木静态模型。利用经典物理学中的动量定理计算对象在风场中所受的冲力，且与杨氏模量中的断裂极限值相比较，确定对象断裂或摆动等情况，以此构建树木动态模型。仿真结果证明，该方法能够快速高效地建立树木模型。

关键词: 拓展二维半建模, 碰撞测定, 矢量风, 断裂极限, 动量定理, 静态模型, 动态模型

Abstract: In order to establish the model of realistic trees, the tree model is divided into static model and dynamic model. The static modeling constructs with expanding two and a half dimensional modeling method and collision principle. The object suffers wind power that the force is calculated by momentum theorem. The value of rupture limit is compared with Young modulus. It is determined object to fracture or sway, and constructs tree dynamic model in the nature. Simulation results show that, using this method can quickly and efficiently build tree model.

Key words: expanding two and a half dimensional modeling, collision principle, vector wind, rupture limit, momentum theorem, static model, dynamic model

中图分类号: 

• TP391.9