一种风吹树动模拟的新方法  

New method about tree's movement in wind

作　　者：王春华[1] 韩栋[2] 张洪飞[3] 

机构地区：[1]黄淮学院计算机科学系,河南驻马店463000 [2]黄淮学院网络管理中心,河南驻马店463000 [3]黄淮学院电子科学与工程系,河南驻马店463000

出　　处：《计算机应用研究》2009年第7期2757-2758,2764,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(60073057)

摘　　要：目前已有的关于树在风中运动的模拟方法存在两个缺点:计算量太大,难以实时模拟;成像粗糙,真实感不强。基于此,提出了一种新的模拟树木在风中运动的方法。本方法对树的基本模型进行抽象表示,采用材料力学知识详细分析树枝的受力及运动过程,并推导出空间位置的动态变化公式;选用向量表示风和节间,通过向量的运算定型模拟树枝因受力引起的运动。该模拟方法的时间复杂度仅为O(n)。实验表明,其运算速度快,模拟结果真实,可应用于实时模拟的虚拟场合中。As essential element of the nature, trees attract much attention in computer animation and virtual reality. The exis- ted simulation methods about trees have two disadvantages ： tremendous computation or rough imaging. Based on the abstract of trees and the detailed mechanical analysis, deduced one formula about trees＇ movement. Proposed a novel method to simulate the movement of trees, applied vector to denote wind and internodes. Through adjustment of the vector, used the operation result of vector to show internodes＇ position. The time complexity of the proposed method is only O（n）. The experiment shows that the method has low computation and the simulation shapes are true of nature.

关 键 词：树 风 动态模拟 材料力学 向量 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]