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直线与高精度细分曲面交点快速计算方法

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Indexed by:期刊论文

Date of Publication:2013-05-15

Journal:大连理工大学学报

Included Journals:PKU、ISTIC、CSCD、Scopus

Volume:53

Issue:3

Page Number:376-381

ISSN No.:1000-8608

Key Words:直线与细分曲面求交;数据结构;分治策略;多级分割

Abstract:  为解决直线与高精度细分曲面求交效率低和稳定性差的问题,利用细分曲面网格拓扑结构特性,研究直线与Catmull-Clark细分曲面求交的高效方法。首先,构造一个新的数据结构,实现Catmull-Clark细分曲面的分片表示。然后,对每个细分曲面面片创建轴对称包围盒,结合包围盒干涉检测技术,快速排除不与直线相交的细分曲面面片,根据细分曲面面片网格拓扑结构特性,提出细分曲面面片多级分割技术。最后,通过一定级别的分割并结合轴对称包围盒干涉检测技术,快速锁定与直线相交的四边形面片并获得交点。

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