摘要
在曲面求交算法中，初始跟踪点的确定和交线分支的跟踪是最关键的两个问题．本文总结了用平面向量场确定初始跟踪点的算法，给出了使用曲率分析精确计算跟踪方向，并估计跟踪步长的方法．应用平面向量场和曲率分析，作者实现了高效可靠的ＮＵＲＢＳ曲面求交算法．
The techniques for obtaining initial tracing points and tracing intersection branches are the most important issues in surface intersection algorithm. This paper reviews the plane vector field method which is exploited to get initial tracing points,and gives the relation between normal curvature and tracing direction. Based on the plane vector field method and curvature analysis, a robust algorithm of surface intersection is implemented.
出处
《计算机学报》
EI
CSCD
北大核心
1997年第12期1074-1080,共7页
Chinese Journal of Computers
关键词
曲面求交
平面向量场
曲率分析
CAD
Surface intersection
plane vector field
tracing direction
tracing step.
