曲面分割求交方法的实现

Implementation of Divide Technique for Surface Intersection

曲面求交是CAD/CAM中的重要问题,分割求交方法用得最多。但是在实现这种方法时,计算精度一直没有得到很好的解决。本文在实验的基础上指出,精度问题贯穿整个求交过程,各种错误现象由此而生。文章还介绍了作者在实现这一方法时在这方面的努力,但最后不得不指出,如果不彻底解决精度问题,这一方法的生命力将受到影响。

Although the divide method For intersection of two surfaces has been used popularly, there still remains a problem of numerical calculation accuracy to be solved. By many experiments it is pointed out that any kinds of wrong results in divide step or intersection step are caused by the calculation accuracy. Some efforts made by the author for implementing the divide method are described. But finally it is concluded that the life of the divide method for surface intersection would be influenced if the accuracy problem were not be solved completely.