三次Bezier曲线旋转面进行光线跟踪处理的求交算法

THE ALGORITHM OF FINDING INTERSECTION POINT FOR RAY TRACING TO TERNARY BEZIER CURVE ROTATING SURFACE

对景物进行光线跟踪处理以生成高度真实感图形时，对三次Ｂｅｚｉｅｒ曲线旋转面的求交是一个十分复杂的问题，文中推导了一种简单实用的算法解决上述问题。

In order to generate highrealistic images, ray tracing to the objects in the scene must beperformed. In the method of ray tracing , how to determine the first intersection point be-tween the ray and ternary Bezier curve rotating surface is a complex problem. In this thesis,a new simple and practical algorithm is proposed to solve the problem.