一种计算空间封闭曲面正侧法向量的方法

摘要

In handling the surface of a 3D-ob ject with light,calculating the area of closed curve on the 3D-object and compu ting the volume of a 3D-object,the normal vector needs to be calculated.For this reason,this paper presents a brief and concise algorithm to calculate the norma lvector of 3D-object surfaces.%在三维物体表面光照处理、三维曲面上曲线 所围区域的计算以及三维物体体积计算等应用中，需要计算曲面正侧法向量。针对三角形网 格表示的空间封闭曲面，本文设计了一种计算曲面正侧法向量的简明算法。