计算机图形学中，所有的光滑曲线、曲面都采用线段或三角形逼近来模拟，但为了精确地表现曲线，通常需要成千上万个线段或三角形来逼近，这种方法对于计算机的硬件资源有相当高的要求。然而，许多有用的曲线、曲面在数学上只需要用少数几个参数（如控制点等）来

Packet : 基于VC++的OpenGL编程讲座之曲线和曲面.doc filelist

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