公式很复杂,看不懂了,呵呵Start your curve or surface by calling gluBeginCurve() or gluBeginSurface().Generate and render your curve or surface. Call gluNurbsCurve() or gluNurbsSurface() at least once with the control points (rational or nonrational), knot sequence, and order of the polynomial basis function for your NURBS object. You might call these functions additional times to specify surface normals and/or texture coordinates.Call gluEndCurve() or gluEndSurface() to complete the curve or surface.在绘制曲面的同时 把边缘4条曲线画出来,加粗,看效果
不是可以通过正算,根据控制点求出型值点吗?我已经画出两个了,就是不知道如何连接,纠结!控制点都有,就是没找到算法,大部分都是反算的。那你觉得我这样画有厚度的方法可行吗?还是有其他画法?