Student_1138

01-07-2005, 01:55 AM

:confused:

I need to determine a set of points which lie on a surface (x,y,z coordinates for each point in the u and v directions) when given a knot

vector, control points and weights in NURBS format. I know that there are NURBS evaluators in openGL (glEvalCoord), similar to using a vertex, but I do not know how to obtain the actual coordinates for each point that it has generated from the evaluator (for each u and/or v input). Any help that you could provide would be helpful. Thank you.

I need to determine a set of points which lie on a surface (x,y,z coordinates for each point in the u and v directions) when given a knot

vector, control points and weights in NURBS format. I know that there are NURBS evaluators in openGL (glEvalCoord), similar to using a vertex, but I do not know how to obtain the actual coordinates for each point that it has generated from the evaluator (for each u and/or v input). Any help that you could provide would be helpful. Thank you.