obtain value of a opengl nurb at a point. (how?)

[coldfire1]

Hi,

Can anyone please tell me how to obtain the value of a nurbs curve that is rendered using glmap at a point. My intention is to display a color map of the surface rather than a patch view. thanks much for the help.

coldfire1

Originally posted by coldfire1:
Can anyone please tell me how to obtain the value of a nurbs curve that is rendered using glmap at a point.For starters, you may want to look at feedback (see the bottom of this page).

http://www.rush3d.com/reference/opengl-redbook-1.1/chapter12.html