Evaluating points on a NURBS surface

I am using NURBS surfaces to create smoothed renderings of landscapes.
The typical size of the problem ranges up to about 500 X 500 control
points. The rendering is working well but I now need to draw arbitrary
polylines over the surfaces between evaluated points at u,v on the
surface. I can do this on small sample data sets with Bezier curves in
OpenGL using the glMap3f() evaluator and then doing the evaluation
with glEvalCoord2f(). Is there any way to do the same thing using the
gluNurbsSurface() function? Any insights or pointers to a better way
of doing things would be much appreciated!
Jim
.

Relevant Pages

  • Re: Heinkel He 162
    ... as it gets close to it's max ceiling. ... the wings and control surfaces to maintain altitude. ... Until the drag of the increased incident of the wings and control ...
    (rec.aviation.military)
  • Re: Heinkel He 162
    ... higher angle of attack the control and wing surfaces must be at ... the wings and control surfaces to maintain altitude. ... Until the drag of the increased incident of the wings and control surfaces more than counteract. ...
    (rec.aviation.military)
  • Re: if the insurgents dont get you.... the shoddy KBR wiring at the base might....
    ... You have opinions, I have facts.. ... navigation, automated air traffic control functions, and advanced ... operator and the final control actuators or surfaces." ... "locked to a beacon" woudln't have made a turn liek Hanhours, ...
    (uk.politics.misc)
  • Re: Renishaw interface to MX2 control
    ... interface to a Yasnac MX2 control? ... Like to be able to probe ... 3D surfaces. ... do this with a 20 year old control. ...
    (alt.machines.cnc)
  • Re: Heinkel He 162
    ... higher angle of attack the control and wing surfaces must be at ... as it gets close to it's max ceiling. ... the wings and control surfaces to maintain altitude. ...
    (rec.aviation.military)