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basha
10-03-2002, 12:06 AM
hi all

i already snet my problem.i didnt get reply.
may be my question was not clear.

thats why i am sending one more.

actually
i am working in openGL's NURBS concept.
by using nurbs concept i am drawing curves and surfaces.

actually i wanto get peeling effect from the cube surface by moving this nurbs surfaces.

for that i am moving control points of that nurbs surfaces.
i.e hwen i am pressing one key on the keyboard i am moving the control points.

i want to move the control point the mouse pointer
on the dispaly window wherever i move the mouse pointer that specific control point should move to that point.

thsi si my problem.

thanking u
basha

mikael_aronsson
10-03-2002, 12:26 AM
Hi !

It's a bit tricky, you can always use gluProject and gluUnproject to mapīthe mouse to the OpenGL viewport, but if you have your curves and surfaces in 3D you have a problem, because you don't know the depth to go for, a solution in that case is to have a plane of some form that defines where you have the depth.

Mikael