First of all, thanks Serge for the helpful reply to the last post !
Using the UV parameters for a surface, I would like the user to be able to move a vector along a U or V curve of a surface.
Can anyone please advise me on how to get a vector to latch the UV surface.
The second related question is - any idea of how to obtain the UV parametric co-ordinates at a point where my vector is on the UV surface.
Thanks a million,