Hi there, Does anyone have any experience with interactive free-form deformations and OpenGL? I am trying to find some simple source code for this kind of thing. Any advice would be very much appreciated. Thanks Nehe for this site! George g.scott@oneteldsl.net

Well, this does not looks exactly OpenGL-related to me.
Once you collected the input, you just process it and use GL to display the modified results... The interface and processing you use is quite up to you.

Maybe you may want to select the vertex which is over the mouse pointer and drag it away. GL won''t help. The interactive thing is the problem here.

So I cannot help you, I post this to let you understand that the problem is not API-related so you may be able to find help outside GL-related topics.

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Original post by Krohm
GL won''t help.

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Not entirely true. OpenGL has supports the feedback mode which will allow you to successfully implement raycasting which is basically what he''s looking for. The question here is whether it is rational to do it this way.

Never do anything that is a waste of time and be prepared to wage long tedious wars over this principle - Michael O''Connor