Concept: Mapping irregular shapes (cartoons, sprites) to triangles in OpenGL ES

Posted by Moshe on Stack Overflow See other posts from Stack Overflow or by Moshe
Published on 2010-05-16T01:55:33Z Indexed on 2010/05/16 2:00 UTC
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concepts

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opengl-es

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iphone

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texture-mapping

I understand how mapping a triangle texture to a triangle works, but how do you map other things?

I can't see myself mapping a circle onto a triangle. If it were a quad (square), I could see it happening, but why would a graphic not get warped on a triangle?

EDIT:

Bonus question: What are some good OpenGL ES tutorials online? Videos and articles count. (I've seen the Stanford University stuff on iTunes U and think it's excellent, but I want more.)

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