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joda
04-04-2005, 05:22 AM
Hi,

Im currently freezing down transformations for maxiumum performance in my ogl application. My toolkit is using Quaternions, how do I affect my vertice points in the triangles? I have solved the translation and scale but I have no idea of how to deal with quaternions?

anyone, please give me a hint, am I completely lost?

Thanks,

Mike

dorbie
04-04-2005, 03:55 PM
What do you mean you have handled translation and scale but not quaternions (rotation)?

Do you have a matrix, or are you transforming verts one at a time in software?

You really need to produce a single matrix that encapsulates all transformations and use the modelview matrix for the transformation. So build a matrix from your quaternion rotation, this page might help:

http://www.flipcode.com/documents/matrfaq.html

Specifically this:

http://www.flipcode.com/documents/matrfaq.html#Q54