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best quaternion atricle yet!

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This is the best of the quaternion articles i found yet. Only one question: This guy keeps his up vector constant (prolly a quake like game) How do I rotate the up vector aswell? Like in pitch, yaw and ROLL. Where roll changes the up vector? here''s the site: http://www.gamedev.net/reference/articles/article1997.asp Marty

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Guest Anonymous Poster
Well... if you know view vector A and right vector B, all you need to do is calculate cross product A x B

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