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3d ball physics?

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I'm making a golf-style game and so far I can load heightmaps and detect collisions. I need to move onto collision response =) All of my collision stuff is based on sphere/triangle collision. Right now I'm just reflecting the velocity across the triangle's normal to simulate a bounce, but I need to put rolling physics in there too. Can anyone point me to a good paper about this sort of thing? I have a bunch of articles about torque (mostly as applied to billiards) but I need something that covers ball vs. arbitrary triangle stuff in 3d. Can anyone lend a hand?

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You probably want to look at impulse-based collision reaction.
See this (especially first 4 links):
http://physics.hardwire.cz/index.php?action=show&sortby=order&parent_id=31

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