quaternion camera rotation question
Author
I think I see the problem, the hud model is rotating around it's own local axes...which only works when the global camera is very close to its default orientation. If you move the camera around, it messes up. Now to figure out a solution... :)
Author
Lets say I was doing a split-screen or a multiplayer game, something where there are 2 ships flying around in space. Ship 1 is looking at ship 2. Meanwhile, Ship 2 is moving his mouse around and rotating around in the world. I know what his camera quat/matrix is (from his point of view). Looking at him from ship 1, what rotation do I need to apply when drawing ship 2 so that he is oriented correctly from ship 1's perspective?
Quote:Lets say I was doing a split-screen or a multiplayer game, something where there are 2 ships flying around in space. Ship 1 is looking at ship 2. Meanwhile, Ship 2 is moving his mouse around and rotating around in the world. I know what his camera quat/matrix is (from his point of view). Looking at him from ship 1, what rotation do I need to apply when drawing ship 2 so that he is oriented correctly from ship 1's perspective?Well, I'm not sure if I follow, but here's a guess. If A is ship 1's rotation and B is ship 2's rotation, you want to find a rotation C that represents B in A's space. This should be:
Quaternion C = A.Conjugate()*B;
Author
That works. Thank you very much! I wish I knew quaternion math better rather than fumbling my way through it. But this is the first time I'm having to deal with gimbal lock in a game/project.
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