strange setUpVector problem.

Malgodur · Post by **Malgodur** » Tue Jul 14, 2009 10:34 am

Im trying to change the upvector of fps camera scene node. But it dont work properly, please help, ill try to describe the problem:

(0,1,0) its default value and work properly

(0,-1,0) works allright but both mouse axis seem to be inverted

(1,0,0) , (0,0,1), etc act NUTS, camera view turn really strange when i move mouse, and its completly uncontrollable for common player.

do anyone know what cause this? Its the problem of camera itself or of its controls? (ps, Im trying to change the gravity ingame so change of upvector of camera is necessary)

Brainsaw · Post by **Brainsaw** » Tue Jul 14, 2009 11:08 am

I can't say for sure but I think the FPS camera does not use the up-vector to convert the mouse input. I think you'll have to either adapt the FPS camera or write your own.

hybrid · Post by **hybrid** » Tue Jul 14, 2009 11:43 am

The up vector should always point out of the "head" of the camera, depending on its rotation. It does not have anything to do with gravity or the like. If you rotate the camera 180 degrees about the z axis (turning it head over) you should make the up vector (0,-1,0). Then the inversion is also correct, as you're flipped head over.