Also, if you're going to use gluLookAt, you might as well just do it yourself, as gluLookAt really isn't hard to implement. All you have to do is multiply the modelview matrix by this:

[ Sx Sy Sz -Px ][ Ux Uy Uz -Py ][ Fx Fy Fz -Pz ][  0  0  0  1 ]

Where S, U, F and P are the side, up, front and position vectors respectively, that define the camera frame.

Pretty easy isn't it? [smile]

It does not matter if you transform/rotate the MODELVIEW or the PROJECTION matrix. The result should be the same.
The only real difference is that transformations of the MODELVIEW matrix allow to transform single simples/objects, whereas the PROJECTION matrix always affects all simples/objects. That is only logical, because when you walk around the scene all objects should be transformed accordingly to yield a view from a given angle.

Quote:

Original post by GOD anubis It does not matter if you transform/rotate the MODELVIEW or the PROJECTION matrix. The result should be the same. The only real difference is that transformations of the MODELVIEW matrix allow to transform single simples/objects, whereas the PROJECTION matrix always affects all simples/objects. That is only logical, because when you walk around the scene all objects should be transformed accordingly to yield a view from a given angle.

Actually using the PROJECTION matrix causes other issues. Keep it in MODELVIEW.

Quote:

Original post by GOD anubis It does not matter if you transform/rotate the MODELVIEW or the PROJECTION matrix. The result should be the same. The only real difference is that transformations of the MODELVIEW matrix allow to transform single simples/objects, whereas the PROJECTION matrix always affects all simples/objects. That is only logical, because when you walk around the scene all objects should be transformed accordingly to yield a view from a given angle.

Oh wow, I never thought of doing that. Cool! [smile]