Hello,
Im try do implement a Tracball in opengl.I get the Quaternion an making a 4x4 Matrix than i do:
gluLookAt(…)
glMultMatrixf( my 4x4 Matrix)
to Rotate the Camera around the Origin. This works fine.
So now my Problem how i get the Postion of the Camera and the up-Vektor to work with it?