04-19-2001, 07:30 AM
I created a room (actually a box) where the viewer was placed within and could rotate the view. Everything seemed to work fine, but after rotating past a certain point, the floor and ceiling appeared to become separated. THey were not rotating together anymore. How could they seem to be rotating together for a while and then suddenly, at a seemingly arbitrary point, start rotating at different rates (or possibly the floor stopped rotating completely.)? I was using the lookat function and I always loaded the identity matrix at the beginning of my dispaly routine.