<Also a projecor light using a bitmap of the shape you want to project on the
cieling>
I had thought of that (actually, in this case, it's a floor I'm trying to
project on, not the ceiling). However, trying to match the shape to the exact
curve of where the coffer intersects the wall and hence projects to the floor
would be quite difficult. You'd have to pull the light quite far down from
where the actual coffer would be, and eliminate a lot of objects it would shine
on. It's just too difficult to plot such curves in any easy manner. I would
need a new idea to make that one work.