Would have loved a post on working out the geometry of the projection, especially if it accounted for transitions of ceiling to wall. That would be fun. The su

Would have loved a post on working out the geometry of the projection, especially if it accounted for transitions of ceiling to wall. That would be fun. The surface through which one is projecting is a flat rectangle. Had it been a hemispherical dome one wouldn't have had to do anything special for the transitions.