How to use vvvv to generate unique digital projection images/video on blocks or boxes surfaces? How to use a single projector to produce multiple images/videos within one projections with different surfaces using vvvv?
“Mapping” is the term you seek. I suggest that you do some research, play with textures on some transformed (to fit your objects) quads. then, if you have a specific question, ask again :-)
Homography is a node you want to check out too, and for the masking out, use a photoshopped mask or something.
Thanks to bilderbuchi and West to guide this newbee here. I will explore that further.