Augmented Shadow, by Joon Moon, 2010. used openframeworks. It's a tabletop interface on where artificial shadows of tangible objects displayed. You can play with the shadows lying on the boundary between the real, virtual, and fantasy.
SONY's 'xperia touch' projector turns any surface into a giant touchscreen - mobile world congress 2017: using your wall as a giant touchscreen is now possible thanks to SONY’s latest creation, which has just been unveiled at MWC barcelona. the company made waves with the ‘xperia touch’—a groundbreaking projector that transforms any flat surface into a 23” high definition touchscreen.