This technique of using light to create a layout is actually nothing new.  There is a reference to the ‘lantern method’ in a 1929 book called Poster Design by W.G. Raffe.  The method, offered up in contrast to the pounce method, is described as:

“The lantern method is done at night.  A powerful electric lantern reflects the design from a coloured drawing, direct on to the wall.  The painters trace the lines as they fall, and next day fill in the colouring as noted.”

For some inspiring light projections of a different sort check here and here.

[View film on youtube here]