shadowcasting

Noun

 * 1)  The generation of shadows from a three-dimensional model.
 * 2)  A technique in which an incident ray at a small angle to the horizontal casts a shadow, thus making an object easier to see.
 * 3) The live amateur performance of a film by a group of people at the same time as watching the film.
 * 1) The live amateur performance of a film by a group of people at the same time as watching the film.