ShawnDriscoll opened this issue on Feb 16, 2009 · 6 posts
ShawnDriscoll posted Mon, 16 February 2009 at 9:08 PM
It's when you have a 3D model with a photographed backdrop behind it, and you need the shadow of the 3D model to be shown (say onto the street in the photograph). But you don't have a ground plane, just the model.