Is there a way to set a mesh object so it casts a shadow of itself, but is also invisible? I know there is a check box to turn an objects shadow on and off, is there something like that for the mesh, that does not remove the shadow cast?
This type of shadow trick can be done in Blender with the material "OnlyCast" setting, see attached pic, I want to do this same trick in Terragen, any suggestions?