Hi I'm a new member, but long time follower and first time posting.
I'm working with 3dsmax 2009 and vray 1.5 and I'm trying to create an invisible object that casts shadows. The main point of this is to "cut" the vraylight near the object to cast a sharp shadow on one side while diffusing everywhere else.
In photography terms this would be called a "flag," and I would like this simple functionality with the added benefit of being invisible (or at least not show up on final renders).
Any help would be greatly appreciated.