I am trying to create a crowd at a large outdoor event. I have painted a black/white map of where I want more dense crowd vs. less dense. Unfortunately I can't seem to find anywhere to put the map in to get the effect I want. I tried it as a distribution map but then it is solid until it hits the threshold and then there is nothing beyond that point.
What I would like to be able to do is use my map to drive the threshold and still retain the stock distribution maps. Unfortunately I don't think that is possible at this time. Any workarounds?