Thanks for the heads up. I can adapt this to my needs as well. I apparently need to skim through all of the examples! I'm trying to mask the exteriors of a vector of ofPolyline shapes .. so that I can make cool fills and stuff on the insides, with iterations of 2d primitives and what-not, bounded by ofPaths or else ofPolylines --I haven't decided how this is going down yet. when I found your post, I was definitely working with fbo's to store stroke and fill pixels separately, and trying to figure out how to make one part of my drawing transparent, so .. anyways, all is going well with everyone's help. Thank yous
this is such a great community!