This is great! I was eying the vimeo last week. You are really cranking these GLSL gems out! I've been very interested in porting more of these kinds of things, but really still don't have a full grasp on the methods. These GLSL physics networks of yours are extremely useful for learning this stuff! Thanks for sharing!
Thanks for the nice words, glad you enjoyed it! It's been some time since I wanted to try gpu sims, but all the code needed for setting up and swapping textures and feeding parameters always put me off, so touch is great for that