Well here it is. A tad rushed since i wanted to get it up here asap.. there are a few things currently not working as it should etc.. but it should be crash-free

a couple of images made with it:






and a screen of the GUI(that looks like complete retardation

)

As i was in a bit of a hurry when i posted this i neglected to mention a few things.. everything you see is calculated in realtime, and since i'm not sorting anything properly the voronoi is slow as hell if you work with alot of points.. the perlin noise isnt working as intended yet, for now its only a one pass smooth noise function..
the first few functions are simple c=f(x,y) while the 3 test ones are a little more advanced and thus resulting in cooler textures

sadly they are hardcoded since i havent had the time to code a proper expression evaluator :/ oh well, hope you have fun playing with it.. i sure had
Zip attached...