This is intended in some sort of terrain manipulation for the ongoing project – too bad things started shaping like some sort of electrical field/strange attractor (it has nothing to do with the above, the similarity is purely formal).
Download the .ghx file here. (right click, save target as)
Also there’s a bug in the code – something’s not working right. Initial attractors seem to have much more power than the latter. Maybe someone that takes a fresh look over the code could point out my mistakes.
— LATER EDIT —
There seems to be also a little glitch in provding the code for curve_gen scripting node, so here it is (copy and paste it):