for details see here en.wikipedia.org/wiki/Cassini_oval and was inspired to have a go when saw this vimeo.com/1346421 think this guys is much cleaner gradient math than my ICE tree. the scene can be downloaded from here. docs.google.com/open?id=0B0WD7fSUkxAMOTF5Skd5Yl9XOUE really simple just all the distances between particles and the Q nulls 1 - 4 multiplied together.. thats it.

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…