It didn’t dawn on me until today that linking to really really old source code is in bad form. The early studies for magnetosphere were done on a version of Processing from over a year ago, when it was still just barely an alpha release. Things have changed quite a bit with the API as well as with my skill set so I will start updating some of those old examples so people who choose to play with the code wont have to deal with a ton of errors right off the bat.

So here is the rework of the 2D magnetism piece that started this whole thing. Just click and drag. It was made with Processing 0124. Have at it.