magnetic fields

I found a plugin on http://en.wiki.mcneel.com that is allowing me to simulation magnetic fields in 2 and 3 dimensions.... still learning how to use it... here is a sample of how a negatively charged and positively charged point affects the field... here the field is represented with vector arrows (which is similar to my original mapping of the camera movement), but the program allows me to also produce other types of representations... those will come...