>> If you think you can do adaptive RK4 numerical integration of a few 
>> thousand particles at realtime speeds, be my freakin' guest! ;-)
> 
> I wonder how fast it would be in C++ :-)

Go ahead, knock yourself out. ;-)

> Are the three attractors just applying a 1/r^2 force on each particle?

Nope. Currently just 1/r for the "magnets", plus an r force for "gravity".

> What resolution are you running this at?  "a few thousand" sounds like 
> 64x64 or something.

It's 1,728 x 972 pixels. (And one particle per pixel, obviously.)

I *said* YouTube doesn't do it justice. ;-)

> When I get time I will give it a shot, but it might not be a while I'm 
> preparing today and tomorrow for two weeks of business travel.

Yeah, sure, whatever. It's pretty fun stuff to play with though...

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