Actually, this one uses 10,000 particles, and the equation:

float force = planet.mass * particle.mass / distanceSquared;

(Thanks Keith Peters!)

Particles are regenerated if they begin shooting off into space. Near the end of the animation, I decrease the center planet’s mass until it becomes negative, changing gravity into repulsion…

Tags: Animation, Code, Experiments, Object-Oriented-Programming, Physics, Processing, Video

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