An animation toy for my Tumblr, which is mostly animated gifs made with Processing.
This particular sketch involves the creation of a particle system. Each particle system calculates a repelling force from one or more registered repellants. For the sake of making something that would loop nicely, I created a repellant that moves in a fixed circle, but a mouse repellant is also implemented (i.e., particles will avoid your mouse). I got a bit bored of doing it towards the end so it's not perfectly cleaned up but it illustrates some basics about how to work with particle systems and how to calculate forces between particles. This is also the first time I've spent some time messing with the controlp5 library, which I'll probably use a little bit in all of my Processing projects moving forward.
Anyway, the output of running the code can be exported to a series of images and compressed into an animated gif that looks like this:
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