Simon returned to his old Attractor sketch in Processing once again, now adding some new functions:
The code original came from Daniel Shiffman’s book The Nature of Code, Chapter 5 (Physics Libraries) and from the ToxicLibs library, but Simon has customized it quite a bit.
Simon returned to his “old” code (something he wrote about a month ago) and fixed the collision detection in it. He called this “geometry free”collision detection because he doesn’t use any geometry for this project, but only attraction behaviour. The particles repel each other when the distance between them is 20 pixels.
Here the particles are attracted to the black blobs: