This are 4 circles circling around each other, it's a bit like the fourier series, it's a bit hard to explain, but here is a good video about it: https://www.youtube.com/watch?v=r6sGWTCMz2k With the radius variables you can change the radius of the circles. With the speed variables, you can change the speed of the circle relative to the circle he is orbiting around. With the pen variables, you can decide which orbits's path will be drawn. Turbo mode can be handy if you want to see your creation right away. But if you want to see how it's made, then you can better not put on turbo modus.
Huge thanks to @colinmacc and @hugmyster for helping out debugging. My first code to draw circles with worked, but when I made another circle orbiting around it'd do strange things on the positive side. Make sure to put your creations in the comments. For example: Radius: 4, 1, 20, 53 Speed: 1, 10, 10 Pen: 0, 0, 0 Explanation: radius 1 = 4, radius 2 = 1, etc. same for the speed and the pen. R:80, 40, 20, 10 S: 1, 2, 8 P: 0, 0, 0, 1 R: 80, 40, 20, 5 S: 2, 4, 8 P: 0, 0, 0, 1 R: 10, 10, 60, 80 S: 1, 2, 4 P: 0, 0, 0, 1 (looks like a penguin) 10, 10, 39, 60 1,2,3 0,0,0,1 (Some cool patterns) http://www.jezzamon.com/fourier/ Here you can transform your drawing in a fourier series, really cool site! I can't wait to see your creations.