For my child who's learning the multiplication tables. The code is a bit messy but I did it fast, it's late and I'm tired. You can easily make it fullscreen by changing the sizeX and sizeY variables. I will test it on him tomorow, I hope he will find it fun! B^âˆ«
When I was a kid, I was fascinated by the Spirographe. Also by the drawings made with it, but more by the cogwheels themselves. Ok, here you can play with the keys a, z, q, s, w, x, o, p, l, m, h and the space bar. Hey, I've just notice than the java2D renderer in my browser is not as good as in Processing or in stand alone.