Roulette Generator

Another little geometric toy to generate some cool shapes. It uses the same principles as that old favourite, Spirograph.

Options

A Hypotrochoid is a little cog running inside a bigger cog. An Epitrochoid is a little cog running outside a bigger cog.

Sharpness is pretty straightforward. You'll probably want to keep it above 60, but you can get cool effects with very low values.

Inner Radius is the radius of the big cog.

Outer Radius is the radius of the little cog.

Distance is the distance from the center of the little cog to the 'pen'. Unlike real Spirograph, it can be more than the radius of the little cog.

I couldn't have done this without:

Mozilla.org Canvas Tutorials
Wikipedia Hypotrochoid
Wikipedia Epitrochoid