Spirograph with adjustable parameters

This is my digital rendition of the classic Spirograph toy. Feel free to adjust the parameters, and then press "draw". Before making a new drawing, press "reset".

There are three adjustable parameters: "Ratio of Circles" controls the ratio between the larger circle and the smaller circle. "Pen Position" controls how far the pen is from the center of the smallest circle. "Number of Circles" is self-explanatory.