The description from the Generative Design book reads as follows: ‘The step from harmonic oscillations to Lissajous figures is very easy now. Instead of one oscillation, two are calculated, one of which defines the y-coordinates of the point to be drawn (as demonstrated) and the other its x-coordinates. The adjacent image depicts an oscillation with frequency 2, an oscillation with frequency 1, and a 90º phase shift, which together results in a Lissajous figure in the shape of a reclining 8.’ Here you can find the original program I started with.
As usual I changed the global variable names. The size of the display window and I added some letter spaces to improve the readability of the program. Made the background gray and I filled all curves because the strokes displayed were giving a bad image quality.
This animation is fine as long as you don’t cranck up the frequency rate of one or both frequency curves to lets say 7 Hz. If it higher everything will be unreadable. So I think its better to make that information static. But it is also more boring. Until here I don’t want to go any further with these examples. I could make more variations but the intention is to understand how Lissajous figures work. And that is clear to me now.