The assignment was to create an applet that combined a natural phenomenon with an unnatural one. The leaves were changing at the time, and I noticed that their sequence was similar to that of traffic lights: first green, then yellow and red. So I combined the two. The simulation runs for around 30 seconds. As it plays, clicking the mouse on the image will simulate wind blowing on the tree. This was a one week assignment for John Maeda's Numeric Photography course that took place in the Fall of 1998. (Later ported without further changes to vanilla JavaScript.) << ben fry