Simon created an engine that uses trigonometrical (polar coordinates) formulas to produce beautiful roses. He reproduced the code originally created by Daniel Shiffman from memory and searched for the formulas on Wikipedia.
You can play with this project here (click on the play button to run): https://alpha.editor.p5js.org/simontiger/sketches/HkU9i2h1b
Geeks out of the box 