JS1k 2017 demo — "Magical L-system" by Sergey Chernykh

L-systems. See details. Copy this: {"step": 6, "orig": {"x": 0.1, "y": 0.1}, "dir": 20, "start": "F+", "angle": 90, "rules":["F=F+F-F-F+F"], "n":5}