Cellular automaton snowflake generator in OpenSCAD

thingiverse

By default this cellular automaton uses Stephen Wolfram's rule that a filled cell remains unchanged and an unfilled one becomes filled if it has exactly one filled neighbor. You can vary the rules, including indeterminate ones. For instance, you can set chance to 0.5 for generation when there is only one neighbor, so the generation parameters are 0, 0.5, 0, 0, 0, 0, 0. These result in more snowflake-like patterns than the defaults (see the light blue image). Another interesting set of generation parameters is 0, 0.5, 0, 0.1, 0, 0, 1 (0.5 chance of generation with one neighbor; 0.1 chance with three neighbors, certainty with six neighbors). https://youtu.be/sJjrz4mL5aA **Christmas 2017 update:** Added join mode, where neighboring nodes are connected by a thick line instead of having a hex at them. **December 2018 update:** You can now set the random seed.