Repeating pattern creator

Show and tell
1

I always had this idea in mind and finally made it easily with Observable, and I like Observable mostly for these reasons:

  1. Everything updates in real time.
  2. You can create and edit notebooks on your phone.
  3. Many useful things are already built in (inputs, imports, …).
2

This is very cool! Sort of like a cellular automaton that continues fractally or recursively instead of evolving “down” or “forward in time”. Though, by that analogy, I guess you could do a version where the value of one pixel depends on the value of its neighboring recursive parents, if that makes sense, lol…

(And I love and agree with that description of Observable!)