I loved tangrams as a child. This looks very nice. Great entry.

Playing alongside the generated patterns was more enjoyable than I remember Tangram to be :-o

I also liked your article and explanations about the whole process a lot. The line about simple systems creating complex outputs really resonated with me, and I think it also applies to your project in the sense that I was positively astonished at how small and clean the codebase was given the quality of the output. Great job!