US states as generative tile mosaics, pick the shape family for land/water/parks (us-mosaic-map.netlify.app)

I saw Ellen Harvey's Green Map mosaic of San Francisco and wanted to generate something like that algorithmically. The visually striking part is that each color of tile comes from a different shape distribution. This is about reproducing those shape families (and some new ones) over additional geography, and letting the user select shape families for different land forms.