I had kind of the inverse idea some time (years) back -- generating polygonal contour maps, and heightmaps out of them. See the demo here: http://akx.github.io/

I had kind of the inverse idea some time (years) back -- generating polygonal contour maps, and heightmaps out of them. See the demo here: http://akx.github.io/islands/ http://akx.github.io/islands/