An enhanced Penrose tiling created as part of "Visualizing point sets, fractals, and quasicrystals using raster techniques", by Ned Allis, Jeff Dumont and Cliff Reiter. Notice the rhomb tiling in black, the Voronoi tiling in white and hues showing distance to the nearest vertex. See the script ras_tile.ijs for the function to create such tilings from point sets, and also see the explanitory laboratory ras_tile.ijt and get the required script raster4.ijs as well.