Make the classic urban-analysis diagram. Import a site plan as a faint guide, then paint the built mass with brush, rectangle and polygon tools. Read it as a figure-ground (black mass on white) or flip to a Nolli poché where public space reads as the figure — the quickest way to study a city's mass and void.
Runs entirely in your browser — nothing is uploaded. The reference image is only a tracing guide and is never included in the export; download the finished diagram as vector SVG or PNG.