nobody generates doom maps with the inside colored because it's hard. but i did it first try thanks to the power of the 2D cross product
what the fuck is... uhhhhh im sure its fine. the map just looks like that
problem was that in doom, a vertex is a Kind Of Thing (but not a Thing, that's different), and i was using vertex identity to trace sectors, but some old map editors could produce duplicate vertices in the same position and that fucked things up. using coordinates fixed it and everything seems fine. even donut sectors or multi-part sectors should draw fine
i would show what they actually look like in a browser atm but trying to post two screenshots at once breaks cohost