In this case there is only one left rectangle. There is no right rectangle (which should be the same as having a transparent right rectangle if you need it for some reason), so the hatching is not obscured. There is no explicit corridor underneath all this, so I don't need to care about showing/not showing it. The whole cell is a corridor and a door at the same time.
Thanks bro. In my code I draw one door and rotate it depending on its properties in the json:
door.dir.x is horizontal (left or right facing)
door.dir.y is vertical (up or down facing)
So if you were to turn doors off in your code, is this sort of what you'd expect a map to look like?
To achieve something that even closely resembles what you you have made I need to draw doors over the walls that mask what . It's a pain but I also love learning this stuff.
Anywho. The more I tinker with this, the more admirable I find your attention to detail and the skill needed to pull it all off elegantly. Even the Dyson hatching and the seed generation method. Hot dang it's cool. I'm guessing you're an old school Flash Dev :) 