The roof generator doesn't seem to understand that
Indeed. Is not an AI.You need a trick. Something like this.
Add a very tinny part at the room (1 cm or even less). You will have to test.
I've zoomed to be more visible.
The roof generator.
Final result.
Good luck!
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A computer program does what you tell it to do, not what you want it to do. Murphy's Law
When all else fails, read the instructions. Murphy's Law
If you don't like "AS IS", DIY. Dorin's law
