@dev24984 I do have same issue. floor.walls are not in same order, and there are inner walls. floor.polygonCorners is not oriented the same way (transform.eulerAngles.z and .y is 0) I attempted algoritm to calculate the distance of each wall, and between each polygonCorners , to try to match them If I find the matching wall, I get the angle to apply. I still use the floor.transform.position to position the floor correctly. -> distances are not exactly the same, so I have to do several pass to find the matching wall, with a difference increasing (0.01) -> it works as along as the walls are not identical else orientation can be 180 degres wrong and sometimes it fail entirely (round room) So unsure this is the way, unless I attempt to match inner walls as well. Else another idea could be to figure out the outer walls of the rooms, gather each translated end point, and make a surface out of it. if only apple has properly filled its transform for the floor :(