Hello, for creating irregular ceilings or background walls, there are two methods:

Method 1: Design the shape in CAD and import it into the ceiling or wall.

1. Note: The CAD file must meet two conditions: Condition 1, it must only contain polylines, i.e., lines drawn with the PL command; Condition 2, it must be in the 07 DXF format.

2. Get into the ceiling custom, double left click the ceiling to get into the 2D design canvas; Go to the top menu-import to import the CAD