If you need to create an opening on your ceiling or on the floor, first open the 3D Navigation window and click on the Opening/Niche button in the Ribbon:
In the pop-up window that appears, you can insert the dimensions of the desired opening (you can also choose to draw it interactively). If you activate the field "Create hole on wall", the depth of the opening will be automatically set to the depth of the floor/ceiling, creating an opening.
If your changes are not immediately visible in your project, update the 3D view by clicking on the Update View command found in the Navigation section of the Ribbon, in the group 3D View.
Simulating a room on the floor above or below
When an opening is created on a flat ceiling, DomuS3D allows users to choose whether to simulate the presence of a room above. It does not create an actual room and although it has some limits, in many cases it can suffice to visually represent the presence of a room on the floor above.
From the virtual navigation window, right click on the ceiling to open the context menu where you can choose to insert an opening or niche.
Once you’ve selected the command, a pop-up window will appear that will allow you to configure the opening, inserting its dimensions, thickness, choosing whether to create a full opening in the ceiling, and whether you want to simulate a room on the floor above.
The room created above the opening lets you easily insert a staircase more realistically, without having to create additional objects.
Similarly, you can perform the same operation on the floor, simulating the presence of a room on the floor below. Right click on the floor from within the navigation window and select the insert opening/niche command.
This article is valid for the 2020 version and later.