3D Room Geometry

Revit
1

I was having problems with a Room this morning.
I found a post Marcello made & figured that might be a nice way to visualize my Room in 3D (c’mon Factory! Why not?)


Anyway, it’s a fairly large project and I only want one Room, so I changed the All Elements of Category node to a Select Model Elements.
If I wire Marcello’s original “All Elements” node (green Group) into the Element.Geometry node, it works correctly.
However, if I use a Select Elements node (blue Group), all of the created Geometry comes in 107-'6" too high.
As far as I can tell, I get the same Element IDs pumped into the Element.Geometry node.
I’m puzzled why they act differently.
RoomBoxes.png1018×686 43.1 KB

3D Rooms.dyn (13.0 KB)

2

Upon further discovery, it looks like its not the difference between the input nodes.
The geometry comes in at different heights depending on which View is active when I run the graph.
I just happened to be in the 3D View when I ran with All Elements.
In order to select which Rooms to copy, of course, I have to be in a Floor Plan View.
I get the same results (too high) if I run the graph while in a Floor Plan View.

So my question changes to: What does ImportInstance use to determine it’s Base Level? Current Work Plane, perhaps?

3

The settings are propably the same as the default in the dialog box when you go to Insert > Import Cad.

It doesnt look like they add any settings, excpet the units: (the geometry is exportet to a temporary .sat file and then importet to Revit)

If you need more control, you could investigate the Document.Import method in the API:
http://www.revitapidocs.com/2017/05c3dbe2-fe7e-c293-761d-b11f356a011b.htm