@Moult said:
IFC supports 2D.
By 2D, do you mean vertex, edges, and faces?
I did some testing and did not find a method to export pre-cast objects like: lines, polylines, points, hatches, and other equivalent to vertices, edges and faces.
I tried with AutoCAD and FreeCAD, no luck. not sure if Blender have those objects.
Could you please share us a simple file to test where you exported the traditional 2D object and explain how to do it?
@jtm2020hyo Here is an example of a single 2D square annotation exported in IFC. Yes, it has support for lines, curves, polylines, circles, points, hatches, etc. You can import it in the BlenderBIM Add-on and see it as a 2D shape.
I did the same with your file. Your polyline closed was converted to Wire Object or Edges-Merged Objects in FreeCAD.
as I mentioned what happened here was the 2D lines turned into 3D objects, in this case, Edge objects. This problem could break any workflow.
its there any suggestions?
The element itself has a position in 3D space, but the representation (i.e. geometry) is 2D, so the behaviour you see is expected. What workflow are you referring to?
In the BlenderBIM Add-on, the representation retains its 2D status throughout editing. I'm not sure about FreeCAD. Maybe @yorik will know?
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