Autodesk
Fittings system override material not exported
revit-Ifc info
Version : Exporter 19.2.0.0 - Alternate UI 19.2.0.0 Revit version : 2019.2
Issue description
When you export pipes or duct to IFC. SystemType material override is exported only for segments not for fittings.
Revit 3D view Shaded mode
Revit System Type settings exemple
Resulting IFC
IFC 2x3 Coordination View 2.0
IFC 4 Reference View
IFC 4 Design Transfer View
Expected Behaviour
IFC 2x3 Coordination View 2.0 : Having fittings exported with SystemType material override as well IFC 4 Reference View : Having System material override exported IFC 4 Design Transfer View : Having fittings exported with SystemType material override as well and pipe fitting not dissapearing
Remark : An option to deactivate system override would be great (eg. for rendering purposes) but I don't know if has to be an option in Revit or revit-ifc.
The model is attached.
@MJansen22 No. You currently need to patch your ifc file after export using ifcopenshell / blenderbim add-on for example.
@MJansen22 No. You currently need to patch your ifc file after export using ifcopenshell / blenderbim add-on for example.
Did you manage to patch it, i read the recepies on the openshell website and there is nothing conecring colors and ifc fitting. What recepie did you use to patch it?
Did you manage to patch it, i read the recepies on the openshell website and there is nothing conecring colors and ifc fitting. What recepie did you use to patch it?
There is currently no recipe for this in official repository. It is possible to create one but no one yet (including myself) seems to be motivated enough to make it.
There is a shared parameter in the ifc exporter called IfcSingleMaterialOverride ( https://github.com/Autodesk/revit-ifc/blob/master/Source/RevitIFCTools/IFC%20Shared%20Parameters-RevitIFCBuiltIn_ALL_grouped.txt)
You can assign this parameter to the fittings, then write in the name of the material for which you wish the color to be added.
This implies that you already have the materials that correspond to the system colors. This is a text parameter and you need to make sure that the name is the same between the value and the Material name in you project. So far its showing good results...
The issue is reproducible for IFC 4 Design Transfer View in Revit versions 2022–2026.
Testing environment:
- Autodesk Revit 2022-2026
For IFC 2x3 Coordination View 2.0 and IFC 4 Reference View, fittings are exported with the correct SystemType material override as expected. However, for IFC 4 Design Transfer View, fittings are exported with incorrect material overrides, and pipe fittings are not displayed as intended.
This issue is also reported in Jira as "REVIT-223253" and is currently in the "Open" status.
Related issues have been opened after:
- https://github.com/Autodesk/revit-ifc/issues/577
- https://github.com/Autodesk/revit-ifc/issues/373