Visualization of multi-layer composite elements

I'm having trouble getting a correct display of multi-layer composite elements in Bonsai and IFC viewers.
I'm modeling a multi-layer composite element, wall or slab; I'm adding openings with parametric window and door, and an IfcOpeningelement.
Bonsai: the display works correctly for the MODEL/Body/MODEL_VIEW/SweptSolid view.
For this representation, the wall layers are not shown in the IFC viewers (BIMcollab/BIMvision/OpenIFCviewer).


Bonsai: For the MODEL/Body/MODEL_VIEW/Tessellation (Full Representation) view,
the display of openings in the wall is incorrect; it is only correct for the parametric door.
For the same view, in BIMcollab and BIMvision viewers, the display of materials and openings is correct.
For the OpenIFCviewer viewer, the openings of the parametric door and window are displayed incorrectly.


Am I doing something wrong?
Is this an error or deficiency in Bonsai/IFC Viewers/IFC Scheme?
I've attached a test file.
Thanks!!

Comments

  • MasMas
    edited December 2025

    think there are some softwaresolutions beside bonsaibim displaying layers (e.g. ArchiCad, Revit,...) BIM Vision is the Viewer I´m using for testing, there you can display voids, -as I know-layerdisplay is not supported, but you can inspect it by data...
    The layers -in my understanding- are not effected by the representation (but this is a own topic - there was a community-threat about that) (except 2d plan-view)

  • @Mas said:
    think there are some softwaresolutions beside bonsaibim displaying layers (e.g. ArchiCad, Revit,...) BIM Vision is the Viewer I´m using for testing, there you can display voids, -as I know-layerdisplay is not supported, but you can inspect it by data...
    The layers -in my understanding- are not effected by the representation (but this is a own topic - there was a community-threat about that) (except 2d plan-view)

    But BIMvision does support layer visualization (They cannot be selected, but they can be viewed); if you open the attached file in BIMvision, you can see the layers and openings correctly.
    The problem is that in Bonsai, I can't find the MODEL/Body/MODEL_VIEW representation necessary for the correct visualization of layers and apertures that is compatible with IFC viewers.
    The strange thing is that, in Bonsai (MODEL/Body/MODEL_VIEW/Tessellation) , the opening of the door looks good, and the opening of the window looks bad.
    Other models created with Revit/Archicad also display correctly with layers and openings in BIMvision/BIMcollab........

  • MasMas
    edited December 2025

    Thats not a solid... (its tesselated), if you take a wall unclassify it, split it by material and join and reclassify it again)... you dont have the possibilites for solids...
    Seems there is an issue with the Ifc Styles and needs a workaround, if you want to work it out this way, think the other way would be (in solid or tesselated) an assembly

    FranSeoane
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