Andy Ward

What you could do is validate & patch the models all in code - before you generate the geometry (with `Xbim3DModelContext.CreateContext()`). If you look at the code in the Geometry...

Sounds like Xbim.gltf is using an older Geometry engine (To be fair it's the latest master version in nuget). It would be worthwhile explicitly referencing our latest 5.1 geometry engine...

Equally we can share models under NDA if that helps. Email me if interested

Add this file to your solution root: https://github.com/xBimTeam/XbimGeometry/blob/master/nuget.config (You may have to restart visual studio after). Then when doing a nuget install you'll have the choice of our Myget repos...

Yes, coming soon. See the [netcore branch](https://github.com/xBimTeam/XbimGeometry/tree/feature/netcore)

Not initially in GE v6. The problem is that we're using [C++/CLI](https://learn.microsoft.com/en-us/cpp/dotnet/native-and-dotnet-interoperability?view=msvc-170) to wrap/interface with OpenCascade native C++ library - C++/CLI creates efficient .NET shims between native and managed code....

A quick bit of investigation. _IIfcCartesianPointList3D.TagList_ was not in IFC4.0 [ADD2_TC1](https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/) but was added in [IFC4.1](https://standards.buildingsmart.org/IFC/RELEASE/IFC4_1/FINAL/HTML/) RC3, which was integrated in xbim [April 2018](https://github.com/xBimTeam/XbimEssentials/commit/20e734f5a07fd6599b083fb725eb7c1aaf407b4a). It was also in IFC4.2 and...

Can't really advise without seeing an example. Can you supply some example code and this test model?

Sorry, this is too hard to diagnose from the above. It needs a solution someone can debug. I'd create a minimal working project demonstrating the issue. I.e. in this case...

Hi @ar98nau I took a quick look I think you need to distill this down to a much simpler example to get help. i.e you should be able to demo...