I just cloned the repo, and with the current origin branch as well as with the current master (today is April 29, 2022), there is an issue with the visualization of some walls.
What I found is that geomReader.ShapeInstancesOfEntity(entity) does return one shapeInstance, but it has a RepresentationType == XbimGeometryRepresentationType.OpeningsAndAdditionsExcluded, so it does not get rendered.
I just cloned the repo, and with the current origin branch as well as with the current master (today is April 29, 2022), there is an issue with the visualization of some walls.
2 walls are missing:
Strangely, loading the same model in the downloadable install https://docs.xbim.net/downloads/xbimxplorer.html, the walls do show:
What I found is that geomReader.ShapeInstancesOfEntity(entity) does return one shapeInstance, but it has a RepresentationType == XbimGeometryRepresentationType.OpeningsAndAdditionsExcluded, so it does not get rendered.
A small ifc file attached: Testraum5-einschichtige Wand.zip
Regards, Kris