Missing styles and walls with cutting opening.

[thuytran1676]

Run SimpleViewerExampleQt.exe 1.8, load ifc file 190516-Hudson St PG-V_Test1.ifc (attached 190516-Hudson St PG-V_Test1.zip) Actual result: missing almost styling and walls with cutting opening. (See attached file IFC++1_8Viewer.png)

Expected result: model should be displayed correctly like BimVision Viewer (See attached file BimVisionViewer.png)

Tried to double check using SimpleViewerExampleQt.exe 1.1, better than in 1.8 but still missing cutting opening walls and styling. (See attached file IFC++1_1Viewer.png) 190516-Hudson St PG-V_Test1.zip

[ExternPointer]

I am using only parser from this library and have correct result, so this problem related to geometry generation code

[thuytran1676]

So that means GeometryConverter need to be adjusted? because when I tried with default GeometryConverter still have unexpected result. I mean I did not use ConverterOSG from SimpleViewerExampleQt solution.

[ExternPointer]

Yes. The code responsible for the CSG operations and triangulation requires special attention. It's easier to take only the parser and rework everything else, using the IFC documentation and GeometryConverter code as a cheat sheet. Parser is really very good in this library and fast as hell, but geometry generation not so good.

[thuytran1676]

ExternPointer, can you introduce me the approach that you used to display model correctly?

[ExternPointer]

You can contact me via the email provided in the bio

[ifcquery]

There is still room for improvement for some geometry implementations. In case it is a commercial project, I can fix and complement any geometry type. So far, all geometry issues with customers that use the library, have been solved. You can contact me for an offer for specific models/geomety types. Contact details are here: https://ifcquery.com/

[ifcquery]

This should be solved with previous update