Speckle Viewer Not Showing IFC Slab

zicklag · 13 May 2024 18:47

I noticed that the speckle viewer was not displaying the IfcSlab objects in my scene. I’m able to reproduce with a slab with an edited profile in a minimal IFC file.

gist.github.com

https://gist.github.com/zicklag/69bdc0f7cf7291da969878865d0f9c35

slab.ifc

ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('ViewDefinition[DesignTransferView]'),'2;1');
FILE_NAME('slab2.ifc','2024-05-13T13:18:48-05:00',(),(),'IfcOpenShell v0.7.0-f7c03db75','BlenderBIM 0.0.240502-86cc2bf','Nobody');
FILE_SCHEMA(('IFC4'));
ENDSEC;
DATA;
#1=IFCPROJECT('1zX2CHqtT84gA_zWotz$t9',$,'My Project',$,$,$,$,(#14,#26),#9);
#2=IFCSIUNIT(*,.LENGTHUNIT.,$,.METRE.);
#3=IFCSIUNIT(*,.AREAUNIT.,$,.SQUARE_METRE.);

This file has been truncated. show original

In 3dviewer.net it displays properly:

jonathon · 14 May 2024 09:07

Hey @zicklag could you share the URL with the project you uploaded the IFC to?

alex · 14 May 2024 12:05

Hi @zicklag

I’ve taken the .ifc file you shared and uploaded it to speckle: Viewer - IFC Slab - Speckle

I had a look and it seems the geometry for the slab is invalid. This makes me believe it is a parsing/converting issue. We’ll have a closer look and hopefully get to the bottom of it

Cheers

Jedd · 4 April 2025 10:52

Hi @zicklag, thanks for your patience on this issue.

In case you didn’t see our announcement, The next-gen IFC parser has been deployed on app.speckle.systems.

it has fixed all the issues with the slabs.