the problem is with scale and placement ... and the placment is still alive if exported to brep ... but I am terrible bad in placement ... I found a workaround ... https://github.com/FreeCAD/FreeCAD/blob/2c8e67ad6b206ca9493ee8b6767d04d0f241b9b8/src/Mod/Arch/exportIFC.py#L2162-L2163 replace these lin...

For me the placement is wrong even if I create some spatial container objects or if I make a wall or structure out of the cysinder. As soon as the serializer has been used to generate the geometry for the IFC and if the FreeCAD placement is not 0,0,0 the placement in the ifc is wrong.

bernd

Gibt es im wiki einen ort für diese informationen? Macht sinn das dort zu hsben ... Wie wäre es mit Mesh ? Das wäre evtl unpassend. Die Tesslation ist zwar eine Vernetzung, aber kein FreeCAD Vernetzungsobjekt sondern eine Eigenschaft einer Shape. Das ganze wird schon vorgegeben durch OpenCascade. D...

Wow sehr gute erläuterungen.

Gibt es im wiki einen ort für diese informationen? Macht sinn das dort zu hsben ...

Was funktioniert problemlos ?

- ellipsoid mit den angegebenen parameter erstellen
- speichern
- laden
- oberfläche ist da

oder

- meine datei downloaden
- laden
- oberfläche ist da

see screen from ifc ... ifc is in meter ... it seams wrong exported ...

reimport of the cylinder ... deactivate all objects, just activate the cylinder ... fit view should just show the cylinder ... hover mouse over bottom vertex and check status line ... see screen ... -4995000 mm = -4995 m

example ... cylinder on placement y = 5000 ... hover mouse over bottom vertex and check status line ... see screen ... 5000 mm

Hmm this is strange... You are sure that's what's happening? Are you able to reproduce the problem. Just create a cylinder and change the placement in one direction with property editor (just use not that much it will be multiplied by ca. 1000), export with serializer, import with native ifc ... ch...

somehow the placement is wrongly scaled from mm in FreeCAD to m in IfcOpenShell during export. Hmm this is strange... You are sure that's what's happening? No not at all ... just the wrong coordinates in ifc and the placement in FC is what I know for sure ... Because of the 5000 mm in FC and -4995 ...