I think the fix could be improved: https://github.com/FreeCAD/FreeCAD/commit/2504247#commitcomment-36696448. Shall I make a pull request? We are now using the right trigonometric functions, such that all combinations of positive/negative are handled: https://github.com/FreeCAD/FreeCAD/pull/2878. No...

I think the fix could be improved: https://github.com/FreeCAD/FreeCAD/comm ... t-36696448. Shall I make a pull request?

I have a question. What's the name of the property with the number of a singular entity ifc file? I've printed out a list from the file, and I'd like to save those entitions as individual files. I just don't know how to get the number of a particular part. for product in products: print(product) Ho...

I wrote and use a Groovy script to extract particular entities. It only works with regex matching, no proper parsing. Should be quite fast, but could be improved in terms of memory. It will fail if records are not separated with linebreaks (which is technically not required but mostly the case). By ...

I investigated some more. It seems that 4-byte unicode is not correctly handled by certain applications although perfectly valid according to the standard. Some Unicode encodings are variable length and then you would use the shortest length necessary, i.e. not pad with leading zeros. But ISO10303-2...

I think 0.19.18733 is the latest dev version, no?

I can confirm these errors and will created a pull request to fix 1-5: https://github.com/FreeCAD/FreeCAD/pull/2766.

I am not sure about 6. I think I have seen some discussion around IFC UTF8 encoding issues before and I know it is a bit peculiar. Maybe someone more familiar with it can have a look?

Ah, that's the reason. I was wondering how that could happen, because in IFC properties manager, you can not enter values of the wrong type, the UI restricts value entries to the right type. I was just about to search for IFC property sets with IfcIntegers (there are not that many) and test with the...

From a quick look this may be a property value with a wrong type, e.g. you entered a String or Real for a property of type Integer. Can you try to export without property sets to confirm?

Now that IFCOpenShell 0.6.0 made it into 0.19 builds, we have the whole schema available at runtime: https://github.com/IfcOpenShell/IfcOpenShell/issues/718. I would suggest to implement optional schema validation either on instantiation or on final saving the IFC. This option could be switched on f...