Why can I rotate a slab only via the x-axis and not also via the y-axis?
Because in IFC things you'd typically use slanted slabs for (i.e. ramps) have an axis convention that it slopes along the +X local axis.
That said, it doesn't mean you're not allowed to slope along the Y axis for other purposes. Would you like to help build this feature?
@Moult said:
That said, it doesn't mean you're not allowed to slope along the Y axis for other purposes. Would you like to help build this feature?
I would like to help and collaborate, but I have no idea about programming, I am a civil engineer and therefore a user. I could only help with the documentation.
Sounds good :) In that case, can you help submit a bugreport to https://github.com/ifcopenshell/ifcopenshell so we don't forget about this?