From this - https://i.imgur.com/hQuCcR3.png
To this - https://i.imgur.com/qZ2Lyfo.png
It's a bit hacky since we still use really small offsets to keep "The outer curve shall enclose all inner curves." rule for IfcArbitraryProfileDefWithVoids valid.
Added support for sliding doors in IFC Door Modifier.
The main differences are 2d representation (https://i.imgur.com/VyEH569.png) and the door panel being placed before the lining, not after
Also:
- refactored window modifier code - part of it is now reused building a door and can be used by other module in the future
- fixed bug with window lining intersecting frame when lining_depth < panel_depth
- simplified the way lining is built in ifc - previously it was using 4-6 extrusions, now it's 1-2 which is also better for 2D drawings
Andrej730
