Previously if you change `HasUnderlay` in pset it caused errors because camera properties `has_underlay` wasn't updated.
Still some work need to be done for updating keep camera properties in sync with pset - probably we can should call something like `tool.Drawing.import_drawing()` on EPset_Drawing edit
It works exactly the same as schedules - you add some .svg file, path to it stored in ifc and you can attach it to the sheet.
UI - https://i.imgur.com/tGbCGBb.png
Still need to add some tests for references
Short demonstration - https://github.com/IfcOpenShell/IfcOpenShell/assets/9417531/90c9b458-0bae-40a2-9eee-d748e57c24a3
Curently it doesn't have any special representation in viewport and it doesn't have any customisable parameters.
You might get come across error "Revision cloud edges must form just 1 polygon" - it means your edges either don't form any polygon or form 2 or more, both cases are not supported.
Before that commit if you created those types of annotations and then reopened .ifc file (without .blend) then you would lose their z coordinate and therefore would lose their value (because they were created previously as 2d annotations).
Now those annotations created as 3d to avoid that problem. I've also added temporary fallback that will turn your existing annotations to 3d next time you edit them.
Bug appeared after 046940f but it was there before - it was just kind of compensated by the other bug.
Because of that bug blender text size value was reupdated before saving it to pset therefore pset never received a new value.
Also added some refactor, planned to write some test to get this error covered.
Now shading styles are stored in ifc. It's actually stored in json file (by default it's in projects "assets/shading_styles.json") and the path to it saved in `EPset_Drawing.ShadingStyles`.
Current shading styles is stored in `EPset_Drawing.CurrentShadingStyle`.
This change could potentially cause problems but I've added some temporary fallback to make sure `EPset_Drawing.ShadingStyles` will be set to some default path and default shading styles will be copied to the project's folder.
Checkboxes affect the drawings that will be used when you shift click "Create drawing", "Open Drawing", "Remove Drawing". Previously those opeartors were always applying the action to all drawings.
Also added option to remove selected drawings with shift+click to "Remove Drawing" and added new operator "Select all drawings" to select drawings in one click (you can shift click it to delsect all drawings).
Example - https://i.imgur.com/GAGghu5.png
Including or excluding elements from the drawing using EPset_Drawing.Include/Exclude now also works for IfcAnnotation elements. Both in viewport (on "activate view") and on svg print.
Related change - annotation decorations are now hidden in viewport if their object is hidden.
Dion Moult
