Can we make a wall property using "Expressions" that automatically recognizes its own orientation to project origin? My thoughts are to identify wall’s start/end X and Y coordinates, apply simple “cos” and “sin” for recognizing wall's vector directio...

I'd like to use schedules to sum-up some areas of multiple items (walls, windows, zones, doesn’t matter really), but then I'd like to make the resulting sum of those areas into a custom Property that I could then use to interact with other properties...