Controlling facade setbacks with azimuth

[NicolaiSteinø]

Hi,

I want to make a script for buildings with horizontal facade setbacks which I want to control according to world orientation. Basically, only North facades (say azimuth < 45˚ or > 315˚) should have setbacks, while other facades should be straight. I normally use extruded objects as building envelopes, which I then split in the y direction to get floors. I therefore thought I might check the orientation of the building envelope and do a case, to distinguish buildings with setbacks from buildings without. Now, it seems that an extruded object cannot use the geometry.angle(azimuth) function so I am kind of stuck as to how to approach the problem.

Do you have any suggestions as to how to proceed?

Regards,

Nic

[NicolaiSteinø]

Amendment: To be precise, what I want is that only buildings whose MAIN facades are facing North should have setbacks on that facade. Buildings whose main facades (not guided by street front, btw.) are NOT facing North should not have any setbacks at all.