Freecad and Blender as team

[cad1234]

Just a small adding:
if you have installed the “Lighting sun position” Addon in Blender, you can use the time of day as slider., to go quick through the day, to see the effect of light and shadows in your building scene during the day. The sky texture should follow until nearly black during the night.
On the other hand, you can leave the time of the day, but use the month setting as slider, to see the effect during the year.
To ensure, that the sun and sky follows, this world setting (Blender 292) works fine on my PC.
For such quickly changing scenes by using sliders, would recommend EEVEE, it will show its full power as realtime render.
To render the glass facade nearly correct in EEVEE, would recommend to set EEVEE with “screen space reflection”, and the glass material inside the curtain wall as shown.