Now when I detatch the triangular polygons, they can be used as glass. So I come to a structure for a fašade.
The only problem is that everytime I change something at my mesh, I have to redo all those steps (and that means selecting +2400 faces by hand.)
I was wondering if someone could help me writing a script that helps me selecting all triangular polygons in my mesh.
Screenshot to make it more clear:
Some triangular polygons have been selected here (9 of 2400 :) )