Keep in mind that a floor is nothing more than a schematic representation of your office floor. So, forget about special angles and whether or not a glass wall must be considered a wall (it does, by the way).
The only things that you need to be concerned about are scale and rooms.
The scale enables you to always view your floor in one screen, no matter how large that floor is. And being able to represent your floor on one screen, allows you to present a live pane of that floor on an entrance screen. Make sure you start with the right scale of your floor before you start adding workplaces, access points and snapshots.
The rooms define access point obstacles, and it doesn't matter whether the room's walls are made of card board, glass, plastic or concrete. Signal degradation of your access points is determined by the snapshots you take, so basically, it's irrelevant whether room walls are made of glass or concrete. What is relevant -- letting your map know that there is an obstable. So, if there is some sort of room, make sure you add it to the floor, and then take a snapshot inside that room to allow for signal degradation calculations.