Exterior face of wall opening

[Anonymous]

Hi! I know how to get planar faces of opening, but how determine planar faces which located on exterior face of wall? 

[yimin.chenTW · Accepted solution]

Hi @Anonymous,

You can use Wall.Orientation to get the external face normal vector which will help you get the face you want.

Please refer this for more information.

[FrankHolidaytoiling]

What if the wall is drawn backwards so the exterior is not facing outside? Or at least consistent as some other wall modelling standards might exist?