pitched roof version 1 only works for square buildings
terra vista style roof v0.1 still have to duplicate vertices and fix texture and normals
texture coords fixed, + normals
fix for buildings defined by linestrip
offset vector fix
refix offset fix
removed cast
only overlapping edges affect offset distance
retesselate pitched roof after shrinking
clean up new'ed temp arrays
Merge branch 'feature/pitched_roofs' into develop
Merge branch 'release/pitched_roofs_release'