Method northAxis

src/model/Building.cpp:270–274

    }

    double Building_Impl::northAxis() const {
      boost::optional<double> value = getDouble(OS_BuildingFields::NorthAxis, true);
      OS_ASSERT(value);
      return value.get();
    }

    bool Building_Impl::isNorthAxisDefaulted() const {
      return isEmpty(OS_BuildingFields::NorthAxis);