Method airflowPermeability

src/model/Shade.cpp:204–208

    }

    double Shade_Impl::airflowPermeability() const {
      boost::optional<double> value = getDouble(OS_WindowMaterial_ShadeFields::AirflowPermeability, true);
      OS_ASSERT(value);
      return value.get();
    }

    bool Shade_Impl::isAirflowPermeabilityDefaulted() const {
      return isEmpty(OS_WindowMaterial_ShadeFields::AirflowPermeability);