Method conductivity

src/model/Shade.cpp:148–152

    }

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

    double Shade_Impl::shadetoGlassDistance() const {
      boost::optional<double> value = getDouble(OS_WindowMaterial_ShadeFields::ShadetoGlassDistance, true);