Method setLightingPower

src/model/Space.cpp:1347–1359

    }

    bool Space_Impl::setLightingPower(double lightingPower) {
      OptionalLights templateLights;
      LightsVector myLights = lights();
      if (myLights.empty()) {
        if (OptionalSpaceType st = spaceType()) {
          myLights = st->lights();
        }
      }
      if (!myLights.empty()) {
        templateLights = myLights[0];
      }
      return setLightingPower(lightingPower, templateLights);
    }

    bool Space_Impl::setLightingPower(double lightingPower, const boost::optional<Lights>& templateLights) {
      if (lightingPower < 0.0) {