Method skylightToProjectedFloorRatio

src/model/Surface.cpp:1535–1562

    }

    double Surface_Impl::skylightToProjectedFloorRatio() const {
      double result = 0.0;

      if (!istringEqual(this->surfaceType(), "RoofCeiling")) {
        return result;
      }

      Point3dVector vertices = this->vertices();
      Plane horizontal(Point3d(0, 0, 0), Vector3d(0, 0, 1));
      std::vector<Point3d> projectedVertics = horizontal.project(vertices);

      boost::optional<double> grossArea = getArea(projectedVertics);

      if (!grossArea || grossArea.get() == 0) {
        return result;
      }

      double skylightArea = 0.0;
      for (const SubSurface& subSurface : this->subSurfaces()) {
        if (istringEqual(subSurface.subSurfaceType(), "Skylight")) {
          skylightArea += subSurface.multiplier() * subSurface.netArea();
        }
      }

      result = skylightArea / grossArea.get();

      return result;
    }

    boost::optional<SubSurface> Surface_Impl::setWindowToWallRatio(double wwr) {
      return setWindowToWallRatio(wwr, 0.762, true);