discretization/staggered/subcontrolvolumeface.hh

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#ifndef DUMUX_DISCRETIZATION_STAGGERED_SUBCONTROLVOLUMEFACE_HH
#define DUMUX_DISCRETIZATION_STAGGERED_SUBCONTROLVOLUMEFACE_HH
 
#include <utility>
#include <dune/common/fvector.hh>
#include <dune/geometry/type.hh>
 
#include <dumux/common/optional.hh>
#include <dumux/common/indextraits.hh>
#include <dumux/discretization/subcontrolvolumefacebase.hh>
 
#include <typeinfo>
 
namespace Dumux {
 
template<class GridView>
class BaseStaggeredGeometryHelper
{
    using Element = typename GridView::template Codim<0>::Entity;
    using Intersection = typename GridView::Intersection;
    static constexpr int codimIntersection =  1;
 
public:
 
    BaseStaggeredGeometryHelper(const Element& element, const GridView& gridView)
    : element_(element)
    , gridView_(gridView)
    { }
 
    template<class IntersectionMapper>
    void updateLocalFace(const IntersectionMapper& intersectionMapper, const Intersection& intersection)
    {
        intersection_ = intersection;
    }
 
   int dofIndex() const
   {
       //TODO: use proper intersection mapper!
       const auto inIdx = intersection_.indexInInside();
       return gridView_.indexSet().subIndex(intersection_.inside(), inIdx, codimIntersection);
   }
 
   int localFaceIndex() const
   {
       return intersection_.indexInInside();
   }
 
private:
   Intersection intersection_; 
   const Element element_; 
   const GridView gridView_;
};
 
 
template<class GridView>
struct StaggeredDefaultScvfGeometryTraits
{
    using Geometry = typename GridView::template Codim<1>::Geometry;
    using GridIndexType = typename IndexTraits<GridView>::GridIndex;
    using LocalIndexType = typename IndexTraits<GridView>::LocalIndex;
    using Scalar = typename GridView::ctype;
    using GlobalPosition = Dune::FieldVector<Scalar, GridView::dimensionworld>;
};
 
template<class GV,
         class T = StaggeredDefaultScvfGeometryTraits<GV> >
class StaggeredSubControlVolumeFace
: public SubControlVolumeFaceBase<StaggeredSubControlVolumeFace<GV, T>, T>
{
    using ThisType = StaggeredSubControlVolumeFace<GV, T>;
    using ParentType = SubControlVolumeFaceBase<ThisType, T>;
    using Geometry = typename T::Geometry;
    using GridIndexType = typename T::GridIndexType;
    using LocalIndexType = typename T::LocalIndexType;
 
    using Scalar = typename T::Scalar;
    static const int dim = Geometry::mydimension;
    static const int dimworld = Geometry::coorddimension;
 
public:
    using GlobalPosition = typename T::GlobalPosition;
 
    using Traits = T;
 
    // the default constructor
    StaggeredSubControlVolumeFace() = default;
 
    template <class Intersection, class GeometryHelper>
    StaggeredSubControlVolumeFace(const Intersection& is,
                                  const typename Intersection::Geometry& isGeometry,
                                  GridIndexType scvfIndex,
                                  const std::vector<GridIndexType>& scvIndices,
                                  const GeometryHelper& geometryHelper)
    : ParentType()
    , geomType_(isGeometry.type())
    , area_(isGeometry.volume())
    , center_(isGeometry.center())
    , unitOuterNormal_(is.centerUnitOuterNormal())
    , scvfIndex_(scvfIndex)
    , scvIndices_(scvIndices)
    , boundary_(is.boundary())
    {
        corners_.resize(isGeometry.corners());
        for (int i = 0; i < isGeometry.corners(); ++i)
            corners_[i] = isGeometry.corner(i);
 
        dofIdx_ = geometryHelper.dofIndex();
        localFaceIdx_ = geometryHelper.localFaceIndex();
    }
 
    const GlobalPosition& center() const
    {
        return center_;
    }
 
    const GlobalPosition& dofPosition() const
    {
        return center_;
    }
 
    const GlobalPosition& ipGlobal() const
    {
        // Return center for now
        return center_;
    }
 
    Scalar area() const
    {
        return area_;
    }
 
    bool boundary() const
    {
        return boundary_;
    }
 
    const GlobalPosition& unitOuterNormal() const
    {
        return unitOuterNormal_;
    }
 
    GridIndexType insideScvIdx() const
    {
        return scvIndices_[0];
    }
 
    // This results in undefined behaviour if boundary is true
    GridIndexType outsideScvIdx() const
    {
        return scvIndices_[1];
    }
 
    GridIndexType index() const
    {
        return scvfIndex_;
    }
 
    const GlobalPosition& corner(unsigned int localIdx) const
    {
        assert(localIdx < corners_.size() && "provided index exceeds the number of corners");
        return corners_[localIdx];
    }
 
    const Geometry geometry() const
    {
        return Geometry(geomType_, corners_);
    }
 
    GridIndexType dofIndex() const
    {
        return dofIdx_;
    }
 
    LocalIndexType localFaceIdx() const
    {
        return localFaceIdx_;
    }
 
private:
    Dune::GeometryType geomType_;
    std::vector<GlobalPosition> corners_;
    Scalar area_;
    GlobalPosition center_;
    GlobalPosition unitOuterNormal_;
    GridIndexType scvfIndex_;
    std::vector<GridIndexType> scvIndices_;
    bool boundary_;
 
    GridIndexType dofIdx_;
    LocalIndexType localFaceIdx_;
};
 
} // end namespace Dumux
 
#endif