scvandscvfiterators.hh

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#ifndef DUMUX_SCV_AND_SCVF_ITERATORS_HH
#define DUMUX_SCV_AND_SCVF_ITERATORS_HH
 
#include <dune/common/iteratorrange.hh>
#include <dune/common/iteratorfacades.hh>
 
namespace Dumux {

template<class SubControlVolume, class Vector, class FVElementGeometry>
class ScvIterator : public Dune::ForwardIteratorFacade<ScvIterator<SubControlVolume,
                                                                   Vector,
                                                                   FVElementGeometry>,
                                                       const SubControlVolume>
{
    using ThisType = ScvIterator<SubControlVolume, Vector, FVElementGeometry>;
    using Iterator = typename Vector::const_iterator;
public:
    ScvIterator(const Iterator& it, const FVElementGeometry& fvGeometry)
    : it_(it), fvGeometryPtr_(&fvGeometry) {}
 
    ScvIterator() : it_(Iterator()), fvGeometryPtr_(nullptr) {}

    const SubControlVolume& dereference() const
    {
        return fvGeometryPtr_->scv(*it_);
    }
 
    bool equals(const ThisType& other) const
    {
        return it_ == other.it_;
    }
 
    void increment()
    {
        ++it_;
    }
 
private:
    Iterator it_;
    const FVElementGeometry* fvGeometryPtr_;
};

template<class SubControlVolumeFace, class Vector, class FVElementGeometry>
class ScvfIterator : public Dune::ForwardIteratorFacade<ScvfIterator<SubControlVolumeFace,
                                                                     Vector,
                                                                     FVElementGeometry>,
                                                        const SubControlVolumeFace>
{
    using ThisType = ScvfIterator<SubControlVolumeFace, Vector, FVElementGeometry>;
    using Iterator = typename Vector::const_iterator;
public:
    ScvfIterator(const Iterator& it, const FVElementGeometry& fvGeometry)
    : it_(it), fvGeometryPtr_(&fvGeometry) {}
 
    ScvfIterator() : it_(Iterator()), fvGeometryPtr_(nullptr) {}

    const SubControlVolumeFace& dereference() const
    {
        return fvGeometryPtr_->scvf(*it_);
    }
 
    bool equals(const ThisType& other) const
    {
        return it_ == other.it_;
    }
 
    void increment()
    {
        it_++;
    }
 
private:
    Iterator it_;
    const FVElementGeometry* fvGeometryPtr_;
};
 
} // end namespace Dumux
 
#endif