subdomaingrid/intersectioniterator.hh

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#ifndef DUNE_MULTIDOMAINGRID_SUBDOMAINGRID_INTERSECTIONITERATOR_HH
#define DUNE_MULTIDOMAINGRID_SUBDOMAINGRID_INTERSECTIONITERATOR_HH
 
#include <dune/grid/common/intersectioniterator.hh>
 
#include "intersection.hh"
 
namespace Dune {
 
namespace mdgrid {
 
namespace subdomain {
 
template<
  typename GridImp,
  typename IndexSet,
  typename MultiDomainIntersectionIterator
  >
class IntersectionIteratorWrapper {
 
  template<class, class, class>
  friend class Dune::IntersectionIterator;
 
  template<class, class>
  friend class Dune::Intersection;
 
  using MultiDomainIntersection = typename MultiDomainIntersectionIterator::Intersection;
  using IntersectionWrapper     = Dune::mdgrid::subdomain::IntersectionWrapper<
    GridImp,
    IndexSet,
    MultiDomainIntersection
    >;
 
public:
 
  using Intersection            = Dune::Intersection<GridImp,IntersectionWrapper>;
 
  IntersectionIteratorWrapper()
    : _indexSet(nullptr)
  {}
 
  IntersectionIteratorWrapper(const IndexSet* indexSet, const MultiDomainIntersectionIterator& multiDomainIterator)
    : _indexSet(indexSet)
    , _multiDomainIterator(multiDomainIterator)
  {}
 
  const auto& hostIntersectionIterator() const {
    return GridImp::MultiDomainGrid::getRealImplementation(_multiDomainIterator).hostIntersectionIterator();
  }
 
  bool equals(const IntersectionIteratorWrapper& rhs) const {
    return _indexSet == rhs._indexSet && _multiDomainIterator == rhs._multiDomainIterator;
  }
 
  void increment() {
    ++_multiDomainIterator;
  }
 
  Intersection dereference() const {
    return {IntersectionWrapper(_indexSet,*_multiDomainIterator)};
  }
 
private:
 
  const IndexSet* _indexSet;
  MultiDomainIntersectionIterator _multiDomainIterator;
 
};
 
 
} // namespace subdomain
 
} // namespace mdgrid
 
} // namespace Dune
 
#endif // DUNE_MULTIDOMAINGRID_SUBDOMAINGRID_INTERSECTIONITERATOR_HH