virtualrefinement.hh

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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_GEOMETRY_VIRTUALREFINEMENT_HH
#define DUNE_GEOMETRY_VIRTUALREFINEMENT_HH
 
#include <vector>
 
#include <dune/common/fvector.hh>
 
#include "refinement.hh"
#include "type.hh"
 
namespace Dune
{
  // //////////////////////////////////////////
  //
  // The virtual base class and its iterators
  //
 
  //
  // Refinement
  //
 
  template<int dimension, class CoordType>
  class VirtualRefinement
  {
  public:
    template<int codimension>
    struct Codim;
    typedef typename Codim<dimension>::SubEntityIterator VertexIterator;
    typedef typename Codim<0>::SubEntityIterator ElementIterator;
 
    typedef FieldVector<CoordType, dimension> CoordVector;
    typedef std::vector<int> IndexVector;
 
    template<int codimension>
    class SubEntityIteratorBack;
    typedef SubEntityIteratorBack<dimension> VertexIteratorBack;
    typedef SubEntityIteratorBack<0> ElementIteratorBack;
 
    virtual int nVertices(Dune::RefinementIntervals tag) const = 0;
 
    VertexIterator vBegin(Dune::RefinementIntervals tag) const;
 
    VertexIterator vEnd(Dune::RefinementIntervals tag) const;
 
    virtual int nElements(Dune::RefinementIntervals tag) const = 0;
 
    ElementIterator eBegin(Dune::RefinementIntervals tag) const;
 
    ElementIterator eEnd(Dune::RefinementIntervals tag) const;
 
    virtual ~VirtualRefinement()
    {}
 
  protected:
    virtual VertexIteratorBack *vBeginBack(Dune::RefinementIntervals tag) const = 0;
    virtual VertexIteratorBack *vEndBack(Dune::RefinementIntervals tag) const = 0;
    virtual ElementIteratorBack *eBeginBack(Dune::RefinementIntervals tag) const = 0;
    virtual ElementIteratorBack *eEndBack(Dune::RefinementIntervals tag) const = 0;
  };
 
  template<int dimension, class CoordType>
  template<int codimension>
  struct VirtualRefinement<dimension, CoordType>::Codim
  {
    class SubEntityIterator;
  };
 
  // ////////////////////////
  //
  // The refinement builder
  //
 
  template<int dimension, class CoordType>
  VirtualRefinement<dimension, CoordType> &
  buildRefinement(GeometryType geometryType, GeometryType coerceTo);
 
} // namespace Dune
 
#include "virtualrefinement.cc"
 
#endif // DUNE_GEOMETRY_VIRTUALREFINEMENT_HH