p0ghost.hh

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// -*- tab-width: 4; indent-tabs-mode: nil -*-
#ifndef DUNE_PDELAB_CONSTRAINTS_P0GHOST_HH
#define DUNE_PDELAB_CONSTRAINTS_P0GHOST_HH
 
#include "../common/geometrywrapper.hh"
#include<dune/grid/common/gridenums.hh>
 
#include <dune/typetree/typetree.hh>
 
namespace Dune {
  namespace PDELab {
 
 
    class P0ParallelGhostConstraints
      : public TypeTree::LeafNode
    {
    public:
      enum{doBoundary=false};
      enum{doProcessor=false};
      enum{doSkeleton=false};
      enum{doVolume=true};
 
 
      template<typename P, typename EG, typename LFS, typename T>
      void volume (const P& param, const EG& eg, const LFS& lfs, T& trafo) const
      {
        // nothing to do for interior entities
        if (eg.entity().partitionType()==Dune::InteriorEntity)
          return;
 
        // constrain ghost entities
        else if  (eg.entity().partitionType()==Dune::GhostEntity){
          typename T::RowType empty;
          typedef typename LFS::Traits::SizeType size_type;
          for (size_type i=0; i<lfs.size(); i++){
            trafo[lfs.dofIndex(i)] = empty;
          }
        }
 
      }
    };
 
  }
}
 
#endif // DUNE_PDELAB_CONSTRAINTS_P0GHOST_HH