datacollectorinterface.hh

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#pragma once
 
#include <cstdint>
#include <vector>
 
#include <dune/grid/common/partitionset.hh>
 
namespace Dune
{
  namespace Vtk
  {
 
    template <class GridViewType, class Derived, class Partition = Partitions::InteriorBorder>
    class DataCollectorInterface
    {
    public:
      static constexpr auto partition = Partition{};
 
      using GridView = GridViewType;
 
      enum { dim = GridView::dimension };
 
      enum { dow = GridView::dimensionworld };
 
    public:
      DataCollectorInterface (GridView const& gridView)
        : gridView_(gridView)
      {}
 
      void update ()
      {
        asDerived().updateImpl();
      }
 
      int ghostLevel () const
      {
        return asDerived().ghostLevelImpl();
      }
 
      std::uint64_t numCells () const
      {
        return asDerived().numCellsImpl();
      }
 
      std::uint64_t numPoints () const
      {
        return asDerived().numPointsImpl();
      }
 
 
      template <class T>
      std::vector<T> points () const
      {
        return asDerived().template pointsImpl<T>();
      }
 
 
      template <class T, class VtkFunction>
      std::vector<T> pointData (VtkFunction const& fct) const
      {
        return asDerived().template pointDataImpl<T>(fct);
      }
 
 
      template <class T, class VtkFunction>
      std::vector<T> cellData (VtkFunction const& fct) const
      {
        return asDerived().template cellDataImpl<T>(fct);
      }
 
    protected: // cast to derived type
 
      Derived& asDerived ()
      {
        return static_cast<Derived&>(*this);
      }
 
      const Derived& asDerived () const
      {
        return static_cast<const Derived&>(*this);
      }
 
    public: // default implementations
 
      void updateImpl ()
      {
        /* do nothing */
      }
 
      int ghostLevelImpl () const
      {
        return gridView_.overlapSize(0);
      }
 
      // Evaluate `fct` in center of cell.
      template <class T, class VtkFunction>
      std::vector<T> cellDataImpl (VtkFunction const& fct) const;
 
    protected:
      GridView gridView_;
    };
 
  } // end namespace Vtk
} // end namespace Dune
 
#include "datacollectorinterface.impl.hh"