common/gridfactory.hh

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// SPDX-FileCopyrightText: Copyright (C) DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_GRID_COMMON_GRIDFACTORY_HH
#define DUNE_GRID_COMMON_GRIDFACTORY_HH
 
#include <memory>
#include <vector>
 
#include <dune/common/deprecated.hh>
#define DUNE_FUNCTION_HH_SILENCE_DEPRECATION
#include <dune/common/function.hh>
#include <dune/common/fvector.hh>
#include <dune/common/parallel/mpihelper.hh>
 
#include <dune/geometry/type.hh>
 
#include <dune/grid/common/boundarysegment.hh>
#include <dune/grid/common/grid.hh>
 
namespace Dune
{
 
  template <class GridType>
  class GridFactoryInterface
  {
 
  protected:
    static const int dimension = GridType::dimension;
 
    constexpr static int dimworld = GridType::dimensionworld;
 
    typedef typename GridType::ctype ctype;
 
  public:
    template< int codim >
    struct Codim
    {
      typedef typename GridType::template Codim< codim >::Entity Entity;
    };
 
    GridFactoryInterface()
    {}
 
    virtual ~GridFactoryInterface ()
    {}
 
    virtual void insertVertex(const FieldVector<ctype,dimworld>& pos) = 0;
 
    virtual void insertElement(const GeometryType& type,
                               const std::vector<unsigned int>& vertices) = 0;
 
    DUNE_NO_DEPRECATED_BEGIN
    [[deprecated("[After Dune 2.7]: VirtualFunction is deprecated, use the "
                 "overload taking a std::function instead")]]
    virtual void
    insertElement([[maybe_unused]] const GeometryType& type,
                  [[maybe_unused]] const std::vector<unsigned int>& vertices,
                  [[maybe_unused]] const std::shared_ptr<VirtualFunction<
                                         FieldVector<ctype,dimension>,
                                         FieldVector<ctype,dimworld>
                         > >& elementParametrization)
    {
      DUNE_THROW(GridError, "This grid does not support parametrized elements!");
    }
    DUNE_NO_DEPRECATED_END
 
    virtual void
    insertElement(const GeometryType& type,
                  const std::vector<unsigned int>& vertices,
                  std::function<FieldVector<ctype,dimworld>
                                  (FieldVector<ctype,dimension>)>
                       elementParametrization)
    {
      // note: this forward to the overload taking a Virtual function during
      // the deprecation period, once that is over it should the throwing of
      // the exception should be moved here directly
      using Domain = FieldVector<ctype,dimension>;
      using Range = FieldVector<ctype,dimworld>;
      DUNE_NO_DEPRECATED_BEGIN
      auto f =
        makeVirtualFunction<Domain, Range>(std::move(elementParametrization));
      insertElement(type, vertices,
                    std::make_unique<decltype(f)>(std::move(f)));
      DUNE_NO_DEPRECATED_END
    }
 
    virtual void insertBoundarySegment(const std::vector<unsigned int>& vertices) = 0;
 
    virtual void insertBoundarySegment([[maybe_unused]] const std::vector<unsigned int>& vertices,
                                       [[maybe_unused]] const std::shared_ptr<BoundarySegment<dimension,dimworld> >& boundarySegment)
    {
      DUNE_THROW(GridError, "This grid does not support parametrized boundary segments!");
    }
 
    virtual std::unique_ptr<GridType> createGrid() = 0;
 
    virtual unsigned int
    insertionIndex ( [[maybe_unused]] const typename Codim< 0 >::Entity &entity ) const
    {
      DUNE_THROW( NotImplemented, "insertion indices have not yet been implemented." );
    }
 
    virtual unsigned int
    insertionIndex ( [[maybe_unused]] const typename Codim< dimension >::Entity &entity ) const
    {
      DUNE_THROW( NotImplemented, "insertion indices have not yet been implemented." );
    }
 
    virtual unsigned int
    insertionIndex ( [[maybe_unused]] const typename GridType::LeafIntersection &intersection ) const
    {
      DUNE_THROW( NotImplemented, "insertion indices have not yet been implemented." );
    }
 
 
    virtual bool
    wasInserted ( [[maybe_unused]] const typename GridType::LeafIntersection &intersection ) const
    {
      DUNE_THROW( NotImplemented, "insertion indices have not yet been implemented." );
    }
 
    using Communication = Dune::Communication<typename MPIHelper::MPICommunicator>;
 
    Communication comm() const
    {
      return Communication(MPIHelper::getLocalCommunicator());
    }
  };
 
 
  template <class GridType>
  class GridFactory : public GridFactoryInterface<GridType> {
 
    typedef GridFactoryInterface<GridType> Base;
 
    constexpr static int dimworld = GridType::dimensionworld;
 
    typedef typename GridType::ctype ctype;
 
  public:
 
    // use default implementation from base class
    using Base::insertBoundarySegment;
 
    GridFactory() {
      DUNE_THROW(GridError, "There is no grid factory for this grid type!");
    }
 
    virtual void insertVertex([[maybe_unused]] const FieldVector<ctype,dimworld>& pos) {
      DUNE_THROW(GridError, "There is no grid factory for this grid type!");
    }
 
    virtual void insertElement([[maybe_unused]] const GeometryType& type,
                               [[maybe_unused]] const std::vector<unsigned int>& vertices) {
      DUNE_THROW(GridError, "There is no grid factory for this grid type!");
    }
 
    virtual void insertBoundarySegment([[maybe_unused]] const std::vector<unsigned int>& vertices) {
      DUNE_THROW(GridError, "There is no grid factory for this grid type!");
    }
 
    virtual std::unique_ptr<GridType> createGrid() {
      DUNE_THROW(GridError, "There is no grid factory for this grid type!");
    }
 
  };
 
}
 
#endif