structuredyaspgridfactory.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_GRID_YASPGRID_STRUCTUREDYASPGRIDFACTORY_HH
#define DUNE_GRID_YASPGRID_STRUCTUREDYASPGRIDFACTORY_HH
 
#include <memory>
 
#include <dune/grid/utility/structuredgridfactory.hh>
 
namespace Dune
{
  template<class ctype, int dim>
  class StructuredGridFactory<YaspGrid<dim, EquidistantCoordinates<ctype,dim> > >
  {
    typedef YaspGrid<dim, EquidistantCoordinates<ctype,dim> > GridType;
    static const int dimworld = GridType::dimensionworld;
 
  public:
    static std::unique_ptr<GridType>
    createCubeGrid(const FieldVector<ctype,dimworld>& lowerLeft,
                   const FieldVector<ctype,dimworld>& upperRight,
                   const std::array<unsigned int,dim>& elements)
    {
      using std::abs;
      for(int d = 0; d < dimworld; ++d)
        if(abs(lowerLeft[d]) > abs(upperRight[d])*1e-10)
          DUNE_THROW(GridError, className<StructuredGridFactory>()
                     << "::createCubeGrid(): You have to use Yaspgrid<dim"
                     ", EquidistantOffsetCoordinates<ctype,dim> > as your"
                     "grid type for non-trivial origin." );
 
      // construct array of ints instead of unsigned ints
      std::array<int, dim> elem;
      std::copy(elements.begin(), elements.end(), elem.begin());
 
      return std::make_unique<GridType>(upperRight, elem,
                             std::bitset<dim>(), 1);  // default constructor of bitset sets to zero
    }
 
    static std::unique_ptr<GridType>
    createSimplexGrid(const FieldVector<ctype,dimworld>& lowerLeft,
                      const FieldVector<ctype,dimworld>& upperRight,
                      const std::array<unsigned int,dim>& elements)
    {
      DUNE_THROW(GridError, className<StructuredGridFactory>()
                 << "::createSimplexGrid(): Simplices are not supported "
                 "by YaspGrid.");
    }
 
  };
 
  template<class ctype, int dim>
  class StructuredGridFactory<YaspGrid<dim, EquidistantOffsetCoordinates<ctype,dim> > > {
    typedef YaspGrid<dim, EquidistantOffsetCoordinates<ctype,dim> > GridType;
    static const int dimworld = GridType::dimensionworld;
 
  public:
    static std::unique_ptr<GridType>
    createCubeGrid(const FieldVector<ctype,dimworld>& lowerLeft,
                   const FieldVector<ctype,dimworld>& upperRight,
                   const std::array<unsigned int,dim>& elements)
    {
      // construct array of ints instead of unsigned ints
      std::array<int, dim> elem;
      std::copy(elements.begin(), elements.end(), elem.begin());
 
      return std::make_unique<GridType>(lowerLeft, upperRight, elem,
                             std::bitset<dim>(), 1);  // default constructor of bitset sets to zero
    }
 
    static std::unique_ptr<GridType>
    createSimplexGrid(const FieldVector<ctype,dimworld>& lowerLeft,
                      const FieldVector<ctype,dimworld>& upperRight,
                      const std::array<unsigned int,dim>& elements)
    {
      DUNE_THROW(GridError, className<StructuredGridFactory>()
                 << "::createSimplexGrid(): Simplices are not supported "
                 "by YaspGrid.");
    }
 
  };
 
}  // namespace Dune
#endif