pk1d.hh

// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_PK1DLOCALFINITEELEMENT_HH
#define DUNE_PK1DLOCALFINITEELEMENT_HH
 
#include <cstddef>
 
#include <dune/geometry/type.hh>
 
#include <dune/localfunctions/common/localfiniteelementtraits.hh>
#include <dune/localfunctions/common/localtoglobaladaptors.hh>
#include "pk1d/pk1dlocalbasis.hh"
#include "pk1d/pk1dlocalcoefficients.hh"
#include "pk1d/pk1dlocalinterpolation.hh"
 
namespace Dune
{
 
  template<class D, class R, unsigned int k>
  class Pk1DLocalFiniteElement
  {
  public:
    typedef LocalFiniteElementTraits<Pk1DLocalBasis<D,R,k>,
        Pk1DLocalCoefficients<k>,
        Pk1DLocalInterpolation<Pk1DLocalBasis<D,R,k> > > Traits;
 
    Pk1DLocalFiniteElement ()
    {}
 
    Pk1DLocalFiniteElement (int variant) :
      coefficients(variant)
    {}
 
    Pk1DLocalFiniteElement (const unsigned int vertexmap[3]) :
      coefficients(vertexmap)
    {}
 
    const typename Traits::LocalBasisType& localBasis () const
    {
      return basis;
    }
 
    const typename Traits::LocalCoefficientsType& localCoefficients () const
    {
      return coefficients;
    }
 
    const typename Traits::LocalInterpolationType& localInterpolation () const
    {
      return interpolation;
    }
 
    unsigned int size () const
    {
      return basis.size();
    }
 
    static constexpr GeometryType type ()
    {
      return GeometryTypes::line;
    }
 
  private:
    Pk1DLocalBasis<D,R,k> basis;
    Pk1DLocalCoefficients<k> coefficients;
    Pk1DLocalInterpolation<Pk1DLocalBasis<D,R,k> > interpolation;
  };
 
 
  template<class Geometry, class RF, std::size_t k>
  class Pk1DFiniteElement {
    typedef typename Geometry::ctype DF;
    typedef Pk1DLocalBasis<DF,RF,k> LocalBasis;
    typedef Pk1DLocalInterpolation<LocalBasis> LocalInterpolation;
 
  public:
    struct Traits {
      typedef ScalarLocalToGlobalBasisAdaptor<LocalBasis, Geometry> Basis;
      typedef LocalToGlobalInterpolationAdaptor<
          LocalInterpolation,
          typename Basis::Traits
          > Interpolation;
      typedef Pk1DLocalCoefficients<k> Coefficients;
    };
 
  private:
    static const GeometryType gt;
    static const LocalBasis localBasis;
    static const LocalInterpolation localInterpolation;
 
    typename Traits::Basis basis_;
    typename Traits::Interpolation interpolation_;
    typename Traits::Coefficients coefficients_;
 
  public:
 
    template<class VertexOrder>
    Pk1DFiniteElement(const Geometry &geometry,
                      const VertexOrder& vertexOrder) :
      basis_(localBasis, geometry), interpolation_(localInterpolation),
      coefficients_(vertexOrder.begin(0, 0))
    { }
 
    const typename Traits::Basis& basis() const { return basis_; }
    const typename Traits::Interpolation& interpolation() const
    { return interpolation_; }
    const typename Traits::Coefficients& coefficients() const
    { return coefficients_; }
    const GeometryType &type() const { return gt; }
  };
 
  template<class Geometry, class RF, std::size_t k>
  const GeometryType
  Pk1DFiniteElement<Geometry, RF, k>::gt(GeometryTypes::simplex(2));
 
  template<class Geometry, class RF, std::size_t k>
  const typename Pk1DFiniteElement<Geometry, RF, k>::LocalBasis
  Pk1DFiniteElement<Geometry, RF, k>::localBasis = LocalBasis();
 
  template<class Geometry, class RF, std::size_t k>
  const typename Pk1DFiniteElement<Geometry, RF, k>::LocalInterpolation
  Pk1DFiniteElement<Geometry, RF, k>::localInterpolation =
    LocalInterpolation();
 
 
  template<class Geometry, class RF, std::size_t k>
  struct Pk1DFiniteElementFactory {
    typedef Pk1DFiniteElement<Geometry, RF, k> FiniteElement;
 
 
    template<class VertexOrder>
    const FiniteElement make(const Geometry& geometry,
                             const VertexOrder& vertexOrder)
    { return FiniteElement(geometry, vertexOrder); }
  };
}
 
#endif