#ifndef DUNE_LOCALFUNCTIONS_RAVIARTTHOMAS12DLOCALCOEFFICIENTS_HH
#define DUNE_LOCALFUNCTIONS_RAVIARTTHOMAS12DLOCALCOEFFICIENTS_HH

#include <cstddef>
#include <vector>

#include "../../common/localkey.hh"

namespace Dune 
{

  /**
   * @ingroup LocalLayoutImplementation
   * \brief Layout map for Raviart-Thomas-1 elements on the reference triangle.
   *
   * \nosubgrouping
   */
  class RT12DLocalCoefficients 
  {

public:
    //! \brief Standard constructor
    RT12DLocalCoefficients () : li(8)
    {
      for (std::size_t i = 0; i < 3; i++)
      {
        li[i] = LocalKey(i,1,0);
        li[3 + i] = LocalKey(i,1,1);
      }

      // last two DOF are associated with the cell (codim = 0)
      li[6] = LocalKey(0,0,0);
      li[7] = LocalKey(0,0,1);
    }

    //! \brief number of coefficients
    std::size_t size () const
    {
      return 8;
    }

    //! \brief get i'th index
    const LocalKey& localKey (std::size_t i) const
    {
      return li[i];
    } 

private:
    std::vector<LocalKey> li;
  };
}
#endif // DUNE_LOCALFUNCTIONS_RAVIARTTHOMAS12DLOCALCOEFFICIENTS_HH
