p23dlocalinterpolation.hh

// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_P2_3DLOCALINTERPOLATION_HH
#define DUNE_P2_3DLOCALINTERPOLATION_HH
 
#include <vector>
 
namespace Dune
{
  template<class LB>
  class P23DLocalInterpolation
  {
  public:
 
    template<typename F, typename C>
    void interpolate (const F& f, std::vector<C>& out) const
    {
      typename LB::Traits::RangeType y;
 
      out.resize(10);
      typename LB::Traits::DomainType x;
 
      x[0] = 0.0;   x[1] = 0.0;   x[2] = 0.0;
      f.evaluate(x,y); out[0] = y;
 
      x[0] = 1.0;   x[1] = 0.0;   x[2] = 0.0;
      f.evaluate(x,y); out[1] = y;
 
      x[0] = 0.0;   x[1] = 1.0;   x[2] = 0.0;
      f.evaluate(x,y); out[2] = y;
 
      x[0] = 0.0;   x[1] = 0.0;   x[2] = 1.0;
      f.evaluate(x,y); out[3] = y;
 
      x[0] = 0.5;   x[1] = 0.0;   x[2] = 0.0;
      f.evaluate(x,y); out[4] = y;
 
      x[0] = 0.5;   x[1] = 0.5;   x[2] = 0.0;
      f.evaluate(x,y); out[5] = y;
 
      x[0] = 0.0;   x[1] = 0.5;   x[2] = 0.0;
      f.evaluate(x,y); out[6] = y;
 
      x[0] = 0.0;   x[1] = 0.0;   x[2] = 0.5;
      f.evaluate(x,y); out[7] = y;
 
      x[0] = 0.5;   x[1] = 0.0;   x[2] = 0.5;
      f.evaluate(x,y); out[8] = y;
 
      x[0] = 0.0;   x[1] = 0.5;   x[2] = 0.5;
      f.evaluate(x,y); out[9] = y;
    }
  };
}
 
#endif