SundanceCToAInterpolator.hpp

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//                              Sundance
//                 Copyright (2005) Sandia Corporation
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#ifndef SUNDANCE_CTOAINTERPOLATOR_H
#define SUNDANCE_CTOAINTERPOLATOR_H

#include "SundanceDefs.hpp"
#include "SundanceMesh.hpp"
#include "SundanceExpr.hpp"
#include "SundanceDiscreteFunction.hpp"
#include "SundanceDiscreteSpace.hpp"
#include "SundanceAToCPointLocator.hpp"

namespace Sundance
{
  using namespace Teuchos;
  using namespace Playa;

  /**
   * CToAInterpolator interpolates a discrete function at particle positions
   *
   * Note: not tested in parallel.
   */
  class CToAInterpolator
  {
  public:
    /** */
    CToAInterpolator(const AToCPointLocator& locator,
                     const Expr& field);

    /** */
    void interpolate(const Teuchos::Array<double>& positions,
                     Teuchos::Array<double>& results) const ;

   

    /** */
    void interpolate(const std::vector<double>& positions,
      std::vector<double>& results) const 
      {
        Teuchos::Array<double> in(positions.size());
        for (int i=0; i<in.size(); i++) in[i] = positions[i];
        Teuchos::Array<double> out;
        interpolate(in, out);
        for (int i=0; i<out.size(); i++) results[i] = out[i];
      }

    /** */
    void updateField(const Expr& field) ;


  private:

    int dim_;
    int nFacets_;
    int rangeDim_;
    RCP<Array<double> > elemToVecValuesMap_;
    AToCPointLocator locator_;
  };
}


#endif