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NodeMGInterp.H

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//
// This software is copyright (C) by the Lawrence Berkeley
// National Laboratory.  Permission is granted to reproduce
// this software for non-commercial purposes provided that
// this notice is left intact.
// 
// It is acknowledged that the U.S. Government has rights to
// this software under Contract DE-AC03-765F00098 between
// the U.S.  Department of Energy and the University of
// California.
//
// This software is provided as a professional and academic
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// NodeMGInterp.H
// petermc, 20 Jun 2001
#ifndef NODEMGINTERP_H
#define NODEMGINTERP_H

#include "REAL.H"
#include "LevelData.H"
#include "NodeFArrayBox.H"


class NodeMGInterp
{
public:
  NodeMGInterp();

  ~NodeMGInterp();

  NodeMGInterp(const DisjointBoxLayout& a_grids,
               int a_numcomps,
               int a_refRatio,
               const Box& a_domain);

  NodeMGInterp(const DisjointBoxLayout& a_grids,
               int a_numcomps,
               int a_refRatio,
               const ProblemDomain& a_domain);


  void define(const DisjointBoxLayout& a_grids,
              int a_numcomps,
              int a_refRatio,
              const ProblemDomain& a_domain);

  void define(const DisjointBoxLayout& a_grids,
              int a_numcomps,
              int a_refRatio,
              const Box& a_domain);


  void interpToFine(LevelData<NodeFArrayBox>& a_fine,
                    const LevelData<NodeFArrayBox>& a_coarse,
                    bool a_sameGrids = false);

  bool isDefined() const;
  

protected:
  bool is_defined;

  // the refinement ratio
  int m_refRatio;

  // work array for the coarse level data in a domain that is the
  // outline of the fine level domain on the coarse level
  BoxLayoutData<NodeFArrayBox> m_coarsenedFine;

  DisjointBoxLayout m_grids;

  // problem domain
  ProblemDomain m_domain;

  // reference box used in interpolation
  Box m_boxRef;

  // weights of corners in interpolation
  FArrayBox m_weights;
};

#endif

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