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NodeMGInterp.H

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/*  _______              __
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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
// contribution for joint exchange. Thus it is experimental,
// is provided ``as is'', with no warranties of any kind
// whatsoever, no support, no promise of updates, or printed
// documentation. By using this software, you acknowledge
// that the Lawrence Berkeley National Laboratory and
// Regents of the University of California shall have no
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// copyrights by any part of this software.
//

#ifndef NODEMGINTERP_H
#define NODEMGINTERP_H

#include "REAL.H"
#include "LevelData.H"
#include "NodeFArrayBox.H"
#include "ProblemDomain.H"
#include "DisjointBoxLayout.H"
#include "NodeMGInterp2.H"


class NodeMGInterp
{
public:
  NodeMGInterp();

  ~NodeMGInterp();

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

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


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

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


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

  bool isDefined() const;
  

protected:

  void clearMemory();

  bool is_defined;

  // the number of coarsenings to be done:  this is log2(m_refRatio).
  int m_coarsenings;

  // data at intermediate coarsening levels.  length m_coarsenings-1.
  Vector< LevelData<NodeFArrayBox>* > m_inter;

  // vector of interpolating objects.  length m_coarsenings.
  // m_avg2[i] averages refined versions of the SAME grids if i > 1,
  // and in general DIFFERENT grids if i == 0.
  Vector<NodeMGInterp2*> m_interp2;
};

#endif

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