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PoissonOp.H

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// DTGraves, Weds, July 21, 1999

#ifndef _POISSONOP_H_
#define _POISSONOP_H_

#include <iostream>
#include <cmath>
#include <cassert>
#include <cstdlib>

#include "REAL.H"
#include "IntVect.H"
#include "Box.H"
#include "DisjointBoxLayout.H"
#include "LevelData.H"
#include "BaseFab.H"
#include "FArrayBox.H"
#include "QuadCFInterp.H"
#include "Copier.H"

#include "GhostBC.H"
#include "LevelOp.H"
#include "CFIVS.H"
#include "BaseBottomSmoother.H"


class PoissonOp: public LevelOp
{
public:
  PoissonOp();

  ~PoissonOp();


  virtual LevelOp* new_levelop() const;


  void levelGSMC(LevelData<FArrayBox>&       a_phi,
                 const LevelData<FArrayBox>& a_rhs);

  virtual bool isDefined() const;


  void define(const DisjointBoxLayout& a_grids,
              const DisjointBoxLayout* a_baseBAPtr,
              Real                     a_dxLevel,
              int                      a_refRatio,
              const ProblemDomain&     a_domain,
              bool                     a_homogeneousOnly=false,
              int                      a_ncomp = 1);


  void define(const LevelOp* a_opfine,
              int            a_reftoFine);


  void define(const DisjointBoxLayout& a_grids,
              const DisjointBoxLayout* a_baseBAPtr,
              Real                     a_dxLevel,
              int                      a_refRatio,
              const Box&               a_domain,
              bool                     a_homogeneousOnly=false,
              int                      a_ncomp = 1);


  void smooth(LevelData<FArrayBox>&       a_phi,
              const LevelData<FArrayBox>& a_rhs);


  virtual void levelPreconditioner(LevelData<FArrayBox>&       a_phihat,
                                   const LevelData<FArrayBox>& a_rhshat);


  void applyOpI(LevelData<FArrayBox>&       a_phi,
                const LevelData<FArrayBox>* a_phicPtr,
                LevelData<FArrayBox>&       a_lofPhi);


  void applyOpIcfHphys(LevelData<FArrayBox>&       a_phi,
                       const LevelData<FArrayBox>* a_phicPtr,
                       LevelData<FArrayBox>&       a_lofPhi);


  void applyOpH(LevelData<FArrayBox>& a_phi,
                LevelData<FArrayBox>& a_lofPhi);


  void CFInterp(LevelData<FArrayBox>&       a_phif,
                const LevelData<FArrayBox>& a_phic);


  void applyOpHcfIphys(LevelData<FArrayBox>& a_phi,
                       LevelData<FArrayBox>& a_lOfPhi);


  void homogeneousCFInterp(LevelData<FArrayBox>& a_phif);

  void setDomainGhostBC(const DomainGhostBC& a_dombcin);

  void setBottomSmoother(const BaseBottomSmoother& a_bottomSmoother);


  void
  homogeneousCFInterp(LevelData<FArrayBox>& a_phif,
                      const DataIndex&      a_datInd,
                      int                   a_idir,
                      Side::LoHiSide        a_hiorlo);


  void bottomSmoother(LevelData<FArrayBox>&       a_phi,
                      const LevelData<FArrayBox>& a_rhs);


  void getFlux(FArrayBox&       a_fineFlux,
               const FArrayBox& a_data,
               const DataIndex& a_datInd,
               int              a_dir);

  virtual void setConvergenceMetric(Real a_metric, int a_comp);

protected:
  DomainGhostBC m_domghostbc;

  ProblemDomain m_domain;

  DisjointBoxLayout m_grids;

  Copier m_exchangeCopier;

  DisjointBoxLayout m_baseBA;

  int m_ncomp;

  int m_refRatio;

  Real m_dxLevel;

  Real m_dxCrse;

  /*
    Object which performs Coarse-fine interpolation between this level
    and the next coarser level
  */
  QuadCFInterp m_quadCFI;

  BaseBottomSmoother* m_bottomSmootherPtr;

  bool m_isDefined;

  bool m_isBCDefined;

  bool m_ihcfiEnabled;

  LayoutData<CFIVS> m_loCFIVS[SpaceDim];
  LayoutData<CFIVS> m_hiCFIVS[SpaceDim];

private:
  // Internally useful functions
  void levelGSRB(LevelData<FArrayBox>&       a_phi,
                 const LevelData<FArrayBox>& a_rhs);

//   void interpOnIVS(LevelData<FArrayBox>& a_phif,
//                    const FArrayBox&      a_phistar,
//                    const DataIndex&      a_datInd,
//                    const int             a_idir,
//                    const Side::LoHiSide  a_hiorlo,
//                    const IntVectSet&     a_interpIVS);

  void interpOnIVSHomo(LevelData<FArrayBox>& a_phif,
                       const DataIndex&      a_datInd,
                       const int             a_idir,
                       const Side::LoHiSide  a_hiorlo,
                       const IntVectSet&     a_interpIVS);

  void clearMemory();

  void setDefaultValues();
};

#endif

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