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QuadCFInterp.H

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#ifndef _QUADCFINTERP_H_
#define _QUADCFINTERP_H_

#include <iostream>
#include <cmath>
#include <cassert>
#include <cstdlib>
#include "REAL.H"
#include "IntVect.H"
#include "Box.H"
#include "BaseFab.H"
#include "DisjointBoxLayout.H"
#include "LevelData.H"
#include "FArrayBox.H"
#include "QuadCFStencil.H"
#include "ProblemDomain.H"


class QuadCFInterp
{
public:



  QuadCFInterp(
               const DisjointBoxLayout& a_fineBoxes,
               const DisjointBoxLayout* a_coarBoxes,
               Real  a_dxFine,
               int a_refRatio,
               int a_nComp,
               const Box& a_domf);


  QuadCFInterp(
               const DisjointBoxLayout& a_fineBoxes,
               const DisjointBoxLayout* a_coarBoxes,
               Real  a_dxFine,
               int a_refRatio,
               int a_nComp,
               const ProblemDomain& a_domf);


  void define(
              const DisjointBoxLayout& a_fineBoxes,
              const DisjointBoxLayout* a_coarBoxes,
              Real  a_dxFine,
              int a_refRatio,
              int a_nComp,
              const ProblemDomain& a_domf);


  QuadCFInterp();

  ~QuadCFInterp();


  void clear();


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


  bool isDefined() const;


protected:
  //boxes for coarse buffers
  BoxLayout m_loCoarBoxes[SpaceDim];
  BoxLayout m_hiCoarBoxes[SpaceDim];

  //fake level identifier.
  int m_level;

  //number of components
  int m_nComp;

  //refinement ratio between levels
  int m_refRatio;

  //mesh spacing at fine level
  Real m_dxFine;

  //cfstencils on low-side faces
  //lives on fine input grid layout
  LayoutData<QuadCFStencil> m_loQCFS[SpaceDim];

  //cfstencils on high-side faces
  //lives on fine input grid layout
  LayoutData<QuadCFStencil> m_hiQCFS[SpaceDim];

  //buffer for coarse data at low edges of fine grids
  BoxLayoutData<FArrayBox> m_hiCoarBuffer[SpaceDim];

  // copiers to copy data from inputCoarLayout to m_hiCoarBuffer
  Copier m_hiCoarCopiers[SpaceDim];

  //buffer for coarse data at high edges of fine grids
  BoxLayoutData<FArrayBox> m_loCoarBuffer[SpaceDim];

  // copiers to copy data from inputCoarLayout to m_loCoarBuffer
  Copier m_loCoarCopiers[SpaceDim];

  DisjointBoxLayout m_inputFineLayout;
  DisjointBoxLayout m_inputCoarLayout;
  bool m_isDefined;

  ProblemDomain m_domainFine;
protected:

  /* Coarse / Fine interpolation operator.
     using one sided differencing
     only at a particular face
  */
  void coarseFineInterp(BaseFab<Real> & a_phif,
                        const BaseFab<Real> & a_phic,
                        const QuadCFStencil& a_qcfs,
                        const Side::LoHiSide a_hiorlo,
                        const int a_idir,
                        const Interval& a_variables) const;

  //get extended phi (lives next to interpivs)
  void getPhiStar(BaseFab<Real> & a_phistar,
                  const BaseFab<Real> & a_phic,
                  const QuadCFStencil& a_qcfs,
                  const Side::LoHiSide a_hiorlo,
                  const int a_idir,
                  const Interval& a_variables) const;

  //interpolate over correct intvectset
  void interpOnIVS(BaseFab<Real> & a_phif,
                   const BaseFab<Real> & a_phiStar,
                   const QuadCFStencil& a_qcfs,
                   const Side::LoHiSide a_hiorlo,
                   const int a_idir,
                   const Interval& a_variables) const;
};

#endif

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