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AMRNodeSolverAlt.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
// 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
// liability with respect to the infringement of other
// copyrights by any part of this software.
//

// AMRNodeSolverAlt.H
// adapted from AMRSolver by DTGraves, Tues, July 6, 1999
// AMRNodeSolver by petermc, 28 Nov 2000
// AMRNodeSolverAlt by petermc, 22 May 2002

#ifndef AMRNODESOLVERALT_H
#define AMRNODESOLVERALT_H

#include <cstdlib>
#include <cmath>
#include <iostream>
#include <assert.h>
#include "REAL.H"
#include "ProblemDomain.H"
#include "NodeFArrayBox.H"
#include "Vector.H"
#include "IntVectSet.H"
#include "DisjointBoxLayout.H"
#include "LevelData.H"
#include "LevelNodeSolver.H"


class AMRNodeSolverAlt
{
public:



  AMRNodeSolverAlt();


  AMRNodeSolverAlt(const Vector<DisjointBoxLayout>& a_gridsLevel,
                   const Vector<ProblemDomain>&     a_domainLevel,
                   const Vector<Real>&              a_dxLevel,
                   const Vector<int>&               a_refRatio,
                   int                              a_numLevels,
                   int                              a_lBase,
                   const NodeLevelOp* const         a_opin,
                   int                              a_minLength = 1);

  AMRNodeSolverAlt(const Vector<DisjointBoxLayout>& a_gridsLevel,
                   const Vector<Box>&               a_domainLevel,
                   const Vector<Real>&              a_dxLevel,
                   const Vector<int>&               a_refRatio,
                   int                              a_numLevels,
                   int                              a_lBase,
                   const NodeLevelOp* const         a_opin,
                   int                              a_minLength = 1);



  ~AMRNodeSolverAlt();
  

  void define(const Vector<DisjointBoxLayout>& a_gridsLevel,
              const Vector<ProblemDomain>&     a_domainLevel,
              const Vector<Real>&              a_dxLevel,
              const Vector<int>&               a_refRatio,
              int                              a_numLevels,
              int                              a_lBase,
              const NodeLevelOp* const         a_opin,
              int                              a_minLength = 1);

  void define(const Vector<DisjointBoxLayout>& a_gridsLevel,
              const Vector<Box>&               a_domainLevel,
              const Vector<Real>&              a_dxLevel,
              const Vector<int>&               a_refRatio,
              int                              a_numLevels,
              int                              a_lBase,
              const NodeLevelOp* const         a_opin,
              int                              a_minLength = 1);



  bool isDefined() const;



  void setTolerance(Real a_tolerance);


  void setBottomSmoothing(bool a_doBottomSmooth);


  void setMaxIter(int a_maxIter);


  void setVerbose(bool a_verbose);




  void solveAMR(Vector<LevelData<NodeFArrayBox> *>&       a_phiLevel, 
                const Vector<LevelData<NodeFArrayBox> *>& a_rhsLevel);

protected:

  //set data to default values.  not for external use
  void setDefaultValues();
  
  void clear();

  // index of coarsest level on which solution is to be computed.
  int m_lBase;

  // number of levels allowed.
  int m_numLevels; 

  // index of finest level used.  equal to m_numLevels-1.
  int m_finestLevel;

  // refinement ratio between levels.
  Vector<int> m_refRatio;

  // grid spacing at each level.
  Vector<Real> m_dxLevel;

  // grids, cell-centered (disjoint) at each level.
  Vector<DisjointBoxLayout> m_gridsLevel;

  // cell-centered domain at each level.
  Vector<ProblemDomain> m_domainLevel;

  bool m_isDefined;

  // multigrid solver for each level
  Vector<LevelNodeSolver*> m_levelSolver;

  // default is true:  messages are written.
  bool m_verbose;
  
private:
  AMRNodeSolverAlt(const AMRNodeSolverAlt&);
  AMRNodeSolverAlt& operator=(const AMRNodeSolverAlt&);


};
#endif

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