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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkAMRInformation.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef vtkAMRInformation_h
#define vtkAMRInformation_h

#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkObject.h"
#include "vtkAMRBox.h" //for storing AMR Boxes
#include "vtkSmartPointer.h" //for ivars
#include <vector> //for storing AMR Boxes


typedef std::vector<vtkAMRBox> vtkAMRBoxList;

class vtkUnsignedIntArray;
class vtkIntArray;
class vtkDoubleArray;
class vtkAMRIndexIterator;

class VTKCOMMONDATAMODEL_EXPORT vtkAMRInformation : public vtkObject
{
public:
  static vtkAMRInformation* New();
  vtkTypeMacro(vtkAMRInformation, vtkObject);

  void PrintSelf(ostream& os, vtkIndent indent);

  bool operator==(const vtkAMRInformation& other);

  void Initialize(int numLevels, const int* blocksPerLevel);


  vtkGetMacro( GridDescription, int );
  void SetGridDescription(int description);


  void GetOrigin( double origin[3] );
  double* GetOrigin();
  void SetOrigin(const double* origin);


  unsigned int GetNumberOfLevels() const
  { return static_cast<unsigned int>(this->NumBlocks.size()-1);}

  unsigned int GetNumberOfDataSets(unsigned int level) const;


  unsigned int GetTotalNumberOfBlocks()
  { return this->NumBlocks.back();}


  int GetIndex(unsigned int level, unsigned int id) const
  { return this->NumBlocks[level] + id;}

  void ComputeIndexPair(unsigned int index, unsigned int& level, unsigned int& id);

  const double* GetBounds();

  void GetBounds(unsigned int level, unsigned int id, double* bb);

  bool GetOrigin(unsigned int level, unsigned int id, double* origin);

  void GetSpacing(unsigned int level, double spacing[3]);

  bool HasSpacing(unsigned int level);


  void SetAMRBox(unsigned int level, unsigned int id, const vtkAMRBox& box);
  const vtkAMRBox& GetAMRBox(unsigned int level, unsigned int id) const;

  bool GetCoarsenedAMRBox(unsigned int level, unsigned int id, vtkAMRBox& box) const;


  int GetAMRBlockSourceIndex(int index);
  void SetAMRBlockSourceIndex(int index, int sourceId);

  void GenerateRefinementRatio();

  bool HasRefinementRatio();

  void SetRefinementRatio(unsigned int level, int ratio);

  int GetRefinementRatio(unsigned int level) const;

  void SetSpacing(unsigned int level,const double* h);

  bool HasChildrenInformation();

  unsigned int *GetParents(unsigned int level, unsigned int index, unsigned int& numParents);

  unsigned int *GetChildren(unsigned int level, unsigned int index, unsigned int& numChildren);

  void PrintParentChildInfo(unsigned int level, unsigned int index);

  void GenerateParentChildInformation();

  bool Audit();

  bool FindCell(double q[3],unsigned int level, unsigned int index,int &cellIdx);

  bool FindGrid(double q[3], int level, unsigned int& gridId);

  bool FindGrid(double q[3], unsigned int& level, unsigned int& gridId);


  const std::vector<int>& GetNumBlocks() const
  { return this->NumBlocks;}

  std::vector<std::vector<unsigned int> >& GetChildrenAtLevel(unsigned int i)
  { return this->AllChildren[i];}

  void DeepCopy(vtkAMRInformation *other);

 private:
  vtkAMRInformation();
  ~vtkAMRInformation();
  vtkAMRInformation(const vtkAMRInformation&); // Not implemented.
  void operator=(const vtkAMRInformation&); // Not implemented.

  bool HasValidOrigin();
  bool HasValidBounds();
  void UpdateBounds(const int level, const int id);
  void AllocateBoxes(unsigned int n);
  void GenerateBlockLevel();
  void CalculateParentChildRelationShip( unsigned int level,
                                        std::vector<std::vector<unsigned int> >& children,
                                        std::vector<std::vector<unsigned int> >& parents );

  //-------------------------------------------------------------------------
  // Essential information that determines an AMR structure. Must be copied
  //-------------------------------------------------------------------------
  int GridDescription; //example: VTK_XYZ_GRID
  double Origin[3]; //the origin of the whole data set
  vtkAMRBoxList Boxes; // vtkAMRBoxes, one per data set
  std::vector<int> NumBlocks; //NumBlocks[i] stores the total number of blocks from level 0 to level i-1

  vtkSmartPointer<vtkIntArray> SourceIndex; //Typically, this maps to a file block index used by the reader
  vtkSmartPointer<vtkDoubleArray> Spacing; //The grid spacing for all levels
  double Bounds[6]; //the bounds of the entire domain

  //-------------------------------------------------------------------------
  // Auxillary information that be computed
  //-------------------------------------------------------------------------
  vtkSmartPointer<vtkIntArray> Refinement; //refinement ratio between two adjacent levels
  vtkSmartPointer<vtkUnsignedIntArray> BlockLevel; //only necessary if need to call ComputeIndexPair

  //parent child information
  std::vector<std::vector<std::vector<unsigned int> > > AllChildren;
  std::vector<std::vector<std::vector<unsigned int> > > AllParents;
};

#endif