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

 Program:   Visualization Toolkit
 Module:    vtkRectilinearGridPartitioner.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.

 =========================================================================*/
// .NAME vtkRectilinearGridPartitioner.h -- Partitions a rectilinear grid by RCB
//
// .SECTION Description
//  A concrete implementation of vtkMultiBlockDataSetAlgorithm that provides
//  functionality for partitioning a VTK rectilinear dataset. The partitioning
//  methd used is Recursive Coordinate Bisection (RCB) where each time the
//  longest dimension is split.
//
// .SECTION See Also
//  vtkUniformGridPartitioner vtkStructuredGridPartitioner
#ifndef VTKRECTILINEARGRIDPARTITIONER_H_
#define VTKRECTILINEARGRIDPARTITIONER_H_

#include "vtkFiltersGeometryModule.h" // For export macro
#include "vtkMultiBlockDataSetAlgorithm.h"

class vtkInformation;
class vtkInformationVector;
class vtkIndent;
class vtkDoubleArray;
class vtkRectilinearGrid;

class VTKFILTERSGEOMETRY_EXPORT vtkRectilinearGridPartitioner :
  public vtkMultiBlockDataSetAlgorithm
{
public:
  static vtkRectilinearGridPartitioner *New();
  vtkTypeMacro(vtkRectilinearGridPartitioner, vtkMultiBlockDataSetAlgorithm);
  void PrintSelf(ostream &oss, vtkIndent indent);

  // Description:
  // Set/Get macro for the number of subdivisions.
  vtkGetMacro(NumberOfPartitions,int);
  vtkSetMacro(NumberOfPartitions,int);

  // Description:
  // Set/Get macro for the number of ghost layers.
  vtkGetMacro(NumberOfGhostLayers,int);
  vtkSetMacro(NumberOfGhostLayers,int);

  // Description:
  vtkGetMacro(DuplicateNodes,int);
  vtkSetMacro(DuplicateNodes,int);
  vtkBooleanMacro(DuplicateNodes,int);

protected:
  vtkRectilinearGridPartitioner();
  virtual ~vtkRectilinearGridPartitioner();

  // Description:
  // Extracts the coordinates
  void ExtractGridCoordinates(
      vtkRectilinearGrid *grd, int subext[6],
      vtkDoubleArray *xcoords,
      vtkDoubleArray *ycoords,
      vtkDoubleArray *zcoords );

  // Standard Pipeline methods
  virtual int RequestData(
     vtkInformation*,vtkInformationVector**,vtkInformationVector*);
  virtual int FillInputPortInformation(int port, vtkInformation *info);
  virtual int FillOutputPortInformation(int port, vtkInformation *info);

  int NumberOfPartitions;
  int NumberOfGhostLayers;
  int DuplicateNodes;

private:
  vtkRectilinearGridPartitioner(const vtkRectilinearGridPartitioner &); // Not implemented
  void operator=(const vtkRectilinearGridPartitioner &); // Not implemented
};

#endif /* VTKRECTILINEARGRIDPARTITIONER_H_ */