vtkExtractBlock.h

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

  Program:   Visualization Toolkit
  Module:    vtkExtractBlock.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 vtkExtractBlock_h
#define vtkExtractBlock_h

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

class vtkDataObjectTreeIterator;
class vtkMultiPieceDataSet;

class VTKFILTERSEXTRACTION_EXPORT vtkExtractBlock : public vtkMultiBlockDataSetAlgorithm
{
public:
  static vtkExtractBlock* New();
  vtkTypeMacro(vtkExtractBlock, vtkMultiBlockDataSetAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);


  void AddIndex(unsigned int index);
  void RemoveIndex(unsigned int index);
  void RemoveAllIndices();


  vtkSetMacro(PruneOutput, int);
  vtkGetMacro(PruneOutput, int);
  vtkBooleanMacro(PruneOutput, int);


  vtkSetMacro(MaintainStructure, int);
  vtkGetMacro(MaintainStructure, int);
  vtkBooleanMacro(MaintainStructure, int);

protected:
  vtkExtractBlock();
  ~vtkExtractBlock();

  static vtkInformationIntegerKey* DONT_PRUNE();

  virtual int RequestData(vtkInformation *,
                          vtkInformationVector **,
                          vtkInformationVector *);


  void CopySubTree(vtkDataObjectTreeIterator* loc,
    vtkMultiBlockDataSet* output, vtkMultiBlockDataSet* input);
  bool Prune(vtkMultiBlockDataSet* mblock);
  bool Prune(vtkMultiPieceDataSet* mblock);
  bool Prune(vtkDataObject* mblock);

  int PruneOutput;
  int MaintainStructure;
private:
  vtkExtractBlock(const vtkExtractBlock&) VTK_DELETE_FUNCTION;
  void operator=(const vtkExtractBlock&) VTK_DELETE_FUNCTION;

  class vtkSet;
  vtkSet *Indices;
  vtkSet *ActiveIndices;

};

#endif