vtkHierarchicalDataIterator.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkHierarchicalDataIterator.h,v $

  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 __vtkHierarchicalDataIterator_h
#define __vtkHierarchicalDataIterator_h

#include "vtkCompositeDataIterator.h"

class vtkHierarchicalDataSet;
class vtkHierarchicalDataIteratorInternal;

class VTK_FILTERING_EXPORT vtkHierarchicalDataIterator : public vtkCompositeDataIterator
{
public:
  static vtkHierarchicalDataIterator *New();

  vtkTypeRevisionMacro(vtkHierarchicalDataIterator,vtkCompositeDataIterator);
  void PrintSelf(ostream& os, vtkIndent indent);

  virtual void GoToFirstItem();

  virtual void GoToNextItem();

  virtual int IsDoneWithTraversal();

  virtual vtkDataObject* GetCurrentDataObject();


  void SetDataSet(vtkHierarchicalDataSet* dataset);
  vtkGetObjectMacro(DataSet, vtkHierarchicalDataSet);

protected:
  vtkHierarchicalDataIterator(); 
  virtual ~vtkHierarchicalDataIterator(); 

  void GoToNextNonEmptyLevel();

  vtkHierarchicalDataSet* DataSet;
  vtkHierarchicalDataIteratorInternal* Internal;

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

#endif

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