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

  Program:   Visualization Toolkit
  Module:    vtkDirectedGraph.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.

=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#ifndef vtkDirectedGraph_h
#define vtkDirectedGraph_h

#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkGraph.h"

class VTKCOMMONDATAMODEL_EXPORT vtkDirectedGraph : public vtkGraph
{
public:
  static vtkDirectedGraph *New();
  vtkTypeMacro(vtkDirectedGraph, vtkGraph);
  void PrintSelf(ostream& os, vtkIndent indent);

  virtual int GetDataObjectType() {return VTK_DIRECTED_GRAPH;}

  //BTX

  static vtkDirectedGraph *GetData(vtkInformation *info);
  static vtkDirectedGraph *GetData(vtkInformationVector *v, int i=0);
  //ETX

  virtual bool IsStructureValid(vtkGraph *g);

protected:
  vtkDirectedGraph();
  ~vtkDirectedGraph();

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

#endif