vtkDirectedGraphAlgorithm.h

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

  Program:   Visualization Toolkit
  Module:    vtkDirectedGraphAlgorithm.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 vtkDirectedGraphAlgorithm_h
#define vtkDirectedGraphAlgorithm_h

#include "vtkCommonExecutionModelModule.h" // For export macro
#include "vtkAlgorithm.h"
#include "vtkDirectedGraph.h" // makes things a bit easier

class vtkDataSet;

class VTKCOMMONEXECUTIONMODEL_EXPORT vtkDirectedGraphAlgorithm : public vtkAlgorithm
{
public:
  static vtkDirectedGraphAlgorithm *New();
  vtkTypeMacro(vtkDirectedGraphAlgorithm,vtkAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;

  int ProcessRequest(vtkInformation*,
                             vtkInformationVector**,
                             vtkInformationVector*) VTK_OVERRIDE;

  vtkDirectedGraph* GetOutput() { return this->GetOutput(0); }
  vtkDirectedGraph* GetOutput(int index);

  void SetInputData(vtkDataObject * obj) { this->SetInputData(0, obj); }
  void SetInputData(int index, vtkDataObject* obj);

protected:
  vtkDirectedGraphAlgorithm();
  ~vtkDirectedGraphAlgorithm() VTK_OVERRIDE;

  // convenience method
  virtual int RequestInformation(vtkInformation* request,
                                 vtkInformationVector** inputVector,
                                 vtkInformationVector* outputVector);

  virtual int RequestData(vtkInformation* request,
                          vtkInformationVector** inputVector,
                          vtkInformationVector* outputVector);

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

  // see algorithm for more info
  int FillOutputPortInformation(int port, vtkInformation* info) VTK_OVERRIDE;
  int FillInputPortInformation(int port, vtkInformation* info) VTK_OVERRIDE;

private:
  vtkDirectedGraphAlgorithm(const vtkDirectedGraphAlgorithm&) VTK_DELETE_FUNCTION;
  void operator=(const vtkDirectedGraphAlgorithm&) VTK_DELETE_FUNCTION;
};

#endif