dox/Filtering/vtkGraphAlgorithm.h

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

  Program:   Visualization Toolkit
  Module:    vtkGraphAlgorithm.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 __vtkGraphAlgorithm_h
#define __vtkGraphAlgorithm_h

#include "vtkAlgorithm.h"
#include "vtkGraph.h" // makes things a bit easier

class vtkDataSet;

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


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


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


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

protected:
  vtkGraphAlgorithm();
  ~vtkGraphAlgorithm();

  // 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*);


  virtual int RequestDataObject(vtkInformation*, 
                                vtkInformationVector** inputVector, 
                                vtkInformationVector* outputVector);

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

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

#endif