vtkGraphLayoutStrategy.h

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

  Program:   Visualization Toolkit
  Module:    vtkGraphLayoutStrategy.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 vtkGraphLayoutStrategy_h
#define vtkGraphLayoutStrategy_h

#include "vtkInfovisLayoutModule.h" // For export macro
#include "vtkObject.h"

class vtkGraph;

class VTKINFOVISLAYOUT_EXPORT vtkGraphLayoutStrategy : public vtkObject
{
public:
  vtkTypeMacro(vtkGraphLayoutStrategy,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);

  virtual void SetGraph(vtkGraph *graph);

  virtual void Initialize() {}

  virtual void Layout()=0;

  virtual int IsLayoutComplete() {return 1;}


  virtual void SetWeightEdges(bool state);
  vtkGetMacro(WeightEdges, bool);


  virtual void SetEdgeWeightField(const char* field);
  vtkGetStringMacro(EdgeWeightField);

protected:
  vtkGraphLayoutStrategy();
  ~vtkGraphLayoutStrategy();

  vtkGraph *Graph;
  char     *EdgeWeightField;
  bool     WeightEdges;
private:

  vtkGraphLayoutStrategy(const vtkGraphLayoutStrategy&);  // Not implemented.
  void operator=(const vtkGraphLayoutStrategy&);  // Not implemented.
};

#endif