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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkGraphGeodesicPath.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.

=========================================================================*/
// .NAME vtkGraphGeodesicPath - Abstract base for classes that generate a geodesic path on a graph (mesh).
// .SECTION Description
// Serves as a base class for algorithms that trace a geodesic on a 
// polygonal dataset treating it as a graph. ie points connecting the 
// vertices of the graph

#ifndef __vtkGraphGeodesicPath_h
#define __vtkGraphGeodesicPath_h

#include "vtkGeodesicPath.h"

class vtkIdList;

class VTK_GRAPHICS_EXPORT vtkGraphGeodesicPath : public vtkGeodesicPath
{
public:
  // Description:
  // Standard methids for printing and determining type information.
  vtkTypeRevisionMacro(vtkGraphGeodesicPath,vtkGeodesicPath);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // The vertex at the start of the shortest path
  vtkGetMacro(StartVertex, vtkIdType);
  vtkSetMacro(StartVertex, vtkIdType);

  // Description:
  // The vertex at the end of the shortest path
  vtkGetMacro(EndVertex, vtkIdType);
  vtkSetMacro(EndVertex, vtkIdType);

protected:
  vtkGraphGeodesicPath();
  ~vtkGraphGeodesicPath();

  vtkIdType StartVertex;
  vtkIdType EndVertex;

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

};

#endif

