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

  Program:   Visualization Toolkit
  Module:    vtkLinkEdgels.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.

=========================================================================*/
#ifndef vtkLinkEdgels_h
#define vtkLinkEdgels_h

#include "vtkFiltersGeneralModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"

class vtkCellArray;
class vtkDataArray;
class vtkDoubleArray;
class vtkPoints;

class VTKFILTERSGENERAL_EXPORT vtkLinkEdgels : public vtkPolyDataAlgorithm
{
public:
  vtkTypeMacro(vtkLinkEdgels,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkLinkEdgels *New();


  vtkSetMacro(LinkThreshold,double);
  vtkGetMacro(LinkThreshold,double);


  vtkSetMacro(PhiThreshold,double);
  vtkGetMacro(PhiThreshold,double);


  vtkSetMacro(GradientThreshold,double);
  vtkGetMacro(GradientThreshold,double);

protected:
  vtkLinkEdgels();
  ~vtkLinkEdgels() {}

  virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
  virtual int FillInputPortInformation(int port, vtkInformation *info);

  void LinkEdgels(int xdim, int ydim,double *image, vtkDataArray *inVectors,
                  vtkCellArray *newLines, vtkPoints *newPts,
                  vtkDoubleArray *outScalars, vtkDoubleArray *outVectors,
                  int z);
  double GradientThreshold;
  double PhiThreshold;
  double LinkThreshold;
private:
  vtkLinkEdgels(const vtkLinkEdgels&);  // Not implemented.
  void operator=(const vtkLinkEdgels&);  // Not implemented.
};

#endif