vtkDecimatePolylineFilter.h

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

  Program:   Visualization Toolkit
  Module:    vtkDecimatePolylineFilter.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 vtkDecimatePolylineFilter_h
#define vtkDecimatePolylineFilter_h

#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkSmartPointer.h" // Needed for SP ivars

#include "vtkPolyDataAlgorithm.h"

class vtkPriorityQueue;


class VTKFILTERSCORE_EXPORT vtkDecimatePolylineFilter : public vtkPolyDataAlgorithm
{
public:

  vtkTypeMacro(vtkDecimatePolylineFilter,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkDecimatePolylineFilter *New();


  vtkSetClampMacro(TargetReduction,double,0.0,1.0);
  vtkGetMacro(TargetReduction,double);


  vtkSetMacro(OutputPointsPrecision,int);
  vtkGetMacro(OutputPointsPrecision,int);

protected:
  vtkDecimatePolylineFilter();
  ~vtkDecimatePolylineFilter();

  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);

  double ComputeError( vtkPolyData* input, int prev, int id, int next );
  void UpdateError( vtkPolyData* input, int iId );

  int GetPrev( int iId );
  int GetNext( int iId );

  struct    vtkDecimatePolylineVertexErrorSTLMap;
  vtkDecimatePolylineVertexErrorSTLMap*  ErrorMap;

  vtkSmartPointer< vtkPriorityQueue >   PriorityQueue;
  bool                                  Closed;
  double                                TargetReduction;
  int                                   OutputPointsPrecision;

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

#endif