vtkDecimatePolylineFilter.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkDecimatePolylineFilter_h
#define vtkDecimatePolylineFilter_h
 
#include "vtkDecimatePolylineDistanceStrategy.h" // Default decimation strategy
#include "vtkFiltersCoreModule.h"                // For export macro
#include "vtkPolyDataAlgorithm.h"
#include "vtkSmartPointer.h" // Needed for SP ivars
 
VTK_ABI_NAMESPACE_BEGIN
class vtkPriorityQueue;
 
class VTKFILTERSCORE_EXPORT vtkDecimatePolylineFilter : public vtkPolyDataAlgorithm
{
public:

  vtkTypeMacro(vtkDecimatePolylineFilter, vtkPolyDataAlgorithm);
  static vtkDecimatePolylineFilter* New();
  void PrintSelf(ostream& os, vtkIndent indent) override;


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


  vtkSetClampMacro(MaximumError, double, 0.0, VTK_DOUBLE_MAX);
  vtkGetMacro(MaximumError, double);


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


  vtkSetMacro(DecimationStrategy, vtkDecimatePolylineStrategy*);
  vtkGetObjectMacro(DecimationStrategy, vtkDecimatePolylineStrategy);
 
  /*
   * Inherits from vtkObject GetMTime() but also checks for the DecimationStrategy
   * member MTime.
   * @return The last time the state of the DecimatePolylineFilter got modified.
   */
  vtkMTimeType GetMTime() override;
 
protected:
  vtkDecimatePolylineFilter() = default;
  ~vtkDecimatePolylineFilter() override = default;
 
  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
  int RequestUpdateExtent(vtkInformation* vtkNotUsed(request), vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;
 
  class Polyline;
  double ComputeError(vtkPolyData* input, Polyline* polyline, vtkIdType id);
 
  vtkNew<vtkPriorityQueue> PriorityQueue;
  double TargetReduction = 0.90;
  double MaximumError = VTK_DOUBLE_MAX;
  int OutputPointsPrecision = vtkAlgorithm::DEFAULT_PRECISION;
 
private:
  vtkDecimatePolylineFilter(const vtkDecimatePolylineFilter&) = delete;
  void operator=(const vtkDecimatePolylineFilter&) = delete;
 
  vtkSmartPointer<vtkDecimatePolylineStrategy> DecimationStrategy =
    vtkSmartPointer<vtkDecimatePolylineDistanceStrategy>::New();
};
 
VTK_ABI_NAMESPACE_END
#endif