vtkCleanPolyData.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkCleanPolyData_h
#define vtkCleanPolyData_h
 
#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
 
#include <unordered_set>
 
VTK_ABI_NAMESPACE_BEGIN
class vtkIncrementalPointLocator;
 
class VTKFILTERSCORE_EXPORT vtkCleanPolyData : public vtkPolyDataAlgorithm
{
public:
  static vtkCleanPolyData* New();
  void PrintSelf(ostream& os, vtkIndent indent) override;
  vtkTypeMacro(vtkCleanPolyData, vtkPolyDataAlgorithm);


  vtkSetMacro(ToleranceIsAbsolute, vtkTypeBool);
  vtkBooleanMacro(ToleranceIsAbsolute, vtkTypeBool);
  vtkGetMacro(ToleranceIsAbsolute, vtkTypeBool);


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


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


  vtkSetMacro(ConvertLinesToPoints, vtkTypeBool);
  vtkBooleanMacro(ConvertLinesToPoints, vtkTypeBool);
  vtkGetMacro(ConvertLinesToPoints, vtkTypeBool);


  vtkSetMacro(ConvertPolysToLines, vtkTypeBool);
  vtkBooleanMacro(ConvertPolysToLines, vtkTypeBool);
  vtkGetMacro(ConvertPolysToLines, vtkTypeBool);


  vtkSetMacro(ConvertStripsToPolys, vtkTypeBool);
  vtkBooleanMacro(ConvertStripsToPolys, vtkTypeBool);
  vtkGetMacro(ConvertStripsToPolys, vtkTypeBool);


  vtkSetMacro(PointMerging, vtkTypeBool);
  vtkGetMacro(PointMerging, vtkTypeBool);
  vtkBooleanMacro(PointMerging, vtkTypeBool);


  virtual void SetLocator(vtkIncrementalPointLocator* locator);
  vtkGetObjectMacro(Locator, vtkIncrementalPointLocator);

  void CreateDefaultLocator(vtkPolyData* input = nullptr);

  void ReleaseLocator() { this->SetLocator(nullptr); }

  vtkMTimeType GetMTime() override;

  virtual void OperateOnPoint(double in[3], double out[3]);

  virtual void OperateOnBounds(double in[6], double out[6]);
 
  // This filter is difficult to stream.
  // To get invariant results, the whole input must be processed at once.
  // This flag allows the user to select whether strict piece invariance
  // is required.  By default it is on.  When off, the filter can stream,
  // but results may change.
  vtkSetMacro(PieceInvariant, vtkTypeBool);
  vtkGetMacro(PieceInvariant, vtkTypeBool);
  vtkBooleanMacro(PieceInvariant, vtkTypeBool);


  vtkSetMacro(OutputPointsPrecision, int);
  vtkGetMacro(OutputPointsPrecision, int);
 
protected:
  vtkCleanPolyData();
  ~vtkCleanPolyData() override;
 
  // Usual data generation method
  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
  int RequestUpdateExtent(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
 
  vtkTypeBool PointMerging;
  double Tolerance;
  double AbsoluteTolerance;
  vtkTypeBool ConvertLinesToPoints;
  vtkTypeBool ConvertPolysToLines;
  vtkTypeBool ConvertStripsToPolys;
  vtkTypeBool ToleranceIsAbsolute;
  vtkIncrementalPointLocator* Locator;
 
  vtkTypeBool PieceInvariant;
  int OutputPointsPrecision;
 
private:
  vtkCleanPolyData(const vtkCleanPolyData&) = delete;
  void operator=(const vtkCleanPolyData&) = delete;
 
  // Check whether a point is a primary point (as opposed to duplicated ghost point).
  bool IsPrimaryPoint(vtkPolyData* input, vtkIdType ptIndex);
  // Check whether a point's data has already been copied to the output.
  bool IsPointDataAlreadyCopied(vtkIdType ptIndex);
  // Insert point into newPts. If already present, only get its id.
  void InsertUniquePoint(vtkIdTypeArray* globalIdsArray, vtkIdType ptIndex, vtkPoints* newPts,
    std::unordered_map<vtkIdType, vtkIdType>& addedGlobalIdsMap, double* point, vtkIdType& ptId);
 
  std::unordered_set<vtkIdType> CopiedPoints;
};
 
VTK_ABI_NAMESPACE_END
#endif