vtkGenerateRegionIds.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkGenerateRegionIds_h
#define vtkGenerateRegionIds_h

#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
#include "vtkWrappingHints.h" // For VTK_MARSHALAUTO

#include <set>    // for std::set
#include <string> // for std::string

VTK_ABI_NAMESPACE_BEGIN

class VTKFILTERSCORE_EXPORT VTK_MARSHALAUTO vtkGenerateRegionIds : public vtkPolyDataAlgorithm
{
public:
  vtkTypeMacro(vtkGenerateRegionIds, vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  static vtkGenerateRegionIds* New();


  vtkSetClampMacro(MaxAngle, double, 0, VTK_DOUBLE_MAX);
  vtkGetMacro(MaxAngle, double);


  vtkSetMacro(RegionIdsArrayName, std::string);
  vtkGetMacro(RegionIdsArrayName, std::string);

protected:
  vtkGenerateRegionIds() = default;
  ~vtkGenerateRegionIds() override = default;

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

private:
  vtkGenerateRegionIds(const vtkGenerateRegionIds&) = delete;
  void operator=(const vtkGenerateRegionIds&) = delete;

  vtkIdTypeArray* InitializeOutput(vtkPolyData* input, vtkPolyData* output);

  bool SameRegion(vtkDataArray* normals, double threshold, vtkIdType first, vtkIdType second);

  std::set<vtkIdType> GetCellNeighbors(vtkPolyData* polydata, vtkIdType cellId);

  double MaxAngle = 30;
  std::string RegionIdsArrayName = "vtkRegionIds";
};

VTK_ABI_NAMESPACE_END
#endif