vtkPVContourFilter.h

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

#include "vtkContourFilter.h"
#include "vtkHyperTreeGridContour.h"                // for vtkHyperTreeGridContour
#include "vtkPVVTKExtensionsFiltersGeneralModule.h" // needed for exports

class vtkAMRContourFilter;
class VTKPVVTKEXTENSIONSFILTERSGENERAL_EXPORT vtkPVContourFilter : public vtkContourFilter
{
public:
  vtkTypeMacro(vtkPVContourFilter, vtkContourFilter);

  void PrintSelf(ostream& os, vtkIndent indent) override;

  static vtkPVContourFilter* New();


  vtkGetMacro(HTGStrategy3D, int);
  vtkSetClampMacro(HTGStrategy3D, int, vtkHyperTreeGridContour::USE_VOXELS,
    vtkHyperTreeGridContour::USE_DECOMPOSED_POLYHEDRA);


  vtkSetMacro(UseImplicitArraysHTG, bool);
  vtkGetMacro(UseImplicitArraysHTG, bool);
  vtkBooleanMacro(UseImplicitArraysHTG, bool);

protected:
  vtkPVContourFilter();
  ~vtkPVContourFilter() override;

  int RequestData(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;

  int FillInputPortInformation(int port, vtkInformation* info) override;

  int ContourUsingSuperclass(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector);

  void CleanOutputScalars(vtkDataArray* outScalars);

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

  // Strategy used to represent HTG dual cells in 3D
  int HTGStrategy3D = vtkHyperTreeGridContour::USE_VOXELS;

  // Use implicit arrays to store contour values in case of HTG input
  bool UseImplicitArraysHTG = false;

  // Keep this one around as it supports caching
  vtkNew<vtkAMRContourFilter> AMRContourFilter;
};

#endif // vtkPVContourFilter_h