vtkHyperTreeGridGeometryImpl.h

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

#include "vtkHyperTreeGridGeometry.h"
#include "vtkIdTypeArray.h"

#include <vector> // For std::vector

VTK_ABI_NAMESPACE_BEGIN

class vtkDataArray;
class vtkMergePoints;
class vtkPoints;
class vtkUnsignedCharArray;

class vtkHyperTreeGridGeometryImpl
{
public:
  vtkHyperTreeGridGeometryImpl(vtkHyperTreeGrid* input, vtkPoints* outPoints,
    vtkCellArray* outCells, vtkDataSetAttributes* inCellDataAttributes,
    vtkDataSetAttributes* outCellDataAttributes, bool passThroughCellIds,
    const std::string& originalCellIdArrayName, bool fillMaterial);

  virtual ~vtkHyperTreeGridGeometryImpl() = default;

  virtual void GenerateGeometry() = 0;

protected:

  double ComputeDistanceToInterfaceA(const double* xyz) const;
  double ComputeDistanceToInterfaceB(const double* xyz) const;

  void CreateNewCellAndCopyData(const std::vector<vtkIdType>& outPointIds, vtkIdType cellId);

  bool IsMaskedOrGhost(vtkIdType globalNodeId) const;

  bool ProbeForCellInterface(vtkIdType cellId, bool invert = true);

  vtkHyperTreeGrid* Input = nullptr;
  vtkPoints* OutPoints = nullptr;
  vtkCellArray* OutCells = nullptr;
  vtkDataSetAttributes* InCellDataAttributes = nullptr;
  vtkDataSetAttributes* OutCellDataAttributes = nullptr;
  bool FillMaterial = true;

  vtkDataArray* InIntercepts = nullptr;
  vtkDataArray* InNormals = nullptr;

  bool HasInterface = false;

  bool HasInterfaceOnThisCell = false;

  int CellInterfaceType = 2; // pure cell

private:
  vtkUnsignedCharArray* InGhostArray = nullptr;
  vtkBitArray* InMaskArray = nullptr;

  bool PassThroughCellIds = false;
  std::string OriginalCellIdArrayName;

  std::vector<double> CellIntercepts;

  std::vector<double> CellNormals;
};

VTK_ABI_NAMESPACE_END
#endif /* vtkHyperTreeGridGeometryImpl_h */