vtkCellCenterDepthSort.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright 2003 Sandia Corporation
// SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Sandia-USGov

#ifndef vtkCellCenterDepthSort_h
#define vtkCellCenterDepthSort_h

#include "vtkRenderingCoreModule.h" // For export macro
#include "vtkVisibilitySort.h"
#include "vtkWrappingHints.h" // For VTK_MARSHALAUTO

VTK_ABI_NAMESPACE_BEGIN
class vtkFloatArray;

class vtkCellCenterDepthSortStack;

class VTKRENDERINGCORE_EXPORT VTK_MARSHALAUTO vtkCellCenterDepthSort : public vtkVisibilitySort
{
public:
  vtkTypeMacro(vtkCellCenterDepthSort, vtkVisibilitySort);
  void PrintSelf(ostream& os, vtkIndent indent) override;
  static vtkCellCenterDepthSort* New();

  void InitTraversal() override;
  vtkIdTypeArray* GetNextCells() override;

protected:
  vtkCellCenterDepthSort();
  ~vtkCellCenterDepthSort() override;

  vtkIdTypeArray* SortedCells;
  vtkIdTypeArray* SortedCellPartition;

  vtkFloatArray* CellCenters;
  vtkFloatArray* CellDepths;
  vtkFloatArray* CellPartitionDepths;

  virtual float* ComputeProjectionVector();
  virtual void ComputeCellCenters();
  virtual void ComputeDepths();

private:
  vtkCellCenterDepthSortStack* ToSort;

  vtkCellCenterDepthSort(const vtkCellCenterDepthSort&) = delete;
  void operator=(const vtkCellCenterDepthSort&) = delete;
};

VTK_ABI_NAMESPACE_END
#endif