vtkPVMergeTablesComposite.h

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// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkPVMergeTablesComposite_h
#define vtkPVMergeTablesComposite_h

#include "vtkDataObjectAlgorithm.h"
#include "vtkPVVTKExtensionsMiscModule.h" // needed for export macro

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

class vtkDataObjectTree;

class VTKPVVTKEXTENSIONSMISC_EXPORT vtkPVMergeTablesComposite : public vtkDataObjectAlgorithm
{
public:
  static vtkPVMergeTablesComposite* New();
  vtkTypeMacro(vtkPVMergeTablesComposite, vtkDataObjectAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  enum MergeStrategies
  {
    ALL = 0,
    LEAVES = 1,
  };


  vtkGetMacro(MergeStrategy, int);
  vtkSetClampMacro(MergeStrategy, int, ALL, LEAVES);

protected:
  vtkPVMergeTablesComposite();
  ~vtkPVMergeTablesComposite() override;

  int FillInputPortInformation(int port, vtkInformation* info) override;
  int RequestDataObject(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;
  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;

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

  void MergeAllTables(const std::vector<vtkDataObjectTree*>& inputs, vtkDataObjectTree* output);
  void MergeLeavesTables(const std::vector<vtkDataObjectTree*>& inputs, vtkDataObjectTree* output);

  int MergeStrategy = LEAVES; // Default to merging all blocks.
};

#endif