vtkPUnstructuredGridGhostCellsGenerator.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkPUnstructuredGridGhostCellsGenerator.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/

#ifndef vtkPUnstructuredGridGhostCellsGenerator_h
#define vtkPUnstructuredGridGhostCellsGenerator_h

#include "vtkFiltersParallelGeometryModule.h" // For export macro
#include "vtkUnstructuredGridGhostCellsGenerator.h"
#include <vector> // For passing data between methods

class vtkMultiProcessController;

class VTKFILTERSPARALLELGEOMETRY_EXPORT vtkPUnstructuredGridGhostCellsGenerator:
  public vtkUnstructuredGridGhostCellsGenerator
{
  vtkTypeMacro(vtkPUnstructuredGridGhostCellsGenerator, vtkUnstructuredGridGhostCellsGenerator);

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

  static vtkPUnstructuredGridGhostCellsGenerator *New();


  void SetController(vtkMultiProcessController *c);
  vtkGetObjectMacro(Controller, vtkMultiProcessController);

protected:
  vtkPUnstructuredGridGhostCellsGenerator();
  ~vtkPUnstructuredGridGhostCellsGenerator() override;

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

  void GetFirstGhostLayer(int, vtkUnstructuredGrid *);

  void ExchangeBoundsAndDetermineNeighbors(std::vector<double>&);
  void ExtractAndReduceSurfacePointsShareData(std::vector<double>&);
  void ComputeSharedPoints();

  void ExtractAndSendGhostCells(vtkUnstructuredGridBase *);

  void ReceiveAndMergeGhostCells(int, int, vtkUnstructuredGridBase *,
    vtkUnstructuredGrid *);

  void AddGhostLayer(int ghostLevel, int maxGhostLevel);

  void FindGhostCells();

  void AddGlobalCellIds();

  void RemoveGlobalCellIds();

  vtkMultiProcessController *Controller;

private:
  struct vtkInternals;
  vtkInternals *Internals;

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

#endif