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C++

/*=========================================================================
Program: Visualization Toolkit
Module: vtkExtractUnstructuredGridPiece.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.
=========================================================================*/
/**
* @class vtkExtractUnstructuredGridPiece
* @brief Return specified piece, including specified
* number of ghost levels.
*/
#ifndef vtkExtractUnstructuredGridPiece_h
#define vtkExtractUnstructuredGridPiece_h
#include "vtkFiltersParallelModule.h" // For export macro
#include "vtkUnstructuredGridAlgorithm.h"
class vtkIdList;
class vtkIntArray;
class VTKFILTERSPARALLEL_EXPORT vtkExtractUnstructuredGridPiece
: public vtkUnstructuredGridAlgorithm
{
public:
static vtkExtractUnstructuredGridPiece* New();
vtkTypeMacro(vtkExtractUnstructuredGridPiece, vtkUnstructuredGridAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
//@{
/**
* Turn on/off creating ghost cells (on by default).
*/
vtkSetMacro(CreateGhostCells, vtkTypeBool);
vtkGetMacro(CreateGhostCells, vtkTypeBool);
vtkBooleanMacro(CreateGhostCells, vtkTypeBool);
//@}
protected:
vtkExtractUnstructuredGridPiece();
~vtkExtractUnstructuredGridPiece() override {}
// Usual data generation method
int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
int RequestUpdateExtent(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
int RequestInformation(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
// A method for labeling which piece the cells belong to.
void ComputeCellTags(vtkIntArray* cellTags, vtkIdList* pointOwnership, int piece, int numPieces,
vtkUnstructuredGrid* input);
void AddGhostLevel(vtkUnstructuredGrid* input, vtkIntArray* cellTags, int ghostLevel);
vtkTypeBool CreateGhostCells;
private:
void AddFirstGhostLevel(
vtkUnstructuredGrid* input, vtkIntArray* cellTags, int piece, int numPieces);
vtkExtractUnstructuredGridPiece(const vtkExtractUnstructuredGridPiece&) = delete;
void operator=(const vtkExtractUnstructuredGridPiece&) = delete;
};
#endif