text: /*=========================================================================
  
   Program:   Visualization Toolkit
   Module:    vtkDataSetGhostGenerator.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   vtkDataSetGhostGenerator
   *
   *
   *  An abstract class that provides common functionality and implements an
   *  interface for all ghost data generators. Ghost data generators accept as
   *  input a partitioned data-set, defined by a vtkMultiBlockDataSet, where each
   *  block corresponds to a partition. The output consists of vtkMultiBlockDataSet
   *  where each block holds the corresponding ghosted data-set. For more details,
   *  see concrete implementations.
   *
   * @sa
   * vtkUniformGridGhostDataGenerator, vtkStructuredGridGhostDataGenerator,
   * vtkRectilinearGridGhostDataGenerator
  */
  
  #ifndef vtkDataSetGhostGenerator_h
  #define vtkDataSetGhostGenerator_h
  
  #include "vtkFiltersGeometryModule.h" // For export macro
  #include "vtkMultiBlockDataSetAlgorithm.h"
  
  // Forward Declarations
  class vtkInformation;
  class vtkInformationVector;
  class vtkMultiBlockDataSet;
  
  class VTKFILTERSGEOMETRY_EXPORT vtkDataSetGhostGenerator:
    public vtkMultiBlockDataSetAlgorithm
  {
  public:
    vtkTypeMacro(vtkDataSetGhostGenerator,vtkMultiBlockDataSetAlgorithm);
    void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
  
    //@{
    /**
     * Set/Get for number of ghost layers to generate.
     */
    vtkSetMacro( NumberOfGhostLayers, int );
    vtkGetMacro( NumberOfGhostLayers, int );
    //@}
  
    // Standard VTK pipeline routines
    int FillInputPortInformation(int port,vtkInformation *info) VTK_OVERRIDE;
    int FillOutputPortInformation(int port, vtkInformation *info) VTK_OVERRIDE;
  
    int RequestData(
        vtkInformation *rqst, vtkInformationVector **inputVector,
        vtkInformationVector* outputVector ) VTK_OVERRIDE;
  
  protected:
    vtkDataSetGhostGenerator();
    ~vtkDataSetGhostGenerator() VTK_OVERRIDE;
  
    /**
     * Generate ghost layers. Implemented by concrete implementations.
     */
    virtual void GenerateGhostLayers(
        vtkMultiBlockDataSet *in, vtkMultiBlockDataSet *out) = 0;
  
  
    int NumberOfGhostLayers;
  
  private:
    vtkDataSetGhostGenerator(const vtkDataSetGhostGenerator&) VTK_DELETE_FUNCTION;
    void operator=(const vtkDataSetGhostGenerator&) VTK_DELETE_FUNCTION;
  
  };
  
  #endif /* vtkDataSetGhostGenerator_h */
  