libvtk6-dev 6.3.0+dfsg1-11build1 / usr / include / vtk-6.3 / vtkXMLPMultiBlockDataWriter.h

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

  Program:   Visualization Toolkit
  Module:    vtkXMLPMultiBlockDataWriter.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.

=========================================================================*/
// .NAME vtkXMLPMultiBlockDataWriter - parallel writer for
// vtkHierarchicalBoxDataSet.
// .SECTION Description
// vtkXMLPCompositeDataWriter writes (in parallel or serially) the VTK XML
// multi-group, multi-block hierarchical and hierarchical box files. XML
// multi-group data files are meta-files that point to a list of serial VTK
// XML files.

#ifndef vtkXMLPMultiBlockDataWriter_h
#define vtkXMLPMultiBlockDataWriter_h

#include "vtkIOParallelXMLModule.h" // For export macro
#include "vtkXMLMultiBlockDataWriter.h"

class vtkCompositeDataSet;
class vtkMultiProcessController;

class VTKIOPARALLELXML_EXPORT vtkXMLPMultiBlockDataWriter : public vtkXMLMultiBlockDataWriter
{
public:
  static vtkXMLPMultiBlockDataWriter* New();
  vtkTypeMacro(vtkXMLPMultiBlockDataWriter, vtkXMLMultiBlockDataWriter);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Get/Set the number of pieces that are being written in parallel.
  vtkSetMacro(NumberOfPieces, int);
  vtkGetMacro(NumberOfPieces, int);

  // Description:
  // Get/Set the range of pieces assigned to this writer.
  vtkSetMacro(StartPiece, int);
  vtkGetMacro(StartPiece, int);

  // Description:
  // Controller used to communicate data type of blocks.
  // By default, the global controller is used. If you want another
  // controller to be used, set it with this.
  // If no controller is set, only the local blocks will be written
  // to the meta-file.
  virtual void SetController(vtkMultiProcessController*);
  vtkGetObjectMacro(Controller, vtkMultiProcessController);

  // Description:
  // Set whether this instance will write the meta-file. WriteMetaFile
  // is set to flag only on process 0 and all other processes have
  // WriteMetaFile set to 0 by default.
  virtual void SetWriteMetaFile(int flag);

  // See the vtkAlgorithm for a desciption of what these do
  int ProcessRequest(vtkInformation*,
                     vtkInformationVector**,
                     vtkInformationVector*);

//BTX
protected:
  vtkXMLPMultiBlockDataWriter();
  ~vtkXMLPMultiBlockDataWriter();

  // Description:
  // Determine the data types for each of the leaf nodes.
  // Currently each process requires this information in order to
  // simplify creating the file names for both the metadata file
  // as well as the actual dataset files.  It takes into account
  // that a piece of a dataset may be distributed in multiple pieces
  // over multiple processes.
  virtual void FillDataTypes(vtkCompositeDataSet*);

  vtkMultiProcessController* Controller;

  // Description:
  // Internal method called recursively to create the xml tree for
  // the children of compositeData as well as write the actual data
  // set files.  element will only have added nested information.
  // writerIdx is the global piece index used to create unique
  // filenames for each file written.  This function returns 0 if
  // no files were written from compositeData.  Process 0 creates
  // the metadata for all of the processes/files.
  virtual int WriteComposite(vtkCompositeDataSet* compositeData,
                             vtkXMLDataElement* parent, int &currentFileIndex);

  // Description:
  // Internal method to write a non vtkCompositeDataSet subclass as
  // well as add in the file name to the metadata file.
  // Element is the containing XML metadata element that may
  // have data overwritten and added to (the index XML attribute
  // should not be touched though).  writerIdx is the piece index
  // that gets incremented for the globally numbered piece.
  // If this piece exists on multiple processes than it also takes
  // care of that in the metadata description. This function returns
  // 0 if no file was written.
  int ParallelWriteNonCompositeData(
    vtkDataObject* dObj, vtkXMLDataElement* parentXML,
    int currentFileIndex);

  // Description:
  // Return the name of the file given the currentFileIndex (also the current
  // globally numbered piece index), the procId the file exists on, and
  // the dataSetType.
  virtual vtkStdString CreatePieceFileName(
    int currentFileIndex, int procId, int dataSetType);

  // Description:
  // Utility function to remove any already written files
  // in case writer failed.
  virtual void RemoveWrittenFiles(const char* subDirectory);

  // Description:
  // Piece information.
  int StartPiece;
  int NumberOfPieces;

private:
  vtkXMLPMultiBlockDataWriter(const vtkXMLPMultiBlockDataWriter&); // Not implemented.
  void operator=(const vtkXMLPMultiBlockDataWriter&); // Not implemented.

  class vtkInternal;
  vtkInternal* Internal;
//ETX
};

#endif

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