vtkXMLPDataReader.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkXMLPDataReader.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 vtkXMLPDataReader_h
#define vtkXMLPDataReader_h
 
#include "vtkIOXMLModule.h" // For export macro
#include "vtkXMLReader.h"
 
class vtkDataArray;
class vtkDataSet;
class vtkXMLDataReader;
 
class VTKIOXML_EXPORT vtkXMLPDataReader : public vtkXMLReader
{
public:
  vtkTypeMacro(vtkXMLPDataReader,vtkXMLReader);
  void PrintSelf(ostream& os, vtkIndent indent);
 
 
  vtkGetMacro(NumberOfPieces, int);
 
  // For the specified port, copy the information this reader sets up in
  // SetupOutputInformation to outInfo
  virtual void CopyOutputInformation(vtkInformation *outInfo, int port);
 
protected:
  vtkXMLPDataReader();
  ~vtkXMLPDataReader();
 
  // Pipeline execute information driver.  Called by vtkXMLReader.
  int ReadXMLInformation();
  virtual void SetupOutputInformation(vtkInformation *outInfo);
 
  int ReadPrimaryElement(vtkXMLDataElement* ePrimary);
 
  vtkDataSet* GetPieceInputAsDataSet(int piece);
  void SetupOutputData();
 
  virtual vtkXMLDataReader* CreatePieceReader()=0;
  virtual vtkIdType GetNumberOfPoints()=0;
  virtual vtkIdType GetNumberOfCells()=0;
  virtual void CopyArrayForPoints(vtkDataArray* inArray,
                                  vtkDataArray* outArray)=0;
  virtual void CopyArrayForCells(vtkDataArray* inArray,
                                 vtkDataArray* outArray)=0;
 
  virtual void SetupPieces(int numPieces);
  virtual void DestroyPieces();
  int ReadPiece(vtkXMLDataElement* ePiece, int index);
  virtual int ReadPiece(vtkXMLDataElement* ePiece);
  int ReadPieceData(int index);
  virtual int ReadPieceData();
  int CanReadPiece(int index);
 
  char* CreatePieceFileName(const char* fileName);
  void SplitFileName();
 
  // Callback registered with the PieceProgressObserver.
  static void PieceProgressCallbackFunction(vtkObject*, unsigned long, void*,
                                           void*);
  virtual void PieceProgressCallback();
 
  // Pieces from the input summary file.
  int NumberOfPieces;
 
  // The ghost level available on each input piece.
  int GhostLevel;
 
  // The piece currently being read.
  int Piece;
 
  // The path to the input file without the file name.
  char* PathName;
 
  // Information per-piece.
  vtkXMLDataElement** PieceElements;
  vtkXMLDataReader** PieceReaders;
  int* CanReadPieceFlag;
 
  // The PPointData and PCellData element representations.
  vtkXMLDataElement* PPointDataElement;
  vtkXMLDataElement* PCellDataElement;
 
  // The observer to report progress from reading serial data in each
  // piece.
  vtkCallbackCommand* PieceProgressObserver;
 
private:
  vtkXMLPDataReader(const vtkXMLPDataReader&);  // Not implemented.
  void operator=(const vtkXMLPDataReader&);  // Not implemented.
};
 
#endif