vtkXMLPUnstructuredDataReader.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkXMLPUnstructuredDataReader.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 vtkXMLPUnstructuredDataReader_h
#define vtkXMLPUnstructuredDataReader_h
 
#include "vtkIOXMLModule.h" // For export macro
#include "vtkXMLPDataReader.h"
 
class vtkPointSet;
class vtkCellArray;
class vtkXMLUnstructuredDataReader;
 
class VTKIOXML_EXPORT vtkXMLPUnstructuredDataReader : public vtkXMLPDataReader
{
public:
  vtkTypeMacro(vtkXMLPUnstructuredDataReader,vtkXMLPDataReader);
  void PrintSelf(ostream& os, vtkIndent indent);
 
  // For the specified port, copy the information this reader sets up in
  // SetupOutputInformation to outInfo
  virtual void CopyOutputInformation(vtkInformation *outInfo, int port);
 
protected:
  vtkXMLPUnstructuredDataReader();
  ~vtkXMLPUnstructuredDataReader();
 
  virtual int RequestInformation(vtkInformation *request,
                                 vtkInformationVector **inputVector,
                                 vtkInformationVector *outputVector);
 
 
  vtkPointSet* GetOutputAsPointSet();
  vtkPointSet* GetPieceInputAsPointSet(int piece);
  virtual void SetupOutputTotals();
  virtual void SetupNextPiece();
  vtkIdType GetNumberOfPoints();
  vtkIdType GetNumberOfCells();
  void CopyArrayForPoints(vtkDataArray* inArray, vtkDataArray* outArray);
 
  void SetupEmptyOutput();
 
  // Setup the output's information.
  void SetupOutputInformation(vtkInformation *outInfo);
 
  void SetupOutputData();
  virtual void GetOutputUpdateExtent(int& piece, int& numberOfPieces,
                                     int& ghostLevel)=0;
 
  // Pipeline execute data driver.  Called by vtkXMLReader.
  void ReadXMLData();
  int ReadPrimaryElement(vtkXMLDataElement* ePrimary);
  void SetupUpdateExtent(int piece, int numberOfPieces, int ghostLevel);
 
  int ReadPieceData();
  void CopyCellArray(vtkIdType totalNumberOfCells, vtkCellArray* inCells,
                     vtkCellArray* outCells);
 
  // Get the number of points/cells in the given piece.  Valid after
  // UpdateInformation.
  virtual vtkIdType GetNumberOfPointsInPiece(int piece);
  virtual vtkIdType GetNumberOfCellsInPiece(int piece);
 
  // The update request.
  int UpdatePiece;
  int UpdateNumberOfPieces;
  int UpdateGhostLevel;
 
  // The range of pieces from the file that will form the UpdatePiece.
  int StartPiece;
  int EndPiece;
  vtkIdType TotalNumberOfPoints;
  vtkIdType TotalNumberOfCells;
  vtkIdType StartPoint;
 
  // The PPoints element with point information.
  vtkXMLDataElement* PPointsElement;
 
private:
  vtkXMLPUnstructuredDataReader(const vtkXMLPUnstructuredDataReader&);  // Not implemented.
  void operator=(const vtkXMLPUnstructuredDataReader&);  // Not implemented.
};
 
#endif