vtkXMLUnstructuredGridReader.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkXMLUnstructuredGridReader.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 vtkXMLUnstructuredGridReader_h
#define vtkXMLUnstructuredGridReader_h
 
#include "vtkIOXMLModule.h" // For export macro
#include "vtkXMLUnstructuredDataReader.h"
 
class vtkUnstructuredGrid;
class vtkIdTypeArray;
 
class VTKIOXML_EXPORT vtkXMLUnstructuredGridReader : public vtkXMLUnstructuredDataReader
{
public:
  vtkTypeMacro(vtkXMLUnstructuredGridReader,vtkXMLUnstructuredDataReader);
  void PrintSelf(ostream& os, vtkIndent indent);
  static vtkXMLUnstructuredGridReader *New();
 
 
  vtkUnstructuredGrid *GetOutput();
  vtkUnstructuredGrid *GetOutput(int idx);
 
protected:
  vtkXMLUnstructuredGridReader();
  ~vtkXMLUnstructuredGridReader();
 
  const char* GetDataSetName();
  void GetOutputUpdateExtent(int& piece, int& numberOfPieces, int& ghostLevel);
  void SetupOutputTotals();
  void SetupPieces(int numPieces);
  void DestroyPieces();
 
  void SetupOutputData();
  int ReadPiece(vtkXMLDataElement* ePiece);
  void SetupNextPiece();
  int ReadPieceData();
 
  // Read a data array whose tuples correspond to cells.
  virtual int ReadArrayForCells(vtkXMLDataElement* da,
    vtkAbstractArray* outArray);
 
  // Get the number of cells in the given piece.  Valid after
  // UpdateInformation.
  virtual vtkIdType GetNumberOfCellsInPiece(int piece);
 
  virtual int FillOutputPortInformation(int, vtkInformation*);
 
  // The index of the cell in the output where the current piece
  // begins.
  vtkIdType StartCell;
 
  // The Cells element for each piece.
  vtkXMLDataElement** CellElements;
  vtkIdType* NumberOfCells;
 
  int CellsTimeStep;
  unsigned long CellsOffset;
 
private:
  vtkXMLUnstructuredGridReader(const vtkXMLUnstructuredGridReader&);  // Not implemented.
  void operator=(const vtkXMLUnstructuredGridReader&);  // Not implemented.
};
 
#endif