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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkXMLDataReader.h,v $
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 vtkXMLDataReader - Superclass for VTK XML file readers.
// .SECTION Description
// vtkXMLDataReader provides functionality common to all VTK XML file
// readers. Concrete subclasses call upon this functionality when
// needed.
// .SECTION See Also
// vtkXMLPDataReader
#ifndef __vtkXMLDataReader_h
#define __vtkXMLDataReader_h
#include "vtkXMLReader.h"
class VTK_IO_EXPORT vtkXMLDataReader : public vtkXMLReader
{
public:
vtkTypeRevisionMacro(vtkXMLDataReader,vtkXMLReader);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Get the number of points in the output.
virtual vtkIdType GetNumberOfPoints()=0;
// Description:
// Get the number of cells in the output.
virtual vtkIdType GetNumberOfCells()=0;
// For the specified port, copy the information this reader sets up in
// SetupOutputInformation to outInfo
virtual void CopyOutputInformation(vtkInformation *outInfo, int port);
protected:
vtkXMLDataReader();
~vtkXMLDataReader();
// Add functionality to methods from superclass.
virtual void CreateXMLParser();
virtual void DestroyXMLParser();
virtual void SetupOutputInformation(vtkInformation *outInfo);
int ReadPrimaryElement(vtkXMLDataElement* ePrimary);
void SetupOutputData();
// Setup the reader for a given number of pieces.
virtual void SetupPieces(int numPieces);
virtual void DestroyPieces();
// Read information from the file for the given piece.
int ReadPiece(vtkXMLDataElement* ePiece, int piece);
virtual int ReadPiece(vtkXMLDataElement* ePiece);
// Read data from the file for the given piece.
int ReadPieceData(int piece);
virtual int ReadPieceData();
virtual void ReadXMLData();
// Read a data array whose tuples coorrespond to points or cells.
virtual int ReadArrayForPoints(vtkXMLDataElement* da,
vtkDataArray* outArray);
virtual int ReadArrayForCells(vtkXMLDataElement* da,
vtkDataArray* outArray);
// Read data from a given element.
int ReadData(vtkXMLDataElement* da, void* data, int wordType,
vtkIdType startWord, vtkIdType numWords);
// Callback registered with the DataProgressObserver.
static void DataProgressCallbackFunction(vtkObject*, unsigned long, void*,
void*);
// Progress callback from XMLParser.
virtual void DataProgressCallback();
// The number of Pieces of data found in the file.
int NumberOfPieces;
// The PointData and CellData element representations for each piece.
vtkXMLDataElement** PointDataElements;
vtkXMLDataElement** CellDataElements;
// The piece currently being read.
int Piece;
// The number of point/cell data arrays in the output. Valid after
// SetupOutputData has been called.
int NumberOfPointArrays;
int NumberOfCellArrays;
// Flag for whether DataProgressCallback should actually update
// progress.
int InReadData;
// The observer to report progress from reading data from XMLParser.
vtkCallbackCommand* DataProgressObserver;
// Specify the last time step read, usefull to know if we need to rearead data
// //PointData
int *PointDataTimeStep;
unsigned long *PointDataOffset;
int PointDataNeedToReadTimeStep(vtkXMLDataElement *eNested);
//CellData
int *CellDataTimeStep;
unsigned long *CellDataOffset;
int CellDataNeedToReadTimeStep(vtkXMLDataElement *eNested);
private:
vtkXMLDataReader(const vtkXMLDataReader&); // Not implemented.
void operator=(const vtkXMLDataReader&); // Not implemented.
};
#endif
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