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/*=========================================================================
Program: Visualization Toolkit
Module: vtkXMLDataReader.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.
=========================================================================*/
/**
* @class vtkXMLDataReader
* @brief Superclass for VTK XML file readers.
*
* vtkXMLDataReader provides functionality common to all file readers for
* <a href="http://www.vtk.org/Wiki/VTK_XML_Formats">VTK XML formats</a>.
* Concrete subclasses call upon this functionality when needed.
*
* @sa
* vtkXMLPDataReader
*/
#ifndef vtkXMLDataReader_h
#define vtkXMLDataReader_h
#include "vtkIOXMLModule.h" // For export macro
#include "vtkXMLReader.h"
class VTKIOXML_EXPORT vtkXMLDataReader : public vtkXMLReader
{
public:
vtkTypeMacro(vtkXMLDataReader,vtkXMLReader);
void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
/**
* Get the number of points in the output.
*/
virtual vtkIdType GetNumberOfPoints()=0;
/**
* 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
void CopyOutputInformation(vtkInformation *outInfo, int port) VTK_OVERRIDE;
protected:
vtkXMLDataReader();
~vtkXMLDataReader() VTK_OVERRIDE;
// Add functionality to methods from superclass.
void CreateXMLParser() VTK_OVERRIDE;
void DestroyXMLParser() VTK_OVERRIDE;
void SetupOutputInformation(vtkInformation *outInfo) VTK_OVERRIDE;
int ReadPrimaryElement(vtkXMLDataElement* ePrimary) VTK_OVERRIDE;
void SetupOutputData() VTK_OVERRIDE;
// 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();
void ReadXMLData() VTK_OVERRIDE;
// Read a data array whose tuples coorrespond to points or cells.
virtual int ReadArrayForPoints(vtkXMLDataElement* da,
vtkAbstractArray* outArray);
virtual int ReadArrayForCells(vtkXMLDataElement* da,
vtkAbstractArray* outArray);
// 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;
// The observer to report progress from reading data from XMLParser.
vtkCallbackCommand* DataProgressObserver;
// Specify the last time step read, useful to know if we need to rearead data
// //PointData
int *PointDataTimeStep;
vtkTypeInt64 *PointDataOffset;
int PointDataNeedToReadTimeStep(vtkXMLDataElement *eNested);
//CellData
int *CellDataTimeStep;
vtkTypeInt64 *CellDataOffset;
int CellDataNeedToReadTimeStep(vtkXMLDataElement *eNested);
private:
vtkXMLDataReader(const vtkXMLDataReader&) VTK_DELETE_FUNCTION;
void operator=(const vtkXMLDataReader&) VTK_DELETE_FUNCTION;
void ConvertGhostLevelsToGhostType(
FieldType type, vtkAbstractArray* data, vtkIdType startIndex,
vtkIdType numValues) VTK_OVERRIDE;
};
#endif
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