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127 lines
4.1 KiB
127 lines
4.1 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkXMLDataReader.h,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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// .NAME vtkXMLDataReader - Superclass for VTK XML file readers.
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// .SECTION Description
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// vtkXMLDataReader provides functionality common to all VTK XML file
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// readers. Concrete subclasses call upon this functionality when
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// needed.
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// .SECTION See Also
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// vtkXMLPDataReader
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#ifndef __vtkXMLDataReader_h
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#define __vtkXMLDataReader_h
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#include "vtkXMLReader.h"
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class VTK_IO_EXPORT vtkXMLDataReader : public vtkXMLReader
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{
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public:
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vtkTypeRevisionMacro(vtkXMLDataReader,vtkXMLReader);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Get the number of points in the output.
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virtual vtkIdType GetNumberOfPoints()=0;
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// Description:
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// Get the number of cells in the output.
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virtual vtkIdType GetNumberOfCells()=0;
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// For the specified port, copy the information this reader sets up in
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// SetupOutputInformation to outInfo
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virtual void CopyOutputInformation(vtkInformation *outInfo, int port);
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protected:
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vtkXMLDataReader();
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~vtkXMLDataReader();
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// Add functionality to methods from superclass.
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virtual void CreateXMLParser();
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virtual void DestroyXMLParser();
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virtual void SetupOutputInformation(vtkInformation *outInfo);
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int ReadPrimaryElement(vtkXMLDataElement* ePrimary);
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void SetupOutputData();
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// Setup the reader for a given number of pieces.
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virtual void SetupPieces(int numPieces);
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virtual void DestroyPieces();
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// Read information from the file for the given piece.
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int ReadPiece(vtkXMLDataElement* ePiece, int piece);
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virtual int ReadPiece(vtkXMLDataElement* ePiece);
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// Read data from the file for the given piece.
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int ReadPieceData(int piece);
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virtual int ReadPieceData();
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virtual void ReadXMLData();
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// Read a data array whose tuples coorrespond to points or cells.
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virtual int ReadArrayForPoints(vtkXMLDataElement* da,
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vtkDataArray* outArray);
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virtual int ReadArrayForCells(vtkXMLDataElement* da,
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vtkDataArray* outArray);
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// Read data from a given element.
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int ReadData(vtkXMLDataElement* da, void* data, int wordType,
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vtkIdType startWord, vtkIdType numWords);
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// Callback registered with the DataProgressObserver.
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static void DataProgressCallbackFunction(vtkObject*, unsigned long, void*,
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void*);
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// Progress callback from XMLParser.
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virtual void DataProgressCallback();
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// The number of Pieces of data found in the file.
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int NumberOfPieces;
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// The PointData and CellData element representations for each piece.
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vtkXMLDataElement** PointDataElements;
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vtkXMLDataElement** CellDataElements;
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// The piece currently being read.
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int Piece;
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// The number of point/cell data arrays in the output. Valid after
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// SetupOutputData has been called.
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int NumberOfPointArrays;
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int NumberOfCellArrays;
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// Flag for whether DataProgressCallback should actually update
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// progress.
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int InReadData;
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// The observer to report progress from reading data from XMLParser.
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vtkCallbackCommand* DataProgressObserver;
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// Specify the last time step read, usefull to know if we need to rearead data
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// //PointData
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int *PointDataTimeStep;
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unsigned long *PointDataOffset;
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int PointDataNeedToReadTimeStep(vtkXMLDataElement *eNested);
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//CellData
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int *CellDataTimeStep;
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unsigned long *CellDataOffset;
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int CellDataNeedToReadTimeStep(vtkXMLDataElement *eNested);
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private:
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vtkXMLDataReader(const vtkXMLDataReader&); // Not implemented.
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void operator=(const vtkXMLDataReader&); // Not implemented.
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};
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#endif
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