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131 lines
4.1 KiB
C++
131 lines
4.1 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkXMLDataReader.h
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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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/**
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* @class vtkXMLDataReader
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* @brief Superclass for VTK XML file readers.
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*
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* vtkXMLDataReader provides functionality common to all file readers for
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* <a href="http://www.vtk.org/Wiki/VTK_XML_Formats">VTK XML formats</a>.
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* Concrete subclasses call upon this functionality when needed.
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*
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* @sa
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* vtkXMLPDataReader
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*/
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#ifndef vtkXMLDataReader_h
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#define vtkXMLDataReader_h
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#include "vtkIOXMLModule.h" // For export macro
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#include "vtkXMLReader.h"
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#include <memory> // for std::unique_ptr
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class VTKIOXML_EXPORT vtkXMLDataReader : public vtkXMLReader
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{
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public:
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vtkTypeMacro(vtkXMLDataReader, vtkXMLReader);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Get the number of points in the output.
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*/
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virtual vtkIdType GetNumberOfPoints() = 0;
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/**
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* Get the number of cells in the output.
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*/
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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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void CopyOutputInformation(vtkInformation* outInfo, int port) override;
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protected:
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vtkXMLDataReader();
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~vtkXMLDataReader() override;
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// Add functionality to methods from superclass.
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void CreateXMLParser() override;
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void DestroyXMLParser() override;
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void SetupOutputInformation(vtkInformation* outInfo) override;
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int ReadPrimaryElement(vtkXMLDataElement* ePrimary) override;
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void SetupOutputData() override;
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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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void ReadXMLData() override;
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// Read a data array whose tuples coorrespond to points or cells.
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virtual int ReadArrayForPoints(vtkXMLDataElement* da, vtkAbstractArray* outArray);
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virtual int ReadArrayForCells(vtkXMLDataElement* da, vtkAbstractArray* outArray);
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// Callback registered with the DataProgressObserver.
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static void DataProgressCallbackFunction(vtkObject*, unsigned long, void*, 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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// The observer to report progress from reading data from XMLParser.
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vtkCallbackCommand* DataProgressObserver;
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private:
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class MapStringToInt;
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class MapStringToInt64;
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// Specify the last time step read, useful to know if we need to rearead data
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// //PointData
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std::unique_ptr<MapStringToInt> PointDataTimeStep;
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std::unique_ptr<MapStringToInt64> PointDataOffset;
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int PointDataNeedToReadTimeStep(vtkXMLDataElement* eNested);
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// CellData
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std::unique_ptr<MapStringToInt> CellDataTimeStep;
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std::unique_ptr<MapStringToInt64> CellDataOffset;
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int CellDataNeedToReadTimeStep(vtkXMLDataElement* eNested);
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vtkXMLDataReader(const vtkXMLDataReader&) = delete;
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void operator=(const vtkXMLDataReader&) = delete;
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void ConvertGhostLevelsToGhostType(
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FieldType type, vtkAbstractArray* data, vtkIdType startIndex, vtkIdType numValues) override;
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};
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#endif
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