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128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkXMLStructuredDataReader.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 vtkXMLStructuredDataReader
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* @brief Superclass for structured data XML readers.
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*
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* vtkXMLStructuredDataReader provides functionality common to all
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* structured data format readers.
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*
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* @sa
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* vtkXMLImageDataReader vtkXMLStructuredGridReader
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* vtkXMLRectilinearGridReader
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*/
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#ifndef vtkXMLStructuredDataReader_h
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#define vtkXMLStructuredDataReader_h
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#include "vtkIOXMLModule.h" // For export macro
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#include "vtkXMLDataReader.h"
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class VTKIOXML_EXPORT vtkXMLStructuredDataReader : public vtkXMLDataReader
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{
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public:
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vtkTypeMacro(vtkXMLStructuredDataReader,vtkXMLDataReader);
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void PrintSelf(ostream& os, vtkIndent indent);
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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();
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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();
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//@{
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/**
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* Get/Set whether the reader gets a whole slice from disk when only
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* a rectangle inside it is needed. This mode reads more data than
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* necessary, but prevents many short reads from interacting poorly
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* with the compression and encoding schemes.
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*/
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vtkSetMacro(WholeSlices, int);
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vtkGetMacro(WholeSlices, int);
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vtkBooleanMacro(WholeSlices, int);
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//@}
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/**
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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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*/
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virtual void CopyOutputInformation(vtkInformation *outInfo, int port);
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protected:
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vtkXMLStructuredDataReader();
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~vtkXMLStructuredDataReader();
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virtual void SetOutputExtent(int* extent)=0;
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int ReadPrimaryElement(vtkXMLDataElement* ePrimary);
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// Pipeline execute data driver. Called by vtkXMLReader.
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void ReadXMLData();
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void SetupOutputInformation(vtkInformation *outInfo);
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// Internal representation of pieces in the file that may have come
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// from a streamed write.
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int* PieceExtents;
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int* PiecePointDimensions;
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vtkIdType* PiecePointIncrements;
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int* PieceCellDimensions;
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vtkIdType* PieceCellIncrements;
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// Whether to read in whole slices mode.
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int WholeSlices;
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// The update extent and corresponding increments and dimensions.
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int UpdateExtent[6];
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int PointDimensions[3];
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int CellDimensions[3];
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vtkIdType PointIncrements[3];
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vtkIdType CellIncrements[3];
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int WholeExtent[6];
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// The extent currently being read.
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int SubExtent[6];
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int SubPointDimensions[3];
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int SubCellDimensions[3];
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// Override methods from superclass.
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void SetupEmptyOutput();
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void SetupPieces(int numPieces);
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void DestroyPieces();
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virtual int ReadArrayForPoints(vtkXMLDataElement* da,
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vtkAbstractArray* outArray);
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virtual int ReadArrayForCells(vtkXMLDataElement* da,
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vtkAbstractArray* outArray);
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// Internal utility methods.
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int ReadPiece(vtkXMLDataElement* ePiece);
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virtual int ReadSubExtent(
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int* inExtent, int* inDimensions, vtkIdType* inIncrements,
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int* outExtent,int* outDimensions,vtkIdType* outIncrements,
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int* subExtent, int* subDimensions, vtkXMLDataElement* da,
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vtkAbstractArray* array, FieldType type);
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private:
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vtkXMLStructuredDataReader(const vtkXMLStructuredDataReader&) VTK_DELETE_FUNCTION;
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void operator=(const vtkXMLStructuredDataReader&) VTK_DELETE_FUNCTION;
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};
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#endif
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