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IO/vtkXMLStructuredDataReader.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkXMLStructuredDataReader.h,v $
00005   Language:  C++
00006 
00007   Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 
00008   All rights reserved.
00009   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00010 
00011      This software is distributed WITHOUT ANY WARRANTY; without even 
00012      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00013      PURPOSE.  See the above copyright notice for more information.
00014 
00015 =========================================================================*/
00040 #ifndef __vtkXMLStructuredDataReader_h
00041 #define __vtkXMLStructuredDataReader_h
00042 
00043 #include "vtkXMLDataReader.h"
00044 
00045 
00046 class VTK_IO_EXPORT vtkXMLStructuredDataReader : public vtkXMLDataReader
00047 {
00048 public:
00049   vtkTypeRevisionMacro(vtkXMLStructuredDataReader,vtkXMLDataReader);
00050   void PrintSelf(ostream& os, vtkIndent indent);  
00051   
00053   virtual vtkIdType GetNumberOfPoints();
00054   
00056   virtual vtkIdType GetNumberOfCells();
00057   
00059 
00063   vtkSetMacro(WholeSlices, int);
00064   vtkGetMacro(WholeSlices, int);
00065   vtkBooleanMacro(WholeSlices, int);
00067   
00068 protected:
00069   vtkXMLStructuredDataReader();
00070   ~vtkXMLStructuredDataReader();
00071   
00072   virtual void SetOutputExtent(int* extent)=0;
00073   int ReadPrimaryElement(vtkXMLDataElement* ePrimary);
00074   
00075   // Pipeline execute data driver.  Called by vtkXMLReader.
00076   void ReadXMLData();
00077   
00078   // Internal representation of pieces in the file that may have come
00079   // from a streamed write.
00080   int* PieceExtents;
00081   int* PiecePointDimensions;
00082   int* PiecePointIncrements;
00083   int* PieceCellDimensions;
00084   int* PieceCellIncrements;
00085   
00086   // Whether to read in whole slices mode.
00087   int WholeSlices;
00088   
00089   // The update extent and corresponding increments and dimensions.
00090   int UpdateExtent[6];
00091   int PointDimensions[3];
00092   int CellDimensions[3];
00093   int PointIncrements[3];
00094   int CellIncrements[3];
00095   
00096   // The extent currently being read.
00097   int SubExtent[6];
00098   int SubPointDimensions[3];
00099   int SubCellDimensions[3];
00100   
00101   // Override methods from superclass.
00102   void SetupEmptyOutput();
00103   void SetupPieces(int numPieces);
00104   void DestroyPieces();
00105   int ReadArrayForPoints(vtkXMLDataElement* da, vtkDataArray* outArray);
00106   int ReadArrayForCells(vtkXMLDataElement* da, vtkDataArray* outArray);
00107   
00108   // Internal utility methods.
00109   int ReadPiece(vtkXMLDataElement* ePiece);
00110   int ReadSubExtent(int* inExtent, int* inDimensions, int* inIncrements,
00111                     int* outExtent, int* outDimensions, int* outIncrements,
00112                     int* subExtent, int* subDimensions, vtkXMLDataElement* da,
00113                     vtkDataArray* array);
00114   
00115 private:
00116   vtkXMLStructuredDataReader(const vtkXMLStructuredDataReader&);  // Not implemented.
00117   void operator=(const vtkXMLStructuredDataReader&);  // Not implemented.
00118 };
00119 
00120 #endif