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IO/vtkXMLPStructuredDataReader.h

00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkXMLPStructuredDataReader.h,v $
00005 
00006   Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
00007   All rights reserved.
00008   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00009 
00010      This software is distributed WITHOUT ANY WARRANTY; without even
00011      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00012      PURPOSE.  See the above copyright notice for more information.
00013 
00014 =========================================================================*/
00026 #ifndef __vtkXMLPStructuredDataReader_h
00027 #define __vtkXMLPStructuredDataReader_h
00028 
00029 #include "vtkXMLPDataReader.h"
00030 
00031 class vtkExtentSplitter;
00032 class vtkExtentTranslator;
00033 class vtkTableExtentTranslator;
00034 class vtkXMLStructuredDataReader;
00035 
00036 class VTK_IO_EXPORT vtkXMLPStructuredDataReader : public vtkXMLPDataReader
00037 {
00038 public:
00039   vtkTypeRevisionMacro(vtkXMLPStructuredDataReader,vtkXMLPDataReader);
00040   void PrintSelf(ostream& os, vtkIndent indent);
00041   
00046   virtual vtkExtentTranslator* GetExtentTranslator();
00047   
00048 protected:
00049   vtkXMLPStructuredDataReader();
00050   ~vtkXMLPStructuredDataReader();
00051   
00052   vtkIdType GetNumberOfPoints();
00053   vtkIdType GetNumberOfCells();
00054   void CopyArrayForPoints(vtkDataArray* inArray, vtkDataArray* outArray);
00055   void CopyArrayForCells(vtkDataArray* inArray, vtkDataArray* outArray);
00056   
00057   virtual void SetOutputExtent(int* extent)=0;
00058   virtual void GetPieceInputExtent(int index, int* extent)=0;
00059   
00060   // Pipeline execute data driver.  Called by vtkXMLReader.
00061   void ReadXMLData();
00062   int ReadPrimaryElement(vtkXMLDataElement* ePrimary);
00063   
00064   void SetupOutputInformation();
00065   void SetupEmptyOutput();
00066   void SetupPieces(int numPieces);
00067   void DestroyPieces();
00068   int ReadPiece(vtkXMLDataElement* ePiece);
00069   int ReadPieceData();
00070   void CopySubExtent(int* inExtent, int* inDimensions, int* inIncrements,
00071                      int* outExtent, int* outDimensions, int* outIncrements,
00072                      int* subExtent, int* subDimensions,
00073                      vtkDataArray* inArray, vtkDataArray* outArray);
00074   int ComputePieceSubExtents();
00075   
00076   vtkTableExtentTranslator* ExtentTranslator;
00077   vtkExtentSplitter* ExtentSplitter;
00078   
00079   // The extent to be updated in the output.
00080   int UpdateExtent[6];
00081   int PointDimensions[3];
00082   int PointIncrements[3];
00083   int CellDimensions[3];
00084   int CellIncrements[3];
00085   
00086   // The extent currently being read from a piece.
00087   int SubExtent[6];
00088   int SubPointDimensions[3];
00089   int SubCellDimensions[3];
00090   int SubPieceExtent[6];
00091   int SubPiecePointDimensions[3];
00092   int SubPiecePointIncrements[3];
00093   int SubPieceCellDimensions[3];
00094   int SubPieceCellIncrements[3];
00095   
00096   // Information per-piece.
00097   int* PieceExtents;
00098   
00099 private:
00100   vtkXMLPStructuredDataReader(const vtkXMLPStructuredDataReader&);  // Not implemented.
00101   void operator=(const vtkXMLPStructuredDataReader&);  // Not implemented.
00102 };
00103 
00104 #endif