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Parallel/vtkImageBlockReader.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkImageBlockReader.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 =========================================================================*/
00029 #ifndef __vtkImageBlockReader_h
00030 #define __vtkImageBlockReader_h
00031 
00032 #include "vtkImageSource.h"
00033 
00034 
00035 class VTK_PARALLEL_EXPORT vtkImageBlockReader : public vtkImageSource
00036 {
00037 public:
00038   static vtkImageBlockReader *New();
00039   vtkTypeRevisionMacro(vtkImageBlockReader,vtkImageSource);
00040   void PrintSelf(ostream& os, vtkIndent indent);
00041 
00043 
00045   vtkSetVector3Macro(Divisions, int);
00046   vtkGetVector3Macro(Divisions, int);
00048 
00050 
00052   vtkSetMacro(Overlap, int);
00053   vtkGetMacro(Overlap, int);
00055 
00057 
00059   vtkSetVector6Macro(WholeExtent, int);
00060   vtkGetVector6Macro(WholeExtent, int);
00062 
00064 
00066   vtkSetMacro(NumberOfScalarComponents, int);  
00067   vtkGetMacro(NumberOfScalarComponents, int);  
00069   
00071 
00073   vtkSetMacro(ScalarType, int);  
00074   vtkGetMacro(ScalarType, int);  
00076   
00078 
00079   vtkSetStringMacro(FilePattern);
00080   vtkGetStringMacro(FilePattern);
00082 
00083 
00084   
00085 protected:
00086   vtkImageBlockReader();
00087   ~vtkImageBlockReader();
00088   
00089   char *FilePattern;
00090 
00091   int WholeExtent[6];
00092   int NumberOfScalarComponents;
00093   int ScalarType;
00094   int Divisions[3];
00095   int Overlap;
00096 
00097 
00099 
00100   void Execute(vtkImageData *data);
00101   void ExecuteInformation();
00103 
00104   // This method computes the XYZExtents.
00105   void ComputeBlockExtents();
00106   void DeleteBlockExtents();
00107 
00108   // helper methods
00109   void Read(vtkImageData *data, int *ext);
00110   void ReadRemainder(vtkImageData *data, int *ext, int *doneExt);
00111   void ReadBlock(int xIdx, int yIdx, int zIdx, 
00112                  vtkImageData *data, int *ext);
00113 
00116   void ModifyOutputUpdateExtent();
00117 
00118   // extents (min, max) of the divisions.
00119   int *XExtents;
00120   int *YExtents;
00121   int *ZExtents;
00122 private:
00123   vtkImageBlockReader(const vtkImageBlockReader&);  // Not implemented.
00124   void operator=(const vtkImageBlockReader&);  // Not implemented.
00125 };
00126 
00127 
00128 #endif
00129 
00130