VTK
dox/Filtering/vtkThreadedImageAlgorithm.h
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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    vtkThreadedImageAlgorithm.h
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 =========================================================================*/
00030 #ifndef __vtkThreadedImageAlgorithm_h
00031 #define __vtkThreadedImageAlgorithm_h
00032 
00033 #include "vtkImageAlgorithm.h"
00034 
00035 class vtkImageData;
00036 class vtkMultiThreader;
00037 
00038 class VTK_FILTERING_EXPORT vtkThreadedImageAlgorithm : public vtkImageAlgorithm
00039 {
00040 public:
00041   vtkTypeMacro(vtkThreadedImageAlgorithm,vtkImageAlgorithm);
00042   void PrintSelf(ostream& os, vtkIndent indent);
00043 
00045 
00049   virtual void ThreadedRequestData(vtkInformation *request, 
00050                                    vtkInformationVector **inputVector, 
00051                                    vtkInformationVector *outputVector,
00052                                    vtkImageData ***inData, 
00053                                    vtkImageData **outData,
00054                                    int extent[6], int threadId);
00056   
00057   // also support the old signature
00058   virtual void ThreadedExecute(vtkImageData *inData, 
00059                                vtkImageData *outData,
00060                                int extent[6], int threadId);
00061   
00063 
00064   vtkSetClampMacro( NumberOfThreads, int, 1, VTK_MAX_THREADS );
00065   vtkGetMacro( NumberOfThreads, int );
00067 
00069 
00070   virtual int SplitExtent(int splitExt[6], int startExt[6], 
00071                           int num, int total); 
00073 
00074 protected:
00075   vtkThreadedImageAlgorithm();
00076   ~vtkThreadedImageAlgorithm();
00077 
00078   vtkMultiThreader *Threader;
00079   int NumberOfThreads;
00080   
00082 
00084   virtual int RequestData(vtkInformation* request,
00085                           vtkInformationVector** inputVector,
00086                           vtkInformationVector* outputVector);
00088 
00089 private:
00090   vtkThreadedImageAlgorithm(const vtkThreadedImageAlgorithm&);  // Not implemented.
00091   void operator=(const vtkThreadedImageAlgorithm&);  // Not implemented.
00092 };
00093 
00094 #endif
00095 
00096 
00097 
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00101