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vtkSphericalDirectionEncoder.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkSphericalDirectionEncoder.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 =========================================================================*/
00025 #ifndef __vtkSphericalDirectionEncoder_h
00026 #define __vtkSphericalDirectionEncoder_h
00027 
00028 #include "vtkDirectionEncoder.h"
00029 
00030 class VTK_VOLUMERENDERING_EXPORT vtkSphericalDirectionEncoder : public vtkDirectionEncoder
00031 {
00032 public:
00033   vtkTypeRevisionMacro(vtkSphericalDirectionEncoder,vtkDirectionEncoder);
00034   void PrintSelf( ostream& os, vtkIndent indent );
00035 
00038   static vtkSphericalDirectionEncoder *New();
00039 
00040 
00042   int GetEncodedDirection( float n[3] );
00043   
00045   float *GetDecodedGradient( int value );
00046 
00048   int GetNumberOfEncodedDirections( void ) { return 65536; }
00049 
00051 
00055   float *GetDecodedGradientTable( void ) 
00056     {
00057       return &(this->DecodedGradientTable[0]);
00058     }
00060   
00061   
00062 protected:
00063   vtkSphericalDirectionEncoder();
00064   ~vtkSphericalDirectionEncoder();
00065 
00066   static float DecodedGradientTable[65536*3];
00067 
00069 
00070   static void InitializeDecodedGradientTable();
00071   static int DecodedGradientTableInitialized;
00073   
00074 private:
00075   vtkSphericalDirectionEncoder(const vtkSphericalDirectionEncoder&);  // Not implemented.
00076   void operator=(const vtkSphericalDirectionEncoder&);  // Not implemented.
00077 }; 
00078 
00079 
00080 #endif
00081 
00082 

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