vtkSphericalDirectionEncoder.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkSphericalDirectionEncoder.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
#ifndef vtkSphericalDirectionEncoder_h
#define vtkSphericalDirectionEncoder_h
 
#include "vtkRenderingVolumeModule.h" // For export macro
#include "vtkDirectionEncoder.h"
 
class VTKRENDERINGVOLUME_EXPORT vtkSphericalDirectionEncoder : public vtkDirectionEncoder
{
public:
  vtkTypeMacro(vtkSphericalDirectionEncoder,vtkDirectionEncoder);
  void PrintSelf( ostream& os, vtkIndent indent );
 
  static vtkSphericalDirectionEncoder *New();
 
 
  int GetEncodedDirection( float n[3] );
 
  float *GetDecodedGradient( int value );
 
  int GetNumberOfEncodedDirections( void ) { return 65536; }
 
 
  float *GetDecodedGradientTable( void )
    {
      return &(this->DecodedGradientTable[0]);
    }
 
 
protected:
  vtkSphericalDirectionEncoder();
  ~vtkSphericalDirectionEncoder();
 
  static float DecodedGradientTable[65536*3];
 
 
  static void InitializeDecodedGradientTable();
  static int DecodedGradientTableInitialized;
 
private:
  vtkSphericalDirectionEncoder(const vtkSphericalDirectionEncoder&);  // Not implemented.
  void operator=(const vtkSphericalDirectionEncoder&);  // Not implemented.
};
 
 
#endif