Rendering/vtkDirectionEncoder.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkDirectionEncoder.h,v $
  Language:  C++

  Copyright (c) 1993-2002 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 __vtkDirectionEncoder_h
#define __vtkDirectionEncoder_h

#include "vtkObject.h"

class VTK_RENDERING_EXPORT vtkDirectionEncoder : public vtkObject
{
public:

  vtkTypeRevisionMacro(vtkDirectionEncoder,vtkObject);
  virtual void PrintSelf(ostream& os, vtkIndent indent);

  virtual int GetEncodedDirection( float n[3] )=0;

  virtual float *GetDecodedGradient( int value )=0;

  virtual  int GetNumberOfEncodedDirections( void )=0;

  virtual float *GetDecodedGradientTable( void )=0;

protected:
  vtkDirectionEncoder() {};
  ~vtkDirectionEncoder() {};
private:
  vtkDirectionEncoder(const vtkDirectionEncoder&);  // Not implemented.
  void operator=(const vtkDirectionEncoder&);  // Not implemented.
}; 


#endif

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