---

Filtering/vtkPerlinNoise.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkPerlinNoise.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 __vtkPerlinNoise_h
#define __vtkPerlinNoise_h

#include "vtkImplicitFunction.h"

class VTK_FILTERING_EXPORT vtkPerlinNoise : public vtkImplicitFunction
{
public:
  vtkTypeRevisionMacro(vtkPerlinNoise,vtkImplicitFunction);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkPerlinNoise *New();


  float EvaluateFunction(float x[3]);
  float EvaluateFunction(float x, float y, float z)
    {return this->vtkImplicitFunction::EvaluateFunction(x, y, z); } ;

  void EvaluateGradient(float x[3], float n[3]);


  vtkSetVector3Macro(Frequency,float);
  vtkGetVectorMacro(Frequency,float,3);


  vtkSetVector3Macro(Phase,float);
  vtkGetVectorMacro(Phase,float,3);


  vtkSetMacro(Amplitude,float);
  vtkGetMacro(Amplitude,float);

protected:
  vtkPerlinNoise();
  ~vtkPerlinNoise() {}

  float Frequency[3];
  float Phase[3];
  float Amplitude;

private:
  vtkPerlinNoise(const vtkPerlinNoise&); // Not implemented
  void operator=(const vtkPerlinNoise&); // Not implemented
};

#endif

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