text: /*=========================================================================
  
    Program:   Visualization Toolkit
    Module:    vtkImageLogarithmicScale.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.
  
  =========================================================================*/
  /**
   * @class   vtkImageLogarithmicScale
   * @brief   Passes each pixel through log function.
   *
   * vtkImageLogarithmicScale passes each pixel through the function
   * c*log(1+x).  It also handles negative values with the function
   * -c*log(1-x).
   */
  
  #ifndef vtkImageLogarithmicScale_h
  #define vtkImageLogarithmicScale_h
  
  #include "vtkImagingMathModule.h" // For export macro
  #include "vtkThreadedImageAlgorithm.h"
  
  class VTKIMAGINGMATH_EXPORT vtkImageLogarithmicScale : public vtkThreadedImageAlgorithm
  {
  public:
    static vtkImageLogarithmicScale* New();
    vtkTypeMacro(vtkImageLogarithmicScale, vtkThreadedImageAlgorithm);
    void PrintSelf(ostream& os, vtkIndent indent) override;
  
    //@{
    /**
     * Set/Get the scale factor for the logarithmic function.
     */
    vtkSetMacro(Constant, double);
    vtkGetMacro(Constant, double);
    //@}
  
  protected:
    vtkImageLogarithmicScale();
    ~vtkImageLogarithmicScale() override {}
  
    double Constant;
  
    void ThreadedExecute(vtkImageData* inData, vtkImageData* outData, int outExt[6], int id) override;
  
  private:
    vtkImageLogarithmicScale(const vtkImageLogarithmicScale&) = delete;
    void operator=(const vtkImageLogarithmicScale&) = delete;
  };
  
  #endif
  