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function_library.h

Aller à la documentation de ce fichier.

/*
  PDElib "PDE filters for black and white images"
  Copyright (C) 2001 Sylvain Paris
  
  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version 2
  of the License, or (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

  Author : Sylvain Paris
           sp.gpl@netcourrier.com
           8, rue des acacias
           77 360 Vaires
           FRANCE
*/

#ifndef __FUNCTION_LIBRARY__
#define __FUNCTION_LIBRARY__

#include <function.h>


/*
  #######################
  # class Ramp_function #
  #######################
 */



class Ramp_function
  :public unary_function<float,float>{

private:
  float lower_bound;
  float higher_bound;
  float inv_delta;
  float low_value;
  float high_value;
  
public:
  Ramp_function(const float low,
                const float high,
                const float low_val,
                const float high_val);
  
  inline float operator()(const float x) const;
};


/*
  ############################# 
  # class Inv_square_function #
  #############################
 */


class Inv_square_function
  :public unary_function<float,float>{

private:
  float alpha;
  
public:
  Inv_square_function(const float cut = 1);
  
  inline float operator()(const float x) const;
};


#include "function_library.cc"

#endif

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