growth_curve.h

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/*
 *  growth_curve.h
 *
 *  This file is part of NEST.
 *
 *  Copyright (C) 2004 The NEST Initiative
 *
 *  NEST 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.
 *
 *  NEST 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 NEST.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
 
#ifndef GROWTH_CURVE_H
#define GROWTH_CURVE_H
 
// Includes from nestkernel:
#include "exceptions.h"
#include "nest_types.h"
 
// Includes from libnestutil:
#include "dictionary.h"
 
namespace nest
{
 
class GrowthCurve
{
public:
  virtual ~GrowthCurve()
  {
  }
  virtual void get( Dictionary& d ) const = 0;
  virtual void set( const Dictionary& d ) = 0;
  virtual double
  update( double t, double t_minus, double Ca_minus, double z, double tau_Ca, double growth_rate ) const = 0;
  virtual bool
  is( std::string n )
  {
    return n == name_;
  }
  std::string
  get_name()
  {
    return name_;
  }
 
protected:
  GrowthCurve( const std::string name )
    : name_( name )
  {
  }
  const std::string name_;
};
 
class GrowthCurveLinear : public GrowthCurve
{
public:
  GrowthCurveLinear();
  void get( Dictionary& d ) const override;
  void set( const Dictionary& d ) override;
 
  double
  update( double t, double t_minus, double Ca_minus, double z, double tau_Ca, double growth_rate ) const override;
 
private:
  double eps_;
};
 
class GrowthCurveGaussian : public GrowthCurve
{
public:
  GrowthCurveGaussian();
  void get( Dictionary& d ) const override;
  void set( const Dictionary& d ) override;
 
  double
  update( double t, double t_minus, double Ca_minus, double z, double tau_Ca, double growth_rate ) const override;
 
private:
  void compute_local_();
 
  double eta_;
  double eps_;
  double inv_zeta_;
  double xi_;
};
 
class GrowthCurveSigmoid : public GrowthCurve
{
public:
  GrowthCurveSigmoid();
  void get( Dictionary& d ) const override;
  void set( const Dictionary& d ) override;
 
  double
  update( double t, double t_minus, double Ca_minus, double z, double tau_Ca, double growth_rate ) const override;
 
private:
  double eps_;
  double psi_;
};
 
}  // of namespace
 
#endif