fatmass_energy_budget.h

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// SPDX-FileCopyrightText: 2020 W. Traylor <wolfgang.traylor@senckenberg.de>
//
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#ifndef FAUNA_FATMASS_ENERGY_BUDGET_H
#define FAUNA_FATMASS_ENERGY_BUDGET_H
 
namespace Fauna {
 
 
class FatmassEnergyBudget {
 public:
 
  FatmassEnergyBudget(const double initial_fatmass,
                      const double maximum_fatmass,
                      const double anabolism_coefficient,
                      const double catabolism_coefficient);
 
 
  void add_energy_needs(const double energy);
 
  void catabolize_fat();
 
 
  void force_body_condition(const double body_condition);
 
  double get_energy_needs() const { return energy_needs; }
 
  double get_fatmass() const { return fatmass; }
 
  double get_max_anabolism_per_day() const;
 
  double get_max_fatmass() const { return max_fatmass; }
 
 
  void merge(const FatmassEnergyBudget& other, const double this_weight,
             const double other_weight);
 
 
  void metabolize_energy(double energy);
 
 
  void set_max_fatmass(const double max_fatmass, const double max_gain);
 
 private:
  double anabolism_coefficient;   // MJ/kg
  double catabolism_coefficient;  // MJ/kg
  double energy_needs = 0.0;      // MJ/ind
  double fatmass;                 // kg/ind
  double max_fatmass;             // kg/ind
  double max_fatmass_gain = 0.0;  // kg/ind/day
};
}  // namespace Fauna
#endif  // FAUNA_FATMASS_ENERGY_BUDGET_H