RenewIfNoImprovment.cs

using GeneticAlgorithm.Exceptions;
using GeneticAlgorithm.Interfaces;
using GeneticAlgorithm.StopManagers;

namespace GeneticAlgorithm.PopulationRenwalManagers
{
    /// <summary>
    /// Will renew "precentageToRenew" of the population when there isn't an improvement of at least "minImprovment" after "generationsToConsider" generations.
    /// </summary>
    public class RenewIfNoImprovment : IPopulationRenwalManager
    {
        private readonly double precentageToRenew;
        private readonly IStopManager stopManager;

        /// <summary>
        /// Will renew "precentageToRenew" of the population when there isn't an improvement of at least "minImprovment" after "generationsToConsider" generations.
        /// </summary>
        public RenewIfNoImprovment(int generationsToConsider, double minImprvment,  double precentageToRenew)
        {
            precentageToRenew.VerifyPrecentageToRenew();

            this.precentageToRenew = precentageToRenew;
            stopManager = new StopIfNoImprovment(generationsToConsider, minImprvment);
        }

        public double ShouldRenew(Population population, IEnvironment environment, int generation) =>
            stopManager.ShouldStop(population, environment, generation) ? precentageToRenew : 0;

        public void AddGeneration(Population population)
        {
            stopManager.AddGeneration(population);
        }
    }
}