/// <summary>
/// Mutate the specified individual.
/// Shifted line
/// </summary>
/// <param name="individual">The individual.</param>
/// <param name="mutation_probabilty">The probability to mutate each indiviudal.</param>
public override void Mutate(IIndividual individual, float mutation_probabilty)
{
var indexes = RandomizationRnd.GetInts(1, 0, individual.Length);
foreach (var index in indexes)
{
var oldGene = individual.GetGene(index);
// line endPoints shift
var shift1 = RandomizationRnd.GetInt(-shift, shift);
var shift2 = RandomizationRnd.GetInt(-shift, shift);
var shift3 = RandomizationRnd.GetInt(-shift, shift);
var shift4 = RandomizationRnd.GetInt(-shift, shift);
// gene
LineSegment2D line = (LineSegment2D)oldGene.Value;
// shifted gene
var p1 = new Point(line.P1.X + shift1, line.P1.Y + shift2);
var p2 = new Point(line.P2.X + shift3, line.P2.Y + shift4);
// sets new gene
individual.ReplaceGene(index, new Gene(new LineSegment2D(p1, p2)));
}
}
public override Gene GenerateGene()
{
var sX = RandomizationRnd.GetInt(0, Width);
var sY = RandomizationRnd.GetInt(0, Height);
var shifts = RandomizationRnd.GetInts(2, 0, 30);
// return new Gene(new ShapeLine(sX, sY, sX + shifts[0], sY + shifts[1]));
return(new Gene(new LineSegment2D(new Point(sX, sY), new Point(sX + shifts[0], sY + shifts[1]))));
}
/// <summary>
/// Cross the specified parents generating the children.
/// </summary>
/// <param name="parents">The parents</param>
/// <returns>The offspring (children) of the parents.</returns>
public override IList <IIndividual> Cross(IList <IIndividual> parents)
{
// same length
if (parents[0].Length != parents[1].Length)
{
return(parents);
}
int swapPoint = RandomizationRnd.GetInt(1, parents[0].Length - 2);
var firstChild = CreateChild(parents[0], parents[1], swapPoint);
var secondChild = CreateChild(parents[1], parents[0], swapPoint);
return(new List <IIndividual>()
{
firstChild, secondChild
});
}
/// <summary>
/// Generates the gene.
/// </summary>
/// <param name="geneIndex">Index of the gene.</param>
/// <returns>The new Gene.</returns>
public override Gene GenerateGene()
{
return(new Gene(Color.FromArgb(RandomizationRnd.GetInt(0, 256), RandomizationRnd.GetInt(0, 256), RandomizationRnd.GetInt(0, 256))));
}