/// <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]))));
}