public void ChromosomeGenesCanBeForcedForTestPurpose()
{
var chromosome = new StretchChromosome(5, 2, 4, 1);
var positions = chromosome.GetGenes().Select(g => (int)g.Value).ToArray();
Assert.That(positions[0], Is.EqualTo(4));
Assert.That(positions[1], Is.EqualTo(1));
}
private void DrawNodes(StretchChromosome chromosome)
{
foreach (var p in m_fitness.GetPositionsFor(chromosome))
{
Context.Layout.SetMarkup("<span color='blue'>{0}</span>".With(p.Node.Name));
Context.Buffer.DrawLayout(Context.GC, ScaleX(p.X, 0), ScaleY(p.Y, 0), Context.Layout);
}
}
public void ChromosomeGenesArePositionsWithinTheDefinedGrid()
{
var chromosome = new StretchChromosome(5, 2);
var positions = chromosome.GetGenes().Select(g => (int)g.Value).ToArray();
Assert.That(positions.Length, Is.EqualTo(2));
Assert.That(positions[0], Is.Not.EqualTo(positions[1]));
Assert.That(positions[0], Is.InRange(0, 4));
Assert.That(positions[1], Is.InRange(0, 4));
}
public void EvaluateFitnessAllInOneRow()
{
var fitness = new StretchFitness(definitionSample);
var chromosome = new StretchChromosome(24, 5, 0, 1, 2, 3, 4);
Assert.That(
fitness.WeightedDistanceFor(chromosome),
Is.EqualTo(1 * 7 + 2 * 4 + 3 * 2 + 1 * 6)
);
Assert.AreEqual(0.2437085, fitness.Evaluate(chromosome), precision);
}
public void NewChromosomeHasSameStructureAsExistingOne()
{
var chromosomeRef = new StretchChromosome(5, 2);
var chromosome = chromosomeRef.CreateNew();
var positions = chromosome.GetGenes().Select(g => (int)g.Value).ToArray();
Assert.That(positions.Length, Is.EqualTo(2));
Assert.That(positions[0], Is.Not.EqualTo(positions[1]));
Assert.That(positions[0], Is.InRange(0, 4));
Assert.That(positions[1], Is.InRange(0, 4));
}
public void EvaluateFitnessWithDiagonal()
{
var fitness = new StretchFitness(definitionSample);
var chromosome = new StretchChromosome(24, 5, 0, 7, 14, 21, 16);
var sqrt2 = Math.Sqrt(2);
Assert.AreEqual(
fitness.WeightedDistanceFor(chromosome),
sqrt2 * 7 + 2 * sqrt2 * 4 + 3 * sqrt2 * 2 + sqrt2 * 6,
precision
);
Assert.AreEqual(0.3446559, fitness.Evaluate(chromosome), precision);
}
public void EvaluateGeneralFitness()
{
var fitness = new StretchFitness(definitionSample);
var chromosome = new StretchChromosome(24, 5, 5, 12, 19, 0, 23);
var diag = Math.Sqrt(34);
var diag2 = Math.Sqrt(25);
var diag3 = Math.Sqrt(29);
Assert.AreEqual(
fitness.WeightedDistanceFor(chromosome),
diag3 * 7 + diag2 * 4 + 5 * 2 + diag * 6,
precision
);
Assert.AreEqual(0.9268313, fitness.Evaluate(chromosome), precision);
}
public void GeneForSpecifiedIndexCanHaveAllKindOfExpectedValues()
{
var kindOfGenes = Enumerable.Repeat(0, 5).ToArray();
var chromosome = new StretchChromosome(5, 2);
for (;;)
{
var newGene = chromosome.GenerateGene(0);
kindOfGenes[(int)newGene.Value] = 1;
if (kindOfGenes.Sum() == 5)
{
break;
}
}
}
public void RandomChromosomesEnsureThatWhenTryingEnoughNewChromosomeHasFullyDifferentGenes()
{
var chromosomeRef = new StretchChromosome(5, 2);
var positionsRef = chromosomeRef.GetGenes().Select(g => (int)g.Value).ToArray();
for (;;)
{
var chromosome = chromosomeRef.CreateNew();
var positions = chromosome.GetGenes().Select(g => (int)g.Value).ToArray();
if (positions[0] != positionsRef[0] && positions[1] != positionsRef[1])
{
break;
}
}
}
public void RandomChromosomesEnsureThatWhenTryingEnoughWeCanAllKindOfGenes()
{
var kindOfGenes = Enumerable.Repeat(0, 2 * 5).ToArray();
for (;;)
{
var chromosome = new StretchChromosome(5, 2);
var positions = chromosome.GetGenes().Select(g => (int)g.Value).ToArray();
kindOfGenes[positions[0]] = 1;
kindOfGenes[5 + positions[1]] = 1;
if (kindOfGenes.Sum() == 10)
{
break;
}
}
}
private void DrawPairs(StretchChromosome chromosome)
{
if (!m_showPairs)
{
return;
}
Context.GC.RgbFgColor = new Gdk.Color(255, 0, 0);
foreach (var pair in m_fitness.GetPairsFor(chromosome))
{
if (pair.Weigth == 0)
{
continue;
}
Context.GC.SetLineAttributes(pair.Weigth, Gdk.LineStyle.DoubleDash, Gdk.CapStyle.Butt, Gdk.JoinStyle.Round);
Context.Buffer.DrawLine(Context.GC, ScaleX(pair.P1.X, 2), ScaleY(pair.P1.Y, 2), ScaleX(pair.P2.X, 2), ScaleY(pair.P2.Y, 2));
}
}
