internal PolygonMutationChanges MutatePolygonPoint()
{
if (this.Polygons.Count > 0)
{
int position = random.Next(this.Polygons.Count);
PolygonMutationChanges changes = new PolygonMutationChanges();
changes.OldNegativeFitness = this.NegativeFitness;
Point[] oldPolygon = new Point[this.Polygons[position].Length];
Array.Copy(this.Polygons[position], oldPolygon, this.Polygons[position].Length);
changes.OldPolygon = oldPolygon;
changes.Index = position;
int pointPosition = random.Next(oldPolygon.Length);
int new_x = random.Next(originalImage.Width);
int new_y = random.Next(originalImage.Height);
Point newPoint = new Point(new_x, new_y);
this.Polygons[position][pointPosition] = newPoint;
this.NegativeFitness = computeNegativeFittness();
changes.NewNegativeFitness = this.NegativeFitness;
changes.NewPolygon = this.Polygons[position];
return(changes);
}
return(null);
}
internal void ApplyMutation(IMutationChanges changes)
{
if (changes == null)
{
return;
}
this.NegativeFitness = changes.NewNegativeFitness;
if (changes is PolygonAndColorMutationChanges)
{
PolygonAndColorMutationChanges change = (PolygonAndColorMutationChanges)changes;
int index = change.Index;
Point[] polygon = change.NewPolygon;
Brush brush = change.NewBrush;
this.Polygons[index] = polygon;
this.Brushes[index] = brush;
}
else if (changes is ColorMutationChanges)
{
ColorMutationChanges change = (ColorMutationChanges)changes;
int index = change.Index;
Brush brush = change.NewBrush;
this.Brushes[index] = brush;
}
else if (changes is PolygonMutationChanges)
{
PolygonMutationChanges change = (PolygonMutationChanges)changes;
int index = change.Index;
Point[] polygon = change.NewPolygon;
this.Polygons[index] = polygon;
}
else if (changes is SubstractPolygonMutationChanges)
{
SubstractPolygonMutationChanges change = (SubstractPolygonMutationChanges)changes;
int index = change.Index;
Point[] polygon = change.OldPolygon;
Brush brush = change.OldBrush;
//this.Polygons.Insert(index, polygon);
//this.GeneBrush.Insert(index, brush);
this.Brushes.RemoveAt(index);
this.Polygons.RemoveAt(index);
}
else if (changes is AddPolygonMutationChanges)
{
AddPolygonMutationChanges change = (AddPolygonMutationChanges)changes;
int index = change.Index;
Point[] polygon = change.NewPolygon;
Brush brush = change.NewBrush;
this.Brushes.Insert(index, brush);
this.Polygons.Insert(index, polygon);
}
}
internal PolygonMutationChanges MutatePolygon()
{
if (this.Polygons.Count > 0)
{
int position = random.Next(this.Polygons.Count);
PolygonMutationChanges changes = new PolygonMutationChanges();
changes.OldNegativeFitness = this.NegativeFitness;
changes.OldPolygon = this.Polygons[position];
changes.Index = position;
int nrOfPoints = 3 + random.Next(RandSeed);
Point[] newPolygon = getPoints(nrOfPoints);
this.Polygons[position] = newPolygon;
this.NegativeFitness = computeNegativeFittness();
changes.NewNegativeFitness = this.NegativeFitness;
changes.NewPolygon = newPolygon;
return(changes);
}
return(null);
}