public static GridHierarchy CreateFromPixels(PixelData pixels)
{
GridHierarchy result = new GridHierarchy(pixels.Width, pixels.Height, 1);
for (var i = 0; i <= pixels.Width - 1; i++)
{
for (var j = 0; j <= pixels.Height - 1; j++)
{
Cluster cluster = new Cluster()
{
Position = new Vector2(i, j),
Color = pixels.Colors[i, j]
};
result.Grid[i, j].Add(cluster);
result.Clusters.Add(cluster);
}
}
foreach (var cluster in result.Clusters)
{
var neighbours = result.GetNeighbours(cluster);
var colorDirection = VectorHelper.GetAveragePosition(neighbours.Select(v => v.ColorVector - cluster.ColorVector));
cluster.ColorDirection = colorDirection;
}
return(result);
}
public override IHierarchy Generate()
{
float rate = 2.0F;
float newSize = this.Size * rate;
GridHierarchy result = new GridHierarchy(System.Convert.ToInt32(Math.Ceiling(this.Width / (double)rate) + 1), System.Convert.ToInt32(Math.Ceiling(this.Height / (double)rate) + 1), newSize)
{
Rank = this.Rank + 1
};
// Combine to a new cluster
foreach (var cluster in Clusters)
{
Cluster similar = cluster.GetMostSimilar(GetNeighbours(cluster)).FirstOrDefault();
if (similar != null)
{
if (cluster.Parent == null && similar.Parent == null)
{
result.Clusters.Add(Cluster.Combine(cluster, similar));
}
else
{
Cluster.Combine(cluster, similar);
}
}
else
{
result.Clusters.Add(cluster);
}
}
// Initialize properties
foreach (var cluster in result.Clusters)
{
cluster.Position = cluster.GetAveragePosition();
cluster.Color = cluster.GetAverageColor();
//cluster.ColorDirection = cluster.GetAverageColorDirection();
}
// Locate to cell
foreach (var SubCluster in result.Clusters)
{
Vector2 p = SubCluster.Position;
int x = System.Convert.ToInt32(p.X / (double)result.Size);
int y = System.Convert.ToInt32(p.Y / (double)result.Size);
result.Grid[x, y].Add(SubCluster);
}
foreach (var cluster in result.Clusters)
{
var neighbours = result.GetNeighbours(cluster);
var colorDirection = VectorHelper.GetAveragePosition(neighbours.Select(v => v.ColorVector - cluster.ColorVector));
cluster.ColorDirection = colorDirection;
}
return(result);
}