private void DrawLines(AngleSimlirityEdge sim, Brush b, double StrokeThickness, double StrokeDashArray)
{
try
{
Point fromP = sinks[sim.StartVertextID - 1].CenterLocation;
Point toP = sinks[sim.EndVertextID - 1].CenterLocation;
Line lin = new Line();
lin.Stroke = b;
lin.StrokeThickness = StrokeThickness;
lin.StrokeDashArray = new DoubleCollection() { StrokeDashArray };
lin.X1 = fromP.X;
lin.Y1 = fromP.Y;
lin.X2 = toP.X;
lin.Y2 = toP.Y;
mycanvas.Children.Add(lin);
}
catch
{
}
}
/// <summary>
/// get the angles for all sinks.
/// </summary>
private void FindAngles()
{
int id = 0;
for (int i = 0; i < sinks.Count; i++)
{
Sensor isink = sinks[i];
for (int j = i + 1; j < sinks.Count; j++)
{
if (i != j)
{
id += 1;
Sensor jsink = sinks[j];
double ang = new Angle().GetAngle(isink.Position, jsink.Position, sourcePointCnterlocation);
// string str = " # : " + isink.ID + " :" + sourcePointCnterlocation.ID + " :" + jsink.ID + " >>>" + ang;
// Console.WriteLine(str);
AngleSimlirityEdge edge = new AngleSimlirityEdge() { Angle = ang, StartVertex = isink, EndVertex = jsink, ID = id };
isink.Simlirities.Add(edge);
allSimlirityEdges.Add(edge);
}
}
}
}
/// <summary>
/// matching: https://en.wikipedia.org/wiki/Matching_(graph_theory)
/// </summary>
/// <param name="simlirities"></param>
private void ComputeClusters1(List<AngleSimlirityEdge> simlirities)
{
//DrawLines(allSimlirityEdges, Brushes.Black); // complete graph
//DrawLines(simlirities, Brushes.Black); // sirnked graph
simlirities.Sort(new sorter());
List<Cluster> LocalClusters = new List<Cluster>();
int cid = 0;
// more than 2 sinks:
if (sinks.Count >= 3)
{
foreach (AngleSimlirityEdge edge in simlirities)
{
// both are not clusters
bool bothAreClusterd = edge.StartVertex.IsClustered && edge.EndVertex.IsClustered;
bool bothNotClustered = !edge.StartVertex.IsClustered && !edge.EndVertex.IsClustered; ; // both the verticies of the the edge are not clusterd.
bool justOneClustered = (edge.StartVertex.IsClustered || edge.EndVertex.IsClustered) && !bothAreClusterd; // simi-saturated
if (bothNotClustered) // both vertecies of the edge are not clustered.
{
if (edge.Angle <= angThre) // this value need to be checked maybe you can chek if the angle is less than 45. : matching or the matximum matching
{
cid++;
// both verticies are not clusterd
Cluster cluster = new Cluster();
cluster.MinAngle = edge.Angle;
cluster.SourceLocation = sourcePointCnterlocation;
cluster.Min = edge.StandardScor;
cluster.ID = cid;
edge.StartVertex.IsClustered = true;
edge.EndVertex.IsClustered = true;
cluster.Members.Add(edge.StartVertex);
cluster.Members.Add(edge.EndVertex);
LocalClusters.Add(cluster);
// darw: optioanal
//DrawLines(edge,Brushes.Black, 4,0.5); // blocks:
}
}
else if (justOneClustered) // simi-saturated
{
// only one vertext is clusterd. add to cluster.
Sensor clusterdVertex; // the one which clusterd
Sensor notClusterdVertex;
if (edge.StartVertex.IsClustered) { clusterdVertex = edge.StartVertex; notClusterdVertex = edge.EndVertex; }
else { clusterdVertex = edge.EndVertex; notClusterdVertex = edge.StartVertex; }
Cluster FoundCluster = FindClusterByVertext(clusterdVertex, LocalClusters); //
if (FoundCluster != null)
{
double difAngle1 = Math.Sqrt(Math.Abs(Math.Pow(edge.Angle, 2) - Math.Pow(FoundCluster.MinAngle, 2)));
// double difAngle2 = Math.Abs(Math.Pow(edge.Angle, 2) - Math.Pow(FoundCluster.MinAngle, 2));
if (difAngle1 <= angThre) // this should be between 5 and 45.
{
FoundCluster.Members.Add(notClusterdVertex);
notClusterdVertex.IsClustered = true;
/*
if (FoundCluster.MinAngle > edge.Angle)
{
FoundCluster.MinAngle = edge.Angle;
}*/
// DrawLines(edge, Brushes.Blue, 2,1);
}
}
}
else if (bothAreClusterd)
{
// both are clustered in seperate clusters.
Cluster startC = FindClusterByVertext(edge.StartVertex, LocalClusters);
Cluster endC = FindClusterByVertext(edge.EndVertex, LocalClusters);
if (startC != endC)
{
if (!startC.IsRed && !endC.IsRed)
{
double dif2 = Math.Abs(Math.Pow(startC.MinAngle, 2) - Math.Pow(endC.MinAngle, 2));
if (dif2 <= angThre)
{
startC.Members.AddRange(endC.Members);
if (startC.MinAngle > endC.MinAngle) { startC.MinAngle = endC.MinAngle; }
endC.ID = -1;
startC.IsRed = true;
// DrawLines(edge, Brushes.Red, 1, 7);
}
}
}
}
}
}
else
{
// two sinks only
if (sinks.Count == 2)
{
if (simlirities.Count == 1)
{
AngleSimlirityEdge edge = simlirities[0];
if (edge.Angle <= angThre)
{
Cluster cluster = new Cluster();
cluster.SourceLocation = sourcePointCnterlocation;
cluster.Min = edge.StandardScor;
cluster.ID = cid;
edge.StartVertex.IsClustered = true;
edge.EndVertex.IsClustered = true;
cluster.Members.Add(edge.StartVertex);
cluster.Members.Add(edge.EndVertex);
LocalClusters.Add(cluster);
}
else
{
Cluster cluster1 = new Cluster();
cluster1.SourceLocation = sourcePointCnterlocation;
cluster1.Min = 0;
cluster1.ID = cid;
edge.StartVertex.IsClustered = true;
cluster1.Members.Add(edge.StartVertex);
LocalClusters.Add(cluster1);
Cluster cluster2 = new Cluster();
cluster2.SourceLocation = sourcePointCnterlocation;
cluster2.Min = 0;
cluster2.ID = cid;
edge.EndVertex.IsClustered = true;
cluster2.Members.Add(edge.EndVertex);
LocalClusters.Add(cluster2);
}
}
}
}
// reorganzied:
int clusteredNodesCount = 0;
foreach (Cluster c in LocalClusters)
{
if (c.ID != -1) // removed -1.
{
clusteredNodesCount += c.Members.Count; // count how many nodes which are clustered.
Clusters.Add(c);
}
}
// add the isolated sinks:
if (clusteredNodesCount < sinks.Count)
{
foreach (Sensor sin in sinks)
{
if (!sin.IsClustered)
{
Cluster cluster = new Cluster();
cluster.ID = Clusters.Count + 1;
cluster.SourceLocation = sourcePointCnterlocation;
cluster.Members.Add(sin);
Clusters.Add(cluster);
}
}
}
// finished:
foreach (Sensor sink in sinks)
{
sink.IsClustered = false;
}
}