/// <summary>
/// Converts a Label to a Line label (that is, one with no side Locations).
/// </summary>
/// <param name="label">Label to convert.</param>
/// <returns>Label as Line label.</returns>
public static Label ToLineLabel(Label label)
{
Label lineLabel = new Label(Locations.Null);
for (int i = 0; i < 2; i++)
lineLabel.SetLocation(i, label.GetLocation(i));
return lineLabel;
}
/// <summary>
/// Compute the labelling for all dirEdges in this star, as well
/// as the overall labelling.
/// </summary>
/// <param name="geom"></param>
public override void ComputeLabelling(GeometryGraph[] geom)
{
base.ComputeLabelling(geom);
// determine the overall labelling for this DirectedEdgeStar
// (i.e. for the node it is based at)
_label = new Label(Locations.Null);
IEnumerator it = GetEnumerator();
while(it.MoveNext())
{
EdgeEnd ee = (EdgeEnd)it.Current;
Edge e = ee.Edge;
Label eLabel = e.Label;
for (int i = 0; i < 2; i++)
{
Locations eLoc = eLabel.GetLocation(i);
if (eLoc == Locations.Interior || eLoc == Locations.Boundary)
_label.SetLocation(i, Locations.Interior);
}
}
}