/// <summary>
/// Remove a point from its class.
/// </summary>
/// <param name="p">Point to remove.</param>
/// <returns>True if the point was removed, false if it was not previously a member of any class.</returns>
public bool Remove(TPoint p)
{
TLabel label;
if (!PointToLabel.TryGetValue(p, out label))
{
return(false);
}
PointToLabel.Remove(p);
var oldPoints = LabelToPoints[label];
var didRemove = oldPoints.Remove(p);
if (oldPoints.Count == 0)
{
LabelToPoints.Remove(label);
}
return(didRemove);
}
/// <summary>
/// Get the class label for a point.
/// </summary>
/// <param name="p">Point whose label is sought.</param>
/// <returns>The label. If the point is not present, return default(TLabel), which is likely null.</returns>
public TLabel GetClassLabel(TPoint p)
{
TLabel label;
return(!PointToLabel.TryGetValue(p, out label) ? default(TLabel) : label);
}
