public void ClearLinks()
{
PrimarySources.Clear();
SecondarySources.Clear();
PrimaryTargets.Clear();
SecondaryTargets.Clear();
}
protected virtual void OnTracksChanged(params QueryField [] fields)
{
HandleTracksChanged(this, new TrackEventArgs(fields));
foreach (PrimarySource psource in PrimarySources.ToArray())
{
psource.NotifyTracksChanged(fields);
}
}
private void MatchSources()
{
// Check every source in the secondary collection.
var nodes = PrimarySources;
for (var node = nodes.First; node != null;)
{
// Get the source at this node, and the pixel it falls in.
var current = node.Value;
var coordinate = current.EquatorialCoordinate;
var pixel = Comparer.GetPixel(coordinate);
var nodeList = GetCandidateMatches(pixel);
// Find the source that is closest to the candidate source.
var matchedNode = GetNearestSourceNode(current, nodeList);
// Did we get a match?
if (matchedNode is null)
{
// No matches here, go to the next node.
node = node.Next;
continue;
}
// Add the match.
var match = matchedNode.Value;
PrimaryMatchedSources.Add(current);
SecondaryMatchedSources.Add(match);
// Remove the matched source from the pixel collection so it cannot be matched again.
var position = Comparer.GetPixel(match.EquatorialCoordinate);
nodeList = SourceDictionary[position];
nodeList.Remove(matchedNode);
// Remove the matched source from the primary list (so we end up with all unmatched sources afterwards).
SecondarySources.Remove(matchedNode);
// Remove this node from the secondary list and update the position.
var temp = node;
node = node.Next;
PrimarySources.Remove(temp);
continue;
}
}