private void AddTown(string name)
{
if (!_routeNodes.ContainsKey(name))
{
_routeNodes.Add(name, new Node(_routeNodes.Count, name));
}
_matrix = null;
}
private void AddRoute(string fromTown, string toTown, int distance)
{
var fromNode = FindNode(fromTown);
var toNode = FindNode(toTown);
if (fromNode == null || toNode == null)
{
return;
}
var edgeKey = GenerateEdgeKey(fromNode, toNode);
if (_routeEdges.ContainsKey(edgeKey))
{
return;
}
var edge = new Edge(fromNode, toNode, distance);
_routeEdges.Add(edgeKey, edge);
_matrix = null;
}
public void ParseGraphString(string graphCsv)
{
var fragments = graphCsv.Split(',');
foreach (var fragment in fragments)
{
var normalizedFragment = fragment.Trim();
if (normalizedFragment.Length <= 2)
{
continue;
}
var routeFrom = normalizedFragment[0].ToString();
var routeTo = normalizedFragment[1].ToString();
var distance = int.Parse(normalizedFragment.Substring(2));
AddTown(routeFrom);
AddTown(routeTo);
AddRoute(routeFrom, routeTo, distance);
}
_matrix = null;
}