/*
* AddArc adds an arc between two nodes to the graph.
*/
public void AddArc(Node node1, string node1ConnectionOption, Node node2)
{
//System.Console.WriteLine("\nIn AddArc()");
if (ContainsArc(node1.Name + "<-->" + node2.Name))
{
System.Console.WriteLine("An arc already exists between " + node1.Name + " and node " + node2.Name + "; Nothing done");
//System.Console.WriteLine("Leaving AddArc()\n");
return;
}
string node2ConnectionOption = Helper.GiveOppositeDirection(node1ConnectionOption);
if (!(node1.NodeArcOptionIsOpen(node1ConnectionOption) && node2.NodeArcOptionIsOpen(node2ConnectionOption)))
{
if (!node2.NodeArcOptionIsOpen(node1ConnectionOption))
{
System.Console.WriteLine("That arc option for node1 is not open; Nothing Done");
}
else
{
System.Console.WriteLine("That arc option for node2 is not open; Nothing Done");
}
//System.Console.WriteLine("Leaving AddArc()\n");
return;
}
node1.ConnectNodeToAnotherViaSpecifiedArcOption(node2, node1ConnectionOption);
node2.ConnectNodeToAnotherViaSpecifiedArcOption(node1, node2ConnectionOption);
Arc newArc = new Arc(node1, node2);
_arcs.Add(newArc);
//System.Console.WriteLine("Leaving AddArc()\n");
}
/*
* GetArc returns the arc that has the same specified name
*/
public Arc GetArc(string arcName)
{
//System.Console.WriteLine("\nIn GetArc()");
Node node1 = new Node();
Node node2 = new Node();
Arc blankArc = new Arc(node1, node2);
string reverseArcName = arcName.Substring(5, 1) + "<-->" + arcName.Substring(0, 1);
System.Console.WriteLine("Looking for arc " + reverseArcName + ", as well as " + arcName);
foreach (Arc arc in _arcs)
{
if (arc.Name.Equals(arcName) || arc.Name.Equals(reverseArcName))
{
System.Console.WriteLine("Arc " + arc.Name + " found");
//System.Console.WriteLine("Leaving GetArc()\n");
return arc;
}
}
System.Console.WriteLine("Arc NOT found; Return default/blank arc");
//System.Console.WriteLine("Leaving GetArc()\n");
return blankArc;
}