static void AddNeigbour(_3COL.Node a, _3COL.Node b)
{
if (connections.FirstOrDefault(t => (t.Item1 == a && t.Item2 == b) || (t.Item1 == b && t.Item2 == a)) != null)
{
return;
}
a.AddNeighbour(b);
connections.Add(new Tuple <_3COL.Node, _3COL.Node>(a, b));
}
static Variable Vari(_3COL.Node node, CColor color)
{
string name = color.name + "X" + node.NodeName;
if (curVariables.FirstOrDefault(v => v.Name == name) == null)
{
Variable variable = new Variable(name);
curVariables.Add(variable);
}
return(curVariables.Find(v => v.Name == name));
}