private void RemoveNode(Node dead)
{
if (dead.Equals(home))
{
home = null;
}
if (dead.Equals(destination))
{
destination = null;
}
while (dead.Edges.Length() > 0)
{
Edge e = dead.Edges[dead.Edges.Length() - 1];
RemoveEdge(e);
}
nodes.Remove(dead);
dead.Stroke.Ink.DeleteStroke(dead.Stroke);
}