void CreateEdge()
{
if (!edging) {
edging = true;
if (from == null) {
from = this;
}
else if (from == this) { return; }
else {
to = this;
parent.createEdge(from, to);
to = null;
from.focused = true;
from = null;
}
}
}
public Edge(Vertex start, Vertex end)
{
this.start = start;
this.end = end;
color = Color.White;
}
public Vertex createVertex(Vertex vertex)
{
Vertex clone = new Vertex(this, vertex.position);
if (!vertices.Contains(clone)) {
vertices.Add(clone);
return clone;
}
else {
int i = vertices.IndexOf(clone);
return vertices[i];
}
}
public Vertex loadVertex(int X, int Y)
{
Vertex clone = new Vertex(this, new Point (X, Y));
if (!vertices.Contains(clone)) {
vertices.Add(clone);
return clone;
}
else {
int i = vertices.IndexOf(clone);
return vertices[i];
}
}
public void createEdge(Vertex start, Vertex end)
{
Edge edge = new Edge(start, end);
bool added = edges.Add(edge);
// Remove edge if it already exists
if (!added) {
edges.Remove(edge);
}
}