public HalfEdge CreateEdge(Node aNode, Node bNode, bool isDirected = false)
{
// if (aNode.Edge != null && bNode.Edge != null)
// throw new Exception();
var edgeAB = new HalfEdge(this);
var edgeBA = new HalfEdge(this);
var edge = new Edge(this);
var edgePolygon = CreatePolygon(edgeAB);
edgeAB.SetOrigin(aNode);
edgeBA.SetOrigin(bNode);
edgeAB.SetNext(edgeBA);
edgeAB.SetPrevious(edgeBA);
edgeAB.SetTwin(edgeBA);
edgeAB.SetPolygon(edgePolygon);
edgeBA.SetPolygon(edgePolygon);
if (isDirected)
{
edgeBA.SetActive(false);
}
edge.SetPair(edgeAB);
Edges.Add(edge);
HalfEdges.Add(edgeAB);
HalfEdges.Add(edgeBA);
return(edgeAB);
}