private static bool GetPoints(Edge edge, Criterion c, out Site l, out Site r) {
l = (c == Criterion.Vertex) ? edge.LeftVertex : edge.LeftSite;
r = (c == Criterion.Vertex) ? edge.RightVertex : edge.RightSite;
return true;
}
private static bool GetPoints(Edge edge, Criterion c, out Site l, out Site r) {
l = (c == Criterion.Vertex) ? edge.LeftVertex : edge.LeftSite;
r = (c == Criterion.Vertex) ? edge.RightVertex : edge.RightSite;
return true;
}