/// <summary>
 /// </summary>
 /// <param name="delta">delta of the drag</param>
 /// <param name="e">the modified edge</param>
 /// <param name="site"></param>
 internal static void DragEdgeWithSite(Point delta, GeomEdge e, Site site)
 {
     e.RaiseLayoutChangeEvent(delta);
     site.Point += delta;
     CreateCurveOnChangedPolyline(e);
 }
 /// <summary>
 /// </summary>
 /// <param name="delta">delta of the drag</param>
 /// <param name="e">the modified edge</param>
 /// <param name="site"></param>
 internal static void DragEdgeWithSite(Point delta, GeomEdge e, Site site) {
     e.RaiseLayoutChangeEvent(delta);
     site.Point += delta;
     CreateCurveOnChangedPolyline(e);
 }