internal static bool IsForbidden(VisibilityEdge e) {
return e.IsPassable != null && !e.IsPassable() || e is TollFreeVisibilityEdge;
}
private static bool IsPassable(VisibilityEdge edge) {
return edge.IsPassable == null || edge.IsPassable();
}
static string GetEdgeColor(VisibilityEdge e, Port sourcePort, Port targetPort) {
if (sourcePort == null || targetPort == null)
return "green";
if (ApproximateComparer.Close(e.SourcePoint, sourcePort.Location) ||
ApproximateComparer.Close(e.SourcePoint, targetPort.Location)
|| ApproximateComparer.Close(e.TargetPoint, sourcePort.Location) ||
ApproximateComparer.Close(e.TargetPoint, targetPort.Location))
return "lightgreen";
return e.IsPassable == null || e.IsPassable() ? "green" : "red";
}
