public static Polyline ConvertToPolyline(this QuickTransaction tr, Entity id)
{
switch (id)
{
case Polyline poly:
return(poly);
case Line line:
return(LineToPoly(tr, line));
case Arc arc:
return(ArcToPoly(tr, arc));
case Circle c:
return(CircleToPoly(tr, c));
case Spline sp:
return(SplineToPoly(tr, sp));
case Polyline2d p2d:
return(ConvertToPolyline(p2d, tr));
default:
tr.WriteLine("Unsupported to polyline conversion: " + id.GetType().FullName);
return(null);
}
}