public Point[] ControlPoints()
{
if (WrappedObject.Input == null || WrappedObject.Output == null)
{
return(null);
}
Allocation a1 = WrappedObject.Input.Allocation;
Allocation a2 = WrappedObject.Output.Allocation;
if (d_prevFrom != null && d_prevTo != null && a1.Equals(d_prevFrom) && a2.Equals(d_prevTo))
{
return(d_controlPoints);
}
d_prevFrom = a1.Copy();
d_prevTo = a2.Copy();
d_controlPoints = ControlPoints(a1, a2, WrappedObject.Offset);
return(d_controlPoints);
}