public void CurveFromTo(Vector1D x1, Vector1D y1, Vector1D x3, Vector1D y3) { cb.CurveFromTo( (float)x1.Value(UnitsOfMeasure.Points), (float)y1.Value(UnitsOfMeasure.Points), (float)x3.Value(UnitsOfMeasure.Points), (float)y3.Value(UnitsOfMeasure.Points)); }