public RationalCubicSplineController(RationalCubicSpline spline)
     : base(spline.Smoothing)
 {
     base._minimumValue           = -0.5;
     base._isMinimumValueIncluded = false;
     _descriptionText             = "Smoothing parameter p (-0.5<p<0: overshooting; p=0: cubic spline; p=infinity: linear interpolation):";
     _spline = spline;
 }
 public RationalCubicSplineController(RationalCubicSpline spline)
   : base(spline.Smoothing)
 {
   base._minimumValue = -0.5;
   base._isMinimumValueIncluded=false;
   _descriptionText = "Smoothing parameter p (-0.5<p<0: overshooting; p=0: cubic spline; p=infinity: linear interpolation):";
   _spline = spline;
 }