public virtual ICurve2D[] GetTangentCurves(
	GeoVector direction,
	double umin,
	double umax,
	double vmin,
	double vmax
)

Public Overridable Function GetTangentCurves ( _
	direction As GeoVector, _
	umin As Double, _
	umax As Double, _
	vmin As Double, _
	vmax As Double _
) As ICurve2D()

public:
virtual array<ICurve2D^>^ GetTangentCurves(
	GeoVector direction, 
	double umin, 
	double umax, 
	double vmin, 
	double vmax
)