Curve
public static Curve ByBlendBetweenCurves(Curve curve1, Curve curve2, bool endOrStart1 = true, bool endOrStart2 = false)
public static Curve ByIsoCurveOnSurface(Surface baseSurface, int direction = 0, double parameter = 0)
public double ParameterAtChordLength(double distance = 0.5, double location = 0, bool forward = true)