Defines enumerated values for styles to use during curve extension, such as "Line", "Arc" or "Smooth".
RhinoCommon (in RhinoCommon.dll)
public enum CurveExtensionStyle
Public Enumeration CurveExtensionStyle
Curve ends will be propagated linearly according to tangents.
Curve ends will be propagated arc-wise according to curvature.
Curve ends will be propagated smoothly according to curvature.