Convert Arc-like Curve to Arc

[Marco_Pellegrino]

Hello.
What’s the programmatic way to Cast an Arc-like Curve to Arc?

[11159 (Masaki)]

How about TryGetArc?

https://developer.rhino3d.com/api/RhinoCommon/html/Overload_Rhino_Geometry_Curve_TryGetArc.htm