Getting the Radius of Planar Curves?

Getting the moniker arc or arc-like curve seems like an exclusive club. These planar curves look like arcs, and taste like arcs, they are Offset on/from Srf from geodesic curves on a sphere. How can I accurately measure the new diameters though? Deconstruct Arc won’t take them. Is plugging the start/middle/end points into an Arc 3Pt and taking that radius my best bet?

arcs-ish.gh (10.0 KB)

You could use Curvature but, as you can see, the results are not consistent…


arcs-ish_re.gh (16.8 KB)

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You can use Arc 3points

arcs-ish.gh (16.7 KB)

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See attached (and play with tolerance … too small and you’ll get bananas)

arcs_V1.gh (18.6 KB)

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Thanks, those are great. It’s nice to see confirmation that it’s accurate.