This is a related thread: https://discourse.mcneel.com/t/help-needed-with-finding-centre-line-through-2-curves Note that there are various ways to define the average curve, A definition I find useful is the locus of points which are equal distances from the side curves, with distance defined as the shortest distance between the point and the side curves. A discussion of a method to find that curve using Rhino is here Help needed with finding centre line through 2 curves - #73 by davidcockey and a simple Grasshopper version follows.
Edit - cut and paste of posts from thread referenced.
Method for mid-curve which is locus of points which are equal distances from the side curves. This definition is independent of curve parameterization, and of relative position of curve ends.
- Create set of circles which are tangent to both side curves. (Spacing of circles is not critical.)
- Find center point of each circle
- CurveThroughPt through center points. (Chord may give smoother result than Uniform.) Alternative would be InterpCrv.
Attached example was done manually in Rhino. Should be possible to “automate” using Grasshopper. DC_Mid01.3dm (118.5 KB)
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here you go! Experimental drawing_David_option.3dm (111.5 KB)
David_option.gh1 (10.6 KB)[
David option.png1798x863 110 KB
