With something like ruffles, I think the key would be to recognize what's the main mesh and what's the attached part. If I'm naïve about it and just systematically try out all possible matches at all the attachment edges, the complexity of the algorithm would explode.

If it's something like a polygon-efficient eye construction, on the other hand, there's no obvious main and attached part, but in that case there would only be a single "gluing" line, which is probably fine.

-- I'm not mad at you, just Westphalian.