Draw curve around the outer points of a list of points

[martinsiegrist]

Convex Hull is named convex for a reason…

I googled for concave hull and found this:

https://www.codeproject.com/Articles/1201438/The-Concave-Hull-of-a-Set-of-Points

If you want to draw a curve around the outer points, you can use Metaball. The resulting curve will not go through the points however.

This forum has a few threads on this topic already:

Polyline along square collection vertices (concave hull)

I will certainly check this out, thanks for the suggestion. It’s a very interesting topic indeed. Thanks to you I’ve added concave hull to the title to favour future users. best regards, Sir Ernest Shackleton