Detecting self-intersecting polylines (without the API)

Hi,

I’m looking for a clever way to determine whether a polyline is self-intersecting or not!

Screenshot 2021-03-30 at 11.18.32740×747 11.3 KB

Is there a more clever way than comparing each line segment to all other segments and determining intersections that are not at the end points?

Any ideas?

Thanks.

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