Forget to say. You can select existing points before the script run.
Double click on title -> reset points

Pilou
>>Will be cool if you can automatize this :) (or maybe yet exist something for this sort of triming ?
It's possible, but it will consume a lot of processor resources. Yes, it will be better to use boolean isect.

Brian
Yes. ( Voronoi + Plane ) -> Boolean merge -> Explode -> Exturde (tapered) -> Flow