I'm trying to line this archway with a single line of "LEDs" using geometry nodes. I have a vertex group that isolates the arch (see screenshot) and it ALMOST does what I want it to, except it's adding extra instances on edges adjacent to, and not within my vertex group. I'm sure I could probably get what I want by just adding actual points to my model on the straight vertical parts of the arch and just doing a simple Instances on Points but was trying to avoid having to add geometry just for decoration.
Even more awesome would be a solution that actually adds instances equidistant around the whole arch rather than still sticking them directly on the points on the curved section (that's what I was attempting to do in the first place).
Thanks for having a look!