Digging around in Labs Road Generator/Intersection Solver, found this interesting phenomenon where two polygons can share points(or vertices?) I applied a transform to primitive 0, which raises it('s points) up in the Y direction, but the connecting line to primitive 1 confuses me so much.

Jikian
found this interesting phenomenon where two polygons can share points

It's pretty normal for polygons to be able to share points (however each polygon has unique set of vertices )
it's how most polygonal meshes are constructed
Open poly curves are still polygons, but this also extends beyond polygons, you can have multiple packed prims attached to a single point, etc

Hey Tomas, thanks for the reply!

Now that you mention it, I understand the connectivity a bit better. I usually treat such shapes as single polygons/poly curves so it was quite strange to see it split this way.

Jikian
I usually treat such shapes as single polygons/poly curves so it was quite strange to see it split this way.

Usually for simple nonbranching shapes like this Polypath SOP should recreate the shape as a single poly, would most likely not preserve any prim attrib a or prim groups