Aizatulin

@Dougie0047 - if you take the idea of Tomas, you can replace the Z-direction by the direction to the neighbour points, which give you a more generic solution.

Hi,
there is nothing wrong with the clip sop but with the "dist" attribute. You probably want the distance to the point projected along the z-axis and not the distance to the point projected to the closest point.

Sure

and you are right, there should be another hint. I think it makes more sense to use the primitive attribute anyway, because if you capture the geometry, it is creating information about the prim and the primuv coordinates. So the node can restrict the search to the corresponding class.
Just checked it, it doesn't matter if the source class is point or prim type, it only matters for the surface.