generative modeling for Rhino
To find the UV co-ordinates on a surface of a 3D point you need to use the CP Surface Component to find the closest point on the surface.
Every 2D point on a surface can be expressed in 3D space however not every 3D Point in space can be expressed in UV Surface co-ordinates. Hence finding its CP for that surface.
Danny , I assumed because my points were already on the surface in didn´t need to use the CP surface.