hi,am new to houdini , i try to make a ribbon spine system , and i need to attach 5 individual bones to grid , i started by copy a sphere on the grid using copy to points sop , but i need to get there positions to the bones in object level , any help pls ?

Hey mohammadvaroqa,

you can attach objects to points using the rivet object.

Cheers
CYTE

use a NURBS for the surface and at the object level, use the sticky object to attach bones to the surface using the implicit uvs that NURBS already has. The sticky node already has orient to surface built-in. You can then use CHOPS to get any transforms you need (world, local or whatever). Hope this helps!