How do I get the directional vector from left thumb stick?

How do you get the decals world location? Wouldn’t that return the decal components location? If you move it up a slope or down a slope the decal material is projected onto what it hits… and that’s the position I’d need to get but I haven’t figured out how.

In my previous projects I think I made a raycast rig and I was able to store the point locations of what it was hitting.