Hello magicians,

I'm trying to create a vector that goes along the surface of this donut and down into the hole. So far my Vex snippet is like this but the direction is not correct.

Can anyone point me in the right direction (pun intended)? Thank you.

something like this?

tamte
something like this?

vector up = {0,1,0};
vector out_dir = v@P - getbbox_center(0);

v@tangent = normalize(cross(out_dir, up));
v@tangent_up = normalize(cross(v@tangent, v@N));

Thank you sir! I see where I missed.