I am trying to transform a circle actor that I created such that it is always perpendicular to a vector that goes through the origin. Apologies for amazing paint skills, here is a rough sketch of what I am trying to describe.

I have the circle done as a cylinder with a very small z, so it is originally based in the XY plane before the needed rotation.

I haven’t done linear algebra in a long time, can someone help me get the rotation (roll pitch yaw) from the point that the circle’s center is?