[Material] Minimap Zoom + Offset

Hi there.

I currently try myself in creating a Material for a texture based Minimap.
This is the Current State:

Having a texture - Check
Having an Offset based on a Focused Actor - Check
Having a Radial mask based on a gradient - Check

All that is missing now, is the Zoom.

I mean… I know I can multiply the UV with the 1-X of the Zoom Scalar… And it zooms the Texture… But… How to keep the offset, so the Targeted Actor will stay in the Minimap center?

By any chance, have you ever found solution to your problem?
I know I’m very late to the party, but this is exactly what I’m trying to achieve, but have little experience with materials.