Unfortunately not.
EDIT: Attached is a camera bound system I'm trying to make. If the camera leaves the set region, it is instantly moved back to the nearest point on the region.
It does have some quirks, though:
- It jumps a little when you attempt to move camera out of region
- You can click and drag the camera around on the minimap, and it will constantly switch between that target position and the nearest position on the bound many times a second