Limiting mouse coordinates value

[AtonLucas]

Hi im brand new to cables and looking for some insight into a simple issue.
Im playing around with some image texture effects and im trying to make the effects interactive by letting my mouse x,y-values control things like pixle displacement streng, so howering above a picture and moving the mouse around will change the picture.

My issue is that i have multiple pictures and effects going in the same patch, and therefore my x,y coordinates are also effecting every other picture and effect in the patch. Is there a way to limit the effect to the square i have my image in? So the effect will stop tracking my mouse movement when above a certain value?

im happy to clarify if my question is confusing