Help needed: callback on zoom?

[giofilo]

Hi, thank you for this library, it's exactly what I need!
For my purposes, I need to know when an image is zoomed in and zoomed out. So, I would need something like a callback.
Looking at the source code, I saw both the useZoomGesture hook and the animationFunction prop, but I didn't understand how to use them.
So I'm asking for your help on this.
I don't want to customize or rewrite the entire animation, I just need to know when the zoom is activated or deactivated.
Ideally, I would like to have two callbacks: at the beginning of the animation and at the end of the animation.

Thanks!