This still needs to take the `event.deltaX`, `Y` or `Z` into account.

https://developer.mozilla.org/en-US/docs/Web/API/WheelEvent

I'm not sure how that value should be normalized, compared to the wheelData.

Looking at this (https://developer.mozilla.org/en-US/docs/Web/Reference/Events/wheel#Listening_to_this_event_across_browser) polyfil, the relation is:

event.deltaY = - 1/40 * originalEvent.wheelDelta;