Please don't trigger the animation on scroll into view
Its very confusing, andparticularily if you scroll through the page quickly, as it draws the users attention all overconstantly to the pageright side and the left side containing the actual information you should be reading gets forgotten.
Perhaps instead trigger the animation on mouse hover or on scroll stop instead to draw their attention whatever it is you're highlighting
In addition, perhaps make it sowould be nice if you could make the animation repeats if neededrepeat without reloading the page, so if you missed what was being pointed out the first time the animation ran, you can trigger the animation to run again.