From www.youtube.com - September 7, 2011 12:13 PM

This video displays the results of running the code which can be found on the linked page which allows you to mimic the effect that Apple uses in their iBooks iPad app. The effect is not exact, but it is app store safe, the exact effect utilizes private API's which you cannot use in an app submitted to the app store, but this is a great looking similar effect.

 

✔ Sources: https://github.com/shuhongwu/leaves-zoom-enhanced