CIFilter has a page curl transition effect. Just map the 't' value to the 
mouse/finger location.

--Graham


On 06/04/2010, at 10:55 AM, Laurent Daudelin wrote:

> I got my hands on an iPad today. I was really impressed with the built-in 
> book reader. When you flip the page while holding your finger down, the page 
> will curl and follow your finger. Very impressive! Anybody has any idea how 
> one would be able to achieve such effect?

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