Today I started porting the page turn sample created here for Windows Phone 7 to WinRT (XAML, C#) for helping this question posted in Stack Overflow. But during porting I go
Hope this helps to you.
Here is the XAML to get exactly the look of the demo you linked to:
Path Calcualtion
Image1
Image2
OutPut
You can enlarge the size of image by putting image1 and image2 grid in viewbox like below