A demo can be seen in YouTube : http://youtu.be/OVkXEWo1JFc ===== About the author ===== Lian (Liansheng Zhang) is a senior software developer who worked 4 years at EA mobile and has more than 10 years experiences of developing mobile applications. He has worked on large range of mobile platforms. After joining EA Mobile in 2006, Lian contributed to many of EA's major mobile products, he worked in frameworks team with special focus on 3D graphic and sound engine, he built the sound engine for the Rockband. Before joining EA, Lian worked at Isee3D, My Virtual Model and AppsGo. In his spare time, Lian likes to study Geology, He has a Ph.D in Geochemistry from University of Paris, France. Please send your questions, comments and feedback to: [email protected]