This is a port of the WWDC2012 sample application of the same name.
This sample demonstrates the usage of OpenGL in a scroll view. A swipe gesture on the top of the screen will slide the 20 small cubes left or right. A tap gesture on any of the small cubes will cause them to change color and speed based on the large cube. A tap gesture on the large cube will change its color and rotation speed.
Ported by: Peter Collins