OpenGL Introduction
Ring Clock Demo
This is an OpenGL demo I wrote for the talk. It shows a ring with a clock in it. When it starts the ring rotates slowly around the y-axis. Single touch stops the rotation. Double click starts it up again. Swiping across the screen makes the ring rotate around the x-y vector of the swipe's path on the screen. The length of the swipe is use for rotation speed. The longer the swipe the faster the ring rotates. It's fun to play with.