2014/10/15 下午 10:14:20

iphone Programming Glossary: sphere

http://stackoverflow.com/questions/3790238/fish-eye-effect-with-core-animation

Animation in OpenGL ES view freezes when UIScrollView is dragged on iPhone

http://stackoverflow.com/questions/4876488/animation-in-opengl-es-view-freezes-when-uiscrollview-is-dragged-on-iphone

an animated transparent OpenGL ES subview a modification of Apple's template EAGLView class which draws a rotating sphere. Just like Apple's example CADisplayLink is used on devices where available. On the same screen there is a UIScrollView..

How can I improve the performance of my custom OpenGL ES 2.0 depth texture generation?

http://stackoverflow.com/questions/6051237/how-can-i-improve-the-performance-of-my-custom-opengl-es-2-0-depth-texture-gener

ES 2.0 shaders to display 3 D representations of molecular structures. It does this by using procedurally generated sphere and cylinder impostors drawn over rectangles instead of these same shapes built using lots of vertices. The downside to.. like the PowerVR series in iOS devices but I can't think of a better way to do this. My depth fragment shader for spheres the most common display element looks to be at the heart of this bottleneck Renderer Utilization in Instruments is pegged.. depth texture generation and the overall rendering pipeline in the application. First I re enabled the precalculated sphere depth and lighting texture that I'd used before with little effect only now I use proper lowp precision values when handling..

How do I detect a touch over a specific area

http://stackoverflow.com/questions/647122/how-do-i-detect-a-touch-over-a-specific-area

view. CGPoint touchPoint touch locationInView self test the coordinates however you wish ... To test against a sphere you would calculate the distance from the touch point to the center of the sphere then check whether this was less than..