环绕底边中点旋转 UIView本身是支持旋转的,能够用UIView.transform属性实现旋转. The origin of the transform is the value of the center property, or the layer's anchorPoint property if it was changed. 这个旋转默认是环绕这UIView.center或者UIView.layer.anchorPoint旋转的. 似乎UIV
Transmitters Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 4955 Accepted: 2624 Description In a wireless network with multiple transmitters sending on the same frequencies, it is often a requirement that signals don't overlap, or at
iOS下使用OpenGL 如果使用GLKit View 那么不用担心屏幕旋转的问题,说明如下: If you change the size, scale factor, or drawable properties of a GLKit view, it automatically deletes and re-creates the appropriate framebuffer objects and renderbuffers the next time its contents are