CAMediaTimingFunction相关

一：Animation Timing Curves

1：Linear Animation Timing



2：Ease-In Animation Timing



3:Ease-Out Animation Timing



4:Ease-In Ease-Out Animation Timing



5:Custom Animation Timing



自定义动画执行曲线设置

We create a custom timing with the initWithControlPoints:::: method on CAMediaTimingFunction like this:

C代码


- (CAMediaTimingFunction *)getTimingFunction {

CGFloat c1x = 0.5;

CGFloat c1y = 1.0;

CGFloat c2x = 0.5;

CGFloat c2y = 0.0;

return [[CAMediaTimingFunction alloc initWithControlPoints:cx1 :cy1 :cx2 :cy2];

}

写道
Since the initial and final values are already known (recall that they are {0, 0} and {1, 1}, respectively), we have to specify only the control
points. In our example, we set the first control point to {0.5, 1.0}
and the second control point to {0.5, 0.0}.

来源：http://o0o0o0o.iteye.com/blog/838547