在我的台上,我有一个屏幕上的形象(UIImageView)。 我要把它推向前进,以固定速度加快速度。 基本上,我试图产生一种效果,即它开始缓慢地pin,然后加快速度,直到pin峰如此快,因此你不能再看到形象(只是快速的 an)。
我通过使用消化装置和改变变革的轮换财产,但我不敢肯定如何控制速度。
在我的台上,我有一个屏幕上的形象(UIImageView)。 我要把它推向前进,以固定速度加快速度。 基本上,我试图产生一种效果,即它开始缓慢地pin,然后加快速度,直到pin峰如此快,因此你不能再看到形象(只是快速的 an)。
我通过使用消化装置和改变变革的轮换财产,但我不敢肯定如何控制速度。
你们再想用一个im子,把 an子 set到<代码>。 UIView AnimationCurveEaseIn。 延长期限,可能大约为5秒。 这应当实现你重新思考的效果。
样本代码:
CABasicAnimation *spin = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
spin.toValue = [NSNumber numberWithFloat:50*2*M_PI];
spin.duration = 5.f;
spin.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
[imageView.layer addAnimation:spin forKey:@"spinningAnimation"];
如果你想界定自己的 an曲,请参看以下网址:。 方法。
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