[英]Rotate a UIImageView around a point off screen? (center of uiImageView
[英]Rotate and translate UIImageView off and on screen
我该如何旋转并从屏幕的一侧平移UIImageView,然后从另一侧返回UIImageView。可以说,我有一个Wheel要旋转,然后从中间旋转并平移,然后移至屏幕的左侧,然后它从右侧“回到”中间。
我使用以下代码旋转并在屏幕外平移;
CABasicAnimation* rotationAnimation;
rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
rotationAnimation.toValue = [NSNumber numberWithFloat: -M_PI * 2.0 /* full rotation*/ * 2 * 1 ];
rotationAnimation.duration = 1;
rotationAnimation.cumulative = YES;
rotationAnimation.repeatCount = 1.0;
rotationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
rotationAnimation.delegate = self;
CABasicAnimation* translationAnimation;
translationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.translation.x"];
translationAnimation.toValue = [NSNumber numberWithFloat:-700];
translationAnimation.duration = 1;
translationAnimation.cumulative = YES;
translationAnimation.repeatCount = 1.0;
translationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
translationAnimation.removedOnCompletion = NO;
translationAnimation.fillMode = kCAFillModeForwards;
Dunno如果这是正确的方法,所以请帮助!
试试这个,它将为您工作
CABasicAnimation* rotationAnimation;
rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
rotationAnimation.toValue = [NSNumber numberWithFloat: -M_PI * 2.0 /* full rotation*/ * 2 * 1 ];
rotationAnimation.duration = 1;
rotationAnimation.cumulative = YES;
rotationAnimation.repeatCount = 1.0;
rotationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
rotationAnimation.delegate = self;
CABasicAnimation* translationAnimation;
translationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.translation.x"];
translationAnimation.toValue = [NSNumber numberWithFloat:-700];
translationAnimation.duration = 1;
translationAnimation.cumulative = YES;
translationAnimation.repeatCount = 1.0;
translationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
translationAnimation.removedOnCompletion = NO;
translationAnimation.fillMode = kCAFillModeForwards;
CAAnimationGroup *group = [CAAnimationGroup animation];
group.animations = [NSArray arrayWithObjects:rotationAnimation,translationAnimation, nil];
group.delegate = self;
group.removedOnCompletion = NO;
group.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
[[self.imageView.layer addAnimation:group forKey:@"randt"];
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