Animate UIView with 25+ timing functions. (Bounce, elastic, exponential, etc.)
Allows you to animate views in your app in the way you're familiar with (e.g. [UIKit animateWithDuration:animations:]) but adds 25+ easing functions (from jQuery) to make your animations more visceral.
Advantages:
- Methods very similar to Apple's API.
- No Swizzling or other dangerous nonsense.
- No need to mess with keypaths, just change the properties on UIView and you're golden.
- Proper transform matrix interpolation, so rotations look correct.
- Install with cocoapods.
- Category method properly prefixed.
HELP NEEDED: The best I can do so far is to require an array of views that are changed in the block. If you know of any way to get from a block references to the objects it captures please let me know.
In your Podfile, add this line:
pod "MTAnimation"
Then add the import:
#import <UIView+MTAnimation.h>
Clone the repo (or download the zip) and run the iPad demo app to play around.
Similar to the UIKits animation methods but you must supply an array of all the views you will be animating and an easing function.
[UIView mt_animateViews:@[_logoImageView]
duration:0.25
timingFunction:kMTEaseOutBack
animations:^{
CGRect r = _logoImageView.frame;
r.origin.x = 50;
_logoImageView.frame = r;
}];
You can animate:
- UIView - frame
- UIView - bounds
- UIView - center
- UIView - alpha
- UIView - transform (CGAffineTransform)
- CALayer - transform (CATransform3D)
You can cut an animation into parts (using the range param). You might use this to swap the view half way through a flip animation:
_logoImageView.image = [UIImage imageNamed:@"logo"];
[UIView mt_animateViews:@[_logoImageView]
duration:0.25
options:0
timingFunction:kMTEaseOutBack
exaggeration:MTAnimationExaggerationDefault
range:MTMakeAnimationRange(0, 0.135)
animations:^{
CGFloat radians = mt_degreesToRadians(_endRotation);
_logoImageView.layer.transform = CATransform3DMakeRotation(radians, 0, 1, 0);
} completion:^{
_logoImageView.image = [UIImage imageNamed:@"logo-flip"];
[UIView mt_animateViews:@[_logoImageView]
duration:0.25
options:0
timingFunction:kMTEaseOutBack
exaggeration:MTAnimationExaggerationDefault
range:MTMakeAnimationRange(0.135, 1)
animations:^{
CGFloat radians = mt_degreesToRadians(_endRotation);
_logoImageView.layer.transform = CATransform3DMakeRotation(radians, 0, 1, 0);
} completion:^{
}];
}];
This code will animate until the image is sideways, then swap out the image view's image and continue the animation so it looks like it has a backside.
I have TODO: comments on stuff I need some help with, so feel free.
Inspired by Nocho Soto's NSBKeyframeAnimation Library
Code extracts from Ivan Vu�ica & Amr Aboelela work on CAAnimation
Easing functions from jQuery
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