Calls a block a given number of times, spread out over a given duration, with the delays between calls – i.e. the acceleration/deceleration – determined by a given Bézier curve.

Think of it as an NSTimer with specifiable acceleration behavior.

• When you need an NSTimer with varying delays.
• When you need to synchronize behavior with a custom-timed CAAnimation.

[[CPAccelerationTimer accelerationTimerWithTicks:10
		totalDuration:20.0
		controlPoint1:CGPointMake(0.7, 0.0) // ease in
		controlPoint2:CGPointMake(0.5, 1.0) // ease out
		atEachTickDo:^(NSUInteger tickIndex) {
			self.heart.transform = CGAffineTransformIdentity;
			[UIView animateWithDuration:0.3 animations:^{
				self.heart.transform = CGAffineTransformMakeScale(1.2, 1.2);
			}];
		} completion:^{
			self.heart.transform = CGAffineTransformIdentity;
	}]
run];

Feel free to comment, fork, and submit pull requests!

• This component was built with ARC. Should your project not use ARC, make sure to specify the -fobjc-arc flag on this component’s files in Build phases > Compile sources.

The CPAccelerationTimer component is released under the MIT License.

The MIT License (MIT) Copyright (c) 2012-2013 compeople AG et al

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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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