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https://github.com/fastred/AHKBendableView

UIView subclass that bends its edges when its position changes.
https://github.com/fastred/AHKBendableView

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UIView subclass that bends its edges when its position changes.

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# AHKBendableView

[![CocoaPods](https://img.shields.io/cocoapods/v/AHKBendableView.svg?style=flat)](https://github.com/fastred/AHKBendableView)

`BendableView` is a `UIView` subclass that bends its edges when its position change is animated. Internally, `BendableView` contains `CAShapeLayer`, which acts as its background. The layer's `path` changes during animations, creating an effect of bending. Subviews stay intact. You can find a more extensive description on my blog: [Recreating Skype's Action Sheet Animation](http://holko.pl/2014/06/26/recreating-skypes-action-sheet-animation/) and [Follow-Up Post](http://holko.pl/2014/06/28/action-sheet-follow-up/).

![Demo GIF](https://raw.githubusercontent.com/fastred/AHKBendableView/master/demo.gif)

## Usage

`BendableView` contains three public properties:

```swift
var damping: CGFloat // set to animate the view's edges differently than the whole view (used in an internal spring animation)
var initialSpringVelocity: CGFloat // same as above
var fillColor: UIColor // "background" color of the bendable layer
```

You should set them before animating the position change of the view. I propose to use slightly lower values for `damping` and `initialSpringVelocity` than the values used when calling `+animateWithDuration:delay:usingSpringWithDamping:
initialSpringVelocity:options:animations:completion:`, just like in this example:

```swift
let bv = BendableView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
view.addSubview(bv)

// bending setup
bv.fillColor = UIColor.redColor()
bv.damping = 0.7
bv.initialSpringVelocity = 0.8

UIView.animateWithDuration(0.5, delay: 0, usingSpringWithDamping: 0.9, initialSpringVelocity: 0.9, options: .BeginFromCurrentState | .AllowUserInteraction, animations: {
bv.frame.origin = CGPoint(x: 200, y: 300)
bv.frame.size = CGSize(width: 150, height: 150)
}, completion: nil)
```

Have fun!

## Example project

To run the example project, clone the repo, and open `Example/AHKBendableView.xcodeproj`.

## Requirements

- iOS 7.0
- ARC

## Installation

AHKBendableView is available through [CocoaPods](http://cocoapods.org). To install
it, simply add the following line to your Podfile:

pod "AHKBendableView"

## Author

Arkadiusz Holko:

* [Blog](http://holko.pl/)
* [@arekholko on Twitter](https://twitter.com/arekholko)