Easing in Swift
This project is composed of a stand-alone library of easing functions implemented in Swift 4 (Easing.swift).
Type of supported functions:
Each type has its own separate ease-In, ease-Out and ease-In-Out form.
The functions are design to accept a generic floating-point value as time parameter,
and return a floating-point denoting the rate of change of a property over time.
Supported argument types:
Add the file Easing.swift to your project and you are ready to go. The Curve type allows access to all the different functions, for example:
let x: Float = 0.3 let a = Curve.quadratic.easeIn(x) // a = 0.09 let x2: CGFloat = 0.5 let b = Curve.sine.easeOut(x2) // b = 0.7071067811865
Here's an example of the use of the elastic ease-in-out function in an array of 75 points in the [0, 1] interval.
Swift Package Manager support
You'll find a SPM ready version in the
To quickly generate a Xcode project, navigate to the project folder in the terminal and run:
swift package generate-xcodeproj
(In order to generate an
Easing.xcodeprojfrom the project's
Package.swift, be sure to have the Swift compiler installed and
Swiftadded to your $PATH)
To quickly run the tests: