Swiftpack.co - Package - manuelCarlos/Easing

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:

  • Quadratic
  • Cubic
  • Quartic
  • Quintic
  • Sine
  • Circular
  • Exponential
  • Elastic
  • Back
  • Bounce

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:

  • Float
  • Double
  • CGFloat

Usage

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 feature/SPMIntegration branch.

  • 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 Swift added to your $PATH)

  • To quickly run the tests:

    swift test

Github

link
Stars: 39
Help us keep the lights on

Dependencies

Used By

Total: