# eases

> grab bag of easing equations

Latest version **1.0.8** (published 2015-10-07) · MIT license · 0 weekly downloads

## Install

```sh
npm install eases
pnpm add eases
yarn add eases
bun add eases
```

## Health

**Score 23/100 (F)** — status: abandoned.

Positive: has types package; no vulnerabilities; high quality score.

Warnings: low downloads; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 1.0.8 |
| Published | 2015-10-07 |
| First published | 2014-09-12 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | separate (@types/eases) |
| Module format | CommonJS |
| Dependencies | 0 |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 386 |
| Author | Matt DesLauriers |
| Maintainers | mattdesl |
| Keywords | ease, eases, robert, penner, easing, easings, linear, lerp, animation, tween, anim, animations, tweening, tweens, function, functions, expo, quint, quadratic |

## Links

- npm: https://www.npmjs.com/package/eases
- Repository: https://github.com/mattdesl/eases
- Issues: https://github.com/mattdesl/eases/issues
- npm.io page: https://npm.io/package/eases

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## Recent versions

- 1.0.8 (latest) — 2015-10-07
- 1.0.7 — 2015-10-07
- 1.0.6 — 2014-12-05
- 1.0.5 — 2014-12-05
- 1.0.4 — 2014-12-05
- 1.0.3 — 2014-12-04
- 1.0.2 — 2014-09-12
- 1.0.1 — 2014-09-12
- 1.0.0 — 2014-09-12

## README

# eases

[![stable](http://badges.github.io/stability-badges/dist/stable.svg)](http://github.com/badges/stability-badges)

This is a grab-bag of [Robert Penner's easing equations](http://www.robertpenner.com/easing/), most of the code from [glsl-easings](https://www.npmjs.org/package/glsl-easings). Pull requests for optimizations are welcome. 

```js
//require all eases
var quadIn = require('eases').quadIn

//require only the single function
var quadIn = require('eases/quad-in')
```

## Usage

[![NPM](https://nodei.co/npm/eases.png)](https://nodei.co/npm/eases/)

Each easing has its own file which can be required individually. The entry point also exports all eases with camelCase, so `require('eases/expo-in-out')` becomes `require('eases').expoInOut`.

Full list of eases:

```js
require('eases/back-in-out')
require('eases/back-in')
require('eases/back-out')
require('eases/bounce-in-out')
require('eases/bounce-in')
require('eases/bounce-out')
require('eases/circ-in-out')
require('eases/circ-in')
require('eases/circ-out')
require('eases/cubic-in-out')
require('eases/cubic-in')
require('eases/cubic-out')
require('eases/elastic-in-out')
require('eases/elastic-in')
require('eases/elastic-out')
require('eases/expo-in-out')
require('eases/expo-in')
require('eases/expo-out')
require('eases/linear')
require('eases/quad-in-out')
require('eases/quad-in')
require('eases/quad-out')
require('eases/quart-in-out')
require('eases/quart-in')
require('eases/quart-out')
require('eases/quint-in-out')
require('eases/quint-in')
require('eases/quint-out')
require('eases/sine-in-out')
require('eases/sine-in')
require('eases/sine-out')
```

All easing functions only remap a time value, and all have the same signature.

#### ```v = ease(t)```

Where `t` is typically a value between 0 and 1, and it returns a new float that has been eased. 

## License

MIT, see [LICENSE.md](http://github.com/mattdesl/eases/blob/master/LICENSE.md) for details.

---
_Source: https://npm.io/package/eases · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._