| testing | coverage |
| ------- | ---------|
|  |  |

!easing

easing

``js
const Easing = require('easing')

const x = Easing(11,'linear')
// [ 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1 ]

const y = Easing(11,'quadratic')
// [ 0, 0.01, 0.04, 0.09, 0.16, 0.25, 0.36, 0.49, 0.64, 0.81, 1 ]
`

install

npm install --save easing

On the client

$3

Simply include browser-easing.js and you can directly use the Easing function globally

`html


`

$3

const Easing = require('easing')

Differences from the Original Package

This is a fork of rook2pawn/node-easing with the following changes:
- Transpile source files with Babel
- Create a library build using Webpack + babel-loader

$3

As distributed, the original project's source files, including rook2pawn/node-easing/browser-easing.js, are not valid ES5. This leads to knock-on issues, such as when bundling the library with a tool that uses UglifyJS:

Error from UglifyJS Showing "Unexpected token operator «=»" in browser-easing.js

`
js/main-ec3d69cc.js from UglifyJs
Unexpected token operator «=», expected punc «,» [../node_modules/easing/browser-easing.js:8,0][js/main-ec3d69cc.js:28118,46]
`


Hence, this fork transpiles the source files to valid ES5:

- The lib folder contains individual transpiled source files
- browser-easing.js, a UMD module as before, is also transpiled

Types of Easing

$3

For an array of 42 values that are linear,

Easing(42,'linear')

$3

For an array of 100 values that are quadratic,

Easing(100,'quadratic')




$3

For an array of 42 cubic values,

Easing(42,'cubic')

$3

For an array of 1492 quartic values,

Easing(1492,'quartic')

$3

Easing(25,'quintic')




$3

Easing(333,'sinusoidal')
Easing(333,'sin')

$3

Easing(314,'circular')




$3

Easing(81,'exponential')

options

$3

If we wanted to go from 0 to 1 back to 0 quadratically, simply call

Easing(100,'quadratic',{endToEnd:true});

$3

If we want to go from 1 to 0 (or 1 to 0 back to 1) instead of 0 to 1, say 'linear' style, simply call

Easing(100,'linear',{invert:true});

You can mix and match these options.

additional interfaces

$3

`js
const Easing = require('easing')
const x = Easing.event(11,'linear')
x.on('data', (data) => { ... })
`

$3


`js
const Easing = require('easing')
const x = Easing.stream(11,'linear')
x.pipe(process.stdout)
`

These two interfaces have their own options duration and repeat` that you can also mix and match.

These two interfaces can take one or all of these options

* invert : boolean
* endToEnd : boolean
* duration : integer (milliseconds, defaults to 1000)
* repeat : boolean (default false)

LICENSE

MIT