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animator.js

v0.3.2

Published

A small (1.6kb compressed and 1.1kb gziped!) high-performance animation library. Provide promise-based API.

Downloads

11

Readme

Animator

A mini (1.6kb compressed and 1.1kb gziped!) high-performance animation library.

Provide promise-based API.

Installation

In a browser:

<script src="https://s5.ssl.qhres.com/!fd9cabc8/animator-0.3.2.js"></script>

API

class Animator(duration, progress, easing)

Create an animation with duration millisecond.

var a1 = new Animator(1000,  function(p){
  var tx = 100 * p;
  block.style.transform = 'translateX(' 
    + tx + 'px)';     
});

var a2 = new Animator(1000,  function(p){
  var ty = 100 * p;
  block.style.transform = 'translate(100px,' 
    + ty + 'px)';     
});

var a3 = new Animator(1000,  function(p){
  var tx = 100 * (1-p);
  block.style.transform = 'translate(' 
    + tx + 'px, 100px)';     
});

var a4 = new Animator(1000,  function(p){
  var ty = 100 * (1-p);
  block.style.transform = 'translateY('  
    + ty + 'px)';     
});


block.addEventListener('click', async function(){
  while(1){
    await a1.animate();
    await a2.animate();
    await a3.animate();
    await a4.animate();
  }
});

animate()

Start the animation and return a promise.

ease(easing)

Return a new animation with a new easing.

var easeInOutBack = BezierEasing(0.68, -0.55, 0.265, 1.55);
//easeInOutBack

var a1 = new Animator(2000, function(ep,p){
  var x = 200 * ep;

  block.style.transform = 'translateX(' + x + 'px)';
}, easeInOutBack);

var a2 = a1.ease(p => easeInOutBack(1 - p)); //reverse a1

block.addEventListener('click', async function(){
  await a1.animate();
  await a2.animate();
});

cancel()

Cancel the animation and reject the promise.

Develop & Build

Download the codebase and run:

npm install

You can start a sever through:

npm start

Build and deploy the JS file:

npm run build

License

MIT