JSFiddle - React, Tailwind, and code Playground

by mattpodwysocki

HTML

<script src="https://dl.dropboxusercontent.com/u/10929935/rx.js"></script>
<script src="https://dl.dropboxusercontent.com/u/10929935/rx.binding.js"></script>
<script src="https://dl.dropboxusercontent.com/u/10929935/rx.dom.js"></script>
<script src="https://dl.dropboxusercontent.com/u/10929935/rx.time.js"></script>

CSS

html { background: #000; }

JavaScript

var canvas, context, toggle;

init();
animate();

function init() {
    
    canvas = document.createElement( 'canvas' );
    canvas.width = 512;
    canvas.height = 512;
    
    context = canvas.getContext( '2d' );
    
    document.body.appendChild( canvas );
}

function animate() {
    Rx.Observable.timer(
        0,0,
        Rx.Scheduler.requestAnimationFrameScheduler)
        .timestamp()
        .subscribe(draw);
}

function draw(x) {
    
    var time = x.timestamp * 0.002;
    var x = Math.sin( time ) * 192 + 256;
    var y = Math.cos( time * 0.9 ) * 192 + 256;
    toggle = !toggle;
    
    context.fillStyle = toggle ? 'rgb(200,200,20)' :  'rgb(20,20,200)';
    context.beginPath();
    context.arc( x, y, 10, 0, Math.PI * 2, true );
    context.closePath();
    context.fill();
    
}