requirebin sketch

index.js

// Our RequestAnimationFrame helper
var raf = require('raf')
var ease = require('ease-component')

// Create our canvas and add it to the page
var canvas = document.createElement('canvas')
document.body.appendChild(canvas)
var ctx = canvas.getContext('2d')

// Make the canvas fullscreen and keep track of the width/height
var width = canvas.width = window.innerWidth
var height = canvas.height = window.innerHeight

// Pick a loop duration
var duration = 2000

// This will get called up to 60 times/second
function render () {
  // Keep track of our "progress" in the loop, always between 0 and 1
  var p = (Date.now() % duration) / duration

  // Transform our progress such that we have "forward" and "backward" halves
  // If we're < 50%, go double time so that we "finish" at the 50% mark
  if (p < 0.5) {
    var ep = ease.inOutSine(p*2)
    
  // If we're >= 50% do that in reverse so that we start "finished" and end back at 0
  } else {
    var ep = ease.inOutSine((1-p)*2)
  }

  // Clear everything from before
  ctx.clearRect(0,0,width,height)

  // Pick a new x position based on the progress
  var h = (ep * height/2) + ((1-ep) * height/8)
  var w = h
  var x = width/2 - w/2
  var y = height/2 - h/2

  // Draw a new box
  ctx.fillRect(x, y, w, h)
  
  // Let's do that again!
  raf(render)
}

// Kick it off
raf(render)

minified.js

require=function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){var process=module.exports={};process.nextTick=function(){var canSetImmediate=typeof window!=="undefined"&&window.setImmediate;var canPost=typeof window!=="undefined"&&window.postMessage&&window.addEventListener;if(canSetImmediate){return function(f){return window.setImmediate(f)}}if(canPost){var queue=[];window.addEventListener("message",function(ev){var source=ev.source;if((source===window||source===null)&&ev.data==="process-tick"){ev.stopPropagation();if(queue.length>0){var fn=queue.shift();fn()}}},true);return function nextTick(fn){queue.push(fn);window.postMessage("process-tick","*")}}return function nextTick(fn){setTimeout(fn,0)}}();process.title="browser";process.browser=true;process.env={};process.argv=[];function noop(){}process.on=noop;process.addListener=noop;process.once=noop;process.off=noop;process.removeListener=noop;process.removeAllListeners=noop;process.emit=noop;process.binding=function(name){throw new Error("process.binding is not supported")};process.cwd=function(){return"/"};process.chdir=function(dir){throw new Error("process.chdir is not supported")}},{}],2:[function(require,module,exports){(function(process){(function(){var getNanoSeconds,hrtime,loadTime;if(typeof performance!=="undefined"&&performance!==null&&performance.now){module.exports=function(){return performance.now()}}else if(typeof process!=="undefined"&&process!==null&&process.hrtime){module.exports=function(){return(getNanoSeconds()-loadTime)/1e6};hrtime=process.hrtime;getNanoSeconds=function(){var hr;hr=hrtime();return hr[0]*1e9+hr[1]};loadTime=getNanoSeconds()}else if(Date.now){module.exports=function(){return Date.now()-loadTime};loadTime=Date.now()}else{module.exports=function(){return(new Date).getTime()-loadTime};loadTime=(new Date).getTime()}}).call(this)}).call(this,require("_process"))},{_process:1}],raf:[function(require,module,exports){var now=require("performance-now"),global=typeof window==="undefined"?{}:window,vendors=["moz","webkit"],suffix="AnimationFrame",raf=global["request"+suffix],caf=global["cancel"+suffix]||global["cancelRequest"+suffix],isNative=true;for(var i=0;i<vendors.length&&!raf;i++){raf=global[vendors[i]+"Request"+suffix];caf=global[vendors[i]+"Cancel"+suffix]||global[vendors[i]+"CancelRequest"+suffix]}if(!raf||!caf){isNative=false;var last=0,id=0,queue=[],frameDuration=1e3/60;raf=function(callback){if(queue.length===0){var _now=now(),next=Math.max(0,frameDuration-(_now-last));last=next+_now;setTimeout(function(){var cp=queue.slice(0);queue.length=0;for(var i=0;i<cp.length;i++){if(!cp[i].cancelled){try{cp[i].callback(last)}catch(e){setTimeout(function(){throw e},0)}}}},Math.round(next))}queue.push({handle:++id,callback:callback,cancelled:false});return id};caf=function(handle){for(var i=0;i<queue.length;i++){if(queue[i].handle===handle){queue[i].cancelled=true}}}}module.exports=function(fn){if(!isNative){return raf.call(global,fn)}return raf.call(global,function(){try{fn.apply(this,arguments)}catch(e){setTimeout(function(){throw e},0)}})};module.exports.cancel=function(){caf.apply(global,arguments)}},{"performance-now":2}]},{},[]);require=function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({"ease-component":[function(require,module,exports){exports.linear=function(n){return n};exports.inQuad=function(n){return n*n};exports.outQuad=function(n){return n*(2-n)};exports.inOutQuad=function(n){n*=2;if(n<1)return.5*n*n;return-.5*(--n*(n-2)-1)};exports.inCube=function(n){return n*n*n};exports.outCube=function(n){return--n*n*n+1};exports.inOutCube=function(n){n*=2;if(n<1)return.5*n*n*n;return.5*((n-=2)*n*n+2)};exports.inQuart=function(n){return n*n*n*n};exports.outQuart=function(n){return 1- --n*n*n*n};exports.inOutQuart=function(n){n*=2;if(n<1)return.5*n*n*n*n;return-.5*((n-=2)*n*n*n-2)};exports.inQuint=function(n){return n*n*n*n*n};exports.outQuint=function(n){return--n*n*n*n*n+1};exports.inOutQuint=function(n){n*=2;if(n<1)return.5*n*n*n*n*n;return.5*((n-=2)*n*n*n*n+2)};exports.inSine=function(n){return 1-Math.cos(n*Math.PI/2)};exports.outSine=function(n){return Math.sin(n*Math.PI/2)};exports.inOutSine=function(n){return.5*(1-Math.cos(Math.PI*n))};exports.inExpo=function(n){return 0==n?0:Math.pow(1024,n-1)};exports.outExpo=function(n){return 1==n?n:1-Math.pow(2,-10*n)};exports.inOutExpo=function(n){if(0==n)return 0;if(1==n)return 1;if((n*=2)<1)return.5*Math.pow(1024,n-1);return.5*(-Math.pow(2,-10*(n-1))+2)};exports.inCirc=function(n){return 1-Math.sqrt(1-n*n)};exports.outCirc=function(n){return Math.sqrt(1- --n*n)};exports.inOutCirc=function(n){n*=2;if(n<1)return-.5*(Math.sqrt(1-n*n)-1);return.5*(Math.sqrt(1-(n-=2)*n)+1)};exports.inBack=function(n){var s=1.70158;return n*n*((s+1)*n-s)};exports.outBack=function(n){var s=1.70158;return--n*n*((s+1)*n+s)+1};exports.inOutBack=function(n){var s=1.70158*1.525;if((n*=2)<1)return.5*(n*n*((s+1)*n-s));return.5*((n-=2)*n*((s+1)*n+s)+2)};exports.inBounce=function(n){return 1-exports.outBounce(1-n)};exports.outBounce=function(n){if(n<1/2.75){return 7.5625*n*n}else if(n<2/2.75){return 7.5625*(n-=1.5/2.75)*n+.75}else if(n<2.5/2.75){return 7.5625*(n-=2.25/2.75)*n+.9375}else{return 7.5625*(n-=2.625/2.75)*n+.984375}};exports.inOutBounce=function(n){if(n<.5)return exports.inBounce(n*2)*.5;return exports.outBounce(n*2-1)*.5+.5};exports["in-quad"]=exports.inQuad;exports["out-quad"]=exports.outQuad;exports["in-out-quad"]=exports.inOutQuad;exports["in-cube"]=exports.inCube;exports["out-cube"]=exports.outCube;exports["in-out-cube"]=exports.inOutCube;exports["in-quart"]=exports.inQuart;exports["out-quart"]=exports.outQuart;exports["in-out-quart"]=exports.inOutQuart;exports["in-quint"]=exports.inQuint;exports["out-quint"]=exports.outQuint;exports["in-out-quint"]=exports.inOutQuint;exports["in-sine"]=exports.inSine;exports["out-sine"]=exports.outSine;exports["in-out-sine"]=exports.inOutSine;exports["in-expo"]=exports.inExpo;exports["out-expo"]=exports.outExpo;exports["in-out-expo"]=exports.inOutExpo;exports["in-circ"]=exports.inCirc;exports["out-circ"]=exports.outCirc;exports["in-out-circ"]=exports.inOutCirc;exports["in-back"]=exports.inBack;exports["out-back"]=exports.outBack;exports["in-out-back"]=exports.inOutBack;exports["in-bounce"]=exports.inBounce;exports["out-bounce"]=exports.outBounce;exports["in-out-bounce"]=exports.inOutBounce},{}]},{},[]);var raf=require("raf");var ease=require("ease-component");var canvas=document.createElement("canvas");document.body.appendChild(canvas);var ctx=canvas.getContext("2d");var width=canvas.width=window.innerWidth;var height=canvas.height=window.innerHeight;var duration=2e3;function render(){var p=Date.now()%duration/duration;if(p<.5){var ep=ease.inOutSine(p*2)}else{var ep=ease.inOutSine((1-p)*2)}ctx.clearRect(0,0,width,height);var h=ep*height/2+(1-ep)*height/8;var w=h;var x=width/2-w/2;var y=height/2-h/2;ctx.fillRect(x,y,w,h);raf(render)}raf(render);

package.json

{
  "name": "requirebin-sketch",
  "version": "1.0.0",
  "dependencies": {
    "raf": "2.0.4",
    "ease-component": "1.0.0"
  }
}

page-head.html

<style type='text/css'>html, body { margin: 0; padding: 0; border: 0; }
body, html { height: 100%; width: 100%; }</style>

requirebin.md

made with requirebin