Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel includes JSX processing.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                
<canvas class="canvas"></canvas>

<div class="help">?</div> 

<div class="ui">
  <input class="ui-input" type="text" />
  <span class="ui-return">↵</span>
</div>

<div class="overlay">
  <div class="tabs">
    <div class="tabs-labels"><span class="tabs-label">Commands</span><span class="tabs-label">Info</span><span class="tabs-label">Share</span></div>

    <div class="tabs-panels">
      <ul class="tabs-panel commands">
        <li class="commands-item"><span class="commands-item-title">Text</span><span class="commands-item-info" data-demo="Hello :)">Type anything</span><span class="commands-item-action">Demo</span></li>
        <li class="commands-item"><span class="commands-item-title">Countdown</span><span class="commands-item-info" data-demo="#countdown 10">#countdown<span class="commands-item-mode">number</span></span><span class="commands-item-action">Demo</span></li>
        <li class="commands-item"><span class="commands-item-title">Time</span><span class="commands-item-info" data-demo="#time">#time</span><span class="commands-item-action">Demo</span></li>
        <li class="commands-item"><span class="commands-item-title">Rectangle</span><span class="commands-item-info" data-demo="#rectangle 30x15">#rectangle<span class="commands-item-mode">width x height</span></span><span class="commands-item-action">Demo</span></li>
        <li class="commands-item"><span class="commands-item-title">Circle</span><span class="commands-item-info" data-demo="#circle 25">#circle<span class="commands-item-mode">diameter</span></span><span class="commands-item-action">Demo</span></li>

        <li class="commands-item commands-item--gap"><span class="commands-item-title">Animate</span><span class="commands-item-info" data-demo="The time is|#time|#countdown 3|#icon thumbs-up"><span class="commands-item-mode">command1</span>&nbsp;|<span class="commands-item-mode">command2</span></span><span class="commands-item-action">Demo</span></li>
      </ul>

      <div class="tabs-panel ui-details">
        <div class="ui-details-content">
          <h1>Shape Shifter</h1>
          <p>
            An experiment by <a href="//www.kennethcachia.com" target="_blank">Kenneth Cachia<a/>.<br/>
            <a href="//fortawesome.github.io/Font-Awesome/#icons-new" target="_blank">Font Awesome</a> is being used to render all #icons.
          </p>

          <br/><p>Visit <a href="http://www.kennethcachia.com/shape-shifter/?a=#icon thumbs-up" target="_blank">Shape Shifter</a> to use icons.</p>
        </div>
      </div>

      <div class="tabs-panel ui-share">
        <div class="ui-share-content">
          <h1>Sharing</h1>
          <p>Simply add <em>?a=</em> to the current URL to share any static or animated text. Examples:</p>
          <p>
            <a href="http://www.kennethcachia.com/shape-shifter?a=Hello" target="_blank">www.kennethcachia.com/shape-shifter?a=Hello</a><br/>
            <a href="http://www.kennethcachia.com/shape-shifter?a=Hello|#countdown 3" target="_blank">www.kennethcachia.com/shape-shifter?a=Hello|#countdown 3</a>
          </p>
        </div>
      </div>
    </div>
  </div>
</div>

              
            
!

CSS

              
                
body {
  font-family: "Avenir", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: #79a8ae;
  color: #666;
  font-size: 16px;
  line-height: 1.5em;
}

h1 {
  color: #111;
  margin: 0 0 12px 0;
  font-size: 24px;
  line-height: 1.5em;
}

p {
  margin: 0 0 10x 0;
}

a {
  color: #888;
  text-decoration: none;
  border-bottom: 1px solid #ccc;
}

a:hover {
  border-bottom-color: #888;
}

body,
.overlay {
  -webkit-perspective: 1000;
  -webkit-perspective-origin-y: 25%;
}

.body--ready {
  /* Ideas
  background: -webkit-linear-gradient(top, #e2b986 -10%, #241c35 140%);
  background: -webkit-linear-gradient(top, #c97369 -40%, #241c35 130%);
  background: -webkit-linear-gradient(top, #fac4c4 -10%, #606386 140%);
  background: -webkit-linear-gradient(top, #519ab0 0%, #414A6D 110%);
  background: -webkit-linear-gradient(top, rgb(129, 0, 170) 0%, rgb(43, 4, 114) 110%);
  background: -webkit-linear-gradient(top, rgb(163, 235, 189) 0%, rgb(16, 93, 145) 110%);
  background: -webkit-linear-gradient(top, rgb(165, 103, 189) 0%, rgb(75, 233, 214) 120%);
  */

  background: -webkit-linear-gradient(top, rgb(203, 235, 219) 0%, rgb(55, 148, 192) 120%);
  background: -moz-linear-gradient(top, rgb(203, 235, 219) 0%, rgb(55, 148, 192) 120%);
  background: -o-linear-gradient(top, rgb(203, 235, 219) 0%, rgb(55, 148, 192) 120%);
  background: -ms-linear-gradient(top, rgb(203, 235, 219) 0%, rgb(55, 148, 192) 120%);
  background: linear-gradient(top, rgb(203, 235, 219) 0%, rgb(55, 148, 192) 120%);
}

.body--ready .overlay {
  -webkit-transition: -webkit-transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -moz-transition: -moz-transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -ms-transition: -ms-transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -o-transition: -o-transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1);
  transition: transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1);
}


.ui {
  position: absolute;
  left: 50%;
  bottom: 5%;
  width: 300px;
  margin-left: -150px;
}

.ui-input {
  width: 100%;
  height: 50px;
  background: none;
  font-size: 24px;
  font-weight: bold;
  color: #fff;
  text-align: center;
  border: none;
  border-bottom: 2px solid white;
}

.ui-input:focus {
  outline: none;
  border: none;
  border-bottom: 2px solid white;
}

.ui-return {
  display: none;
  position: absolute;
  top: 20px;
  right: 0;
  padding: 3px 2px 0 2px;
  font-size: 10px;
  line-height: 10px;
  color: #fff;
  border: 1px solid #fff;
}

.ui--enter .ui-return {
  display: block;
}

.ui--wide {
  width: 76%;
  margin-left: 12%;
  left: 0;
}

.ui--wide .ui-return {
  right: -20px;
}

.help {
  position: absolute;
  top: 40px;
  right: 40px;
  width: 25px;
  height: 25px;
  text-align: center;
  font-size: 13px;
  line-height: 27px;
  font-weight: bold;
  cursor: pointer;
  background: #fff;
  color: #79a8ae;
  opacity: .9;

  -webkit-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -moz-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -ms-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -o-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
}

.help:hover {
  opacity: 1;
}

.overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 550px;
  height: 490px;
  margin: -260px 0 0 -275px;
  opacity: 0;

  -webkit-transform: rotateY(90deg);
  -moz-transform: rotateY(90deg);
  -ms-transform: rotateY(90deg);
  -o-transform: rotateY(90deg);
  transform: rotateY(90deg);
}

.overlay--visible {
  opacity: 1;

  -webkit-transform: rotateY(0);
  -moz-transform: rotateY(0);
  -ms-transform: rotateY(0);
  -o-transform: rotateY(0);
  transform: rotateY(0);
}

.ui-share,
.ui-details {
  opacity: .9;
  background: #fff;
  z-index: 2;
}

.ui-details-content,
.ui-share-content {
  padding: 100px 50px;
}

.commands {
  margin: 0;
  padding: 0;
  list-style: none;
  cursor: pointer;
}

.commands-item {
  font-size: 12px;
  line-height: 22px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 20px;
  background: #fff;
  margin-top: 1px;
  color: #333;
  opacity: .9;

  -webkit-transition: -webkit-transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -moz-transition: -moz-transform 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -ms-transition: -ms-transform 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -o-transition: -o-transform 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  transition: transform 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
}

.commands-item--gap {
  margin-top: 9px;
}

.commands-item:hover {
  opacity: 1;
}

.commands-item:hover .commands-item-action {
  background: #333;
}

.commands-item a {
  display: inline-block;
}

.commands-item-mode {
  display: inline-block;
  margin-left: 3px;
  font-style: italic;
  color: #ccc;
}

.commands-item-title {
  display: inline-block;
  width: 150px;
}

.commands-item-info {
  display: inline-block;
  width: 300px;
  font-size: 14px;
  text-transform: none;
  letter-spacing: 0;
  font-weight: normal;
  color: #aaa;
}

.commands-item-action {
  display: inline-block;
  float: right;
  margin-top: 3px;
  text-transform: uppercase;
  font-size: 10px;
  line-height: 10px;
  color: #fff;
  background: #90c9d1;
  padding: 5px 10px 4px 10px;
  border-radius: 3px;
}

.commands-item:first-child {
  margin-top: 0;
}

.twitter-share {
  position: absolute;
  top: 4px;
  right: 20px;
}


.tabs-labels {
  margin-bottom: 9px;
}

.tabs-label {
  display: inline-block;
  background: #fff;
  padding: 10px 20px;
  font-size: 12px;
  line-height: 22px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #333;
  opacity: .5;
  cursor: pointer;
  margin-right: 2px;

  -webkit-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -moz-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -ms-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -o-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
}

.tabs-label:hover {
  opacity: .9;
}

.tabs-label--active {
  opacity: .9;
}

.tabs-panel {
  display: none;
}

.tabs-panel--active {
  display: block;
}

.tab-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

.touch .ui-input {
  display: none;
}

              
            
!

JS

              
                
/*

  Shape Shifter
  =============
  A canvas experiment by Kenneth Cachia
  http://www.kennethcachia.com

  Updated code
  ------------
  https://github.com/kennethcachia/Shape-Shifter 

*/


var S = {
  init: function () {
    var action = window.location.href,
        i = action.indexOf('?a=');

    S.Drawing.init('.canvas');
    document.body.classList.add('body--ready');

    if (i !== -1) {
      S.UI.simulate(decodeURI(action).substring(i + 3));
    } else {
      S.UI.simulate('Shape|Shifter|Type|to start|#rectangle|#countdown 3||');
    }

    S.Drawing.loop(function () {
      S.Shape.render();
    });
  }
};


S.Drawing = (function () {
  var canvas,
      context,
      renderFn
      requestFrame = window.requestAnimationFrame       ||
                     window.webkitRequestAnimationFrame ||
                     window.mozRequestAnimationFrame    ||
                     window.oRequestAnimationFrame      ||
                     window.msRequestAnimationFrame     ||
                     function(callback) {
                       window.setTimeout(callback, 1000 / 60);
                     };

  return {
    init: function (el) {
      canvas = document.querySelector(el);
      context = canvas.getContext('2d');
      this.adjustCanvas();

      window.addEventListener('resize', function (e) {
        S.Drawing.adjustCanvas();
      });
    },

    loop: function (fn) {
      renderFn = !renderFn ? fn : renderFn;
      this.clearFrame();
      renderFn();
      requestFrame.call(window, this.loop.bind(this));
    },

    adjustCanvas: function () {
      canvas.width = window.innerWidth;
      canvas.height = window.innerHeight;
    },

    clearFrame: function () {
      context.clearRect(0, 0, canvas.width, canvas.height);
    },

    getArea: function () {
      return { w: canvas.width, h: canvas.height };
    },

    drawCircle: function (p, c) {
      context.fillStyle = c.render();
      context.beginPath();
      context.arc(p.x, p.y, p.z, 0, 2 * Math.PI, true);
      context.closePath();
      context.fill();
    }
  }
}());


S.UI = (function () {
  var input = document.querySelector('.ui-input'),
      ui = document.querySelector('.ui'),
      help = document.querySelector('.help'),
      commands = document.querySelector('.commands'),
      overlay = document.querySelector('.overlay'),
      canvas = document.querySelector('.canvas'),
      interval,
      isTouch = false, //('ontouchstart' in window || navigator.msMaxTouchPoints),
      currentAction,
      resizeTimer,
      time,
      maxShapeSize = 30,
      firstAction = true,
      sequence = [],
      cmd = '#';

  function formatTime(date) {
    var h = date.getHours(),
        m = date.getMinutes(),
    m = m < 10 ? '0' + m : m;
    return h + ':' + m;
  }

  function getValue(value) {
    return value && value.split(' ')[1];
  }

  function getAction(value) {
    value = value && value.split(' ')[0];
    return value && value[0] === cmd && value.substring(1);
  }

  function timedAction(fn, delay, max, reverse) {
    clearInterval(interval);
    currentAction = reverse ? max : 1;
    fn(currentAction);

    if (!max || (!reverse && currentAction < max) || (reverse && currentAction > 0)) {
      interval = setInterval(function () {
        currentAction = reverse ? currentAction - 1 : currentAction + 1;
        fn(currentAction);

        if ((!reverse && max && currentAction === max) || (reverse && currentAction === 0)) {
          clearInterval(interval);
        }
      }, delay);
    }
  }

  function reset(destroy) {
    clearInterval(interval);
    sequence = [];
    time = null;
    destroy && S.Shape.switchShape(S.ShapeBuilder.letter(''));
  }

  function performAction(value) {
    var action,
        value,
        current;

    overlay.classList.remove('overlay--visible');
    sequence = typeof(value) === 'object' ? value : sequence.concat(value.split('|'));
    input.value = '';
    checkInputWidth();

    timedAction(function (index) {
      current = sequence.shift();
      action = getAction(current);
      value = getValue(current);

      switch (action) {
        case 'countdown':
          value = parseInt(value) || 10;
          value = value > 0 ? value : 10;

          timedAction(function (index) {
            if (index === 0) {
              if (sequence.length === 0) {
                S.Shape.switchShape(S.ShapeBuilder.letter(''));
              } else {
                performAction(sequence);
              }
            } else {
              S.Shape.switchShape(S.ShapeBuilder.letter(index), true);
            }
          }, 1000, value, true);
          break;

        case 'rectangle':
          value = value && value.split('x');
          value = (value && value.length === 2) ? value : [maxShapeSize, maxShapeSize / 2];

          S.Shape.switchShape(S.ShapeBuilder.rectangle(Math.min(maxShapeSize, parseInt(value[0])), Math.min(maxShapeSize, parseInt(value[1]))));
          break;

        case 'circle':
          value = parseInt(value) || maxShapeSize;
          value = Math.min(value, maxShapeSize);
          S.Shape.switchShape(S.ShapeBuilder.circle(value));
          break;

        case 'time':
          var t = formatTime(new Date());

          if (sequence.length > 0) {
            S.Shape.switchShape(S.ShapeBuilder.letter(t));
          } else {
            timedAction(function () {
              t = formatTime(new Date());
              if (t !== time) {
                time = t;
                S.Shape.switchShape(S.ShapeBuilder.letter(time));
              }
            }, 1000);
          }
          break;

        default:
          S.Shape.switchShape(S.ShapeBuilder.letter(current[0] === cmd ? 'What?' : current));
      }
    }, 2000, sequence.length);
  }

  function checkInputWidth(e) {
    if (input.value.length > 18) {
      ui.classList.add('ui--wide');
    } else {
      ui.classList.remove('ui--wide');
    }

    if (firstAction && input.value.length > 0) {
      ui.classList.add('ui--enter');
    } else {
      ui.classList.remove('ui--enter');
    }
  }

  function bindEvents() {
    document.body.addEventListener('keydown', function (e) {
      input.focus();

      if (e.keyCode === 13) {
        firstAction = false;
        reset();
        performAction(input.value);
      }
    });

    input.addEventListener('input', checkInputWidth);
    input.addEventListener('change', checkInputWidth);
    input.addEventListener('focus', checkInputWidth);

    help.addEventListener('click', function (e) {
      overlay.classList.toggle('overlay--visible');
      overlay.classList.contains('overlay--visible') && reset(true);
    });

    commands.addEventListener('click', function (e) {
      var el,
          info,
          demo,
          tab,
          active,
          url;

      if (e.target.classList.contains('commands-item')) {
        el = e.target;
      } else {
        el = e.target.parentNode.classList.contains('commands-item') ? e.target.parentNode : e.target.parentNode.parentNode;
      }

      info = el && el.querySelector('.commands-item-info');
      demo = el && info.getAttribute('data-demo');
      url = el && info.getAttribute('data-url');

      if (info) {
        overlay.classList.remove('overlay--visible');

        if (demo) {
          input.value = demo;

          if (isTouch) {
            reset();
            performAction(input.value);
          } else {
            input.focus();
          }
        } else if (url) {
          //window.location = url;
        }
      }
    });

    canvas.addEventListener('click', function (e) {
      overlay.classList.remove('overlay--visible');
    });
  }

  function init() {
    bindEvents();
    input.focus();
    isTouch && document.body.classList.add('touch');
  }

  // Init
  init();

  return {
    simulate: function (action) {
      performAction(action);
    }
  }
}());


S.UI.Tabs = (function () {
  var tabs = document.querySelector('.tabs'),
      labels = document.querySelector('.tabs-labels'),
      triggers = document.querySelectorAll('.tabs-label'),
      panels = document.querySelectorAll('.tabs-panel');

  function activate(i) {
    triggers[i].classList.add('tabs-label--active');
    panels[i].classList.add('tabs-panel--active');
  }

  function bindEvents() {
    labels.addEventListener('click', function (e) {
      var el = e.target,
          index;

      if (el.classList.contains('tabs-label')) {
        for (var t = 0; t < triggers.length; t++) {
          triggers[t].classList.remove('tabs-label--active');
          panels[t].classList.remove('tabs-panel--active');

          if (el === triggers[t]) {
            index = t;
          }
        }

        activate(index);
      }
    });
  }

  function init() {
    activate(0);
    bindEvents();
  }

  // Init
  init();
}());


S.Point = function (args) {
  this.x = args.x;
  this.y = args.y;
  this.z = args.z;
  this.a = args.a;
  this.h = args.h;
};


S.Color = function (r, g, b, a) {
  this.r = r;
  this.g = g;
  this.b = b;
  this.a = a;
};

S.Color.prototype = {
  render: function () {
    return 'rgba(' + this.r + ',' +  + this.g + ',' + this.b + ',' + this.a + ')';
  }
};


S.Dot = function (x, y) {
  this.p = new S.Point({
    x: x,
    y: y,
    z: 5,
    a: 1,
    h: 0
  });

  this.e = 0.07;
  this.s = true;

  this.c = new S.Color(255, 255, 255, this.p.a);

  this.t = this.clone();
  this.q = [];
};

S.Dot.prototype = {
  clone: function () {
    return new S.Point({
      x: this.x,
      y: this.y,
      z: this.z,
      a: this.a,
      h: this.h
    });
  },

  _draw: function () {
    this.c.a = this.p.a;
    S.Drawing.drawCircle(this.p, this.c);
  },

  _moveTowards: function (n) {
    var details = this.distanceTo(n, true),
        dx = details[0],
        dy = details[1],
        d = details[2],
        e = this.e * d;

    if (this.p.h === -1) {
      this.p.x = n.x;
      this.p.y = n.y;
      return true;
    }

    if (d > 1) {
      this.p.x -= ((dx / d) * e);
      this.p.y -= ((dy / d) * e);
    } else {
      if (this.p.h > 0) {
        this.p.h--;
      } else {
        return true;
      }
    }

    return false;
  },

  _update: function () {
    if (this._moveTowards(this.t)) {
      var p = this.q.shift();

      if (p) {
        this.t.x = p.x || this.p.x;
        this.t.y = p.y || this.p.y;
        this.t.z = p.z || this.p.z;
        this.t.a = p.a || this.p.a;
        this.p.h = p.h || 0;
      } else {
        if (this.s) {
          this.p.x -= Math.sin(Math.random() * 3.142);
          this.p.y -= Math.sin(Math.random() * 3.142);
        } else {
          this.move(new S.Point({
            x: this.p.x + (Math.random() * 50) - 25,
            y: this.p.y + (Math.random() * 50) - 25,
          }));
        }
      }
    }

    d = this.p.a - this.t.a;
    this.p.a = Math.max(0.1, this.p.a - (d * 0.05));
    d = this.p.z - this.t.z;
    this.p.z = Math.max(1, this.p.z - (d * 0.05));
  },

  distanceTo: function (n, details) {
    var dx = this.p.x - n.x,
        dy = this.p.y - n.y,
        d = Math.sqrt(dx * dx + dy * dy);

    return details ? [dx, dy, d] : d;
  },

  move: function (p, avoidStatic) {
    if (!avoidStatic || (avoidStatic && this.distanceTo(p) > 1)) {
      this.q.push(p);
    }
  },

  render: function () {
    this._update();
    this._draw();
  }
}


S.ShapeBuilder = (function () {
  var gap = 13,
      shapeCanvas = document.createElement('canvas'),
      shapeContext = shapeCanvas.getContext('2d'),
      fontSize = 500,
      fontFamily = 'Avenir, Helvetica Neue, Helvetica, Arial, sans-serif';

  function fit() {
    shapeCanvas.width = Math.floor(window.innerWidth / gap) * gap;
    shapeCanvas.height = Math.floor(window.innerHeight / gap) * gap;
    shapeContext.fillStyle = 'red';
    shapeContext.textBaseline = 'middle';
    shapeContext.textAlign = 'center';
  }

  function processCanvas() {
    var pixels = shapeContext.getImageData(0, 0, shapeCanvas.width, shapeCanvas.height).data;
        dots = [],
        pixels,
        x = 0,
        y = 0,
        fx = shapeCanvas.width,
        fy = shapeCanvas.height,
        w = 0,
        h = 0;

    for (var p = 0; p < pixels.length; p += (4 * gap)) {
      if (pixels[p + 3] > 0) {
        dots.push(new S.Point({
          x: x,
          y: y
        }));

        w = x > w ? x : w;
        h = y > h ? y : h;
        fx = x < fx ? x : fx;
        fy = y < fy ? y : fy;
      }

      x += gap;

      if (x >= shapeCanvas.width) {
        x = 0;
        y += gap;
        p += gap * 4 * shapeCanvas.width;
      }
    }

    return { dots: dots, w: w + fx, h: h + fy };
  }

  function setFontSize(s) {
    shapeContext.font = 'bold ' + s + 'px ' + fontFamily;
  }

  function isNumber(n) {
    return !isNaN(parseFloat(n)) && isFinite(n);
  }

  function init() {
    fit();
    window.addEventListener('resize', fit);
  }

  // Init
  init();

  return {
    imageFile: function (url, callback) {
      var image = new Image(),
          a = S.Drawing.getArea();

      image.onload = function () {
        shapeContext.clearRect(0, 0, shapeCanvas.width, shapeCanvas.height);
        shapeContext.drawImage(this, 0, 0, a.h * 0.6, a.h * 0.6);
        callback(processCanvas());
      };

      image.onerror = function () {
        callback(S.ShapeBuilder.letter('What?'));
      }

      image.src = url;
    },

    circle: function (d) {
      var r = Math.max(0, d) / 2;
      shapeContext.clearRect(0, 0, shapeCanvas.width, shapeCanvas.height);
      shapeContext.beginPath();
      shapeContext.arc(r * gap, r * gap, r * gap, 0, 2 * Math.PI, false);
      shapeContext.fill();
      shapeContext.closePath();

      return processCanvas();
    },

    letter: function (l) {
      var s = 0;

      setFontSize(fontSize);
      s = Math.min(fontSize,
                  (shapeCanvas.width / shapeContext.measureText(l).width) * 0.8 * fontSize, 
                  (shapeCanvas.height / fontSize) * (isNumber(l) ? 1 : 0.45) * fontSize);
      setFontSize(s);

      shapeContext.clearRect(0, 0, shapeCanvas.width, shapeCanvas.height);
      shapeContext.fillText(l, shapeCanvas.width / 2, shapeCanvas.height / 2);

      return processCanvas();
    },

    rectangle: function (w, h) {
      var dots = [],
          width = gap * w,
          height = gap * h;

      for (var y = 0; y < height; y += gap) {
        for (var x = 0; x < width; x += gap) {
          dots.push(new S.Point({
            x: x,
            y: y,
          }));
        }
      }

      return { dots: dots, w: width, h: height };
    }
  };
}());


S.Shape = (function () {
  var dots = [],
      width = 0,
      height = 0,
      cx = 0,
      cy = 0;

  function compensate() {
    var a = S.Drawing.getArea();

    cx = a.w / 2 - width / 2;
    cy = a.h / 2 - height / 2;
  }

  return {
    shuffleIdle: function () {
      var a = S.Drawing.getArea();

      for (var d = 0; d < dots.length; d++) {
        if (!dots[d].s) {
          dots[d].move({
            x: Math.random() * a.w,
            y: Math.random() * a.h
          });
        }
      }
    },

    switchShape: function (n, fast) {
      var size,
          a = S.Drawing.getArea();

      width = n.w;
      height = n.h;

      compensate();

      if (n.dots.length > dots.length) {
        size = n.dots.length - dots.length;
        for (var d = 1; d <= size; d++) {
          dots.push(new S.Dot(a.w / 2, a.h / 2));
        }
      }

      var d = 0,
          i = 0;

      while (n.dots.length > 0) {
        i = Math.floor(Math.random() * n.dots.length);
        dots[d].e = fast ? 0.25 : (dots[d].s ? 0.14 : 0.11);

        if (dots[d].s) {
          dots[d].move(new S.Point({
            z: Math.random() * 20 + 10,
            a: Math.random(),
            h: 18
          }));
        } else {
          dots[d].move(new S.Point({
            z: Math.random() * 5 + 5,
            h: fast ? 18 : 30
          }));
        }

        dots[d].s = true;
        dots[d].move(new S.Point({
          x: n.dots[i].x + cx,
          y: n.dots[i].y + cy,
          a: 1,
          z: 5,
          h: 0
        }));

        n.dots = n.dots.slice(0, i).concat(n.dots.slice(i + 1));
        d++;
      }

      for (var i = d; i < dots.length; i++) {
        if (dots[i].s) {
          dots[i].move(new S.Point({
            z: Math.random() * 20 + 10,
            a: Math.random(),
            h: 20
          }));

          dots[i].s = false;
          dots[i].e = 0.04;
          dots[i].move(new S.Point({ 
            x: Math.random() * a.w,
            y: Math.random() * a.h,
            a: 0.3, //.4
            z: Math.random() * 4,
            h: 0
          }));
        }
      }
    },

    render: function () {
      for (var d = 0; d < dots.length; d++) {
        dots[d].render();
      }
    }
  }
}());


S.init();

              
            
!
999px

Console