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CSS

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JavaScript

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HTML 

              
                <div id="container">
  <p>a</p>
  <canvas id="text" width="700 height="100"></canvas>
</div>
!

CSS 

              
                @import url(https://fonts.googleapis.com/css?family=Montserrat:700);

body {
  background: #555;
  height: 100%;
}

p {
  color: #555;
}

* {
  font-family: Montserrat;
  font-weight: 700;
}

#container {
  position: relative;  
  width: 100%;
  height: 100%;
}

canvas {
  left: 50%;
  top: 20px;
  margin-left: -350px;
  position: absolute;
  display: block;
}
!

JS 

              
                (function(){
    var stage, textStage, textCTX, form, input;
    var hair = [], textPixels, textFormed;
    var offsetX, offsetY, text, renderer;
    var hairBitmaps = ['https://s3-us-west-2.amazonaws.com/s.cdpn.io/53148/hair.png', 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/53148/hair1.png', 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/53148/hair2.png', 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/53148/hair3.png', 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/53148/hair4.png', 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/53148/hair5.png', 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/53148/hair6.png'];
    var _mousePos = {x: 0, y: 0};

    function init() {
        initStages();
        initText();
        addListeners();
        resize();
        setTimeout(function() {
          createText('CODEPEN');
          animate();
        }, 200);
    }

    // Init Canvas
    function initStages() {
        textStage = document.getElementById("text");
        textStage.width = 700;
        textStage.height = 200;
        textStage.style.left = offsetX+'px';
        textStage.style.top = offsetY+'px';
        textCTX = textStage.getContext('2d');
        var rendererOptions = {
            transparent:true,
        }
        stage = new PIXI.Stage(0x66FF99);
        renderer = PIXI.autoDetectRenderer(700, 200, rendererOptions);
        document.getElementById('container').appendChild(renderer.view);
    }


    function initText() {
        textCTX.font = "700 80px 'Montserrat'";
        textCTX.fillStyle = '#555';
        textCTX.fillText("t", 350, 150);
        textCTX.textAlign = 'center';
    }

    function createHair(x, y) {
      var bitmap;
      if (x < 130) bitmap = 0;
      else if (x < 230) bitmap = 1;
      else if (x < 330) bitmap = 2;
      else if (x < 410) bitmap = 3;
      else if (x < 480) bitmap = 4;
      else if (x < 570) bitmap = 5;
      else bitmap = 6;
      
      var texture = PIXI.Texture.fromImage(hairBitmaps[bitmap]);
      // create a new Sprite using the texture
      var hairBit = new PIXI.Sprite(texture);

      // center the sprites anchor point
      hairBit.anchor.x = 0.1;
      hairBit.anchor.y = 0.1;
      hairBit.width = 30;
      hairBit.height = 30;
      hairBit.targetAngle = 0;
      hairBit.rotation = 0;
      
      // move the sprite t the center of the screen
      hairBit.position.x = x;
      hairBit.position.y = y;

      stage.addChild(hairBit);
      hair.push(hairBit);
      randomize(hairBit);
    }
  
    function randomize(bit) {
      bit.targetAngle = (bit.rotationAngle || 0) + (-0.2 + Math.random()*0.4);
      setTimeout(function() {
        randomize(bit);
      }, 100+Math.random()*200);
    }
  
    // animating circles
    function animate() {
        var l = hair.length;
        for(var i = 0; i < l; i++) {
          hair[i].rotationAngle = Math.atan2(hair[i].position.y - _mousePos.y, hair[i].position.x - _mousePos.x);
          hair[i].rotation += (hair[i].targetAngle - hair[i].rotation)*0.05;
        }
      
        renderer.render(stage); 
        requestAnimationFrame(animate);
    }

    function formText() {
        for(var i= 0, l=textPixels.length; i<l; i++) {
            createHair(textPixels[i].x, textPixels[i].y) 
        }
        textFormed = true;
        
    }


    // event handlers
    function addListeners() {
        window.addEventListener('resize', resize); 
        window.addEventListener('mousemove', function(e) {
          _mousePos.x = e.pageX - offsetX;
          _mousePos.y = e.pageY - offsetY;
        })
    }
  
    function resize() {
        offsetX = (window.innerWidth - 700)/2;
        offsetY = 20;
        textStage.style.left = offsetX+'px';
        textStage.style.top = offsetY+'px';
    }

    function createText(t) {
        var fontSize = 840/(t.length);
        
        if (fontSize > 160) fontSize = 160;
        textCTX.clearRect(0,0,700,200);
        textCTX.font = "400 "+fontSize+"px 'Montserrat'";
        textCTX.textAlign = 'center';
        textCTX.textBaseline = 'top';
        textCTX.fillText(t, 350, (172-fontSize)/2);
      
        var ctx = document.getElementById('text').getContext('2d');
        var pix = ctx.getImageData(0,0,700,200).data;
        textPixels = [];
        for (var i = pix.length; i >= 0; i -= 4) {
            if (pix[i] != 0) {
                var x = (i / 4) % 700;
                var y = Math.floor(Math.floor(i/700)/4);

                if((x && x%4 == 0) && (y && y%4 == 0)) textPixels.push({x: x, y: y});
            }
        }

        formText();

    }

    window.onload = function() { init() };
})();
!
999px

Console