tboerger · April 8, 2014 15:36 · Apr 8, 2014
diff --git a/Direction-aware-3D-hover-effect.markdown b/Direction-aware-3D-hover-effect.markdown
@@ -0,0 +1,9 @@
+Direction-aware 3D hover effect
+-------------------------------
+After seeing this site http://fitzfitzpatrick.com/ I decided to give a try to the  "direction-aware hover effect". My first thought was to do it with a pure CSS, not too late I changed my mind and decided to use JS (I need to sleep anyway).
+
+It's kind of simple, using JS we can easily detect the direction the cursor is coming, then, I am using CSS animations for each case (8 in total).
+
+A [Pen](http://codepen.io/noeldelgado/pen/pGwFx) by [Noel Delgado](http://codepen.io/noeldelgado) on [CodePen](http://codepen.io/).
+
+[License](http://codepen.io/noeldelgado/pen/pGwFx/license).
diff --git a/index.haml b/index.haml
@@ -0,0 +1,15 @@
+%header
+  .container
+    %h1 Direction-aware hover effect
+    %p CSS &amp; bits of JS
+.container
+  %ul
+    - 12.times do
+      %li
+        %a{:href => "#", :class => "normal"}
+          %svg{:viewBox => "0 0 80 76", :x => "0px", :y => "0px"}
+            %g
+              %path{:d => "M 68.9708 24.8623 L 60.4554 2.3018 C 59.9641 0.7017 58.1628 -0.2583 56.5252 0.3817 L 1.9822 20.2222 C 0.3822 20.7022 -0.4179 22.6222 0.2222 24.2223 L 8.8624 47.7797 L 8.8624 35.1484 C 8.8624 29.5024 13.3425 24.8623 18.8857 24.8623 L 32.9442 24.8623 L 50.63 12.862 L 60.7829 24.8623 L 68.9708 24.8623 L 68.9708 24.8623 ZM 77.098 32.0625 L 18.8857 32.0625 C 17.2512 32.0625 16.0625 33.4511 16.0625 35.1484 L 16.0625 72.8491 C 16.0625 74.5477 17.2512 75.9375 18.8857 75.9375 L 77.098 75.9375 C 78.742 75.9375 79.9376 74.5477 79.9376 72.8491 L 79.9376 35.1484 C 79.9376 33.4511 78.742 32.0625 77.098 32.0625 L 77.098 32.0625 ZM 73.0626 68.0625 L 23.9375 68.0625 L 23.9375 61.0852 L 31.4704 43.7232 L 42.7696 57.6777 L 53.4138 46.8062 L 67.1695 41.9375 L 73.0626 55.0815 L 73.0626 68.0625 L 73.0626 68.0625 Z"}
+        .info
+          %h3 Single-origin coffee whatever
+          %p Williamsburg tofu polaroid, 90's Bushwick irony locavore ethnic meh messenger bag Truffaut jean shorts.
diff --git a/script.js b/script.js
@@ -0,0 +1,44 @@
+
+
+// - Noel Delgado | @pixelia_me
+
+
+var nodes  = document.querySelectorAll('li'),
+    _nodes = [].slice.call(nodes, 0);
+
+var getDirection = function (ev, obj) {
+    var w = obj.offsetWidth,
+        h = obj.offsetHeight,
+        x = (ev.pageX - obj.offsetLeft - (w / 2) * (w > h ? (h / w) : 1)),
+        y = (ev.pageY - obj.offsetTop - (h / 2) * (h > w ? (w / h) : 1)),
+        d = Math.round( Math.atan2(y, x) / 1.57079633 + 5 ) % 4;
+
+    return d;
+};
+
+var addClass = function ( ev, obj, state ) {
+    var direction = getDirection( ev, obj ),
+        class_suffix = "";
+
+    obj.className = "";
+
+    switch ( direction ) {
+        case 0 : class_suffix = '-top';    break;
+        case 1 : class_suffix = '-right';  break;
+        case 2 : class_suffix = '-bottom'; break;
+        case 3 : class_suffix = '-left';   break;
+    }
+
+    obj.classList.add( state + class_suffix );
+};
+
+// bind events
+_nodes.forEach(function (el) {
+    el.addEventListener('mouseover', function (ev) {
+        addClass( ev, this, 'in' );
+    }, false);
+
+    el.addEventListener('mouseout', function (ev) {
+        addClass( ev, this, 'out' );
+    }, false);
+});
diff --git a/style.scss b/style.scss
@@ -0,0 +1,171 @@
+@import "compass";
+@import url(http://fonts.googleapis.com/css?family=Bree+Serif);
+
+$w: 200;
+$h: 180;
+$duration: 300ms;
+$timing-fn: ease;
+
+$turquoise: #1ABC9C;
+$wet-asphalt: #34495E;
+$midnight-blue: #2C3E50;
+$clouds: #ECF0F1;
+
+* {box-sizing: border-box}
+
+body {background-color: #fff}
+
+h1 {
+  margin: 0 auto 5px;
+  text-align: center;
+}
+
+h3 {font-family: 'Bree Serif', serif}
+
+.container {
+  width: 840px;
+  margin: 0 auto;
+}
+
+header {
+  font-family: 'Bree Serif', serif;
+  text-align: center;
+  margin: 50px 0 25px;
+  color: $wet-asphalt;
+  p {
+    margin: 0;
+    color: transparentize($wet-asphalt, .6);
+  }
+}
+
+ul {
+  padding: 0;
+  margin: 0 0 50px;
+  &:after {
+    content: ".";
+    display: block;
+    clear: both;
+    visibility: hidden;
+    line-height: 0;
+    height: 0;
+  }
+}
+
+li {
+  position: relative;
+  overflow: hidden;
+  border-radius: 4px;
+  list-style: none;
+  float: left;
+  width: #{$w}px;
+  height: #{$h}px;
+  margin: 5px;
+  padding: 0;
+  perspective: 500px;
+  a  {
+    display: inline-block;
+    vertical-align: top;
+    text-decoration: none;
+    border-radius: 4px;
+  }
+  h3 {
+    margin: 0;
+    font-size: 16px;
+    color: transparentize(#fff, .1);
+  }
+  p  {
+    font-size: 12px;
+    line-height: 1.5;
+    color: transparentize(#fff, .2);
+  }
+  .normal {
+    width: 100%;
+    height: 100%;
+    background-color: $clouds;
+    color: transparentize($wet-asphalt, .4);
+    box-shadow: inset 0 2px 20px darken($clouds, 2);
+    text-align: center;
+    font-size: 50px;
+    line-height: #{$h}px;
+    svg {
+      pointer-events: none;
+      width: 50px;
+      path {
+        fill: transparentize($wet-asphalt, .8);
+      }
+    }
+  }
+  .info {
+    width: 100%;
+    height: 100%;
+    padding: 20px;
+    position: absolute;
+    top: 0;
+    left: 0;
+    overflow: hidden;
+    border-radius: 4px;
+    pointer-events: none;
+    background-color: transparentize($turquoise, .1);
+    transform: rotate3d(1, 0, 0, 90deg);
+  }
+}
+
+.in-top .info {
+   transform-origin: 50% 0%;
+   animation: in-top $duration $timing-fn 0ms 1 forwards;
+}
+.in-right .info {
+  transform-origin: 100% 0%;
+  animation: in-right $duration $timing-fn 0ms 1 forwards;
+}
+.in-bottom .info {
+  transform-origin: 50% 100%;
+  animation: in-bottom $duration $timing-fn 0ms 1 forwards;
+}
+.in-left .info {
+  transform-origin: 0% 0%;
+  animation: in-left $duration $timing-fn 0ms 1 forwards;
+}
+
+.out-top .info {
+  transform-origin: 50% 0%;
+  animation: out-top $duration $timing-fn 0ms 1 forwards;
+}
+.out-right .info {
+  transform-origin: 100% 50%;
+  animation: out-right $duration $timing-fn 0ms 1 forwards;
+}
+.out-bottom .info {
+  transform-origin: 50% 100%;
+  animation: out-bottom $duration $timing-fn 0ms 1 forwards;
+}
+.out-left .info {
+  transform-origin: 0% 0%;
+  animation: out-left $duration $timing-fn 0ms 1 forwards;
+}
+
+@keyframes in-top {
+  from {transform: rotate3d(-1, 0, 0, 90deg);}
+  to   {transform: rotate3d(0, 0, 0, 0deg);}}
+@keyframes in-right {
+  from {transform: rotate3d(0, -1, 0, 90deg);}
+  to   {transform: rotate3d(0, 0, 0, 0deg);}}
+@keyframes in-bottom {
+  from {transform: rotate3d(1, 0, 0, 90deg);}
+  to   {transform: rotate3d(0, 0, 0, 0deg);}}
+@keyframes in-left {
+  from {transform: rotate3d(0, 1, 0, 90deg);}
+  to   {transform: rotate3d(0, 0, 0, 0deg);}}
+
+@keyframes out-top {
+  from {transform: rotate3d(0, 0, 0, 0deg);}
+  to   {transform: rotate3d(-1, 0, 0, 102deg);}}
+@keyframes out-right {
+  from {transform: rotate3d(0, 0, 0, 0deg);}
+  to   {transform: rotate3d(0, -1, 0, 102deg);}}
+@keyframes out-bottom {
+  from {transform: rotate3d(0, 0, 0, 0deg);}
+  to   {transform: rotate3d(1, 0, 0, 101deg);}}
+@keyframes out-left {
+  from {transform: rotate3d(0, 0, 0, 0deg);}
+  to   {transform: rotate3d(0, 1, 0, 102deg);}}