Added pointer and tweaked the code

modified:   css/reveal.css
modified:   css/reveal.min.css
modified:   plugin/leap/leap.js

css/reveal.css

@@ -1605,3 +1605,12 @@ body {
 }
 
 
+/*********************************************
+ * LEAP PLUGIN
+ *********************************************/
+
+#leap {
+  position: absolute; 
+  z-index: 50;
+  visibility: hidden;
+}

css/reveal.min.css

@@ -5,3 +5,9 @@
  *
  * Copyright (C) 2013 Hakim El Hattab, http://hakim.se
  */ html,body,.reveal div,.reveal span,.reveal applet,.reveal object,.reveal iframe,.reveal h1,.reveal h2,.reveal h3,.reveal h4,.reveal h5,.reveal h6,.reveal p,.reveal blockquote,.reveal pre,.reveal a,.reveal abbr,.reveal acronym,.reveal address,.reveal big,.reveal cite,.reveal code,.reveal del,.reveal dfn,.reveal em,.reveal img,.reveal ins,.reveal kbd,.reveal q,.reveal s,.reveal samp,.reveal small,.reveal strike,.reveal strong,.reveal sub,.reveal sup,.reveal tt,.reveal var,.reveal b,.reveal u,.reveal i,.reveal center,.reveal dl,.reveal dt,.reveal dd,.reveal ol,.reveal ul,.reveal li,.reveal fieldset,.reveal form,.reveal label,.reveal legend,.reveal table,.reveal caption,.reveal tbody,.reveal tfoot,.reveal thead,.reveal tr,.reveal th,.reveal td,.reveal article,.reveal aside,.reveal canvas,.reveal details,.reveal embed,.reveal figure,.reveal figcaption,.reveal footer,.reveal header,.reveal hgroup,.reveal menu,.reveal nav,.reveal output,.reveal ruby,.reveal section,.reveal summary,.reveal time,.reveal mark,.reveal audio,video{margin:0;padding:0;border:0;font-size:100%;font:inherit;vertical-align:baseline}.reveal article,.reveal aside,.reveal details,.reveal figcaption,.reveal figure,.reveal footer,.reveal header,.reveal hgroup,.reveal menu,.reveal nav,.reveal section{display:block}html,body{width:100%;height:100%;overflow:hidden}body{position:relative;line-height:1}::selection{background:#FF5E99;color:#fff;text-shadow:none}.reveal h1,.reveal h2,.reveal h3,.reveal h4,.reveal h5,.reveal h6{-webkit-hyphens:auto;-moz-hyphens:auto;hyphens:auto;word-wrap:break-word;line-height:1}.reveal h1{font-size:3.77em}.reveal h2{font-size:2.11em}.reveal h3{font-size:1.55em}.reveal h4{font-size:1em}.reveal .slides section .fragment{opacity:0;-webkit-transition:all .2s ease;-moz-transition:all .2s ease;-ms-transition:all .2s ease;-o-transition:all .2s ease;transition:all .2s ease}.reveal .slides section .fragment.visible{opacity:1}.reveal .slides section .fragment.grow{opacity:1}.reveal .slides section .fragment.grow.visible{-webkit-transform:scale(1.3);-moz-transform:scale(1.3);-ms-transform:scale(1.3);-o-transform:scale(1.3);transform:scale(1.3)}.reveal .slides section .fragment.shrink{opacity:1}.reveal .slides section .fragment.shrink.visible{-webkit-transform:scale(0.7);-moz-transform:scale(0.7);-ms-transform:scale(0.7);-o-transform:scale(0.7);transform:scale(0.7)}.reveal .slides section .fragment.zoom-in{opacity:0;-webkit-transform:scale(0.1);-moz-transform:scale(0.1);-ms-transform:scale(0.1);-o-transform:scale(0.1);transform:scale(0.1)}.reveal .slides section .fragment.zoom-in.visible{opacity:1;-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1)}.reveal .slides section .fragment.roll-in{opacity:0;-webkit-transform:rotateX(90deg);-moz-transform:rotateX(90deg);-ms-transform:rotateX(90deg);-o-transform:rotateX(90deg);transform:rotateX(90deg)}.reveal .slides section .fragment.roll-in.visible{opacity:1;-webkit-transform:rotateX(0);-moz-transform:rotateX(0);-ms-transform:rotateX(0);-o-transform:rotateX(0);transform:rotateX(0)}.reveal .slides section .fragment.fade-out{opacity:1}.reveal .slides section .fragment.fade-out.visible{opacity:0}.reveal .slides section .fragment.semi-fade-out{opacity:1}.reveal .slides section .fragment.semi-fade-out.visible{opacity:.5}.reveal .slides section .fragment.highlight-red,.reveal .slides section .fragment.highlight-green,.reveal .slides section .fragment.highlight-blue{opacity:1}.reveal .slides section .fragment.highlight-red.visible{color:#ff2c2d}.reveal .slides section .fragment.highlight-green.visible{color:#17ff2e}.reveal .slides section .fragment.highlight-blue.visible{color:#1b91ff}.reveal:after{content:'';font-style:italic}.reveal img,.reveal video,.reveal iframe{max-width:95%;max-height:95%}.reveal a{position:relative}.reveal strong,.reveal b{font-weight:700}.reveal em,.reveal i{font-style:italic}.reveal ol,.reveal ul{display:inline-block;text-align:left;margin:0 0 0 1em}.reveal ol{list-style-type:decimal}.reveal ul{list-style-type:disc}.reveal ul ul{list-style-type:square}.reveal ul ul ul{list-style-type:circle}.reveal ul ul,.reveal ul ol,.reveal ol ol,.reveal ol ul{display:block;margin-left:40px}.reveal p{margin-bottom:10px;line-height:1.2em}.reveal q,.reveal blockquote{quotes:none}.reveal blockquote{display:block;position:relative;width:70%;margin:5px auto;padding:5px;font-style:italic;background:rgba(255,255,255,.05);box-shadow:0 0 2px rgba(0,0,0,.2)}.reveal blockquote p:first-child,.reveal blockquote p:last-child{display:inline-block}.reveal q{font-style:italic}.reveal pre{display:block;position:relative;width:90%;margin:15px auto;text-align:left;font-size:.55em;font-family:monospace;line-height:1.2em;word-wrap:break-word;box-shadow:0 0 6px rgba(0,0,0,.3)}.reveal code{font-family:monospace}.reveal pre code{padding:5px;overflow:auto;max-height:400px;word-wrap:normal}.reveal table th,.reveal table td{text-align:left;paddLine truncated
+
+ #leap {
+  position: absolute; 
+  z-index: 50;
+  visibility: hidden;
+}

plugin/leap/leap.js

@@ -22,27 +22,75 @@ var b=right.criteria;if(a!==b){if(a>b||a===void 0)return 1;if(a<b||b===void 0)re
 
 (function () {
   var controller  = new Leap.Controller({enableGestures: true}),
-      config      = Reveal.getConfig().leap ||
+      leapConfig  = Reveal.getConfig().leap,
-        {
+      leapDOM     = document.createElement('div'),
-          naturalSwipe: true
+      body        = document.body,
+      config      = {
+        naturalSwipe   : true,
+        pointerDefault : 15,
+        pointerColor   : '#00aaff',
+        pointerOpacity : 0.75
       };
 
+      // Merge user defined settings with defaults
+      if ( leapConfig ) {
+        for (key in leapConfig) {
+          config[key] = leapConfig[key];
+        }
+      }
+
+      leapDOM.id = 'leap';
+
+      leapDOM.style.filter          = 'alpha(opacity="'+ config.pointerOpacity +'")';
+      leapDOM.style.opacity         = config.pointerOpacity;
+      leapDOM.style.backgroundColor = config.pointerColor;
+
+      body.appendChild(leapDOM);
+
   controller.on('frame', function (frame) {
 
+    // Pointer code
+    if ( frame.hands.length === 1 && frame.fingers.length === 1 ) {
+      var size  =  -2 * frame.hands[0].palmPosition[2];
+
+      if ( size < config.pointerDefault ) {
+        size = config.pointerDefault
+      }
+
+      leapDOM.style.bottom =
+        frame.hands[0].palmPosition[1] * (body.offsetHeight / 100) - body.offsetHeight + 'px';
+
+      leapDOM.style.left =
+        frame.hands[0].palmPosition[0] * (body.offsetWidth / 100) + (body.offsetWidth / 2) + 'px';
+
+      leapDOM.style.visibility   = 'visible';
+      leapDOM.style.width        = size     + 'px';
+      leapDOM.style.height       = size     + 'px';
+      leapDOM.style.borderRadius = size - 5 + 'px';
+    } else {
+      // Hide pointer on exit
+      leapDOM.style.visibility = 'hidden';
+    }
+    
+    // Gestures
     if ( frame.gestures.length > 0 ) {
-      var gesture = frame.gestures[0],
+      var gesture = frame.gestures[0];
-          x       = gesture.direction[0],
+
+      // One hand gestures
+      if( frame.hands.length === 1 ) {
+        // Swipe gestures. 2+ fingers.
+        if ( frame.fingers.length > 1 && gesture.speed > 1000 && gesture.state === 'start' && gesture.type === 'swipe' ) {
+          var x = gesture.direction[0],
               y = gesture.direction[1];
 
-      
+          // Left/right swipe gestures
-      if ( gesture.speed > 1000 && gesture.state === 'start' && gesture.type === 'swipe' ) {
-        if( frame.hands.length === 1 && frame.fingers.length > 1 ) {
           if ( Math.abs(x) > Math.abs(y) ) {
             if ( x > 0 ) {
               config.naturalSwipe ? Reveal.left() : Reveal.right();
             } else {
               config.naturalSwipe ? Reveal.right() : Reveal.left();
             }
+          // Up/down swipe gestures
           } else {
             if ( y > 0 ) {
               config.naturalSwipe ? Reveal.down() : Reveal.up();
@@ -50,10 +98,12 @@ var b=right.criteria;if(a!==b){if(a>b||a===void 0)return 1;if(a<b||b===void 0)re
               config.naturalSwipe ? Reveal.up() : Reveal.down();
             }
           }
-        } else if( frame.hands.length == 2 ) {
-          if ( y > 0 ) {
-            Reveal.toggleOverview();
         }
+        // Two hand gestures
+      } else if( frame.hands.length == 2 ) {
+        // All upwards 2 hand gestures = toggle overview
+        if ( gesture.direction[1] > 0 ) {
+          Reveal.toggleOverview();
         }
       }
     }