diff --git a/bkcore.coffee/ImageData.coffee b/bkcore.coffee/ImageData.coffee
new file mode 100644
index 0000000..aedf606
--- /dev/null
+++ b/bkcore.coffee/ImageData.coffee
@@ -0,0 +1,141 @@
+###
+  Loads an image and gives access to pixel data.
+  
+  @class bkcore.ImageData
+  @author Thibaut 'BKcore' Despoulain <http://bkcore.com>
+###
+class ImageData
+
+  ###
+    Creates a new ImageData object
+    
+    @param path string The path of the image
+    @param callback function A callback function to be called
+      once th eimage is loaded
+  ###
+  constructor: (path, callback)->
+
+    @image = new Image
+    @pixels = null
+    @canvas = null
+    @loaded = false
+
+    @image.onload = ()=>
+
+      @canvas = document.createElement('canvas')
+      @canvas.width = @image.width
+      @canvas.height = @image.height
+
+      context = @canvas.getContext('2d')
+      context.drawImage(@image, 0, 0)
+
+      @pixels = context.getImageData(0,0, @canvas.width, @canvas.height)
+      @loaded = true
+
+      context = null
+      @canvas = null
+      @image = null
+
+      callback?.call(@)
+
+    @image.crossOrigin = "anonymous"
+    @image.src = path
+
+  ###
+    Gets pixel RGBA data at given index
+    
+    @param x int In pixels
+    @param y int In pixels
+    @return Object{r,g,b,a}
+  ###
+  getPixel: (x, y)->
+
+    if !@pixels? or x < 0 or y < 0 or x >= @pixels.width or y >= @pixels.height
+      return {r: 0, g: 0, b:0, a:0}
+
+    i = (y*@pixels.width + x) * 4
+
+    return {
+      r: @pixels.data[i]
+      g: @pixels.data[i+1]
+      b: @pixels.data[i+2]
+      a: @pixels.data[i+3]
+    }
+
+  ###
+    Gets pixel RGBA data at given float index using bilinear interpolation
+    
+    @param x float In subpixels
+    @param y float In subpixels
+    @return Object{r,g,b,a}
+  ###
+  getPixelBilinear: (fx, fy)->
+
+    x = Math.floor(fx)
+    y = Math.floor(fy)
+    rx = fx - x - .5
+    ry = fy - y - .5
+    ax = Math.abs(rx)
+    ay = Math.abs(ry)
+    dx = if rx < 0 then -1 else 1
+    dy = if ry < 0 then -1 else 1
+
+    c = @getPixel(x, y)
+    cx = @getPixel(x+dx, y)
+    cy = @getPixel(x, y+dy)
+    cxy = @getPixel(x+dx, y+dy)
+
+    cf1 = [
+      (1-ax) * c.r + ax * cx.r
+      (1-ax) * c.g + ax * cx.g
+      (1-ax) * c.b + ax * cx.b
+      (1-ax) * c.a + ax * cx.a
+    ]
+
+    cf2 = [
+      (1-ax) * cy.r + ax * cxy.r
+      (1-ax) * cy.g + ax * cxy.g
+      (1-ax) * cy.b + ax * cxy.b
+      (1-ax) * cy.a + ax * cxy.a
+    ]
+
+    return {
+      r: (1-ay) * cf1[0] + ay * cf2[0]
+      g: (1-ay) * cf1[1] + ay * cf2[1]
+      b: (1-ay) * cf1[2] + ay * cf2[2]
+      a: (1-ay) * cf1[3] + ay * cf2[3]
+    }
+
+  ###
+    Gets pixel data at given index
+    as 3-bytes integer (for floating-point textures erzats, from RGB values)
+    
+    @param x int In pixels
+    @param y int In pixels
+    @return int (R + G*255 + B*255*255)
+  ###
+  getPixelF: (x, y)->
+
+    c = @getPixel(x, y)
+    return c.r + c.g * 255 + c.b * 255 * 255
+
+  ###
+    Gets pixel data at given float index using bilinear interpolationas
+    as 3-bytes integer (for floating-point textures erzats, from RGB values)
+    
+    @param x float In subpixels
+    @param y float In subpixels
+    @return Object{r,g,b,a}
+  ###
+  getPixelFBilinear: (fx, fy)->
+
+    c = @getPixelBilinear(fx, fy)
+    return c.r + c.g * 255 + c.b * 255 * 255
+
+###
+  Exports
+  @package bkcore
+###
+exports = exports ? @
+exports.bkcore ||= {}
+exports.bkcore.ImageData = ImageData
\ No newline at end of file
diff --git a/bkcore.coffee/ImageData.js b/bkcore.coffee/ImageData.js
new file mode 100644
index 0000000..a24ee84
--- /dev/null
+++ b/bkcore.coffee/ImageData.js
@@ -0,0 +1,156 @@
+// Generated by CoffeeScript 1.4.0
+
+/*
+  Loads an image and gives access to pixel data.
+  
+  @class bkcore.ImageData
+  @author Thibaut 'BKcore' Despoulain <http://bkcore.com>
+*/
+
+
+(function() {
+  var ImageData, exports;
+
+  ImageData = (function() {
+    /*
+        Creates a new ImageData object
+        
+        @param path string The path of the image
+        @param callback function A callback function to be called
+          once th eimage is loaded
+    */
+
+    function ImageData(path, callback) {
+      var _this = this;
+      this.image = new Image;
+      this.pixels = null;
+      this.canvas = null;
+      this.loaded = false;
+      this.image.onload = function() {
+        var context;
+        _this.canvas = document.createElement('canvas');
+        _this.canvas.width = _this.image.width;
+        _this.canvas.height = _this.image.height;
+        context = _this.canvas.getContext('2d');
+        context.drawImage(_this.image, 0, 0);
+        _this.pixels = context.getImageData(0, 0, _this.canvas.width, _this.canvas.height);
+        _this.loaded = true;
+        context = null;
+        _this.canvas = null;
+        _this.image = null;
+        return callback != null ? callback.call(_this) : void 0;
+      };
+      this.image.crossOrigin = "anonymous";
+      this.image.src = path;
+    }
+
+    /*
+        Gets pixel RGBA data at given index
+        
+        @param x int In pixels
+        @param y int In pixels
+        @return Object{r,g,b,a}
+    */
+
+
+    ImageData.prototype.getPixel = function(x, y) {
+      var i;
+      if (!(this.pixels != null) || x < 0 || y < 0 || x >= this.pixels.width || y >= this.pixels.height) {
+        return {
+          r: 0,
+          g: 0,
+          b: 0,
+          a: 0
+        };
+      }
+      i = (y * this.pixels.width + x) * 4;
+      return {
+        r: this.pixels.data[i],
+        g: this.pixels.data[i + 1],
+        b: this.pixels.data[i + 2],
+        a: this.pixels.data[i + 3]
+      };
+    };
+
+    /*
+        Gets pixel RGBA data at given float index using bilinear interpolation
+        
+        @param x float In subpixels
+        @param y float In subpixels
+        @return Object{r,g,b,a}
+    */
+
+
+    ImageData.prototype.getPixelBilinear = function(fx, fy) {
+      var ax, ay, c, cf1, cf2, cx, cxy, cy, dx, dy, rx, ry, x, y;
+      x = Math.floor(fx);
+      y = Math.floor(fy);
+      rx = fx - x - .5;
+      ry = fy - y - .5;
+      ax = Math.abs(rx);
+      ay = Math.abs(ry);
+      dx = rx < 0 ? -1 : 1;
+      dy = ry < 0 ? -1 : 1;
+      c = this.getPixel(x, y);
+      cx = this.getPixel(x + dx, y);
+      cy = this.getPixel(x, y + dy);
+      cxy = this.getPixel(x + dx, y + dy);
+      cf1 = [(1 - ax) * c.r + ax * cx.r, (1 - ax) * c.g + ax * cx.g, (1 - ax) * c.b + ax * cx.b, (1 - ax) * c.a + ax * cx.a];
+      cf2 = [(1 - ax) * cy.r + ax * cxy.r, (1 - ax) * cy.g + ax * cxy.g, (1 - ax) * cy.b + ax * cxy.b, (1 - ax) * cy.a + ax * cxy.a];
+      return {
+        r: (1 - ay) * cf1[0] + ay * cf2[0],
+        g: (1 - ay) * cf1[1] + ay * cf2[1],
+        b: (1 - ay) * cf1[2] + ay * cf2[2],
+        a: (1 - ay) * cf1[3] + ay * cf2[3]
+      };
+    };
+
+    /*
+        Gets pixel data at given index
+        as 3-bytes integer (for floating-point textures erzats, from RGB values)
+        
+        @param x int In pixels
+        @param y int In pixels
+        @return int (R + G*255 + B*255*255)
+    */
+
+
+    ImageData.prototype.getPixelF = function(x, y) {
+      var c;
+      c = this.getPixel(x, y);
+      return c.r + c.g * 255 + c.b * 255 * 255;
+    };
+
+    /*
+        Gets pixel data at given float index using bilinear interpolationas
+        as 3-bytes integer (for floating-point textures erzats, from RGB values)
+        
+        @param x float In subpixels
+        @param y float In subpixels
+        @return Object{r,g,b,a}
+    */
+
+
+    ImageData.prototype.getPixelFBilinear = function(fx, fy) {
+      var c;
+      c = this.getPixelBilinear(fx, fy);
+      return c.r + c.g * 255 + c.b * 255 * 255;
+    };
+
+    return ImageData;
+
+  })();
+
+  /*
+    Exports
+    @package bkcore
+  */
+
+
+  exports = exports != null ? exports : this;
+
+  exports.bkcore || (exports.bkcore = {});
+
+  exports.bkcore.ImageData = ImageData;
+
+}).call(this);
diff --git a/bkcore.coffee/Timer.coffee b/bkcore.coffee/Timer.coffee
index 7d5da39..d978bae 100644
--- a/bkcore.coffee/Timer.coffee
+++ b/bkcore.coffee/Timer.coffee
@@ -1,5 +1,15 @@
+###
+ new Date().getTime() wrapper to use as timer.
+
+ @class bkcore.Timer
+ @author Thibaut 'BKcore' Despoulain <http://bkcore.com>
+###
 class Timer
 
+  ###
+    Creates a new timer, inactive by default.
+    Call Timer.start() to activate.
+  ###
   constructor: ()->
 
     @time =
@@ -11,6 +21,9 @@ class Timer
 
     @active = false
 
+  ###
+    Starts/restarts the timer.
+  ###
   start: ()->
 
     now = (new Date).getTime()
@@ -23,13 +36,21 @@ class Timer
 
     @active = true
 
+  ###
+    Pauses(true)/Unpauses(false) the timer.
+
+    @param bool Do pause
+  ###
   pause: (doPause)->
 
     @active = not doPause
 
+  ###
+    Update method to be called inside a RAF loop
+  ###
   update: ()->
 
-    if not active then return
+    if not @active then return
 
     now = (new Date).getTime()
 
@@ -38,10 +59,19 @@ class Timer
     @time.delta = now - @time.previous
     @time.previous = now
 
+  ###
+    Returns a formatted version of the current elapsed time using msToTime().
+  ###
   getElapsedTime: ()->
 
     return @constructor.msToTime(@time.elapsed)
 
+  ###
+    Formats a millisecond integer into a h/m/s/ms object
+    
+    @param x int In milliseconds
+    @return Object{h,m,s,ms}
+  ###
   @msToTime: (t)->
 
     ms = t%1000
@@ -51,6 +81,12 @@ class Timer
 
     return {h:h, m:m, s:s, ms,ms}
 
+  ###
+    Formats a millisecond integer into a h/m/s/ms object with prefix zeros
+    
+    @param x int In milliseconds
+    @return Object<string>{h,m,s,ms}
+  ###
   @msToTimeString: (t)->
 
     time = @msToTime(t)
@@ -62,10 +98,21 @@ class Timer
 
     return time
 
+  ###
+    Convert given integer to string and fill with heading zeros
+
+    @param num int Number to convert/fill
+    @param size int Desired string size
+  ###
   @zfill: (num, size)->
 
     len = size - num.toString().length
     return if len > 0 then new Array(len+1).join('0') + num else num.toString()
 
+###
+  Exports
+  @package bkcore
+###
 exports = exports ? @
+exports.bkcore ||= {}
 exports.bkcore.Timer = Timer
\ No newline at end of file
diff --git a/bkcore.coffee/Timer.js b/bkcore.coffee/Timer.js
index b2b4b63..1de825b 100644
--- a/bkcore.coffee/Timer.js
+++ b/bkcore.coffee/Timer.js
@@ -1,8 +1,21 @@
 // Generated by CoffeeScript 1.4.0
+
+/*
+ new Date().getTime() wrapper to use as timer.
+
+ @class bkcore.Timer
+ @author Thibaut 'BKcore' Despoulain <http://bkcore.com>
+*/
+
+
 (function() {
   var Timer, exports;
 
   Timer = (function() {
+    /*
+        Creates a new timer, inactive by default.
+        Call Timer.start() to activate.
+    */
 
     function Timer() {
       this.time = {
@@ -15,6 +28,11 @@
       this.active = false;
     }
 
+    /*
+        Starts/restarts the timer.
+    */
+
+
     Timer.prototype.start = function() {
       var now;
       now = (new Date).getTime();
@@ -26,13 +44,25 @@
       return this.active = true;
     };
 
+    /*
+        Pauses(true)/Unpauses(false) the timer.
+    
+        @param bool Do pause
+    */
+
+
     Timer.prototype.pause = function(doPause) {
       return this.active = !doPause;
     };
 
+    /*
+        Update method to be called inside a RAF loop
+    */
+
+
     Timer.prototype.update = function() {
       var now;
-      if (!active) {
+      if (!this.active) {
         return;
       }
       now = (new Date).getTime();
@@ -42,10 +72,23 @@
       return this.time.previous = now;
     };
 
+    /*
+        Returns a formatted version of the current elapsed time using msToTime().
+    */
+
+
     Timer.prototype.getElapsedTime = function() {
       return this.constructor.msToTime(this.time.elapsed);
     };
 
+    /*
+        Formats a millisecond integer into a h/m/s/ms object
+        
+        @param x int In milliseconds
+        @return Object{h,m,s,ms}
+    */
+
+
     Timer.msToTime = function(t) {
       var h, m, ms, s;
       ms = t % 1000;
@@ -61,6 +104,14 @@
       };
     };
 
+    /*
+        Formats a millisecond integer into a h/m/s/ms object with prefix zeros
+        
+        @param x int In milliseconds
+        @return Object<string>{h,m,s,ms}
+    */
+
+
     Timer.msToTimeString = function(t) {
       var time;
       time = this.msToTime(t);
@@ -71,6 +122,14 @@
       return time;
     };
 
+    /*
+        Convert given integer to string and fill with heading zeros
+    
+        @param num int Number to convert/fill
+        @param size int Desired string size
+    */
+
+
     Timer.zfill = function(num, size) {
       var len;
       len = size - num.toString().length;
@@ -85,8 +144,16 @@
 
   })();
 
+  /*
+    Exports
+    @package bkcore
+  */
+
+
   exports = exports != null ? exports : this;
 
+  exports.bkcore || (exports.bkcore = {});
+
   exports.bkcore.Timer = Timer;
 
 }).call(this);
diff --git a/bkcore.coffee/tests.html b/bkcore.coffee/tests.html
new file mode 100644
index 0000000..43f8204
--- /dev/null
+++ b/bkcore.coffee/tests.html
@@ -0,0 +1,10 @@
+<html>
+	<head>
+		<title>CoffeeScript Tests</title>
+	</head>
+	<body>
+		<script src="Timer.js"></script>
+		<script src="ImageData.js"></script>
+		<script src="../libs/Three.r53.js"></script>	
+	</body>
+</html>
\ No newline at end of file