p2.renderer.js

/**
 * @license
 * pixi.js - v1.4.2
 * Copyright (c) 2012, Mat Groves
 * http://goodboydigital.com/
 *
 * Compiled: 2014-01-15
 *
 * pixi.js is licensed under the MIT License.
 * http://www.opensource.org/licenses/mit-license.php
 */
/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

(function(){

    var root = this;

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * @module PIXI
 */
var PIXI = PIXI || {};

PIXI.WEBGL_RENDERER = 0;
PIXI.CANVAS_RENDERER = 1;

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * The Point object represents a location in a two-dimensional coordinate system, where x represents the horizontal axis and y represents the vertical axis.
 *
 * @class Point
 * @constructor
 * @param x {Number} position of the point
 * @param y {Number} position of the point
 */
PIXI.Point = function(x, y)
{
    /**
     * @property x
     * @type Number
     * @default 0
     */
    this.x = x || 0;

    /**
     * @property y
     * @type Number
     * @default 0
     */
    this.y = y || 0;
};

/**
 * Creates a clone of this point
 *
 * @method clone
 * @return {Point} a copy of the point
 */
PIXI.Point.prototype.clone = function()
{
    return new PIXI.Point(this.x, this.y);
};

// constructor
PIXI.Point.prototype.constructor = PIXI.Point;


/**
 * @author Mat Groves http://matgroves.com/
 */

/**
 * the Rectangle object is an area defined by its position, as indicated by its top-left corner point (x, y) and by its width and its height.
 *
 * @class Rectangle
 * @constructor
 * @param x {Number} The X coord of the upper-left corner of the rectangle
 * @param y {Number} The Y coord of the upper-left corner of the rectangle
 * @param width {Number} The overall width of this rectangle
 * @param height {Number} The overall height of this rectangle
 */
PIXI.Rectangle = function(x, y, width, height)
{
    /**
     * @property x
     * @type Number
     * @default 0
     */
    this.x = x || 0;

    /**
     * @property y
     * @type Number
     * @default 0
     */
    this.y = y || 0;

    /**
     * @property width
     * @type Number
     * @default 0
     */
    this.width = width || 0;

    /**
     * @property height
     * @type Number
     * @default 0
     */
    this.height = height || 0;
};

/**
 * Creates a clone of this Rectangle
 *
 * @method clone
 * @return {Rectangle} a copy of the rectangle
 */
PIXI.Rectangle.prototype.clone = function()
{
    return new PIXI.Rectangle(this.x, this.y, this.width, this.height);
};

/**
 * Checks if the x, and y coords passed to this function are contained within this Rectangle
 *
 * @method contains
 * @param x {Number} The X coord of the point to test
 * @param y {Number} The Y coord of the point to test
 * @return {Boolean} if the x/y coords are within this Rectangle
 */
PIXI.Rectangle.prototype.contains = function(x, y)
{
    if(this.width <= 0 || this.height <= 0)
        return false;

    var x1 = this.x;
    if(x >= x1 && x <= x1 + this.width)
    {
        var y1 = this.y;

        if(y >= y1 && y <= y1 + this.height)
        {
            return true;
        }
    }

    return false;
};

// constructor
PIXI.Rectangle.prototype.constructor = PIXI.Rectangle;


/**
 * @author Adrien Brault <adrien.brault@gmail.com>
 */

/**
 * @class Polygon
 * @constructor
 * @param points* {Array<Point>|Array<Number>|Point...|Number...} This can be an array of Points that form the polygon,
 *      a flat array of numbers that will be interpreted as [x,y, x,y, ...], or the arguments passed can be
 *      all the points of the polygon e.g. `new PIXI.Polygon(new PIXI.Point(), new PIXI.Point(), ...)`, or the
 *      arguments passed can be flat x,y values e.g. `new PIXI.Polygon(x,y, x,y, x,y, ...)` where `x` and `y` are
 *      Numbers.
 */
PIXI.Polygon = function(points)
{
    //if points isn't an array, use arguments as the array
    if(!(points instanceof Array))
        points = Array.prototype.slice.call(arguments);

    //if this is a flat array of numbers, convert it to points
    if(typeof points[0] === 'number') {
        var p = [];
        for(var i = 0, il = points.length; i < il; i+=2) {
            p.push(
                new PIXI.Point(points[i], points[i + 1])
            );
        }

        points = p;
    }

    this.points = points;
};

/**
 * Creates a clone of this polygon
 *
 * @method clone
 * @return {Polygon} a copy of the polygon
 */
PIXI.Polygon.prototype.clone = function()
{
    var points = [];
    for (var i=0; i<this.points.length; i++) {
        points.push(this.points[i].clone());
    }

    return new PIXI.Polygon(points);
};

/**
 * Checks if the x, and y coords passed to this function are contained within this polygon
 *
 * @method contains
 * @param x {Number} The X coord of the point to test
 * @param y {Number} The Y coord of the point to test
 * @return {Boolean} if the x/y coords are within this polygon
 */
PIXI.Polygon.prototype.contains = function(x, y)
{
    var inside = false;

    // use some raycasting to test hits
    // https://github.com/substack/point-in-polygon/blob/master/index.js
    for(var i = 0, j = this.points.length - 1; i < this.points.length; j = i++) {
        var xi = this.points[i].x, yi = this.points[i].y,
            xj = this.points[j].x, yj = this.points[j].y,
            intersect = ((yi > y) !== (yj > y)) && (x < (xj - xi) * (y - yi) / (yj - yi) + xi);

        if(intersect) inside = !inside;
    }

    return inside;
};

// constructor
PIXI.Polygon.prototype.constructor = PIXI.Polygon;

/**
 * @author Chad Engler <chad@pantherdev.com>
 */

/**
 * The Circle object can be used to specify a hit area for displayobjects
 *
 * @class Circle
 * @constructor
 * @param x {Number} The X coord of the upper-left corner of the framing rectangle of this circle
 * @param y {Number} The Y coord of the upper-left corner of the framing rectangle of this circle
 * @param radius {Number} The radius of the circle
 */
PIXI.Circle = function(x, y, radius)
{
    /**
     * @property x
     * @type Number
     * @default 0
     */
    this.x = x || 0;

    /**
     * @property y
     * @type Number
     * @default 0
     */
    this.y = y || 0;

    /**
     * @property radius
     * @type Number
     * @default 0
     */
    this.radius = radius || 0;
};

/**
 * Creates a clone of this Circle instance
 *
 * @method clone
 * @return {Circle} a copy of the polygon
 */
PIXI.Circle.prototype.clone = function()
{
    return new PIXI.Circle(this.x, this.y, this.radius);
};

/**
 * Checks if the x, and y coords passed to this function are contained within this circle
 *
 * @method contains
 * @param x {Number} The X coord of the point to test
 * @param y {Number} The Y coord of the point to test
 * @return {Boolean} if the x/y coords are within this polygon
 */
PIXI.Circle.prototype.contains = function(x, y)
{
    if(this.radius <= 0)
        return false;

    var dx = (this.x - x),
        dy = (this.y - y),
        r2 = this.radius * this.radius;

    dx *= dx;
    dy *= dy;

    return (dx + dy <= r2);
};

// constructor
PIXI.Circle.prototype.constructor = PIXI.Circle;


/**
 * @author Chad Engler <chad@pantherdev.com>
 */

/**
 * The Ellipse object can be used to specify a hit area for displayobjects
 *
 * @class Ellipse
 * @constructor
 * @param x {Number} The X coord of the upper-left corner of the framing rectangle of this ellipse
 * @param y {Number} The Y coord of the upper-left corner of the framing rectangle of this ellipse
 * @param width {Number} The overall width of this ellipse
 * @param height {Number} The overall height of this ellipse
 */
PIXI.Ellipse = function(x, y, width, height)
{
    /**
     * @property x
     * @type Number
     * @default 0
     */
    this.x = x || 0;

    /**
     * @property y
     * @type Number
     * @default 0
     */
    this.y = y || 0;

    /**
     * @property width
     * @type Number
     * @default 0
     */
    this.width = width || 0;

    /**
     * @property height
     * @type Number
     * @default 0
     */
    this.height = height || 0;
};

/**
 * Creates a clone of this Ellipse instance
 *
 * @method clone
 * @return {Ellipse} a copy of the ellipse
 */
PIXI.Ellipse.prototype.clone = function()
{
    return new PIXI.Ellipse(this.x, this.y, this.width, this.height);
};

/**
 * Checks if the x, and y coords passed to this function are contained within this ellipse
 *
 * @method contains
 * @param x {Number} The X coord of the point to test
 * @param y {Number} The Y coord of the point to test
 * @return {Boolean} if the x/y coords are within this ellipse
 */
PIXI.Ellipse.prototype.contains = function(x, y)
{
    if(this.width <= 0 || this.height <= 0)
        return false;

    //normalize the coords to an ellipse with center 0,0
    //and a radius of 0.5
    var normx = ((x - this.x) / this.width) - 0.5,
        normy = ((y - this.y) / this.height) - 0.5;

    normx *= normx;
    normy *= normy;

    return (normx + normy < 0.25);
};

PIXI.Ellipse.prototype.getBounds = function()
{
    return new PIXI.Rectangle(this.x, this.y, this.width, this.height);
};

// constructor
PIXI.Ellipse.prototype.constructor = PIXI.Ellipse;



/*
 * A lighter version of the rad gl-matrix created by Brandon Jones, Colin MacKenzie IV
 * you both rock!
 */

function determineMatrixArrayType() {
    PIXI.Matrix = (typeof Float32Array !== 'undefined') ? Float32Array : Array;
    return PIXI.Matrix;
}

determineMatrixArrayType();

PIXI.mat3 = {};

PIXI.mat3.create = function()
{
    var matrix = new PIXI.Matrix(9);

    matrix[0] = 1;
    matrix[1] = 0;
    matrix[2] = 0;
    matrix[3] = 0;
    matrix[4] = 1;
    matrix[5] = 0;
    matrix[6] = 0;
    matrix[7] = 0;
    matrix[8] = 1;

    return matrix;
};


PIXI.mat3.identity = function(matrix)
{
    matrix[0] = 1;
    matrix[1] = 0;
    matrix[2] = 0;
    matrix[3] = 0;
    matrix[4] = 1;
    matrix[5] = 0;
    matrix[6] = 0;
    matrix[7] = 0;
    matrix[8] = 1;

    return matrix;
};


PIXI.mat4 = {};

PIXI.mat4.create = function()
{
    var matrix = new PIXI.Matrix(16);

    matrix[0] = 1;
    matrix[1] = 0;
    matrix[2] = 0;
    matrix[3] = 0;
    matrix[4] = 0;
    matrix[5] = 1;
    matrix[6] = 0;
    matrix[7] = 0;
    matrix[8] = 0;
    matrix[9] = 0;
    matrix[10] = 1;
    matrix[11] = 0;
    matrix[12] = 0;
    matrix[13] = 0;
    matrix[14] = 0;
    matrix[15] = 1;

    return matrix;
};

PIXI.mat3.multiply = function (mat, mat2, dest)
{
    if (!dest) { dest = mat; }

    // Cache the matrix values (makes for huge speed increases!)
    var a00 = mat[0], a01 = mat[1], a02 = mat[2],
        a10 = mat[3], a11 = mat[4], a12 = mat[5],
        a20 = mat[6], a21 = mat[7], a22 = mat[8],

        b00 = mat2[0], b01 = mat2[1], b02 = mat2[2],
        b10 = mat2[3], b11 = mat2[4], b12 = mat2[5],
        b20 = mat2[6], b21 = mat2[7], b22 = mat2[8];

    dest[0] = b00 * a00 + b01 * a10 + b02 * a20;
    dest[1] = b00 * a01 + b01 * a11 + b02 * a21;
    dest[2] = b00 * a02 + b01 * a12 + b02 * a22;

    dest[3] = b10 * a00 + b11 * a10 + b12 * a20;
    dest[4] = b10 * a01 + b11 * a11 + b12 * a21;
    dest[5] = b10 * a02 + b11 * a12 + b12 * a22;

    dest[6] = b20 * a00 + b21 * a10 + b22 * a20;
    dest[7] = b20 * a01 + b21 * a11 + b22 * a21;
    dest[8] = b20 * a02 + b21 * a12 + b22 * a22;

    return dest;
};

PIXI.mat3.clone = function(mat)
{
    var matrix = new PIXI.Matrix(9);

    matrix[0] = mat[0];
    matrix[1] = mat[1];
    matrix[2] = mat[2];
    matrix[3] = mat[3];
    matrix[4] = mat[4];
    matrix[5] = mat[5];
    matrix[6] = mat[6];
    matrix[7] = mat[7];
    matrix[8] = mat[8];

    return matrix;
};

PIXI.mat3.transpose = function (mat, dest)
{
    // If we are transposing ourselves we can skip a few steps but have to cache some values
    if (!dest || mat === dest) {
        var a01 = mat[1], a02 = mat[2],
            a12 = mat[5];

        mat[1] = mat[3];
        mat[2] = mat[6];
        mat[3] = a01;
        mat[5] = mat[7];
        mat[6] = a02;
        mat[7] = a12;
        return mat;
    }

    dest[0] = mat[0];
    dest[1] = mat[3];
    dest[2] = mat[6];
    dest[3] = mat[1];
    dest[4] = mat[4];
    dest[5] = mat[7];
    dest[6] = mat[2];
    dest[7] = mat[5];
    dest[8] = mat[8];
    return dest;
};

PIXI.mat3.toMat4 = function (mat, dest)
{
    if (!dest) { dest = PIXI.mat4.create(); }

    dest[15] = 1;
    dest[14] = 0;
    dest[13] = 0;
    dest[12] = 0;

    dest[11] = 0;
    dest[10] = mat[8];
    dest[9] = mat[7];
    dest[8] = mat[6];

    dest[7] = 0;
    dest[6] = mat[5];
    dest[5] = mat[4];
    dest[4] = mat[3];

    dest[3] = 0;
    dest[2] = mat[2];
    dest[1] = mat[1];
    dest[0] = mat[0];

    return dest;
};


/////


PIXI.mat4.create = function()
{
    var matrix = new PIXI.Matrix(16);

    matrix[0] = 1;
    matrix[1] = 0;
    matrix[2] = 0;
    matrix[3] = 0;
    matrix[4] = 0;
    matrix[5] = 1;
    matrix[6] = 0;
    matrix[7] = 0;
    matrix[8] = 0;
    matrix[9] = 0;
    matrix[10] = 1;
    matrix[11] = 0;
    matrix[12] = 0;
    matrix[13] = 0;
    matrix[14] = 0;
    matrix[15] = 1;

    return matrix;
};

PIXI.mat4.transpose = function (mat, dest)
{
    // If we are transposing ourselves we can skip a few steps but have to cache some values
    if (!dest || mat === dest)
    {
        var a01 = mat[1], a02 = mat[2], a03 = mat[3],
            a12 = mat[6], a13 = mat[7],
            a23 = mat[11];

        mat[1] = mat[4];
        mat[2] = mat[8];
        mat[3] = mat[12];
        mat[4] = a01;
        mat[6] = mat[9];
        mat[7] = mat[13];
        mat[8] = a02;
        mat[9] = a12;
        mat[11] = mat[14];
        mat[12] = a03;
        mat[13] = a13;
        mat[14] = a23;
        return mat;
    }

    dest[0] = mat[0];
    dest[1] = mat[4];
    dest[2] = mat[8];
    dest[3] = mat[12];
    dest[4] = mat[1];
    dest[5] = mat[5];
    dest[6] = mat[9];
    dest[7] = mat[13];
    dest[8] = mat[2];
    dest[9] = mat[6];
    dest[10] = mat[10];
    dest[11] = mat[14];
    dest[12] = mat[3];
    dest[13] = mat[7];
    dest[14] = mat[11];
    dest[15] = mat[15];
    return dest;
};

PIXI.mat4.multiply = function (mat, mat2, dest)
{
    if (!dest) { dest = mat; }

    // Cache the matrix values (makes for huge speed increases!)
    var a00 = mat[ 0], a01 = mat[ 1], a02 = mat[ 2], a03 = mat[3];
    var a10 = mat[ 4], a11 = mat[ 5], a12 = mat[ 6], a13 = mat[7];
    var a20 = mat[ 8], a21 = mat[ 9], a22 = mat[10], a23 = mat[11];
    var a30 = mat[12], a31 = mat[13], a32 = mat[14], a33 = mat[15];

    // Cache only the current line of the second matrix
    var b0  = mat2[0], b1 = mat2[1], b2 = mat2[2], b3 = mat2[3];
    dest[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    dest[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    dest[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    dest[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;

    b0 = mat2[4];
    b1 = mat2[5];
    b2 = mat2[6];
    b3 = mat2[7];
    dest[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    dest[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    dest[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    dest[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;

    b0 = mat2[8];
    b1 = mat2[9];
    b2 = mat2[10];
    b3 = mat2[11];
    dest[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    dest[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    dest[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    dest[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;

    b0 = mat2[12];
    b1 = mat2[13];
    b2 = mat2[14];
    b3 = mat2[15];
    dest[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    dest[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    dest[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    dest[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;

    return dest;
};

PIXI.identityMatrix = PIXI.mat3.create();

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * The base class for all objects that are rendered on the screen.
 *
 * @class DisplayObject
 * @constructor
 */
PIXI.DisplayObject = function()
{
    this.last = this;
    this.first = this;
    /**
     * The coordinate of the object relative to the local coordinates of the parent.
     *
     * @property position
     * @type Point
     */
    this.position = new PIXI.Point();

    /**
     * The scale factor of the object.
     *
     * @property scale
     * @type Point
     */
    this.scale = new PIXI.Point(1,1);//{x:1, y:1};

    /**
     * The pivot point of the displayObject that it rotates around
     *
     * @property pivot
     * @type Point
     */
    this.pivot = new PIXI.Point(0,0);

    /**
     * The rotation of the object in radians.
     *
     * @property rotation
     * @type Number
     */
    this.rotation = 0;

    /**
     * The opacity of the object.
     *
     * @property alpha
     * @type Number
     */
    this.alpha = 1;

    /**
     * The visibility of the object.
     *
     * @property visible
     * @type Boolean
     */
    this.visible = true;

    /**
     * This is the defined area that will pick up mouse / touch events. It is null by default.
     * Setting it is a neat way of optimising the hitTest function that the interactionManager will use (as it will not need to hit test all the children)
     *
     * @property hitArea
     * @type Rectangle|Circle|Ellipse|Polygon
     */
    this.hitArea = null;

    /**
     * This is used to indicate if the displayObject should display a mouse hand cursor on rollover
     *
     * @property buttonMode
     * @type Boolean
     */
    this.buttonMode = false;

    /**
     * Can this object be rendered
     *
     * @property renderable
     * @type Boolean
     */
    this.renderable = false;

    /**
     * [read-only] The display object container that contains this display object.
     *
     * @property parent
     * @type DisplayObjectContainer
     * @readOnly
     */
    this.parent = null;

    /**
     * [read-only] The stage the display object is connected to, or undefined if it is not connected to the stage.
     *
     * @property stage
     * @type Stage
     * @readOnly
     */
    this.stage = null;

    /**
     * [read-only] The multiplied alpha of the displayobject
     *
     * @property worldAlpha
     * @type Number
     * @readOnly
     */
    this.worldAlpha = 1;

    /**
     * [read-only] Whether or not the object is interactive, do not toggle directly! use the `interactive` property
     *
     * @property _interactive
     * @type Boolean
     * @readOnly
     * @private
     */
    this._interactive = false;

    /**
     * This is the curser that will be used when the mouse is over this object. To enable this the element must have interaction = true and buttonMode = true
     *
     * @property defaultCursor
     * @type String
     *
    */
    this.defaultCursor = 'pointer';

    /**
     * [read-only] Current transform of the object based on world (parent) factors
     *
     * @property worldTransform
     * @type Mat3
     * @readOnly
     * @private
     */
    this.worldTransform = PIXI.mat3.create(); //mat3.identity();

    /**
     * [read-only] Current transform of the object locally
     *
     * @property localTransform
     * @type Mat3
     * @readOnly
     * @private
     */
    this.localTransform = PIXI.mat3.create(); //mat3.identity();

    /**
     * [NYI] Unkown
     *
     * @property color
     * @type Array<>
     * @private
     */
    this.color = [];

    /**
     * [NYI] Holds whether or not this object is dynamic, for rendering optimization
     *
     * @property dynamic
     * @type Boolean
     * @private
     */
    this.dynamic = true;

    // chach that puppy!
    this._sr = 0;
    this._cr = 1;


    this.filterArea = new PIXI.Rectangle(0,0,1,1);


    /**
    *
    *
    *
    */
    this._bounds = new PIXI.Rectangle(0, 0, 1, 1);
    this._currentBounds = null;
    this._mask = null;

    /*
     * MOUSE Callbacks
     */

    /**
     * A callback that is used when the users clicks on the displayObject with their mouse
     * @method click
     * @param interactionData {InteractionData}
     */

    /**
     * A callback that is used when the user clicks the mouse down over the sprite
     * @method mousedown
     * @param interactionData {InteractionData}
     */

    /**
     * A callback that is used when the user releases the mouse that was over the displayObject
     * for this callback to be fired the mouse must have been pressed down over the displayObject
     * @method mouseup
     * @param interactionData {InteractionData}
     */

    /**
     * A callback that is used when the user releases the mouse that was over the displayObject but is no longer over the displayObject
     * for this callback to be fired, The touch must have started over the displayObject
     * @method mouseupoutside
     * @param interactionData {InteractionData}
     */

    /**
     * A callback that is used when the users mouse rolls over the displayObject
     * @method mouseover
     * @param interactionData {InteractionData}
     */

    /**
     * A callback that is used when the users mouse leaves the displayObject
     * @method mouseout
     * @param interactionData {InteractionData}
     */


    /*
     * TOUCH Callbacks
     */

    /**
     * A callback that is used when the users taps on the sprite with their finger
     * basically a touch version of click
     * @method tap
     * @param interactionData {InteractionData}
     */

    /**
     * A callback that is used when the user touch's over the displayObject
     * @method touchstart
     * @param interactionData {InteractionData}
     */

    /**
     * A callback that is used when the user releases a touch over the displayObject
     * @method touchend
     * @param interactionData {InteractionData}
     */

    /**
     * A callback that is used when the user releases the touch that was over the displayObject
     * for this callback to be fired, The touch must have started over the sprite
     * @method touchendoutside
     * @param interactionData {InteractionData}
     */
};

// constructor
PIXI.DisplayObject.prototype.constructor = PIXI.DisplayObject;

/**
 * [Deprecated] Indicates if the sprite will have touch and mouse interactivity. It is false by default
 * Instead of using this function you can now simply set the interactive property to true or false
 *
 * @method setInteractive
 * @param interactive {Boolean}
 * @deprecated Simply set the `interactive` property directly
 */
PIXI.DisplayObject.prototype.setInteractive = function(interactive)
{
    this.interactive = interactive;
};

/**
 * Indicates if the sprite will have touch and mouse interactivity. It is false by default
 *
 * @property interactive
 * @type Boolean
 * @default false
 */
Object.defineProperty(PIXI.DisplayObject.prototype, 'interactive', {
    get: function() {
        return this._interactive;
    },
    set: function(value) {
        this._interactive = value;

        // TODO more to be done here..
        // need to sort out a re-crawl!
        if(this.stage)this.stage.dirty = true;
    }
});

/**
 * [read-only] Indicates if the sprite is globaly visible.
 *
 * @property worldVisible
 * @type Boolean
 */
Object.defineProperty(PIXI.DisplayObject.prototype, 'worldVisible', {
    get: function() {
        var item = this;

        do
        {
            if(!item.visible)return false;
            item = item.parent;
        }
        while(item);

        return true;
    }
});

/**
 * Sets a mask for the displayObject. A mask is an object that limits the visibility of an object to the shape of the mask applied to it.
 * In PIXI a regular mask must be a PIXI.Ggraphics object. This allows for much faster masking in canvas as it utilises shape clipping.
 * To remove a mask, set this property to null.
 *
 * @property mask
 * @type Graphics
 */
Object.defineProperty(PIXI.DisplayObject.prototype, 'mask', {
    get: function() {
        return this._mask;
    },
    set: function(value) {

        if(this._mask)this._mask.isMask = false;
        this._mask = value;
        if(this._mask)this._mask.isMask = true;
    }
});

/**
 * Sets the filters for the displayObject.
 * * IMPORTANT: This is a webGL only feature and will be ignored by the canvas renderer.
 * To remove filters simply set this property to 'null'
 * @property filters
 * @type Array An array of filters
 */
Object.defineProperty(PIXI.DisplayObject.prototype, 'filters', {
    get: function() {
        return this._filters;
    },
    set: function(value) {

        if(value)
        {
            // now put all the passes in one place..
            var passes = [];
            for (var i = 0; i < value.length; i++)
            {
                var filterPasses = value[i].passes;
                for (var j = 0; j < filterPasses.length; j++)
                {
                    passes.push(filterPasses[j]);
                }
            }

            // TODO change this as it is legacy
            this._filterBlock = {target:this, filterPasses:passes};
        }

        this._filters = value;
    }
});

/*
 * Updates the object transform for rendering
 *
 * @method updateTransform
 * @private
 */
PIXI.DisplayObject.prototype.updateTransform = function()
{
    // TODO OPTIMIZE THIS!! with dirty
    if(this.rotation !== this.rotationCache)
    {
        this.rotationCache = this.rotation;
        this._sr =  Math.sin(this.rotation);
        this._cr =  Math.cos(this.rotation);
    }

    var localTransform = this.localTransform;
    var parentTransform = this.parent.worldTransform;
    var worldTransform = this.worldTransform;
    //console.log(localTransform)
    localTransform[0] = this._cr * this.scale.x;
    localTransform[1] = -this._sr * this.scale.y;
    localTransform[3] = this._sr * this.scale.x;
    localTransform[4] = this._cr * this.scale.y;

    // TODO --> do we even need a local matrix???

    var px = this.pivot.x;
    var py = this.pivot.y;

    // Cache the matrix values (makes for huge speed increases!)
    var a00 = localTransform[0], a01 = localTransform[1], a02 = this.position.x - localTransform[0] * px - py * localTransform[1],
        a10 = localTransform[3], a11 = localTransform[4], a12 = this.position.y - localTransform[4] * py - px * localTransform[3],

        b00 = parentTransform[0], b01 = parentTransform[1], b02 = parentTransform[2],
        b10 = parentTransform[3], b11 = parentTransform[4], b12 = parentTransform[5];

    localTransform[2] = a02;
    localTransform[5] = a12;

    worldTransform[0] = b00 * a00 + b01 * a10;
    worldTransform[1] = b00 * a01 + b01 * a11;
    worldTransform[2] = b00 * a02 + b01 * a12 + b02;

    worldTransform[3] = b10 * a00 + b11 * a10;
    worldTransform[4] = b10 * a01 + b11 * a11;
    worldTransform[5] = b10 * a02 + b11 * a12 + b12;

    // because we are using affine transformation, we can optimise the matrix concatenation process.. wooo!
    // mat3.multiply(this.localTransform, this.parent.worldTransform, this.worldTransform);
    this.worldAlpha = this.alpha * this.parent.worldAlpha;
};

PIXI.DisplayObject.prototype.getBounds = function()
{
    return PIXI.EmptyRectangle;
};

PIXI.DisplayObject.prototype.getLocalBounds = function()
{
    var matrixCache = this.worldTransform;

    this.worldTransform = PIXI.identityMatrix;

    this.updateTransform();

    var bounds = this.getBounds();

    this.worldTransform = matrixCache;

    return bounds;
};

PIXI.DisplayObject.prototype.setStageReference = function(stage)
{
    this.stage = stage;
    if(this._interactive)this.stage.dirty = true;
};

PIXI.DisplayObject.prototype._renderWebGL = function(renderSession)
{
    // OVERWRITE;
    // this line is just here to pass jshinting :)
    renderSession = renderSession;
};

PIXI.DisplayObject.prototype._renderCanvas = function(renderSession)
{
    // OVERWRITE;
    // this line is just here to pass jshinting :)
    renderSession = renderSession;
};

PIXI.EmptyRectangle = new PIXI.Rectangle(0,0,0,0);


/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */


/**
 * A DisplayObjectContainer represents a collection of display objects.
 * It is the base class of all display objects that act as a container for other objects.
 *
 * @class DisplayObjectContainer
 * @extends DisplayObject
 * @constructor
 */
PIXI.DisplayObjectContainer = function()
{
    PIXI.DisplayObject.call( this );

    /**
     * [read-only] The of children of this container.
     *
     * @property children
     * @type Array<DisplayObject>
     * @readOnly
     */
    this.children = [];
};

// constructor
PIXI.DisplayObjectContainer.prototype = Object.create( PIXI.DisplayObject.prototype );
PIXI.DisplayObjectContainer.prototype.constructor = PIXI.DisplayObjectContainer;

/**
 * The width of the displayObjectContainer, setting this will actually modify the scale to acheive the value set
 *
 * @property width
 * @type Number
 */

/*
Object.defineProperty(PIXI.DisplayObjectContainer.prototype, 'width', {
    get: function() {
        return this.scale.x * this.getLocalBounds().width;
    },
    set: function(value) {
        this.scale.x = value / (this.getLocalBounds().width/this.scale.x);
        this._width = value;
    }
});
*/

/**
 * The height of the displayObjectContainer, setting this will actually modify the scale to acheive the value set
 *
 * @property height
 * @type Number
 */

 /*
Object.defineProperty(PIXI.DisplayObjectContainer.prototype, 'height', {
    get: function() {
        return  this.scale.y * this.getLocalBounds().height;
    },
    set: function(value) {
        this.scale.y = value / (this.getLocalBounds().height/this.scale.y);
        this._height = value;
    }
});
*/

/**
 * Adds a child to the container.
 *
 * @method addChild
 * @param child {DisplayObject} The DisplayObject to add to the container
 */
PIXI.DisplayObjectContainer.prototype.addChild = function(child)
{
    if(child.parent && child !== this)
    {
        //// COULD BE THIS???
        child.parent.removeChild(child);
        //  return;
    }

    child.parent = this;

    this.children.push(child);

    // update the stage refference..

    if(this.stage)child.setStageReference(this.stage);

};

/**
 * Adds a child to the container at a specified index. If the index is out of bounds an error will be thrown
 *
 * @method addChildAt
 * @param child {DisplayObject} The child to add
 * @param index {Number} The index to place the child in
 */
PIXI.DisplayObjectContainer.prototype.addChildAt = function(child, index)
{
    if(index >= 0 && index <= this.children.length)
    {
        if(child.parent)
        {
            child.parent.removeChild(child);
        }

        child.parent = this;

        this.children.splice(index, 0, child);

        if(this.stage)child.setStageReference(this.stage);
    }
    else
    {
        throw new Error(child + ' The index '+ index +' supplied is out of bounds ' + this.children.length);
    }
};

/**
 * [NYI] Swaps the depth of 2 displayObjects
 *
 * @method swapChildren
 * @param child {DisplayObject}
 * @param child2 {DisplayObject}
 * @private
 */
PIXI.DisplayObjectContainer.prototype.swapChildren = function(child, child2)
{
    if(child === child2) {
        return;
    }

    var index1 = this.children.indexOf(child);
    var index2 = this.children.indexOf(child2);

    if(index1 < 0 || index2 < 0) {
        throw new Error('swapChildren: Both the supplied DisplayObjects must be a child of the caller.');
    }

    this.children[index1] = child2;
    this.children[index2] = child;

};

/**
 * Returns the Child at the specified index
 *
 * @method getChildAt
 * @param index {Number} The index to get the child from
 */
PIXI.DisplayObjectContainer.prototype.getChildAt = function(index)
{
    if(index >= 0 && index < this.children.length)
    {
        return this.children[index];
    }
    else
    {
        throw new Error('The supplied DisplayObjects must be a child of the caller ' + this);
    }
};

/**
 * Removes a child from the container.
 *
 * @method removeChild
 * @param child {DisplayObject} The DisplayObject to remove
 */
PIXI.DisplayObjectContainer.prototype.removeChild = function(child)
{
    var index = this.children.indexOf( child );
    if ( index !== -1 )
    {
        // update the stage reference..
        if(this.stage)child.removeStageReference();

        child.parent = undefined;
        this.children.splice( index, 1 );
    }
    else
    {
        throw new Error(child + ' The supplied DisplayObject must be a child of the caller ' + this);
    }
};

/*
 * Updates the container's children's transform for rendering
 *
 * @method updateTransform
 * @private
 */
PIXI.DisplayObjectContainer.prototype.updateTransform = function()
{
    //this._currentBounds = null;

    if(!this.visible)return;

    PIXI.DisplayObject.prototype.updateTransform.call( this );

    for(var i=0,j=this.children.length; i<j; i++)
    {
        this.children[i].updateTransform();
    }
};

PIXI.DisplayObjectContainer.prototype.getBounds = function()
{
    if(this.children.length === 0)return PIXI.EmptyRectangle;

    // TODO the bounds have already been calculated this render session so return what we have


    var minX = Infinity;
    var minY = Infinity;

    var maxX = -Infinity;
    var maxY = -Infinity;

    var childBounds;
    var childMaxX;
    var childMaxY;

    for(var i=0,j=this.children.length; i<j; i++)
    {
        var child = this.children[i];

        if(!child.visible)continue;

        childBounds = this.children[i].getBounds();

        minX = minX < childBounds.x ? minX : childBounds.x;
        minY = minY < childBounds.y ? minY : childBounds.y;

        childMaxX = childBounds.width + childBounds.x;
        childMaxY = childBounds.height + childBounds.y;

        maxX = maxX > childMaxX ? maxX : childMaxX;
        maxY = maxY > childMaxY ? maxY : childMaxY;
    }

    var bounds = this._bounds;

    bounds.x = minX;
    bounds.y = minY;
    bounds.width = maxX - minX;
    bounds.height = maxY - minY;

    // TODO: store a refferance so that if this function gets called again in the render cycle we do not have to recacalculate
    //this._currentBounds = bounds;

    return bounds;
};

PIXI.DisplayObjectContainer.prototype.setStageReference = function(stage)
{
    this.stage = stage;
    if(this._interactive)this.stage.dirty = true;

    for(var i=0,j=this.children.length; i<j; i++)
    {
        var child = this.children[i];
        child.setStageReference(stage);
    }
};

PIXI.DisplayObjectContainer.prototype.removeStageReference = function()
{

    for(var i=0,j=this.children.length; i<j; i++)
    {
        var child = this.children[i];
        child.removeStageReference();
    }

    if(this._interactive)this.stage.dirty = true;

    this.stage = null;
};

PIXI.DisplayObjectContainer.prototype._renderWebGL = function(renderSession)
{
    if(this.visible === false || this.alpha === 0)return;

    var i,j;

    if(this._mask || this._filters)
    {
        if(this._mask)
        {
            renderSession.spriteBatch.stop();
            renderSession.maskManager.pushMask(this.mask, renderSession);
            renderSession.spriteBatch.start();
        }

        if(this._filters)
        {
            renderSession.spriteBatch.flush();
            renderSession.filterManager.pushFilter(this._filterBlock);
        }

        // simple render children!
        for(i=0,j=this.children.length; i<j; i++)
        {
            this.children[i]._renderWebGL(renderSession);
        }

        renderSession.spriteBatch.stop();

        if(this._filters)renderSession.filterManager.popFilter();
        if(this._mask)renderSession.maskManager.popMask(renderSession);

        renderSession.spriteBatch.start();
    }
    else
    {
        // simple render children!
        for(i=0,j=this.children.length; i<j; i++)
        {
            this.children[i]._renderWebGL(renderSession);
        }
    }
};

PIXI.DisplayObjectContainer.prototype._renderCanvas = function(renderSession)
{
    if(this.visible === false || this.alpha === 0)return;

    if(this._mask)
    {
        renderSession.maskManager.pushMask(this._mask, renderSession.context);
    }

    for(var i=0,j=this.children.length; i<j; i++)
    {
        var child = this.children[i];
        child._renderCanvas(renderSession);
    }

    if(this._mask)
    {
        renderSession.maskManager.popMask(renderSession.context);
    }
};



/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

PIXI.blendModes = {};
PIXI.blendModes.NORMAL      = 0;
PIXI.blendModes.ADD         = 1;
PIXI.blendModes.MULTIPLY    = 2;
PIXI.blendModes.SCREEN      = 3;

/**
 * The SPrite object is the base for all textured objects that are rendered to the screen
 *
 * @class Sprite™
 * @extends DisplayObjectContainer
 * @constructor
 * @param texture {Texture} The texture for this sprite
 * @type String
 */
PIXI.Sprite = function(texture)
{
    PIXI.DisplayObjectContainer.call( this );

    /**
     * The anchor sets the origin point of the texture.
     * The default is 0,0 this means the textures origin is the top left
     * Setting than anchor to 0.5,0.5 means the textures origin is centered
     * Setting the anchor to 1,1 would mean the textures origin points will be the bottom right
     *
     * @property anchor
     * @type Point
     */
    this.anchor = new PIXI.Point();

    /**
     * The texture that the sprite is using
     *
     * @property texture
     * @type Texture
     */
    this.texture = texture;

    /**
     * The width of the sprite (this is initially set by the texture)
     *
     * @property _width
     * @type Number
     * @private
     */
    this._width = 0;

    /**
     * The height of the sprite (this is initially set by the texture)
     *
     * @property _height
     * @type Number
     * @private
     */
    this._height = 0;


    /**
     * The tint applied to the sprite. This is a hex value
     *
     * @property tint
     * @type Number
     * @default 0xFFFFFF
     */
    this.tint = 0xFFFFFF;// * Math.random();

    /**
     * The blend mode to be applied to the sprite
     *
     * @property blendMode
     * @type Number
     * @default PIXI.blendModes.NORMAL;
     */
    this.blendMode = PIXI.blendModes.NORMAL;

    if(texture.baseTexture.hasLoaded)
    {
        this.onTextureUpdate();
    }
    else
    {
        this.onTextureUpdateBind = this.onTextureUpdate.bind(this);
        this.texture.addEventListener( 'update', this.onTextureUpdateBind );
    }

    this.renderable = true;
};

// constructor
PIXI.Sprite.prototype = Object.create( PIXI.DisplayObjectContainer.prototype );
PIXI.Sprite.prototype.constructor = PIXI.Sprite;

/**
 * The width of the sprite, setting this will actually modify the scale to acheive the value set
 *
 * @property width
 * @type Number
 */
Object.defineProperty(PIXI.Sprite.prototype, 'width', {
    get: function() {
        return this.scale.x * this.texture.frame.width;
    },
    set: function(value) {
        this.scale.x = value / this.texture.frame.width;
        this._width = value;
    }
});

/**
 * The height of the sprite, setting this will actually modify the scale to acheive the value set
 *
 * @property height
 * @type Number
 */
Object.defineProperty(PIXI.Sprite.prototype, 'height', {
    get: function() {
        return  this.scale.y * this.texture.frame.height;
    },
    set: function(value) {
        this.scale.y = value / this.texture.frame.height;
        this._height = value;
    }
});

/**
 * Sets the texture of the sprite
 *
 * @method setTexture
 * @param texture {Texture} The PIXI texture that is displayed by the sprite
 */
PIXI.Sprite.prototype.setTexture = function(texture)
{
    // stop current texture;
    if(this.texture.baseTexture !== texture.baseTexture)
    {
        this.textureChange = true;
        this.texture = texture;
    }
    else
    {
        this.texture = texture;
    }

    this.cachedTint = 0xFFFFFF;
    this.updateFrame = true;
};

/**
 * When the texture is updated, this event will fire to update the scale and frame
 *
 * @method onTextureUpdate
 * @param event
 * @private
 */
PIXI.Sprite.prototype.onTextureUpdate = function()
{
    // so if _width is 0 then width was not set..
    if(this._width)this.scale.x = this._width / this.texture.frame.width;
    if(this._height)this.scale.y = this._height / this.texture.frame.height;


    this.updateFrame = true;
};

PIXI.Sprite.prototype.getBounds = function()
{

    var width = this.texture.frame.width;
    var height = this.texture.frame.height;

    var w0 = width * (1-this.anchor.x);
    var w1 = width * -this.anchor.x;

    var h0 = height * (1-this.anchor.y);
    var h1 = height * -this.anchor.y;

    var worldTransform = this.worldTransform;

    var a = worldTransform[0];
    var b = worldTransform[3];
    var c = worldTransform[1];
    var d = worldTransform[4];
    var tx = worldTransform[2];
    var ty = worldTransform[5];

    var x1 = a * w1 + c * h1 + tx;
    var y1 = d * h1 + b * w1 + ty;

    var x2 = a * w0 + c * h1 + tx;
    var y2 = d * h1 + b * w0 + ty;

    var x3 = a * w0 + c * h0 + tx;
    var y3 = d * h0 + b * w0 + ty;

    var x4 =  a * w1 + c * h0 + tx;
    var y4 =  d * h0 + b * w1 + ty;

    var maxX = -Infinity;
    var maxY = -Infinity;

    var minX = Infinity;
    var minY = Infinity;

    minX = x1 < minX ? x1 : minX;
    minX = x2 < minX ? x2 : minX;
    minX = x3 < minX ? x3 : minX;
    minX = x4 < minX ? x4 : minX;

    minY = y1 < minY ? y1 : minY;
    minY = y2 < minY ? y2 : minY;
    minY = y3 < minY ? y3 : minY;
    minY = y4 < minY ? y4 : minY;

    maxX = x1 > maxX ? x1 : maxX;
    maxX = x2 > maxX ? x2 : maxX;
    maxX = x3 > maxX ? x3 : maxX;
    maxX = x4 > maxX ? x4 : maxX;

    maxY = y1 > maxY ? y1 : maxY;
    maxY = y2 > maxY ? y2 : maxY;
    maxY = y3 > maxY ? y3 : maxY;
    maxY = y4 > maxY ? y4 : maxY;

    var bounds = this._bounds;

    bounds.x = minX;
    bounds.width = maxX - minX;

    bounds.y = minY;
    bounds.height = maxY - minY;

    // store a refferance so that if this function gets called again in the render cycle we do not have to recacalculate
    this._currentBounds = bounds;

    return bounds;
};


PIXI.Sprite.prototype._renderWebGL = function(renderSession)
{
    // if the sprite is not visible or the alpha is 0 then no need to render this element
    if(this.visible === false || this.alpha === 0)return;

    var i,j;

    // do a quick check to see if this element has a mask or a filter.
    if(this._mask || this._filters)
    {
        var spriteBatch =  renderSession.spriteBatch;

        if(this._mask)
        {
            spriteBatch.stop();
            renderSession.maskManager.pushMask(this.mask, renderSession);
            spriteBatch.start();
        }

        if(this._filters)
        {
            spriteBatch.flush();
            renderSession.filterManager.pushFilter(this._filterBlock);
        }

        // add this sprite to the batch
        spriteBatch.render(this);

        // now loop through the children and make sure they get rendered
        for(i=0,j=this.children.length; i<j; i++)
        {
            this.children[i]._renderWebGL(renderSession);
        }

        // time to stop the sprite batch as either a mask element or a filter draw will happen next
        spriteBatch.stop();

        if(this._filters)renderSession.filterManager.popFilter();
        if(this._mask)renderSession.maskManager.popMask(renderSession);

        spriteBatch.start();
    }
    else
    {
        renderSession.spriteBatch.render(this);

        // simple render children!
        for(i=0,j=this.children.length; i<j; i++)
        {
            this.children[i]._renderWebGL(renderSession);
        }
    }


    //TODO check culling
};

PIXI.Sprite.prototype._renderCanvas = function(renderSession)
{
    // if the sprite is not visible or the alpha is 0 then no need to render this element
    if(this.visible === false || this.alpha === 0)return;

    if(this._mask)
    {
        renderSession.maskManager.pushMask(this._mask, renderSession.context);
    }

    var frame = this.texture.frame;
    var context = renderSession.context;
    var texture = this.texture;

    //ignore null sources
    if(frame && frame.width && frame.height && texture.baseTexture.source)
    {
        context.globalAlpha = this.worldAlpha;

        var transform = this.worldTransform;

        // alow for trimming

        context.setTransform(transform[0], transform[3], transform[1], transform[4], transform[2], transform[5]);

        // check blend mode
        if(this.blendMode !== renderSession.currentBlendMode)
        {
            renderSession.currentBlendMode = this.blendMode;
            context.globalCompositeOperation = PIXI.blendModesCanvas[renderSession.currentBlendMode];
        }


        //if smoothingEnabled is supported and we need to change the smoothing property for this texture
     //   if(this.smoothProperty && this.scaleMode !== displayObject.texture.baseTexture.scaleMode) {
       //     this.scaleMode = displayObject.texture.baseTexture.scaleMode;
         //   context[this.smoothProperty] = (this.scaleMode === PIXI.BaseTexture.SCALE_MODE.LINEAR);
        //}


        if(this.tint !== 0xFFFFFF)
        {
            if(this.cachedTint !== this.tint)
            {
                // no point tinting an image that has not loaded yet!
                if(!texture.baseTexture.hasLoaded)return;

                this.cachedTint = this.tint;

                //TODO clean up cacheing - how to clean up the caches?
                this.tintedTexture = PIXI.CanvasTinter.getTintedTexture(this, this.tint);

            }

            context.drawImage(this.tintedTexture,
                               0,
                               0,
                               frame.width,
                               frame.height,
                               (this.anchor.x) * -frame.width,
                               (this.anchor.y) * -frame.height,
                               frame.width,
                               frame.height);
        }
        else
        {



            if(texture.trimmed)
            {
                var trim =  texture.trim;

                context.drawImage(this.texture.baseTexture.source,
                               frame.x,
                               frame.y,
                               frame.width,
                               frame.height,
                               trim.x - this.anchor.x * trim.realWidth,
                               trim.y - this.anchor.y * trim.realHeight,
                               frame.width,
                               frame.height);
            }
            else
            {

                context.drawImage(this.texture.baseTexture.source,
                               frame.x,
                               frame.y,
                               frame.width,
                               frame.height,
                               (this.anchor.x) * -frame.width,
                               (this.anchor.y) * -frame.height,
                               frame.width,
                               frame.height);
            }

        }
    }

    // OVERWRITE
    for(var i=0,j=this.children.length; i<j; i++)
    {
        var child = this.children[i];
        child._renderCanvas(renderSession);
    }

    if(this._mask)
    {
        renderSession.maskManager.popMask(renderSession.context);
    }
};

// some helper functions..

/**
 *
 * Helper function that creates a sprite that will contain a texture from the TextureCache based on the frameId
 * The frame ids are created when a Texture packer file has been loaded
 *
 * @method fromFrame
 * @static
 * @param frameId {String} The frame Id of the texture in the cache
 * @return {Sprite} A new Sprite using a texture from the texture cache matching the frameId
 */
PIXI.Sprite.fromFrame = function(frameId)
{
    var texture = PIXI.TextureCache[frameId];
    if(!texture) throw new Error('The frameId "' + frameId + '" does not exist in the texture cache' + this);
    return new PIXI.Sprite(texture);
};

/**
 *
 * Helper function that creates a sprite that will contain a texture based on an image url
 * If the image is not in the texture cache it will be loaded
 *
 * @method fromImage
 * @static
 * @param imageId {String} The image url of the texture
 * @return {Sprite} A new Sprite using a texture from the texture cache matching the image id
 */
PIXI.Sprite.fromImage = function(imageId)
{
    var texture = PIXI.Texture.fromImage(imageId);
    return new PIXI.Sprite(texture);
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * A MovieClip is a simple way to display an animation depicted by a list of textures.
 *
 * @class MovieClip
 * @extends Sprite
 * @constructor
 * @param textures {Array<Texture>} an array of {Texture} objects that make up the animation
 */
PIXI.MovieClip = function(textures)
{
    PIXI.Sprite.call(this, textures[0]);

    /**
     * The array of textures that make up the animation
     *
     * @property textures
     * @type Array
     */
    this.textures = textures;

    /**
     * The speed that the MovieClip will play at. Higher is faster, lower is slower
     *
     * @property animationSpeed
     * @type Number
     * @default 1
     */
    this.animationSpeed = 1;

    /**
     * Whether or not the movie clip repeats after playing.
     *
     * @property loop
     * @type Boolean
     * @default true
     */
    this.loop = true;

    /**
     * Function to call when a MovieClip finishes playing
     *
     * @property onComplete
     * @type Function
     */
    this.onComplete = null;

    /**
     * [read-only] The index MovieClips current frame (this may not have to be a whole number)
     *
     * @property currentFrame
     * @type Number
     * @default 0
     * @readOnly
     */
    this.currentFrame = 0;

    /**
     * [read-only] Indicates if the MovieClip is currently playing
     *
     * @property playing
     * @type Boolean
     * @readOnly
     */
    this.playing = false;
};

// constructor
PIXI.MovieClip.prototype = Object.create( PIXI.Sprite.prototype );
PIXI.MovieClip.prototype.constructor = PIXI.MovieClip;

/**
* [read-only] totalFrames is the total number of frames in the MovieClip. This is the same as number of textures
* assigned to the MovieClip.
*
* @property totalFrames
* @type Number
* @default 0
* @readOnly
*/
Object.defineProperty( PIXI.MovieClip.prototype, 'totalFrames', {
    get: function() {

        return this.textures.length;
    }
});


/**
 * Stops the MovieClip
 *
 * @method stop
 */
PIXI.MovieClip.prototype.stop = function()
{
    this.playing = false;
};

/**
 * Plays the MovieClip
 *
 * @method play
 */
PIXI.MovieClip.prototype.play = function()
{
    this.playing = true;
};

/**
 * Stops the MovieClip and goes to a specific frame
 *
 * @method gotoAndStop
 * @param frameNumber {Number} frame index to stop at
 */
PIXI.MovieClip.prototype.gotoAndStop = function(frameNumber)
{
    this.playing = false;
    this.currentFrame = frameNumber;
    var round = (this.currentFrame + 0.5) | 0;
    this.setTexture(this.textures[round % this.textures.length]);
};

/**
 * Goes to a specific frame and begins playing the MovieClip
 *
 * @method gotoAndPlay
 * @param frameNumber {Number} frame index to start at
 */
PIXI.MovieClip.prototype.gotoAndPlay = function(frameNumber)
{
    this.currentFrame = frameNumber;
    this.playing = true;
};

/*
 * Updates the object transform for rendering
 *
 * @method updateTransform
 * @private
 */
PIXI.MovieClip.prototype.updateTransform = function()
{
    PIXI.Sprite.prototype.updateTransform.call(this);

    if(!this.playing)return;

    this.currentFrame += this.animationSpeed;

    var round = (this.currentFrame + 0.5) | 0;

    if(this.loop || round < this.textures.length)
    {
        this.setTexture(this.textures[round % this.textures.length]);
    }
    else if(round >= this.textures.length)
    {
        this.gotoAndStop(this.textures.length - 1);
        if(this.onComplete)
        {
            this.onComplete();
        }
    }
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */



PIXI.FilterBlock = function()
{
    this.visible = true;
    this.renderable = true;
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * A Text Object will create a line(s) of text to split a line you can use '\n'
 *
 * @class Text
 * @extends Sprite
 * @constructor
 * @param text {String} The copy that you would like the text to display
 * @param [style] {Object} The style parameters
 * @param [style.font] {String} default 'bold 20pt Arial' The style and size of the font
 * @param [style.fill='black'] {Object} A canvas fillstyle that will be used on the text eg 'red', '#00FF00'
 * @param [style.align='left'] {String} An alignment of the multiline text ('left', 'center' or 'right')
 * @param [style.stroke] {String} A canvas fillstyle that will be used on the text stroke eg 'blue', '#FCFF00'
 * @param [style.strokeThickness=0] {Number} A number that represents the thickness of the stroke. Default is 0 (no stroke)
 * @param [style.wordWrap=false] {Boolean} Indicates if word wrap should be used
 * @param [style.wordWrapWidth=100] {Number} The width at which text will wrap
 */
PIXI.Text = function(text, style)
{
    this.canvas = document.createElement('canvas');
    this.context = this.canvas.getContext('2d');
    PIXI.Sprite.call(this, PIXI.Texture.fromCanvas(this.canvas));

    this.setText(text);
    this.setStyle(style);

    this.updateText();
    this.dirty = false;
};

// constructor
PIXI.Text.prototype = Object.create(PIXI.Sprite.prototype);
PIXI.Text.prototype.constructor = PIXI.Text;

/**
 * Set the style of the text
 *
 * @method setStyle
 * @param [style] {Object} The style parameters
 * @param [style.font='bold 20pt Arial'] {String} The style and size of the font
 * @param [style.fill='black'] {Object} A canvas fillstyle that will be used on the text eg 'red', '#00FF00'
 * @param [style.align='left'] {String} An alignment of the multiline text ('left', 'center' or 'right')
 * @param [style.stroke='black'] {String} A canvas fillstyle that will be used on the text stroke eg 'blue', '#FCFF00'
 * @param [style.strokeThickness=0] {Number} A number that represents the thickness of the stroke. Default is 0 (no stroke)
 * @param [style.wordWrap=false] {Boolean} Indicates if word wrap should be used
 * @param [style.wordWrapWidth=100] {Number} The width at which text will wrap
 */
PIXI.Text.prototype.setStyle = function(style)
{
    style = style || {};
    style.font = style.font || 'bold 20pt Arial';
    style.fill = style.fill || 'black';
    style.align = style.align || 'left';
    style.stroke = style.stroke || 'black'; //provide a default, see: https://github.com/GoodBoyDigital/pixi.js/issues/136
    style.strokeThickness = style.strokeThickness || 0;
    style.wordWrap = style.wordWrap || false;
    style.wordWrapWidth = style.wordWrapWidth || 100;
    this.style = style;
    this.dirty = true;
};

/**
 * Set the copy for the text object. To split a line you can use '\n'
 *
 * @method setText
 * @param {String} text The copy that you would like the text to display
 */
PIXI.Text.prototype.setText = function(text)
{
    this.text = text.toString() || ' ';
    this.dirty = true;

};

/**
 * Renders text
 *
 * @method updateText
 * @private
 */
PIXI.Text.prototype.updateText = function()
{
    this.context.font = this.style.font;

    var outputText = this.text;

    // word wrap
    // preserve original text
    if(this.style.wordWrap)outputText = this.wordWrap(this.text);

    //split text into lines
    var lines = outputText.split(/(?:\r\n|\r|\n)/);

    //calculate text width
    var lineWidths = [];
    var maxLineWidth = 0;
    for (var i = 0; i < lines.length; i++)
    {
        var lineWidth = this.context.measureText(lines[i]).width;
        lineWidths[i] = lineWidth;
        maxLineWidth = Math.max(maxLineWidth, lineWidth);
    }
    this.canvas.width = maxLineWidth + this.style.strokeThickness;

    //calculate text height
    var lineHeight = this.determineFontHeight('font: ' + this.style.font  + ';') + this.style.strokeThickness;
    this.canvas.height = lineHeight * lines.length;

    if(navigator.isCocoonJS) this.context.clearRect(0,0,this.canvas.width,this.canvas.height);

    //set canvas text styles
    this.context.fillStyle = this.style.fill;
    this.context.font = this.style.font;

    this.context.strokeStyle = this.style.stroke;
    this.context.lineWidth = this.style.strokeThickness;

    this.context.textBaseline = 'top';

    //draw lines line by line
    for (i = 0; i < lines.length; i++)
    {
        var linePosition = new PIXI.Point(this.style.strokeThickness / 2, this.style.strokeThickness / 2 + i * lineHeight);

        if(this.style.align === 'right')
        {
            linePosition.x += maxLineWidth - lineWidths[i];
        }
        else if(this.style.align === 'center')
        {
            linePosition.x += (maxLineWidth - lineWidths[i]) / 2;
        }

        if(this.style.stroke && this.style.strokeThickness)
        {
            this.context.strokeText(lines[i], linePosition.x, linePosition.y);
        }

        if(this.style.fill)
        {
            this.context.fillText(lines[i], linePosition.x, linePosition.y);
        }
    }

    this.updateTexture();
};

/**
 * Updates texture size based on canvas size
 *
 * @method updateTexture
 * @private
 */
PIXI.Text.prototype.updateTexture = function()
{
    this.texture.baseTexture.width = this.canvas.width;
    this.texture.baseTexture.height = this.canvas.height;
    this.texture.frame.width = this.canvas.width;
    this.texture.frame.height = this.canvas.height;

    this._width = this.canvas.width;
    this._height = this.canvas.height;

    this.requiresUpdate =  true;
};

PIXI.Text.prototype._renderWebGL = function(renderSession)
{
    if(this.requiresUpdate)
    {
        this.requiresUpdate = false;
        PIXI.updateWebGLTexture(this.texture.baseTexture, renderSession.gl);
    }

    PIXI.Sprite.prototype._renderWebGL.call(this, renderSession);
};

/**
 * Updates the transfor of this object
 *
 * @method updateTransform
 * @private
 */
PIXI.Text.prototype.updateTransform = function()
{
    if(this.dirty)
    {
        this.updateText();
        this.dirty = false;
    }

    PIXI.Sprite.prototype.updateTransform.call(this);
};

/*
 * http://stackoverflow.com/users/34441/ellisbben
 * great solution to the problem!
 *
 * @method determineFontHeight
 * @param fontStyle {Object}
 * @private
 */
PIXI.Text.prototype.determineFontHeight = function(fontStyle)
{
    // build a little reference dictionary so if the font style has been used return a
    // cached version...
    var result = PIXI.Text.heightCache[fontStyle];

    if(!result)
    {
        var body = document.getElementsByTagName('body')[0];
        var dummy = document.createElement('div');
        var dummyText = document.createTextNode('M');
        dummy.appendChild(dummyText);
        dummy.setAttribute('style', fontStyle + ';position:absolute;top:0;left:0');
        body.appendChild(dummy);

        result = dummy.offsetHeight;
        PIXI.Text.heightCache[fontStyle] = result;

        body.removeChild(dummy);
    }

    return result;
};

/**
 * Applies newlines to a string to have it optimally fit into the horizontal
 * bounds set by the Text object's wordWrapWidth property.
 *
 * @method wordWrap
 * @param text {String}
 * @private
 */
PIXI.Text.prototype.wordWrap = function(text)
{
    // Greedy wrapping algorithm that will wrap words as the line grows longer
    // than its horizontal bounds.
    var result = '';
    var lines = text.split('\n');
    for (var i = 0; i < lines.length; i++)
    {
        var spaceLeft = this.style.wordWrapWidth;
        var words = lines[i].split(' ');
        for (var j = 0; j < words.length; j++)
        {
            var wordWidth = this.context.measureText(words[j]).width;
            var wordWidthWithSpace = wordWidth + this.context.measureText(' ').width;
            if(wordWidthWithSpace > spaceLeft)
            {
                // Skip printing the newline if it's the first word of the line that is
                // greater than the word wrap width.
                if(j > 0)
                {
                    result += '\n';
                }
                result += words[j] + ' ';
                spaceLeft = this.style.wordWrapWidth - wordWidth;
            }
            else
            {
                spaceLeft -= wordWidthWithSpace;
                result += words[j] + ' ';
            }
        }
        result += '\n';
    }
    return result;
};

/**
 * Destroys this text object
 *
 * @method destroy
 * @param destroyTexture {Boolean}
 */
PIXI.Text.prototype.destroy = function(destroyTexture)
{
    if(destroyTexture)
    {
        this.texture.destroy();
    }

};

PIXI.Text.heightCache = {};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * A Text Object will create a line(s) of text using bitmap font. To split a line you can use '\n', '\r' or '\r\n'
 * You can generate the fnt files using
 * http://www.angelcode.com/products/bmfont/ for windows or
 * http://www.bmglyph.com/ for mac.
 *
 * @class BitmapText
 * @extends DisplayObjectContainer
 * @constructor
 * @param text {String} The copy that you would like the text to display
 * @param style {Object} The style parameters
 * @param style.font {String} The size (optional) and bitmap font id (required) eq 'Arial' or '20px Arial' (must have loaded previously)
 * @param [style.align='left'] {String} An alignment of the multiline text ('left', 'center' or 'right')
 */
PIXI.BitmapText = function(text, style)
{
    PIXI.DisplayObjectContainer.call(this);

    this.setText(text);
    this.setStyle(style);
    this.updateText();
    this.dirty = false;
};

// constructor
PIXI.BitmapText.prototype = Object.create(PIXI.DisplayObjectContainer.prototype);
PIXI.BitmapText.prototype.constructor = PIXI.BitmapText;

/**
 * Set the copy for the text object
 *
 * @method setText
 * @param text {String} The copy that you would like the text to display
 */
PIXI.BitmapText.prototype.setText = function(text)
{
    this.text = text || ' ';
    this.dirty = true;
};

/**
 * Set the style of the text
 *
 * @method setStyle
 * @param style {Object} The style parameters
 * @param style.font {String} The size (optional) and bitmap font id (required) eq 'Arial' or '20px Arial' (must have loaded previously)
 * @param [style.align='left'] {String} An alignment of the multiline text ('left', 'center' or 'right')
 */
PIXI.BitmapText.prototype.setStyle = function(style)
{
    style = style || {};
    style.align = style.align || 'left';
    this.style = style;

    var font = style.font.split(' ');
    this.fontName = font[font.length - 1];
    this.fontSize = font.length >= 2 ? parseInt(font[font.length - 2], 10) : PIXI.BitmapText.fonts[this.fontName].size;

    this.dirty = true;
};

/**
 * Renders text
 *
 * @method updateText
 * @private
 */
PIXI.BitmapText.prototype.updateText = function()
{
    var data = PIXI.BitmapText.fonts[this.fontName];
    var pos = new PIXI.Point();
    var prevCharCode = null;
    var chars = [];
    var maxLineWidth = 0;
    var lineWidths = [];
    var line = 0;
    var scale = this.fontSize / data.size;
    for(var i = 0; i < this.text.length; i++)
    {
        var charCode = this.text.charCodeAt(i);
        if(/(?:\r\n|\r|\n)/.test(this.text.charAt(i)))
        {
            lineWidths.push(pos.x);
            maxLineWidth = Math.max(maxLineWidth, pos.x);
            line++;

            pos.x = 0;
            pos.y += data.lineHeight;
            prevCharCode = null;
            continue;
        }

        var charData = data.chars[charCode];
        if(!charData) continue;

        if(prevCharCode && charData[prevCharCode])
        {
            pos.x += charData.kerning[prevCharCode];
        }
        chars.push({texture:charData.texture, line: line, charCode: charCode, position: new PIXI.Point(pos.x + charData.xOffset, pos.y + charData.yOffset)});
        pos.x += charData.xAdvance;

        prevCharCode = charCode;
    }

    lineWidths.push(pos.x);
    maxLineWidth = Math.max(maxLineWidth, pos.x);

    var lineAlignOffsets = [];
    for(i = 0; i <= line; i++)
    {
        var alignOffset = 0;
        if(this.style.align === 'right')
        {
            alignOffset = maxLineWidth - lineWidths[i];
        }
        else if(this.style.align === 'center')
        {
            alignOffset = (maxLineWidth - lineWidths[i]) / 2;
        }
        lineAlignOffsets.push(alignOffset);
    }

    for(i = 0; i < chars.length; i++)
    {
        var c = new PIXI.Sprite(chars[i].texture); //PIXI.Sprite.fromFrame(chars[i].charCode);
        c.position.x = (chars[i].position.x + lineAlignOffsets[chars[i].line]) * scale;
        c.position.y = chars[i].position.y * scale;
        c.scale.x = c.scale.y = scale;
        this.addChild(c);
    }

    this.width = maxLineWidth * scale;
    this.height = (pos.y + data.lineHeight) * scale;
};

/**
 * Updates the transfor of this object
 *
 * @method updateTransform
 * @private
 */
PIXI.BitmapText.prototype.updateTransform = function()
{
    if(this.dirty)
    {
        while(this.children.length > 0)
        {
            this.removeChild(this.getChildAt(0));
        }
        this.updateText();

        this.dirty = false;
    }

    PIXI.DisplayObjectContainer.prototype.updateTransform.call(this);
};

PIXI.BitmapText.fonts = {};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

 /**
 * The interaction manager deals with mouse and touch events. Any DisplayObject can be interactive
 * This manager also supports multitouch.
 *
 * @class InteractionManager
 * @constructor
 * @param stage {Stage} The stage to handle interactions
 */
PIXI.InteractionManager = function(stage)
{
    /**
     * a refference to the stage
     *
     * @property stage
     * @type Stage
     */
    this.stage = stage;

    /**
     * the mouse data
     *
     * @property mouse
     * @type InteractionData
     */
    this.mouse = new PIXI.InteractionData();

    /**
     * an object that stores current touches (InteractionData) by id reference
     *
     * @property touchs
     * @type Object
     */
    this.touchs = {};

    // helpers
    this.tempPoint = new PIXI.Point();
    //this.tempMatrix =  mat3.create();

    this.mouseoverEnabled = true;

    //tiny little interactiveData pool!
    this.pool = [];

    this.interactiveItems = [];
    this.interactionDOMElement = null;

    //this will make it so that you dont have to call bind all the time
    this.onMouseMove = this.onMouseMove.bind( this );
    this.onMouseDown = this.onMouseDown.bind(this);
    this.onMouseOut = this.onMouseOut.bind(this);
    this.onMouseUp = this.onMouseUp.bind(this);

    this.onTouchStart = this.onTouchStart.bind(this);
    this.onTouchEnd = this.onTouchEnd.bind(this);
    this.onTouchMove = this.onTouchMove.bind(this);
    this.last = 0;

    this.currentCursor = 'inherit';
};

// constructor
PIXI.InteractionManager.prototype.constructor = PIXI.InteractionManager;

/**
 * Collects an interactive sprite recursively to have their interactions managed
 *
 * @method collectInteractiveSprite
 * @param displayObject {DisplayObject} the displayObject to collect
 * @param iParent {DisplayObject}
 * @private
 */
PIXI.InteractionManager.prototype.collectInteractiveSprite = function(displayObject, iParent)
{
    var children = displayObject.children;
    var length = children.length;

    /// make an interaction tree... {item.__interactiveParent}
    for (var i = length-1; i >= 0; i--)
    {
        var child = children[i];

//      if(child.visible) {
        // push all interactive bits
        if(child.interactive)
        {
            iParent.interactiveChildren = true;
            //child.__iParent = iParent;
            this.interactiveItems.push(child);

            if(child.children.length > 0)
            {
                this.collectInteractiveSprite(child, child);
            }
        }
        else
        {
            child.__iParent = null;

            if(child.children.length > 0)
            {
                this.collectInteractiveSprite(child, iParent);
            }
        }
//      }
    }
};

/**
 * Sets the target for event delegation
 *
 * @method setTarget
 * @param target {WebGLRenderer|CanvasRenderer} the renderer to bind events to
 * @private
 */
PIXI.InteractionManager.prototype.setTarget = function(target)
{
    this.target = target;

    //check if the dom element has been set. If it has don't do anything
    if( this.interactionDOMElement === null ) {

        this.setTargetDomElement( target.view );
    }

    document.body.addEventListener('mouseup',  this.onMouseUp, true);
};


/**
 * Sets the dom element which will receive mouse/touch events. This is useful for when you have other DOM
 * elements ontop of the renderers Canvas element. With this you'll be able to delegate another dom element
 * to receive those events
 *
 * @method setTargetDomElement
 * @param domElement {DOMElement} the dom element which will receive mouse and touch events
 * @private
 */
PIXI.InteractionManager.prototype.setTargetDomElement = function(domElement)
{
    //remove previouse listeners
    if( this.interactionDOMElement !== null )
    {
        this.interactionDOMElement.style['-ms-content-zooming'] = '';
        this.interactionDOMElement.style['-ms-touch-action'] = '';

        this.interactionDOMElement.removeEventListener('mousemove',  this.onMouseMove, true);
        this.interactionDOMElement.removeEventListener('mousedown',  this.onMouseDown, true);
        this.interactionDOMElement.removeEventListener('mouseout',   this.onMouseOut, true);

        // aint no multi touch just yet!
        this.interactionDOMElement.removeEventListener('touchstart', this.onTouchStart, true);
        this.interactionDOMElement.removeEventListener('touchend', this.onTouchEnd, true);
        this.interactionDOMElement.removeEventListener('touchmove', this.onTouchMove, true);
    }


    if (window.navigator.msPointerEnabled)
    {
        // time to remove some of that zoom in ja..
        domElement.style['-ms-content-zooming'] = 'none';
        domElement.style['-ms-touch-action'] = 'none';

        // DO some window specific touch!
    }

    this.interactionDOMElement = domElement;

    domElement.addEventListener('mousemove',  this.onMouseMove, true);
    domElement.addEventListener('mousedown',  this.onMouseDown, true);
    domElement.addEventListener('mouseout',   this.onMouseOut, true);

    // aint no multi touch just yet!
    domElement.addEventListener('touchstart', this.onTouchStart, true);
    domElement.addEventListener('touchend', this.onTouchEnd, true);
    domElement.addEventListener('touchmove', this.onTouchMove, true);
};

/**
 * updates the state of interactive objects
 *
 * @method update
 * @private
 */
PIXI.InteractionManager.prototype.update = function()
{
    if(!this.target)return;

    // frequency of 30fps??
    var now = Date.now();
    var diff = now - this.last;
    diff = (diff * 30) / 1000;
    if(diff < 1)return;
    this.last = now;
    //

    var i = 0;

    // ok.. so mouse events??
    // yes for now :)
    // OPTIMSE - how often to check??
    if(this.dirty)
    {
        this.dirty = false;

        var len = this.interactiveItems.length;

        for (i = 0; i < len; i++) {
            this.interactiveItems[i].interactiveChildren = false;
        }

        this.interactiveItems = [];

        if(this.stage.interactive)this.interactiveItems.push(this.stage);
        // go through and collect all the objects that are interactive..
        this.collectInteractiveSprite(this.stage, this.stage);
    }

    // loop through interactive objects!
    var length = this.interactiveItems.length;

   // return;

    for (i = 0; i < length; i++)
    {
        var item = this.interactiveItems[i];


        //if(!item.visible)continue;

        // OPTIMISATION - only calculate every time if the mousemove function exists..
        // OK so.. does the object have any other interactive functions?
        // hit-test the clip!


        if(item.mouseover || item.mouseout || item.buttonMode)
        {
            // ok so there are some functions so lets hit test it..
            item.__hit = this.hitTest(item, this.mouse);
            this.mouse.target = item;
            // ok so deal with interactions..
            // loks like there was a hit!
            if(item.__hit)
            {
                if(item.buttonMode) this.currentCursor = item.defaultCursor;

                if(!item.__isOver)
                {

                    if(item.mouseover)item.mouseover(this.mouse);
                    item.__isOver = true;
                }
            }
            else
            {
                if(item.__isOver)
                {
                    // roll out!
                    if(item.mouseout)item.mouseout(this.mouse);
                    item.__isOver = false;
                }
            }
        }
        // --->
    }


    if(this.currentCursor !== this.interactionDOMElement.style.cursor)
    {
        this.interactionDOMElement.style.cursor = this.currentCursor;
    }
};

/**
 * Is called when the mouse moves accross the renderer element
 *
 * @method onMouseMove
 * @param event {Event} The DOM event of the mouse moving
 * @private
 */
PIXI.InteractionManager.prototype.onMouseMove = function(event)
{
    this.mouse.originalEvent = event || window.event; //IE uses window.event
    // TODO optimize by not check EVERY TIME! maybe half as often? //
    var rect = this.interactionDOMElement.getBoundingClientRect();

    this.mouse.global.x = (event.clientX - rect.left) * (this.target.width / rect.width);
    this.mouse.global.y = (event.clientY - rect.top) * ( this.target.height / rect.height);

    var length = this.interactiveItems.length;

    for (var i = 0; i < length; i++)
    {
        var item = this.interactiveItems[i];

        if(item.mousemove)
        {
            //call the function!
            item.mousemove(this.mouse);
        }
    }
};

/**
 * Is called when the mouse button is pressed down on the renderer element
 *
 * @method onMouseDown
 * @param event {Event} The DOM event of a mouse button being pressed down
 * @private
 */
PIXI.InteractionManager.prototype.onMouseDown = function(event)
{
    this.mouse.originalEvent = event || window.event; //IE uses window.event

    // loop through inteaction tree...
    // hit test each item! ->
    // get interactive items under point??
    //stage.__i
    var length = this.interactiveItems.length;

    // while
    // hit test
    for (var i = 0; i < length; i++)
    {
        var item = this.interactiveItems[i];

        if(item.mousedown || item.click)
        {
            item.__mouseIsDown = true;
            item.__hit = this.hitTest(item, this.mouse);

            if(item.__hit)
            {
                //call the function!
                if(item.mousedown)item.mousedown(this.mouse);
                item.__isDown = true;

                // just the one!
                if(!item.interactiveChildren)break;
            }
        }
    }
};


PIXI.InteractionManager.prototype.onMouseOut = function()
{
    var length = this.interactiveItems.length;

    this.currentCursor = 'inherit';

    for (var i = 0; i < length; i++)
    {
        var item = this.interactiveItems[i];

        if(item.__isOver)
        {
            this.mouse.target = item;
            if(item.mouseout)item.mouseout(this.mouse);
            item.__isOver = false;
        }
    }
};

/**
 * Is called when the mouse button is released on the renderer element
 *
 * @method onMouseUp
 * @param event {Event} The DOM event of a mouse button being released
 * @private
 */
PIXI.InteractionManager.prototype.onMouseUp = function(event)
{
    this.mouse.originalEvent = event || window.event; //IE uses window.event

    var length = this.interactiveItems.length;
    var up = false;

    for (var i = 0; i < length; i++)
    {
        var item = this.interactiveItems[i];

        if(item.mouseup || item.mouseupoutside || item.click)
        {
            item.__hit = this.hitTest(item, this.mouse);

            if(item.__hit && !up)
            {
                //call the function!
                if(item.mouseup)
                {
                    item.mouseup(this.mouse);
                }
                if(item.__isDown)
                {
                    if(item.click)item.click(this.mouse);
                }

                if(!item.interactiveChildren)up = true;
            }
            else
            {
                if(item.__isDown)
                {
                    if(item.mouseupoutside)item.mouseupoutside(this.mouse);
                }
            }

            item.__isDown = false;
        }
    }
};

/**
 * Tests if the current mouse coords hit a sprite
 *
 * @method hitTest
 * @param item {DisplayObject} The displayObject to test for a hit
 * @param interactionData {InteractionData} The interactiondata object to update in the case of a hit
 * @private
 */
PIXI.InteractionManager.prototype.hitTest = function(item, interactionData)
{
    var global = interactionData.global;

    if( !item.worldVisible )return false;

    // temp fix for if the element is in a non visible

    var isSprite = (item instanceof PIXI.Sprite),
        worldTransform = item.worldTransform,
        a00 = worldTransform[0], a01 = worldTransform[1], a02 = worldTransform[2],
        a10 = worldTransform[3], a11 = worldTransform[4], a12 = worldTransform[5],
        id = 1 / (a00 * a11 + a01 * -a10),
        x = a11 * id * global.x + -a01 * id * global.y + (a12 * a01 - a02 * a11) * id,
        y = a00 * id * global.y + -a10 * id * global.x + (-a12 * a00 + a02 * a10) * id;

    interactionData.target = item;

    //a sprite or display object with a hit area defined
    if(item.hitArea && item.hitArea.contains) {
        if(item.hitArea.contains(x, y)) {
            //if(isSprite)
            interactionData.target = item;

            return true;
        }

        return false;
    }
    // a sprite with no hitarea defined
    else if(isSprite)
    {
        var width = item.texture.frame.width,
            height = item.texture.frame.height,
            x1 = -width * item.anchor.x,
            y1;

        if(x > x1 && x < x1 + width)
        {
            y1 = -height * item.anchor.y;

            if(y > y1 && y < y1 + height)
            {
                // set the target property if a hit is true!
                interactionData.target = item;
                return true;
            }
        }
    }

    var length = item.children.length;

    for (var i = 0; i < length; i++)
    {
        var tempItem = item.children[i];
        var hit = this.hitTest(tempItem, interactionData);
        if(hit)
        {
            // hmm.. TODO SET CORRECT TARGET?
            interactionData.target = item;
            return true;
        }
    }

    return false;
};

/**
 * Is called when a touch is moved accross the renderer element
 *
 * @method onTouchMove
 * @param event {Event} The DOM event of a touch moving accross the renderer view
 * @private
 */
PIXI.InteractionManager.prototype.onTouchMove = function(event)
{
    var rect = this.interactionDOMElement.getBoundingClientRect();
    var changedTouches = event.changedTouches;
    var touchData;
    var i = 0;

    for (i = 0; i < changedTouches.length; i++)
    {
        var touchEvent = changedTouches[i];
        touchData = this.touchs[touchEvent.identifier];
        touchData.originalEvent =  event || window.event;

        // update the touch position
        touchData.global.x = (touchEvent.clientX - rect.left) * (this.target.width / rect.width);
        touchData.global.y = (touchEvent.clientY - rect.top)  * (this.target.height / rect.height);
        if(navigator.isCocoonJS) {
            touchData.global.x = touchEvent.clientX;
            touchData.global.y = touchEvent.clientY;
        }
    }

    var length = this.interactiveItems.length;
    for (i = 0; i < length; i++)
    {
        var item = this.interactiveItems[i];
        if(item.touchmove)
            item.touchmove(touchData);
    }
};

/**
 * Is called when a touch is started on the renderer element
 *
 * @method onTouchStart
 * @param event {Event} The DOM event of a touch starting on the renderer view
 * @private
 */
PIXI.InteractionManager.prototype.onTouchStart = function(event)
{
    var rect = this.interactionDOMElement.getBoundingClientRect();

    var changedTouches = event.changedTouches;
    for (var i=0; i < changedTouches.length; i++)
    {
        var touchEvent = changedTouches[i];

        var touchData = this.pool.pop();
        if(!touchData)touchData = new PIXI.InteractionData();

        touchData.originalEvent =  event || window.event;

        this.touchs[touchEvent.identifier] = touchData;
        touchData.global.x = (touchEvent.clientX - rect.left) * (this.target.width / rect.width);
        touchData.global.y = (touchEvent.clientY - rect.top)  * (this.target.height / rect.height);
        if(navigator.isCocoonJS) {
            touchData.global.x = touchEvent.clientX;
            touchData.global.y = touchEvent.clientY;
        }

        var length = this.interactiveItems.length;

        for (var j = 0; j < length; j++)
        {
            var item = this.interactiveItems[j];

            if(item.touchstart || item.tap)
            {
                item.__hit = this.hitTest(item, touchData);

                if(item.__hit)
                {
                    //call the function!
                    if(item.touchstart)item.touchstart(touchData);
                    item.__isDown = true;
                    item.__touchData = touchData;

                    if(!item.interactiveChildren)break;
                }
            }
        }
    }
};

/**
 * Is called when a touch is ended on the renderer element
 *
 * @method onTouchEnd
 * @param event {Event} The DOM event of a touch ending on the renderer view
 * @private
 */
PIXI.InteractionManager.prototype.onTouchEnd = function(event)
{
    //this.mouse.originalEvent = event || window.event; //IE uses window.event
    var rect = this.interactionDOMElement.getBoundingClientRect();
    var changedTouches = event.changedTouches;

    for (var i=0; i < changedTouches.length; i++)
    {
        var touchEvent = changedTouches[i];
        var touchData = this.touchs[touchEvent.identifier];
        var up = false;
        touchData.global.x = (touchEvent.clientX - rect.left) * (this.target.width / rect.width);
        touchData.global.y = (touchEvent.clientY - rect.top)  * (this.target.height / rect.height);
        if(navigator.isCocoonJS) {
            touchData.global.x = touchEvent.clientX;
            touchData.global.y = touchEvent.clientY;
        }

        var length = this.interactiveItems.length;
        for (var j = 0; j < length; j++)
        {
            var item = this.interactiveItems[j];
            var itemTouchData = item.__touchData; // <-- Here!
            item.__hit = this.hitTest(item, touchData);

            if(itemTouchData === touchData)
            {
                // so this one WAS down...
                touchData.originalEvent = event || window.event;
                // hitTest??

                if(item.touchend || item.tap)
                {
                    if(item.__hit && !up)
                    {
                        if(item.touchend)item.touchend(touchData);
                        if(item.__isDown)
                        {
                            if(item.tap)item.tap(touchData);
                        }

                        if(!item.interactiveChildren)up = true;
                    }
                    else
                    {
                        if(item.__isDown)
                        {
                            if(item.touchendoutside)item.touchendoutside(touchData);
                        }
                    }

                    item.__isDown = false;
                }

                item.__touchData = null;

            }
            /*
            else
            {

            }
            */
        }
        // remove the touch..
        this.pool.push(touchData);
        this.touchs[touchEvent.identifier] = null;
    }
};

/**
 * Holds all information related to an Interaction event
 *
 * @class InteractionData
 * @constructor
 */
PIXI.InteractionData = function()
{
    /**
     * This point stores the global coords of where the touch/mouse event happened
     *
     * @property global
     * @type Point
     */
    this.global = new PIXI.Point();

    // this is here for legacy... but will remove
    this.local = new PIXI.Point();

    /**
     * The target Sprite that was interacted with
     *
     * @property target
     * @type Sprite
     */
    this.target = null;

    /**
     * When passed to an event handler, this will be the original DOM Event that was captured
     *
     * @property originalEvent
     * @type Event
     */
    this.originalEvent = null;
};

/**
 * This will return the local coords of the specified displayObject for this InteractionData
 *
 * @method getLocalPosition
 * @param displayObject {DisplayObject} The DisplayObject that you would like the local coords off
 * @return {Point} A point containing the coords of the InteractionData position relative to the DisplayObject
 */
PIXI.InteractionData.prototype.getLocalPosition = function(displayObject)
{
    var worldTransform = displayObject.worldTransform;
    var global = this.global;

    // do a cheeky transform to get the mouse coords;
    var a00 = worldTransform[0], a01 = worldTransform[1], a02 = worldTransform[2],
        a10 = worldTransform[3], a11 = worldTransform[4], a12 = worldTransform[5],
        id = 1 / (a00 * a11 + a01 * -a10);
    // set the mouse coords...
    return new PIXI.Point(a11 * id * global.x + -a01 * id * global.y + (a12 * a01 - a02 * a11) * id,
                               a00 * id * global.y + -a10 * id * global.x + (-a12 * a00 + a02 * a10) * id);
};

// constructor
PIXI.InteractionData.prototype.constructor = PIXI.InteractionData;

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * A Stage represents the root of the display tree. Everything connected to the stage is rendered
 *
 * @class Stage
 * @extends DisplayObjectContainer
 * @constructor
 * @param backgroundColor {Number} the background color of the stage, easiest way to pass this in is in hex format
 *      like: 0xFFFFFF for white
 */
PIXI.Stage = function(backgroundColor)
{
    PIXI.DisplayObjectContainer.call( this );

    /**
     * [read-only] Current transform of the object based on world (parent) factors
     *
     * @property worldTransform
     * @type Mat3
     * @readOnly
     * @private
     */
    this.worldTransform = PIXI.mat3.create();

    /**
     * Whether or not the stage is interactive
     *
     * @property interactive
     * @type Boolean
     */
    this.interactive = true;

    /**
     * The interaction manage for this stage, manages all interactive activity on the stage
     *
     * @property interactive
     * @type InteractionManager
     */
    this.interactionManager = new PIXI.InteractionManager(this);

    /**
     * Whether the stage is dirty and needs to have interactions updated
     *
     * @property dirty
     * @type Boolean
     * @private
     */
    this.dirty = true;

    //the stage is it's own stage
    this.stage = this;

    //optimize hit detection a bit
    this.stage.hitArea = new PIXI.Rectangle(0,0,100000, 100000);

    this.setBackgroundColor(backgroundColor);
};

// constructor
PIXI.Stage.prototype = Object.create( PIXI.DisplayObjectContainer.prototype );
PIXI.Stage.prototype.constructor = PIXI.Stage;

/**
 * Sets another DOM element which can receive mouse/touch interactions instead of the default Canvas element.
 * This is useful for when you have other DOM elements ontop of the Canvas element.
 *
 * @method setInteractionDelegate
 * @param domElement {DOMElement} This new domElement which will receive mouse/touch events
 */
PIXI.Stage.prototype.setInteractionDelegate = function(domElement)
{
    this.interactionManager.setTargetDomElement( domElement );
};

/*
 * Updates the object transform for rendering
 *
 * @method updateTransform
 * @private
 */
PIXI.Stage.prototype.updateTransform = function()
{
    this.worldAlpha = 1;

    for(var i=0,j=this.children.length; i<j; i++)
    {
        this.children[i].updateTransform();
    }

    if(this.dirty)
    {
        this.dirty = false;
        // update interactive!
        this.interactionManager.dirty = true;
    }

    if(this.interactive)this.interactionManager.update();
};

/**
 * Sets the background color for the stage
 *
 * @method setBackgroundColor
 * @param backgroundColor {Number} the color of the background, easiest way to pass this in is in hex format
 *      like: 0xFFFFFF for white
 */
PIXI.Stage.prototype.setBackgroundColor = function(backgroundColor)
{
    this.backgroundColor = backgroundColor || 0x000000;
    this.backgroundColorSplit = PIXI.hex2rgb(this.backgroundColor);
    var hex = this.backgroundColor.toString(16);
    hex = '000000'.substr(0, 6 - hex.length) + hex;
    this.backgroundColorString = '#' + hex;
};

/**
 * This will return the point containing global coords of the mouse.
 *
 * @method getMousePosition
 * @return {Point} The point containing the coords of the global InteractionData position.
 */
PIXI.Stage.prototype.getMousePosition = function()
{
    return this.interactionManager.mouse.global;
};

// http://paulirish.com/2011/requestanimationframe-for-smart-animating/
// http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating

// requestAnimationFrame polyfill by Erik Möller. fixes from Paul Irish and Tino Zijdel

// MIT license

/**
 * A polyfill for requestAnimationFrame
 *
 * @method requestAnimationFrame
 */
/**
 * A polyfill for cancelAnimationFrame
 *
 * @method cancelAnimationFrame
 */
var lastTime = 0;
var vendors = ['ms', 'moz', 'webkit', 'o'];
for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
    window.requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame'];
    window.cancelAnimationFrame = window[vendors[x] + 'CancelAnimationFrame'] ||
        window[vendors[x] + 'CancelRequestAnimationFrame'];
}

if (!window.requestAnimationFrame) {
    window.requestAnimationFrame = function(callback) {
        var currTime = new Date().getTime();
        var timeToCall = Math.max(0, 16 - (currTime - lastTime));
        var id = window.setTimeout(function() { callback(currTime + timeToCall); },
          timeToCall);
        lastTime = currTime + timeToCall;
        return id;
    };
}

if (!window.cancelAnimationFrame) {
    window.cancelAnimationFrame = function(id) {
        clearTimeout(id);
    };
}

window.requestAnimFrame = window.requestAnimationFrame;

/**
 * Converts a hex color number to an [R, G, B] array
 *
 * @method hex2rgb
 * @param hex {Number}
 */
PIXI.hex2rgb = function(hex) {
    return [(hex >> 16 & 0xFF) / 255, ( hex >> 8 & 0xFF) / 255, (hex & 0xFF)/ 255];
};


PIXI.rgb2hex = function(rgb) {
    return ((rgb[0]*255 << 16) + (rgb[1]*255 << 8) + rgb[2]*255);
};

/**
 * A polyfill for Function.prototype.bind
 *
 * @method bind
 */
if (typeof Function.prototype.bind !== 'function') {
    Function.prototype.bind = (function () {
        var slice = Array.prototype.slice;
        return function (thisArg) {
            var target = this, boundArgs = slice.call(arguments, 1);

            if (typeof target !== 'function') throw new TypeError();

            function bound() {
                var args = boundArgs.concat(slice.call(arguments));
                target.apply(this instanceof bound ? this : thisArg, args);
            }

            bound.prototype = (function F(proto) {
                if (proto) F.prototype = proto;
                if (!(this instanceof F)) return new F();
            })(target.prototype);

            return bound;
        };
    })();
}

/**
 * A wrapper for ajax requests to be handled cross browser
 *
 * @class AjaxRequest
 * @constructor
 */
PIXI.AjaxRequest = function AjaxRequest()
{
    var activexmodes = ['Msxml2.XMLHTTP.6.0', 'Msxml2.XMLHTTP.3.0', 'Microsoft.XMLHTTP']; //activeX versions to check for in IE

    if (window.ActiveXObject)
    { //Test for support for ActiveXObject in IE first (as XMLHttpRequest in IE7 is broken)
        for (var i=0; i<activexmodes.length; i++)
        {
            try{
                return new window.ActiveXObject(activexmodes[i]);
            }
            catch(e) {
                //suppress error
            }
        }
    }
    else if (window.XMLHttpRequest) // if Mozilla, Safari etc
    {
        return new window.XMLHttpRequest();
    }
    else
    {
        return false;
    }
};
/*
PIXI.packColorRGBA = function(r, g, b, a)//r, g, b, a)
{
  //  console.log(r, b, c, d)
  return (Math.floor((r)*63) << 18) | (Math.floor((g)*63) << 12) | (Math.floor((b)*63) << 6);// | (Math.floor((a)*63))
  //  i = i | (Math.floor((a)*63));
   // return i;
   // var r = (i / 262144.0 ) / 64;
   // var g = (i / 4096.0)%64 / 64;
  //  var b = (i / 64.0)%64 / 64;
  //  var a = (i)%64 / 64;

  //  console.log(r, g, b, a);
  //  return i;

};
*/
/*
PIXI.packColorRGB = function(r, g, b)//r, g, b, a)
{
    return (Math.floor((r)*255) << 16) | (Math.floor((g)*255) << 8) | (Math.floor((b)*255));
};

PIXI.unpackColorRGB = function(r, g, b)//r, g, b, a)
{
    return (Math.floor((r)*255) << 16) | (Math.floor((g)*255) << 8) | (Math.floor((b)*255));
};
*/

PIXI.canUseNewCanvasBlendModes = function()
{
    var canvas = document.createElement('canvas');
    canvas.width = 1;
    canvas.height = 1;
    var context = canvas.getContext('2d');
    context.fillStyle = '#000';
    context.fillRect(0,0,1,1);
    context.globalCompositeOperation = 'multiply';
    context.fillStyle = '#fff';
    context.fillRect(0,0,1,1);
    return context.getImageData(0,0,1,1).data[0] === 0;
};

// this function is taken from Starling Framework as its pretty neat ;)
PIXI.getNextPowerOfTwo = function(number)
{
    if (number > 0 && (number & (number - 1)) === 0) // see: http://goo.gl/D9kPj
        return number;
    else
    {
        var result = 1;
        while (result < number) result <<= 1;
        return result;
    }
};



/**
 * https://github.com/mrdoob/eventtarget.js/
 * THankS mr DOob!
 */

/**
 * Adds event emitter functionality to a class
 *
 * @class EventTarget
 * @example
 *      function MyEmitter() {
 *          PIXI.EventTarget.call(this); //mixes in event target stuff
 *      }
 *
 *      var em = new MyEmitter();
 *      em.emit({ type: 'eventName', data: 'some data' });
 */
PIXI.EventTarget = function () {

    var listeners = {};

    this.addEventListener = this.on = function ( type, listener ) {


        if ( listeners[ type ] === undefined ) {

            listeners[ type ] = [];

        }

        if ( listeners[ type ].indexOf( listener ) === - 1 ) {

            listeners[ type ].push( listener );
        }

    };

    this.dispatchEvent = this.emit = function ( event ) {

        if ( !listeners[ event.type ] || !listeners[ event.type ].length ) {

            return;

        }

        for(var i = 0, l = listeners[ event.type ].length; i < l; i++) {

            listeners[ event.type ][ i ]( event );

        }

    };

    this.removeEventListener = this.off = function ( type, listener ) {

        var index = listeners[ type ].indexOf( listener );

        if ( index !== - 1 ) {

            listeners[ type ].splice( index, 1 );

        }

    };

    this.removeAllEventListeners = function( type ) {
        var a = listeners[type];
        if (a)
            a.length = 0;
    };
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * This helper function will automatically detect which renderer you should be using.
 * WebGL is the preferred renderer as it is a lot fastest. If webGL is not supported by
 * the browser then this function will return a canvas renderer
 *
 * @method autoDetectRenderer
 * @static
 * @param width {Number} the width of the renderers view
 * @param height {Number} the height of the renderers view
 * @param view {Canvas} the canvas to use as a view, optional
 * @param transparent=false {Boolean} the transparency of the render view, default false
 * @param antialias=false {Boolean} sets antialias (only applicable in webGL chrome at the moment)
 *
 * antialias
 */
PIXI.autoDetectRenderer = function(width, height, view, transparent, antialias)
{
    if(!width)width = 800;
    if(!height)height = 600;

    // BORROWED from Mr Doob (mrdoob.com)
    var webgl = ( function () { try {
                                    var canvas = document.createElement( 'canvas' );
                                    return !! window.WebGLRenderingContext && ( canvas.getContext( 'webgl' ) || canvas.getContext( 'experimental-webgl' ) );
                                } catch( e ) {
                                    return false;
                                }
                            } )();

    // used to detect ie 11 - no longer required
    /*  if(webgl)
    {
        var ie =  (navigator.userAgent.toLowerCase().indexOf('trident') !== -1);
        webgl = !ie;
    }
    */


    if( webgl )
    {
        return new PIXI.WebGLRenderer(width, height, view, transparent, antialias);
    }

    return  new PIXI.CanvasRenderer(width, height, view, transparent);
};

/*
    PolyK library
    url: http://polyk.ivank.net
    Released under MIT licence.

    Copyright (c) 2012 Ivan Kuckir

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation
    files (the "Software"), to deal in the Software without
    restriction, including without limitation the rights to use,
    copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the
    Software is furnished to do so, subject to the following
    conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
    OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
    HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
    OTHER DEALINGS IN THE SOFTWARE.

    This is an amazing lib!

    slightly modified by mat groves (matgroves.com);
*/

PIXI.PolyK = {};

/**
 * Triangulates shapes for webGL graphic fills
 *
 * @method Triangulate
 * @namespace PolyK
 * @constructor
 */
PIXI.PolyK.Triangulate = function(p)
{
    var sign = true;

    var n = p.length >> 1;
    if(n < 3) return [];

    var tgs = [];
    var avl = [];
    for(var i = 0; i < n; i++) avl.push(i);

    i = 0;
    var al = n;
    while(al > 3)
    {
        var i0 = avl[(i+0)%al];
        var i1 = avl[(i+1)%al];
        var i2 = avl[(i+2)%al];

        var ax = p[2*i0],  ay = p[2*i0+1];
        var bx = p[2*i1],  by = p[2*i1+1];
        var cx = p[2*i2],  cy = p[2*i2+1];

        var earFound = false;
        if(PIXI.PolyK._convex(ax, ay, bx, by, cx, cy, sign))
        {
            earFound = true;
            for(var j = 0; j < al; j++)
            {
                var vi = avl[j];
                if(vi === i0 || vi === i1 || vi === i2) continue;

                if(PIXI.PolyK._PointInTriangle(p[2*vi], p[2*vi+1], ax, ay, bx, by, cx, cy)) {
                    earFound = false;
                    break;
                }
            }
        }

        if(earFound)
        {
            tgs.push(i0, i1, i2);
            avl.splice((i+1)%al, 1);
            al--;
            i = 0;
        }
        else if(i++ > 3*al)
        {
            // need to flip flip reverse it!
            // reset!
            if(sign)
            {
                tgs = [];
                avl = [];
                for(i = 0; i < n; i++) avl.push(i);

                i = 0;
                al = n;

                sign = false;
            }
            else
            {
                window.console.log("PIXI Warning: shape too complex to fill");
                return [];
            }
        }
    }

    tgs.push(avl[0], avl[1], avl[2]);
    return tgs;
};

/**
 * Checks if a point is within a triangle
 *
 * @class _PointInTriangle
 * @namespace PolyK
 * @private
 */
PIXI.PolyK._PointInTriangle = function(px, py, ax, ay, bx, by, cx, cy)
{
    var v0x = cx-ax;
    var v0y = cy-ay;
    var v1x = bx-ax;
    var v1y = by-ay;
    var v2x = px-ax;
    var v2y = py-ay;

    var dot00 = v0x*v0x+v0y*v0y;
    var dot01 = v0x*v1x+v0y*v1y;
    var dot02 = v0x*v2x+v0y*v2y;
    var dot11 = v1x*v1x+v1y*v1y;
    var dot12 = v1x*v2x+v1y*v2y;

    var invDenom = 1 / (dot00 * dot11 - dot01 * dot01);
    var u = (dot11 * dot02 - dot01 * dot12) * invDenom;
    var v = (dot00 * dot12 - dot01 * dot02) * invDenom;

    // Check if point is in triangle
    return (u >= 0) && (v >= 0) && (u + v < 1);
};

/**
 * Checks if a shape is convex
 *
 * @class _convex
 * @namespace PolyK
 * @private
 */
PIXI.PolyK._convex = function(ax, ay, bx, by, cx, cy, sign)
{
    return ((ay-by)*(cx-bx) + (bx-ax)*(cy-by) >= 0) === sign;
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

PIXI.initDefaultShaders = function()
{

  //  PIXI.stripShader = new PIXI.StripShader();
//    PIXI.stripShader.init();

};

PIXI.CompileVertexShader = function(gl, shaderSrc)
{
    return PIXI._CompileShader(gl, shaderSrc, gl.VERTEX_SHADER);
};

PIXI.CompileFragmentShader = function(gl, shaderSrc)
{
    return PIXI._CompileShader(gl, shaderSrc, gl.FRAGMENT_SHADER);
};

PIXI._CompileShader = function(gl, shaderSrc, shaderType)
{
    var src = shaderSrc.join("\n");
    var shader = gl.createShader(shaderType);
    gl.shaderSource(shader, src);
    gl.compileShader(shader);

    if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
        window.console.log(gl.getShaderInfoLog(shader));
        return null;
    }

    return shader;
};

PIXI.compileProgram = function(gl, vertexSrc, fragmentSrc)
{
    //var gl = PIXI.gl;
    var fragmentShader = PIXI.CompileFragmentShader(gl, fragmentSrc);
    var vertexShader = PIXI.CompileVertexShader(gl, vertexSrc);

    var shaderProgram = gl.createProgram();

    gl.attachShader(shaderProgram, vertexShader);
    gl.attachShader(shaderProgram, fragmentShader);
    gl.linkProgram(shaderProgram);

    if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
        window.console.log("Could not initialise shaders");
    }

    return shaderProgram;
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 * @author Richard Davey http://www.photonstorm.com @photonstorm
 */

/**
* @class PIXI.PixiShader
* @constructor
*/
PIXI.PixiShader = function(gl)
{
    this.gl = gl;

    /**
    * @property {any} program - The WebGL program.
    */
    this.program = null;

    /**
    * @property {array} fragmentSrc - The fragment shader.
    */
    this.fragmentSrc = [
        'precision lowp float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform sampler2D uSampler;',
        'void main(void) {',
        '   gl_FragColor = texture2D(uSampler, vTextureCoord) * vColor ;',
        '}'
    ];


    /**
    * @property {number} textureCount - A local texture counter for multi-texture shaders.
    */
    this.textureCount = 0;


    this.init();
};

/**
* @method PIXI.PixiShader#init
*/
PIXI.PixiShader.prototype.init = function()
{

    var gl = this.gl;

    var program = PIXI.compileProgram(gl, this.vertexSrc || PIXI.PixiShader.defaultVertexSrc, this.fragmentSrc);

    gl.useProgram(program);

    // get and store the uniforms for the shader
    this.uSampler = gl.getUniformLocation(program, 'uSampler');
    this.projectionVector = gl.getUniformLocation(program, 'projectionVector');
    this.offsetVector = gl.getUniformLocation(program, 'offsetVector');
    this.dimensions = gl.getUniformLocation(program, 'dimensions');

    // get and store the attributes
    this.aVertexPosition = gl.getAttribLocation(program, 'aVertexPosition');
    this.aTextureCoord = gl.getAttribLocation(program, 'aTextureCoord');
    this.colorAttribute = gl.getAttribLocation(program, 'aColor');


    // Begin worst hack eva //

    // WHY??? ONLY on my chrome pixel the line above returns -1 when using filters?
    // maybe its somthing to do with the current state of the gl context.
    // Im convinced this is a bug in the chrome browser as there is NO reason why this should be returning -1 especially as it only manifests on my chrome pixel
    // If theres any webGL people that know why could happen please help :)
    if(this.colorAttribute === -1)
    {
        this.colorAttribute = 2;
    }

    // End worst hack eva //

    // add those custom shaders!
    for (var key in this.uniforms)
    {
        // get the uniform locations..
        this.uniforms[key].uniformLocation = gl.getUniformLocation(program, key);
    }

    this.initUniforms();

    this.program = program;
};

/**
* Initialises the shader uniform values.
* Uniforms are specified in the GLSL_ES Specification: http://www.khronos.org/registry/webgl/specs/latest/1.0/
* http://www.khronos.org/registry/gles/specs/2.0/GLSL_ES_Specification_1.0.17.pdf
*
* @method PIXI.PixiShader#initUniforms
*/
PIXI.PixiShader.prototype.initUniforms = function()
{
    this.textureCount = 1;
    var gl = this.gl;
    var uniform;

    for (var key in this.uniforms)
    {
        uniform = this.uniforms[key];

        var type = uniform.type;

        if (type === 'sampler2D')
        {
            uniform._init = false;

            if (uniform.value !== null)
            {
                this.initSampler2D(uniform);
            }
        }
        else if (type === 'mat2' || type === 'mat3' || type === 'mat4')
        {
            //  These require special handling
            uniform.glMatrix = true;
            uniform.glValueLength = 1;

            if (type === 'mat2')
            {
                uniform.glFunc = gl.uniformMatrix2fv;
            }
            else if (type === 'mat3')
            {
                uniform.glFunc = gl.uniformMatrix3fv;
            }
            else if (type === 'mat4')
            {
                uniform.glFunc = gl.uniformMatrix4fv;
            }
        }
        else
        {
            //  GL function reference
            uniform.glFunc = gl['uniform' + type];

            if (type === '2f' || type === '2i')
            {
                uniform.glValueLength = 2;
            }
            else if (type === '3f' || type === '3i')
            {
                uniform.glValueLength = 3;
            }
            else if (type === '4f' || type === '4i')
            {
                uniform.glValueLength = 4;
            }
            else
            {
                uniform.glValueLength = 1;
            }
        }
    }

};

/**
* Initialises a Sampler2D uniform (which may only be available later on after initUniforms once the texture is has loaded)
*
* @method PIXI.PixiShader#initSampler2D
*/
PIXI.PixiShader.prototype.initSampler2D = function(uniform)
{
    if (!uniform.value || !uniform.value.baseTexture || !uniform.value.baseTexture.hasLoaded)
    {
        return;
    }

    var gl = this.gl;

    gl.activeTexture(gl['TEXTURE' + this.textureCount]);
    gl.bindTexture(gl.TEXTURE_2D, uniform.value.baseTexture._glTexture);

    //  Extended texture data
    if (uniform.textureData)
    {
        var data = uniform.textureData;

        // GLTexture = mag linear, min linear_mipmap_linear, wrap repeat + gl.generateMipmap(gl.TEXTURE_2D);
        // GLTextureLinear = mag/min linear, wrap clamp
        // GLTextureNearestRepeat = mag/min NEAREST, wrap repeat
        // GLTextureNearest = mag/min nearest, wrap clamp
        // AudioTexture = whatever + luminance + width 512, height 2, border 0
        // KeyTexture = whatever + luminance + width 256, height 2, border 0

        //  magFilter can be: gl.LINEAR, gl.LINEAR_MIPMAP_LINEAR or gl.NEAREST
        //  wrapS/T can be: gl.CLAMP_TO_EDGE or gl.REPEAT

        var magFilter = (data.magFilter) ? data.magFilter : gl.LINEAR;
        var minFilter = (data.minFilter) ? data.minFilter : gl.LINEAR;
        var wrapS = (data.wrapS) ? data.wrapS : gl.CLAMP_TO_EDGE;
        var wrapT = (data.wrapT) ? data.wrapT : gl.CLAMP_TO_EDGE;
        var format = (data.luminance) ? gl.LUMINANCE : gl.RGBA;

        if (data.repeat)
        {
            wrapS = gl.REPEAT;
            wrapT = gl.REPEAT;
        }

        gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, false);

        if (data.width)
        {
            var width = (data.width) ? data.width : 512;
            var height = (data.height) ? data.height : 2;
            var border = (data.border) ? data.border : 0;

            // void texImage2D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, ArrayBufferView? pixels);
            gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, border, format, gl.UNSIGNED_BYTE, null);
        }
        else
        {
            //  void texImage2D(GLenum target, GLint level, GLenum internalformat, GLenum format, GLenum type, ImageData? pixels);
            gl.texImage2D(gl.TEXTURE_2D, 0, format, gl.RGBA, gl.UNSIGNED_BYTE, uniform.value.baseTexture.source);
        }

        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, magFilter);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, minFilter);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, wrapS);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, wrapT);
    }

    gl.uniform1i(uniform.uniformLocation, this.textureCount);

    uniform._init = true;

    this.textureCount++;

};

/**
* Updates the shader uniform values.
*
* @method PIXI.PixiShader#syncUniforms
*/
PIXI.PixiShader.prototype.syncUniforms = function()
{
    this.textureCount = 1;
    var uniform;
    var gl = this.gl;

    //  This would probably be faster in an array and it would guarantee key order
    for (var key in this.uniforms)
    {

        uniform = this.uniforms[key];

        if (uniform.glValueLength === 1)
        {
            if (uniform.glMatrix === true)
            {
                uniform.glFunc.call(gl, uniform.uniformLocation, uniform.transpose, uniform.value);
            }
            else
            {
                uniform.glFunc.call(gl, uniform.uniformLocation, uniform.value);
            }
        }
        else if (uniform.glValueLength === 2)
        {
            uniform.glFunc.call(gl, uniform.uniformLocation, uniform.value.x, uniform.value.y);
        }
        else if (uniform.glValueLength === 3)
        {
            uniform.glFunc.call(gl, uniform.uniformLocation, uniform.value.x, uniform.value.y, uniform.value.z);
        }
        else if (uniform.glValueLength === 4)
        {
            uniform.glFunc.call(gl, uniform.uniformLocation, uniform.value.x, uniform.value.y, uniform.value.z, uniform.value.w);
        }
        else if (uniform.type === 'sampler2D')
        {
            if (uniform._init)
            {
                gl.activeTexture(gl['TEXTURE' + this.textureCount]);
                gl.bindTexture(gl.TEXTURE_2D, uniform.value.baseTexture._glTextures[gl.id] || PIXI.createWebGLTexture( uniform.value.baseTexture, gl));
                gl.uniform1i(uniform.uniformLocation, this.textureCount);
                this.textureCount++;
            }
            else
            {
                this.initSampler2D(uniform);
            }
        }
    }

};

PIXI.PixiShader.defaultVertexSrc = [
    'attribute vec2 aVertexPosition;',
    'attribute vec2 aTextureCoord;',
    'attribute vec2 aColor;',

    'uniform vec2 projectionVector;',
    'uniform vec2 offsetVector;',

    'varying vec2 vTextureCoord;',
    'varying vec4 vColor;',

    'const vec2 center = vec2(-1.0, 1.0);',

    'void main(void) {',
    '   gl_Position = vec4( ((aVertexPosition + offsetVector) / projectionVector) + center , 0.0, 1.0);',
    '   vTextureCoord = aTextureCoord;',
    '   vec3 color = mod(vec3(aColor.y/65536.0, aColor.y/256.0, aColor.y), 256.0) / 256.0;',
    '   vColor = vec4(color * aColor.x, aColor.x);',
    '}'
];



/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */


PIXI.StripShader = function()
{
    // the webGL program..
    this.program = null;

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying float vColor;',
        'uniform float alpha;',
        'uniform sampler2D uSampler;',

        'void main(void) {',
        '   gl_FragColor = texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y));',
        '   gl_FragColor = gl_FragColor * alpha;',
        '}'
    ];

    this.vertexSrc = [
        'attribute vec2 aVertexPosition;',
        'attribute vec2 aTextureCoord;',
        'attribute float aColor;',
        'uniform mat3 translationMatrix;',
        'uniform vec2 projectionVector;',
        'varying vec2 vTextureCoord;',
        'uniform vec2 offsetVector;',
        'varying float vColor;',

        'void main(void) {',
        '   vec3 v = translationMatrix * vec3(aVertexPosition, 1.0);',
        '   v -= offsetVector.xyx;',
        '   gl_Position = vec4( v.x / projectionVector.x -1.0, v.y / projectionVector.y + 1.0 , 0.0, 1.0);',
        '   vTextureCoord = aTextureCoord;',
        '   vColor = aColor;',
        '}'
    ];
};

PIXI.StripShader.prototype.init = function()
{

    var gl = PIXI.gl;

    var program = PIXI.compileProgram(gl, this.vertexSrc, this.fragmentSrc);
    gl.useProgram(program);

    // get and store the uniforms for the shader
    this.uSampler = gl.getUniformLocation(program, 'uSampler');
    this.projectionVector = gl.getUniformLocation(program, 'projectionVector');
    this.offsetVector = gl.getUniformLocation(program, 'offsetVector');
    this.colorAttribute = gl.getAttribLocation(program, 'aColor');
    //this.dimensions = gl.getUniformLocation(this.program, 'dimensions');

    // get and store the attributes
    this.aVertexPosition = gl.getAttribLocation(program, 'aVertexPosition');
    this.aTextureCoord = gl.getAttribLocation(program, 'aTextureCoord');

    this.translationMatrix = gl.getUniformLocation(program, 'translationMatrix');
    this.alpha = gl.getUniformLocation(program, 'alpha');

    this.program = program;
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */


PIXI.PrimitiveShader = function(gl)
{
    this.gl = gl;

    // the webGL program..
    this.program = null;

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec4 vColor;',

        'void main(void) {',
        '   gl_FragColor = vColor;',
        '}'
    ];

    this.vertexSrc  = [
        'attribute vec2 aVertexPosition;',
        'attribute vec4 aColor;',
        'uniform mat3 translationMatrix;',
        'uniform vec2 projectionVector;',
        'uniform vec2 offsetVector;',
        'uniform float alpha;',
        'uniform vec3 tint;',
        'varying vec4 vColor;',

        'void main(void) {',
        '   vec3 v = translationMatrix * vec3(aVertexPosition , 1.0);',
        '   v -= offsetVector.xyx;',
        '   gl_Position = vec4( v.x / projectionVector.x -1.0, v.y / -projectionVector.y + 1.0 , 0.0, 1.0);',
        '   vColor = aColor * vec4(tint * alpha, alpha);',
        '}'
    ];

    this.init();
};

PIXI.PrimitiveShader.prototype.init = function()
{

    var gl = this.gl;

    var program = PIXI.compileProgram(gl, this.vertexSrc, this.fragmentSrc);
    gl.useProgram(program);

    // get and store the uniforms for the shader
    this.projectionVector = gl.getUniformLocation(program, 'projectionVector');
    this.offsetVector = gl.getUniformLocation(program, 'offsetVector');
    this.tintColor = gl.getUniformLocation(program, 'tint');


    // get and store the attributes
    this.aVertexPosition = gl.getAttribLocation(program, 'aVertexPosition');
    this.colorAttribute = gl.getAttribLocation(program, 'aColor');

    this.translationMatrix = gl.getUniformLocation(program, 'translationMatrix');
    this.alpha = gl.getUniformLocation(program, 'alpha');

    this.program = program;
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * A set of functions used by the webGL renderer to draw the primitive graphics data
 *
 * @class CanvasGraphics
 */
PIXI.WebGLGraphics = function()
{

};

/**
 * Renders the graphics object
 *
 * @static
 * @private
 * @method renderGraphics
 * @param graphics {Graphics}
 * @param projection {Object}
 */
PIXI.WebGLGraphics.renderGraphics = function(graphics, renderSession)//projection, offset)
{
    var gl = renderSession.gl;
    var projection = renderSession.projection,
        offset = renderSession.offset,
        shader = renderSession.shaderManager.primitiveShader;

    if(!graphics._webGL[gl.id])graphics._webGL[gl.id] = {points:[], indices:[], lastIndex:0,
                                           buffer:gl.createBuffer(),
                                           indexBuffer:gl.createBuffer()};

    var webGL = graphics._webGL[gl.id];

    if(graphics.dirty)
    {
        graphics.dirty = false;

        if(graphics.clearDirty)
        {
            graphics.clearDirty = false;

            webGL.lastIndex = 0;
            webGL.points = [];
            webGL.indices = [];

        }

        PIXI.WebGLGraphics.updateGraphics(graphics, gl);
    }

    renderSession.shaderManager.activatePrimitiveShader();

    // This  could be speeded up fo sure!
    var m = PIXI.mat3.clone(graphics.worldTransform);

    PIXI.mat3.transpose(m);

    // set the matrix transform for the
    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);

    gl.uniformMatrix3fv(shader.translationMatrix, false, m);

    gl.uniform2f(shader.projectionVector, projection.x, -projection.y);
    gl.uniform2f(shader.offsetVector, -offset.x, -offset.y);

    gl.uniform3fv(shader.tintColor, PIXI.hex2rgb(graphics.tint));

    gl.uniform1f(shader.alpha, graphics.worldAlpha);
    gl.bindBuffer(gl.ARRAY_BUFFER, webGL.buffer);

    gl.vertexAttribPointer(shader.aVertexPosition, 2, gl.FLOAT, false, 4 * 6, 0);
    gl.vertexAttribPointer(shader.colorAttribute, 4, gl.FLOAT, false,4 * 6, 2 * 4);

    // set the index buffer!
    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, webGL.indexBuffer);

    gl.drawElements(gl.TRIANGLE_STRIP,  webGL.indices.length, gl.UNSIGNED_SHORT, 0 );

    renderSession.shaderManager.deactivatePrimitiveShader();

    // return to default shader...
//  PIXI.activateShader(PIXI.defaultShader);
};

/**
 * Updates the graphics object
 *
 * @static
 * @private
 * @method updateGraphics
 * @param graphics {Graphics}
 */
PIXI.WebGLGraphics.updateGraphics = function(graphics, gl)
{
    var webGL = graphics._webGL[gl.id];

    for (var i = webGL.lastIndex; i < graphics.graphicsData.length; i++)
    {
        var data = graphics.graphicsData[i];

        if(data.type === PIXI.Graphics.POLY)
        {
            if(data.fill)
            {
                if(data.points.length>3)
                    PIXI.WebGLGraphics.buildPoly(data, webGL);
            }

            if(data.lineWidth > 0)
            {
                PIXI.WebGLGraphics.buildLine(data, webGL);
            }
        }
        else if(data.type === PIXI.Graphics.RECT)
        {
            PIXI.WebGLGraphics.buildRectangle(data, webGL);
        }
        else if(data.type === PIXI.Graphics.CIRC || data.type === PIXI.Graphics.ELIP)
        {
            PIXI.WebGLGraphics.buildCircle(data, webGL);
        }
    }

    webGL.lastIndex = graphics.graphicsData.length;



    webGL.glPoints = new Float32Array(webGL.points);

    gl.bindBuffer(gl.ARRAY_BUFFER, webGL.buffer);
    gl.bufferData(gl.ARRAY_BUFFER, webGL.glPoints, gl.STATIC_DRAW);

    webGL.glIndicies = new Uint16Array(webGL.indices);

    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, webGL.indexBuffer);
    gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, webGL.glIndicies, gl.STATIC_DRAW);
};

/**
 * Builds a rectangle to draw
 *
 * @static
 * @private
 * @method buildRectangle
 * @param graphics {Graphics}
 * @param webGLData {Object}
 */
PIXI.WebGLGraphics.buildRectangle = function(graphicsData, webGLData)
{
    // --- //
    // need to convert points to a nice regular data
    //
    var rectData = graphicsData.points;
    var x = rectData[0];
    var y = rectData[1];
    var width = rectData[2];
    var height = rectData[3];


    if(graphicsData.fill)
    {
        var color = PIXI.hex2rgb(graphicsData.fillColor);
        var alpha = graphicsData.fillAlpha;

        var r = color[0] * alpha;
        var g = color[1] * alpha;
        var b = color[2] * alpha;

        var verts = webGLData.points;
        var indices = webGLData.indices;

        var vertPos = verts.length/6;

        // start
        verts.push(x, y);
        verts.push(r, g, b, alpha);

        verts.push(x + width, y);
        verts.push(r, g, b, alpha);

        verts.push(x , y + height);
        verts.push(r, g, b, alpha);

        verts.push(x + width, y + height);
        verts.push(r, g, b, alpha);

        // insert 2 dead triangles..
        indices.push(vertPos, vertPos, vertPos+1, vertPos+2, vertPos+3, vertPos+3);
    }

    if(graphicsData.lineWidth)
    {
        var tempPoints = graphicsData.points;

        graphicsData.points = [x, y,
                  x + width, y,
                  x + width, y + height,
                  x, y + height,
                  x, y];


        PIXI.WebGLGraphics.buildLine(graphicsData, webGLData);

        graphicsData.points = tempPoints;
    }
};

/**
 * Builds a circle to draw
 *
 * @static
 * @private
 * @method buildCircle
 * @param graphics {Graphics}
 * @param webGLData {Object}
 */
PIXI.WebGLGraphics.buildCircle = function(graphicsData, webGLData)
{
    // --- //
    // need to convert points to a nice regular data
    //
    var rectData = graphicsData.points;
    var x = rectData[0];
    var y = rectData[1];
    var width = rectData[2];
    var height = rectData[3];

    var totalSegs = 40;
    var seg = (Math.PI * 2) / totalSegs ;

    var i = 0;

    if(graphicsData.fill)
    {
        var color = PIXI.hex2rgb(graphicsData.fillColor);
        var alpha = graphicsData.fillAlpha;

        var r = color[0] * alpha;
        var g = color[1] * alpha;
        var b = color[2] * alpha;

        var verts = webGLData.points;
        var indices = webGLData.indices;

        var vecPos = verts.length/6;

        indices.push(vecPos);

        for (i = 0; i < totalSegs + 1 ; i++)
        {
            verts.push(x,y, r, g, b, alpha);

            verts.push(x + Math.sin(seg * i) * width,
                       y + Math.cos(seg * i) * height,
                       r, g, b, alpha);

            indices.push(vecPos++, vecPos++);
        }

        indices.push(vecPos-1);
    }

    if(graphicsData.lineWidth)
    {
        var tempPoints = graphicsData.points;

        graphicsData.points = [];

        for (i = 0; i < totalSegs + 1; i++)
        {
            graphicsData.points.push(x + Math.sin(seg * i) * width,
                                     y + Math.cos(seg * i) * height);
        }

        PIXI.WebGLGraphics.buildLine(graphicsData, webGLData);

        graphicsData.points = tempPoints;
    }
};

/**
 * Builds a line to draw
 *
 * @static
 * @private
 * @method buildLine
 * @param graphics {Graphics}
 * @param webGLData {Object}
 */
PIXI.WebGLGraphics.buildLine = function(graphicsData, webGLData)
{
    // TODO OPTIMISE!
    var i = 0;

    var points = graphicsData.points;
    if(points.length === 0)return;

    /*
    // if the line width is an odd number add 0.5 to align to a whole pixel
    if(graphicsData.lineWidth%2)
    {
        for (i = 0; i < points.length; i++) {
            points[i] += 0.5;
        }
    }
    */

    // get first and last point.. figure out the middle!
    var firstPoint = new PIXI.Point( points[0], points[1] );
    var lastPoint = new PIXI.Point( points[points.length - 2], points[points.length - 1] );

    // if the first point is the last point - goona have issues :)
    if(firstPoint.x === lastPoint.x && firstPoint.y === lastPoint.y)
    {
        points.pop();
        points.pop();

        lastPoint = new PIXI.Point( points[points.length - 2], points[points.length - 1] );

        var midPointX = lastPoint.x + (firstPoint.x - lastPoint.x) *0.5;
        var midPointY = lastPoint.y + (firstPoint.y - lastPoint.y) *0.5;

        points.unshift(midPointX, midPointY);
        points.push(midPointX, midPointY);
    }

    var verts = webGLData.points;
    var indices = webGLData.indices;
    var length = points.length / 2;
    var indexCount = points.length;
    var indexStart = verts.length/6;

    // DRAW the Line
    var width = graphicsData.lineWidth / 2;

    // sort color
    var color = PIXI.hex2rgb(graphicsData.lineColor);
    var alpha = graphicsData.lineAlpha;
    var r = color[0] * alpha;
    var g = color[1] * alpha;
    var b = color[2] * alpha;

    var px, py, p1x, p1y, p2x, p2y, p3x, p3y;
    var perpx, perpy, perp2x, perp2y, perp3x, perp3y;
    var a1, b1, c1, a2, b2, c2;
    var denom, pdist, dist;

    p1x = points[0];
    p1y = points[1];

    p2x = points[2];
    p2y = points[3];

    perpx = -(p1y - p2y);
    perpy =  p1x - p2x;

    dist = Math.sqrt(perpx*perpx + perpy*perpy);

    perpx /= dist;
    perpy /= dist;
    perpx *= width;
    perpy *= width;

    // start
    verts.push(p1x - perpx , p1y - perpy,
                r, g, b, alpha);

    verts.push(p1x + perpx , p1y + perpy,
                r, g, b, alpha);

    for (i = 1; i < length-1; i++)
    {
        p1x = points[(i-1)*2];
        p1y = points[(i-1)*2 + 1];

        p2x = points[(i)*2];
        p2y = points[(i)*2 + 1];

        p3x = points[(i+1)*2];
        p3y = points[(i+1)*2 + 1];

        perpx = -(p1y - p2y);
        perpy = p1x - p2x;

        dist = Math.sqrt(perpx*perpx + perpy*perpy);
        perpx /= dist;
        perpy /= dist;
        perpx *= width;
        perpy *= width;

        perp2x = -(p2y - p3y);
        perp2y = p2x - p3x;

        dist = Math.sqrt(perp2x*perp2x + perp2y*perp2y);
        perp2x /= dist;
        perp2y /= dist;
        perp2x *= width;
        perp2y *= width;

        a1 = (-perpy + p1y) - (-perpy + p2y);
        b1 = (-perpx + p2x) - (-perpx + p1x);
        c1 = (-perpx + p1x) * (-perpy + p2y) - (-perpx + p2x) * (-perpy + p1y);
        a2 = (-perp2y + p3y) - (-perp2y + p2y);
        b2 = (-perp2x + p2x) - (-perp2x + p3x);
        c2 = (-perp2x + p3x) * (-perp2y + p2y) - (-perp2x + p2x) * (-perp2y + p3y);

        denom = a1*b2 - a2*b1;

        /*
        if(Math.abs(denom) < 0.1 )
        {

            denom+=10.1;
            verts.push(p2x - perpx , p2y - perpy,
                r, g, b, alpha);

            verts.push(p2x + perpx , p2y + perpy,
                r, g, b, alpha);

            continue;
        }
        */

        px = (b1*c2 - b2*c1)/denom;
        py = (a2*c1 - a1*c2)/denom;


        pdist = (px -p2x) * (px -p2x) + (py -p2y) + (py -p2y);


        if(pdist > 140 * 140)
        {
            perp3x = perpx - perp2x;
            perp3y = perpy - perp2y;

            dist = Math.sqrt(perp3x*perp3x + perp3y*perp3y);
            perp3x /= dist;
            perp3y /= dist;
            perp3x *= width;
            perp3y *= width;

            verts.push(p2x - perp3x, p2y -perp3y);
            verts.push(r, g, b, alpha);

            verts.push(p2x + perp3x, p2y +perp3y);
            verts.push(r, g, b, alpha);

            verts.push(p2x - perp3x, p2y -perp3y);
            verts.push(r, g, b, alpha);

            indexCount++;
        }
        else
        {

            verts.push(px , py);
            verts.push(r, g, b, alpha);

            verts.push(p2x - (px-p2x), p2y - (py - p2y));
            verts.push(r, g, b, alpha);
        }
    }

    p1x = points[(length-2)*2];
    p1y = points[(length-2)*2 + 1];

    p2x = points[(length-1)*2];
    p2y = points[(length-1)*2 + 1];

    perpx = -(p1y - p2y);
    perpy = p1x - p2x;

    dist = Math.sqrt(perpx*perpx + perpy*perpy);
    perpx /= dist;
    perpy /= dist;
    perpx *= width;
    perpy *= width;

    verts.push(p2x - perpx , p2y - perpy);
    verts.push(r, g, b, alpha);

    verts.push(p2x + perpx , p2y + perpy);
    verts.push(r, g, b, alpha);

    indices.push(indexStart);

    for (i = 0; i < indexCount; i++)
    {
        indices.push(indexStart++);
    }

    indices.push(indexStart-1);
};

/**
 * Builds a polygon to draw
 *
 * @static
 * @private
 * @method buildPoly
 * @param graphics {Graphics}
 * @param webGLData {Object}
 */
PIXI.WebGLGraphics.buildPoly = function(graphicsData, webGLData)
{
    var points = graphicsData.points;
    if(points.length < 6)return;

    // get first and last point.. figure out the middle!
    var verts = webGLData.points;
    var indices = webGLData.indices;

    var length = points.length / 2;

    // sort color
    var color = PIXI.hex2rgb(graphicsData.fillColor);
    var alpha = graphicsData.fillAlpha;
    var r = color[0] * alpha;
    var g = color[1] * alpha;
    var b = color[2] * alpha;

    var triangles = PIXI.PolyK.Triangulate(points);

    var vertPos = verts.length / 6;

    var i = 0;

    for (i = 0; i < triangles.length; i+=3)
    {
        indices.push(triangles[i] + vertPos);
        indices.push(triangles[i] + vertPos);
        indices.push(triangles[i+1] + vertPos);
        indices.push(triangles[i+2] +vertPos);
        indices.push(triangles[i+2] + vertPos);
    }

    for (i = 0; i < length; i++)
    {
        verts.push(points[i * 2], points[i * 2 + 1],
                   r, g, b, alpha);
    }
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

PIXI.glContexts = []; // this is where we store the webGL contexts for easy access.

/**
 * the WebGLRenderer is draws the stage and all its content onto a webGL enabled canvas. This renderer
 * should be used for browsers support webGL. This Render works by automatically managing webGLBatchs.
 * So no need for Sprite Batch's or Sprite Cloud's
 * Dont forget to add the view to your DOM or you will not see anything :)
 *
 * @class WebGLRenderer
 * @constructor
 * @param width=0 {Number} the width of the canvas view
 * @param height=0 {Number} the height of the canvas view
 * @param view {Canvas} the canvas to use as a view, optional
 * @param transparent=false {Boolean} the transparency of the render view, default false
 * @param antialias=false {Boolean} sets antialias (only applicable in chrome at the moment)
 *
 */
PIXI.WebGLRenderer = function(width, height, view, transparent, antialias)
{
    if(!PIXI.defaultRenderer)PIXI.defaultRenderer = this;

    this.type = PIXI.WEBGL_RENDERER;

    // do a catch.. only 1 webGL renderer..
    this.transparent = !!transparent;

    this.width = width || 800;
    this.height = height || 600;

    this.view = view || document.createElement( 'canvas' );
    this.view.width = this.width;
    this.view.height = this.height;

    // deal with losing context..
    var scope = this;
    this.view.addEventListener('webglcontextlost', function(event) { scope.handleContextLost(event); }, false);
    this.view.addEventListener('webglcontextrestored', function(event) { scope.handleContextRestored(event); }, false);

    this.options = {
        alpha: this.transparent,
        antialias:!!antialias, // SPEED UP??
        premultipliedAlpha:false,
        stencil:true
    };

    //try 'experimental-webgl'
    try {
        this.gl = this.view.getContext('experimental-webgl',  this.options);
    } catch (e) {
        //try 'webgl'
        try {
            this.gl = this.view.getContext('webgl',  this.options);
        } catch (e2) {
            // fail, not able to get a context
            throw new Error(' This browser does not support webGL. Try using the canvas renderer' + this);
        }
    }

    var gl = this.gl;
    this.glContextId = gl.id = PIXI.WebGLRenderer.glContextId ++;

    PIXI.glContexts[this.glContextId] = gl;

    if(!PIXI.blendModesWebGL)
    {
        PIXI.blendModesWebGL = [];

        PIXI.blendModesWebGL[PIXI.blendModes.NORMAL]   = [gl.ONE,       gl.ONE_MINUS_SRC_ALPHA];
        PIXI.blendModesWebGL[PIXI.blendModes.ADD]      = [gl.SRC_ALPHA, gl.DST_ALPHA];
        PIXI.blendModesWebGL[PIXI.blendModes.MULTIPLY] = [gl.DST_COLOR, gl.ONE_MINUS_SRC_ALPHA];
        PIXI.blendModesWebGL[PIXI.blendModes.SCREEN]   = [gl.SRC_ALPHA, gl.ONE];
    }




    this.projection = new PIXI.Point();
    this.projection.x =  this.width/2;
    this.projection.y =  -this.height/2;

    this.offset = new PIXI.Point(0, 0);

    this.resize(this.width, this.height);
    this.contextLost = false;

    // time to create the render managers! each one focuses on managine a state in webGL
    this.shaderManager = new PIXI.WebGLShaderManager(gl);                   // deals with managing the shader programs and their attribs
    this.spriteBatch = new PIXI.WebGLSpriteBatch(gl);                       // manages the rendering of sprites
    this.maskManager = new PIXI.WebGLMaskManager(gl);                       // manages the masks using the stencil buffer
    this.filterManager = new PIXI.WebGLFilterManager(gl, this.transparent); // manages the filters

    //
    this.renderSession = {};
    this.renderSession.gl = this.gl;
    this.renderSession.drawCount = 0;
    this.renderSession.shaderManager = this.shaderManager;
    this.renderSession.maskManager = this.maskManager;
    this.renderSession.filterManager = this.filterManager;
    this.renderSession.spriteBatch = this.spriteBatch;


    gl.useProgram(this.shaderManager.defaultShader.program);

    gl.disable(gl.DEPTH_TEST);
    gl.disable(gl.CULL_FACE);

    gl.enable(gl.BLEND);
    gl.colorMask(true, true, true, this.transparent);
};

// constructor
PIXI.WebGLRenderer.prototype.constructor = PIXI.WebGLRenderer;

/**
 * Renders the stage to its webGL view
 *
 * @method render
 * @param stage {Stage} the Stage element to be rendered
 */
PIXI.WebGLRenderer.prototype.render = function(stage)
{
    if(this.contextLost)return;


    // if rendering a new stage clear the batchs..
    if(this.__stage !== stage)
    {
        // TODO make this work
        // dont think this is needed any more?
        this.__stage = stage;
    }

    // update any textures this includes uvs and uploading them to the gpu
    PIXI.WebGLRenderer.updateTextures();

    // update the scene graph
    stage.updateTransform();

    var gl = this.gl;

    // -- Does this need to be set every frame? -- //
    gl.colorMask(true, true, true, this.transparent);
    gl.viewport(0, 0, this.width, this.height);

    // make sure we are bound to the main frame buffer
    gl.bindFramebuffer(gl.FRAMEBUFFER, null);

    gl.clearColor(stage.backgroundColorSplit[0],stage.backgroundColorSplit[1],stage.backgroundColorSplit[2], !this.transparent);
    gl.clear(gl.COLOR_BUFFER_BIT);

  //  this.projection.x =  this.width/2;
    //this.projection.y =  -this.height/2;

    this.renderDisplayObject( stage, this.projection );

    // interaction
    if(stage.interactive)
    {
        //need to add some events!
        if(!stage._interactiveEventsAdded)
        {
            stage._interactiveEventsAdded = true;
            stage.interactionManager.setTarget(this);
        }
    }

    /*
    //can simulate context loss in Chrome like so:
     this.view.onmousedown = function(ev) {
     console.dir(this.gl.getSupportedExtensions());
        var ext = (
            gl.getExtension("WEBGL_scompressed_texture_s3tc")
       // gl.getExtension("WEBGL_compressed_texture_s3tc") ||
       // gl.getExtension("MOZ_WEBGL_compressed_texture_s3tc") ||
       // gl.getExtension("WEBKIT_WEBGL_compressed_texture_s3tc")
     );
     console.dir(ext);
     var loseCtx = this.gl.getExtension("WEBGL_lose_context");
      console.log("killing context");
      loseCtx.loseContext();
     setTimeout(function() {
          console.log("restoring context...");
          loseCtx.restoreContext();
      }.bind(this), 1000);
     }.bind(this);
     */
};

PIXI.WebGLRenderer.prototype.renderDisplayObject = function(displayObject, projection)
{
    // reset the render session data..
    this.renderSession.drawCount = 0;
    this.renderSession.currentBlendMode = 9999;

    this.renderSession.projection = projection;
    this.renderSession.offset = this.offset;

    // start the sprite batch
    this.spriteBatch.begin(this.renderSession);

    // start the filter manager
    this.filterManager.begin(this.renderSession, null);

    // render the scene!
    displayObject._renderWebGL(this.renderSession);

    // finish the sprite batch
    this.spriteBatch.end();
};

/**
 * Updates the textures loaded into this webgl renderer
 *
 * @static
 * @method updateTextures
 * @private
 */
PIXI.WebGLRenderer.updateTextures = function()
{
    var i = 0;

    //TODO break this out into a texture manager...
    //for (i = 0; i < PIXI.texturesToUpdate.length; i++)
    //    PIXI.WebGLRenderer.updateTexture(PIXI.texturesToUpdate[i]);


    for (i=0; i < PIXI.Texture.frameUpdates.length; i++)
        PIXI.WebGLRenderer.updateTextureFrame(PIXI.Texture.frameUpdates[i]);

    for (i = 0; i < PIXI.texturesToDestroy.length; i++)
        PIXI.WebGLRenderer.destroyTexture(PIXI.texturesToDestroy[i]);

    PIXI.texturesToUpdate.length = 0;
    PIXI.texturesToDestroy.length = 0;
    PIXI.Texture.frameUpdates.length = 0;
};

/**
 * Destroys a loaded webgl texture
 *
 * @method destroyTexture
 * @param texture {Texture} The texture to update
 * @private
 */
PIXI.WebGLRenderer.destroyTexture = function(texture)
{
    //TODO break this out into a texture manager...

    for (var i = texture._glTextures.length - 1; i >= 0; i--)
    {
        var glTexture = texture._glTextures[i];
        var gl = PIXI.glContexts[i];

        if(gl && glTexture)
        {
            gl.deleteTexture(glTexture);
        }
    }

    texture._glTextures.length = 0;
};

PIXI.WebGLRenderer.updateTextureFrame = function(texture)
{
    texture.updateFrame = false;

    // now set the uvs. Figured that the uv data sits with a texture rather than a sprite.
    // so uv data is stored on the texture itself
    texture._updateWebGLuvs();
};

/**
 * resizes the webGL view to the specified width and height
 *
 * @method resize
 * @param width {Number} the new width of the webGL view
 * @param height {Number} the new height of the webGL view
 */
PIXI.WebGLRenderer.prototype.resize = function(width, height)
{
    this.width = width;
    this.height = height;

    this.view.width = width;
    this.view.height = height;

    this.gl.viewport(0, 0, this.width, this.height);

    this.projection.x =  this.width/2;
    this.projection.y =  -this.height/2;
};

PIXI.createWebGLTexture = function(texture, gl)
{


    if(texture.hasLoaded)
    {
        texture._glTextures[gl.id] = gl.createTexture();

        gl.bindTexture(gl.TEXTURE_2D, texture._glTextures[gl.id]);
        gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);

        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, texture.source);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, texture.scaleMode === PIXI.BaseTexture.SCALE_MODE.LINEAR ? gl.LINEAR : gl.NEAREST);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, texture.scaleMode === PIXI.BaseTexture.SCALE_MODE.LINEAR ? gl.LINEAR : gl.NEAREST);

        // reguler...

        if(!texture._powerOf2)
        {
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
        }
        else
        {
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
        }

        gl.bindTexture(gl.TEXTURE_2D, null);
    }

    return  texture._glTextures[gl.id];
};

PIXI.updateWebGLTexture = function(texture, gl)
{
    if( texture._glTextures[gl.id] )
    {
        gl.bindTexture(gl.TEXTURE_2D, texture._glTextures[gl.id]);
        gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);

        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, texture.source);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, texture.scaleMode === PIXI.BaseTexture.SCALE_MODE.LINEAR ? gl.LINEAR : gl.NEAREST);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, texture.scaleMode === PIXI.BaseTexture.SCALE_MODE.LINEAR ? gl.LINEAR : gl.NEAREST);

        // reguler...

        if(!texture._powerOf2)
        {
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
        }
        else
        {
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
        }

        gl.bindTexture(gl.TEXTURE_2D, null);
    }

};

/**
 * Handles a lost webgl context
 *
 * @method handleContextLost
 * @param event {Event}
 * @private
 */
PIXI.WebGLRenderer.prototype.handleContextLost = function(event)
{
    event.preventDefault();
    this.contextLost = true;
};

/**
 * Handles a restored webgl context
 *
 * @method handleContextRestored
 * @param event {Event}
 * @private
 */
PIXI.WebGLRenderer.prototype.handleContextRestored = function()
{

    //try 'experimental-webgl'
    try {
        this.gl = this.view.getContext('experimental-webgl',  this.options);
    } catch (e) {
        //try 'webgl'
        try {
            this.gl = this.view.getContext('webgl',  this.options);
        } catch (e2) {
            // fail, not able to get a context
            throw new Error(' This browser does not support webGL. Try using the canvas renderer' + this);
        }
    }

    var gl = this.gl;
    gl.id = PIXI.WebGLRenderer.glContextId ++;



    // need to set the context...
    this.shaderManager.setContext(gl);
    this.spriteBatch.setContext(gl);
    this.maskManager.setContext(gl);
    this.filterManager.setContext(gl);


    this.renderSession.gl = this.gl;

    gl.disable(gl.DEPTH_TEST);
    gl.disable(gl.CULL_FACE);

    gl.enable(gl.BLEND);
    gl.colorMask(true, true, true, this.transparent);

    this.gl.viewport(0, 0, this.width, this.height);

    for(var key in PIXI.TextureCache)
    {
        var texture = PIXI.TextureCache[key].baseTexture;
        texture._glTextures = [];
    }

    this.contextLost = false;

};

PIXI.WebGLRenderer.glContextId = 0;

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

PIXI.WebGLMaskManager = function(gl)
{
    this.maskStack = [];
    this.maskPosition = 0;

    this.setContext(gl);
};

PIXI.WebGLMaskManager.prototype.setContext = function(gl)
{
    this.gl = gl;
};

PIXI.WebGLMaskManager.prototype.pushMask = function(maskData, renderSession)
{
    var gl = this.gl;

    if(this.maskStack.length === 0)
    {
        gl.enable(gl.STENCIL_TEST);
        gl.stencilFunc(gl.ALWAYS,1,1);
    }

  //  maskData.visible = false;

    this.maskStack.push(maskData);

    gl.colorMask(false, false, false, true);
    gl.stencilOp(gl.KEEP,gl.KEEP,gl.INCR);

    PIXI.WebGLGraphics.renderGraphics(maskData, renderSession);

    gl.colorMask(true, true, true, true);
    gl.stencilFunc(gl.NOTEQUAL,0, this.maskStack.length);
    gl.stencilOp(gl.KEEP,gl.KEEP,gl.KEEP);
};

PIXI.WebGLMaskManager.prototype.popMask = function(renderSession)
{
    var gl = this.gl;

    var maskData = this.maskStack.pop();

    if(maskData)
    {
        gl.colorMask(false, false, false, false);

        //gl.stencilFunc(gl.ALWAYS,1,1);
        gl.stencilOp(gl.KEEP,gl.KEEP,gl.DECR);

        PIXI.WebGLGraphics.renderGraphics(maskData, renderSession);

        gl.colorMask(true, true, true, true);
        gl.stencilFunc(gl.NOTEQUAL,0,this.maskStack.length);
        gl.stencilOp(gl.KEEP,gl.KEEP,gl.KEEP);
    }

    if(this.maskStack.length === 0)gl.disable(gl.STENCIL_TEST);
};
/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

PIXI.WebGLShaderManager = function(gl)
{
    this.setContext(gl);

    // the final one is used for the rendering strips
    //this.stripShader = new PIXI.StripShader(gl);
};

PIXI.WebGLShaderManager.prototype.setContext = function(gl)
{
    this.gl = gl;

    // the next one is used for rendering primatives
    this.primitiveShader = new PIXI.PrimitiveShader(gl);

    // this shader is used for the default sprite rendering
    this.defaultShader = new PIXI.PixiShader(gl);

    var shaderProgram = this.defaultShader.program;

    gl.useProgram(shaderProgram);

    gl.enableVertexAttribArray(this.defaultShader.aVertexPosition);
    gl.enableVertexAttribArray(this.defaultShader.colorAttribute);
    gl.enableVertexAttribArray(this.defaultShader.aTextureCoord);


};

PIXI.WebGLShaderManager.prototype.activatePrimitiveShader = function()
{
    var gl = this.gl;

    gl.useProgram(this.primitiveShader.program);

    gl.disableVertexAttribArray(this.defaultShader.aVertexPosition);
    gl.disableVertexAttribArray(this.defaultShader.colorAttribute);
    gl.disableVertexAttribArray(this.defaultShader.aTextureCoord);

    gl.enableVertexAttribArray(this.primitiveShader.aVertexPosition);
    gl.enableVertexAttribArray(this.primitiveShader.colorAttribute);
};

PIXI.WebGLShaderManager.prototype.deactivatePrimitiveShader = function()
{
    var gl = this.gl;

    gl.useProgram(this.defaultShader.program);

    gl.disableVertexAttribArray(this.primitiveShader.aVertexPosition);
    gl.disableVertexAttribArray(this.primitiveShader.colorAttribute);

    gl.enableVertexAttribArray(this.defaultShader.aVertexPosition);
    gl.enableVertexAttribArray(this.defaultShader.colorAttribute);
    gl.enableVertexAttribArray(this.defaultShader.aTextureCoord);
};
/**
 * @author Mat Groves
 *
 * Big thanks to the very clever Matt DesLauriers <mattdesl> https://github.com/mattdesl/
 * for creating the original pixi version!
 *
 * Heavily inspired by LibGDX's WebGLSpriteBatch:
 * https://github.com/libgdx/libgdx/blob/master/gdx/src/com/badlogic/gdx/graphics/g2d/WebGLSpriteBatch.java
 */

PIXI.WebGLSpriteBatch = function(gl)
{


    this.size = 2000;
    this.vertSize = 6;

    //the total number of floats in our batch
    var numVerts = this.size * 4 *  this.vertSize;
    //the total number of indices in our batch
    var numIndices = this.size * 6;

     //vertex data
    this.vertices = new Float32Array(numVerts);
    //index data
    this.indices = new Uint16Array(numIndices);

    this.lastIndexCount = 0;

    for (var i=0, j=0; i < numIndices; i += 6, j += 4)
    {
        this.indices[i + 0] = j + 0;
        this.indices[i + 1] = j + 1;
        this.indices[i + 2] = j + 2;
        this.indices[i + 3] = j + 0;
        this.indices[i + 4] = j + 2;
        this.indices[i + 5] = j + 3;
    }


    this.drawing = false;
    this.currentBatchSize = 0;
    this.currentBaseTexture = null;

    this.setContext(gl);
};

PIXI.WebGLSpriteBatch.prototype.setContext = function(gl)
{
    this.gl = gl;

    // create a couple of buffers
    this.vertexBuffer = gl.createBuffer();
    this.indexBuffer = gl.createBuffer();

    // 65535 is max index, so 65535 / 6 = 10922.


    //upload the index data
    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indexBuffer);
    gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, this.indices, gl.STATIC_DRAW);

    gl.bindBuffer(gl.ARRAY_BUFFER, this.vertexBuffer);
    gl.bufferData(gl.ARRAY_BUFFER, this.vertices, gl.DYNAMIC_DRAW);

    this.currentBlendMode = 99999;
};

PIXI.WebGLSpriteBatch.prototype.begin = function(renderSession)
{
    this.renderSession = renderSession;
    this.shader = this.renderSession.shaderManager.defaultShader;

    this.start();
};

PIXI.WebGLSpriteBatch.prototype.end = function()
{
    this.flush();
};


PIXI.WebGLSpriteBatch.prototype.render = function(sprite)
{
    // check texture..
    if(sprite.texture.baseTexture !== this.currentBaseTexture || this.currentBatchSize >= this.size)
    {
        this.flush();
        this.currentBaseTexture = sprite.texture.baseTexture;
    }


    // check blend mode
    if(sprite.blendMode !== this.currentBlendMode)
    {
        this.setBlendMode(sprite.blendMode);
    }

    // get the uvs for the texture
    var uvs = sprite._uvs || sprite.texture._uvs;
    // if the uvs have not updated then no point rendering just yet!
    if(!uvs)return;

    // get the sprites current alpha
    var alpha = sprite.worldAlpha;
    var tint = sprite.tint;

    var  verticies = this.vertices;

    var width = sprite.texture.frame.width;
    var height = sprite.texture.frame.height;

    // TODO trim??
    var aX = sprite.anchor.x;
    var aY = sprite.anchor.y;

    var w0, w1, h0, h1;

    if (sprite.texture.trimmed)
    {
        // if the sprite is trimmed then we need to add the extra space before transforming the sprite coords..
        var trim = sprite.texture.trim;

        w1 = trim.x - aX * trim.realWidth;
        w0 = w1 + width;

        h1 = trim.y - aY * trim.realHeight;
        h0 = h1 + height;
    }
    else
    {
        w0 = (width ) * (1-aX);
        w1 = (width ) * -aX;

        h0 = height * (1-aY);
        h1 = height * -aY;
    }

    var index = this.currentBatchSize * 4 * this.vertSize;

    var worldTransform = sprite.worldTransform;

    var a = worldTransform[0];
    var b = worldTransform[3];
    var c = worldTransform[1];
    var d = worldTransform[4];
    var tx = worldTransform[2];
    var ty = worldTransform[5];

    // xy
    verticies[index++] = a * w1 + c * h1 + tx;
    verticies[index++] = d * h1 + b * w1 + ty;
    // uv
    verticies[index++] = uvs[0];
    verticies[index++] = uvs[1];
    // color
    verticies[index++] = alpha;
    verticies[index++] = tint;

    // xy
    verticies[index++] = a * w0 + c * h1 + tx;
    verticies[index++] = d * h1 + b * w0 + ty;
    // uv
    verticies[index++] = uvs[2];
    verticies[index++] = uvs[3];
    // color
    verticies[index++] = alpha;
    verticies[index++] = tint;

    // xy
    verticies[index++] = a * w0 + c * h0 + tx;
    verticies[index++] = d * h0 + b * w0 + ty;
    // uv
    verticies[index++] = uvs[4];
    verticies[index++] = uvs[5];
    // color
    verticies[index++] = alpha;
    verticies[index++] = tint;

    // xy
    verticies[index++] = a * w1 + c * h0 + tx;
    verticies[index++] = d * h0 + b * w1 + ty;
    // uv
    verticies[index++] = uvs[6];
    verticies[index++] = uvs[7];
    // color
    verticies[index++] = alpha;
    verticies[index++] = tint;

    // increment the batchs
    this.currentBatchSize++;


};

PIXI.WebGLSpriteBatch.prototype.renderTilingSprite = function(tilingSprite)
{
    var texture = tilingSprite.tilingTexture;

    if(texture.baseTexture !== this.currentBaseTexture || this.currentBatchSize >= this.size)
    {
        this.flush();
        this.currentBaseTexture = texture.baseTexture;
    }

     // check blend mode
    if(tilingSprite.blendMode !== this.currentBlendMode)
    {
        this.setBlendMode(tilingSprite.blendMode);
    }

     // set the textures uvs temporarily
    // TODO create a seperate texture so that we can tile part of a texture

    if(!tilingSprite._uvs)tilingSprite._uvs = new Float32Array(8);

    var uvs = tilingSprite._uvs;

    var offsetX =  tilingSprite.tilePosition.x/texture.baseTexture.width;
    var offsetY =  tilingSprite.tilePosition.y/texture.baseTexture.height;

    var scaleX =  (tilingSprite.width / texture.baseTexture.width)  / (tilingSprite.tileScale.x * tilingSprite.tileScaleOffset.x);
    var scaleY =  (tilingSprite.height / texture.baseTexture.height) / (tilingSprite.tileScale.y * tilingSprite.tileScaleOffset.y);

    uvs[0] = 0 - offsetX;
    uvs[1] = 0 - offsetY;

    uvs[2] = (1 * scaleX) - offsetX;
    uvs[3] = 0 - offsetY;

    uvs[4] = (1 * scaleX) - offsetX;
    uvs[5] = (1 * scaleY) - offsetY;

    uvs[6] = 0 - offsetX;
    uvs[7] = (1 *scaleY) - offsetY;


    // get the tilingSprites current alpha
    var alpha = tilingSprite.worldAlpha;
    var tint = tilingSprite.tint;

    var  verticies = this.vertices;

    var width = tilingSprite.width;
    var height = tilingSprite.height;

    // TODO trim??
    var aX = tilingSprite.anchor.x; // - tilingSprite.texture.trim.x
    var aY = tilingSprite.anchor.y; //- tilingSprite.texture.trim.y
    var w0 = width * (1-aX);
    var w1 = width * -aX;

    var h0 = height * (1-aY);
    var h1 = height * -aY;

    var index = this.currentBatchSize * 4 * this.vertSize;

    var worldTransform = tilingSprite.worldTransform;

    var a = worldTransform[0];
    var b = worldTransform[3];
    var c = worldTransform[1];
    var d = worldTransform[4];
    var tx = worldTransform[2];
    var ty = worldTransform[5];

    // xy
    verticies[index++] = a * w1 + c * h1 + tx;
    verticies[index++] = d * h1 + b * w1 + ty;
    // uv
    verticies[index++] = uvs[0];
    verticies[index++] = uvs[1];
    // color
    verticies[index++] = alpha;
    verticies[index++] = tint;

    // xy
    verticies[index++] = a * w0 + c * h1 + tx;
    verticies[index++] = d * h1 + b * w0 + ty;
    // uv
    verticies[index++] = uvs[2];
    verticies[index++] = uvs[3];
    // color
    verticies[index++] = alpha;
    verticies[index++] = tint;

    // xy
    verticies[index++] = a * w0 + c * h0 + tx;
    verticies[index++] = d * h0 + b * w0 + ty;
    // uv
    verticies[index++] = uvs[4];
    verticies[index++] = uvs[5];
    // color
    verticies[index++] = alpha;
    verticies[index++] = tint;

    // xy
    verticies[index++] = a * w1 + c * h0 + tx;
    verticies[index++] = d * h0 + b * w1 + ty;
    // uv
    verticies[index++] = uvs[6];
    verticies[index++] = uvs[7];
    // color
    verticies[index++] = alpha;
    verticies[index++] = tint;

    // increment the batchs
    this.currentBatchSize++;
};

PIXI.WebGLSpriteBatch.prototype.flush = function()
{
    // If the batch is length 0 then return as there is nothing to draw
    if (this.currentBatchSize===0)return;

    var gl = this.gl;

    // bind the current texture
    gl.bindTexture(gl.TEXTURE_2D, this.currentBaseTexture._glTextures[gl.id] || PIXI.createWebGLTexture(this.currentBaseTexture, gl));

    // upload the verts to the buffer
    var view = this.vertices.subarray(0, this.currentBatchSize * 4 * this.vertSize);
    gl.bufferSubData(gl.ARRAY_BUFFER, 0, view);

    // now draw those suckas!
    gl.drawElements(gl.TRIANGLES, this.currentBatchSize * 6, gl.UNSIGNED_SHORT, 0);

    // then reset the batch!
    this.currentBatchSize = 0;

    // increment the draw count
    this.renderSession.drawCount++;
};


PIXI.WebGLSpriteBatch.prototype.stop = function()
{
    this.flush();
};

PIXI.WebGLSpriteBatch.prototype.start = function()
{
    var gl = this.gl;

    // bind the main texture
    gl.activeTexture(gl.TEXTURE0);

    // bind the buffers
    gl.bindBuffer(gl.ARRAY_BUFFER, this.vertexBuffer);
    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indexBuffer);

    // set the projection
    var projection = this.renderSession.projection;
    gl.uniform2f(this.shader.projectionVector, projection.x, projection.y);

    // set the pointers
    var stride =  this.vertSize * 4;
    gl.vertexAttribPointer(this.shader.aVertexPosition, 2, gl.FLOAT, false, stride, 0);
    gl.vertexAttribPointer(this.shader.aTextureCoord, 2, gl.FLOAT, false, stride, 2 * 4);
    gl.vertexAttribPointer(this.shader.colorAttribute, 2, gl.FLOAT, false, stride, 4 * 4);

    // set the blend mode..
    if(this.currentBlendMode !== PIXI.blendModes.NORMAL)
    {
        this.setBlendMode(PIXI.blendModes.NORMAL);
    }
};

PIXI.WebGLSpriteBatch.prototype.setBlendMode = function(blendMode)
{
    this.flush();

    this.currentBlendMode = blendMode;

    var blendModeWebGL = PIXI.blendModesWebGL[this.currentBlendMode];
    this.gl.blendFunc(blendModeWebGL[0], blendModeWebGL[1]);
};



/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */


PIXI.WebGLFilterManager = function(gl, transparent)
{
    this.transparent = transparent;

    this.filterStack = [];

    this.offsetX = 0;
    this.offsetY = 0;

    this.setContext(gl);
};

// API

PIXI.WebGLFilterManager.prototype.setContext = function(gl)
{
    this.gl = gl;
    this.texturePool = [];

    this.initShaderBuffers();
};

PIXI.WebGLFilterManager.prototype.begin = function(renderSession, buffer)
{
    this.renderSession = renderSession;
    this.defaultShader = renderSession.shaderManager.defaultShader;

    var projection = this.renderSession.projection;

    this.width = projection.x * 2;
    this.height = -projection.y * 2;
    this.buffer = buffer;
};

PIXI.WebGLFilterManager.prototype.pushFilter = function(filterBlock)
{
    var gl = this.gl;

    var projection = this.renderSession.projection;
    var offset = this.renderSession.offset;


    // filter program
    // OPTIMISATION - the first filter is free if its a simple color change?
    this.filterStack.push(filterBlock);

    var filter = filterBlock.filterPasses[0];

    this.offsetX += filterBlock.target.filterArea.x;
    this.offsetY += filterBlock.target.filterArea.y;

    var texture = this.texturePool.pop();
    if(!texture)
    {
        texture = new PIXI.FilterTexture(this.gl, this.width, this.height);
    }
    else
    {
        texture.resize(this.width, this.height);
    }

    gl.bindTexture(gl.TEXTURE_2D,  texture.texture);

//    this.getBounds(filterBlock.target);

    filterBlock.target.filterArea = filterBlock.target.getBounds();
   // console.log(filterBlock.target.filterArea)
   // console.log(filterBlock.target.filterArea);
    // addpadding?
    //displayObject.filterArea.x

    var filterArea = filterBlock.target.filterArea;

    var padidng = filter.padding;
    filterArea.x -= padidng;
    filterArea.y -= padidng;
    filterArea.width += padidng * 2;
    filterArea.height += padidng * 2;

    // cap filter to screen size..
    if(filterArea.x < 0)filterArea.x = 0;
    if(filterArea.width > this.width)filterArea.width = this.width;
    if(filterArea.y < 0)filterArea.y = 0;
    if(filterArea.height > this.height)filterArea.height = this.height;

    //gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA,  filterArea.width, filterArea.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
    gl.bindFramebuffer(gl.FRAMEBUFFER, texture.frameBuffer);

    //console.log(filterArea)
    // set view port
    gl.viewport(0, 0, filterArea.width, filterArea.height);

    projection.x = filterArea.width/2;
    projection.y = -filterArea.height/2;

    offset.x = -filterArea.x;
    offset.y = -filterArea.y;

    //console.log(PIXI.defaultShader.projectionVector)
    // update projection
    gl.uniform2f(this.defaultShader.projectionVector, filterArea.width/2, -filterArea.height/2);
    gl.uniform2f(this.defaultShader.offsetVector, -filterArea.x, -filterArea.y);
    //PIXI.primitiveProgram

    gl.colorMask(true, true, true, true);
    gl.clearColor(0,0,0, 0);
    gl.clear(gl.COLOR_BUFFER_BIT);

    //filter.texture = texture;
    filterBlock._glFilterTexture = texture;

    //console.log("PUSH")
};


PIXI.WebGLFilterManager.prototype.popFilter = function()
{
    var gl = this.gl;
    var filterBlock = this.filterStack.pop();
    var filterArea = filterBlock.target.filterArea;
    var texture = filterBlock._glFilterTexture;
    var projection = this.renderSession.projection;
    var offset = this.renderSession.offset;

    if(filterBlock.filterPasses.length > 1)
    {
        gl.viewport(0, 0, filterArea.width, filterArea.height);

        gl.bindBuffer(gl.ARRAY_BUFFER, this.vertexBuffer);

        this.vertexArray[0] = 0;
        this.vertexArray[1] = filterArea.height;

        this.vertexArray[2] = filterArea.width;
        this.vertexArray[3] = filterArea.height;

        this.vertexArray[4] = 0;
        this.vertexArray[5] = 0;

        this.vertexArray[6] = filterArea.width;
        this.vertexArray[7] = 0;

        gl.bufferSubData(gl.ARRAY_BUFFER, 0, this.vertexArray);

        gl.bindBuffer(gl.ARRAY_BUFFER, this.uvBuffer);
        // nnow set the uvs..
        this.uvArray[2] = filterArea.width/this.width;
        this.uvArray[5] = filterArea.height/this.height;
        this.uvArray[6] = filterArea.width/this.width;
        this.uvArray[7] = filterArea.height/this.height;

        gl.bufferSubData(gl.ARRAY_BUFFER, 0, this.uvArray);

        var inputTexture = texture;
        var outputTexture = this.texturePool.pop();
        if(!outputTexture)outputTexture = new PIXI.FilterTexture(this.gl, this.width, this.height);

        // need to clear this FBO as it may have some left over elements from a prvious filter.
        gl.bindFramebuffer(gl.FRAMEBUFFER, outputTexture.frameBuffer );
        gl.clear(gl.COLOR_BUFFER_BIT);

        gl.disable(gl.BLEND);

        for (var i = 0; i < filterBlock.filterPasses.length-1; i++)
        {
            var filterPass = filterBlock.filterPasses[i];

            gl.bindFramebuffer(gl.FRAMEBUFFER, outputTexture.frameBuffer );

            // set texture
            gl.activeTexture(gl.TEXTURE0);
            gl.bindTexture(gl.TEXTURE_2D, inputTexture.texture);

            // draw texture..
            //filterPass.applyFilterPass(filterArea.width, filterArea.height);
            this.applyFilterPass(filterPass, filterArea, filterArea.width, filterArea.height);

            // swap the textures..
            var temp = inputTexture;
            inputTexture = outputTexture;
            outputTexture = temp;
        }

        gl.enable(gl.BLEND);

        texture = inputTexture;
        this.texturePool.push(outputTexture);
    }

    var filter = filterBlock.filterPasses[filterBlock.filterPasses.length-1];

    this.offsetX -= filterArea.x;
    this.offsetY -= filterArea.y;


    var sizeX = this.width;
    var sizeY = this.height;

    var offsetX = 0;
    var offsetY = 0;

    var buffer = this.buffer;

    // time to render the filters texture to the previous scene
    if(this.filterStack.length === 0)
    {
        gl.colorMask(true, true, true, this.transparent);
    }
    else
    {
        var currentFilter = this.filterStack[this.filterStack.length-1];
        filterArea = currentFilter.target.filterArea;

        sizeX = filterArea.width;
        sizeY = filterArea.height;

        offsetX = filterArea.x;
        offsetY = filterArea.y;

        buffer =  currentFilter._glFilterTexture.frameBuffer;
    }



    // TODO need toremove thease global elements..
    projection.x = sizeX/2;
    projection.y = -sizeY/2;

    offset.x = offsetX;
    offset.y = offsetY;

    filterArea = filterBlock.target.filterArea;

    var x = filterArea.x-offsetX;
    var y = filterArea.y-offsetY;

    // update the buffers..
    // make sure to flip the y!
    gl.bindBuffer(gl.ARRAY_BUFFER, this.vertexBuffer);

    this.vertexArray[0] = x;
    this.vertexArray[1] = y + filterArea.height;

    this.vertexArray[2] = x + filterArea.width;
    this.vertexArray[3] = y + filterArea.height;

    this.vertexArray[4] = x;
    this.vertexArray[5] = y;

    this.vertexArray[6] = x + filterArea.width;
    this.vertexArray[7] = y;

    gl.bufferSubData(gl.ARRAY_BUFFER, 0, this.vertexArray);

    gl.bindBuffer(gl.ARRAY_BUFFER, this.uvBuffer);

    this.uvArray[2] = filterArea.width/this.width;
    this.uvArray[5] = filterArea.height/this.height;
    this.uvArray[6] = filterArea.width/this.width;
    this.uvArray[7] = filterArea.height/this.height;

    gl.bufferSubData(gl.ARRAY_BUFFER, 0, this.uvArray);

    gl.viewport(0, 0, sizeX, sizeY);
    // bind the buffer
    gl.bindFramebuffer(gl.FRAMEBUFFER, buffer );

    // set the blend mode!
    //gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)

    // set texture
    gl.activeTexture(gl.TEXTURE0);
    gl.bindTexture(gl.TEXTURE_2D, texture.texture);

    // apply!
    //filter.applyFilterPass(sizeX, sizeY);
    this.applyFilterPass(filter, filterArea, sizeX, sizeY);

    // now restore the regular shader..
    gl.useProgram(this.defaultShader.program);
    gl.uniform2f(this.defaultShader.projectionVector, sizeX/2, -sizeY/2);
    gl.uniform2f(this.defaultShader.offsetVector, -offsetX, -offsetY);

    // return the texture to the pool
    this.texturePool.push(texture);
    filterBlock._glFilterTexture = null;
};

PIXI.WebGLFilterManager.prototype.applyFilterPass = function(filter, filterArea, width, height)
{
    // use program
    var gl = this.gl;
    var shader = filter.shaders[gl.id];

    if(!shader)
    {
        shader = new PIXI.PixiShader(gl);

        shader.fragmentSrc = filter.fragmentSrc;
        shader.uniforms = filter.uniforms;
        shader.init();

        filter.shaders[gl.id] = shader;
    }

    // set the shader
    gl.useProgram(shader.program);

    gl.uniform2f(shader.projectionVector, width/2, -height/2);
    gl.uniform2f(shader.offsetVector, 0,0);

    if(filter.uniforms.dimensions)
    {
        //console.log(filter.uniforms.dimensions)
        filter.uniforms.dimensions.value[0] = this.width;//width;
        filter.uniforms.dimensions.value[1] = this.height;//height;
        filter.uniforms.dimensions.value[2] = this.vertexArray[0];
        filter.uniforms.dimensions.value[3] = this.vertexArray[5];//filterArea.height;
    //  console.log(this.vertexArray[5])
    }

    shader.syncUniforms();

    gl.bindBuffer(gl.ARRAY_BUFFER, this.vertexBuffer);
    gl.vertexAttribPointer(shader.aVertexPosition, 2, gl.FLOAT, false, 0, 0);

    gl.bindBuffer(gl.ARRAY_BUFFER, this.uvBuffer);
    gl.vertexAttribPointer(shader.aTextureCoord, 2, gl.FLOAT, false, 0, 0);

    gl.bindBuffer(gl.ARRAY_BUFFER, this.colorBuffer);
    gl.vertexAttribPointer(shader.colorAttribute, 2, gl.FLOAT, false, 0, 0);

    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indexBuffer);

    // draw the filter...
    gl.drawElements(gl.TRIANGLES, 6, gl.UNSIGNED_SHORT, 0 );

    this.renderSession.drawCount++;
};

PIXI.WebGLFilterManager.prototype.initShaderBuffers = function()
{
    var gl = this.gl;

    // create some buffers
    this.vertexBuffer = gl.createBuffer();
    this.uvBuffer = gl.createBuffer();
    this.colorBuffer = gl.createBuffer();
    this.indexBuffer = gl.createBuffer();


    // bind and upload the vertexs..
    // keep a refferance to the vertexFloatData..
    this.vertexArray = new Float32Array([0.0, 0.0,
                                         1.0, 0.0,
                                         0.0, 1.0,
                                         1.0, 1.0]);

    gl.bindBuffer(gl.ARRAY_BUFFER, this.vertexBuffer);
    gl.bufferData(
    gl.ARRAY_BUFFER,
    this.vertexArray,
    gl.STATIC_DRAW);


    // bind and upload the uv buffer
    this.uvArray = new Float32Array([0.0, 0.0,
                                     1.0, 0.0,
                                     0.0, 1.0,
                                     1.0, 1.0]);

    gl.bindBuffer(gl.ARRAY_BUFFER, this.uvBuffer);
    gl.bufferData(
    gl.ARRAY_BUFFER,
    this.uvArray,
    gl.STATIC_DRAW);

    this.colorArray = new Float32Array([1.0, 0xFFFFFF,
                                        1.0, 0xFFFFFF,
                                        1.0, 0xFFFFFF,
                                        1.0, 0xFFFFFF]);

    gl.bindBuffer(gl.ARRAY_BUFFER, this.colorBuffer);
    gl.bufferData(
    gl.ARRAY_BUFFER,
    this.colorArray,
    gl.STATIC_DRAW);

    // bind and upload the index
    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indexBuffer);
    gl.bufferData(
    gl.ELEMENT_ARRAY_BUFFER,
    new Uint16Array([0, 1, 2, 1, 3, 2]),
    gl.STATIC_DRAW);
};

PIXI.FilterTexture = function(gl, width, height)
{
    this.gl = gl;

    // next time to create a frame buffer and texture
    this.frameBuffer = gl.createFramebuffer();
    this.texture = gl.createTexture();

    gl.bindTexture(gl.TEXTURE_2D,  this.texture);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
    gl.bindFramebuffer(gl.FRAMEBUFFER, this.framebuffer );

    gl.bindFramebuffer(gl.FRAMEBUFFER, this.frameBuffer );
    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, this.texture, 0);

    this.resize(width, height);
};

PIXI.FilterTexture.prototype.clear = function()
{
    var gl = this.gl;

    gl.clearColor(0,0,0, 0);
    gl.clear(gl.COLOR_BUFFER_BIT);
};

PIXI.FilterTexture.prototype.resize = function(width, height)
{
    if(this.width === width && this.height === height) return;

    this.width = width;
    this.height = height;

    var gl = this.gl;

    gl.bindTexture(gl.TEXTURE_2D,  this.texture);
    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA,  width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);

};

/**
 * @author Mat Groves
 *
 *
 */

PIXI.CanvasMaskManager = function()
{

};

PIXI.CanvasMaskManager.prototype.pushMask = function(maskData, context)
{
    context.save();

    //maskData.visible = false;
    // maskData.alpha = 0;

    var cacheAlpha = maskData.alpha;
    var transform = maskData.worldTransform;

    context.setTransform(transform[0], transform[3], transform[1], transform[4], transform[2], transform[5]);

    PIXI.CanvasGraphics.renderGraphicsMask(maskData, context);

    context.clip();

    maskData.worldAlpha = cacheAlpha;
};

PIXI.CanvasMaskManager.prototype.popMask = function(context)
{
    context.restore();
};

/**
 * @author Mat Groves
 *
 *
 */

PIXI.CanvasTinter = function()
{
    /// this.textureCach
};

//PIXI.CanvasTinter.cachTint = true;


PIXI.CanvasTinter.getTintedTexture = function(sprite, color)
{
    //
    // cach on sprite
    // cach on texture
    // no cache

    var texture = sprite.texture;

    color = PIXI.CanvasTinter.roundColor(color);

    var stringColor = "#" + ("00000" + ( color | 0).toString(16)).substr(-6);

    texture.tintCache = texture.tintCache || {};

    if(texture.tintCache[stringColor]) return texture.tintCache[stringColor];

     // clone texture..
    var canvas = PIXI.CanvasTinter.canvas || document.createElement("canvas");

    //PIXI.CanvasTinter.tintWithPerPixel(texture, stringColor, canvas);


    PIXI.CanvasTinter.tintMethod(texture, color, canvas);

    if(PIXI.CanvasTinter.convertTintToImage)
    {
        // is this better?
        var tintImage = new Image();
        tintImage.src = canvas.toDataURL();

        texture.tintCache[stringColor] = tintImage;
    }
    else
    {

        texture.tintCache[stringColor] = canvas;
        // if we are not converting the texture to an image then we need to lose the refferance to the canvas
        PIXI.CanvasTinter.canvas = null;

    }

    return canvas;
};

PIXI.CanvasTinter.tintWithMultiply = function(texture, color, canvas)
{
    var context = canvas.getContext( "2d" );

    var frame = texture.frame;

    canvas.width = frame.width;
    canvas.height = frame.height;

    context.fillStyle = "#" + ("00000" + ( color | 0).toString(16)).substr(-6);

    context.fillRect(0, 0, frame.width, frame.height);

    context.globalCompositeOperation = "multiply";

    context.drawImage(texture.baseTexture.source,
                           frame.x,
                           frame.y,
                           frame.width,
                           frame.height,
                           0,
                           0,
                           frame.width,
                           frame.height);

    context.globalCompositeOperation = "destination-atop";

    context.drawImage(texture.baseTexture.source,
                           frame.x,
                           frame.y,
                           frame.width,
                           frame.height,
                           0,
                           0,
                           frame.width,
                           frame.height);
};

PIXI.CanvasTinter.tintWithOverlay = function(texture, color, canvas)
{
    var context = canvas.getContext( "2d" );

    var frame = texture.frame;

    canvas.width = frame.width;
    canvas.height = frame.height;



    context.globalCompositeOperation = "copy";
    context.fillStyle = "#" + ("00000" + ( color | 0).toString(16)).substr(-6);
    context.fillRect(0, 0, frame.width, frame.height);

    context.globalCompositeOperation = "destination-atop";
    context.drawImage(texture.baseTexture.source,
                           frame.x,
                           frame.y,
                           frame.width,
                           frame.height,
                           0,
                           0,
                           frame.width,
                           frame.height);


    //context.globalCompositeOperation = "copy";

};


PIXI.CanvasTinter.tintWithPerPixel = function(texture, color, canvas)
{
    var context = canvas.getContext( "2d" );

    var frame = texture.frame;

    canvas.width = frame.width;
    canvas.height = frame.height;

    context.globalCompositeOperation = "copy";
    context.drawImage(texture.baseTexture.source,
                           frame.x,
                           frame.y,
                           frame.width,
                           frame.height,
                           0,
                           0,
                           frame.width,
                           frame.height);

    var rgbValues = PIXI.hex2rgb(color);
    var r = rgbValues[0], g = rgbValues[1], b = rgbValues[2];

    var pixelData = context.getImageData(0, 0, frame.width, frame.height);

    var pixels = pixelData.data;

    for (var i = 0; i < pixels.length; i += 4)
    {
        pixels[i+0] *= r;
        pixels[i+1] *= g;
        pixels[i+2] *= b;
    }

    context.putImageData(pixelData, 0, 0);
};

PIXI.CanvasTinter.roundColor = function(color)
{
    var step = PIXI.CanvasTinter.cacheStepsPerColorChannel;

    var rgbValues = PIXI.hex2rgb(color);

    rgbValues[0] = Math.min(255, Math.round(rgbValues[0] / step) * step);
    rgbValues[1] = Math.min(255, Math.round(rgbValues[1] / step) * step);
    rgbValues[2] = Math.min(255, Math.round(rgbValues[2] / step) * step);

    return PIXI.rgb2hex(rgbValues);
};

PIXI.CanvasTinter.cacheStepsPerColorChannel = 8;
PIXI.CanvasTinter.convertTintToImage = false;

PIXI.CanvasTinter.canUseMultiply = PIXI.canUseNewCanvasBlendModes();

PIXI.CanvasTinter.tintMethod = PIXI.CanvasTinter.canUseMultiply ? PIXI.CanvasTinter.tintWithMultiply :  PIXI.CanvasTinter.tintWithPerPixel;



/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * the CanvasRenderer draws the stage and all its content onto a 2d canvas. This renderer should be used for browsers that do not support webGL.
 * Dont forget to add the view to your DOM or you will not see anything :)
 *
 * @class CanvasRenderer
 * @constructor
 * @param width=0 {Number} the width of the canvas view
 * @param height=0 {Number} the height of the canvas view
 * @param view {Canvas} the canvas to use as a view, optional
 * @param transparent=false {Boolean} the transparency of the render view, default false
 */
PIXI.CanvasRenderer = function(width, height, view, transparent)
{
    PIXI.defaultRenderer = PIXI.defaultRenderer || this;

    this.type = PIXI.CANVAS_RENDERER;

    this.transparent = transparent;

    if(!PIXI.blendModesCanvas)
    {
        PIXI.blendModesCanvas = [];

        if(PIXI.canUseNewCanvasBlendModes())
        {
            PIXI.blendModesCanvas[PIXI.blendModes.NORMAL]   = "source-over";
            PIXI.blendModesCanvas[PIXI.blendModes.ADD]      = "lighter"; //IS THIS OK???
            PIXI.blendModesCanvas[PIXI.blendModes.MULTIPLY] = "multiply";
            PIXI.blendModesCanvas[PIXI.blendModes.SCREEN]   = "screen";
        }
        else
        {
            // this means that the browser does not support the cool new blend modes in canvas "cough" ie "cough"
            PIXI.blendModesCanvas[PIXI.blendModes.NORMAL]   = "source-over";
            PIXI.blendModesCanvas[PIXI.blendModes.ADD]      = "lighter"; //IS THIS OK???
            PIXI.blendModesCanvas[PIXI.blendModes.MULTIPLY] = "source-over";
            PIXI.blendModesCanvas[PIXI.blendModes.SCREEN]   = "source-over";
        }
    }

    /**
     * The width of the canvas view
     *
     * @property width
     * @type Number
     * @default 800
     */
    this.width = width || 800;

    /**
     * The height of the canvas view
     *
     * @property height
     * @type Number
     * @default 600
     */
    this.height = height || 600;

    /**
     * The canvas element that the everything is drawn to
     *
     * @property view
     * @type Canvas
     */
    this.view = view || document.createElement( "canvas" );

    /**
     * The canvas context that the everything is drawn to
     * @property context
     * @type Canvas 2d Context
     */
    this.context = this.view.getContext( "2d" );

    //some filter variables
    this.smoothProperty = null;

    if("imageSmoothingEnabled" in this.context)
        this.smoothProperty = "imageSmoothingEnabled";
    else if("webkitImageSmoothingEnabled" in this.context)
        this.smoothProperty = "webkitImageSmoothingEnabled";
    else if("mozImageSmoothingEnabled" in this.context)
        this.smoothProperty = "mozImageSmoothingEnabled";
    else if("oImageSmoothingEnabled" in this.context)
        this.smoothProperty = "oImageSmoothingEnabled";

    this.scaleMode = null;

    this.refresh = true;
    // hack to enable some hardware acceleration!
    //this.view.style["transform"] = "translatez(0)";

    this.view.width = this.width;
    this.view.height = this.height;
    this.count = 0;

    this.maskManager = new PIXI.CanvasMaskManager();

    this.renderSession = {};
    this.renderSession.context = this.context;
    this.renderSession.maskManager = this.maskManager;

};

// constructor
PIXI.CanvasRenderer.prototype.constructor = PIXI.CanvasRenderer;

/**
 * Renders the stage to its canvas view
 *
 * @method render
 * @param stage {Stage} the Stage element to be rendered
 */
PIXI.CanvasRenderer.prototype.render = function(stage)
{
    //stage.__childrenAdded = [];
    //stage.__childrenRemoved = [];

    // update textures if need be
    PIXI.texturesToUpdate.length = 0;
    PIXI.texturesToDestroy.length = 0;

    stage.updateTransform();

    // update the background color
    if(this.view.style.backgroundColor !== stage.backgroundColorString && !this.transparent)
        this.view.style.backgroundColor = stage.backgroundColorString;

    this.context.setTransform(1,0,0,1,0,0);
    this.context.clearRect(0, 0, this.width, this.height);
    this.renderDisplayObject(stage);
    //as

    // run interaction!
    if(stage.interactive)
    {
        //need to add some events!
        if(!stage._interactiveEventsAdded)
        {
            stage._interactiveEventsAdded = true;
            stage.interactionManager.setTarget(this);
        }
    }

    // remove frame updates..
    if(PIXI.Texture.frameUpdates.length > 0)
    {
        PIXI.Texture.frameUpdates.length = 0;
    }
};

/**
 * resizes the canvas view to the specified width and height
 *
 * @method resize
 * @param width {Number} the new width of the canvas view
 * @param height {Number} the new height of the canvas view
 */
PIXI.CanvasRenderer.prototype.resize = function(width, height)
{
    this.width = width;
    this.height = height;

    this.view.width = width;
    this.view.height = height;
};

/**
 * Renders a display object
 *
 * @method renderDisplayObject
 * @param displayObject {DisplayObject} The displayObject to render
 * @private
 */
PIXI.CanvasRenderer.prototype.renderDisplayObject = function(displayObject, context)
{
    // no loger recurrsive!
    //var transform;
    //var context = this.context;

    this.renderSession.context = context || this.context;
    displayObject._renderCanvas(this.renderSession);
};

/**
 * Renders a flat strip
 *
 * @method renderStripFlat
 * @param strip {Strip} The Strip to render
 * @private
 */
PIXI.CanvasRenderer.prototype.renderStripFlat = function(strip)
{
    var context = this.context;
    var verticies = strip.verticies;

    var length = verticies.length/2;
    this.count++;

    context.beginPath();
    for (var i=1; i < length-2; i++)
    {
        // draw some triangles!
        var index = i*2;

        var x0 = verticies[index],   x1 = verticies[index+2], x2 = verticies[index+4];
        var y0 = verticies[index+1], y1 = verticies[index+3], y2 = verticies[index+5];

        context.moveTo(x0, y0);
        context.lineTo(x1, y1);
        context.lineTo(x2, y2);
    }

    context.fillStyle = "#FF0000";
    context.fill();
    context.closePath();
};

/**
 * Renders a strip
 *
 * @method renderStrip
 * @param strip {Strip} The Strip to render
 * @private
 */
PIXI.CanvasRenderer.prototype.renderStrip = function(strip)
{
    var context = this.context;

    // draw triangles!!
    var verticies = strip.verticies;
    var uvs = strip.uvs;

    var length = verticies.length/2;
    this.count++;

    for (var i = 1; i < length-2; i++)
    {
        // draw some triangles!
        var index = i*2;

        var x0 = verticies[index],   x1 = verticies[index+2], x2 = verticies[index+4];
        var y0 = verticies[index+1], y1 = verticies[index+3], y2 = verticies[index+5];

        var u0 = uvs[index] * strip.texture.width,   u1 = uvs[index+2] * strip.texture.width, u2 = uvs[index+4]* strip.texture.width;
        var v0 = uvs[index+1]* strip.texture.height, v1 = uvs[index+3] * strip.texture.height, v2 = uvs[index+5]* strip.texture.height;

        context.save();
        context.beginPath();
        context.moveTo(x0, y0);
        context.lineTo(x1, y1);
        context.lineTo(x2, y2);
        context.closePath();

        context.clip();

        // Compute matrix transform
        var delta = u0*v1 + v0*u2 + u1*v2 - v1*u2 - v0*u1 - u0*v2;
        var deltaA = x0*v1 + v0*x2 + x1*v2 - v1*x2 - v0*x1 - x0*v2;
        var deltaB = u0*x1 + x0*u2 + u1*x2 - x1*u2 - x0*u1 - u0*x2;
        var deltaC = u0*v1*x2 + v0*x1*u2 + x0*u1*v2 - x0*v1*u2 - v0*u1*x2 - u0*x1*v2;
        var deltaD = y0*v1 + v0*y2 + y1*v2 - v1*y2 - v0*y1 - y0*v2;
        var deltaE = u0*y1 + y0*u2 + u1*y2 - y1*u2 - y0*u1 - u0*y2;
        var deltaF = u0*v1*y2 + v0*y1*u2 + y0*u1*v2 - y0*v1*u2 - v0*u1*y2 - u0*y1*v2;

        context.transform(deltaA / delta, deltaD / delta,
                            deltaB / delta, deltaE / delta,
                            deltaC / delta, deltaF / delta);

        context.drawImage(strip.texture.baseTexture.source, 0, 0);
        context.restore();
    }
};

PIXI.CanvasBuffer = function(width, height)
{
    this.width = width;
    this.height = height;

    this.canvas = document.createElement( "canvas" );
    this.context = this.canvas.getContext( "2d" );

//     this.context.f
    this.canvas.width = width;
    this.canvas.height = height;
};

PIXI.CanvasBuffer.prototype.clear = function()
{
    this.context.clearRect(0,0, this.width, this.height);
};

PIXI.CanvasBuffer.prototype.resize = function(width, height)
{
    this.width = this.canvas.width = width;
    this.height = this.canvas.height = height;
};


/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */


/**
 * A set of functions used by the canvas renderer to draw the primitive graphics data
 *
 * @class CanvasGraphics
 */
PIXI.CanvasGraphics = function()
{

};


/*
 * Renders the graphics object
 *
 * @static
 * @private
 * @method renderGraphics
 * @param graphics {Graphics}
 * @param context {Context2D}
 */
PIXI.CanvasGraphics.renderGraphics = function(graphics, context)
{
    var worldAlpha = graphics.worldAlpha;
    var color = '';

    for (var i = 0; i < graphics.graphicsData.length; i++)
    {
        var data = graphics.graphicsData[i];
        var points = data.points;

        context.strokeStyle = color = '#' + ('00000' + ( data.lineColor | 0).toString(16)).substr(-6);

        context.lineWidth = data.lineWidth;

        if(data.type === PIXI.Graphics.POLY)
        {
            context.beginPath();

            context.moveTo(points[0], points[1]);

            for (var j=1; j < points.length/2; j++)
            {
                context.lineTo(points[j * 2], points[j * 2 + 1]);
            }

            // if the first and last point are the same close the path - much neater :)
            if(points[0] === points[points.length-2] && points[1] === points[points.length-1])
            {
                context.closePath();
            }

            if(data.fill)
            {
                context.globalAlpha = data.fillAlpha * worldAlpha;
                context.fillStyle = color = '#' + ('00000' + ( data.fillColor | 0).toString(16)).substr(-6);
                context.fill();
            }
            if(data.lineWidth)
            {
                context.globalAlpha = data.lineAlpha * worldAlpha;
                context.stroke();
            }
        }
        else if(data.type === PIXI.Graphics.RECT)
        {

            if(data.fillColor || data.fillColor === 0)
            {
                context.globalAlpha = data.fillAlpha * worldAlpha;
                context.fillStyle = color = '#' + ('00000' + ( data.fillColor | 0).toString(16)).substr(-6);
                context.fillRect(points[0], points[1], points[2], points[3]);

            }
            if(data.lineWidth)
            {
                context.globalAlpha = data.lineAlpha * worldAlpha;
                context.strokeRect(points[0], points[1], points[2], points[3]);
            }

        }
        else if(data.type === PIXI.Graphics.CIRC)
        {
            // TODO - need to be Undefined!
            context.beginPath();
            context.arc(points[0], points[1], points[2],0,2*Math.PI);
            context.closePath();

            if(data.fill)
            {
                context.globalAlpha = data.fillAlpha * worldAlpha;
                context.fillStyle = color = '#' + ('00000' + ( data.fillColor | 0).toString(16)).substr(-6);
                context.fill();
            }
            if(data.lineWidth)
            {
                context.globalAlpha = data.lineAlpha * worldAlpha;
                context.stroke();
            }
        }
        else if(data.type === PIXI.Graphics.ELIP)
        {

            // ellipse code taken from: http://stackoverflow.com/questions/2172798/how-to-draw-an-oval-in-html5-canvas

            var ellipseData =  data.points;

            var w = ellipseData[2] * 2;
            var h = ellipseData[3] * 2;

            var x = ellipseData[0] - w/2;
            var y = ellipseData[1] - h/2;

            context.beginPath();

            var kappa = 0.5522848,
                ox = (w / 2) * kappa, // control point offset horizontal
                oy = (h / 2) * kappa, // control point offset vertical
                xe = x + w,           // x-end
                ye = y + h,           // y-end
                xm = x + w / 2,       // x-middle
                ym = y + h / 2;       // y-middle

            context.moveTo(x, ym);
            context.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y);
            context.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym);
            context.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye);
            context.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym);

            context.closePath();

            if(data.fill)
            {
                context.globalAlpha = data.fillAlpha * worldAlpha;
                context.fillStyle = color = '#' + ('00000' + ( data.fillColor | 0).toString(16)).substr(-6);
                context.fill();
            }
            if(data.lineWidth)
            {
                context.globalAlpha = data.lineAlpha * worldAlpha;
                context.stroke();
            }
        }
    }
};

/*
 * Renders a graphics mask
 *
 * @static
 * @private
 * @method renderGraphicsMask
 * @param graphics {Graphics}
 * @param context {Context2D}
 */
PIXI.CanvasGraphics.renderGraphicsMask = function(graphics, context)
{
    var len = graphics.graphicsData.length;

    if(len === 0) return;

    if(len > 1)
    {
        len = 1;
        window.console.log('Pixi.js warning: masks in canvas can only mask using the first path in the graphics object');
    }

    for (var i = 0; i < 1; i++)
    {
        var data = graphics.graphicsData[i];
        var points = data.points;

        if(data.type === PIXI.Graphics.POLY)
        {
            context.beginPath();
            context.moveTo(points[0], points[1]);

            for (var j=1; j < points.length/2; j++)
            {
                context.lineTo(points[j * 2], points[j * 2 + 1]);
            }

            // if the first and last point are the same close the path - much neater :)
            if(points[0] === points[points.length-2] && points[1] === points[points.length-1])
            {
                context.closePath();
            }

        }
        else if(data.type === PIXI.Graphics.RECT)
        {
            context.beginPath();
            context.rect(points[0], points[1], points[2], points[3]);
            context.closePath();
        }
        else if(data.type === PIXI.Graphics.CIRC)
        {
            // TODO - need to be Undefined!
            context.beginPath();
            context.arc(points[0], points[1], points[2],0,2*Math.PI);
            context.closePath();
        }
        else if(data.type === PIXI.Graphics.ELIP)
        {

            // ellipse code taken from: http://stackoverflow.com/questions/2172798/how-to-draw-an-oval-in-html5-canvas
            var ellipseData =  data.points;

            var w = ellipseData[2] * 2;
            var h = ellipseData[3] * 2;

            var x = ellipseData[0] - w/2;
            var y = ellipseData[1] - h/2;

            context.beginPath();

            var kappa = 0.5522848,
                ox = (w / 2) * kappa, // control point offset horizontal
                oy = (h / 2) * kappa, // control point offset vertical
                xe = x + w,           // x-end
                ye = y + h,           // y-end
                xm = x + w / 2,       // x-middle
                ym = y + h / 2;       // y-middle

            context.moveTo(x, ym);
            context.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y);
            context.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym);
            context.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye);
            context.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym);
            context.closePath();
        }
    }
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */


/**
 * The Graphics class contains a set of methods that you can use to create primitive shapes and lines.
 * It is important to know that with the webGL renderer only simple polys can be filled at this stage
 * Complex polys will not be filled. Heres an example of a complex poly: http://www.goodboydigital.com/wp-content/uploads/2013/06/complexPolygon.png
 *
 * @class Graphics
 * @extends DisplayObjectContainer
 * @constructor
 */
PIXI.Graphics = function()
{
    PIXI.DisplayObjectContainer.call( this );

    this.renderable = true;

    /**
     * The alpha of the fill of this graphics object
     *
     * @property fillAlpha
     * @type Number
     */
    this.fillAlpha = 1;

    /**
     * The width of any lines drawn
     *
     * @property lineWidth
     * @type Number
     */
    this.lineWidth = 0;

    /**
     * The color of any lines drawn
     *
     * @property lineColor
     * @type String
     */
    this.lineColor = "black";

    /**
     * Graphics data
     *
     * @property graphicsData
     * @type Array
     * @private
     */
    this.graphicsData = [];

    this.tint = 0xFFFFFF;// * Math.random();

    this.blendMode = PIXI.blendModes.NORMAL;

    /**
     * Current path
     *
     * @property currentPath
     * @type Object
     * @private
     */
    this.currentPath = {points:[]};

    this._webGL = [];

    this.isMask = false;

    this.bounds = null;

    this.boundsPadding = 10;
};

// constructor
PIXI.Graphics.prototype = Object.create( PIXI.DisplayObjectContainer.prototype );
PIXI.Graphics.prototype.constructor = PIXI.Graphics;

/**
 * If cacheAsBitmap is true the graphics object will then be rendered as if it was a sprite.
 * This is useful if your graphics element does not change often as it will speed up the rendering of the object
 * It is also usful as the graphics object will always be aliased because it will be rendered using canvas
 * Not recommended if you are conastanly redrawing the graphics element.
 *
 * @property cacheAsBitmap
 * @default false
 * @type Boolean
 * @private
 */
Object.defineProperty(PIXI.Graphics.prototype, "cacheAsBitmap", {
    get: function() {
        return  this._cacheAsBitmap;
    },
    set: function(value) {
        this._cacheAsBitmap = value;

        if(this._cacheAsBitmap)
        {
            this._generateCachedSprite();
        }
        else
        {
            this.destroyCachedSprite();
            this.dirty = true;
        }

    }
});


/**
 * Specifies a line style used for subsequent calls to Graphics methods such as the lineTo() method or the drawCircle() method.
 *
 * @method lineStyle
 * @param lineWidth {Number} width of the line to draw, will update the object's stored style
 * @param color {Number} color of the line to draw, will update the object's stored style
 * @param alpha {Number} alpha of the line to draw, will update the object's stored style
 */
PIXI.Graphics.prototype.lineStyle = function(lineWidth, color, alpha)
{
    if (!this.currentPath.points.length) this.graphicsData.pop();

    this.lineWidth = lineWidth || 0;
    this.lineColor = color || 0;
    this.lineAlpha = (arguments.length < 3) ? 1 : alpha;

    this.currentPath = {lineWidth:this.lineWidth, lineColor:this.lineColor, lineAlpha:this.lineAlpha,
                        fillColor:this.fillColor, fillAlpha:this.fillAlpha, fill:this.filling, points:[], type:PIXI.Graphics.POLY};

    this.graphicsData.push(this.currentPath);
};

/**
 * Moves the current drawing position to (x, y).
 *
 * @method moveTo
 * @param x {Number} the X coord to move to
 * @param y {Number} the Y coord to move to
 */
PIXI.Graphics.prototype.moveTo = function(x, y)
{
    if (!this.currentPath.points.length) this.graphicsData.pop();

    this.currentPath = this.currentPath = {lineWidth:this.lineWidth, lineColor:this.lineColor, lineAlpha:this.lineAlpha,
                        fillColor:this.fillColor, fillAlpha:this.fillAlpha, fill:this.filling, points:[], type:PIXI.Graphics.POLY};

    this.currentPath.points.push(x, y);

    this.graphicsData.push(this.currentPath);
};

/**
 * Draws a line using the current line style from the current drawing position to (x, y);
 * the current drawing position is then set to (x, y).
 *
 * @method lineTo
 * @param x {Number} the X coord to draw to
 * @param y {Number} the Y coord to draw to
 */
PIXI.Graphics.prototype.lineTo = function(x, y)
{
    this.currentPath.points.push(x, y);
    this.dirty = true;
};

/**
 * Specifies a simple one-color fill that subsequent calls to other Graphics methods
 * (such as lineTo() or drawCircle()) use when drawing.
 *
 * @method beginFill
 * @param color {uint} the color of the fill
 * @param alpha {Number} the alpha
 */
PIXI.Graphics.prototype.beginFill = function(color, alpha)
{

    this.filling = true;
    this.fillColor = color || 0;
    this.fillAlpha = (arguments.length < 2) ? 1 : alpha;
};

/**
 * Applies a fill to the lines and shapes that were added since the last call to the beginFill() method.
 *
 * @method endFill
 */
PIXI.Graphics.prototype.endFill = function()
{
    this.filling = false;
    this.fillColor = null;
    this.fillAlpha = 1;
};

/**
 * @method drawRect
 *
 * @param x {Number} The X coord of the top-left of the rectangle
 * @param y {Number} The Y coord of the top-left of the rectangle
 * @param width {Number} The width of the rectangle
 * @param height {Number} The height of the rectangle
 */
PIXI.Graphics.prototype.drawRect = function( x, y, width, height )
{
    if (!this.currentPath.points.length) this.graphicsData.pop();

    this.currentPath = {lineWidth:this.lineWidth, lineColor:this.lineColor, lineAlpha:this.lineAlpha,
                        fillColor:this.fillColor, fillAlpha:this.fillAlpha, fill:this.filling,
                        points:[x, y, width, height], type:PIXI.Graphics.RECT};

    this.graphicsData.push(this.currentPath);
    this.dirty = true;
};

/**
 * Draws a circle.
 *
 * @method drawCircle
 * @param x {Number} The X coord of the center of the circle
 * @param y {Number} The Y coord of the center of the circle
 * @param radius {Number} The radius of the circle
 */
PIXI.Graphics.prototype.drawCircle = function( x, y, radius)
{

    if (!this.currentPath.points.length) this.graphicsData.pop();

    this.currentPath = {lineWidth:this.lineWidth, lineColor:this.lineColor, lineAlpha:this.lineAlpha,
                        fillColor:this.fillColor, fillAlpha:this.fillAlpha, fill:this.filling,
                        points:[x, y, radius, radius], type:PIXI.Graphics.CIRC};

    this.graphicsData.push(this.currentPath);
    this.dirty = true;
};

/**
 * Draws an ellipse.
 *
 * @method drawEllipse
 * @param x {Number}
 * @param y {Number}
 * @param width {Number}
 * @param height {Number}
 */
PIXI.Graphics.prototype.drawEllipse = function( x, y, width, height)
{

    if (!this.currentPath.points.length) this.graphicsData.pop();

    this.currentPath = {lineWidth:this.lineWidth, lineColor:this.lineColor, lineAlpha:this.lineAlpha,
                        fillColor:this.fillColor, fillAlpha:this.fillAlpha, fill:this.filling,
                        points:[x, y, width, height], type:PIXI.Graphics.ELIP};

    this.graphicsData.push(this.currentPath);
    this.dirty = true;
};

/**
 * Clears the graphics that were drawn to this Graphics object, and resets fill and line style settings.
 *
 * @method clear
 */
PIXI.Graphics.prototype.clear = function()
{
    this.lineWidth = 0;
    this.filling = false;

    this.dirty = true;
    this.clearDirty = true;
    this.graphicsData = [];

    this.bounds = null; //new PIXI.Rectangle();
};

/**
 * Useful function that returns a texture of the graphics object that can then be used to create sprites
 * This can be quite useful if your geometry is complicated and needs to be reused multiple times.
 *
 * @method generateTexture
 * @return {Texture} a texture of the graphics object
 */
PIXI.Graphics.prototype.generateTexture = function()
{
    var bounds = this.getBounds();

    var canvasBuffer = new PIXI.CanvasBuffer(bounds.width, bounds.height);
    var texture = PIXI.Texture.fromCanvas(canvasBuffer.canvas);

    canvasBuffer.context.translate(-bounds.x,-bounds.y);

    PIXI.CanvasGraphics.renderGraphics(this, canvasBuffer.context);

    return texture;
};

PIXI.Graphics.prototype._renderWebGL = function(renderSession)
{
    // if the sprite is not visible or the alpha is 0 then no need to render this element
    if(this.visible === false || this.alpha === 0 || this.isMask === true)return;

    if(this._cacheAsBitmap)
    {

        if(this.dirty)
        {
            this._generateCachedSprite();
            // we will also need to update the texture on the gpu too!
            PIXI.updateWebGLTexture(this._cachedSprite.texture.baseTexture, renderSession.gl);

            this.dirty =  false;
        }

        PIXI.Sprite.prototype._renderWebGL.call(this._cachedSprite, renderSession);

        return;
    }
    else
    {
        renderSession.spriteBatch.stop();

        if(this._mask)renderSession.maskManager.pushMask(this.mask, renderSession);
        if(this._filters)renderSession.filterManager.pushFilter(this._filterBlock);

        // check blend mode
        if(this.blendMode !== renderSession.spriteBatch.currentBlendMode)
        {
            this.spriteBatch.currentBlendMode = this.blendMode;
            var blendModeWebGL = PIXI.blendModesWebGL[renderSession.spriteBatch.currentBlendMode];
            this.spriteBatch.gl.blendFunc(blendModeWebGL[0], blendModeWebGL[1]);
        }

        PIXI.WebGLGraphics.renderGraphics(this, renderSession);

        // only rende rif it has children!
        if(this.children.length)
        {
            renderSession.spriteBatch.start();

             // simple render children!
            for(var i=0, j=this.children.length; i<j; i++)
            {
                this.children[i]._renderWebGL(renderSession);
            }

            renderSession.spriteBatch.stop();
        }

        if(this._filters)renderSession.filterManager.popFilter();
        if(this._mask)renderSession.maskManager.popMask(renderSession);

        renderSession.drawCount++;

        renderSession.spriteBatch.start();
    }
};

PIXI.Graphics.prototype._renderCanvas = function(renderSession)
{
    // if the sprite is not visible or the alpha is 0 then no need to render this element
    if(this.visible === false || this.alpha === 0 || this.isMask === true)return;

    var context = renderSession.context;
    var transform = this.worldTransform;

    if(this.blendMode !== renderSession.currentBlendMode)
    {
        renderSession.currentBlendMode = this.blendMode;
        context.globalCompositeOperation = PIXI.blendModesCanvas[renderSession.currentBlendMode];
    }

    context.setTransform(transform[0], transform[3], transform[1], transform[4], transform[2], transform[5]);
    PIXI.CanvasGraphics.renderGraphics(this, context);

     // simple render children!
    for(var i=0, j=this.children.length; i<j; i++)
    {
        this.children[i]._renderCanvas(renderSession);
    }
};

PIXI.Graphics.prototype.getBounds = function()
{
    if(!this.bounds)this.updateBounds();

    var w0 = this.bounds.x;
    var w1 = this.bounds.width + this.bounds.x;

    var h0 = this.bounds.y;
    var h1 = this.bounds.height + this.bounds.y;

    var worldTransform = this.worldTransform;

    var a = worldTransform[0];
    var b = worldTransform[3];
    var c = worldTransform[1];
    var d = worldTransform[4];
    var tx = worldTransform[2];
    var ty = worldTransform[5];

    var x1 = a * w1 + c * h1 + tx;
    var y1 = d * h1 + b * w1 + ty;

    var x2 = a * w0 + c * h1 + tx;
    var y2 = d * h1 + b * w0 + ty;

    var x3 = a * w0 + c * h0 + tx;
    var y3 = d * h0 + b * w0 + ty;

    var x4 =  a * w1 + c * h0 + tx;
    var y4 =  d * h0 + b * w1 + ty;

    var maxX = -Infinity;
    var maxY = -Infinity;

    var minX = Infinity;
    var minY = Infinity;

    minX = x1 < minX ? x1 : minX;
    minX = x2 < minX ? x2 : minX;
    minX = x3 < minX ? x3 : minX;
    minX = x4 < minX ? x4 : minX;

    minY = y1 < minY ? y1 : minY;
    minY = y2 < minY ? y2 : minY;
    minY = y3 < minY ? y3 : minY;
    minY = y4 < minY ? y4 : minY;

    maxX = x1 > maxX ? x1 : maxX;
    maxX = x2 > maxX ? x2 : maxX;
    maxX = x3 > maxX ? x3 : maxX;
    maxX = x4 > maxX ? x4 : maxX;

    maxY = y1 > maxY ? y1 : maxY;
    maxY = y2 > maxY ? y2 : maxY;
    maxY = y3 > maxY ? y3 : maxY;
    maxY = y4 > maxY ? y4 : maxY;

    var bounds = this._bounds;

    bounds.x = minX;
    bounds.width = maxX - minX;

    bounds.y = minY;
    bounds.height = maxY - minY;

    return bounds;
};

PIXI.Graphics.prototype.updateBounds = function()
{

    var minX = Infinity;
    var maxX = -Infinity;

    var minY = Infinity;
    var maxY = -Infinity;

    var points, x, y;

    for (var i = 0; i < this.graphicsData.length; i++) {
        var data = this.graphicsData[i];
        var type = data.type;
        var lineWidth = data.lineWidth;

        points = data.points;

        if(type === PIXI.Graphics.RECT)
        {
            x = points.x - lineWidth/2;
            y = points.y - lineWidth/2;
            var width = points.width + lineWidth;
            var height = points.height + lineWidth;

            minX = x < minX ? x : minX;
            maxX = x + width > maxX ? x + width : maxX;

            minY = y < minY ? x : minY;
            maxY = y + height > maxY ? y + height : maxY;
        }
        else if(type === PIXI.Graphics.CIRC || type === PIXI.Graphics.ELIP)
        {
            x = points.x;
            y = points.y;
            var radius = points.radius + lineWidth/2;

            minX = x - radius < minX ? x - radius : minX;
            maxX = x + radius > maxX ? x + radius : maxX;

            minY = y - radius < minY ? y - radius : minY;
            maxY = y + radius > maxY ? y + radius : maxY;
        }
        else
        {
            // POLY
            for (var j = 0; j < points.length; j+=2)
            {

                x = points[j];
                y = points[j+1];
                minX = x-lineWidth < minX ? x-lineWidth : minX;
                maxX = x+lineWidth > maxX ? x+lineWidth : maxX;

                minY = y-lineWidth < minY ? y-lineWidth : minY;
                maxY = y+lineWidth > maxY ? y+lineWidth : maxY;
            }
        }
    }

    var padding = this.boundsPadding;
    this.bounds = new PIXI.Rectangle(minX - padding, minY - padding, (maxX - minX) + padding * 2, (maxY - minY) + padding * 2);
};

PIXI.Graphics.prototype._generateCachedSprite = function()
{
    var bounds = this.getBounds();

    if(!this._cachedSprite)
    {
        var canvasBuffer = new PIXI.CanvasBuffer(bounds.width, bounds.height);
        var texture = PIXI.Texture.fromCanvas(canvasBuffer.canvas);

        this._cachedSprite = new PIXI.Sprite(texture);
        this._cachedSprite.buffer = canvasBuffer;

        this._cachedSprite.worldTransform = this.worldTransform;
    }
    else
    {
        this._cachedSprite.buffer.resize(bounds.width, bounds.height);
    }

    // leverage the anchor to account for the offest of the element
    this._cachedSprite.anchor.x = -( bounds.x / bounds.width );
    this._cachedSprite.anchor.y = -( bounds.y / bounds.height );

   // this._cachedSprite.buffer.context.save();
    this._cachedSprite.buffer.context.translate(-bounds.x,-bounds.y);

    PIXI.CanvasGraphics.renderGraphics(this, this._cachedSprite.buffer.context);
   // this._cachedSprite.buffer.context.restore();
};

PIXI.Graphics.prototype.destroyCachedSprite = function()
{
    this._cachedSprite.texture.destroy(true);

    // let the gc collect the unused sprite
    // TODO could be object pooled!
    this._cachedSprite = null;
};


// SOME TYPES:
PIXI.Graphics.POLY = 0;
PIXI.Graphics.RECT = 1;
PIXI.Graphics.CIRC = 2;
PIXI.Graphics.ELIP = 3;

/**
 * @author Mat Groves http://matgroves.com/
 */

PIXI.Strip = function(texture, width, height)
{
    PIXI.DisplayObjectContainer.call( this );
    this.texture = texture;
    this.blendMode = PIXI.blendModes.NORMAL;

    try
    {
        this.uvs = new Float32Array([0, 1,
                1, 1,
                1, 0, 0,1]);

        this.verticies = new Float32Array([0, 0,
                          0,0,
                          0,0, 0,
                          0, 0]);

        this.colors = new Float32Array([1, 1, 1, 1]);

        this.indices = new Uint16Array([0, 1, 2, 3]);
    }
    catch(error)
    {
        this.uvs = [0, 1,
                1, 1,
                1, 0, 0,1];

        this.verticies = [0, 0,
                          0,0,
                          0,0, 0,
                          0, 0];

        this.colors = [1, 1, 1, 1];

        this.indices = [0, 1, 2, 3];
    }


    /*
    this.uvs = new Float32Array()
    this.verticies = new Float32Array()
    this.colors = new Float32Array()
    this.indices = new Uint16Array()
    */
    this.width = width;
    this.height = height;

    // load the texture!
    if(texture.baseTexture.hasLoaded)
    {
        this.width   = this.texture.frame.width;
        this.height  = this.texture.frame.height;
        this.updateFrame = true;
    }
    else
    {
        this.onTextureUpdateBind = this.onTextureUpdate.bind(this);
        this.texture.addEventListener( 'update', this.onTextureUpdateBind );
    }

    this.renderable = true;
};

// constructor
PIXI.Strip.prototype = Object.create( PIXI.DisplayObjectContainer.prototype );
PIXI.Strip.prototype.constructor = PIXI.Strip;

PIXI.Strip.prototype.setTexture = function(texture)
{
    //TODO SET THE TEXTURES
    //TODO VISIBILITY

    // stop current texture
    this.texture = texture;
    this.width   = texture.frame.width;
    this.height  = texture.frame.height;
    this.updateFrame = true;
};

PIXI.Strip.prototype.onTextureUpdate = function()
{
    this.updateFrame = true;
};
// some helper functions..

/**
 * @author Mat Groves http://matgroves.com/
 */

PIXI.Rope = function(texture, points)
{
    PIXI.Strip.call( this, texture );
    this.points = points;

    try
    {
        this.verticies = new Float32Array(points.length * 4);
        this.uvs = new Float32Array(points.length * 4);
        this.colors = new Float32Array(points.length * 2);
        this.indices = new Uint16Array(points.length * 2);
    }
    catch(error)
    {
        this.verticies = new Array(points.length * 4);
        this.uvs = new Array(points.length * 4);
        this.colors = new Array(points.length * 2);
        this.indices = new Array(points.length * 2);
    }

    this.refresh();
};


// constructor
PIXI.Rope.prototype = Object.create( PIXI.Strip.prototype );
PIXI.Rope.prototype.constructor = PIXI.Rope;

PIXI.Rope.prototype.refresh = function()
{
    var points = this.points;
    if(points.length < 1) return;

    var uvs = this.uvs;

    var lastPoint = points[0];
    var indices = this.indices;
    var colors = this.colors;

    this.count-=0.2;


    uvs[0] = 0;
    uvs[1] = 1;
    uvs[2] = 0;
    uvs[3] = 1;

    colors[0] = 1;
    colors[1] = 1;

    indices[0] = 0;
    indices[1] = 1;

    var total = points.length,
        point, index, amount;

    for (var i = 1; i < total; i++)
    {

        point = points[i];
        index = i * 4;
        // time to do some smart drawing!
        amount = i / (total-1);

        if(i%2)
        {
            uvs[index] = amount;
            uvs[index+1] = 0;

            uvs[index+2] = amount;
            uvs[index+3] = 1;

        }
        else
        {
            uvs[index] = amount;
            uvs[index+1] = 0;

            uvs[index+2] = amount;
            uvs[index+3] = 1;
        }

        index = i * 2;
        colors[index] = 1;
        colors[index+1] = 1;

        index = i * 2;
        indices[index] = index;
        indices[index + 1] = index + 1;

        lastPoint = point;
    }
};

PIXI.Rope.prototype.updateTransform = function()
{

    var points = this.points;
    if(points.length < 1)return;

    var lastPoint = points[0];
    var nextPoint;
    var perp = {x:0, y:0};

    this.count-=0.2;

    var verticies = this.verticies;
    verticies[0] = lastPoint.x + perp.x;
    verticies[1] = lastPoint.y + perp.y; //+ 200
    verticies[2] = lastPoint.x - perp.x;
    verticies[3] = lastPoint.y - perp.y;//+200
    // time to do some smart drawing!

    var total = points.length,
        point, index, ratio, perpLength, num;

    for (var i = 1; i < total; i++)
    {
        point = points[i];
        index = i * 4;

        if(i < points.length-1)
        {
            nextPoint = points[i+1];
        }
        else
        {
            nextPoint = point;
        }

        perp.y = -(nextPoint.x - lastPoint.x);
        perp.x = nextPoint.y - lastPoint.y;

        ratio = (1 - (i / (total-1))) * 10;

        if(ratio > 1) ratio = 1;

        perpLength = Math.sqrt(perp.x * perp.x + perp.y * perp.y);
        num = this.texture.height / 2; //(20 + Math.abs(Math.sin((i + this.count) * 0.3) * 50) )* ratio;
        perp.x /= perpLength;
        perp.y /= perpLength;

        perp.x *= num;
        perp.y *= num;

        verticies[index] = point.x + perp.x;
        verticies[index+1] = point.y + perp.y;
        verticies[index+2] = point.x - perp.x;
        verticies[index+3] = point.y - perp.y;

        lastPoint = point;
    }

    PIXI.DisplayObjectContainer.prototype.updateTransform.call( this );
};

PIXI.Rope.prototype.setTexture = function(texture)
{
    // stop current texture
    this.texture = texture;
    this.updateFrame = true;
};

/**
 * @author Mat Groves http://matgroves.com/
 */

/**
 * A tiling sprite is a fast way of rendering a tiling image
 *
 * @class TilingSprite
 * @extends DisplayObjectContainer
 * @constructor
 * @param texture {Texture} the texture of the tiling sprite
 * @param width {Number}  the width of the tiling sprite
 * @param height {Number} the height of the tiling sprite
 */
PIXI.TilingSprite = function(texture, width, height)
{
    PIXI.Sprite.call( this, texture);

    this.width = width || 100;
    this.height = height || 100;

    /**
     * The scaling of the image that is being tiled
     *
     * @property tileScale
     * @type Point
     */
    this.tileScale = new PIXI.Point(1,1);


    this.tileScaleOffset = new PIXI.Point(1,1);

    /**
     * The offset position of the image that is being tiled
     *
     * @property tilePosition
     * @type Point
     */
    this.tilePosition = new PIXI.Point(0,0);

    this.renderable = true;

    this.tint = 0xFFFFFF;
    this.blendMode = PIXI.blendModes.NORMAL;
};

// constructor
PIXI.TilingSprite.prototype = Object.create( PIXI.Sprite.prototype );
PIXI.TilingSprite.prototype.constructor = PIXI.TilingSprite;


/**
 * The width of the sprite, setting this will actually modify the scale to acheive the value set
 *
 * @property width
 * @type Number
 */
Object.defineProperty(PIXI.TilingSprite.prototype, 'width', {
    get: function() {
        return this._width;
    },
    set: function(value) {

        this._width = value;
    }
});

/**
 * The height of the TilingSprite, setting this will actually modify the scale to acheive the value set
 *
 * @property height
 * @type Number
 */
Object.defineProperty(PIXI.TilingSprite.prototype, 'height', {
    get: function() {
        return  this._height;
    },
    set: function(value) {
        this._height = value;
    }
});

PIXI.TilingSprite.prototype.onTextureUpdate = function()
{
    // so if _width is 0 then width was not set..
    //console.log("HI MUM")


    this.updateFrame = true;
};

PIXI.TilingSprite.prototype._renderWebGL = function(renderSession)
{

    if(this.visible === false || this.alpha === 0)return;

    var i,j;

    if(this.mask || this.filters)
    {
        if(this.mask)
        {
            renderSession.spriteBatch.stop();
            renderSession.maskManager.pushMask(this.mask, renderSession.projection);
            renderSession.spriteBatch.start();
        }

        if(this.filters)
        {
            renderSession.spriteBatch.flush();
            renderSession.filterManager.pushFilter(this._filterBlock);
        }

        if(!this.tilingTexture)this.generateTilingTexture(true);
        else renderSession.spriteBatch.renderTilingSprite(this);

        // simple render children!
        for(i=0,j=this.children.length; i<j; i++)
        {
            this.children[i]._renderWebGL(renderSession);
        }

        renderSession.spriteBatch.stop();

        if(this.filters)renderSession.filterManager.popFilter();
        if(this.mask)renderSession.maskManager.popMask(renderSession.projection);

        renderSession.spriteBatch.start();
    }
    else
    {
        if(!this.tilingTexture)this.generateTilingTexture(true);
        else renderSession.spriteBatch.renderTilingSprite(this);

        // simple render children!
        for(i=0,j=this.children.length; i<j; i++)
        {
            this.children[i]._renderWebGL(renderSession);
        }
    }
};


PIXI.TilingSprite.prototype._renderCanvas = function(renderSession)
{
    if(this.visible === false || this.alpha === 0)return;

    var context = renderSession.context;

    context.globalAlpha = this.worldAlpha;


    var transform = this.worldTransform;

    // alow for trimming

    context.setTransform(transform[0], transform[3], transform[1], transform[4], transform[2], transform[5]);


    if(!this.__tilePattern)
    {
        this.generateTilingTexture(false);

        if(this.tilingTexture)
        {
            this.__tilePattern = context.createPattern(this.tilingTexture.baseTexture.source, 'repeat');
        }

    }

    // check blend mode
    if(this.blendMode !== renderSession.currentBlendMode)
    {
        renderSession.currentBlendMode = this.blendMode;
        context.globalCompositeOperation = PIXI.blendModesCanvas[renderSession.currentBlendMode];
    }

    context.beginPath();

    var tilePositionX = this.tilePosition.x % this.tilingTexture.width;
    var tilePositionY = this.tilePosition.y % this.tilingTexture.height;

    var tileScale = this.tileScale;
   // console.log(tileScale.x)
    // offset
    context.scale(tileScale.x,tileScale.y);
    context.translate(tilePositionX, tilePositionY);

    context.fillStyle = this.__tilePattern;
    context.fillRect(-tilePositionX,-tilePositionY,this.width / tileScale.x, this.height / tileScale.y);

    context.scale(1/tileScale.x, 1/tileScale.y);
    context.translate(-tilePositionX, -tilePositionY);

    context.closePath();
};

PIXI.TilingSprite.prototype.getBounds = function()
{

    var width = this._width;
    var height = this._height;

    var w0 = width * (1-this.anchor.x);
    var w1 = width * -this.anchor.x;

    var h0 = height * (1-this.anchor.y);
    var h1 = height * -this.anchor.y;

    var worldTransform = this.worldTransform;

    var a = worldTransform[0];
    var b = worldTransform[3];
    var c = worldTransform[1];
    var d = worldTransform[4];
    var tx = worldTransform[2];
    var ty = worldTransform[5];

    var x1 = a * w1 + c * h1 + tx;
    var y1 = d * h1 + b * w1 + ty;

    var x2 = a * w0 + c * h1 + tx;
    var y2 = d * h1 + b * w0 + ty;

    var x3 = a * w0 + c * h0 + tx;
    var y3 = d * h0 + b * w0 + ty;

    var x4 =  a * w1 + c * h0 + tx;
    var y4 =  d * h0 + b * w1 + ty;

    var maxX = -Infinity;
    var maxY = -Infinity;

    var minX = Infinity;
    var minY = Infinity;

    minX = x1 < minX ? x1 : minX;
    minX = x2 < minX ? x2 : minX;
    minX = x3 < minX ? x3 : minX;
    minX = x4 < minX ? x4 : minX;

    minY = y1 < minY ? y1 : minY;
    minY = y2 < minY ? y2 : minY;
    minY = y3 < minY ? y3 : minY;
    minY = y4 < minY ? y4 : minY;

    maxX = x1 > maxX ? x1 : maxX;
    maxX = x2 > maxX ? x2 : maxX;
    maxX = x3 > maxX ? x3 : maxX;
    maxX = x4 > maxX ? x4 : maxX;

    maxY = y1 > maxY ? y1 : maxY;
    maxY = y2 > maxY ? y2 : maxY;
    maxY = y3 > maxY ? y3 : maxY;
    maxY = y4 > maxY ? y4 : maxY;

    var bounds = this._bounds;

    bounds.x = minX;
    bounds.width = maxX - minX;

    bounds.y = minY;
    bounds.height = maxY - minY;

    // store a refferance so that if this function gets called again in the render cycle we do not have to recacalculate
    this._currentBounds = bounds;

    return bounds;
};


PIXI.TilingSprite.prototype.generateTilingTexture = function(forcePowerOfTwo)
{
    var texture = this.texture;

    if(!texture.baseTexture.hasLoaded)return;

    var baseTexture = texture.baseTexture;
    var frame = texture.frame;

    var targetWidth, targetHeight;

    // check that the frame is the same size as the base texture.

    var isFrame = frame.width !== baseTexture.width || frame.height !== baseTexture.height;

    this.tilingTexture = texture;

    var newTextureRequired = false;

    if(!forcePowerOfTwo)
    {
        if(isFrame)
        {
            targetWidth = frame.width;
            targetHeight = frame.height;

            newTextureRequired = true;
        }
    }
    else
    {
        targetWidth = PIXI.getNextPowerOfTwo(texture.frame.width);
        targetHeight = PIXI.getNextPowerOfTwo(texture.frame.height);

        if(frame.width !== targetWidth && frame.height !== targetHeight)newTextureRequired = true;
    }

    if(newTextureRequired)
    {
        var canvasBuffer = new PIXI.CanvasBuffer(targetWidth, targetHeight);

        canvasBuffer.context.drawImage(texture.baseTexture.source,
                                       frame.x,
                                       frame.y,
                                       frame.width,
                                       frame.height,
                                       0,
                                       0,
                                       targetWidth,
                                       targetHeight);

        this.tilingTexture = PIXI.Texture.fromCanvas(canvasBuffer.canvas);

        this.tileScaleOffset.x = frame.width / targetWidth;
        this.tileScaleOffset.y = frame.height / targetHeight;
    }


    this.tilingTexture.baseTexture._powerOf2 = true;
};
/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 * based on pixi impact spine implementation made by Eemeli Kelokorpi (@ekelokorpi) https://github.com/ekelokorpi
 *
 * Awesome JS run time provided by EsotericSoftware
 * https://github.com/EsotericSoftware/spine-runtimes
 *
 */

/*
 * Awesome JS run time provided by EsotericSoftware
 *
 * https://github.com/EsotericSoftware/spine-runtimes
 *
 */

var spine = {};

spine.BoneData = function (name, parent) {
    this.name = name;
    this.parent = parent;
};
spine.BoneData.prototype = {
    length: 0,
    x: 0, y: 0,
    rotation: 0,
    scaleX: 1, scaleY: 1
};

spine.SlotData = function (name, boneData) {
    this.name = name;
    this.boneData = boneData;
};
spine.SlotData.prototype = {
    r: 1, g: 1, b: 1, a: 1,
    attachmentName: null
};

spine.Bone = function (boneData, parent) {
    this.data = boneData;
    this.parent = parent;
    this.setToSetupPose();
};
spine.Bone.yDown = false;
spine.Bone.prototype = {
    x: 0, y: 0,
    rotation: 0,
    scaleX: 1, scaleY: 1,
    m00: 0, m01: 0, worldX: 0, // a b x
    m10: 0, m11: 0, worldY: 0, // c d y
    worldRotation: 0,
    worldScaleX: 1, worldScaleY: 1,
    updateWorldTransform: function (flipX, flipY) {
        var parent = this.parent;
        if (parent != null) {
            this.worldX = this.x * parent.m00 + this.y * parent.m01 + parent.worldX;
            this.worldY = this.x * parent.m10 + this.y * parent.m11 + parent.worldY;
            this.worldScaleX = parent.worldScaleX * this.scaleX;
            this.worldScaleY = parent.worldScaleY * this.scaleY;
            this.worldRotation = parent.worldRotation + this.rotation;
        } else {
            this.worldX = this.x;
            this.worldY = this.y;
            this.worldScaleX = this.scaleX;
            this.worldScaleY = this.scaleY;
            this.worldRotation = this.rotation;
        }
        var radians = this.worldRotation * Math.PI / 180;
        var cos = Math.cos(radians);
        var sin = Math.sin(radians);
        this.m00 = cos * this.worldScaleX;
        this.m10 = sin * this.worldScaleX;
        this.m01 = -sin * this.worldScaleY;
        this.m11 = cos * this.worldScaleY;
        if (flipX) {
            this.m00 = -this.m00;
            this.m01 = -this.m01;
        }
        if (flipY) {
            this.m10 = -this.m10;
            this.m11 = -this.m11;
        }
        if (spine.Bone.yDown) {
            this.m10 = -this.m10;
            this.m11 = -this.m11;
        }
    },
    setToSetupPose: function () {
        var data = this.data;
        this.x = data.x;
        this.y = data.y;
        this.rotation = data.rotation;
        this.scaleX = data.scaleX;
        this.scaleY = data.scaleY;
    }
};

spine.Slot = function (slotData, skeleton, bone) {
    this.data = slotData;
    this.skeleton = skeleton;
    this.bone = bone;
    this.setToSetupPose();
};
spine.Slot.prototype = {
    r: 1, g: 1, b: 1, a: 1,
    _attachmentTime: 0,
    attachment: null,
    setAttachment: function (attachment) {
        this.attachment = attachment;
        this._attachmentTime = this.skeleton.time;
    },
    setAttachmentTime: function (time) {
        this._attachmentTime = this.skeleton.time - time;
    },
    getAttachmentTime: function () {
        return this.skeleton.time - this._attachmentTime;
    },
    setToSetupPose: function () {
        var data = this.data;
        this.r = data.r;
        this.g = data.g;
        this.b = data.b;
        this.a = data.a;

        var slotDatas = this.skeleton.data.slots;
        for (var i = 0, n = slotDatas.length; i < n; i++) {
            if (slotDatas[i] == data) {
                this.setAttachment(!data.attachmentName ? null : this.skeleton.getAttachmentBySlotIndex(i, data.attachmentName));
                break;
            }
        }
    }
};

spine.Skin = function (name) {
    this.name = name;
    this.attachments = {};
};
spine.Skin.prototype = {
    addAttachment: function (slotIndex, name, attachment) {
        this.attachments[slotIndex + ":" + name] = attachment;
    },
    getAttachment: function (slotIndex, name) {
        return this.attachments[slotIndex + ":" + name];
    },
    _attachAll: function (skeleton, oldSkin) {
        for (var key in oldSkin.attachments) {
            var colon = key.indexOf(":");
            var slotIndex = parseInt(key.substring(0, colon), 10);
            var name = key.substring(colon + 1);
            var slot = skeleton.slots[slotIndex];
            if (slot.attachment && slot.attachment.name == name) {
                var attachment = this.getAttachment(slotIndex, name);
                if (attachment) slot.setAttachment(attachment);
            }
        }
    }
};

spine.Animation = function (name, timelines, duration) {
    this.name = name;
    this.timelines = timelines;
    this.duration = duration;
};
spine.Animation.prototype = {
    apply: function (skeleton, time, loop) {
        if (loop && this.duration) time %= this.duration;
        var timelines = this.timelines;
        for (var i = 0, n = timelines.length; i < n; i++)
            timelines[i].apply(skeleton, time, 1);
    },
    mix: function (skeleton, time, loop, alpha) {
        if (loop && this.duration) time %= this.duration;
        var timelines = this.timelines;
        for (var i = 0, n = timelines.length; i < n; i++)
            timelines[i].apply(skeleton, time, alpha);
    }
};

spine.binarySearch = function (values, target, step) {
    var low = 0;
    var high = Math.floor(values.length / step) - 2;
    if (!high) return step;
    var current = high >>> 1;
    while (true) {
        if (values[(current + 1) * step] <= target)
            low = current + 1;
        else
            high = current;
        if (low == high) return (low + 1) * step;
        current = (low + high) >>> 1;
    }
};
spine.linearSearch = function (values, target, step) {
    for (var i = 0, last = values.length - step; i <= last; i += step)
        if (values[i] > target) return i;
    return -1;
};

spine.Curves = function (frameCount) {
    this.curves = []; // dfx, dfy, ddfx, ddfy, dddfx, dddfy, ...
    this.curves.length = (frameCount - 1) * 6;
};
spine.Curves.prototype = {
    setLinear: function (frameIndex) {
        this.curves[frameIndex * 6] = 0/*LINEAR*/;
    },
    setStepped: function (frameIndex) {
        this.curves[frameIndex * 6] = -1/*STEPPED*/;
    },
    /** Sets the control handle positions for an interpolation bezier curve used to transition from this keyframe to the next.
     * cx1 and cx2 are from 0 to 1, representing the percent of time between the two keyframes. cy1 and cy2 are the percent of
     * the difference between the keyframe's values. */
    setCurve: function (frameIndex, cx1, cy1, cx2, cy2) {
        var subdiv_step = 1 / 10/*BEZIER_SEGMENTS*/;
        var subdiv_step2 = subdiv_step * subdiv_step;
        var subdiv_step3 = subdiv_step2 * subdiv_step;
        var pre1 = 3 * subdiv_step;
        var pre2 = 3 * subdiv_step2;
        var pre4 = 6 * subdiv_step2;
        var pre5 = 6 * subdiv_step3;
        var tmp1x = -cx1 * 2 + cx2;
        var tmp1y = -cy1 * 2 + cy2;
        var tmp2x = (cx1 - cx2) * 3 + 1;
        var tmp2y = (cy1 - cy2) * 3 + 1;
        var i = frameIndex * 6;
        var curves = this.curves;
        curves[i] = cx1 * pre1 + tmp1x * pre2 + tmp2x * subdiv_step3;
        curves[i + 1] = cy1 * pre1 + tmp1y * pre2 + tmp2y * subdiv_step3;
        curves[i + 2] = tmp1x * pre4 + tmp2x * pre5;
        curves[i + 3] = tmp1y * pre4 + tmp2y * pre5;
        curves[i + 4] = tmp2x * pre5;
        curves[i + 5] = tmp2y * pre5;
    },
    getCurvePercent: function (frameIndex, percent) {
        percent = percent < 0 ? 0 : (percent > 1 ? 1 : percent);
        var curveIndex = frameIndex * 6;
        var curves = this.curves;
        var dfx = curves[curveIndex];
        if (!dfx/*LINEAR*/) return percent;
        if (dfx == -1/*STEPPED*/) return 0;
        var dfy = curves[curveIndex + 1];
        var ddfx = curves[curveIndex + 2];
        var ddfy = curves[curveIndex + 3];
        var dddfx = curves[curveIndex + 4];
        var dddfy = curves[curveIndex + 5];
        var x = dfx, y = dfy;
        var i = 10/*BEZIER_SEGMENTS*/ - 2;
        while (true) {
            if (x >= percent) {
                var lastX = x - dfx;
                var lastY = y - dfy;
                return lastY + (y - lastY) * (percent - lastX) / (x - lastX);
            }
            if (!i) break;
            i--;
            dfx += ddfx;
            dfy += ddfy;
            ddfx += dddfx;
            ddfy += dddfy;
            x += dfx;
            y += dfy;
        }
        return y + (1 - y) * (percent - x) / (1 - x); // Last point is 1,1.
    }
};

spine.RotateTimeline = function (frameCount) {
    this.curves = new spine.Curves(frameCount);
    this.frames = []; // time, angle, ...
    this.frames.length = frameCount * 2;
};
spine.RotateTimeline.prototype = {
    boneIndex: 0,
    getFrameCount: function () {
        return this.frames.length / 2;
    },
    setFrame: function (frameIndex, time, angle) {
        frameIndex *= 2;
        this.frames[frameIndex] = time;
        this.frames[frameIndex + 1] = angle;
    },
    apply: function (skeleton, time, alpha) {
        var frames = this.frames,
            amount;

        if (time < frames[0]) return; // Time is before first frame.

        var bone = skeleton.bones[this.boneIndex];

        if (time >= frames[frames.length - 2]) { // Time is after last frame.
            amount = bone.data.rotation + frames[frames.length - 1] - bone.rotation;
            while (amount > 180)
                amount -= 360;
            while (amount < -180)
                amount += 360;
            bone.rotation += amount * alpha;
            return;
        }

        // Interpolate between the last frame and the current frame.
        var frameIndex = spine.binarySearch(frames, time, 2);
        var lastFrameValue = frames[frameIndex - 1];
        var frameTime = frames[frameIndex];
        var percent = 1 - (time - frameTime) / (frames[frameIndex - 2/*LAST_FRAME_TIME*/] - frameTime);
        percent = this.curves.getCurvePercent(frameIndex / 2 - 1, percent);

        amount = frames[frameIndex + 1/*FRAME_VALUE*/] - lastFrameValue;
        while (amount > 180)
            amount -= 360;
        while (amount < -180)
            amount += 360;
        amount = bone.data.rotation + (lastFrameValue + amount * percent) - bone.rotation;
        while (amount > 180)
            amount -= 360;
        while (amount < -180)
            amount += 360;
        bone.rotation += amount * alpha;
    }
};

spine.TranslateTimeline = function (frameCount) {
    this.curves = new spine.Curves(frameCount);
    this.frames = []; // time, x, y, ...
    this.frames.length = frameCount * 3;
};
spine.TranslateTimeline.prototype = {
    boneIndex: 0,
    getFrameCount: function () {
        return this.frames.length / 3;
    },
    setFrame: function (frameIndex, time, x, y) {
        frameIndex *= 3;
        this.frames[frameIndex] = time;
        this.frames[frameIndex + 1] = x;
        this.frames[frameIndex + 2] = y;
    },
    apply: function (skeleton, time, alpha) {
        var frames = this.frames;
        if (time < frames[0]) return; // Time is before first frame.

        var bone = skeleton.bones[this.boneIndex];

        if (time >= frames[frames.length - 3]) { // Time is after last frame.
            bone.x += (bone.data.x + frames[frames.length - 2] - bone.x) * alpha;
            bone.y += (bone.data.y + frames[frames.length - 1] - bone.y) * alpha;
            return;
        }

        // Interpolate between the last frame and the current frame.
        var frameIndex = spine.binarySearch(frames, time, 3);
        var lastFrameX = frames[frameIndex - 2];
        var lastFrameY = frames[frameIndex - 1];
        var frameTime = frames[frameIndex];
        var percent = 1 - (time - frameTime) / (frames[frameIndex + -3/*LAST_FRAME_TIME*/] - frameTime);
        percent = this.curves.getCurvePercent(frameIndex / 3 - 1, percent);

        bone.x += (bone.data.x + lastFrameX + (frames[frameIndex + 1/*FRAME_X*/] - lastFrameX) * percent - bone.x) * alpha;
        bone.y += (bone.data.y + lastFrameY + (frames[frameIndex + 2/*FRAME_Y*/] - lastFrameY) * percent - bone.y) * alpha;
    }
};

spine.ScaleTimeline = function (frameCount) {
    this.curves = new spine.Curves(frameCount);
    this.frames = []; // time, x, y, ...
    this.frames.length = frameCount * 3;
};
spine.ScaleTimeline.prototype = {
    boneIndex: 0,
    getFrameCount: function () {
        return this.frames.length / 3;
    },
    setFrame: function (frameIndex, time, x, y) {
        frameIndex *= 3;
        this.frames[frameIndex] = time;
        this.frames[frameIndex + 1] = x;
        this.frames[frameIndex + 2] = y;
    },
    apply: function (skeleton, time, alpha) {
        var frames = this.frames;
        if (time < frames[0]) return; // Time is before first frame.

        var bone = skeleton.bones[this.boneIndex];

        if (time >= frames[frames.length - 3]) { // Time is after last frame.
            bone.scaleX += (bone.data.scaleX - 1 + frames[frames.length - 2] - bone.scaleX) * alpha;
            bone.scaleY += (bone.data.scaleY - 1 + frames[frames.length - 1] - bone.scaleY) * alpha;
            return;
        }

        // Interpolate between the last frame and the current frame.
        var frameIndex = spine.binarySearch(frames, time, 3);
        var lastFrameX = frames[frameIndex - 2];
        var lastFrameY = frames[frameIndex - 1];
        var frameTime = frames[frameIndex];
        var percent = 1 - (time - frameTime) / (frames[frameIndex + -3/*LAST_FRAME_TIME*/] - frameTime);
        percent = this.curves.getCurvePercent(frameIndex / 3 - 1, percent);

        bone.scaleX += (bone.data.scaleX - 1 + lastFrameX + (frames[frameIndex + 1/*FRAME_X*/] - lastFrameX) * percent - bone.scaleX) * alpha;
        bone.scaleY += (bone.data.scaleY - 1 + lastFrameY + (frames[frameIndex + 2/*FRAME_Y*/] - lastFrameY) * percent - bone.scaleY) * alpha;
    }
};

spine.ColorTimeline = function (frameCount) {
    this.curves = new spine.Curves(frameCount);
    this.frames = []; // time, r, g, b, a, ...
    this.frames.length = frameCount * 5;
};
spine.ColorTimeline.prototype = {
    slotIndex: 0,
    getFrameCount: function () {
        return this.frames.length / 2;
    },
    setFrame: function (frameIndex, time, x, y) {
        frameIndex *= 5;
        this.frames[frameIndex] = time;
        this.frames[frameIndex + 1] = r;
        this.frames[frameIndex + 2] = g;
        this.frames[frameIndex + 3] = b;
        this.frames[frameIndex + 4] = a;
    },
    apply: function (skeleton, time, alpha) {
        var frames = this.frames;
        if (time < frames[0]) return; // Time is before first frame.

        var slot = skeleton.slots[this.slotIndex];

        if (time >= frames[frames.length - 5]) { // Time is after last frame.
            var i = frames.length - 1;
            slot.r = frames[i - 3];
            slot.g = frames[i - 2];
            slot.b = frames[i - 1];
            slot.a = frames[i];
            return;
        }

        // Interpolate between the last frame and the current frame.
        var frameIndex = spine.binarySearch(frames, time, 5);
        var lastFrameR = frames[frameIndex - 4];
        var lastFrameG = frames[frameIndex - 3];
        var lastFrameB = frames[frameIndex - 2];
        var lastFrameA = frames[frameIndex - 1];
        var frameTime = frames[frameIndex];
        var percent = 1 - (time - frameTime) / (frames[frameIndex - 5/*LAST_FRAME_TIME*/] - frameTime);
        percent = this.curves.getCurvePercent(frameIndex / 5 - 1, percent);

        var r = lastFrameR + (frames[frameIndex + 1/*FRAME_R*/] - lastFrameR) * percent;
        var g = lastFrameG + (frames[frameIndex + 2/*FRAME_G*/] - lastFrameG) * percent;
        var b = lastFrameB + (frames[frameIndex + 3/*FRAME_B*/] - lastFrameB) * percent;
        var a = lastFrameA + (frames[frameIndex + 4/*FRAME_A*/] - lastFrameA) * percent;
        if (alpha < 1) {
            slot.r += (r - slot.r) * alpha;
            slot.g += (g - slot.g) * alpha;
            slot.b += (b - slot.b) * alpha;
            slot.a += (a - slot.a) * alpha;
        } else {
            slot.r = r;
            slot.g = g;
            slot.b = b;
            slot.a = a;
        }
    }
};

spine.AttachmentTimeline = function (frameCount) {
    this.curves = new spine.Curves(frameCount);
    this.frames = []; // time, ...
    this.frames.length = frameCount;
    this.attachmentNames = []; // time, ...
    this.attachmentNames.length = frameCount;
};
spine.AttachmentTimeline.prototype = {
    slotIndex: 0,
    getFrameCount: function () {
            return this.frames.length;
    },
    setFrame: function (frameIndex, time, attachmentName) {
        this.frames[frameIndex] = time;
        this.attachmentNames[frameIndex] = attachmentName;
    },
    apply: function (skeleton, time, alpha) {
        var frames = this.frames;
        if (time < frames[0]) return; // Time is before first frame.

        var frameIndex;
        if (time >= frames[frames.length - 1]) // Time is after last frame.
            frameIndex = frames.length - 1;
        else
            frameIndex = spine.binarySearch(frames, time, 1) - 1;

        var attachmentName = this.attachmentNames[frameIndex];
        skeleton.slots[this.slotIndex].setAttachment(!attachmentName ? null : skeleton.getAttachmentBySlotIndex(this.slotIndex, attachmentName));
    }
};

spine.SkeletonData = function () {
    this.bones = [];
    this.slots = [];
    this.skins = [];
    this.animations = [];
};
spine.SkeletonData.prototype = {
    defaultSkin: null,
    /** @return May be null. */
    findBone: function (boneName) {
        var bones = this.bones;
        for (var i = 0, n = bones.length; i < n; i++)
            if (bones[i].name == boneName) return bones[i];
        return null;
    },
    /** @return -1 if the bone was not found. */
    findBoneIndex: function (boneName) {
        var bones = this.bones;
        for (var i = 0, n = bones.length; i < n; i++)
            if (bones[i].name == boneName) return i;
        return -1;
    },
    /** @return May be null. */
    findSlot: function (slotName) {
        var slots = this.slots;
        for (var i = 0, n = slots.length; i < n; i++) {
            if (slots[i].name == slotName) return slot[i];
        }
        return null;
    },
    /** @return -1 if the bone was not found. */
    findSlotIndex: function (slotName) {
        var slots = this.slots;
        for (var i = 0, n = slots.length; i < n; i++)
            if (slots[i].name == slotName) return i;
        return -1;
    },
    /** @return May be null. */
    findSkin: function (skinName) {
        var skins = this.skins;
        for (var i = 0, n = skins.length; i < n; i++)
            if (skins[i].name == skinName) return skins[i];
        return null;
    },
    /** @return May be null. */
    findAnimation: function (animationName) {
        var animations = this.animations;
        for (var i = 0, n = animations.length; i < n; i++)
            if (animations[i].name == animationName) return animations[i];
        return null;
    }
};

spine.Skeleton = function (skeletonData) {
    this.data = skeletonData;

    this.bones = [];
    for (var i = 0, n = skeletonData.bones.length; i < n; i++) {
        var boneData = skeletonData.bones[i];
        var parent = !boneData.parent ? null : this.bones[skeletonData.bones.indexOf(boneData.parent)];
        this.bones.push(new spine.Bone(boneData, parent));
    }

    this.slots = [];
    this.drawOrder = [];
    for (i = 0, n = skeletonData.slots.length; i < n; i++) {
        var slotData = skeletonData.slots[i];
        var bone = this.bones[skeletonData.bones.indexOf(slotData.boneData)];
        var slot = new spine.Slot(slotData, this, bone);
        this.slots.push(slot);
        this.drawOrder.push(slot);
    }
};
spine.Skeleton.prototype = {
    x: 0, y: 0,
    skin: null,
    r: 1, g: 1, b: 1, a: 1,
    time: 0,
    flipX: false, flipY: false,
    /** Updates the world transform for each bone. */
    updateWorldTransform: function () {
        var flipX = this.flipX;
        var flipY = this.flipY;
        var bones = this.bones;
        for (var i = 0, n = bones.length; i < n; i++)
            bones[i].updateWorldTransform(flipX, flipY);
    },
    /** Sets the bones and slots to their setup pose values. */
    setToSetupPose: function () {
        this.setBonesToSetupPose();
        this.setSlotsToSetupPose();
    },
    setBonesToSetupPose: function () {
        var bones = this.bones;
        for (var i = 0, n = bones.length; i < n; i++)
            bones[i].setToSetupPose();
    },
    setSlotsToSetupPose: function () {
        var slots = this.slots;
        for (var i = 0, n = slots.length; i < n; i++)
            slots[i].setToSetupPose(i);
    },
    /** @return May return null. */
    getRootBone: function () {
        return this.bones.length ? this.bones[0] : null;
    },
    /** @return May be null. */
    findBone: function (boneName) {
        var bones = this.bones;
        for (var i = 0, n = bones.length; i < n; i++)
            if (bones[i].data.name == boneName) return bones[i];
        return null;
    },
    /** @return -1 if the bone was not found. */
    findBoneIndex: function (boneName) {
        var bones = this.bones;
        for (var i = 0, n = bones.length; i < n; i++)
            if (bones[i].data.name == boneName) return i;
        return -1;
    },
    /** @return May be null. */
    findSlot: function (slotName) {
        var slots = this.slots;
        for (var i = 0, n = slots.length; i < n; i++)
            if (slots[i].data.name == slotName) return slots[i];
        return null;
    },
    /** @return -1 if the bone was not found. */
    findSlotIndex: function (slotName) {
        var slots = this.slots;
        for (var i = 0, n = slots.length; i < n; i++)
            if (slots[i].data.name == slotName) return i;
        return -1;
    },
    setSkinByName: function (skinName) {
        var skin = this.data.findSkin(skinName);
        if (!skin) throw "Skin not found: " + skinName;
        this.setSkin(skin);
    },
    /** Sets the skin used to look up attachments not found in the {@link SkeletonData#getDefaultSkin() default skin}. Attachments
     * from the new skin are attached if the corresponding attachment from the old skin was attached.
     * @param newSkin May be null. */
    setSkin: function (newSkin) {
        if (this.skin && newSkin) newSkin._attachAll(this, this.skin);
        this.skin = newSkin;
    },
    /** @return May be null. */
    getAttachmentBySlotName: function (slotName, attachmentName) {
        return this.getAttachmentBySlotIndex(this.data.findSlotIndex(slotName), attachmentName);
    },
    /** @return May be null. */
    getAttachmentBySlotIndex: function (slotIndex, attachmentName) {
        if (this.skin) {
            var attachment = this.skin.getAttachment(slotIndex, attachmentName);
            if (attachment) return attachment;
        }
        if (this.data.defaultSkin) return this.data.defaultSkin.getAttachment(slotIndex, attachmentName);
        return null;
    },
    /** @param attachmentName May be null. */
    setAttachment: function (slotName, attachmentName) {
        var slots = this.slots;
        for (var i = 0, n = slots.size; i < n; i++) {
            var slot = slots[i];
            if (slot.data.name == slotName) {
                var attachment = null;
                if (attachmentName) {
                    attachment = this.getAttachment(i, attachmentName);
                    if (attachment == null) throw "Attachment not found: " + attachmentName + ", for slot: " + slotName;
                }
                slot.setAttachment(attachment);
                return;
            }
        }
        throw "Slot not found: " + slotName;
    },
    update: function (delta) {
        time += delta;
    }
};

spine.AttachmentType = {
    region: 0
};

spine.RegionAttachment = function () {
    this.offset = [];
    this.offset.length = 8;
    this.uvs = [];
    this.uvs.length = 8;
};
spine.RegionAttachment.prototype = {
    x: 0, y: 0,
    rotation: 0,
    scaleX: 1, scaleY: 1,
    width: 0, height: 0,
    rendererObject: null,
    regionOffsetX: 0, regionOffsetY: 0,
    regionWidth: 0, regionHeight: 0,
    regionOriginalWidth: 0, regionOriginalHeight: 0,
    setUVs: function (u, v, u2, v2, rotate) {
        var uvs = this.uvs;
        if (rotate) {
            uvs[2/*X2*/] = u;
            uvs[3/*Y2*/] = v2;
            uvs[4/*X3*/] = u;
            uvs[5/*Y3*/] = v;
            uvs[6/*X4*/] = u2;
            uvs[7/*Y4*/] = v;
            uvs[0/*X1*/] = u2;
            uvs[1/*Y1*/] = v2;
        } else {
            uvs[0/*X1*/] = u;
            uvs[1/*Y1*/] = v2;
            uvs[2/*X2*/] = u;
            uvs[3/*Y2*/] = v;
            uvs[4/*X3*/] = u2;
            uvs[5/*Y3*/] = v;
            uvs[6/*X4*/] = u2;
            uvs[7/*Y4*/] = v2;
        }
    },
    updateOffset: function () {
        var regionScaleX = this.width / this.regionOriginalWidth * this.scaleX;
        var regionScaleY = this.height / this.regionOriginalHeight * this.scaleY;
        var localX = -this.width / 2 * this.scaleX + this.regionOffsetX * regionScaleX;
        var localY = -this.height / 2 * this.scaleY + this.regionOffsetY * regionScaleY;
        var localX2 = localX + this.regionWidth * regionScaleX;
        var localY2 = localY + this.regionHeight * regionScaleY;
        var radians = this.rotation * Math.PI / 180;
        var cos = Math.cos(radians);
        var sin = Math.sin(radians);
        var localXCos = localX * cos + this.x;
        var localXSin = localX * sin;
        var localYCos = localY * cos + this.y;
        var localYSin = localY * sin;
        var localX2Cos = localX2 * cos + this.x;
        var localX2Sin = localX2 * sin;
        var localY2Cos = localY2 * cos + this.y;
        var localY2Sin = localY2 * sin;
        var offset = this.offset;
        offset[0/*X1*/] = localXCos - localYSin;
        offset[1/*Y1*/] = localYCos + localXSin;
        offset[2/*X2*/] = localXCos - localY2Sin;
        offset[3/*Y2*/] = localY2Cos + localXSin;
        offset[4/*X3*/] = localX2Cos - localY2Sin;
        offset[5/*Y3*/] = localY2Cos + localX2Sin;
        offset[6/*X4*/] = localX2Cos - localYSin;
        offset[7/*Y4*/] = localYCos + localX2Sin;
    },
    computeVertices: function (x, y, bone, vertices) {
        x += bone.worldX;
        y += bone.worldY;
        var m00 = bone.m00;
        var m01 = bone.m01;
        var m10 = bone.m10;
        var m11 = bone.m11;
        var offset = this.offset;
        vertices[0/*X1*/] = offset[0/*X1*/] * m00 + offset[1/*Y1*/] * m01 + x;
        vertices[1/*Y1*/] = offset[0/*X1*/] * m10 + offset[1/*Y1*/] * m11 + y;
        vertices[2/*X2*/] = offset[2/*X2*/] * m00 + offset[3/*Y2*/] * m01 + x;
        vertices[3/*Y2*/] = offset[2/*X2*/] * m10 + offset[3/*Y2*/] * m11 + y;
        vertices[4/*X3*/] = offset[4/*X3*/] * m00 + offset[5/*X3*/] * m01 + x;
        vertices[5/*X3*/] = offset[4/*X3*/] * m10 + offset[5/*X3*/] * m11 + y;
        vertices[6/*X4*/] = offset[6/*X4*/] * m00 + offset[7/*Y4*/] * m01 + x;
        vertices[7/*Y4*/] = offset[6/*X4*/] * m10 + offset[7/*Y4*/] * m11 + y;
    }
}

spine.AnimationStateData = function (skeletonData) {
    this.skeletonData = skeletonData;
    this.animationToMixTime = {};
};
spine.AnimationStateData.prototype = {
        defaultMix: 0,
    setMixByName: function (fromName, toName, duration) {
        var from = this.skeletonData.findAnimation(fromName);
        if (!from) throw "Animation not found: " + fromName;
        var to = this.skeletonData.findAnimation(toName);
        if (!to) throw "Animation not found: " + toName;
        this.setMix(from, to, duration);
    },
    setMix: function (from, to, duration) {
        this.animationToMixTime[from.name + ":" + to.name] = duration;
    },
    getMix: function (from, to) {
        var time = this.animationToMixTime[from.name + ":" + to.name];
            return time ? time : this.defaultMix;
    }
};

spine.AnimationState = function (stateData) {
    this.data = stateData;
    this.queue = [];
};
spine.AnimationState.prototype = {
    current: null,
    previous: null,
    currentTime: 0,
    previousTime: 0,
    currentLoop: false,
    previousLoop: false,
    mixTime: 0,
    mixDuration: 0,
    update: function (delta) {
        this.currentTime += delta;
        this.previousTime += delta;
        this.mixTime += delta;

        if (this.queue.length > 0) {
            var entry = this.queue[0];
            if (this.currentTime >= entry.delay) {
                this._setAnimation(entry.animation, entry.loop);
                this.queue.shift();
            }
        }
    },
    apply: function (skeleton) {
        if (!this.current) return;
        if (this.previous) {
            this.previous.apply(skeleton, this.previousTime, this.previousLoop);
            var alpha = this.mixTime / this.mixDuration;
            if (alpha >= 1) {
                alpha = 1;
                this.previous = null;
            }
            this.current.mix(skeleton, this.currentTime, this.currentLoop, alpha);
        } else
            this.current.apply(skeleton, this.currentTime, this.currentLoop);
    },
    clearAnimation: function () {
        this.previous = null;
        this.current = null;
        this.queue.length = 0;
    },
    _setAnimation: function (animation, loop) {
        this.previous = null;
        if (animation && this.current) {
            this.mixDuration = this.data.getMix(this.current, animation);
            if (this.mixDuration > 0) {
                this.mixTime = 0;
                this.previous = this.current;
                this.previousTime = this.currentTime;
                this.previousLoop = this.currentLoop;
            }
        }
        this.current = animation;
        this.currentLoop = loop;
        this.currentTime = 0;
    },
    /** @see #setAnimation(Animation, Boolean) */
    setAnimationByName: function (animationName, loop) {
        var animation = this.data.skeletonData.findAnimation(animationName);
        if (!animation) throw "Animation not found: " + animationName;
        this.setAnimation(animation, loop);
    },
    /** Set the current animation. Any queued animations are cleared and the current animation time is set to 0.
     * @param animation May be null. */
    setAnimation: function (animation, loop) {
        this.queue.length = 0;
        this._setAnimation(animation, loop);
    },
    /** @see #addAnimation(Animation, Boolean, Number) */
    addAnimationByName: function (animationName, loop, delay) {
        var animation = this.data.skeletonData.findAnimation(animationName);
        if (!animation) throw "Animation not found: " + animationName;
        this.addAnimation(animation, loop, delay);
    },
    /** Adds an animation to be played delay seconds after the current or last queued animation.
     * @param delay May be <= 0 to use duration of previous animation minus any mix duration plus the negative delay. */
    addAnimation: function (animation, loop, delay) {
        var entry = {};
        entry.animation = animation;
        entry.loop = loop;

        if (!delay || delay <= 0) {
            var previousAnimation = this.queue.length ? this.queue[this.queue.length - 1].animation : this.current;
            if (previousAnimation != null)
                delay = previousAnimation.duration - this.data.getMix(previousAnimation, animation) + (delay || 0);
            else
                delay = 0;
        }
        entry.delay = delay;

        this.queue.push(entry);
    },
    /** Returns true if no animation is set or if the current time is greater than the animation duration, regardless of looping. */
    isComplete: function () {
        return !this.current || this.currentTime >= this.current.duration;
    }
};

spine.SkeletonJson = function (attachmentLoader) {
    this.attachmentLoader = attachmentLoader;
};
spine.SkeletonJson.prototype = {
    scale: 1,
    readSkeletonData: function (root) {
        /*jshint -W069*/
        var skeletonData = new spine.SkeletonData(),
            boneData;

        // Bones.
        var bones = root["bones"];
        for (var i = 0, n = bones.length; i < n; i++) {
            var boneMap = bones[i];
            var parent = null;
            if (boneMap["parent"]) {
                parent = skeletonData.findBone(boneMap["parent"]);
                if (!parent) throw "Parent bone not found: " + boneMap["parent"];
            }
            boneData = new spine.BoneData(boneMap["name"], parent);
            boneData.length = (boneMap["length"] || 0) * this.scale;
            boneData.x = (boneMap["x"] || 0) * this.scale;
            boneData.y = (boneMap["y"] || 0) * this.scale;
            boneData.rotation = (boneMap["rotation"] || 0);
            boneData.scaleX = boneMap["scaleX"] || 1;
            boneData.scaleY = boneMap["scaleY"] || 1;
            skeletonData.bones.push(boneData);
        }

        // Slots.
        var slots = root["slots"];
        for (i = 0, n = slots.length; i < n; i++) {
            var slotMap = slots[i];
            boneData = skeletonData.findBone(slotMap["bone"]);
            if (!boneData) throw "Slot bone not found: " + slotMap["bone"];
            var slotData = new spine.SlotData(slotMap["name"], boneData);

            var color = slotMap["color"];
            if (color) {
                slotData.r = spine.SkeletonJson.toColor(color, 0);
                slotData.g = spine.SkeletonJson.toColor(color, 1);
                slotData.b = spine.SkeletonJson.toColor(color, 2);
                slotData.a = spine.SkeletonJson.toColor(color, 3);
            }

            slotData.attachmentName = slotMap["attachment"];

            skeletonData.slots.push(slotData);
        }

        // Skins.
        var skins = root["skins"];
        for (var skinName in skins) {
            if (!skins.hasOwnProperty(skinName)) continue;
            var skinMap = skins[skinName];
            var skin = new spine.Skin(skinName);
            for (var slotName in skinMap) {
                if (!skinMap.hasOwnProperty(slotName)) continue;
                var slotIndex = skeletonData.findSlotIndex(slotName);
                var slotEntry = skinMap[slotName];
                for (var attachmentName in slotEntry) {
                    if (!slotEntry.hasOwnProperty(attachmentName)) continue;
                    var attachment = this.readAttachment(skin, attachmentName, slotEntry[attachmentName]);
                    if (attachment != null) skin.addAttachment(slotIndex, attachmentName, attachment);
                }
            }
            skeletonData.skins.push(skin);
            if (skin.name == "default") skeletonData.defaultSkin = skin;
        }

        // Animations.
        var animations = root["animations"];
        for (var animationName in animations) {
            if (!animations.hasOwnProperty(animationName)) continue;
            this.readAnimation(animationName, animations[animationName], skeletonData);
        }

        return skeletonData;
    },
    readAttachment: function (skin, name, map) {
        /*jshint -W069*/
        name = map["name"] || name;

        var type = spine.AttachmentType[map["type"] || "region"];

        if (type == spine.AttachmentType.region) {
            var attachment = new spine.RegionAttachment();
            attachment.x = (map["x"] || 0) * this.scale;
            attachment.y = (map["y"] || 0) * this.scale;
            attachment.scaleX = map["scaleX"] || 1;
            attachment.scaleY = map["scaleY"] || 1;
            attachment.rotation = map["rotation"] || 0;
            attachment.width = (map["width"] || 32) * this.scale;
            attachment.height = (map["height"] || 32) * this.scale;
            attachment.updateOffset();

            attachment.rendererObject = {};
            attachment.rendererObject.name = name;
            attachment.rendererObject.scale = {};
            attachment.rendererObject.scale.x = attachment.scaleX;
            attachment.rendererObject.scale.y = attachment.scaleY;
            attachment.rendererObject.rotation = -attachment.rotation * Math.PI / 180;
            return attachment;
        }

            throw "Unknown attachment type: " + type;
    },

    readAnimation: function (name, map, skeletonData) {
        /*jshint -W069*/
        var timelines = [];
        var duration = 0;
        var frameIndex, timeline, timelineName, valueMap, values,
            i, n;

        var bones = map["bones"];
        for (var boneName in bones) {
            if (!bones.hasOwnProperty(boneName)) continue;
            var boneIndex = skeletonData.findBoneIndex(boneName);
            if (boneIndex == -1) throw "Bone not found: " + boneName;
            var boneMap = bones[boneName];

            for (timelineName in boneMap) {
                if (!boneMap.hasOwnProperty(timelineName)) continue;
                values = boneMap[timelineName];
                if (timelineName == "rotate") {
                    timeline = new spine.RotateTimeline(values.length);
                    timeline.boneIndex = boneIndex;

                    frameIndex = 0;
                    for (i = 0, n = values.length; i < n; i++) {
                        valueMap = values[i];
                        timeline.setFrame(frameIndex, valueMap["time"], valueMap["angle"]);
                        spine.SkeletonJson.readCurve(timeline, frameIndex, valueMap);
                        frameIndex++;
                    }
                    timelines.push(timeline);
                    duration = Math.max(duration, timeline.frames[timeline.getFrameCount() * 2 - 2]);

                } else if (timelineName == "translate" || timelineName == "scale") {
                    var timelineScale = 1;
                    if (timelineName == "scale")
                        timeline = new spine.ScaleTimeline(values.length);
                    else {
                        timeline = new spine.TranslateTimeline(values.length);
                        timelineScale = this.scale;
                    }
                    timeline.boneIndex = boneIndex;

                    frameIndex = 0;
                    for (i = 0, n = values.length; i < n; i++) {
                        valueMap = values[i];
                        var x = (valueMap["x"] || 0) * timelineScale;
                        var y = (valueMap["y"] || 0) * timelineScale;
                        timeline.setFrame(frameIndex, valueMap["time"], x, y);
                        spine.SkeletonJson.readCurve(timeline, frameIndex, valueMap);
                        frameIndex++;
                    }
                    timelines.push(timeline);
                    duration = Math.max(duration, timeline.frames[timeline.getFrameCount() * 3 - 3]);

                } else
                    throw "Invalid timeline type for a bone: " + timelineName + " (" + boneName + ")";
            }
        }
        var slots = map["slots"];
        for (var slotName in slots) {
            if (!slots.hasOwnProperty(slotName)) continue;
            var slotMap = slots[slotName];
            var slotIndex = skeletonData.findSlotIndex(slotName);

            for (timelineName in slotMap) {
                if (!slotMap.hasOwnProperty(timelineName)) continue;
                values = slotMap[timelineName];
                if (timelineName == "color") {
                    timeline = new spine.ColorTimeline(values.length);
                    timeline.slotIndex = slotIndex;

                    frameIndex = 0;
                    for (i = 0, n = values.length; i < n; i++) {
                        valueMap = values[i];
                        var color = valueMap["color"];
                        var r = spine.SkeletonJson.toColor(color, 0);
                        var g = spine.SkeletonJson.toColor(color, 1);
                        var b = spine.SkeletonJson.toColor(color, 2);
                        var a = spine.SkeletonJson.toColor(color, 3);
                        timeline.setFrame(frameIndex, valueMap["time"], r, g, b, a);
                        spine.SkeletonJson.readCurve(timeline, frameIndex, valueMap);
                        frameIndex++;
                    }
                    timelines.push(timeline);
                    duration = Math.max(duration, timeline.frames[timeline.getFrameCount() * 5 - 5]);

                } else if (timelineName == "attachment") {
                    timeline = new spine.AttachmentTimeline(values.length);
                    timeline.slotIndex = slotIndex;

                    frameIndex = 0;
                    for (i = 0, n = values.length; i < n; i++) {
                        valueMap = values[i];
                        timeline.setFrame(frameIndex++, valueMap["time"], valueMap["name"]);
                    }
                    timelines.push(timeline);
                        duration = Math.max(duration, timeline.frames[timeline.getFrameCount() - 1]);

                } else
                    throw "Invalid timeline type for a slot: " + timelineName + " (" + slotName + ")";
            }
        }
        skeletonData.animations.push(new spine.Animation(name, timelines, duration));
    }
};
spine.SkeletonJson.readCurve = function (timeline, frameIndex, valueMap) {
    /*jshint -W069*/
    var curve = valueMap["curve"];
    if (!curve) return;
    if (curve == "stepped")
        timeline.curves.setStepped(frameIndex);
    else if (curve instanceof Array)
        timeline.curves.setCurve(frameIndex, curve[0], curve[1], curve[2], curve[3]);
};
spine.SkeletonJson.toColor = function (hexString, colorIndex) {
    if (hexString.length != 8) throw "Color hexidecimal length must be 8, recieved: " + hexString;
    return parseInt(hexString.substring(colorIndex * 2, 2), 16) / 255;
};

spine.Atlas = function (atlasText, textureLoader) {
    this.textureLoader = textureLoader;
    this.pages = [];
    this.regions = [];

    var reader = new spine.AtlasReader(atlasText);
    var tuple = [];
    tuple.length = 4;
    var page = null;
    while (true) {
        var line = reader.readLine();
        if (line == null) break;
        line = reader.trim(line);
        if (!line.length)
            page = null;
        else if (!page) {
            page = new spine.AtlasPage();
            page.name = line;

            page.format = spine.Atlas.Format[reader.readValue()];

            reader.readTuple(tuple);
            page.minFilter = spine.Atlas.TextureFilter[tuple[0]];
            page.magFilter = spine.Atlas.TextureFilter[tuple[1]];

            var direction = reader.readValue();
            page.uWrap = spine.Atlas.TextureWrap.clampToEdge;
            page.vWrap = spine.Atlas.TextureWrap.clampToEdge;
            if (direction == "x")
                page.uWrap = spine.Atlas.TextureWrap.repeat;
            else if (direction == "y")
                page.vWrap = spine.Atlas.TextureWrap.repeat;
            else if (direction == "xy")
                page.uWrap = page.vWrap = spine.Atlas.TextureWrap.repeat;

            textureLoader.load(page, line);

            this.pages.push(page);

        } else {
            var region = new spine.AtlasRegion();
            region.name = line;
            region.page = page;

            region.rotate = reader.readValue() == "true";

            reader.readTuple(tuple);
            var x = parseInt(tuple[0], 10);
            var y = parseInt(tuple[1], 10);

            reader.readTuple(tuple);
            var width = parseInt(tuple[0], 10);
            var height = parseInt(tuple[1], 10);

            region.u = x / page.width;
            region.v = y / page.height;
            if (region.rotate) {
                region.u2 = (x + height) / page.width;
                region.v2 = (y + width) / page.height;
            } else {
                region.u2 = (x + width) / page.width;
                region.v2 = (y + height) / page.height;
            }
            region.x = x;
            region.y = y;
            region.width = Math.abs(width);
            region.height = Math.abs(height);

            if (reader.readTuple(tuple) == 4) { // split is optional
                region.splits = [parseInt(tuple[0], 10), parseInt(tuple[1], 10), parseInt(tuple[2], 10), parseInt(tuple[3], 10)];

                if (reader.readTuple(tuple) == 4) { // pad is optional, but only present with splits
                    region.pads = [parseInt(tuple[0], 10), parseInt(tuple[1], 10), parseInt(tuple[2], 10), parseInt(tuple[3], 10)];

                    reader.readTuple(tuple);
                }
            }

            region.originalWidth = parseInt(tuple[0], 10);
            region.originalHeight = parseInt(tuple[1], 10);

            reader.readTuple(tuple);
            region.offsetX = parseInt(tuple[0], 10);
            region.offsetY = parseInt(tuple[1], 10);

            region.index = parseInt(reader.readValue(), 10);

            this.regions.push(region);
        }
    }
};
spine.Atlas.prototype = {
    findRegion: function (name) {
        var regions = this.regions;
        for (var i = 0, n = regions.length; i < n; i++)
            if (regions[i].name == name) return regions[i];
        return null;
    },
    dispose: function () {
        var pages = this.pages;
        for (var i = 0, n = pages.length; i < n; i++)
            this.textureLoader.unload(pages[i].rendererObject);
    },
    updateUVs: function (page) {
        var regions = this.regions;
        for (var i = 0, n = regions.length; i < n; i++) {
            var region = regions[i];
            if (region.page != page) continue;
            region.u = region.x / page.width;
            region.v = region.y / page.height;
            if (region.rotate) {
                region.u2 = (region.x + region.height) / page.width;
                region.v2 = (region.y + region.width) / page.height;
            } else {
                region.u2 = (region.x + region.width) / page.width;
                region.v2 = (region.y + region.height) / page.height;
            }
        }
    }
};

spine.Atlas.Format = {
    alpha: 0,
    intensity: 1,
    luminanceAlpha: 2,
    rgb565: 3,
    rgba4444: 4,
    rgb888: 5,
    rgba8888: 6
};

spine.Atlas.TextureFilter = {
    nearest: 0,
    linear: 1,
    mipMap: 2,
    mipMapNearestNearest: 3,
    mipMapLinearNearest: 4,
    mipMapNearestLinear: 5,
    mipMapLinearLinear: 6
};

spine.Atlas.TextureWrap = {
    mirroredRepeat: 0,
    clampToEdge: 1,
    repeat: 2
};

spine.AtlasPage = function () {};
spine.AtlasPage.prototype = {
    name: null,
    format: null,
    minFilter: null,
    magFilter: null,
    uWrap: null,
    vWrap: null,
    rendererObject: null,
    width: 0,
    height: 0
};

spine.AtlasRegion = function () {};
spine.AtlasRegion.prototype = {
    page: null,
    name: null,
    x: 0, y: 0,
    width: 0, height: 0,
    u: 0, v: 0, u2: 0, v2: 0,
    offsetX: 0, offsetY: 0,
    originalWidth: 0, originalHeight: 0,
    index: 0,
    rotate: false,
    splits: null,
    pads: null,
};

spine.AtlasReader = function (text) {
    this.lines = text.split(/\r\n|\r|\n/);
};
spine.AtlasReader.prototype = {
    index: 0,
    trim: function (value) {
        return value.replace(/^\s+|\s+$/g, "");
    },
    readLine: function () {
        if (this.index >= this.lines.length) return null;
        return this.lines[this.index++];
    },
    readValue: function () {
        var line = this.readLine();
        var colon = line.indexOf(":");
        if (colon == -1) throw "Invalid line: " + line;
        return this.trim(line.substring(colon + 1));
    },
    /** Returns the number of tuple values read (2 or 4). */
    readTuple: function (tuple) {
        var line = this.readLine();
        var colon = line.indexOf(":");
        if (colon == -1) throw "Invalid line: " + line;
        var i = 0, lastMatch= colon + 1;
        for (; i < 3; i++) {
            var comma = line.indexOf(",", lastMatch);
            if (comma == -1) {
                if (!i) throw "Invalid line: " + line;
                break;
            }
            tuple[i] = this.trim(line.substr(lastMatch, comma - lastMatch));
            lastMatch = comma + 1;
        }
        tuple[i] = this.trim(line.substring(lastMatch));
        return i + 1;
    }
}

spine.AtlasAttachmentLoader = function (atlas) {
    this.atlas = atlas;
}
spine.AtlasAttachmentLoader.prototype = {
    newAttachment: function (skin, type, name) {
        switch (type) {
        case spine.AttachmentType.region:
            var region = this.atlas.findRegion(name);
            if (!region) throw "Region not found in atlas: " + name + " (" + type + ")";
            var attachment = new spine.RegionAttachment(name);
            attachment.rendererObject = region;
            attachment.setUVs(region.u, region.v, region.u2, region.v2, region.rotate);
            attachment.regionOffsetX = region.offsetX;
            attachment.regionOffsetY = region.offsetY;
            attachment.regionWidth = region.width;
            attachment.regionHeight = region.height;
            attachment.regionOriginalWidth = region.originalWidth;
            attachment.regionOriginalHeight = region.originalHeight;
            return attachment;
        }
        throw "Unknown attachment type: " + type;
    }
}

spine.Bone.yDown = true;
PIXI.AnimCache = {};

/**
 * A class that enables the you to import and run your spine animations in pixi.
 * Spine animation data needs to be loaded using the PIXI.AssetLoader or PIXI.SpineLoader before it can be used by this class
 * See example 12 (http://www.goodboydigital.com/pixijs/examples/12/) to see a working example and check out the source
 *
 * @class Spine
 * @extends DisplayObjectContainer
 * @constructor
 * @param url {String} The url of the spine anim file to be used
 */
PIXI.Spine = function (url) {
    PIXI.DisplayObjectContainer.call(this);

    this.spineData = PIXI.AnimCache[url];

    if (!this.spineData) {
        throw new Error("Spine data must be preloaded using PIXI.SpineLoader or PIXI.AssetLoader: " + url);
    }

    this.skeleton = new spine.Skeleton(this.spineData);
    this.skeleton.updateWorldTransform();

    this.stateData = new spine.AnimationStateData(this.spineData);
    this.state = new spine.AnimationState(this.stateData);

    this.slotContainers = [];

    for (var i = 0, n = this.skeleton.drawOrder.length; i < n; i++) {
        var slot = this.skeleton.drawOrder[i];
        var attachment = slot.attachment;
        var slotContainer = new PIXI.DisplayObjectContainer();
        this.slotContainers.push(slotContainer);
        this.addChild(slotContainer);
        if (!(attachment instanceof spine.RegionAttachment)) {
            continue;
        }
        var spriteName = attachment.rendererObject.name;
        var sprite = this.createSprite(slot, attachment.rendererObject);
        slot.currentSprite = sprite;
        slot.currentSpriteName = spriteName;
        slotContainer.addChild(sprite);
    }
};

PIXI.Spine.prototype = Object.create(PIXI.DisplayObjectContainer.prototype);
PIXI.Spine.prototype.constructor = PIXI.Spine;

/*
 * Updates the object transform for rendering
 *
 * @method updateTransform
 * @private
 */
PIXI.Spine.prototype.updateTransform = function () {
    this.lastTime = this.lastTime || Date.now();
    var timeDelta = (Date.now() - this.lastTime) * 0.001;
    this.lastTime = Date.now();
    this.state.update(timeDelta);
    this.state.apply(this.skeleton);
    this.skeleton.updateWorldTransform();

    var drawOrder = this.skeleton.drawOrder;
    for (var i = 0, n = drawOrder.length; i < n; i++) {
        var slot = drawOrder[i];
        var attachment = slot.attachment;
        var slotContainer = this.slotContainers[i];
        if (!(attachment instanceof spine.RegionAttachment)) {
            slotContainer.visible = false;
            continue;
        }

        if (attachment.rendererObject) {
            if (!slot.currentSpriteName || slot.currentSpriteName != attachment.name) {
                var spriteName = attachment.rendererObject.name;
                if (slot.currentSprite !== undefined) {
                    slot.currentSprite.visible = false;
                }
                slot.sprites = slot.sprites || {};
                if (slot.sprites[spriteName] !== undefined) {
                    slot.sprites[spriteName].visible = true;
                } else {
                    var sprite = this.createSprite(slot, attachment.rendererObject);
                    slotContainer.addChild(sprite);
                }
                slot.currentSprite = slot.sprites[spriteName];
                slot.currentSpriteName = spriteName;
            }
        }
        slotContainer.visible = true;

        var bone = slot.bone;

        slotContainer.position.x = bone.worldX + attachment.x * bone.m00 + attachment.y * bone.m01;
        slotContainer.position.y = bone.worldY + attachment.x * bone.m10 + attachment.y * bone.m11;
        slotContainer.scale.x = bone.worldScaleX;
        slotContainer.scale.y = bone.worldScaleY;

        slotContainer.rotation = -(slot.bone.worldRotation * Math.PI / 180);
    }

    PIXI.DisplayObjectContainer.prototype.updateTransform.call(this);
};


PIXI.Spine.prototype.createSprite = function (slot, descriptor) {
    var name = PIXI.TextureCache[descriptor.name] ? descriptor.name : descriptor.name + ".png";
    var sprite = new PIXI.Sprite(PIXI.Texture.fromFrame(name));
    sprite.scale = descriptor.scale;
    sprite.rotation = descriptor.rotation;
    sprite.anchor.x = sprite.anchor.y = 0.5;

    slot.sprites = slot.sprites || {};
    slot.sprites[descriptor.name] = sprite;
    return sprite;
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

PIXI.BaseTextureCache = {};
PIXI.texturesToUpdate = [];
PIXI.texturesToDestroy = [];

/**
 * A texture stores the information that represents an image. All textures have a base texture
 *
 * @class BaseTexture
 * @uses EventTarget
 * @constructor
 * @param source {String} the source object (image or canvas)
 */
PIXI.BaseTexture = function(source, scaleMode)
{
    PIXI.EventTarget.call( this );

    /**
     * [read-only] The width of the base texture set when the image has loaded
     *
     * @property width
     * @type Number
     * @readOnly
     */
    this.width = 100;

    /**
     * [read-only] The height of the base texture set when the image has loaded
     *
     * @property height
     * @type Number
     * @readOnly
     */
    this.height = 100;

    /**
     * The scale mode to apply when scaling this texture
     * @property scaleMode
     * @type PIXI.BaseTexture.SCALE_MODE
     * @default PIXI.BaseTexture.SCALE_MODE.LINEAR
     */
    this.scaleMode = scaleMode || PIXI.BaseTexture.SCALE_MODE.DEFAULT;

    /**
     * [read-only] Describes if the base texture has loaded or not
     *
     * @property hasLoaded
     * @type Boolean
     * @readOnly
     */
    this.hasLoaded = false;

    /**
     * The source that is loaded to create the texture
     *
     * @property source
     * @type Image
     */
    this.source = source;

    if(!source)return;

    if(this.source instanceof Image || this.source instanceof HTMLImageElement)
    {
        if(this.source.complete)
        {
            this.hasLoaded = true;
            this.width = this.source.width;
            this.height = this.source.height;

            PIXI.texturesToUpdate.push(this);
        }
        else
        {

            var scope = this;
            this.source.onload = function() {

                scope.hasLoaded = true;
                scope.width = scope.source.width;
                scope.height = scope.source.height;

                // add it to somewhere...
                PIXI.texturesToUpdate.push(scope);
                scope.dispatchEvent( { type: 'loaded', content: scope } );
            };
            //this.image.src = imageUrl;
        }
    }
    else
    {
        this.hasLoaded = true;
        this.width = this.source.width;
        this.height = this.source.height;

        PIXI.texturesToUpdate.push(this);
    }

    this.imageUrl = null;
    this._powerOf2 = false;


    // used for webGL
    this._glTextures = [];

};

PIXI.BaseTexture.prototype.constructor = PIXI.BaseTexture;

/**
 * Destroys this base texture
 *
 * @method destroy
 */
PIXI.BaseTexture.prototype.destroy = function()
{
    if(this.source instanceof Image)
    {
        if (this.imageUrl in PIXI.BaseTextureCache)
            delete PIXI.BaseTextureCache[this.imageUrl];
        this.imageUrl = null;
        this.source.src = null;
    }
    this.source = null;
    PIXI.texturesToDestroy.push(this);
};

/**
 *
 *
 * @method destroy
 */

PIXI.BaseTexture.prototype.updateSourceImage = function(newSrc)
{
    this.hasLoaded = false;
    this.source.src = null;
    this.source.src = newSrc;
};

/**
 * Helper function that returns a base texture based on an image url
 * If the image is not in the base texture cache it will be  created and loaded
 *
 * @static
 * @method fromImage
 * @param imageUrl {String} The image url of the texture
 * @return BaseTexture
 */
PIXI.BaseTexture.fromImage = function(imageUrl, crossorigin, scaleMode)
{
    var baseTexture = PIXI.BaseTextureCache[imageUrl];
    if(!baseTexture)
    {
        // new Image() breaks tex loading in some versions of Chrome.
        // See https://code.google.com/p/chromium/issues/detail?id=238071
        var image = new Image();//document.createElement('img');
        if (crossorigin)
        {
            image.crossOrigin = '';
        }
        image.src = imageUrl;
        baseTexture = new PIXI.BaseTexture(image, scaleMode);
        baseTexture.imageUrl = imageUrl;
        PIXI.BaseTextureCache[imageUrl] = baseTexture;
    }

    return baseTexture;
};

PIXI.BaseTexture.SCALE_MODE = {
    DEFAULT: 0, //default to LINEAR
    LINEAR: 0,
    NEAREST: 1
};
/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

PIXI.TextureCache = {};
PIXI.FrameCache = {};

/**
 * A texture stores the information that represents an image or part of an image. It cannot be added
 * to the display list directly. To do this use PIXI.Sprite. If no frame is provided then the whole image is used
 *
 * @class Texture
 * @uses EventTarget
 * @constructor
 * @param baseTexture {BaseTexture} The base texture source to create the texture from
 * @param frame {Rectangle} The rectangle frame of the texture to show
 */
PIXI.Texture = function(baseTexture, frame)
{
    PIXI.EventTarget.call( this );

    if(!frame)
    {
        this.noFrame = true;
        frame = new PIXI.Rectangle(0,0,1,1);
    }

    if(baseTexture instanceof PIXI.Texture)
        baseTexture = baseTexture.baseTexture;

    /**
     * The base texture of this texture
     *
     * @property baseTexture
     * @type BaseTexture
     */
    this.baseTexture = baseTexture;

    /**
     * The frame specifies the region of the base texture that this texture uses
     *
     * @property frame
     * @type Rectangle
     */
    this.frame = frame;

    /**
     * The trim point
     *
     * @property trim
     * @type Point
     */
    this.trim = new PIXI.Point();

    this.scope = this;

    if(baseTexture.hasLoaded)
    {
        if(this.noFrame)frame = new PIXI.Rectangle(0,0, baseTexture.width, baseTexture.height);

        this.setFrame(frame);
    }
    else
    {
        var scope = this;
        baseTexture.addEventListener('loaded', function(){ scope.onBaseTextureLoaded(); });
    }
};

PIXI.Texture.prototype.constructor = PIXI.Texture;

/**
 * Called when the base texture is loaded
 *
 * @method onBaseTextureLoaded
 * @param event
 * @private
 */
PIXI.Texture.prototype.onBaseTextureLoaded = function()
{
    var baseTexture = this.baseTexture;
    baseTexture.removeEventListener( 'loaded', this.onLoaded );

    if(this.noFrame)this.frame = new PIXI.Rectangle(0,0, baseTexture.width, baseTexture.height);

    this.setFrame(this.frame);

    this.scope.dispatchEvent( { type: 'update', content: this } );
};

/**
 * Destroys this texture
 *
 * @method destroy
 * @param destroyBase {Boolean} Whether to destroy the base texture as well
 */
PIXI.Texture.prototype.destroy = function(destroyBase)
{
    if(destroyBase) this.baseTexture.destroy();
};

/**
 * Specifies the rectangle region of the baseTexture
 *
 * @method setFrame
 * @param frame {Rectangle} The frame of the texture to set it to
 */
PIXI.Texture.prototype.setFrame = function(frame)
{
    this.frame = frame;
    this.width = frame.width;
    this.height = frame.height;

    if(frame.x + frame.width > this.baseTexture.width || frame.y + frame.height > this.baseTexture.height)
    {
        throw new Error('Texture Error: frame does not fit inside the base Texture dimensions ' + this);
    }

    this.updateFrame = true;

    PIXI.Texture.frameUpdates.push(this);
    //this.dispatchEvent( { type: 'update', content: this } );
};

PIXI.Texture.prototype._updateWebGLuvs = function()
{
    if(!this._uvs)this._uvs = new Float32Array(8);

    var frame = this.frame;
    var tw = this.baseTexture.width;
    var th = this.baseTexture.height;

    this._uvs[0] = frame.x / tw;
    this._uvs[1] = frame.y / th;

    this._uvs[2] = (frame.x + frame.width) / tw;
    this._uvs[3] = frame.y / th;

    this._uvs[4] = (frame.x + frame.width) / tw;
    this._uvs[5] = (frame.y + frame.height) / th;

    this._uvs[6] = frame.x / tw;
    this._uvs[7] = (frame.y + frame.height) / th;
};

/**
 * Helper function that returns a texture based on an image url
 * If the image is not in the texture cache it will be  created and loaded
 *
 * @static
 * @method fromImage
 * @param imageUrl {String} The image url of the texture
 * @param crossorigin {Boolean} Whether requests should be treated as crossorigin
 * @return Texture
 */
PIXI.Texture.fromImage = function(imageUrl, crossorigin, scaleMode)
{
    var texture = PIXI.TextureCache[imageUrl];

    if(!texture)
    {
        texture = new PIXI.Texture(PIXI.BaseTexture.fromImage(imageUrl, crossorigin, scaleMode));
        PIXI.TextureCache[imageUrl] = texture;
    }

    return texture;
};

/**
 * Helper function that returns a texture based on a frame id
 * If the frame id is not in the texture cache an error will be thrown
 *
 * @static
 * @method fromFrame
 * @param frameId {String} The frame id of the texture
 * @return Texture
 */
PIXI.Texture.fromFrame = function(frameId)
{
    var texture = PIXI.TextureCache[frameId];
    if(!texture) throw new Error('The frameId "' + frameId + '" does not exist in the texture cache ' + this);
    return texture;
};

/**
 * Helper function that returns a texture based on a canvas element
 * If the canvas is not in the texture cache it will be  created and loaded
 *
 * @static
 * @method fromCanvas
 * @param canvas {Canvas} The canvas element source of the texture
 * @return Texture
 */
PIXI.Texture.fromCanvas = function(canvas, scaleMode)
{
    var baseTexture = new PIXI.BaseTexture(canvas, scaleMode);
    return new PIXI.Texture(baseTexture);
};


/**
 * Adds a texture to the textureCache.
 *
 * @static
 * @method addTextureToCache
 * @param texture {Texture}
 * @param id {String} the id that the texture will be stored against.
 */
PIXI.Texture.addTextureToCache = function(texture, id)
{
    PIXI.TextureCache[id] = texture;
};

/**
 * Remove a texture from the textureCache.
 *
 * @static
 * @method removeTextureFromCache
 * @param id {String} the id of the texture to be removed
 * @return {Texture} the texture that was removed
 */
PIXI.Texture.removeTextureFromCache = function(id)
{
    var texture = PIXI.TextureCache[id];
    PIXI.TextureCache[id] = null;
    return texture;
};

// this is more for webGL.. it contains updated frames..
PIXI.Texture.frameUpdates = [];

PIXI.Texture.SCALE_MODE = PIXI.BaseTexture.SCALE_MODE;

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 A RenderTexture is a special texture that allows any pixi displayObject to be rendered to it.

 __Hint__: All DisplayObjects (exmpl. Sprites) that renders on RenderTexture should be preloaded.
 Otherwise black rectangles will be drawn instead.

 RenderTexture takes snapshot of DisplayObject passed to render method. If DisplayObject is passed to render method, position and rotation of it will be ignored. For example:

    var renderTexture = new PIXI.RenderTexture(800, 600);
    var sprite = PIXI.Sprite.fromImage("spinObj_01.png");
    sprite.position.x = 800/2;
    sprite.position.y = 600/2;
    sprite.anchor.x = 0.5;
    sprite.anchor.y = 0.5;
    renderTexture.render(sprite);

 Sprite in this case will be rendered to 0,0 position. To render this sprite at center DisplayObjectContainer should be used:

    var doc = new PIXI.DisplayObjectContainer();
    doc.addChild(sprite);
    renderTexture.render(doc);  // Renders to center of renderTexture

 @class RenderTexture
 @extends Texture
 @constructor
 @param width {Number} The width of the render texture
 @param height {Number} The height of the render texture
 */
PIXI.RenderTexture = function(width, height, renderer)
{
    PIXI.EventTarget.call( this );

    this.width = width || 100;
    this.height = height || 100;

    this.indetityMatrix = PIXI.mat3.create();

    this.frame = new PIXI.Rectangle(0, 0, this.width, this.height);

    this.baseTexture = new PIXI.BaseTexture();
    this.baseTexture.width = this.width;
    this.baseTexture.height = this.height;
    this.baseTexture._glTextures = [];

    this.baseTexture.hasLoaded = true;

    // each render texture can only belong to one renderer at the moment if its webGL
    this.renderer = renderer || PIXI.defaultRenderer;

    if(this.renderer.type === PIXI.WEBGL_RENDERER)
    {
        var gl = this.renderer.gl;

        this.textureBuffer = new PIXI.FilterTexture(gl, this.width, this.height);
        this.baseTexture._glTextures[gl.id] =  this.textureBuffer.texture;

        this.render = this.renderWebGL;
        this.projection = new PIXI.Point(this.width/2 , -this.height/2);
    }
    else
    {
        this.render = this.renderCanvas;
        this.textureBuffer = new PIXI.CanvasBuffer(this.width, this.height);
        this.baseTexture.source = this.textureBuffer.canvas;
    }

    PIXI.Texture.frameUpdates.push(this);
};

PIXI.RenderTexture.prototype = Object.create( PIXI.Texture.prototype );
PIXI.RenderTexture.prototype.constructor = PIXI.RenderTexture;

PIXI.RenderTexture.prototype.resize = function(width, height)
{
    this.width = width;
    this.height = height;

    this.frame.width = this.width;
    this.frame.height = this.height;

    if(this.renderer.type === PIXI.WEBGL_RENDERER)
    {
        this.projection.x = this.width / 2;
        this.projection.y = -this.height / 2;

        var gl = this.gl;
        gl.bindTexture(gl.TEXTURE_2D, this.baseTexture._glTextures[gl.id]);
        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA,  this.width,  this.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
    }
    else
    {
        this.textureBuffer.resize(this.width, this.height);
    }

    PIXI.Texture.frameUpdates.push(this);
};

/**
 * This function will draw the display object to the texture.
 *
 * @method renderWebGL
 * @param displayObject {DisplayObject} The display object to render this texture on
 * @param clear {Boolean} If true the texture will be cleared before the displayObject is drawn
 * @private
 */
PIXI.RenderTexture.prototype.renderWebGL = function(displayObject, position, clear)
{
    var gl = this.renderer.gl;

    gl.colorMask(true, true, true, true);

    gl.viewport(0, 0, this.width, this.height);

    gl.bindFramebuffer(gl.FRAMEBUFFER, this.textureBuffer.frameBuffer );

    if(clear)this.textureBuffer.clear();

    // THIS WILL MESS WITH HIT TESTING!
    var children = displayObject.children;

    //TODO -? create a new one??? dont think so!
    var originalWorldTransform = displayObject.worldTransform;
    displayObject.worldTransform = PIXI.mat3.create();//sthis.indetityMatrix;
    // modify to flip...
    displayObject.worldTransform[4] = -1;
    displayObject.worldTransform[5] = this.projection.y * -2;

    if(position)
    {
        displayObject.worldTransform[2] = position.x;
        displayObject.worldTransform[5] -= position.y;
    }

    for(var i=0,j=children.length; i<j; i++)
    {
        children[i].updateTransform();
    }


    //
    this.renderer.renderDisplayObject(displayObject, this.projection);

    displayObject.worldTransform = originalWorldTransform;
};


/**
 * This function will draw the display object to the texture.
 *
 * @method renderCanvas
 * @param displayObject {DisplayObject} The display object to render this texture on
 * @param clear {Boolean} If true the texture will be cleared before the displayObject is drawn
 * @private
 */
PIXI.RenderTexture.prototype.renderCanvas = function(displayObject, position, clear)
{
    //console.log("!!")
    var children = displayObject.children;

    displayObject.worldTransform = PIXI.mat3.create();

    if(position)
    {
        displayObject.worldTransform[2] = position.x;
        displayObject.worldTransform[5] = position.y;
    }

    for(var i = 0, j = children.length; i < j; i++)
    {
        children[i].updateTransform();
    }

    if(clear)this.textureBuffer.clear();

    var context = this.textureBuffer.context;

    this.renderer.renderDisplayObject(displayObject, context);

    context.setTransform(1,0,0,1,0,0);

};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * A Class that loads a bunch of images / sprite sheet / bitmap font files. Once the
 * assets have been loaded they are added to the PIXI Texture cache and can be accessed
 * easily through PIXI.Texture.fromImage() and PIXI.Sprite.fromImage()
 * When all items have been loaded this class will dispatch a 'onLoaded' event
 * As each individual item is loaded this class will dispatch a 'onProgress' event
 *
 * @class AssetLoader
 * @constructor
 * @uses EventTarget
 * @param {Array<String>} assetURLs an array of image/sprite sheet urls that you would like loaded
 *      supported. Supported image formats include 'jpeg', 'jpg', 'png', 'gif'. Supported
 *      sprite sheet data formats only include 'JSON' at this time. Supported bitmap font
 *      data formats include 'xml' and 'fnt'.
 * @param crossorigin {Boolean} Whether requests should be treated as crossorigin
 */
PIXI.AssetLoader = function(assetURLs, crossorigin)
{
    PIXI.EventTarget.call(this);

    /**
     * The array of asset URLs that are going to be loaded
     *
     * @property assetURLs
     * @type Array<String>
     */
    this.assetURLs = assetURLs;

    /**
     * Whether the requests should be treated as cross origin
     *
     * @property crossorigin
     * @type Boolean
     */
    this.crossorigin = crossorigin;

    /**
     * Maps file extension to loader types
     *
     * @property loadersByType
     * @type Object
     */
    this.loadersByType = {
        'jpg':  PIXI.ImageLoader,
        'jpeg': PIXI.ImageLoader,
        'png':  PIXI.ImageLoader,
        'gif':  PIXI.ImageLoader,
        'json': PIXI.JsonLoader,
        'atlas': PIXI.AtlasLoader,
        'anim': PIXI.SpineLoader,
        'xml':  PIXI.BitmapFontLoader,
        'fnt':  PIXI.BitmapFontLoader
    };
};

/**
 * Fired when an item has loaded
 * @event onProgress
 */

/**
 * Fired when all the assets have loaded
 * @event onComplete
 */

// constructor
PIXI.AssetLoader.prototype.constructor = PIXI.AssetLoader;


PIXI.AssetLoader.prototype._getDataType = function(str)
{
    var test = 'data:';
    //starts with 'data:'
    var start = str.slice(0, test.length).toLowerCase();
    if (start === test) {
        var data = str.slice(test.length);

        var sepIdx = data.indexOf(',');
        if (sepIdx === -1) //malformed data URI scheme
            return null;

        //e.g. 'image/gif;base64' => 'image/gif'
        var info = data.slice(0, sepIdx).split(';')[0];

        //We might need to handle some special cases here...
        //standardize text/plain to 'txt' file extension
        if (!info || info.toLowerCase() === 'text/plain')
            return 'txt';

        //User specified mime type, try splitting it by '/'
        return info.split('/').pop().toLowerCase();
    }

    return null;
};

/**
 * Starts loading the assets sequentially
 *
 * @method load
 */
PIXI.AssetLoader.prototype.load = function()
{
    var scope = this;

    function onLoad() {
        scope.onAssetLoaded();
    }

    this.loadCount = this.assetURLs.length;

    for (var i=0; i < this.assetURLs.length; i++)
    {
        var fileName = this.assetURLs[i];
        //first see if we have a data URI scheme..
        var fileType = this._getDataType(fileName);

        //if not, assume it's a file URI
        if (!fileType)
            fileType = fileName.split('?').shift().split('.').pop().toLowerCase();

        var Constructor = this.loadersByType[fileType];
        if(!Constructor)
            throw new Error(fileType + ' is an unsupported file type');

        var loader = new Constructor(fileName, this.crossorigin);

        loader.addEventListener('loaded', onLoad);
        loader.load();
    }
};

/**
 * Invoked after each file is loaded
 *
 * @method onAssetLoaded
 * @private
 */
PIXI.AssetLoader.prototype.onAssetLoaded = function()
{
    this.loadCount--;
    this.dispatchEvent({type: 'onProgress', content: this});
    if (this.onProgress) this.onProgress();

    if (!this.loadCount)
    {
        this.dispatchEvent({type: 'onComplete', content: this});
        if(this.onComplete) this.onComplete();
    }
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * The json file loader is used to load in JSON data and parsing it
 * When loaded this class will dispatch a 'loaded' event
 * If load failed this class will dispatch a 'error' event
 *
 * @class JsonLoader
 * @uses EventTarget
 * @constructor
 * @param url {String} The url of the JSON file
 * @param crossorigin {Boolean} Whether requests should be treated as crossorigin
 */
PIXI.JsonLoader = function (url, crossorigin) {
    PIXI.EventTarget.call(this);

    /**
     * The url of the bitmap font data
     *
     * @property url
     * @type String
     */
    this.url = url;

    /**
     * Whether the requests should be treated as cross origin
     *
     * @property crossorigin
     * @type Boolean
     */
    this.crossorigin = crossorigin;

    /**
     * [read-only] The base url of the bitmap font data
     *
     * @property baseUrl
     * @type String
     * @readOnly
     */
    this.baseUrl = url.replace(/[^\/]*$/, '');

    /**
     * [read-only] Whether the data has loaded yet
     *
     * @property loaded
     * @type Boolean
     * @readOnly
     */
    this.loaded = false;

};

// constructor
PIXI.JsonLoader.prototype.constructor = PIXI.JsonLoader;

/**
 * Loads the JSON data
 *
 * @method load
 */
PIXI.JsonLoader.prototype.load = function () {
    this.ajaxRequest = new PIXI.AjaxRequest();
    var scope = this;
    this.ajaxRequest.onreadystatechange = function () {
        scope.onJSONLoaded();
    };

    this.ajaxRequest.open('GET', this.url, true);
    if (this.ajaxRequest.overrideMimeType) this.ajaxRequest.overrideMimeType('application/json');
    this.ajaxRequest.send(null);
};

/**
 * Invoke when JSON file is loaded
 *
 * @method onJSONLoaded
 * @private
 */
PIXI.JsonLoader.prototype.onJSONLoaded = function () {
    if (this.ajaxRequest.readyState === 4) {
        if (this.ajaxRequest.status === 200 || window.location.protocol.indexOf('http') === -1) {
            this.json = JSON.parse(this.ajaxRequest.responseText);

            if(this.json.frames)
            {
                // sprite sheet
                var scope = this;
                var textureUrl = this.baseUrl + this.json.meta.image;
                var image = new PIXI.ImageLoader(textureUrl, this.crossorigin);
                var frameData = this.json.frames;

                this.texture = image.texture.baseTexture;
                image.addEventListener('loaded', function() {
                    scope.onLoaded();
                });

                for (var i in frameData) {
                    var rect = frameData[i].frame;
                    if (rect) {
                        PIXI.TextureCache[i] = new PIXI.Texture(this.texture, {
                            x: rect.x,
                            y: rect.y,
                            width: rect.w,
                            height: rect.h
                        });

                        // check to see ifthe sprite ha been trimmed..
                        if (frameData[i].trimmed) {

                            var texture =  PIXI.TextureCache[i];

                            texture.trimmed = true;

                            var actualSize = frameData[i].sourceSize;
                            var realSize = frameData[i].spriteSourceSize;

                            texture.trim.x = realSize.x;
                            texture.trim.y = realSize.y;
                            texture.trim.realWidth = actualSize.w;
                            texture.trim.realHeight = actualSize.h;
                        }
                    }
                }

                image.load();

            }
            else if(this.json.bones)
            {
                // spine animation
                var spineJsonParser = new spine.SkeletonJson();
                var skeletonData = spineJsonParser.readSkeletonData(this.json);
                PIXI.AnimCache[this.url] = skeletonData;
                this.onLoaded();
            }
            else
            {
                this.onLoaded();
            }
        }
        else
        {
            this.onError();
        }
    }
};

/**
 * Invoke when json file loaded
 *
 * @method onLoaded
 * @private
 */
PIXI.JsonLoader.prototype.onLoaded = function () {
    this.loaded = true;
    this.dispatchEvent({
        type: 'loaded',
        content: this
    });
};

/**
 * Invoke when error occured
 *
 * @method onError
 * @private
 */
PIXI.JsonLoader.prototype.onError = function () {
    this.dispatchEvent({
        type: 'error',
        content: this
    });
};
/**
 * @author Martin Kelm http://mkelm.github.com
 */

/**
 * The atlas file loader is used to load in Atlas data and parsing it
 * When loaded this class will dispatch a 'loaded' event
 * If load failed this class will dispatch a 'error' event
 * @class AtlasLoader
 * @extends EventTarget
 * @constructor
 * @param {String} url the url of the JSON file
 * @param {Boolean} crossorigin
 */

PIXI.AtlasLoader = function (url, crossorigin) {
    PIXI.EventTarget.call(this);
    this.url = url;
    this.baseUrl = url.replace(/[^\/]*$/, '');
    this.crossorigin = crossorigin;
    this.loaded = false;

};

// constructor
PIXI.AtlasLoader.constructor = PIXI.AtlasLoader;

/**
 * This will begin loading the JSON file
 */
PIXI.AtlasLoader.prototype.load = function () {
    this.ajaxRequest = new PIXI.AjaxRequest();
    this.ajaxRequest.onreadystatechange = this.onAtlasLoaded.bind(this);

    this.ajaxRequest.open('GET', this.url, true);
    if (this.ajaxRequest.overrideMimeType) this.ajaxRequest.overrideMimeType('application/json');
    this.ajaxRequest.send(null);
};

/**
 * Invoke when JSON file is loaded
 * @private
 */
PIXI.AtlasLoader.prototype.onAtlasLoaded = function () {
    if (this.ajaxRequest.readyState === 4) {
        if (this.ajaxRequest.status === 200 || window.location.href.indexOf('http') === -1) {
            this.atlas = {
                meta : {
                    image : []
                },
                frames : []
            };
            var result = this.ajaxRequest.responseText.split(/\r?\n/);
            var lineCount = -3;

            var currentImageId = 0;
            var currentFrame = null;
            var nameInNextLine = false;

            var i = 0,
                j = 0,
                selfOnLoaded = this.onLoaded.bind(this);

            // parser without rotation support yet!
            for (i = 0; i < result.length; i++) {
                result[i] = result[i].replace(/^\s+|\s+$/g, '');
                if (result[i] === '') {
                    nameInNextLine = i+1;
                }
                if (result[i].length > 0) {
                    if (nameInNextLine === i) {
                        this.atlas.meta.image.push(result[i]);
                        currentImageId = this.atlas.meta.image.length - 1;
                        this.atlas.frames.push({});
                        lineCount = -3;
                    } else if (lineCount > 0) {
                        if (lineCount % 7 === 1) { // frame name
                            if (currentFrame != null) { //jshint ignore:line
                                this.atlas.frames[currentImageId][currentFrame.name] = currentFrame;
                            }
                            currentFrame = { name: result[i], frame : {} };
                        } else {
                            var text = result[i].split(' ');
                            if (lineCount % 7 === 3) { // position
                                currentFrame.frame.x = Number(text[1].replace(',', ''));
                                currentFrame.frame.y = Number(text[2]);
                            } else if (lineCount % 7 === 4) { // size
                                currentFrame.frame.w = Number(text[1].replace(',', ''));
                                currentFrame.frame.h = Number(text[2]);
                            } else if (lineCount % 7 === 5) { // real size
                                var realSize = {
                                    x : 0,
                                    y : 0,
                                    w : Number(text[1].replace(',', '')),
                                    h : Number(text[2])
                                };

                                if (realSize.w > currentFrame.frame.w || realSize.h > currentFrame.frame.h) {
                                    currentFrame.trimmed = true;
                                    currentFrame.realSize = realSize;
                                } else {
                                    currentFrame.trimmed = false;
                                }
                            }
                        }
                    }
                    lineCount++;
                }
            }

            if (currentFrame != null) { //jshint ignore:line
                this.atlas.frames[currentImageId][currentFrame.name] = currentFrame;
            }

            if (this.atlas.meta.image.length > 0) {
                this.images = [];
                for (j = 0; j < this.atlas.meta.image.length; j++) {
                    // sprite sheet
                    var textureUrl = this.baseUrl + this.atlas.meta.image[j];
                    var frameData = this.atlas.frames[j];
                    this.images.push(new PIXI.ImageLoader(textureUrl, this.crossorigin));

                    for (i in frameData) {
                        var rect = frameData[i].frame;
                        if (rect) {
                            PIXI.TextureCache[i] = new PIXI.Texture(this.images[j].texture.baseTexture, {
                                x: rect.x,
                                y: rect.y,
                                width: rect.w,
                                height: rect.h
                            });
                            if (frameData[i].trimmed) {
                                PIXI.TextureCache[i].realSize = frameData[i].realSize;
                                // trim in pixi not supported yet, todo update trim properties if it is done ...
                                PIXI.TextureCache[i].trim.x = 0;
                                PIXI.TextureCache[i].trim.y = 0;
                            }
                        }
                    }
                }

                this.currentImageId = 0;
                for (j = 0; j < this.images.length; j++) {
                    this.images[j].addEventListener('loaded', selfOnLoaded);
                }
                this.images[this.currentImageId].load();

            } else {
                this.onLoaded();
            }

        } else {
            this.onError();
        }
    }
};

/**
 * Invoke when json file loaded
 * @private
 */
PIXI.AtlasLoader.prototype.onLoaded = function () {
    if (this.images.length - 1 > this.currentImageId) {
        this.currentImageId++;
        this.images[this.currentImageId].load();
    } else {
        this.loaded = true;
        this.dispatchEvent({
            type: 'loaded',
            content: this
        });
    }
};

/**
 * Invoke when error occured
 * @private
 */
PIXI.AtlasLoader.prototype.onError = function () {
    this.dispatchEvent({
        type: 'error',
        content: this
    });
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * The sprite sheet loader is used to load in JSON sprite sheet data
 * To generate the data you can use http://www.codeandweb.com/texturepacker and publish the 'JSON' format
 * There is a free version so thats nice, although the paid version is great value for money.
 * It is highly recommended to use Sprite sheets (also know as texture atlas') as it means sprite's can be batched and drawn together for highly increased rendering speed.
 * Once the data has been loaded the frames are stored in the PIXI texture cache and can be accessed though PIXI.Texture.fromFrameId() and PIXI.Sprite.fromFromeId()
 * This loader will also load the image file that the Spritesheet points to as well as the data.
 * When loaded this class will dispatch a 'loaded' event
 *
 * @class SpriteSheetLoader
 * @uses EventTarget
 * @constructor
 * @param url {String} The url of the sprite sheet JSON file
 * @param crossorigin {Boolean} Whether requests should be treated as crossorigin
 */
PIXI.SpriteSheetLoader = function (url, crossorigin) {
    /*
     * i use texture packer to load the assets..
     * http://www.codeandweb.com/texturepacker
     * make sure to set the format as 'JSON'
     */
    PIXI.EventTarget.call(this);

    /**
     * The url of the bitmap font data
     *
     * @property url
     * @type String
     */
    this.url = url;

    /**
     * Whether the requests should be treated as cross origin
     *
     * @property crossorigin
     * @type Boolean
     */
    this.crossorigin = crossorigin;

    /**
     * [read-only] The base url of the bitmap font data
     *
     * @property baseUrl
     * @type String
     * @readOnly
     */
    this.baseUrl = url.replace(/[^\/]*$/, '');

    /**
     * The texture being loaded
     *
     * @property texture
     * @type Texture
     */
    this.texture = null;

    /**
     * The frames of the sprite sheet
     *
     * @property frames
     * @type Object
     */
    this.frames = {};
};

// constructor
PIXI.SpriteSheetLoader.prototype.constructor = PIXI.SpriteSheetLoader;

/**
 * This will begin loading the JSON file
 *
 * @method load
 */
PIXI.SpriteSheetLoader.prototype.load = function () {
    var scope = this;
    var jsonLoader = new PIXI.JsonLoader(this.url, this.crossorigin);
    jsonLoader.addEventListener('loaded', function (event) {
        scope.json = event.content.json;
        scope.onLoaded();
    });
    jsonLoader.load();
};

/**
 * Invoke when all files are loaded (json and texture)
 *
 * @method onLoaded
 * @private
 */
PIXI.SpriteSheetLoader.prototype.onLoaded = function () {
    this.dispatchEvent({
        type: 'loaded',
        content: this
    });
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * The image loader class is responsible for loading images file formats ('jpeg', 'jpg', 'png' and 'gif')
 * Once the image has been loaded it is stored in the PIXI texture cache and can be accessed though PIXI.Texture.fromFrameId() and PIXI.Sprite.fromFromeId()
 * When loaded this class will dispatch a 'loaded' event
 *
 * @class ImageLoader
 * @uses EventTarget
 * @constructor
 * @param url {String} The url of the image
 * @param crossorigin {Boolean} Whether requests should be treated as crossorigin
 */
PIXI.ImageLoader = function(url, crossorigin)
{
    PIXI.EventTarget.call(this);

    /**
     * The texture being loaded
     *
     * @property texture
     * @type Texture
     */
    this.texture = PIXI.Texture.fromImage(url, crossorigin);

    /**
     * if the image is loaded with loadFramedSpriteSheet
     * frames will contain the sprite sheet frames
     *
     */
    this.frames = [];
};

// constructor
PIXI.ImageLoader.prototype.constructor = PIXI.ImageLoader;

/**
 * Loads image or takes it from cache
 *
 * @method load
 */
PIXI.ImageLoader.prototype.load = function()
{
    if(!this.texture.baseTexture.hasLoaded)
    {
        var scope = this;
        this.texture.baseTexture.addEventListener('loaded', function()
        {
            scope.onLoaded();
        });
    }
    else
    {
        this.onLoaded();
    }
};

/**
 * Invoked when image file is loaded or it is already cached and ready to use
 *
 * @method onLoaded
 * @private
 */
PIXI.ImageLoader.prototype.onLoaded = function()
{
    this.dispatchEvent({type: 'loaded', content: this});
};

/**
 * Loads image and split it to uniform sized frames
 *
 *
 * @method loadFramedSpriteSheet
 * @param frameWidth {Number} with of each frame
 * @param frameHeight {Number} height of each frame
 * @param textureName {String} if given, the frames will be cached in <textureName>-<ord> format
 */
PIXI.ImageLoader.prototype.loadFramedSpriteSheet = function(frameWidth, frameHeight, textureName)
{
    this.frames = [];
    var cols = Math.floor(this.texture.width / frameWidth);
    var rows = Math.floor(this.texture.height / frameHeight);

    var i=0;
    for (var y=0; y<rows; y++)
    {
        for (var x=0; x<cols; x++,i++)
        {
            var texture = new PIXI.Texture(this.texture, {
                x: x*frameWidth,
                y: y*frameHeight,
                width: frameWidth,
                height: frameHeight
            });

            this.frames.push(texture);
            if (textureName) PIXI.TextureCache[textureName + '-' + i] = texture;
        }
    }

    if(!this.texture.baseTexture.hasLoaded)
    {
        var scope = this;
        this.texture.baseTexture.addEventListener('loaded', function() {
            scope.onLoaded();
        });
    }
    else
    {
        this.onLoaded();
    }
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * The xml loader is used to load in XML bitmap font data ('xml' or 'fnt')
 * To generate the data you can use http://www.angelcode.com/products/bmfont/
 * This loader will also load the image file as the data.
 * When loaded this class will dispatch a 'loaded' event
 *
 * @class BitmapFontLoader
 * @uses EventTarget
 * @constructor
 * @param url {String} The url of the sprite sheet JSON file
 * @param crossorigin {Boolean} Whether requests should be treated as crossorigin
 */
PIXI.BitmapFontLoader = function(url, crossorigin)
{
    /*
     * i use texture packer to load the assets..
     * http://www.codeandweb.com/texturepacker
     * make sure to set the format as 'JSON'
     */
    PIXI.EventTarget.call(this);

    /**
     * The url of the bitmap font data
     *
     * @property url
     * @type String
     */
    this.url = url;

    /**
     * Whether the requests should be treated as cross origin
     *
     * @property crossorigin
     * @type Boolean
     */
    this.crossorigin = crossorigin;

    /**
     * [read-only] The base url of the bitmap font data
     *
     * @property baseUrl
     * @type String
     * @readOnly
     */
    this.baseUrl = url.replace(/[^\/]*$/, '');

    /**
     * [read-only] The texture of the bitmap font
     *
     * @property baseUrl
     * @type String
     */
    this.texture = null;
};

// constructor
PIXI.BitmapFontLoader.prototype.constructor = PIXI.BitmapFontLoader;

/**
 * Loads the XML font data
 *
 * @method load
 */
PIXI.BitmapFontLoader.prototype.load = function()
{
    this.ajaxRequest = new XMLHttpRequest();
    var scope = this;
    this.ajaxRequest.onreadystatechange = function()
    {
        scope.onXMLLoaded();
    };

    this.ajaxRequest.open('GET', this.url, true);
    if (this.ajaxRequest.overrideMimeType) this.ajaxRequest.overrideMimeType('application/xml');
    this.ajaxRequest.send(null);
};

/**
 * Invoked when XML file is loaded, parses the data
 *
 * @method onXMLLoaded
 * @private
 */
PIXI.BitmapFontLoader.prototype.onXMLLoaded = function()
{
    if (this.ajaxRequest.readyState === 4)
    {
        if (this.ajaxRequest.status === 200 || window.location.protocol.indexOf('http') === -1)
        {
            var responseXML = this.ajaxRequest.responseXML;
            if(!responseXML || /MSIE 9/i.test(navigator.userAgent) || navigator.isCocoonJS) {
                if(typeof(window.DOMParser) === 'function') {
                    var domparser = new DOMParser();
                    responseXML = domparser.parseFromString(this.ajaxRequest.responseText, 'text/xml');
                } else {
                    var div = document.createElement('div');
                    div.innerHTML = this.ajaxRequest.responseText;
                    responseXML = div;
                }
            }

            var textureUrl = this.baseUrl + responseXML.getElementsByTagName('page')[0].getAttribute('file');
            var image = new PIXI.ImageLoader(textureUrl, this.crossorigin);
            this.texture = image.texture.baseTexture;

            var data = {};
            var info = responseXML.getElementsByTagName('info')[0];
            var common = responseXML.getElementsByTagName('common')[0];
            data.font = info.getAttribute('face');
            data.size = parseInt(info.getAttribute('size'), 10);
            data.lineHeight = parseInt(common.getAttribute('lineHeight'), 10);
            data.chars = {};

            //parse letters
            var letters = responseXML.getElementsByTagName('char');

            for (var i = 0; i < letters.length; i++)
            {
                var charCode = parseInt(letters[i].getAttribute('id'), 10);

                var textureRect = new PIXI.Rectangle(
                    parseInt(letters[i].getAttribute('x'), 10),
                    parseInt(letters[i].getAttribute('y'), 10),
                    parseInt(letters[i].getAttribute('width'), 10),
                    parseInt(letters[i].getAttribute('height'), 10)
                );

                data.chars[charCode] = {
                    xOffset: parseInt(letters[i].getAttribute('xoffset'), 10),
                    yOffset: parseInt(letters[i].getAttribute('yoffset'), 10),
                    xAdvance: parseInt(letters[i].getAttribute('xadvance'), 10),
                    kerning: {},
                    texture: PIXI.TextureCache[charCode] = new PIXI.Texture(this.texture, textureRect)

                };
            }

            //parse kernings
            var kernings = responseXML.getElementsByTagName('kerning');
            for (i = 0; i < kernings.length; i++)
            {
                var first = parseInt(kernings[i].getAttribute('first'), 10);
                var second = parseInt(kernings[i].getAttribute('second'), 10);
                var amount = parseInt(kernings[i].getAttribute('amount'), 10);

                data.chars[second].kerning[first] = amount;

            }

            PIXI.BitmapText.fonts[data.font] = data;

            var scope = this;
            image.addEventListener('loaded', function() {
                scope.onLoaded();
            });
            image.load();
        }
    }
};

/**
 * Invoked when all files are loaded (xml/fnt and texture)
 *
 * @method onLoaded
 * @private
 */
PIXI.BitmapFontLoader.prototype.onLoaded = function()
{
    this.dispatchEvent({type: 'loaded', content: this});
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 * based on pixi impact spine implementation made by Eemeli Kelokorpi (@ekelokorpi) https://github.com/ekelokorpi
 *
 * Awesome JS run time provided by EsotericSoftware
 * https://github.com/EsotericSoftware/spine-runtimes
 *
 */

/**
 * The Spine loader is used to load in JSON spine data
 * To generate the data you need to use http://esotericsoftware.com/ and export the "JSON" format
 * Due to a clash of names  You will need to change the extension of the spine file from *.json to *.anim for it to load
 * See example 12 (http://www.goodboydigital.com/pixijs/examples/12/) to see a working example and check out the source
 * You will need to generate a sprite sheet to accompany the spine data
 * When loaded this class will dispatch a "loaded" event
 *
 * @class Spine
 * @uses EventTarget
 * @constructor
 * @param url {String} The url of the JSON file
 * @param crossorigin {Boolean} Whether requests should be treated as crossorigin
 */
PIXI.SpineLoader = function(url, crossorigin)
{
    PIXI.EventTarget.call(this);

    /**
     * The url of the bitmap font data
     *
     * @property url
     * @type String
     */
    this.url = url;

    /**
     * Whether the requests should be treated as cross origin
     *
     * @property crossorigin
     * @type Boolean
     */
    this.crossorigin = crossorigin;

    /**
     * [read-only] Whether the data has loaded yet
     *
     * @property loaded
     * @type Boolean
     * @readOnly
     */
    this.loaded = false;
};

PIXI.SpineLoader.prototype.constructor = PIXI.SpineLoader;

/**
 * Loads the JSON data
 *
 * @method load
 */
PIXI.SpineLoader.prototype.load = function () {

    var scope = this;
    var jsonLoader = new PIXI.JsonLoader(this.url, this.crossorigin);
    jsonLoader.addEventListener("loaded", function (event) {
        scope.json = event.content.json;
        scope.onLoaded();
    });
    jsonLoader.load();
};

/**
 * Invoke when JSON file is loaded
 *
 * @method onLoaded
 * @private
 */
PIXI.SpineLoader.prototype.onLoaded = function () {
    this.loaded = true;
    this.dispatchEvent({type: "loaded", content: this});
};


/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 * This is the base class for  creating a pixi.js filter. Currently only webGL supports filters.
 * If you want to make a custom filter this should be your base class.
 * @class AbstractFilter
 * @constructor
 * @param fragmentSrc
 * @param uniforms
 */
PIXI.AbstractFilter = function(fragmentSrc, uniforms)
{
    /**
    * An array of passes - some filters contain a few steps this array simply stores the steps in a liniear fashion.
    * For example the blur filter has two passes blurX and blurY.
    * @property passes
    * @type Array an array of filter objects
    * @private
    */
    this.passes = [this];

    this.shaders = [];

    this.dirty = true;
    this.padding = 0;

    /**
    @property uniforms
    @private
    */
    this.uniforms = uniforms || {};

    this.fragmentSrc = fragmentSrc || [];
};

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 *
 * The AlphaMaskFilter class uses the pixel values from the specified texture (called the displacement map) to perform a displacement of an object.
 * You can use this filter to apply all manor of crazy warping effects
 * Currently the r property of the texture is used offset the x and the g propery of the texture is used to offset the y.
 * @class AlphaMaskFilter
 * @contructor
 * @param texture {Texture} The texture used for the displacemtent map * must be power of 2 texture at the moment
 */
PIXI.AlphaMaskFilter = function(texture)
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];
    texture.baseTexture._powerOf2 = true;

    // set the uniforms
    //console.log()
    this.uniforms = {
        mask: {type: 'sampler2D', value:texture},
        mapDimensions:   {type: '2f', value:{x:1, y:5112}},
        dimensions:   {type: '4fv', value:[0,0,0,0]}
    };

    if(texture.baseTexture.hasLoaded)
    {
        this.uniforms.mask.value.x = texture.width;
        this.uniforms.mask.value.y = texture.height;
    }
    else
    {
        this.boundLoadedFunction = this.onTextureLoaded.bind(this);

        texture.baseTexture.on('loaded', this.boundLoadedFunction);
    }

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform sampler2D mask;',
        'uniform sampler2D uSampler;',
        'uniform vec2 offset;',
        'uniform vec4 dimensions;',
        'uniform vec2 mapDimensions;',

        'void main(void) {',
        '   vec2 mapCords = vTextureCoord.xy;',
        '   mapCords += (dimensions.zw + offset)/ dimensions.xy ;',
        '   mapCords.y *= -1.0;',
        '   mapCords.y += 1.0;',
        '   mapCords *= dimensions.xy / mapDimensions;',

        '   vec4 original =  texture2D(uSampler, vTextureCoord);',
        '   float maskAlpha =  texture2D(mask, mapCords).r;',
        '   original *= maskAlpha;',
        //'   original.rgb *= maskAlpha;',
        '   gl_FragColor =  original;',
        //'   gl_FragColor = gl_FragColor;',
        '}'
    ];
};

PIXI.AlphaMaskFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.AlphaMaskFilter.prototype.constructor = PIXI.AlphaMaskFilter;

PIXI.AlphaMaskFilter.prototype.onTextureLoaded = function()
{
    this.uniforms.mapDimensions.value.x = this.uniforms.mask.value.width;
    this.uniforms.mapDimensions.value.y = this.uniforms.mask.value.height;

    this.uniforms.mask.value.baseTexture.off('loaded', this.boundLoadedFunction);
};

/**
 * The texture used for the displacemtent map * must be power of 2 texture at the moment
 *
 * @property map
 * @type Texture
 */
Object.defineProperty(PIXI.AlphaMaskFilter.prototype, 'map', {
    get: function() {
        return this.uniforms.mask.value;
    },
    set: function(value) {
        this.uniforms.mask.value = value;
    }
});


/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 *
 * The ColorMatrixFilter class lets you apply a 4x4 matrix transformation on the RGBA
 * color and alpha values of every pixel on your displayObject to produce a result
 * with a new set of RGBA color and alpha values. Its pretty powerful!
 * @class ColorMatrixFilter
 * @contructor
 */
PIXI.ColorMatrixFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        matrix: {type: 'mat4', value: [1,0,0,0,
                                       0,1,0,0,
                                       0,0,1,0,
                                       0,0,0,1]},
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform float invert;',
        'uniform mat4 matrix;',
        'uniform sampler2D uSampler;',

        'void main(void) {',
        '   gl_FragColor = texture2D(uSampler, vTextureCoord) * matrix;',
      //  '   gl_FragColor = gl_FragColor;',
        '}'
    ];
};

PIXI.ColorMatrixFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.ColorMatrixFilter.prototype.constructor = PIXI.ColorMatrixFilter;

/**
 * Sets the matrix of the color matrix filter
 *
 * @property matrix
 * @type Array and array of 26 numbers
 * @default [1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]
 */
Object.defineProperty(PIXI.ColorMatrixFilter.prototype, 'matrix', {
    get: function() {
        return this.uniforms.matrix.value;
    },
    set: function(value) {
        this.uniforms.matrix.value = value;
    }
});
/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 *
 * This turns your displayObjects to black and white.
 * @class GrayFilter
 * @contructor
 */
PIXI.GrayFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        gray: {type: '1f', value: 1},
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform sampler2D uSampler;',
        'uniform float gray;',

        'void main(void) {',
        '   gl_FragColor = texture2D(uSampler, vTextureCoord);',
        '   gl_FragColor.rgb = mix(gl_FragColor.rgb, vec3(0.2126*gl_FragColor.r + 0.7152*gl_FragColor.g + 0.0722*gl_FragColor.b), gray);',
     //   '   gl_FragColor = gl_FragColor;',
        '}'
    ];
};

PIXI.GrayFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.GrayFilter.prototype.constructor = PIXI.GrayFilter;

/**
The strength of the gray. 1 will make the object black and white, 0 will make the object its normal color
@property gray
*/
Object.defineProperty(PIXI.GrayFilter.prototype, 'gray', {
    get: function() {
        return this.uniforms.gray.value;
    },
    set: function(value) {
        this.uniforms.gray.value = value;
    }
});

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 *
 * The DisplacementFilter class uses the pixel values from the specified texture (called the displacement map) to perform a displacement of an object.
 * You can use this filter to apply all manor of crazy warping effects
 * Currently the r property of the texture is used offset the x and the g propery of the texture is used to offset the y.
 * @class DisplacementFilter
 * @contructor
 * @param texture {Texture} The texture used for the displacemtent map * must be power of 2 texture at the moment
 */
PIXI.DisplacementFilter = function(texture)
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];
    texture.baseTexture._powerOf2 = true;

    // set the uniforms
    //console.log()
    this.uniforms = {
        displacementMap: {type: 'sampler2D', value:texture},
        scale:           {type: '2f', value:{x:30, y:30}},
        offset:          {type: '2f', value:{x:0, y:0}},
        mapDimensions:   {type: '2f', value:{x:1, y:5112}},
        dimensions:   {type: '4fv', value:[0,0,0,0]}
    };

    if(texture.baseTexture.hasLoaded)
    {
        this.uniforms.mapDimensions.value.x = texture.width;
        this.uniforms.mapDimensions.value.y = texture.height;
    }
    else
    {
        this.boundLoadedFunction = this.onTextureLoaded.bind(this);

        texture.baseTexture.on('loaded', this.boundLoadedFunction);
    }

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform sampler2D displacementMap;',
        'uniform sampler2D uSampler;',
        'uniform vec2 scale;',
        'uniform vec2 offset;',
        'uniform vec4 dimensions;',
        'uniform vec2 mapDimensions;',// = vec2(256.0, 256.0);',
        // 'const vec2 textureDimensions = vec2(750.0, 750.0);',

        'void main(void) {',
        '   vec2 mapCords = vTextureCoord.xy;',
        //'   mapCords -= ;',
        '   mapCords += (dimensions.zw + offset)/ dimensions.xy ;',
        '   mapCords.y *= -1.0;',
        '   mapCords.y += 1.0;',
        '   vec2 matSample = texture2D(displacementMap, mapCords).xy;',
        '   matSample -= 0.5;',
        '   matSample *= scale;',
        '   matSample /= mapDimensions;',
        '   gl_FragColor = texture2D(uSampler, vec2(vTextureCoord.x + matSample.x, vTextureCoord.y + matSample.y));',
        '   gl_FragColor.rgb = mix( gl_FragColor.rgb, gl_FragColor.rgb, 1.0);',
        '   vec2 cord = vTextureCoord;',

        //'   gl_FragColor =  texture2D(displacementMap, cord);',
     //   '   gl_FragColor = gl_FragColor;',
        '}'
    ];
};

PIXI.DisplacementFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.DisplacementFilter.prototype.constructor = PIXI.DisplacementFilter;

PIXI.DisplacementFilter.prototype.onTextureLoaded = function()
{
    this.uniforms.mapDimensions.value.x = this.uniforms.displacementMap.value.width;
    this.uniforms.mapDimensions.value.y = this.uniforms.displacementMap.value.height;

    this.uniforms.displacementMap.value.baseTexture.off('loaded', this.boundLoadedFunction);
};

/**
 * The texture used for the displacemtent map * must be power of 2 texture at the moment
 *
 * @property map
 * @type Texture
 */
Object.defineProperty(PIXI.DisplacementFilter.prototype, 'map', {
    get: function() {
        return this.uniforms.displacementMap.value;
    },
    set: function(value) {
        this.uniforms.displacementMap.value = value;
    }
});

/**
 * The multiplier used to scale the displacement result from the map calculation.
 *
 * @property scale
 * @type Point
 */
Object.defineProperty(PIXI.DisplacementFilter.prototype, 'scale', {
    get: function() {
        return this.uniforms.scale.value;
    },
    set: function(value) {
        this.uniforms.scale.value = value;
    }
});

/**
 * The offset used to move the displacement map.
 *
 * @property offset
 * @type Point
 */
Object.defineProperty(PIXI.DisplacementFilter.prototype, 'offset', {
    get: function() {
        return this.uniforms.offset.value;
    },
    set: function(value) {
        this.uniforms.offset.value = value;
    }
});

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 *
 * This filter applies a pixlate effect making display objects appear 'blocky'
 * @class PixelateFilter
 * @contructor
 */
PIXI.PixelateFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        invert: {type: '1f', value: 0},
        dimensions: {type: '4fv', value:new Float32Array([10000, 100, 10, 10])},
        pixelSize: {type: '2f', value:{x:10, y:10}},
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform vec2 testDim;',
        'uniform vec4 dimensions;',
        'uniform vec2 pixelSize;',
        'uniform sampler2D uSampler;',

        'void main(void) {',
        '   vec2 coord = vTextureCoord;',

        '   vec2 size = dimensions.xy/pixelSize;',

        '   vec2 color = floor( ( vTextureCoord * size ) ) / size + pixelSize/dimensions.xy * 0.5;',
        '   gl_FragColor = texture2D(uSampler, color);',
        '}'
    ];
};

PIXI.PixelateFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.PixelateFilter.prototype.constructor = PIXI.PixelateFilter;

/**
 *
 * This a point that describes the size of the blocs. x is the width of the block and y is the the height
 * @property size
 * @type Point
 */
Object.defineProperty(PIXI.PixelateFilter.prototype, 'size', {
    get: function() {
        return this.uniforms.pixelSize.value;
    },
    set: function(value) {
        this.dirty = true;
        this.uniforms.pixelSize.value = value;
    }
});

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

PIXI.BlurXFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        blur: {type: '1f', value: 1/512},
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform float blur;',
        'uniform sampler2D uSampler;',

        'void main(void) {',
        '   vec4 sum = vec4(0.0);',

        '   sum += texture2D(uSampler, vec2(vTextureCoord.x - 4.0*blur, vTextureCoord.y)) * 0.05;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x - 3.0*blur, vTextureCoord.y)) * 0.09;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x - 2.0*blur, vTextureCoord.y)) * 0.12;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x - blur, vTextureCoord.y)) * 0.15;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y)) * 0.16;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x + blur, vTextureCoord.y)) * 0.15;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x + 2.0*blur, vTextureCoord.y)) * 0.12;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x + 3.0*blur, vTextureCoord.y)) * 0.09;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x + 4.0*blur, vTextureCoord.y)) * 0.05;',

        '   gl_FragColor = sum;',
        '}'
    ];
};

PIXI.BlurXFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.BlurXFilter.prototype.constructor = PIXI.BlurXFilter;

Object.defineProperty(PIXI.BlurXFilter.prototype, 'blur', {
    get: function() {
        return this.uniforms.blur.value / (1/7000);
    },
    set: function(value) {

        this.dirty = true;
        this.uniforms.blur.value = (1/7000) * value;
    }
});

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

PIXI.BlurYFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        blur: {type: '1f', value: 1/512},
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform float blur;',
        'uniform sampler2D uSampler;',

        'void main(void) {',
        '   vec4 sum = vec4(0.0);',

        '   sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - 4.0*blur)) * 0.05;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - 3.0*blur)) * 0.09;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - 2.0*blur)) * 0.12;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - blur)) * 0.15;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y)) * 0.16;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + blur)) * 0.15;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + 2.0*blur)) * 0.12;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + 3.0*blur)) * 0.09;',
        '   sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + 4.0*blur)) * 0.05;',

        '   gl_FragColor = sum;',
        '}'
    ];
};

PIXI.BlurYFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.BlurYFilter.prototype.constructor = PIXI.BlurYFilter;

Object.defineProperty(PIXI.BlurYFilter.prototype, 'blur', {
    get: function() {
        return this.uniforms.blur.value / (1/7000);
    },
    set: function(value) {
        //this.padding = value;
        this.uniforms.blur.value = (1/7000) * value;
    }
});

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 *
 * The BlurFilter applies a Gaussian blur to an object.
 * The strength of the blur can be set for x- and y-axis separately (always relative to the stage).
 *
 * @class BlurFilter
 * @contructor
 */
PIXI.BlurFilter = function()
{
    this.blurXFilter = new PIXI.BlurXFilter();
    this.blurYFilter = new PIXI.BlurYFilter();

    this.passes =[this.blurXFilter, this.blurYFilter];
};

/**
 * Sets the strength of both the blurX and blurY properties simultaneously
 *
 * @property blur
 * @type Number the strength of the blur
 * @default 2
 */
Object.defineProperty(PIXI.BlurFilter.prototype, 'blur', {
    get: function() {
        return this.blurXFilter.blur;
    },
    set: function(value) {
        this.blurXFilter.blur = this.blurYFilter.blur = value;
    }
});

/**
 * Sets the strength of the blurX property simultaneously
 *
 * @property blurX
 * @type Number the strength of the blurX
 * @default 2
 */
Object.defineProperty(PIXI.BlurFilter.prototype, 'blurX', {
    get: function() {
        return this.blurXFilter.blur;
    },
    set: function(value) {
        this.blurXFilter.blur = value;
    }
});

/**
 * Sets the strength of the blurX property simultaneously
 *
 * @property blurY
 * @type Number the strength of the blurY
 * @default 2
 */
Object.defineProperty(PIXI.BlurFilter.prototype, 'blurY', {
    get: function() {
        return this.blurYFilter.blur;
    },
    set: function(value) {
        this.blurYFilter.blur = value;
    }
});

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 *
 * This inverts your displayObjects colors.
 * @class InvertFilter
 * @contructor
 */
PIXI.InvertFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        invert: {type: '1f', value: 1},
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform float invert;',
        'uniform sampler2D uSampler;',

        'void main(void) {',
        '   gl_FragColor = texture2D(uSampler, vTextureCoord);',
        '   gl_FragColor.rgb = mix( (vec3(1)-gl_FragColor.rgb) * gl_FragColor.a, gl_FragColor.rgb, 1.0 - invert);',
        //'   gl_FragColor.rgb = gl_FragColor.rgb  * gl_FragColor.a;',
      //  '   gl_FragColor = gl_FragColor * vColor;',
        '}'
    ];
};

PIXI.InvertFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.InvertFilter.prototype.constructor = PIXI.InvertFilter;

/**
The strength of the invert. 1 will fully invert the colors, 0 will make the object its normal color
@property invert
*/
Object.defineProperty(PIXI.InvertFilter.prototype, 'invert', {
    get: function() {
        return this.uniforms.invert.value;
    },
    set: function(value) {
        this.uniforms.invert.value = value;
    }
});

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 *
 * This applies a sepia effect to your displayObjects.
 * @class SepiaFilter
 * @contructor
 */
PIXI.SepiaFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        sepia: {type: '1f', value: 1},
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform float sepia;',
        'uniform sampler2D uSampler;',

        'const mat3 sepiaMatrix = mat3(0.3588, 0.7044, 0.1368, 0.2990, 0.5870, 0.1140, 0.2392, 0.4696, 0.0912);',

        'void main(void) {',
        '   gl_FragColor = texture2D(uSampler, vTextureCoord);',
        '   gl_FragColor.rgb = mix( gl_FragColor.rgb, gl_FragColor.rgb * sepiaMatrix, sepia);',
       // '   gl_FragColor = gl_FragColor * vColor;',
        '}'
    ];
};

PIXI.SepiaFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.SepiaFilter.prototype.constructor = PIXI.SepiaFilter;

/**
The strength of the sepia. 1 will apply the full sepia effect, 0 will make the object its normal color
@property sepia
*/
Object.defineProperty(PIXI.SepiaFilter.prototype, 'sepia', {
    get: function() {
        return this.uniforms.sepia.value;
    },
    set: function(value) {
        this.uniforms.sepia.value = value;
    }
});

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 *
 * This filter applies a pixlate effect making display objects appear 'blocky'
 * @class PixelateFilter
 * @contructor
 */
PIXI.TwistFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        radius: {type: '1f', value:0.5},
        angle: {type: '1f', value:5},
        offset: {type: '2f', value:{x:0.5, y:0.5}},
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform vec4 dimensions;',
        'uniform sampler2D uSampler;',

        'uniform float radius;',
        'uniform float angle;',
        'uniform vec2 offset;',

        'void main(void) {',
        '   vec2 coord = vTextureCoord - offset;',
        '   float distance = length(coord);',

        '   if (distance < radius) {',
        '       float ratio = (radius - distance) / radius;',
        '       float angleMod = ratio * ratio * angle;',
        '       float s = sin(angleMod);',
        '       float c = cos(angleMod);',
        '       coord = vec2(coord.x * c - coord.y * s, coord.x * s + coord.y * c);',
        '   }',

        '   gl_FragColor = texture2D(uSampler, coord+offset);',
        '}'
    ];
};

PIXI.TwistFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.TwistFilter.prototype.constructor = PIXI.TwistFilter;

/**
 *
 * This point describes the the offset of the twist
 * @property size
 * @type Point
 */
Object.defineProperty(PIXI.TwistFilter.prototype, 'offset', {
    get: function() {
        return this.uniforms.offset.value;
    },
    set: function(value) {
        this.dirty = true;
        this.uniforms.offset.value = value;
    }
});

/**
 *
 * This radius describes size of the twist
 * @property size
 * @type Number
 */
Object.defineProperty(PIXI.TwistFilter.prototype, 'radius', {
    get: function() {
        return this.uniforms.radius.value;
    },
    set: function(value) {
        this.dirty = true;
        this.uniforms.radius.value = value;
    }
});

/**
 *
 * This radius describes angle of the twist
 * @property angle
 * @type Number
 */
Object.defineProperty(PIXI.TwistFilter.prototype, 'angle', {
    get: function() {
        return this.uniforms.angle.value;
    },
    set: function(value) {
        this.dirty = true;
        this.uniforms.angle.value = value;
    }
});
/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

/**
 *
 * This turns your displayObjects to black and white.
 * @class ColorStepFilter
 * @contructor
 */
PIXI.ColorStepFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        step: {type: '1f', value: 5},
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform sampler2D uSampler;',
        'uniform float step;',

        'void main(void) {',
        '   vec4 color = texture2D(uSampler, vTextureCoord);',
        '   color = floor(color * step) / step;',
        '   gl_FragColor = color;',
        '}'
    ];
};

PIXI.ColorStepFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.ColorStepFilter.prototype.constructor = PIXI.ColorStepFilter;

/**
The number of steps.
@property step
*/
Object.defineProperty(PIXI.ColorStepFilter.prototype, 'step', {
    get: function() {
        return this.uniforms.step.value;
    },
    set: function(value) {
        this.uniforms.step.value = value;
    }
});

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 * original filter: https://github.com/evanw/glfx.js/blob/master/src/filters/fun/dotscreen.js
 */

/**
 *
 * This filter applies a pixlate effect making display objects appear 'blocky'
 * @class PixelateFilter
 * @contructor
 */
PIXI.DotScreenFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        scale: {type: '1f', value:1},
        angle: {type: '1f', value:5},
        dimensions:   {type: '4fv', value:[0,0,0,0]}
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform vec4 dimensions;',
        'uniform sampler2D uSampler;',

        'uniform float angle;',
        'uniform float scale;',

        'float pattern() {',
        '   float s = sin(angle), c = cos(angle);',
        '   vec2 tex = vTextureCoord * dimensions.xy;',
        '   vec2 point = vec2(',
        '       c * tex.x - s * tex.y,',
        '       s * tex.x + c * tex.y',
        '   ) * scale;',
        '   return (sin(point.x) * sin(point.y)) * 4.0;',
        '}',

        'void main() {',
        '   vec4 color = texture2D(uSampler, vTextureCoord);',
        '   float average = (color.r + color.g + color.b) / 3.0;',
        '   gl_FragColor = vec4(vec3(average * 10.0 - 5.0 + pattern()), color.a);',
        '}'
    ];
};

PIXI.DotScreenFilter.prototype = Object.create( PIXI.DotScreenFilter.prototype );
PIXI.DotScreenFilter.prototype.constructor = PIXI.DotScreenFilter;

/**
 *
 * This describes the the scale
 * @property scale
 * @type Number
 */
Object.defineProperty(PIXI.DotScreenFilter.prototype, 'scale', {
    get: function() {
        return this.uniforms.scale.value;
    },
    set: function(value) {
        this.dirty = true;
        this.uniforms.scale.value = value;
    }
});

/**
 *
 * This radius describes angle
 * @property angle
 * @type Number
 */
Object.defineProperty(PIXI.DotScreenFilter.prototype, 'angle', {
    get: function() {
        return this.uniforms.angle.value;
    },
    set: function(value) {
        this.dirty = true;
        this.uniforms.angle.value = value;
    }
});
/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

PIXI.CrossHatchFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        blur: {type: '1f', value: 1 / 512},
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform float blur;',
        'uniform sampler2D uSampler;',

        'void main(void) {',
        '    float lum = length(texture2D(uSampler, vTextureCoord.xy).rgb);',

        '    gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);',

        '    if (lum < 1.00) {',
        '        if (mod(gl_FragCoord.x + gl_FragCoord.y, 10.0) == 0.0) {',
        '            gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);',
        '        }',
        '    }',

        '    if (lum < 0.75) {',
        '        if (mod(gl_FragCoord.x - gl_FragCoord.y, 10.0) == 0.0) {',
        '            gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);',
        '        }',
        '    }',

        '    if (lum < 0.50) {',
        '        if (mod(gl_FragCoord.x + gl_FragCoord.y - 5.0, 10.0) == 0.0) {',
        '            gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);',
        '        }',
        '    }',

        '    if (lum < 0.3) {',
        '        if (mod(gl_FragCoord.x - gl_FragCoord.y - 5.0, 10.0) == 0.0) {',
        '            gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);',
        '        }',
        '    }',
        '}'
    ];
};

PIXI.CrossHatchFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.CrossHatchFilter.prototype.constructor = PIXI.BlurYFilter;

Object.defineProperty(PIXI.CrossHatchFilter.prototype, 'blur', {
    get: function() {
        return this.uniforms.blur.value / (1/7000);
    },
    set: function(value) {
        //this.padding = value;
        this.uniforms.blur.value = (1/7000) * value;
    }
});

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

PIXI.RGBSplitFilter = function()
{
    PIXI.AbstractFilter.call( this );

    this.passes = [this];

    // set the uniforms
    this.uniforms = {
        red: {type: '2f', value: {x:20, y:20}},
        green: {type: '2f', value: {x:-20, y:20}},
        blue: {type: '2f', value: {x:20, y:-20}},
        dimensions:   {type: '4fv', value:[0,0,0,0]}
    };

    this.fragmentSrc = [
        'precision mediump float;',
        'varying vec2 vTextureCoord;',
        'varying vec4 vColor;',
        'uniform vec2 red;',
        'uniform vec2 green;',
        'uniform vec2 blue;',
        'uniform vec4 dimensions;',
        'uniform sampler2D uSampler;',

        'void main(void) {',
        '   gl_FragColor.r = texture2D(uSampler, vTextureCoord + red/dimensions.xy).r;',
        '   gl_FragColor.g = texture2D(uSampler, vTextureCoord + green/dimensions.xy).g;',
        '   gl_FragColor.b = texture2D(uSampler, vTextureCoord + blue/dimensions.xy).b;',
        '   gl_FragColor.a = texture2D(uSampler, vTextureCoord).a;',
        '}'
    ];
};

PIXI.RGBSplitFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.RGBSplitFilter.prototype.constructor = PIXI.RGBSplitFilter;

Object.defineProperty(PIXI.RGBSplitFilter.prototype, 'angle', {
    get: function() {
        return this.uniforms.blur.value / (1/7000);
    },
    set: function(value) {
        //this.padding = value;
        this.uniforms.blur.value = (1/7000) * value;
    }
});

/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */

    if (typeof exports !== 'undefined') {
        if (typeof module !== 'undefined' && module.exports) {
            exports = module.exports = PIXI;
        }
        exports.PIXI = PIXI;
    } else if (typeof define !== 'undefined' && define.amd) {
        define(PIXI);
    } else {
        root.PIXI = PIXI;
    }
}).call(this);

/**
 * dat-gui JavaScript Controller Library
 * http://code.google.com/p/dat-gui
 *
 * Copyright 2011 Data Arts Team, Google Creative Lab
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 */

/** @namespace */
var dat = dat || {};

/** @namespace */
dat.gui = dat.gui || {};

/** @namespace */
dat.utils = dat.utils || {};

/** @namespace */
dat.controllers = dat.controllers || {};

/** @namespace */
dat.dom = dat.dom || {};

/** @namespace */
dat.color = dat.color || {};

dat.utils.css = (function () {
  return {
    load: function (url, doc) {
      doc = doc || document;
      var link = doc.createElement('link');
      link.type = 'text/css';
      link.rel = 'stylesheet';
      link.href = url;
      doc.getElementsByTagName('head')[0].appendChild(link);
    },
    inject: function(css, doc) {
      doc = doc || document;
      var injected = document.createElement('style');
      injected.type = 'text/css';
      injected.innerHTML = css;
      doc.getElementsByTagName('head')[0].appendChild(injected);
    }
  }
})();


dat.utils.common = (function () {
  
  var ARR_EACH = Array.prototype.forEach;
  var ARR_SLICE = Array.prototype.slice;

  /**
   * Band-aid methods for things that should be a lot easier in JavaScript.
   * Implementation and structure inspired by underscore.js
   * http://documentcloud.github.com/underscore/
   */

  return { 
    
    BREAK: {},
  
    extend: function(target) {
      
      this.each(ARR_SLICE.call(arguments, 1), function(obj) {
        
        for (var key in obj)
          if (!this.isUndefined(obj[key])) 
            target[key] = obj[key];
        
      }, this);
      
      return target;
      
    },
    
    defaults: function(target) {
      
      this.each(ARR_SLICE.call(arguments, 1), function(obj) {
        
        for (var key in obj)
          if (this.isUndefined(target[key])) 
            target[key] = obj[key];
        
      }, this);
      
      return target;
    
    },
    
    compose: function() {
      var toCall = ARR_SLICE.call(arguments);
            return function() {
              var args = ARR_SLICE.call(arguments);
              for (var i = toCall.length -1; i >= 0; i--) {
                args = [toCall[i].apply(this, args)];
              }
              return args[0];
            }
    },
    
    each: function(obj, itr, scope) {

      if (!obj) return;

      if (ARR_EACH && obj.forEach && obj.forEach === ARR_EACH) { 
        
        obj.forEach(itr, scope);
        
      } else if (obj.length === obj.length + 0) { // Is number but not NaN
        
        for (var key = 0, l = obj.length; key < l; key++)
          if (key in obj && itr.call(scope, obj[key], key) === this.BREAK) 
            return;
            
      } else {

        for (var key in obj) 
          if (itr.call(scope, obj[key], key) === this.BREAK)
            return;
            
      }
            
    },
    
    defer: function(fnc) {
      setTimeout(fnc, 0);
    },
    
    toArray: function(obj) {
      if (obj.toArray) return obj.toArray();
      return ARR_SLICE.call(obj);
    },

    isUndefined: function(obj) {
      return obj === undefined;
    },
    
    isNull: function(obj) {
      return obj === null;
    },
    
    isNaN: function(obj) {
      return obj !== obj;
    },
    
    isArray: Array.isArray || function(obj) {
      return obj.constructor === Array;
    },
    
    isObject: function(obj) {
      return obj === Object(obj);
    },
    
    isNumber: function(obj) {
      return obj === obj+0;
    },
    
    isString: function(obj) {
      return obj === obj+'';
    },
    
    isBoolean: function(obj) {
      return obj === false || obj === true;
    },
    
    isFunction: function(obj) {
      return Object.prototype.toString.call(obj) === '[object Function]';
    }
  
  };
    
})();


dat.controllers.Controller = (function (common) {

  /**
   * @class An "abstract" class that represents a given property of an object.
   *
   * @param {Object} object The object to be manipulated
   * @param {string} property The name of the property to be manipulated
   *
   * @member dat.controllers
   */
  var Controller = function(object, property) {

    this.initialValue = object[property];

    /**
     * Those who extend this class will put their DOM elements in here.
     * @type {DOMElement}
     */
    this.domElement = document.createElement('div');

    /**
     * The object to manipulate
     * @type {Object}
     */
    this.object = object;

    /**
     * The name of the property to manipulate
     * @type {String}
     */
    this.property = property;

    /**
     * The function to be called on change.
     * @type {Function}
     * @ignore
     */
    this.__onChange = undefined;

    /**
     * The function to be called on finishing change.
     * @type {Function}
     * @ignore
     */
    this.__onFinishChange = undefined;

  };

  common.extend(

      Controller.prototype,

      /** @lends dat.controllers.Controller.prototype */
      {

        /**
         * Specify that a function fire every time someone changes the value with
         * this Controller.
         *
         * @param {Function} fnc This function will be called whenever the value
         * is modified via this Controller.
         * @returns {dat.controllers.Controller} this
         */
        onChange: function(fnc) {
          this.__onChange = fnc;
          return this;
        },

        /**
         * Specify that a function fire every time someone "finishes" changing
         * the value wih this Controller. Useful for values that change
         * incrementally like numbers or strings.
         *
         * @param {Function} fnc This function will be called whenever
         * someone "finishes" changing the value via this Controller.
         * @returns {dat.controllers.Controller} this
         */
        onFinishChange: function(fnc) {
          this.__onFinishChange = fnc;
          return this;
        },

        /**
         * Change the value of <code>object[property]</code>
         *
         * @param {Object} newValue The new value of <code>object[property]</code>
         */
        setValue: function(newValue) {
          this.object[this.property] = newValue;
          if (this.__onChange) {
            this.__onChange.call(this, newValue);
          }
          this.updateDisplay();
          return this;
        },

        /**
         * Gets the value of <code>object[property]</code>
         *
         * @returns {Object} The current value of <code>object[property]</code>
         */
        getValue: function() {
          return this.object[this.property];
        },

        /**
         * Refreshes the visual display of a Controller in order to keep sync
         * with the object's current value.
         * @returns {dat.controllers.Controller} this
         */
        updateDisplay: function() {
          return this;
        },

        /**
         * @returns {Boolean} true if the value has deviated from initialValue
         */
        isModified: function() {
          return this.initialValue !== this.getValue()
        }

      }

  );

  return Controller;


})(dat.utils.common);


dat.dom.dom = (function (common) {

  var EVENT_MAP = {
    'HTMLEvents': ['change'],
    'MouseEvents': ['click','mousemove','mousedown','mouseup', 'mouseover'],
    'KeyboardEvents': ['keydown']
  };

  var EVENT_MAP_INV = {};
  common.each(EVENT_MAP, function(v, k) {
    common.each(v, function(e) {
      EVENT_MAP_INV[e] = k;
    });
  });

  var CSS_VALUE_PIXELS = /(\d+(\.\d+)?)px/;

  function cssValueToPixels(val) {

    if (val === '0' || common.isUndefined(val)) return 0;

    var match = val.match(CSS_VALUE_PIXELS);

    if (!common.isNull(match)) {
      return parseFloat(match[1]);
    }

    // TODO ...ems? %?

    return 0;

  }

  /**
   * @namespace
   * @member dat.dom
   */
  var dom = {

    /**
     * 
     * @param elem
     * @param selectable
     */
    makeSelectable: function(elem, selectable) {

      if (elem === undefined || elem.style === undefined) return;

      elem.onselectstart = selectable ? function() {
        return false;
      } : function() {
      };

      elem.style.MozUserSelect = selectable ? 'auto' : 'none';
      elem.style.KhtmlUserSelect = selectable ? 'auto' : 'none';
      elem.unselectable = selectable ? 'on' : 'off';

    },

    /**
     *
     * @param elem
     * @param horizontal
     * @param vertical
     */
    makeFullscreen: function(elem, horizontal, vertical) {

      if (common.isUndefined(horizontal)) horizontal = true;
      if (common.isUndefined(vertical)) vertical = true;

      elem.style.position = 'absolute';

      if (horizontal) {
        elem.style.left = 0;
        elem.style.right = 0;
      }
      if (vertical) {
        elem.style.top = 0;
        elem.style.bottom = 0;
      }

    },

    /**
     *
     * @param elem
     * @param eventType
     * @param params
     */
    fakeEvent: function(elem, eventType, params, aux) {
      params = params || {};
      var className = EVENT_MAP_INV[eventType];
      if (!className) {
        throw new Error('Event type ' + eventType + ' not supported.');
      }
      var evt = document.createEvent(className);
      switch (className) {
        case 'MouseEvents':
          var clientX = params.x || params.clientX || 0;
          var clientY = params.y || params.clientY || 0;
          evt.initMouseEvent(eventType, params.bubbles || false,
              params.cancelable || true, window, params.clickCount || 1,
              0, //screen X
              0, //screen Y
              clientX, //client X
              clientY, //client Y
              false, false, false, false, 0, null);
          break;
        case 'KeyboardEvents':
          var init = evt.initKeyboardEvent || evt.initKeyEvent; // webkit || moz
          common.defaults(params, {
            cancelable: true,
            ctrlKey: false,
            altKey: false,
            shiftKey: false,
            metaKey: false,
            keyCode: undefined,
            charCode: undefined
          });
          init(eventType, params.bubbles || false,
              params.cancelable, window,
              params.ctrlKey, params.altKey,
              params.shiftKey, params.metaKey,
              params.keyCode, params.charCode);
          break;
        default:
          evt.initEvent(eventType, params.bubbles || false,
              params.cancelable || true);
          break;
      }
      common.defaults(evt, aux);
      elem.dispatchEvent(evt);
    },

    /**
     *
     * @param elem
     * @param event
     * @param func
     * @param bool
     */
    bind: function(elem, event, func, bool) {
      bool = bool || false;
      if (elem.addEventListener)
        elem.addEventListener(event, func, bool);
      else if (elem.attachEvent)
        elem.attachEvent('on' + event, func);
      return dom;
    },

    /**
     *
     * @param elem
     * @param event
     * @param func
     * @param bool
     */
    unbind: function(elem, event, func, bool) {
      bool = bool || false;
      if (elem.removeEventListener)
        elem.removeEventListener(event, func, bool);
      else if (elem.detachEvent)
        elem.detachEvent('on' + event, func);
      return dom;
    },

    /**
     *
     * @param elem
     * @param className
     */
    addClass: function(elem, className) {
      if (elem.className === undefined) {
        elem.className = className;
      } else if (elem.className !== className) {
        var classes = elem.className.split(/ +/);
        if (classes.indexOf(className) == -1) {
          classes.push(className);
          elem.className = classes.join(' ').replace(/^\s+/, '').replace(/\s+$/, '');
        }
      }
      return dom;
    },

    /**
     *
     * @param elem
     * @param className
     */
    removeClass: function(elem, className) {
      if (className) {
        if (elem.className === undefined) {
          // elem.className = className;
        } else if (elem.className === className) {
          elem.removeAttribute('class');
        } else {
          var classes = elem.className.split(/ +/);
          var index = classes.indexOf(className);
          if (index != -1) {
            classes.splice(index, 1);
            elem.className = classes.join(' ');
          }
        }
      } else {
        elem.className = undefined;
      }
      return dom;
    },

    hasClass: function(elem, className) {
      return new RegExp('(?:^|\\s+)' + className + '(?:\\s+|$)').test(elem.className) || false;
    },

    /**
     *
     * @param elem
     */
    getWidth: function(elem) {

      var style = getComputedStyle(elem);

      return cssValueToPixels(style['border-left-width']) +
          cssValueToPixels(style['border-right-width']) +
          cssValueToPixels(style['padding-left']) +
          cssValueToPixels(style['padding-right']) +
          cssValueToPixels(style['width']);
    },

    /**
     *
     * @param elem
     */
    getHeight: function(elem) {

      var style = getComputedStyle(elem);

      return cssValueToPixels(style['border-top-width']) +
          cssValueToPixels(style['border-bottom-width']) +
          cssValueToPixels(style['padding-top']) +
          cssValueToPixels(style['padding-bottom']) +
          cssValueToPixels(style['height']);
    },

    /**
     *
     * @param elem
     */
    getOffset: function(elem) {
      var offset = {left: 0, top:0};
      if (elem.offsetParent) {
        do {
          offset.left += elem.offsetLeft;
          offset.top += elem.offsetTop;
        } while (elem = elem.offsetParent);
      }
      return offset;
    },

    // http://stackoverflow.com/posts/2684561/revisions
    /**
     * 
     * @param elem
     */
    isActive: function(elem) {
      return elem === document.activeElement && ( elem.type || elem.href );
    }

  };

  return dom;

})(dat.utils.common);


dat.controllers.OptionController = (function (Controller, dom, common) {

  /**
   * @class Provides a select input to alter the property of an object, using a
   * list of accepted values.
   *
   * @extends dat.controllers.Controller
   *
   * @param {Object} object The object to be manipulated
   * @param {string} property The name of the property to be manipulated
   * @param {Object|string[]} options A map of labels to acceptable values, or
   * a list of acceptable string values.
   *
   * @member dat.controllers
   */
  var OptionController = function(object, property, options) {

    OptionController.superclass.call(this, object, property);

    var _this = this;

    /**
     * The drop down menu
     * @ignore
     */
    this.__select = document.createElement('select');

    if (common.isArray(options)) {
      var map = {};
      common.each(options, function(element) {
        map[element] = element;
      });
      options = map;
    }

    common.each(options, function(value, key) {

      var opt = document.createElement('option');
      opt.innerHTML = key;
      opt.setAttribute('value', value);
      _this.__select.appendChild(opt);

    });

    // Acknowledge original value
    this.updateDisplay();

    dom.bind(this.__select, 'change', function() {
      var desiredValue = this.options[this.selectedIndex].value;
      _this.setValue(desiredValue);
    });

    this.domElement.appendChild(this.__select);

  };

  OptionController.superclass = Controller;

  common.extend(

      OptionController.prototype,
      Controller.prototype,

      {

        setValue: function(v) {
          var toReturn = OptionController.superclass.prototype.setValue.call(this, v);
          if (this.__onFinishChange) {
            this.__onFinishChange.call(this, this.getValue());
          }
          return toReturn;
        },

        updateDisplay: function() {
          this.__select.value = this.getValue();
          return OptionController.superclass.prototype.updateDisplay.call(this);
        }

      }

  );

  return OptionController;

})(dat.controllers.Controller,
dat.dom.dom,
dat.utils.common);


dat.controllers.NumberController = (function (Controller, common) {

  /**
   * @class Represents a given property of an object that is a number.
   *
   * @extends dat.controllers.Controller
   *
   * @param {Object} object The object to be manipulated
   * @param {string} property The name of the property to be manipulated
   * @param {Object} [params] Optional parameters
   * @param {Number} [params.min] Minimum allowed value
   * @param {Number} [params.max] Maximum allowed value
   * @param {Number} [params.step] Increment by which to change value
   *
   * @member dat.controllers
   */
  var NumberController = function(object, property, params) {

    NumberController.superclass.call(this, object, property);

    params = params || {};

    this.__min = params.min;
    this.__max = params.max;
    this.__step = params.step;

    if (common.isUndefined(this.__step)) {

      if (this.initialValue == 0) {
        this.__impliedStep = 1; // What are we, psychics?
      } else {
        // Hey Doug, check this out.
        this.__impliedStep = Math.pow(10, Math.floor(Math.log(this.initialValue)/Math.LN10))/10;
      }

    } else {

    	this.__impliedStep = this.__step;

    }

    this.__precision = numDecimals(this.__impliedStep);


  };

  NumberController.superclass = Controller;

  common.extend(

      NumberController.prototype,
      Controller.prototype,

      /** @lends dat.controllers.NumberController.prototype */
      {

        setValue: function(v) {

          if (this.__min !== undefined && v < this.__min) {
            v = this.__min;
          } else if (this.__max !== undefined && v > this.__max) {
            v = this.__max;
          }

          if (this.__step !== undefined && v % this.__step != 0) {
            v = Math.round(v / this.__step) * this.__step;
          }

          return NumberController.superclass.prototype.setValue.call(this, v);

        },

        /**
         * Specify a minimum value for <code>object[property]</code>.
         *
         * @param {Number} minValue The minimum value for
         * <code>object[property]</code>
         * @returns {dat.controllers.NumberController} this
         */
        min: function(v) {
          this.__min = v;
          return this;
        },

        /**
         * Specify a maximum value for <code>object[property]</code>.
         *
         * @param {Number} maxValue The maximum value for
         * <code>object[property]</code>
         * @returns {dat.controllers.NumberController} this
         */
        max: function(v) {
          this.__max = v;
          return this;
        },

        /**
         * Specify a step value that dat.controllers.NumberController
         * increments by.
         *
         * @param {Number} stepValue The step value for
         * dat.controllers.NumberController
         * @default if minimum and maximum specified increment is 1% of the
         * difference otherwise stepValue is 1
         * @returns {dat.controllers.NumberController} this
         */
        step: function(v) {
          this.__step = v;
          this.__impliedStep = v;
          this.__precision = numDecimals(v);
          return this;
        }

      }

  );

  function numDecimals(x) {
    x = x.toString();
    if (x.indexOf('.') > -1) {
      return x.length - x.indexOf('.') - 1;
    } else {
      return 0;
    }
  }

  return NumberController;

})(dat.controllers.Controller,
dat.utils.common);


dat.controllers.NumberControllerBox = (function (NumberController, dom, common) {

  /**
   * @class Represents a given property of an object that is a number and
   * provides an input element with which to manipulate it.
   *
   * @extends dat.controllers.Controller
   * @extends dat.controllers.NumberController
   *
   * @param {Object} object The object to be manipulated
   * @param {string} property The name of the property to be manipulated
   * @param {Object} [params] Optional parameters
   * @param {Number} [params.min] Minimum allowed value
   * @param {Number} [params.max] Maximum allowed value
   * @param {Number} [params.step] Increment by which to change value
   *
   * @member dat.controllers
   */
  var NumberControllerBox = function(object, property, params) {

    this.__truncationSuspended = false;

    NumberControllerBox.superclass.call(this, object, property, params);

    var _this = this;

    /**
     * {Number} Previous mouse y position
     * @ignore
     */
    var prev_y;

    this.__input = document.createElement('input');
    this.__input.setAttribute('type', 'text');

    // Makes it so manually specified values are not truncated.

    dom.bind(this.__input, 'change', onChange);
    dom.bind(this.__input, 'blur', onBlur);
    dom.bind(this.__input, 'mousedown', onMouseDown);
    dom.bind(this.__input, 'keydown', function(e) {

      // When pressing entire, you can be as precise as you want.
      if (e.keyCode === 13) {
        _this.__truncationSuspended = true;
        this.blur();
        _this.__truncationSuspended = false;
      }

    });

    function onChange() {
      var attempted = parseFloat(_this.__input.value);
      if (!common.isNaN(attempted)) _this.setValue(attempted);
    }

    function onBlur() {
      onChange();
      if (_this.__onFinishChange) {
        _this.__onFinishChange.call(_this, _this.getValue());
      }
    }

    function onMouseDown(e) {
      dom.bind(window, 'mousemove', onMouseDrag);
      dom.bind(window, 'mouseup', onMouseUp);
      prev_y = e.clientY;
    }

    function onMouseDrag(e) {

      var diff = prev_y - e.clientY;
      _this.setValue(_this.getValue() + diff * _this.__impliedStep);

      prev_y = e.clientY;

    }

    function onMouseUp() {
      dom.unbind(window, 'mousemove', onMouseDrag);
      dom.unbind(window, 'mouseup', onMouseUp);
    }

    this.updateDisplay();

    this.domElement.appendChild(this.__input);

  };

  NumberControllerBox.superclass = NumberController;

  common.extend(

      NumberControllerBox.prototype,
      NumberController.prototype,

      {

        updateDisplay: function() {

          this.__input.value = this.__truncationSuspended ? this.getValue() : roundToDecimal(this.getValue(), this.__precision);
          return NumberControllerBox.superclass.prototype.updateDisplay.call(this);
        }

      }

  );

  function roundToDecimal(value, decimals) {
    var tenTo = Math.pow(10, decimals);
    return Math.round(value * tenTo) / tenTo;
  }

  return NumberControllerBox;

})(dat.controllers.NumberController,
dat.dom.dom,
dat.utils.common);


dat.controllers.NumberControllerSlider = (function (NumberController, dom, css, common, styleSheet) {

  /**
   * @class Represents a given property of an object that is a number, contains
   * a minimum and maximum, and provides a slider element with which to
   * manipulate it. It should be noted that the slider element is made up of
   * <code>&lt;div&gt;</code> tags, <strong>not</strong> the html5
   * <code>&lt;slider&gt;</code> element.
   *
   * @extends dat.controllers.Controller
   * @extends dat.controllers.NumberController
   * 
   * @param {Object} object The object to be manipulated
   * @param {string} property The name of the property to be manipulated
   * @param {Number} minValue Minimum allowed value
   * @param {Number} maxValue Maximum allowed value
   * @param {Number} stepValue Increment by which to change value
   *
   * @member dat.controllers
   */
  var NumberControllerSlider = function(object, property, min, max, step) {

    NumberControllerSlider.superclass.call(this, object, property, { min: min, max: max, step: step });

    var _this = this;

    this.__background = document.createElement('div');
    this.__foreground = document.createElement('div');
    


    dom.bind(this.__background, 'mousedown', onMouseDown);
    
    dom.addClass(this.__background, 'slider');
    dom.addClass(this.__foreground, 'slider-fg');

    function onMouseDown(e) {

      dom.bind(window, 'mousemove', onMouseDrag);
      dom.bind(window, 'mouseup', onMouseUp);

      onMouseDrag(e);
    }

    function onMouseDrag(e) {

      e.preventDefault();

      var offset = dom.getOffset(_this.__background);
      var width = dom.getWidth(_this.__background);
      
      _this.setValue(
      	map(e.clientX, offset.left, offset.left + width, _this.__min, _this.__max)
      );

      return false;

    }

    function onMouseUp() {
      dom.unbind(window, 'mousemove', onMouseDrag);
      dom.unbind(window, 'mouseup', onMouseUp);
      if (_this.__onFinishChange) {
        _this.__onFinishChange.call(_this, _this.getValue());
      }
    }

    this.updateDisplay();

    this.__background.appendChild(this.__foreground);
    this.domElement.appendChild(this.__background);

  };

  NumberControllerSlider.superclass = NumberController;

  /**
   * Injects default stylesheet for slider elements.
   */
  NumberControllerSlider.useDefaultStyles = function() {
    css.inject(styleSheet);
  };

  common.extend(

      NumberControllerSlider.prototype,
      NumberController.prototype,

      {

        updateDisplay: function() {
          var pct = (this.getValue() - this.__min)/(this.__max - this.__min);
          this.__foreground.style.width = pct*100+'%';
          return NumberControllerSlider.superclass.prototype.updateDisplay.call(this);
        }

      }



  );

	function map(v, i1, i2, o1, o2) {
		return o1 + (o2 - o1) * ((v - i1) / (i2 - i1));
	}

  return NumberControllerSlider;
  
})(dat.controllers.NumberController,
dat.dom.dom,
dat.utils.css,
dat.utils.common,
"/**\n * dat-gui JavaScript Controller Library\n * http://code.google.com/p/dat-gui\n *\n * Copyright 2011 Data Arts Team, Google Creative Lab\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n */\n\n.slider {\n  box-shadow: inset 0 2px 4px rgba(0,0,0,0.15);\n  height: 1em;\n  border-radius: 1em;\n  background-color: #eee;\n  padding: 0 0.5em;\n  overflow: hidden;\n}\n\n.slider-fg {\n  padding: 1px 0 2px 0;\n  background-color: #aaa;\n  height: 1em;\n  margin-left: -0.5em;\n  padding-right: 0.5em;\n  border-radius: 1em 0 0 1em;\n}\n\n.slider-fg:after {\n  display: inline-block;\n  border-radius: 1em;\n  background-color: #fff;\n  border:  1px solid #aaa;\n  content: '';\n  float: right;\n  margin-right: -1em;\n  margin-top: -1px;\n  height: 0.9em;\n  width: 0.9em;\n}");


dat.controllers.FunctionController = (function (Controller, dom, common) {

  /**
   * @class Provides a GUI interface to fire a specified method, a property of an object.
   *
   * @extends dat.controllers.Controller
   *
   * @param {Object} object The object to be manipulated
   * @param {string} property The name of the property to be manipulated
   *
   * @member dat.controllers
   */
  var FunctionController = function(object, property, text) {

    FunctionController.superclass.call(this, object, property);

    var _this = this;

    this.__button = document.createElement('div');
    this.__button.innerHTML = text === undefined ? 'Fire' : text;
    dom.bind(this.__button, 'click', function(e) {
      e.preventDefault();
      _this.fire();
      return false;
    });

    dom.addClass(this.__button, 'button');

    this.domElement.appendChild(this.__button);


  };

  FunctionController.superclass = Controller;

  common.extend(

      FunctionController.prototype,
      Controller.prototype,
      {
        
        fire: function() {
          if (this.__onChange) {
            this.__onChange.call(this);
          }
          if (this.__onFinishChange) {
            this.__onFinishChange.call(this, this.getValue());
          }
          this.getValue().call(this.object);
        }
      }

  );

  return FunctionController;

})(dat.controllers.Controller,
dat.dom.dom,
dat.utils.common);


dat.controllers.BooleanController = (function (Controller, dom, common) {

  /**
   * @class Provides a checkbox input to alter the boolean property of an object.
   * @extends dat.controllers.Controller
   *
   * @param {Object} object The object to be manipulated
   * @param {string} property The name of the property to be manipulated
   *
   * @member dat.controllers
   */
  var BooleanController = function(object, property) {

    BooleanController.superclass.call(this, object, property);

    var _this = this;
    this.__prev = this.getValue();

    this.__checkbox = document.createElement('input');
    this.__checkbox.setAttribute('type', 'checkbox');


    dom.bind(this.__checkbox, 'change', onChange, false);

    this.domElement.appendChild(this.__checkbox);

    // Match original value
    this.updateDisplay();

    function onChange() {
      _this.setValue(!_this.__prev);
    }

  };

  BooleanController.superclass = Controller;

  common.extend(

      BooleanController.prototype,
      Controller.prototype,

      {

        setValue: function(v) {
          var toReturn = BooleanController.superclass.prototype.setValue.call(this, v);
          if (this.__onFinishChange) {
            this.__onFinishChange.call(this, this.getValue());
          }
          this.__prev = this.getValue();
          return toReturn;
        },

        updateDisplay: function() {
          
          if (this.getValue() === true) {
            this.__checkbox.setAttribute('checked', 'checked');
            this.__checkbox.checked = true;    
          } else {
              this.__checkbox.checked = false;
          }

          return BooleanController.superclass.prototype.updateDisplay.call(this);

        }


      }

  );

  return BooleanController;

})(dat.controllers.Controller,
dat.dom.dom,
dat.utils.common);


dat.color.toString = (function (common) {

  return function(color) {

    if (color.a == 1 || common.isUndefined(color.a)) {

      var s = color.hex.toString(16);
      while (s.length < 6) {
        s = '0' + s;
      }

      return '#' + s;

    } else {

      return 'rgba(' + Math.round(color.r) + ',' + Math.round(color.g) + ',' + Math.round(color.b) + ',' + color.a + ')';

    }

  }

})(dat.utils.common);


dat.color.interpret = (function (toString, common) {

  var result, toReturn;

  var interpret = function() {

    toReturn = false;

    var original = arguments.length > 1 ? common.toArray(arguments) : arguments[0];

    common.each(INTERPRETATIONS, function(family) {

      if (family.litmus(original)) {

        common.each(family.conversions, function(conversion, conversionName) {

          result = conversion.read(original);

          if (toReturn === false && result !== false) {
            toReturn = result;
            result.conversionName = conversionName;
            result.conversion = conversion;
            return common.BREAK;

          }

        });

        return common.BREAK;

      }

    });

    return toReturn;

  };

  var INTERPRETATIONS = [

    // Strings
    {

      litmus: common.isString,

      conversions: {

        THREE_CHAR_HEX: {

          read: function(original) {

            var test = original.match(/^#([A-F0-9])([A-F0-9])([A-F0-9])$/i);
            if (test === null) return false;

            return {
              space: 'HEX',
              hex: parseInt(
                  '0x' +
                      test[1].toString() + test[1].toString() +
                      test[2].toString() + test[2].toString() +
                      test[3].toString() + test[3].toString())
            };

          },

          write: toString

        },

        SIX_CHAR_HEX: {

          read: function(original) {

            var test = original.match(/^#([A-F0-9]{6})$/i);
            if (test === null) return false;

            return {
              space: 'HEX',
              hex: parseInt('0x' + test[1].toString())
            };

          },

          write: toString

        },

        CSS_RGB: {

          read: function(original) {

            var test = original.match(/^rgb\(\s*(.+)\s*,\s*(.+)\s*,\s*(.+)\s*\)/);
            if (test === null) return false;

            return {
              space: 'RGB',
              r: parseFloat(test[1]),
              g: parseFloat(test[2]),
              b: parseFloat(test[3])
            };

          },

          write: toString

        },

        CSS_RGBA: {

          read: function(original) {

            var test = original.match(/^rgba\(\s*(.+)\s*,\s*(.+)\s*,\s*(.+)\s*\,\s*(.+)\s*\)/);
            if (test === null) return false;

            return {
              space: 'RGB',
              r: parseFloat(test[1]),
              g: parseFloat(test[2]),
              b: parseFloat(test[3]),
              a: parseFloat(test[4])
            };

          },

          write: toString

        }

      }

    },

    // Numbers
    {

      litmus: common.isNumber,

      conversions: {

        HEX: {
          read: function(original) {
            return {
              space: 'HEX',
              hex: original,
              conversionName: 'HEX'
            }
          },

          write: function(color) {
            return color.hex;
          }
        }

      }

    },

    // Arrays
    {

      litmus: common.isArray,

      conversions: {

        RGB_ARRAY: {
          read: function(original) {
            if (original.length != 3) return false;
            return {
              space: 'RGB',
              r: original[0],
              g: original[1],
              b: original[2]
            };
          },

          write: function(color) {
            return [color.r, color.g, color.b];
          }

        },

        RGBA_ARRAY: {
          read: function(original) {
            if (original.length != 4) return false;
            return {
              space: 'RGB',
              r: original[0],
              g: original[1],
              b: original[2],
              a: original[3]
            };
          },

          write: function(color) {
            return [color.r, color.g, color.b, color.a];
          }

        }

      }

    },

    // Objects
    {

      litmus: common.isObject,

      conversions: {

        RGBA_OBJ: {
          read: function(original) {
            if (common.isNumber(original.r) &&
                common.isNumber(original.g) &&
                common.isNumber(original.b) &&
                common.isNumber(original.a)) {
              return {
                space: 'RGB',
                r: original.r,
                g: original.g,
                b: original.b,
                a: original.a
              }
            }
            return false;
          },

          write: function(color) {
            return {
              r: color.r,
              g: color.g,
              b: color.b,
              a: color.a
            }
          }
        },

        RGB_OBJ: {
          read: function(original) {
            if (common.isNumber(original.r) &&
                common.isNumber(original.g) &&
                common.isNumber(original.b)) {
              return {
                space: 'RGB',
                r: original.r,
                g: original.g,
                b: original.b
              }
            }
            return false;
          },

          write: function(color) {
            return {
              r: color.r,
              g: color.g,
              b: color.b
            }
          }
        },

        HSVA_OBJ: {
          read: function(original) {
            if (common.isNumber(original.h) &&
                common.isNumber(original.s) &&
                common.isNumber(original.v) &&
                common.isNumber(original.a)) {
              return {
                space: 'HSV',
                h: original.h,
                s: original.s,
                v: original.v,
                a: original.a
              }
            }
            return false;
          },

          write: function(color) {
            return {
              h: color.h,
              s: color.s,
              v: color.v,
              a: color.a
            }
          }
        },

        HSV_OBJ: {
          read: function(original) {
            if (common.isNumber(original.h) &&
                common.isNumber(original.s) &&
                common.isNumber(original.v)) {
              return {
                space: 'HSV',
                h: original.h,
                s: original.s,
                v: original.v
              }
            }
            return false;
          },

          write: function(color) {
            return {
              h: color.h,
              s: color.s,
              v: color.v
            }
          }

        }

      }

    }


  ];

  return interpret;


})(dat.color.toString,
dat.utils.common);


dat.GUI = dat.gui.GUI = (function (css, saveDialogueContents, styleSheet, controllerFactory, Controller, BooleanController, FunctionController, NumberControllerBox, NumberControllerSlider, OptionController, ColorController, requestAnimationFrame, CenteredDiv, dom, common) {

  css.inject(styleSheet);

  /** Outer-most className for GUI's */
  var CSS_NAMESPACE = 'dg';

  var HIDE_KEY_CODE = 72;

  /** The only value shared between the JS and SCSS. Use caution. */
  var CLOSE_BUTTON_HEIGHT = 20;

  var DEFAULT_DEFAULT_PRESET_NAME = 'Default';

  var SUPPORTS_LOCAL_STORAGE = (function() {
    try {
      return 'localStorage' in window && window['localStorage'] !== null;
    } catch (e) {
      return false;
    }
  })();

  var SAVE_DIALOGUE;

  /** Have we yet to create an autoPlace GUI? */
  var auto_place_virgin = true;

  /** Fixed position div that auto place GUI's go inside */
  var auto_place_container;

  /** Are we hiding the GUI's ? */
  var hide = false;

  /** GUI's which should be hidden */
  var hideable_guis = [];

  /**
   * A lightweight controller library for JavaScript. It allows you to easily
   * manipulate variables and fire functions on the fly.
   * @class
   *
   * @member dat.gui
   *
   * @param {Object} [params]
   * @param {String} [params.name] The name of this GUI.
   * @param {Object} [params.load] JSON object representing the saved state of
   * this GUI.
   * @param {Boolean} [params.auto=true]
   * @param {dat.gui.GUI} [params.parent] The GUI I'm nested in.
   * @param {Boolean} [params.closed] If true, starts closed
   */
  var GUI = function(params) {

    var _this = this;

    /**
     * Outermost DOM Element
     * @type DOMElement
     */
    this.domElement = document.createElement('div');
    this.__ul = document.createElement('ul');
    this.domElement.appendChild(this.__ul);

    dom.addClass(this.domElement, CSS_NAMESPACE);

    /**
     * Nested GUI's by name
     * @ignore
     */
    this.__folders = {};

    this.__controllers = [];

    /**
     * List of objects I'm remembering for save, only used in top level GUI
     * @ignore
     */
    this.__rememberedObjects = [];

    /**
     * Maps the index of remembered objects to a map of controllers, only used
     * in top level GUI.
     *
     * @private
     * @ignore
     *
     * @example
     * [
     *  {
     *    propertyName: Controller,
     *    anotherPropertyName: Controller
     *  },
     *  {
     *    propertyName: Controller
     *  }
     * ]
     */
    this.__rememberedObjectIndecesToControllers = [];

    this.__listening = [];

    params = params || {};

    // Default parameters
    params = common.defaults(params, {
      autoPlace: true,
      width: GUI.DEFAULT_WIDTH
    });

    params = common.defaults(params, {
      resizable: params.autoPlace,
      hideable: params.autoPlace
    });


    if (!common.isUndefined(params.load)) {

      // Explicit preset
      if (params.preset) params.load.preset = params.preset;

    } else {

      params.load = { preset: DEFAULT_DEFAULT_PRESET_NAME };

    }

    if (common.isUndefined(params.parent) && params.hideable) {
      hideable_guis.push(this);
    }

    // Only root level GUI's are resizable.
    params.resizable = common.isUndefined(params.parent) && params.resizable;


    if (params.autoPlace && common.isUndefined(params.scrollable)) {
      params.scrollable = true;
    }
//    params.scrollable = common.isUndefined(params.parent) && params.scrollable === true;

    // Not part of params because I don't want people passing this in via
    // constructor. Should be a 'remembered' value.
    var use_local_storage =
        SUPPORTS_LOCAL_STORAGE &&
            localStorage.getItem(getLocalStorageHash(this, 'isLocal')) === 'true';

    var saveToLocalStorage;

    Object.defineProperties(this,

        /** @lends dat.gui.GUI.prototype */
        {

          /**
           * The parent <code>GUI</code>
           * @type dat.gui.GUI
           */
          parent: {
            get: function() {
              return params.parent;
            }
          },

          scrollable: {
            get: function() {
              return params.scrollable;
            }
          },

          /**
           * Handles <code>GUI</code>'s element placement for you
           * @type Boolean
           */
          autoPlace: {
            get: function() {
              return params.autoPlace;
            }
          },

          /**
           * The identifier for a set of saved values
           * @type String
           */
          preset: {

            get: function() {
              if (_this.parent) {
                return _this.getRoot().preset;
              } else {
                return params.load.preset;
              }
            },

            set: function(v) {
              if (_this.parent) {
                _this.getRoot().preset = v;
              } else {
                params.load.preset = v;
              }
              setPresetSelectIndex(this);
              _this.revert();
            }

          },

          /**
           * The width of <code>GUI</code> element
           * @type Number
           */
          width: {
            get: function() {
              return params.width;
            },
            set: function(v) {
              params.width = v;
              setWidth(_this, v);
            }
          },

          /**
           * The name of <code>GUI</code>. Used for folders. i.e
           * a folder's name
           * @type String
           */
          name: {
            get: function() {
              return params.name;
            },
            set: function(v) {
              // TODO Check for collisions among sibling folders
              params.name = v;
              if (title_row_name) {
                title_row_name.innerHTML = params.name;
              }
            }
          },

          /**
           * Whether the <code>GUI</code> is collapsed or not
           * @type Boolean
           */
          closed: {
            get: function() {
              return params.closed;
            },
            set: function(v) {
              params.closed = v;
              if (params.closed) {
                dom.addClass(_this.__ul, GUI.CLASS_CLOSED);
              } else {
                dom.removeClass(_this.__ul, GUI.CLASS_CLOSED);
              }
              // For browsers that aren't going to respect the CSS transition,
              // Lets just check our height against the window height right off
              // the bat.
              this.onResize();

              if (_this.__closeButton) {
                _this.__closeButton.innerHTML = v ? GUI.TEXT_OPEN : GUI.TEXT_CLOSED;
              }
            }
          },

          /**
           * Contains all presets
           * @type Object
           */
          load: {
            get: function() {
              return params.load;
            }
          },

          /**
           * Determines whether or not to use <a href="https://developer.mozilla.org/en/DOM/Storage#localStorage">localStorage</a> as the means for
           * <code>remember</code>ing
           * @type Boolean
           */
          useLocalStorage: {

            get: function() {
              return use_local_storage;
            },
            set: function(bool) {
              if (SUPPORTS_LOCAL_STORAGE) {
                use_local_storage = bool;
                if (bool) {
                  dom.bind(window, 'unload', saveToLocalStorage);
                } else {
                  dom.unbind(window, 'unload', saveToLocalStorage);
                }
                localStorage.setItem(getLocalStorageHash(_this, 'isLocal'), bool);
              }
            }

          }

        });

    // Are we a root level GUI?
    if (common.isUndefined(params.parent)) {

      params.closed = false;

      dom.addClass(this.domElement, GUI.CLASS_MAIN);
      dom.makeSelectable(this.domElement, false);

      // Are we supposed to be loading locally?
      if (SUPPORTS_LOCAL_STORAGE) {

        if (use_local_storage) {

          _this.useLocalStorage = true;

          var saved_gui = localStorage.getItem(getLocalStorageHash(this, 'gui'));

          if (saved_gui) {
            params.load = JSON.parse(saved_gui);
          }

        }

      }

      this.__closeButton = document.createElement('div');
      this.__closeButton.innerHTML = GUI.TEXT_CLOSED;
      dom.addClass(this.__closeButton, GUI.CLASS_CLOSE_BUTTON);
      this.domElement.appendChild(this.__closeButton);

      dom.bind(this.__closeButton, 'click', function() {

        _this.closed = !_this.closed;


      });


      // Oh, you're a nested GUI!
    } else {

      if (params.closed === undefined) {
        params.closed = true;
      }

      var title_row_name = document.createTextNode(params.name);
      dom.addClass(title_row_name, 'controller-name');

      var title_row = addRow(_this, title_row_name);

      var on_click_title = function(e) {
        e.preventDefault();
        _this.closed = !_this.closed;
        return false;
      };

      dom.addClass(this.__ul, GUI.CLASS_CLOSED);

      dom.addClass(title_row, 'title');
      dom.bind(title_row, 'click', on_click_title);

      if (!params.closed) {
        this.closed = false;
      }

    }

    if (params.autoPlace) {

      if (common.isUndefined(params.parent)) {

        if (auto_place_virgin) {
          auto_place_container = document.createElement('div');
          dom.addClass(auto_place_container, CSS_NAMESPACE);
          dom.addClass(auto_place_container, GUI.CLASS_AUTO_PLACE_CONTAINER);
          document.body.appendChild(auto_place_container);
          auto_place_virgin = false;
        }

        // Put it in the dom for you.
        auto_place_container.appendChild(this.domElement);

        // Apply the auto styles
        dom.addClass(this.domElement, GUI.CLASS_AUTO_PLACE);

      }


      // Make it not elastic.
      if (!this.parent) setWidth(_this, params.width);

    }

    dom.bind(window, 'resize', function() { _this.onResize() });
    dom.bind(this.__ul, 'webkitTransitionEnd', function() { _this.onResize(); });
    dom.bind(this.__ul, 'transitionend', function() { _this.onResize() });
    dom.bind(this.__ul, 'oTransitionEnd', function() { _this.onResize() });
    this.onResize();


    if (params.resizable) {
      addResizeHandle(this);
    }

    saveToLocalStorage = function () {
      if (SUPPORTS_LOCAL_STORAGE && localStorage.getItem(getLocalStorageHash(_this, 'isLocal')) === 'true') {
        localStorage.setItem(getLocalStorageHash(_this, 'gui'), JSON.stringify(_this.getSaveObject()));
      }
    }

    // expose this method publicly
    this.saveToLocalStorageIfPossible = saveToLocalStorage;

    var root = _this.getRoot();
    function resetWidth() {
	      var root = _this.getRoot();
	      root.width += 1;
	      common.defer(function() {
	        root.width -= 1;
	      });
	    }

	    if (!params.parent) {
	      resetWidth();
	    }

  };

  GUI.toggleHide = function() {

    hide = !hide;
    common.each(hideable_guis, function(gui) {
      gui.domElement.style.zIndex = hide ? -999 : 999;
      gui.domElement.style.opacity = hide ? 0 : 1;
    });
  };

  GUI.CLASS_AUTO_PLACE = 'a';
  GUI.CLASS_AUTO_PLACE_CONTAINER = 'ac';
  GUI.CLASS_MAIN = 'main';
  GUI.CLASS_CONTROLLER_ROW = 'cr';
  GUI.CLASS_TOO_TALL = 'taller-than-window';
  GUI.CLASS_CLOSED = 'closed';
  GUI.CLASS_CLOSE_BUTTON = 'close-button';
  GUI.CLASS_DRAG = 'drag';

  GUI.DEFAULT_WIDTH = 245;
  GUI.TEXT_CLOSED = 'Close Controls';
  GUI.TEXT_OPEN = 'Open Controls';

  dom.bind(window, 'keydown', function(e) {

    if (document.activeElement.type !== 'text' &&
        (e.which === HIDE_KEY_CODE || e.keyCode == HIDE_KEY_CODE)) {
      GUI.toggleHide();
    }

  }, false);

  common.extend(

      GUI.prototype,

      /** @lends dat.gui.GUI */
      {

        /**
         * @param object
         * @param property
         * @returns {dat.controllers.Controller} The new controller that was added.
         * @instance
         */
        add: function(object, property) {

          return add(
              this,
              object,
              property,
              {
                factoryArgs: Array.prototype.slice.call(arguments, 2)
              }
          );

        },

        /**
         * @param object
         * @param property
         * @returns {dat.controllers.ColorController} The new controller that was added.
         * @instance
         */
        addColor: function(object, property) {

          return add(
              this,
              object,
              property,
              {
                color: true
              }
          );

        },

        /**
         * @param controller
         * @instance
         */
        remove: function(controller) {

          // TODO listening?
          this.__ul.removeChild(controller.__li);
          this.__controllers.slice(this.__controllers.indexOf(controller), 1);
          var _this = this;
          common.defer(function() {
            _this.onResize();
          });

        },

        destroy: function() {

          if (this.autoPlace) {
            auto_place_container.removeChild(this.domElement);
          }

        },

        /**
         * @param name
         * @returns {dat.gui.GUI} The new folder.
         * @throws {Error} if this GUI already has a folder by the specified
         * name
         * @instance
         */
        addFolder: function(name) {

          // We have to prevent collisions on names in order to have a key
          // by which to remember saved values
          if (this.__folders[name] !== undefined) {
            throw new Error('You already have a folder in this GUI by the' +
                ' name "' + name + '"');
          }

          var new_gui_params = { name: name, parent: this };

          // We need to pass down the autoPlace trait so that we can
          // attach event listeners to open/close folder actions to
          // ensure that a scrollbar appears if the window is too short.
          new_gui_params.autoPlace = this.autoPlace;

          // Do we have saved appearance data for this folder?

          if (this.load && // Anything loaded?
              this.load.folders && // Was my parent a dead-end?
              this.load.folders[name]) { // Did daddy remember me?

            // Start me closed if I was closed
            new_gui_params.closed = this.load.folders[name].closed;

            // Pass down the loaded data
            new_gui_params.load = this.load.folders[name];

          }

          var gui = new GUI(new_gui_params);
          this.__folders[name] = gui;

          var li = addRow(this, gui.domElement);
          dom.addClass(li, 'folder');
          return gui;

        },

        open: function() {
          this.closed = false;
        },

        close: function() {
          this.closed = true;
        },

        onResize: function() {

          var root = this.getRoot();

          if (root.scrollable) {

            var top = dom.getOffset(root.__ul).top;
            var h = 0;

            common.each(root.__ul.childNodes, function(node) {
              if (! (root.autoPlace && node === root.__save_row))
                h += dom.getHeight(node);
            });

            if (window.innerHeight - top - CLOSE_BUTTON_HEIGHT < h) {
              dom.addClass(root.domElement, GUI.CLASS_TOO_TALL);
              root.__ul.style.height = window.innerHeight - top - CLOSE_BUTTON_HEIGHT + 'px';
            } else {
              dom.removeClass(root.domElement, GUI.CLASS_TOO_TALL);
              root.__ul.style.height = 'auto';
            }

          }

          if (root.__resize_handle) {
            common.defer(function() {
              root.__resize_handle.style.height = root.__ul.offsetHeight + 'px';
            });
          }

          if (root.__closeButton) {
            root.__closeButton.style.width = root.width + 'px';
          }

        },

        /**
         * Mark objects for saving. The order of these objects cannot change as
         * the GUI grows. When remembering new objects, append them to the end
         * of the list.
         *
         * @param {Object...} objects
         * @throws {Error} if not called on a top level GUI.
         * @instance
         */
        remember: function() {

          if (common.isUndefined(SAVE_DIALOGUE)) {
            SAVE_DIALOGUE = new CenteredDiv();
            SAVE_DIALOGUE.domElement.innerHTML = saveDialogueContents;
          }

          if (this.parent) {
            throw new Error("You can only call remember on a top level GUI.");
          }

          var _this = this;

          common.each(Array.prototype.slice.call(arguments), function(object) {
            if (_this.__rememberedObjects.length == 0) {
              addSaveMenu(_this);
            }
            if (_this.__rememberedObjects.indexOf(object) == -1) {
              _this.__rememberedObjects.push(object);
            }
          });

          if (this.autoPlace) {
            // Set save row width
            setWidth(this, this.width);
          }

        },

        /**
         * @returns {dat.gui.GUI} the topmost parent GUI of a nested GUI.
         * @instance
         */
        getRoot: function() {
          var gui = this;
          while (gui.parent) {
            gui = gui.parent;
          }
          return gui;
        },

        /**
         * @returns {Object} a JSON object representing the current state of
         * this GUI as well as its remembered properties.
         * @instance
         */
        getSaveObject: function() {

          var toReturn = this.load;

          toReturn.closed = this.closed;

          // Am I remembering any values?
          if (this.__rememberedObjects.length > 0) {

            toReturn.preset = this.preset;

            if (!toReturn.remembered) {
              toReturn.remembered = {};
            }

            toReturn.remembered[this.preset] = getCurrentPreset(this);

          }

          toReturn.folders = {};
          common.each(this.__folders, function(element, key) {
            toReturn.folders[key] = element.getSaveObject();
          });

          return toReturn;

        },

        save: function() {

          if (!this.load.remembered) {
            this.load.remembered = {};
          }

          this.load.remembered[this.preset] = getCurrentPreset(this);
          markPresetModified(this, false);
          this.saveToLocalStorageIfPossible();

        },

        saveAs: function(presetName) {

          if (!this.load.remembered) {

            // Retain default values upon first save
            this.load.remembered = {};
            this.load.remembered[DEFAULT_DEFAULT_PRESET_NAME] = getCurrentPreset(this, true);

          }

          this.load.remembered[presetName] = getCurrentPreset(this);
          this.preset = presetName;
          addPresetOption(this, presetName, true);
          this.saveToLocalStorageIfPossible();

        },

        revert: function(gui) {

          common.each(this.__controllers, function(controller) {
            // Make revert work on Default.
            if (!this.getRoot().load.remembered) {
              controller.setValue(controller.initialValue);
            } else {
              recallSavedValue(gui || this.getRoot(), controller);
            }
          }, this);

          common.each(this.__folders, function(folder) {
            folder.revert(folder);
          });

          if (!gui) {
            markPresetModified(this.getRoot(), false);
          }


        },

        listen: function(controller) {

          var init = this.__listening.length == 0;
          this.__listening.push(controller);
          if (init) updateDisplays(this.__listening);

        }

      }

  );

  function add(gui, object, property, params) {

    if (object[property] === undefined) {
      throw new Error("Object " + object + " has no property \"" + property + "\"");
    }

    var controller;

    if (params.color) {

      controller = new ColorController(object, property);

    } else {

      var factoryArgs = [object,property].concat(params.factoryArgs);
      controller = controllerFactory.apply(gui, factoryArgs);

    }

    if (params.before instanceof Controller) {
      params.before = params.before.__li;
    }

    recallSavedValue(gui, controller);

    dom.addClass(controller.domElement, 'c');

    var name = document.createElement('span');
    dom.addClass(name, 'property-name');
    name.innerHTML = controller.property;

    var container = document.createElement('div');
    container.appendChild(name);
    container.appendChild(controller.domElement);

    var li = addRow(gui, container, params.before);

    dom.addClass(li, GUI.CLASS_CONTROLLER_ROW);
    dom.addClass(li, typeof controller.getValue());

    augmentController(gui, li, controller);

    gui.__controllers.push(controller);

    return controller;

  }

  /**
   * Add a row to the end of the GUI or before another row.
   *
   * @param gui
   * @param [dom] If specified, inserts the dom content in the new row
   * @param [liBefore] If specified, places the new row before another row
   */
  function addRow(gui, dom, liBefore) {
    var li = document.createElement('li');
    if (dom) li.appendChild(dom);
    if (liBefore) {
      gui.__ul.insertBefore(li, params.before);
    } else {
      gui.__ul.appendChild(li);
    }
    gui.onResize();
    return li;
  }

  function augmentController(gui, li, controller) {

    controller.__li = li;
    controller.__gui = gui;

    common.extend(controller, {

      options: function(options) {

        if (arguments.length > 1) {
          controller.remove();

          return add(
              gui,
              controller.object,
              controller.property,
              {
                before: controller.__li.nextElementSibling,
                factoryArgs: [common.toArray(arguments)]
              }
          );

        }

        if (common.isArray(options) || common.isObject(options)) {
          controller.remove();

          return add(
              gui,
              controller.object,
              controller.property,
              {
                before: controller.__li.nextElementSibling,
                factoryArgs: [options]
              }
          );

        }

      },

      name: function(v) {
        controller.__li.firstElementChild.firstElementChild.innerHTML = v;
        return controller;
      },

      listen: function() {
        controller.__gui.listen(controller);
        return controller;
      },

      remove: function() {
        controller.__gui.remove(controller);
        return controller;
      }

    });

    // All sliders should be accompanied by a box.
    if (controller instanceof NumberControllerSlider) {

      var box = new NumberControllerBox(controller.object, controller.property,
          { min: controller.__min, max: controller.__max, step: controller.__step });

      common.each(['updateDisplay', 'onChange', 'onFinishChange'], function(method) {
        var pc = controller[method];
        var pb = box[method];
        controller[method] = box[method] = function() {
          var args = Array.prototype.slice.call(arguments);
          pc.apply(controller, args);
          return pb.apply(box, args);
        }
      });

      dom.addClass(li, 'has-slider');
      controller.domElement.insertBefore(box.domElement, controller.domElement.firstElementChild);

    }
    else if (controller instanceof NumberControllerBox) {

      var r = function(returned) {

        // Have we defined both boundaries?
        if (common.isNumber(controller.__min) && common.isNumber(controller.__max)) {

          // Well, then lets just replace this with a slider.
          controller.remove();
          return add(
              gui,
              controller.object,
              controller.property,
              {
                before: controller.__li.nextElementSibling,
                factoryArgs: [controller.__min, controller.__max, controller.__step]
              });

        }

        return returned;

      };

      controller.min = common.compose(r, controller.min);
      controller.max = common.compose(r, controller.max);

    }
    else if (controller instanceof BooleanController) {

      dom.bind(li, 'click', function() {
        dom.fakeEvent(controller.__checkbox, 'click');
      });

      dom.bind(controller.__checkbox, 'click', function(e) {
        e.stopPropagation(); // Prevents double-toggle
      })

    }
    else if (controller instanceof FunctionController) {

      dom.bind(li, 'click', function() {
        dom.fakeEvent(controller.__button, 'click');
      });

      dom.bind(li, 'mouseover', function() {
        dom.addClass(controller.__button, 'hover');
      });

      dom.bind(li, 'mouseout', function() {
        dom.removeClass(controller.__button, 'hover');
      });

    }
    else if (controller instanceof ColorController) {

      dom.addClass(li, 'color');
      controller.updateDisplay = common.compose(function(r) {
        li.style.borderLeftColor = controller.__color.toString();
        return r;
      }, controller.updateDisplay);

      controller.updateDisplay();

    }

    controller.setValue = common.compose(function(r) {
      if (gui.getRoot().__preset_select && controller.isModified()) {
        markPresetModified(gui.getRoot(), true);
      }
      return r;
    }, controller.setValue);

  }

  function recallSavedValue(gui, controller) {

    // Find the topmost GUI, that's where remembered objects live.
    var root = gui.getRoot();

    // Does the object we're controlling match anything we've been told to
    // remember?
    var matched_index = root.__rememberedObjects.indexOf(controller.object);

    // Why yes, it does!
    if (matched_index != -1) {

      // Let me fetch a map of controllers for thcommon.isObject.
      var controller_map =
          root.__rememberedObjectIndecesToControllers[matched_index];

      // Ohp, I believe this is the first controller we've created for this
      // object. Lets make the map fresh.
      if (controller_map === undefined) {
        controller_map = {};
        root.__rememberedObjectIndecesToControllers[matched_index] =
            controller_map;
      }

      // Keep track of this controller
      controller_map[controller.property] = controller;

      // Okay, now have we saved any values for this controller?
      if (root.load && root.load.remembered) {

        var preset_map = root.load.remembered;

        // Which preset are we trying to load?
        var preset;

        if (preset_map[gui.preset]) {

          preset = preset_map[gui.preset];

        } else if (preset_map[DEFAULT_DEFAULT_PRESET_NAME]) {

          // Uhh, you can have the default instead?
          preset = preset_map[DEFAULT_DEFAULT_PRESET_NAME];

        } else {

          // Nada.

          return;

        }


        // Did the loaded object remember thcommon.isObject?
        if (preset[matched_index] &&

          // Did we remember this particular property?
            preset[matched_index][controller.property] !== undefined) {

          // We did remember something for this guy ...
          var value = preset[matched_index][controller.property];

          // And that's what it is.
          controller.initialValue = value;
          controller.setValue(value);

        }

      }

    }

  }

  function getLocalStorageHash(gui, key) {
    // TODO how does this deal with multiple GUI's?
    return document.location.href + '.' + key;

  }

  function addSaveMenu(gui) {

    var div = gui.__save_row = document.createElement('li');

    dom.addClass(gui.domElement, 'has-save');

    gui.__ul.insertBefore(div, gui.__ul.firstChild);

    dom.addClass(div, 'save-row');

    var gears = document.createElement('span');
    gears.innerHTML = '&nbsp;';
    dom.addClass(gears, 'button gears');

    // TODO replace with FunctionController
    var button = document.createElement('span');
    button.innerHTML = 'Save';
    dom.addClass(button, 'button');
    dom.addClass(button, 'save');

    var button2 = document.createElement('span');
    button2.innerHTML = 'New';
    dom.addClass(button2, 'button');
    dom.addClass(button2, 'save-as');

    var button3 = document.createElement('span');
    button3.innerHTML = 'Revert';
    dom.addClass(button3, 'button');
    dom.addClass(button3, 'revert');

    var select = gui.__preset_select = document.createElement('select');

    if (gui.load && gui.load.remembered) {

      common.each(gui.load.remembered, function(value, key) {
        addPresetOption(gui, key, key == gui.preset);
      });

    } else {
      addPresetOption(gui, DEFAULT_DEFAULT_PRESET_NAME, false);
    }

    dom.bind(select, 'change', function() {


      for (var index = 0; index < gui.__preset_select.length; index++) {
        gui.__preset_select[index].innerHTML = gui.__preset_select[index].value;
      }

      gui.preset = this.value;

    });

    div.appendChild(select);
    div.appendChild(gears);
    div.appendChild(button);
    div.appendChild(button2);
    div.appendChild(button3);

    if (SUPPORTS_LOCAL_STORAGE) {

      var saveLocally = document.getElementById('dg-save-locally');
      var explain = document.getElementById('dg-local-explain');

      saveLocally.style.display = 'block';

      var localStorageCheckBox = document.getElementById('dg-local-storage');

      if (localStorage.getItem(getLocalStorageHash(gui, 'isLocal')) === 'true') {
        localStorageCheckBox.setAttribute('checked', 'checked');
      }

      function showHideExplain() {
        explain.style.display = gui.useLocalStorage ? 'block' : 'none';
      }

      showHideExplain();

      // TODO: Use a boolean controller, fool!
      dom.bind(localStorageCheckBox, 'change', function() {
        gui.useLocalStorage = !gui.useLocalStorage;
        showHideExplain();
      });

    }

    var newConstructorTextArea = document.getElementById('dg-new-constructor');

    dom.bind(newConstructorTextArea, 'keydown', function(e) {
      if (e.metaKey && (e.which === 67 || e.keyCode == 67)) {
        SAVE_DIALOGUE.hide();
      }
    });

    dom.bind(gears, 'click', function() {
      newConstructorTextArea.innerHTML = JSON.stringify(gui.getSaveObject(), undefined, 2);
      SAVE_DIALOGUE.show();
      newConstructorTextArea.focus();
      newConstructorTextArea.select();
    });

    dom.bind(button, 'click', function() {
      gui.save();
    });

    dom.bind(button2, 'click', function() {
      var presetName = prompt('Enter a new preset name.');
      if (presetName) gui.saveAs(presetName);
    });

    dom.bind(button3, 'click', function() {
      gui.revert();
    });

//    div.appendChild(button2);

  }

  function addResizeHandle(gui) {

    gui.__resize_handle = document.createElement('div');

    common.extend(gui.__resize_handle.style, {

      width: '6px',
      marginLeft: '-3px',
      height: '200px',
      cursor: 'ew-resize',
      position: 'absolute'
//      border: '1px solid blue'

    });

    var pmouseX;

    dom.bind(gui.__resize_handle, 'mousedown', dragStart);
    dom.bind(gui.__closeButton, 'mousedown', dragStart);

    gui.domElement.insertBefore(gui.__resize_handle, gui.domElement.firstElementChild);

    function dragStart(e) {

      e.preventDefault();

      pmouseX = e.clientX;

      dom.addClass(gui.__closeButton, GUI.CLASS_DRAG);
      dom.bind(window, 'mousemove', drag);
      dom.bind(window, 'mouseup', dragStop);

      return false;

    }

    function drag(e) {

      e.preventDefault();

      gui.width += pmouseX - e.clientX;
      gui.onResize();
      pmouseX = e.clientX;

      return false;

    }

    function dragStop() {

      dom.removeClass(gui.__closeButton, GUI.CLASS_DRAG);
      dom.unbind(window, 'mousemove', drag);
      dom.unbind(window, 'mouseup', dragStop);

    }

  }

  function setWidth(gui, w) {
    gui.domElement.style.width = w + 'px';
    // Auto placed save-rows are position fixed, so we have to
    // set the width manually if we want it to bleed to the edge
    if (gui.__save_row && gui.autoPlace) {
      gui.__save_row.style.width = w + 'px';
    }if (gui.__closeButton) {
      gui.__closeButton.style.width = w + 'px';
    }
  }

  function getCurrentPreset(gui, useInitialValues) {

    var toReturn = {};

    // For each object I'm remembering
    common.each(gui.__rememberedObjects, function(val, index) {

      var saved_values = {};

      // The controllers I've made for thcommon.isObject by property
      var controller_map =
          gui.__rememberedObjectIndecesToControllers[index];

      // Remember each value for each property
      common.each(controller_map, function(controller, property) {
        saved_values[property] = useInitialValues ? controller.initialValue : controller.getValue();
      });

      // Save the values for thcommon.isObject
      toReturn[index] = saved_values;

    });

    return toReturn;

  }

  function addPresetOption(gui, name, setSelected) {
    var opt = document.createElement('option');
    opt.innerHTML = name;
    opt.value = name;
    gui.__preset_select.appendChild(opt);
    if (setSelected) {
      gui.__preset_select.selectedIndex = gui.__preset_select.length - 1;
    }
  }

  function setPresetSelectIndex(gui) {
    for (var index = 0; index < gui.__preset_select.length; index++) {
      if (gui.__preset_select[index].value == gui.preset) {
        gui.__preset_select.selectedIndex = index;
      }
    }
  }

  function markPresetModified(gui, modified) {
    var opt = gui.__preset_select[gui.__preset_select.selectedIndex];
//    console.log('mark', modified, opt);
    if (modified) {
      opt.innerHTML = opt.value + "*";
    } else {
      opt.innerHTML = opt.value;
    }
  }

  function updateDisplays(controllerArray) {


    if (controllerArray.length != 0) {

      requestAnimationFrame(function() {
        updateDisplays(controllerArray);
      });

    }

    common.each(controllerArray, function(c) {
      c.updateDisplay();
    });

  }

  return GUI;

})(dat.utils.css,
"<div id=\"dg-save\" class=\"dg dialogue\">\n\n  Here's the new load parameter for your <code>GUI</code>'s constructor:\n\n  <textarea id=\"dg-new-constructor\"></textarea>\n\n  <div id=\"dg-save-locally\">\n\n    <input id=\"dg-local-storage\" type=\"checkbox\"/> Automatically save\n    values to <code>localStorage</code> on exit.\n\n    <div id=\"dg-local-explain\">The values saved to <code>localStorage</code> will\n      override those passed to <code>dat.GUI</code>'s constructor. This makes it\n      easier to work incrementally, but <code>localStorage</code> is fragile,\n      and your friends may not see the same values you do.\n      \n    </div>\n    \n  </div>\n\n</div>",
".dg {\n  /** Clear list styles */\n  /* Auto-place container */\n  /* Auto-placed GUI's */\n  /* Line items that don't contain folders. */\n  /** Folder names */\n  /** Hides closed items */\n  /** Controller row */\n  /** Name-half (left) */\n  /** Controller-half (right) */\n  /** Controller placement */\n  /** Shorter number boxes when slider is present. */\n  /** Ensure the entire boolean and function row shows a hand */ }\n  .dg ul {\n    list-style: none;\n    margin: 0;\n    padding: 0;\n    width: 100%;\n    clear: both; }\n  .dg.ac {\n    position: fixed;\n    top: 0;\n    left: 0;\n    right: 0;\n    height: 0;\n    z-index: 0; }\n  .dg:not(.ac) .main {\n    /** Exclude mains in ac so that we don't hide close button */\n    overflow: hidden; }\n  .dg.main {\n    -webkit-transition: opacity 0.1s linear;\n    -o-transition: opacity 0.1s linear;\n    -moz-transition: opacity 0.1s linear;\n    transition: opacity 0.1s linear; }\n    .dg.main.taller-than-window {\n      overflow-y: auto; }\n      .dg.main.taller-than-window .close-button {\n        opacity: 1;\n        /* TODO, these are style notes */\n        margin-top: -1px;\n        border-top: 1px solid #2c2c2c; }\n    .dg.main ul.closed .close-button {\n      opacity: 1 !important; }\n    .dg.main:hover .close-button,\n    .dg.main .close-button.drag {\n      opacity: 1; }\n    .dg.main .close-button {\n      /*opacity: 0;*/\n      -webkit-transition: opacity 0.1s linear;\n      -o-transition: opacity 0.1s linear;\n      -moz-transition: opacity 0.1s linear;\n      transition: opacity 0.1s linear;\n      border: 0;\n      position: absolute;\n      line-height: 19px;\n      height: 20px;\n      /* TODO, these are style notes */\n      cursor: pointer;\n      text-align: center;\n      background-color: #000; }\n      .dg.main .close-button:hover {\n        background-color: #111; }\n  .dg.a {\n    float: right;\n    margin-right: 15px;\n    overflow-x: hidden; }\n    .dg.a.has-save > ul {\n      margin-top: 27px; }\n      .dg.a.has-save > ul.closed {\n        margin-top: 0; }\n    .dg.a .save-row {\n      position: fixed;\n      top: 0;\n      z-index: 1002; }\n  .dg li {\n    -webkit-transition: height 0.1s ease-out;\n    -o-transition: height 0.1s ease-out;\n    -moz-transition: height 0.1s ease-out;\n    transition: height 0.1s ease-out; }\n  .dg li:not(.folder) {\n    cursor: auto;\n    height: 27px;\n    line-height: 27px;\n    overflow: hidden;\n    padding: 0 4px 0 5px; }\n  .dg li.folder {\n    padding: 0;\n    border-left: 4px solid rgba(0, 0, 0, 0); }\n  .dg li.title {\n    cursor: pointer;\n    margin-left: -4px; }\n  .dg .closed li:not(.title),\n  .dg .closed ul li,\n  .dg .closed ul li > * {\n    height: 0;\n    overflow: hidden;\n    border: 0; }\n  .dg .cr {\n    clear: both;\n    padding-left: 3px;\n    height: 27px; }\n  .dg .property-name {\n    cursor: default;\n    float: left;\n    clear: left;\n    width: 40%;\n    overflow: hidden;\n    text-overflow: ellipsis; }\n  .dg .c {\n    float: left;\n    width: 60%; }\n  .dg .c input[type=text] {\n    border: 0;\n    margin-top: 4px;\n    padding: 3px;\n    width: 100%;\n    float: right; }\n  .dg .has-slider input[type=text] {\n    width: 30%;\n    /*display: none;*/\n    margin-left: 0; }\n  .dg .slider {\n    float: left;\n    width: 66%;\n    margin-left: -5px;\n    margin-right: 0;\n    height: 19px;\n    margin-top: 4px; }\n  .dg .slider-fg {\n    height: 100%; }\n  .dg .c input[type=checkbox] {\n    margin-top: 9px; }\n  .dg .c select {\n    margin-top: 5px; }\n  .dg .cr.function,\n  .dg .cr.function .property-name,\n  .dg .cr.function *,\n  .dg .cr.boolean,\n  .dg .cr.boolean * {\n    cursor: pointer; }\n  .dg .selector {\n    display: none;\n    position: absolute;\n    margin-left: -9px;\n    margin-top: 23px;\n    z-index: 10; }\n  .dg .c:hover .selector,\n  .dg .selector.drag {\n    display: block; }\n  .dg li.save-row {\n    padding: 0; }\n    .dg li.save-row .button {\n      display: inline-block;\n      padding: 0px 6px; }\n  .dg.dialogue {\n    background-color: #222;\n    width: 460px;\n    padding: 15px;\n    font-size: 13px;\n    line-height: 15px; }\n\n/* TODO Separate style and structure */\n#dg-new-constructor {\n  padding: 10px;\n  color: #222;\n  font-family: Monaco, monospace;\n  font-size: 10px;\n  border: 0;\n  resize: none;\n  box-shadow: inset 1px 1px 1px #888;\n  word-wrap: break-word;\n  margin: 12px 0;\n  display: block;\n  width: 440px;\n  overflow-y: scroll;\n  height: 100px;\n  position: relative; }\n\n#dg-local-explain {\n  display: none;\n  font-size: 11px;\n  line-height: 17px;\n  border-radius: 3px;\n  background-color: #333;\n  padding: 8px;\n  margin-top: 10px; }\n  #dg-local-explain code {\n    font-size: 10px; }\n\n#dat-gui-save-locally {\n  display: none; }\n\n/** Main type */\n.dg {\n  color: #eee;\n  font: 11px 'Lucida Grande', sans-serif;\n  text-shadow: 0 -1px 0 #111;\n  /** Auto place */\n  /* Controller row, <li> */\n  /** Controllers */ }\n  .dg.main {\n    /** Scrollbar */ }\n    .dg.main::-webkit-scrollbar {\n      width: 5px;\n      background: #1a1a1a; }\n    .dg.main::-webkit-scrollbar-corner {\n      height: 0;\n      display: none; }\n    .dg.main::-webkit-scrollbar-thumb {\n      border-radius: 5px;\n      background: #676767; }\n  .dg li:not(.folder) {\n    background: #1a1a1a;\n    border-bottom: 1px solid #2c2c2c; }\n  .dg li.save-row {\n    line-height: 25px;\n    background: #dad5cb;\n    border: 0; }\n    .dg li.save-row select {\n      margin-left: 5px;\n      width: 108px; }\n    .dg li.save-row .button {\n      margin-left: 5px;\n      margin-top: 1px;\n      border-radius: 2px;\n      font-size: 9px;\n      line-height: 7px;\n      padding: 4px 4px 5px 4px;\n      background: #c5bdad;\n      color: #fff;\n      text-shadow: 0 1px 0 #b0a58f;\n      box-shadow: 0 -1px 0 #b0a58f;\n      cursor: pointer; }\n      .dg li.save-row .button.gears {\n        background: #c5bdad url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAANCAYAAAB/9ZQ7AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAQJJREFUeNpiYKAU/P//PwGIC/ApCABiBSAW+I8AClAcgKxQ4T9hoMAEUrxx2QSGN6+egDX+/vWT4e7N82AMYoPAx/evwWoYoSYbACX2s7KxCxzcsezDh3evFoDEBYTEEqycggWAzA9AuUSQQgeYPa9fPv6/YWm/Acx5IPb7ty/fw+QZblw67vDs8R0YHyQhgObx+yAJkBqmG5dPPDh1aPOGR/eugW0G4vlIoTIfyFcA+QekhhHJhPdQxbiAIguMBTQZrPD7108M6roWYDFQiIAAv6Aow/1bFwXgis+f2LUAynwoIaNcz8XNx3Dl7MEJUDGQpx9gtQ8YCueB+D26OECAAQDadt7e46D42QAAAABJRU5ErkJggg==) 2px 1px no-repeat;\n        height: 7px;\n        width: 8px; }\n      .dg li.save-row .button:hover {\n        background-color: #bab19e;\n        box-shadow: 0 -1px 0 #b0a58f; }\n  .dg li.folder {\n    border-bottom: 0; }\n  .dg li.title {\n    padding-left: 16px;\n    background: black url(data:image/gif;base64,R0lGODlhBQAFAJEAAP////Pz8////////yH5BAEAAAIALAAAAAAFAAUAAAIIlI+hKgFxoCgAOw==) 6px 10px no-repeat;\n    cursor: pointer;\n    border-bottom: 1px solid rgba(255, 255, 255, 0.2); }\n  .dg .closed li.title {\n    background-image: url(data:image/gif;base64,R0lGODlhBQAFAJEAAP////Pz8////////yH5BAEAAAIALAAAAAAFAAUAAAIIlGIWqMCbWAEAOw==); }\n  .dg .cr.boolean {\n    border-left: 3px solid #806787; }\n  .dg .cr.function {\n    border-left: 3px solid #e61d5f; }\n  .dg .cr.number {\n    border-left: 3px solid #2fa1d6; }\n    .dg .cr.number input[type=text] {\n      color: #2fa1d6; }\n  .dg .cr.string {\n    border-left: 3px solid #1ed36f; }\n    .dg .cr.string input[type=text] {\n      color: #1ed36f; }\n  .dg .cr.function:hover, .dg .cr.boolean:hover {\n    background: #111; }\n  .dg .c input[type=text] {\n    background: #303030;\n    outline: none; }\n    .dg .c input[type=text]:hover {\n      background: #3c3c3c; }\n    .dg .c input[type=text]:focus {\n      background: #494949;\n      color: #fff; }\n  .dg .c .slider {\n    background: #303030;\n    cursor: ew-resize; }\n  .dg .c .slider-fg {\n    background: #2fa1d6; }\n  .dg .c .slider:hover {\n    background: #3c3c3c; }\n    .dg .c .slider:hover .slider-fg {\n      background: #44abda; }\n",
dat.controllers.factory = (function (OptionController, NumberControllerBox, NumberControllerSlider, StringController, FunctionController, BooleanController, common) {

      return function(object, property) {

        var initialValue = object[property];

        // Providing options?
        if (common.isArray(arguments[2]) || common.isObject(arguments[2])) {
          return new OptionController(object, property, arguments[2]);
        }

        // Providing a map?

        if (common.isNumber(initialValue)) {

          if (common.isNumber(arguments[2]) && common.isNumber(arguments[3])) {

            // Has min and max.
            return new NumberControllerSlider(object, property, arguments[2], arguments[3]);

          } else {

            return new NumberControllerBox(object, property, { min: arguments[2], max: arguments[3] });

          }

        }

        if (common.isString(initialValue)) {
          return new StringController(object, property);
        }

        if (common.isFunction(initialValue)) {
          return new FunctionController(object, property, '');
        }

        if (common.isBoolean(initialValue)) {
          return new BooleanController(object, property);
        }

      }

    })(dat.controllers.OptionController,
dat.controllers.NumberControllerBox,
dat.controllers.NumberControllerSlider,
dat.controllers.StringController = (function (Controller, dom, common) {

  /**
   * @class Provides a text input to alter the string property of an object.
   *
   * @extends dat.controllers.Controller
   *
   * @param {Object} object The object to be manipulated
   * @param {string} property The name of the property to be manipulated
   *
   * @member dat.controllers
   */
  var StringController = function(object, property) {

    StringController.superclass.call(this, object, property);

    var _this = this;

    this.__input = document.createElement('input');
    this.__input.setAttribute('type', 'text');

    dom.bind(this.__input, 'keyup', onChange);
    dom.bind(this.__input, 'change', onChange);
    dom.bind(this.__input, 'blur', onBlur);
    dom.bind(this.__input, 'keydown', function(e) {
      if (e.keyCode === 13) {
        this.blur();
      }
    });
    

    function onChange() {
      _this.setValue(_this.__input.value);
    }

    function onBlur() {
      if (_this.__onFinishChange) {
        _this.__onFinishChange.call(_this, _this.getValue());
      }
    }

    this.updateDisplay();

    this.domElement.appendChild(this.__input);

  };

  StringController.superclass = Controller;

  common.extend(

      StringController.prototype,
      Controller.prototype,

      {

        updateDisplay: function() {
          // Stops the caret from moving on account of:
          // keyup -> setValue -> updateDisplay
          if (!dom.isActive(this.__input)) {
            this.__input.value = this.getValue();
          }
          return StringController.superclass.prototype.updateDisplay.call(this);
        }

      }

  );

  return StringController;

})(dat.controllers.Controller,
dat.dom.dom,
dat.utils.common),
dat.controllers.FunctionController,
dat.controllers.BooleanController,
dat.utils.common),
dat.controllers.Controller,
dat.controllers.BooleanController,
dat.controllers.FunctionController,
dat.controllers.NumberControllerBox,
dat.controllers.NumberControllerSlider,
dat.controllers.OptionController,
dat.controllers.ColorController = (function (Controller, dom, Color, interpret, common) {

  var ColorController = function(object, property) {

    ColorController.superclass.call(this, object, property);

    this.__color = new Color(this.getValue());
    this.__temp = new Color(0);

    var _this = this;

    this.domElement = document.createElement('div');

    dom.makeSelectable(this.domElement, false);

    this.__selector = document.createElement('div');
    this.__selector.className = 'selector';

    this.__saturation_field = document.createElement('div');
    this.__saturation_field.className = 'saturation-field';

    this.__field_knob = document.createElement('div');
    this.__field_knob.className = 'field-knob';
    this.__field_knob_border = '2px solid ';

    this.__hue_knob = document.createElement('div');
    this.__hue_knob.className = 'hue-knob';

    this.__hue_field = document.createElement('div');
    this.__hue_field.className = 'hue-field';

    this.__input = document.createElement('input');
    this.__input.type = 'text';
    this.__input_textShadow = '0 1px 1px ';

    dom.bind(this.__input, 'keydown', function(e) {
      if (e.keyCode === 13) { // on enter
        onBlur.call(this);
      }
    });

    dom.bind(this.__input, 'blur', onBlur);

    dom.bind(this.__selector, 'mousedown', function(e) {

      dom
        .addClass(this, 'drag')
        .bind(window, 'mouseup', function(e) {
          dom.removeClass(_this.__selector, 'drag');
        });

    });

    var value_field = document.createElement('div');

    common.extend(this.__selector.style, {
      width: '122px',
      height: '102px',
      padding: '3px',
      backgroundColor: '#222',
      boxShadow: '0px 1px 3px rgba(0,0,0,0.3)'
    });

    common.extend(this.__field_knob.style, {
      position: 'absolute',
      width: '12px',
      height: '12px',
      border: this.__field_knob_border + (this.__color.v < .5 ? '#fff' : '#000'),
      boxShadow: '0px 1px 3px rgba(0,0,0,0.5)',
      borderRadius: '12px',
      zIndex: 1
    });
    
    common.extend(this.__hue_knob.style, {
      position: 'absolute',
      width: '15px',
      height: '2px',
      borderRight: '4px solid #fff',
      zIndex: 1
    });

    common.extend(this.__saturation_field.style, {
      width: '100px',
      height: '100px',
      border: '1px solid #555',
      marginRight: '3px',
      display: 'inline-block',
      cursor: 'pointer'
    });

    common.extend(value_field.style, {
      width: '100%',
      height: '100%',
      background: 'none'
    });
    
    linearGradient(value_field, 'top', 'rgba(0,0,0,0)', '#000');

    common.extend(this.__hue_field.style, {
      width: '15px',
      height: '100px',
      display: 'inline-block',
      border: '1px solid #555',
      cursor: 'ns-resize'
    });

    hueGradient(this.__hue_field);

    common.extend(this.__input.style, {
      outline: 'none',
//      width: '120px',
      textAlign: 'center',
//      padding: '4px',
//      marginBottom: '6px',
      color: '#fff',
      border: 0,
      fontWeight: 'bold',
      textShadow: this.__input_textShadow + 'rgba(0,0,0,0.7)'
    });

    dom.bind(this.__saturation_field, 'mousedown', fieldDown);
    dom.bind(this.__field_knob, 'mousedown', fieldDown);

    dom.bind(this.__hue_field, 'mousedown', function(e) {
      setH(e);
      dom.bind(window, 'mousemove', setH);
      dom.bind(window, 'mouseup', unbindH);
    });

    function fieldDown(e) {
      setSV(e);
      // document.body.style.cursor = 'none';
      dom.bind(window, 'mousemove', setSV);
      dom.bind(window, 'mouseup', unbindSV);
    }

    function unbindSV() {
      dom.unbind(window, 'mousemove', setSV);
      dom.unbind(window, 'mouseup', unbindSV);
      // document.body.style.cursor = 'default';
    }

    function onBlur() {
      var i = interpret(this.value);
      if (i !== false) {
        _this.__color.__state = i;
        _this.setValue(_this.__color.toOriginal());
      } else {
        this.value = _this.__color.toString();
      }
    }

    function unbindH() {
      dom.unbind(window, 'mousemove', setH);
      dom.unbind(window, 'mouseup', unbindH);
    }

    this.__saturation_field.appendChild(value_field);
    this.__selector.appendChild(this.__field_knob);
    this.__selector.appendChild(this.__saturation_field);
    this.__selector.appendChild(this.__hue_field);
    this.__hue_field.appendChild(this.__hue_knob);

    this.domElement.appendChild(this.__input);
    this.domElement.appendChild(this.__selector);

    this.updateDisplay();

    function setSV(e) {

      e.preventDefault();

      var w = dom.getWidth(_this.__saturation_field);
      var o = dom.getOffset(_this.__saturation_field);
      var s = (e.clientX - o.left + document.body.scrollLeft) / w;
      var v = 1 - (e.clientY - o.top + document.body.scrollTop) / w;

      if (v > 1) v = 1;
      else if (v < 0) v = 0;

      if (s > 1) s = 1;
      else if (s < 0) s = 0;

      _this.__color.v = v;
      _this.__color.s = s;

      _this.setValue(_this.__color.toOriginal());


      return false;

    }

    function setH(e) {

      e.preventDefault();

      var s = dom.getHeight(_this.__hue_field);
      var o = dom.getOffset(_this.__hue_field);
      var h = 1 - (e.clientY - o.top + document.body.scrollTop) / s;

      if (h > 1) h = 1;
      else if (h < 0) h = 0;

      _this.__color.h = h * 360;

      _this.setValue(_this.__color.toOriginal());

      return false;

    }

  };

  ColorController.superclass = Controller;

  common.extend(

      ColorController.prototype,
      Controller.prototype,

      {

        updateDisplay: function() {

          var i = interpret(this.getValue());

          if (i !== false) {

            var mismatch = false;

            // Check for mismatch on the interpreted value.

            common.each(Color.COMPONENTS, function(component) {
              if (!common.isUndefined(i[component]) &&
                  !common.isUndefined(this.__color.__state[component]) &&
                  i[component] !== this.__color.__state[component]) {
                mismatch = true;
                return {}; // break
              }
            }, this);

            // If nothing diverges, we keep our previous values
            // for statefulness, otherwise we recalculate fresh
            if (mismatch) {
              common.extend(this.__color.__state, i);
            }

          }

          common.extend(this.__temp.__state, this.__color.__state);

          this.__temp.a = 1;

          var flip = (this.__color.v < .5 || this.__color.s > .5) ? 255 : 0;
          var _flip = 255 - flip;

          common.extend(this.__field_knob.style, {
            marginLeft: 100 * this.__color.s - 7 + 'px',
            marginTop: 100 * (1 - this.__color.v) - 7 + 'px',
            backgroundColor: this.__temp.toString(),
            border: this.__field_knob_border + 'rgb(' + flip + ',' + flip + ',' + flip +')'
          });

          this.__hue_knob.style.marginTop = (1 - this.__color.h / 360) * 100 + 'px'

          this.__temp.s = 1;
          this.__temp.v = 1;

          linearGradient(this.__saturation_field, 'left', '#fff', this.__temp.toString());

          common.extend(this.__input.style, {
            backgroundColor: this.__input.value = this.__color.toString(),
            color: 'rgb(' + flip + ',' + flip + ',' + flip +')',
            textShadow: this.__input_textShadow + 'rgba(' + _flip + ',' + _flip + ',' + _flip +',.7)'
          });

        }

      }

  );
  
  var vendors = ['-moz-','-o-','-webkit-','-ms-',''];
  
  function linearGradient(elem, x, a, b) {
    elem.style.background = '';
    common.each(vendors, function(vendor) {
      elem.style.cssText += 'background: ' + vendor + 'linear-gradient('+x+', '+a+' 0%, ' + b + ' 100%); ';
    });
  }
  
  function hueGradient(elem) {
    elem.style.background = '';
    elem.style.cssText += 'background: -moz-linear-gradient(top,  #ff0000 0%, #ff00ff 17%, #0000ff 34%, #00ffff 50%, #00ff00 67%, #ffff00 84%, #ff0000 100%);'
    elem.style.cssText += 'background: -webkit-linear-gradient(top,  #ff0000 0%,#ff00ff 17%,#0000ff 34%,#00ffff 50%,#00ff00 67%,#ffff00 84%,#ff0000 100%);'
    elem.style.cssText += 'background: -o-linear-gradient(top,  #ff0000 0%,#ff00ff 17%,#0000ff 34%,#00ffff 50%,#00ff00 67%,#ffff00 84%,#ff0000 100%);'
    elem.style.cssText += 'background: -ms-linear-gradient(top,  #ff0000 0%,#ff00ff 17%,#0000ff 34%,#00ffff 50%,#00ff00 67%,#ffff00 84%,#ff0000 100%);'
    elem.style.cssText += 'background: linear-gradient(top,  #ff0000 0%,#ff00ff 17%,#0000ff 34%,#00ffff 50%,#00ff00 67%,#ffff00 84%,#ff0000 100%);'
  }


  return ColorController;

})(dat.controllers.Controller,
dat.dom.dom,
dat.color.Color = (function (interpret, math, toString, common) {

  var Color = function() {

    this.__state = interpret.apply(this, arguments);

    if (this.__state === false) {
      throw 'Failed to interpret color arguments';
    }

    this.__state.a = this.__state.a || 1;


  };

  Color.COMPONENTS = ['r','g','b','h','s','v','hex','a'];

  common.extend(Color.prototype, {

    toString: function() {
      return toString(this);
    },

    toOriginal: function() {
      return this.__state.conversion.write(this);
    }

  });

  defineRGBComponent(Color.prototype, 'r', 2);
  defineRGBComponent(Color.prototype, 'g', 1);
  defineRGBComponent(Color.prototype, 'b', 0);

  defineHSVComponent(Color.prototype, 'h');
  defineHSVComponent(Color.prototype, 's');
  defineHSVComponent(Color.prototype, 'v');

  Object.defineProperty(Color.prototype, 'a', {

    get: function() {
      return this.__state.a;
    },

    set: function(v) {
      this.__state.a = v;
    }

  });

  Object.defineProperty(Color.prototype, 'hex', {

    get: function() {

      if (!this.__state.space !== 'HEX') {
        this.__state.hex = math.rgb_to_hex(this.r, this.g, this.b);
      }

      return this.__state.hex;

    },

    set: function(v) {

      this.__state.space = 'HEX';
      this.__state.hex = v;

    }

  });

  function defineRGBComponent(target, component, componentHexIndex) {

    Object.defineProperty(target, component, {

      get: function() {

        if (this.__state.space === 'RGB') {
          return this.__state[component];
        }

        recalculateRGB(this, component, componentHexIndex);

        return this.__state[component];

      },

      set: function(v) {

        if (this.__state.space !== 'RGB') {
          recalculateRGB(this, component, componentHexIndex);
          this.__state.space = 'RGB';
        }

        this.__state[component] = v;

      }

    });

  }

  function defineHSVComponent(target, component) {

    Object.defineProperty(target, component, {

      get: function() {

        if (this.__state.space === 'HSV')
          return this.__state[component];

        recalculateHSV(this);

        return this.__state[component];

      },

      set: function(v) {

        if (this.__state.space !== 'HSV') {
          recalculateHSV(this);
          this.__state.space = 'HSV';
        }

        this.__state[component] = v;

      }

    });

  }

  function recalculateRGB(color, component, componentHexIndex) {

    if (color.__state.space === 'HEX') {

      color.__state[component] = math.component_from_hex(color.__state.hex, componentHexIndex);

    } else if (color.__state.space === 'HSV') {

      common.extend(color.__state, math.hsv_to_rgb(color.__state.h, color.__state.s, color.__state.v));

    } else {

      throw 'Corrupted color state';

    }

  }

  function recalculateHSV(color) {

    var result = math.rgb_to_hsv(color.r, color.g, color.b);

    common.extend(color.__state,
        {
          s: result.s,
          v: result.v
        }
    );

    if (!common.isNaN(result.h)) {
      color.__state.h = result.h;
    } else if (common.isUndefined(color.__state.h)) {
      color.__state.h = 0;
    }

  }

  return Color;

})(dat.color.interpret,
dat.color.math = (function () {

  var tmpComponent;

  return {

    hsv_to_rgb: function(h, s, v) {

      var hi = Math.floor(h / 60) % 6;

      var f = h / 60 - Math.floor(h / 60);
      var p = v * (1.0 - s);
      var q = v * (1.0 - (f * s));
      var t = v * (1.0 - ((1.0 - f) * s));
      var c = [
        [v, t, p],
        [q, v, p],
        [p, v, t],
        [p, q, v],
        [t, p, v],
        [v, p, q]
      ][hi];

      return {
        r: c[0] * 255,
        g: c[1] * 255,
        b: c[2] * 255
      };

    },

    rgb_to_hsv: function(r, g, b) {

      var min = Math.min(r, g, b),
          max = Math.max(r, g, b),
          delta = max - min,
          h, s;

      if (max != 0) {
        s = delta / max;
      } else {
        return {
          h: NaN,
          s: 0,
          v: 0
        };
      }

      if (r == max) {
        h = (g - b) / delta;
      } else if (g == max) {
        h = 2 + (b - r) / delta;
      } else {
        h = 4 + (r - g) / delta;
      }
      h /= 6;
      if (h < 0) {
        h += 1;
      }

      return {
        h: h * 360,
        s: s,
        v: max / 255
      };
    },

    rgb_to_hex: function(r, g, b) {
      var hex = this.hex_with_component(0, 2, r);
      hex = this.hex_with_component(hex, 1, g);
      hex = this.hex_with_component(hex, 0, b);
      return hex;
    },

    component_from_hex: function(hex, componentIndex) {
      return (hex >> (componentIndex * 8)) & 0xFF;
    },

    hex_with_component: function(hex, componentIndex, value) {
      return value << (tmpComponent = componentIndex * 8) | (hex & ~ (0xFF << tmpComponent));
    }

  }

})(),
dat.color.toString,
dat.utils.common),
dat.color.interpret,
dat.utils.common),
dat.utils.requestAnimationFrame = (function () {

  /**
   * requirejs version of Paul Irish's RequestAnimationFrame
   * http://paulirish.com/2011/requestanimationframe-for-smart-animating/
   */

  return window.webkitRequestAnimationFrame ||
      window.mozRequestAnimationFrame ||
      window.oRequestAnimationFrame ||
      window.msRequestAnimationFrame ||
      function(callback, element) {

        window.setTimeout(callback, 1000 / 60);

      };
})(),
dat.dom.CenteredDiv = (function (dom, common) {


  var CenteredDiv = function() {

    this.backgroundElement = document.createElement('div');
    common.extend(this.backgroundElement.style, {
      backgroundColor: 'rgba(0,0,0,0.8)',
      top: 0,
      left: 0,
      display: 'none',
      zIndex: '1000',
      opacity: 0,
      WebkitTransition: 'opacity 0.2s linear'
    });

    dom.makeFullscreen(this.backgroundElement);
    this.backgroundElement.style.position = 'fixed';

    this.domElement = document.createElement('div');
    common.extend(this.domElement.style, {
      position: 'fixed',
      display: 'none',
      zIndex: '1001',
      opacity: 0,
      WebkitTransition: '-webkit-transform 0.2s ease-out, opacity 0.2s linear'
    });


    document.body.appendChild(this.backgroundElement);
    document.body.appendChild(this.domElement);

    var _this = this;
    dom.bind(this.backgroundElement, 'click', function() {
      _this.hide();
    });


  };

  CenteredDiv.prototype.show = function() {

    var _this = this;
    


    this.backgroundElement.style.display = 'block';

    this.domElement.style.display = 'block';
    this.domElement.style.opacity = 0;
//    this.domElement.style.top = '52%';
    this.domElement.style.webkitTransform = 'scale(1.1)';

    this.layout();

    common.defer(function() {
      _this.backgroundElement.style.opacity = 1;
      _this.domElement.style.opacity = 1;
      _this.domElement.style.webkitTransform = 'scale(1)';
    });

  };

  CenteredDiv.prototype.hide = function() {

    var _this = this;

    var hide = function() {

      _this.domElement.style.display = 'none';
      _this.backgroundElement.style.display = 'none';

      dom.unbind(_this.domElement, 'webkitTransitionEnd', hide);
      dom.unbind(_this.domElement, 'transitionend', hide);
      dom.unbind(_this.domElement, 'oTransitionEnd', hide);

    };

    dom.bind(this.domElement, 'webkitTransitionEnd', hide);
    dom.bind(this.domElement, 'transitionend', hide);
    dom.bind(this.domElement, 'oTransitionEnd', hide);

    this.backgroundElement.style.opacity = 0;
//    this.domElement.style.top = '48%';
    this.domElement.style.opacity = 0;
    this.domElement.style.webkitTransform = 'scale(1.1)';

  };

  CenteredDiv.prototype.layout = function() {
    this.domElement.style.left = window.innerWidth/2 - dom.getWidth(this.domElement) / 2 + 'px';
    this.domElement.style.top = window.innerHeight/2 - dom.getHeight(this.domElement) / 2 + 'px';
  };
  
  function lockScroll(e) {
    console.log(e);
  }

  return CenteredDiv;

})(dat.dom.dom,
dat.utils.common),
dat.dom.dom,
dat.utils.common);
/* global dat,p2 */

(function(p2){

// shim layer with setTimeout fallback
var requestAnimFrame =  window.requestAnimationFrame       ||
                        window.webkitRequestAnimationFrame ||
                        window.mozRequestAnimationFrame    ||
                        window.oRequestAnimationFrame      ||
                        window.msRequestAnimationFrame     ||
                        function( callback ){
                            window.setTimeout(callback, 1000 / 60);
                        };

var disableSelectionCSS = [
    "-ms-user-select: none",
    "-moz-user-select: -moz-none",
    "-khtml-user-select: none",
    "-webkit-user-select: none",
    "user-select: none"
];

p2.Renderer = Renderer;


/**
 * Base class for rendering a p2 physics scene.
 * @class Renderer
 * @constructor
 * @param {object} scenes One or more scene definitions. See setScene.
 */
function Renderer(scenes, options){
    p2.EventEmitter.call(this);

    options = options || {};

    // Expose globally
    window.app = this;

    var that = this;

    if(scenes.setup){
        // Only one scene given, without name
        scenes = {
            'default': scenes
        };
    } else if(typeof(scenes)==='function'){
        scenes = {
            'default': {
                setup: scenes
            }
        };
    }

    this.scenes = scenes;

    this.state = Renderer.DEFAULT;

    // Bodies to draw
    this.bodies=[];
    this.springs=[];
    this.timeStep = 1/60;
    this.relaxation = p2.Equation.DEFAULT_RELAXATION;
    this.stiffness = p2.Equation.DEFAULT_STIFFNESS;

    this.mouseConstraint = null;
    this.nullBody = new p2.Body();
    this.pickPrecision = 5;

    this.useInterpolatedPositions = true;

    this.drawPoints = [];
    this.drawPointsChangeEvent = { type : "drawPointsChange" };
    this.drawCircleCenter = p2.vec2.create();
    this.drawCirclePoint = p2.vec2.create();
    this.drawCircleChangeEvent = { type : "drawCircleChange" };
    this.drawRectangleChangeEvent = { type : "drawRectangleChange" };
    this.drawRectStart = p2.vec2.create();
    this.drawRectEnd = p2.vec2.create();

    this.stateChangeEvent = { type : "stateChange", state:null };


    // Default collision masks for new shapes
    this.newShapeCollisionMask = 1;
    this.newShapeCollisionGroup = 1;

    // If constraints should be drawn
    this.drawConstraints = false;

    this.stats_sum = 0;
    this.stats_N = 100;
    this.stats_Nsummed = 0;
    this.stats_average = -1;

    this.addedGlobals = [];

    this.settings = {
        tool: Renderer.DEFAULT,
        fullscreen: function(){
            var el = document.body;
            var requestFullscreen = el.requestFullscreen || el.msRequestFullscreen || el.mozRequestFullScreen || el.webkitRequestFullscreen;
            if(requestFullscreen){
                requestFullscreen.call(el);
            }
        },

        'paused [p]': false,
        'manualStep [s]': function(){ that.world.step(that.world.lastTimeStep); },
        fps: 60,
        maxSubSteps: 3,
        gravityX: 0,
        gravityY: -10,
        sleepMode: p2.World.NO_SLEEPING,

        'drawContacts [c]': false,
        'drawAABBs [t]': false,
        drawConstraints: false,

        iterations: 10,
        stiffness: 1000000,
        relaxation: 4,
        tolerance: 0.0001,
    };

    this.init();
    this.resizeToFit();
    this.render();
    this.createStats();
    this.centerCamera(0, 0);

    window.onresize = function(){
        that.resizeToFit();
    };

    this.setUpKeyboard();
    this.setupGUI();

    if(typeof(options.hideGUI) === 'undefined'){
        options.hideGUI = 'auto';
    }
    if((options.hideGUI === 'auto' && window.innerWidth < 600) || options.hideGUI === true){
        this.gui.close();
    }

    this.printConsoleMessage();

    // Set first scene
    this.setSceneByIndex(0);

    this.startRenderingLoop();

}
Renderer.prototype = new p2.EventEmitter();

Renderer.DEFAULT =            1;
Renderer.PANNING =            2;
Renderer.DRAGGING =           3;
Renderer.DRAWPOLYGON =        4;
Renderer.DRAWINGPOLYGON  =    5;
Renderer.DRAWCIRCLE =         6;
Renderer.DRAWINGCIRCLE  =     7;
Renderer.DRAWRECTANGLE =      8;
Renderer.DRAWINGRECTANGLE  =  9;

Renderer.toolStateMap = {
    'pick/pan [q]': Renderer.DEFAULT,
    'polygon [d]': Renderer.DRAWPOLYGON,
    'circle [a]': Renderer.DRAWCIRCLE,
    'rectangle [f]': Renderer.DRAWRECTANGLE
};
Renderer.stateToolMap = {};
for(var key in Renderer.toolStateMap){
    Renderer.stateToolMap[Renderer.toolStateMap[key]] = key;
}

Renderer.keydownEvent = {
    type:"keydown",
    originalEvent : null,
    keyCode : 0,
};
Renderer.keyupEvent = {
    type:"keyup",
    originalEvent : null,
    keyCode : 0,
};

Object.defineProperty(Renderer.prototype, 'drawContacts', {
    get: function() {
        return this.settings['drawContacts [c]'];
    },
    set: function(value) {
        this.settings['drawContacts [c]'] = value;
        this.updateGUI();
    }
});

Object.defineProperty(Renderer.prototype, 'drawAABBs', {
    get: function() {
        return this.settings['drawAABBs [t]'];
    },
    set: function(value) {
        this.settings['drawAABBs [t]'] = value;
        this.updateGUI();
    }
});

Object.defineProperty(Renderer.prototype, 'paused', {
    get: function() {
        return this.settings['paused [p]'];
    },
    set: function(value) {
        this.resetCallTime = true;
        this.settings['paused [p]'] = value;
        this.updateGUI();
    }
});

Renderer.prototype.getDevicePixelRatio = function() {
    return window.devicePixelRatio || 1;
};

Renderer.prototype.printConsoleMessage = function(){
    console.log([
        '=== p2.js v' + p2.version + ' ===',
        'Welcome to the p2.js debugging environment!',
        'Did you know you can interact with the physics here in the console? Try executing the following:',
        '',
        '  world.gravity[1] = 10;',
        ''
    ].join('\n'));
};

Renderer.prototype.resizeToFit = function(){
    var dpr = this.getDevicePixelRatio();
    var rect = this.elementContainer.getBoundingClientRect();
    var w = rect.width * dpr;
    var h = rect.height * dpr;
    this.resize(w, h);
}

/**
 * Sets up dat.gui
 */
Renderer.prototype.setupGUI = function() {
    if(typeof(dat) === 'undefined'){
        return;
    }

    var that = this;

    var gui = this.gui = new dat.GUI();
    gui.domElement.setAttribute('style',disableSelectionCSS.join(';'));

    var settings = this.settings;

    gui.add(settings, 'tool', Renderer.toolStateMap).onChange(function(state){
        that.setState(parseInt(state));
    });
    gui.add(settings, 'fullscreen');

    // World folder
    var worldFolder = gui.addFolder('World');
    worldFolder.open();
    worldFolder.add(settings, 'paused [p]').onChange(function(p){
        that.paused = p;
    });
    worldFolder.add(settings, 'manualStep [s]');
    worldFolder.add(settings, 'fps', 10, 60*10).step(10).onChange(function(freq){
        that.timeStep = 1 / freq;
    });
    worldFolder.add(settings, 'maxSubSteps', 0, 10).step(1);
    var maxg = 100;

    function changeGravity(){
        if(!isNaN(settings.gravityX) && !isNaN(settings.gravityY)){
            p2.vec2.set(that.world.gravity, settings.gravityX, settings.gravityY);
        }
    }
    worldFolder.add(settings, 'gravityX', -maxg, maxg).onChange(changeGravity);
    worldFolder.add(settings, 'gravityY', -maxg, maxg).onChange(changeGravity);
    worldFolder.add(settings, 'sleepMode', {
        NO_SLEEPING: p2.World.NO_SLEEPING,
        BODY_SLEEPING: p2.World.BODY_SLEEPING,
        ISLAND_SLEEPING: p2.World.ISLAND_SLEEPING,
    }).onChange(function(mode){
        that.world.sleepMode = parseInt(mode);
    });

    // Rendering
    var renderingFolder = gui.addFolder('Rendering');
    renderingFolder.open();
    renderingFolder.add(settings,'drawContacts [c]').onChange(function(draw){
        that.drawContacts = draw;
    });
    renderingFolder.add(settings,'drawAABBs [t]').onChange(function(draw){
        that.drawAABBs = draw;
    });

    // Solver
    var solverFolder = gui.addFolder('Solver');
    solverFolder.open();
    solverFolder.add(settings, 'iterations', 1, 100).step(1).onChange(function(it){
        that.world.solver.iterations = it;
    });
    solverFolder.add(settings, 'stiffness', 10).onChange(function(k){
        that.setEquationParameters();
    });
    solverFolder.add(settings, 'relaxation', 0, 20).step(0.1).onChange(function(d){
        that.setEquationParameters();
    });
    solverFolder.add(settings, 'tolerance', 0, 10).step(0.01).onChange(function(t){
        that.world.solver.tolerance = t;
    });

    // Scene picker
    var sceneFolder = gui.addFolder('Scenes');
    sceneFolder.open();

    // Add scenes
    var i = 1;
    for(var sceneName in this.scenes){
        var guiLabel = sceneName + ' [' + (i++) + ']';
        this.settings[guiLabel] = function(){
            that.setScene(that.scenes[sceneName]);
        };
        sceneFolder.add(settings, guiLabel);
    }
};

/**
 * Updates dat.gui. Call whenever you change demo.settings.
 */
Renderer.prototype.updateGUI = function() {
    if(!this.gui){
        return;
    }
    function updateControllers(folder){
        // First level
        for (var i in folder.__controllers){
            folder.__controllers[i].updateDisplay();
        }

        // Second level
        for (var f in folder.__folders){
            updateControllers(folder.__folders[f]);
        }
    }
    updateControllers(this.gui);
};

Renderer.prototype.setWorld = function(world){
    this.world = world;

    window.world = world; // For debugging.

    var that = this;

    world.on("postStep",function(e){
        that.updateStats();
    }).on("addBody",function(e){
        that.addVisual(e.body);
    }).on("removeBody",function(e){
        that.removeVisual(e.body);
    }).on("addSpring",function(e){
        that.addVisual(e.spring);
    }).on("removeSpring",function(e){
        that.removeVisual(e.spring);
    });
};

/**
 * Sets the current scene to the scene definition given.
 * @param {object} sceneDefinition
 * @param {function} sceneDefinition.setup
 * @param {function} [sceneDefinition.teardown]
 */
Renderer.prototype.setScene = function(sceneDefinition){
    if(typeof(sceneDefinition) === 'string'){
        sceneDefinition = this.scenes[sceneDefinition];
    }

    this.removeAllVisuals();
    if(this.currentScene && this.currentScene.teardown){
        this.currentScene.teardown();
    }
    if(this.world){
        this.world.clear();
    }

    for(var i=0; i<this.addedGlobals.length; i++){
        delete window[this.addedGlobals];
    }

    var preGlobalVars = Object.keys(window);

    this.currentScene = sceneDefinition;
    this.world = null;
    sceneDefinition.setup.call(this);
    if(!this.world){
        throw new Error('The .setup function in the scene definition must run this.setWorld(world);');
    }

    var postGlobalVars = Object.keys(window);
    var added = [];
    for(var i = 0; i < postGlobalVars.length; i++){
        if(preGlobalVars.indexOf(postGlobalVars[i]) === -1 && postGlobalVars[i] !== 'world'){
            added.push(postGlobalVars[i]);
        }
    }
    if(added.length){
        added.sort();
        console.log([
            'The following variables were exposed globally from this physics scene.',
            '',
            '  ' + added.join(', '),
            ''
        ].join('\n'));
    }

    this.addedGlobals = added;

    // Set the GUI parameters from the loaded world
    var settings = this.settings;
    settings.iterations = this.world.solver.iterations;
    settings.tolerance = this.world.solver.tolerance;
    settings.gravityX = this.world.gravity[0];
    settings.gravityY = this.world.gravity[1];
    settings.sleepMode = this.world.sleepMode;
    this.updateGUI();
};

/**
 * Set scene by its position in which it was given. Starts at 0.
 * @param {number} index
 */
Renderer.prototype.setSceneByIndex = function(index){
    var i = 0;
    for(var key in this.scenes){
        if(i === index){
            this.setScene(this.scenes[key]);
            break;
        }
        i++;
    }
};

Renderer.elementClass = 'p2-canvas';
Renderer.containerClass = 'p2-container';

/**
 * Adds all needed keyboard callbacks
 */
Renderer.prototype.setUpKeyboard = function() {
    var that = this;

    this.elementContainer.onkeydown = function(e){
        if(!e.keyCode){
            return;
        }
        var s = that.state;
        var ch = String.fromCharCode(e.keyCode);
        switch(ch){
        case "P": // pause
            that.paused = !that.paused;
            break;
        case "S": // step
            that.world.step(that.world.lastTimeStep);
            break;
        case "R": // restart
            that.setScene(that.currentScene);
            break;
        case "C": // toggle draw contacts & constraints
            that.drawContacts = !that.drawContacts;
            that.drawConstraints = !that.drawConstraints;
            break;
        case "T": // toggle draw AABBs
            that.drawAABBs = !that.drawAABBs;
            break;
        case "D": // toggle draw polygon mode
            that.setState(s === Renderer.DRAWPOLYGON ? Renderer.DEFAULT : s = Renderer.DRAWPOLYGON);
            break;
        case "A": // toggle draw circle mode
            that.setState(s === Renderer.DRAWCIRCLE ? Renderer.DEFAULT : s = Renderer.DRAWCIRCLE);
            break;
        case "F": // toggle draw rectangle mode
            that.setState(s === Renderer.DRAWRECTANGLE ? Renderer.DEFAULT : s = Renderer.DRAWRECTANGLE);
            break;
        case "Q": // set default
            that.setState(Renderer.DEFAULT);
            break;
        case "1":
        case "2":
        case "3":
        case "4":
        case "5":
        case "6":
        case "7":
        case "8":
        case "9":
            that.setSceneByIndex(parseInt(ch) - 1);
            break;
        default:
            Renderer.keydownEvent.keyCode = e.keyCode;
            Renderer.keydownEvent.originalEvent = e;
            that.emit(Renderer.keydownEvent);
            break;
        }
        that.updateGUI();
    };

    this.elementContainer.onkeyup = function(e){
        if(e.keyCode){
            switch(String.fromCharCode(e.keyCode)){
            default:
                Renderer.keyupEvent.keyCode = e.keyCode;
                Renderer.keyupEvent.originalEvent = e;
                that.emit(Renderer.keyupEvent);
                break;
            }
        }
    };
};

/**
 * Start the rendering loop
 */
Renderer.prototype.startRenderingLoop = function(){
    var demo = this,
        lastCallTime = Date.now() / 1000;

    function update(){
        if(!demo.paused){
            var now = Date.now() / 1000,
                timeSinceLastCall = now - lastCallTime;
            if(demo.resetCallTime){
                timeSinceLastCall = 0;
                demo.resetCallTime = false;
            }
            lastCallTime = now;
            demo.world.step(demo.timeStep, timeSinceLastCall, demo.settings.maxSubSteps);
        }
        demo.render();
        requestAnimFrame(update);
    }
    requestAnimFrame(update);
};

/**
 * Set the app state.
 * @param {number} state
 */
Renderer.prototype.setState = function(state){
    this.state = state;
    this.stateChangeEvent.state = state;
    this.emit(this.stateChangeEvent);
    if(Renderer.stateToolMap[state]){
        this.settings.tool = state;
        this.updateGUI();
    }
};

/**
 * Should be called by subclasses whenever there's a mousedown event
 */
Renderer.prototype.handleMouseDown = function(physicsPosition){
    switch(this.state){

    case Renderer.DEFAULT:

        // Check if the clicked point overlaps bodies
        var result = this.world.hitTest(physicsPosition, this.world.bodies, this.pickPrecision);

        // Remove static bodies
        var b;
        while(result.length > 0){
            b = result.shift();
            if(b.type === p2.Body.STATIC){
                b = null;
            } else {
                break;
            }
        }

        if(b){
            b.wakeUp();
            this.setState(Renderer.DRAGGING);
            // Add mouse joint to the body
            var localPoint = p2.vec2.create();
            b.toLocalFrame(localPoint,physicsPosition);
            this.world.addBody(this.nullBody);
            this.mouseConstraint = new p2.RevoluteConstraint(this.nullBody, b, {
                localPivotA: physicsPosition,
                localPivotB: localPoint
            });
            this.world.addConstraint(this.mouseConstraint);

            startDrag(this, b)
        } else {
            this.setState(Renderer.PANNING);
        }
        break;

    case Renderer.DRAWPOLYGON:
        // Start drawing a polygon
        this.setState(Renderer.DRAWINGPOLYGON);
        this.drawPoints = [];
        var copy = p2.vec2.create();
        p2.vec2.copy(copy,physicsPosition);
        this.drawPoints.push(copy);
        this.emit(this.drawPointsChangeEvent);
        break;

    case Renderer.DRAWCIRCLE:
        // Start drawing a circle
        this.setState(Renderer.DRAWINGCIRCLE);
        p2.vec2.copy(this.drawCircleCenter,physicsPosition);
        p2.vec2.copy(this.drawCirclePoint, physicsPosition);
        this.emit(this.drawCircleChangeEvent);
        break;

    case Renderer.DRAWRECTANGLE:
        // Start drawing a circle
        this.setState(Renderer.DRAWINGRECTANGLE);
        p2.vec2.copy(this.drawRectStart,physicsPosition);
        p2.vec2.copy(this.drawRectEnd, physicsPosition);
        this.emit(this.drawRectangleChangeEvent);
        break;
    }
};

/**
 * Should be called by subclasses whenever there's a mousedown event
 */
Renderer.prototype.handleMouseMove = function(physicsPosition){
    var sampling = 0.4;
    switch(this.state){
    case Renderer.DEFAULT:
    case Renderer.DRAGGING:
        if(this.mouseConstraint){
            p2.vec2.copy(this.mouseConstraint.pivotA, physicsPosition);
            this.mouseConstraint.bodyA.wakeUp();
            this.mouseConstraint.bodyB.wakeUp();
        }
        break;

    case Renderer.DRAWINGPOLYGON:
        // drawing a polygon - add new point
        var sqdist = p2.vec2.dist(physicsPosition,this.drawPoints[this.drawPoints.length-1]);
        if(sqdist > sampling*sampling){
            var copy = [0,0];
            p2.vec2.copy(copy,physicsPosition);
            this.drawPoints.push(copy);
            this.emit(this.drawPointsChangeEvent);
        }
        break;

    case Renderer.DRAWINGCIRCLE:
        // drawing a circle - change the circle radius point to current
        p2.vec2.copy(this.drawCirclePoint, physicsPosition);
        this.emit(this.drawCircleChangeEvent);
        break;

    case Renderer.DRAWINGRECTANGLE:
        // drawing a rectangle - change the end point to current
        p2.vec2.copy(this.drawRectEnd, physicsPosition);
        this.emit(this.drawRectangleChangeEvent);
        break;
    }
};

/**
 * Should be called by subclasses whenever there's a mouseup event
 */
Renderer.prototype.handleMouseUp = function(physicsPosition){

    var b;

    switch(this.state){

    case Renderer.DEFAULT:
        break;

    case Renderer.DRAGGING:
        stopDrag(this)
        // Drop constraint
        this.world.removeConstraint(this.mouseConstraint);
        this.mouseConstraint = null;
        this.world.removeBody(this.nullBody);
        this.setState(Renderer.DEFAULT);
        break;

    case Renderer.PANNING:
        this.setState(Renderer.DEFAULT);
        break;

    case Renderer.DRAWINGPOLYGON:
        // End this drawing state
        this.setState(Renderer.DRAWPOLYGON);
        if(this.drawPoints.length > 3){
            // Create polygon
            b = new p2.Body({ mass : 1 });
            if(b.fromPolygon(this.drawPoints,{
                removeCollinearPoints : 0.01,
            })){
                this.world.addBody(b);
            }
        }
        this.drawPoints = [];
        this.emit(this.drawPointsChangeEvent);
        break;

    case Renderer.DRAWINGCIRCLE:
        // End this drawing state
        this.setState(Renderer.DRAWCIRCLE);
        var R = p2.vec2.dist(this.drawCircleCenter,this.drawCirclePoint);
        if(R > 0){
            // Create circle
            b = new p2.Body({ mass : 1, position : this.drawCircleCenter });
            var circle = new p2.Circle({ radius: R });
            b.addShape(circle);
            this.world.addBody(b);
        }
        p2.vec2.copy(this.drawCircleCenter,this.drawCirclePoint);
        this.emit(this.drawCircleChangeEvent);
        break;

    case Renderer.DRAWINGRECTANGLE:
        // End this drawing state
        this.setState(Renderer.DRAWRECTANGLE);
        // Make sure first point is upper left
        var start = this.drawRectStart;
        var end = this.drawRectEnd;
        for(var i=0; i<2; i++){
            if(start[i] > end[i]){
                var tmp = end[i];
                end[i] = start[i];
                start[i] = tmp;
            }
        }
        var width = Math.abs(start[0] - end[0]);
        var height = Math.abs(start[1] - end[1]);
        if(width > 0 && height > 0){
            // Create box
            b = new p2.Body({
                mass : 1,
                position : [this.drawRectStart[0] + width*0.5, this.drawRectStart[1] + height*0.5]
            });
            var rectangleShape = new p2.Box({ width: width, height:  height });
            b.addShape(rectangleShape);
            this.world.addBody(b);
        }
        p2.vec2.copy(this.drawRectEnd,this.drawRectStart);
        this.emit(this.drawRectangleChangeEvent);
        break;
    }

    if(b){
        b.wakeUp();
        for(var i=0; i<b.shapes.length; i++){
            var s = b.shapes[i];
            s.collisionMask =  this.newShapeCollisionMask;
            s.collisionGroup = this.newShapeCollisionGroup;
        }
    }
};

/**
 * Update stats
 */
Renderer.prototype.updateStats = function(){
    this.stats_sum += this.world.lastStepTime;
    this.stats_Nsummed++;
    if(this.stats_Nsummed === this.stats_N){
        this.stats_average = this.stats_sum/this.stats_N;
        this.stats_sum = 0.0;
        this.stats_Nsummed = 0;
    }
    /*
    this.stats_stepdiv.innerHTML = "Physics step: "+(Math.round(this.stats_average*100)/100)+"ms";
    this.stats_contactsdiv.innerHTML = "Contacts: "+this.world.narrowphase.contactEquations.length;
    */
};

/**
 * Add an object to the demo
 * @param  {mixed} obj Either Body or Spring
 */
Renderer.prototype.addVisual = function(obj){
    if(obj instanceof p2.LinearSpring){
        this.springs.push(obj);
        this.addRenderable(obj);
    } else if(obj instanceof p2.Body){
        if(obj.shapes.length){ // Only draw things that can be seen
            this.bodies.push(obj);
            this.addRenderable(obj);
        }
    }
};

/**
 * Removes all visuals from the scene
 */
Renderer.prototype.removeAllVisuals = function(){
    var bodies = this.bodies,
        springs = this.springs;
    while(bodies.length){
        this.removeVisual(bodies[bodies.length-1]);
    }
    while(springs.length){
        this.removeVisual(springs[springs.length-1]);
    }
};

/**
 * Remove an object from the demo
 * @param  {mixed} obj Either Body or Spring
 */
Renderer.prototype.removeVisual = function(obj){
    this.removeRenderable(obj);
    if(obj instanceof p2.LinearSpring){
        var idx = this.springs.indexOf(obj);
        if(idx !== -1){
            this.springs.splice(idx,1);
        }
    } else if(obj instanceof p2.Body){
        var idx = this.bodies.indexOf(obj);
        if(idx !== -1){
            this.bodies.splice(idx,1);
        }
    } else {
        console.error("Visual type not recognized...");
    }
};

/**
 * Create the container/divs for stats
 * @todo  integrate in new menu
 */
Renderer.prototype.createStats = function(){
    /*
    var stepDiv = document.createElement("div");
    var vecsDiv = document.createElement("div");
    var matsDiv = document.createElement("div");
    var contactsDiv = document.createElement("div");
    stepDiv.setAttribute("id","step");
    vecsDiv.setAttribute("id","vecs");
    matsDiv.setAttribute("id","mats");
    contactsDiv.setAttribute("id","contacts");
    document.body.appendChild(stepDiv);
    document.body.appendChild(vecsDiv);
    document.body.appendChild(matsDiv);
    document.body.appendChild(contactsDiv);
    this.stats_stepdiv = stepDiv;
    this.stats_contactsdiv = contactsDiv;
    */
};

Renderer.prototype.addLogo = function(){
    var css = [
        'position:absolute',
        'left:10px',
        'top:15px',
        'text-align:center',
        'font: 13px Helvetica, arial, freesans, clean, sans-serif',
    ].concat(disableSelectionCSS);

    var div = document.createElement('div');
    div.innerHTML = [
        "<div style='"+css.join(';')+"' user-select='none'>",
        "<h1 style='margin:0px'><a href='http://github.com/schteppe/p2.js' style='color:black; text-decoration:none;'>p2.js</a></h1>",
        "<p style='margin:5px'>Physics Engine</p>",
        '<a style="color:black; text-decoration:none;" href="https://twitter.com/share" class="twitter-share-button" data-via="schteppe" data-count="none" data-hashtags="p2js">Tweet</a>',
        "</div>"
    ].join("");
    this.elementContainer.appendChild(div);

    // Twitter button script
    !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');
};

Renderer.zoomInEvent = {
    type:"zoomin"
};
Renderer.zoomOutEvent = {
    type:"zoomout"
};

Renderer.prototype.setEquationParameters = function(){
    this.world.setGlobalStiffness(this.settings.stiffness);
    this.world.setGlobalRelaxation(this.settings.relaxation);
};

})(p2);
/* global PIXI,Renderer */

(function(p2){

p2.WebGLRenderer = WebGLRenderer;

var Renderer = p2.Renderer;

/**
 * Renderer using Pixi.js
 * @class WebGLRenderer
 * @constructor
 * @extends Renderer
 * @param {World}   scenes
 * @param {Object}  [options]
 * @param {Number}  [options.lineWidth=0.01]
 * @param {Number}  [options.scrollFactor=0.1]
 * @param {Number}  [options.width]               Num pixels in horizontal direction
 * @param {Number}  [options.height]              Num pixels in vertical direction
 */
function WebGLRenderer(scenes, options){
    options = options || {};

    var that = this;

    var settings = {
        lineWidth : 0.01,
        scrollFactor : 0.1,
        width : 1280, // Pixi screen resolution
        height : 720,
        useDeviceAspect : false,
        sleepOpacity : 0.2,
    };
    for(var key in options){
        settings[key] = options[key];
    }

    if(settings.useDeviceAspect){
        settings.height = window.innerHeight / window.innerWidth * settings.width;
    }

    //this.settings = settings;
    this.lineWidth =            settings.lineWidth;
    this.scrollFactor =         settings.scrollFactor;
    this.sleepOpacity =         settings.sleepOpacity;

    this.sprites = [];
    this.springSprites = [];
    this.debugPolygons = false;

    Renderer.call(this,scenes,options);

    for(var key in settings){
        this.settings[key] = settings[key];
    }

    this.pickPrecision = 0.1;

    // Update "ghost draw line"
    this.on("drawPointsChange",function(e){
        var g = that.drawShapeGraphics;
        var path = that.drawPoints;

        g.clear();

        var path2 = [];
        for(var j=0; j<path.length; j++){
            var v = path[j];
            path2.push([v[0], v[1]]);
        }

        that.drawPath(g,path2,0xff0000,false,that.lineWidth,false);
    });

    // Update draw circle
    this.on("drawCircleChange",function(e){
        var g = that.drawShapeGraphics;
        g.clear();
        var center = that.drawCircleCenter;
        var R = p2.vec2.dist(center, that.drawCirclePoint);
        that.drawCircle(g,center[0], center[1], 0, R,false, that.lineWidth);
    });

    // Update draw circle
    this.on("drawRectangleChange",function(e){
        var g = that.drawShapeGraphics;
        g.clear();
        var start = that.drawRectStart;
        var end = that.drawRectEnd;
        var width = start[0] - end[0];
        var height = start[1] - end[1];
        that.drawRectangle(g, start[0] - width/2, start[1] - height/2, 0, width, height, false, false, that.lineWidth, false);
    });
}
WebGLRenderer.prototype = Object.create(Renderer.prototype);

WebGLRenderer.prototype.stagePositionToPhysics = function(out,stagePosition){
    var x = stagePosition[0],
        y = stagePosition[1];
    p2.vec2.set(out, x, y);
    return out;
};

/**
 * Initialize the renderer and stage
 */
var init_stagePosition = p2.vec2.create(),
    init_physicsPosition = p2.vec2.create();
WebGLRenderer.prototype.init = function(){
    var w = this.w,
        h = this.h,
        s = this.settings;

    var that = this;

    var renderer =  this.renderer =     PIXI.autoDetectRenderer(s.width, s.height, null, null, true);
    var stage =     this.stage =        new PIXI.DisplayObjectContainer();
    var container = this.container =    new PIXI.Stage(0xFFFFFF,true);

    var el = this.element = this.renderer.view;
    el.tabIndex = 1;
    el.classList.add(Renderer.elementClass);
    el.setAttribute('style','width:100%;');

    var div = this.elementContainer = document.createElement('div');
    div.classList.add(Renderer.containerClass);
    div.setAttribute('style','width:100%; height:100%');
    div.appendChild(el);
    document.body.appendChild(div);
    el.focus();
    el.oncontextmenu = function(e){
        return false;
    };

    this.container.addChild(stage);

    // Graphics object for drawing shapes
    this.drawShapeGraphics = new PIXI.Graphics();
    stage.addChild(this.drawShapeGraphics);

    // Graphics object for contacts
    this.contactGraphics = new PIXI.Graphics();
    stage.addChild(this.contactGraphics);

    // Graphics object for AABBs
    this.aabbGraphics = new PIXI.Graphics();
    stage.addChild(this.aabbGraphics);

    stage.scale.x = 200; // Flip Y direction.
    stage.scale.y = -200;

    var lastX, lastY, lastMoveX, lastMoveY, startX, startY, down=false;

    var physicsPosA = p2.vec2.create();
    var physicsPosB = p2.vec2.create();
    var stagePos = p2.vec2.create();
    var initPinchLength = 0;
    var initScaleX = 1;
    var initScaleY = 1;
    var lastNumTouches = 0;
    container.mousedown = container.touchstart = function(e){
        lastMoveX = e.global.x;
        lastMoveY = e.global.y;

        if(e.originalEvent.touches){
            lastNumTouches = e.originalEvent.touches.length;
        }

        if(e.originalEvent.touches && e.originalEvent.touches.length === 2){

            var touchA = that.container.interactionManager.touchs[0];
            var touchB = that.container.interactionManager.touchs[1];

            var pos = touchA.getLocalPosition(stage);
            p2.vec2.set(stagePos, pos.x, pos.y);
            that.stagePositionToPhysics(physicsPosA, stagePos);

            var pos = touchB.getLocalPosition(stage);
            p2.vec2.set(stagePos, pos.x, pos.y);
            that.stagePositionToPhysics(physicsPosB, stagePos);

            initPinchLength = p2.vec2.dist(physicsPosA, physicsPosB);

            var initScaleX = stage.scale.x;
            var initScaleY = stage.scale.y;

            return;
        }
        lastX = e.global.x;
        lastY = e.global.y;
        startX = stage.position.x;
        startY = stage.position.y;
        down = true;

        that.lastMousePos = e.global;

        var pos = e.getLocalPosition(stage);
        p2.vec2.set(init_stagePosition, pos.x, pos.y);
        that.stagePositionToPhysics(init_physicsPosition, init_stagePosition);
        that.handleMouseDown(init_physicsPosition);
    };
    container.mousemove = container.touchmove = function(e){
        if(e.originalEvent.touches){
            if(lastNumTouches !== e.originalEvent.touches.length){
                lastX = e.global.x;
                lastY = e.global.y;
                startX = stage.position.x;
                startY = stage.position.y;
            }

            lastNumTouches = e.originalEvent.touches.length;
        }

        lastMoveX = e.global.x;
        lastMoveY = e.global.y;

        if(e.originalEvent.touches && e.originalEvent.touches.length === 2){
            var touchA = that.container.interactionManager.touchs[0];
            var touchB = that.container.interactionManager.touchs[1];

            var pos = touchA.getLocalPosition(stage);
            p2.vec2.set(stagePos, pos.x, pos.y);
            that.stagePositionToPhysics(physicsPosA, stagePos);

            var pos = touchB.getLocalPosition(stage);
            p2.vec2.set(stagePos, pos.x, pos.y);
            that.stagePositionToPhysics(physicsPosB, stagePos);

            var pinchLength = p2.vec2.dist(physicsPosA, physicsPosB);

            // Get center
            p2.vec2.add(physicsPosA, physicsPosA, physicsPosB);
            p2.vec2.scale(physicsPosA, physicsPosA, 0.5);
            that.zoom(
                (touchA.global.x + touchB.global.x) * 0.5,
                (touchA.global.y + touchB.global.y) * 0.5,
                null,
                pinchLength / initPinchLength * initScaleX, // zoom relative to the initial scale
                pinchLength / initPinchLength * initScaleY
            );

            return;
        }

        if(down && that.state === Renderer.PANNING){
            stage.position.x = e.global.x - lastX + startX;
            stage.position.y = e.global.y - lastY + startY;
        }

        that.lastMousePos = e.global;

        var pos = e.getLocalPosition(stage);
        p2.vec2.set(init_stagePosition, pos.x, pos.y);
        that.stagePositionToPhysics(init_physicsPosition, init_stagePosition);
        that.handleMouseMove(init_physicsPosition);
    };
    container.mouseup = container.touchend = function(e){
        if(e.originalEvent.touches){
            lastNumTouches = e.originalEvent.touches.length;
        }

        down = false;
        lastMoveX = e.global.x;
        lastMoveY = e.global.y;

        that.lastMousePos = e.global;

        var pos = e.getLocalPosition(stage);
        p2.vec2.set(init_stagePosition, pos.x, pos.y);
        that.stagePositionToPhysics(init_physicsPosition, init_stagePosition);
        that.handleMouseUp(init_physicsPosition);
    };

    // http://stackoverflow.com/questions/7691551/touchend-event-in-ios-webkit-not-firing
    this.element.ontouchmove = function(e){
        e.preventDefault();
    };

    function MouseWheelHandler(e) {
        // cross-browser wheel delta
        e = window.event || e; // old IE support
        //var delta = Math.max(-1, Math.min(1, (e.wheelDelta || -e.detail)));

        var o = e,
            d = o.detail, w = o.wheelDelta,
            n = 225, n1 = n-1;

        // Normalize delta: http://stackoverflow.com/a/13650579/2285811
        var f;
        d = d ? w && (f = w/d) ? d/f : -d/1.35 : w/120;
        // Quadratic scale if |d| > 1
        d = d < 1 ? d < -1 ? (-Math.pow(d, 2) - n1) / n : d : (Math.pow(d, 2) + n1) / n;
        // Delta *should* not be greater than 2...
        var delta = Math.min(Math.max(d / 2, -1), 1);

        var out = delta >= 0;
        if(typeof lastMoveX !== 'undefined'){
            that.zoom(lastMoveX, lastMoveY, out, undefined, undefined, delta);
        }
    }

    if (el.addEventListener) {
        el.addEventListener("mousewheel", MouseWheelHandler, false); // IE9, Chrome, Safari, Opera
        el.addEventListener("DOMMouseScroll", MouseWheelHandler, false); // Firefox
    } else {
        el.attachEvent("onmousewheel", MouseWheelHandler); // IE 6/7/8
    }

    this.centerCamera(0, 0);
};

WebGLRenderer.prototype.zoom = function(x, y, zoomOut, actualScaleX, actualScaleY, multiplier){
    var scrollFactor = this.scrollFactor,
        stage = this.stage;

    if(typeof actualScaleX === 'undefined'){

        if(!zoomOut){
            scrollFactor *= -1;
        }

        scrollFactor *= Math.abs(multiplier);

        stage.scale.x *= (1 + scrollFactor);
        stage.scale.y *= (1 + scrollFactor);
        stage.position.x += (scrollFactor) * (stage.position.x - x);
        stage.position.y += (scrollFactor) * (stage.position.y - y);
    } else {
        stage.scale.x *= actualScaleX;
        stage.scale.y *= actualScaleY;
        stage.position.x += (actualScaleX - 1) * (stage.position.x - x);
        stage.position.y += (actualScaleY - 1) * (stage.position.y - y);
    }

    stage.updateTransform();
};

WebGLRenderer.prototype.centerCamera = function(x, y){
    this.stage.position.x = this.renderer.width / 2 - this.stage.scale.x * x;
    this.stage.position.y = this.renderer.height / 2 - this.stage.scale.y * y;

    this.stage.updateTransform();
};

/**
 * Make sure that a rectangle is visible in the canvas.
 * @param  {number} centerX
 * @param  {number} centerY
 * @param  {number} width
 * @param  {number} height
 */
WebGLRenderer.prototype.frame = function(centerX, centerY, width, height){
    var ratio = this.renderer.width / this.renderer.height;
    if(ratio < width / height){
        this.stage.scale.x = this.renderer.width / width;
        this.stage.scale.y = -this.stage.scale.x;
    } else {
        this.stage.scale.y = -this.renderer.height / height;
        this.stage.scale.x = -this.stage.scale.y;
    }
    this.centerCamera(centerX, centerY);
};

/**
 * Draw a circle onto a graphics object
 * @method drawCircle
 * @static
 * @param  {PIXI.Graphics} g
 * @param  {Number} x
 * @param  {Number} y
 * @param  {Number} radius
 * @param  {Number} color
 * @param  {Number} lineWidth
 */
WebGLRenderer.prototype.drawCircle = function(g,x,y,angle,radius,color,lineWidth,isSleeping){
    lineWidth = typeof(lineWidth)==="number" ? lineWidth : 1;
    color = typeof(color)==="number" ? color : 0xffffff;
    g.lineStyle(lineWidth, 0x000000, 1);
    g.beginFill(color, isSleeping ? this.sleepOpacity : 1.0);
    g.drawCircle(x, y, radius);
    g.endFill();

    // line from center to edge
    g.moveTo(x,y);
    g.lineTo(   x + radius*Math.cos(angle),
                y + radius*Math.sin(angle) );
};

WebGLRenderer.drawSpring = function(g,restLength,color,lineWidth){
    lineWidth = typeof(lineWidth)==="number" ? lineWidth : 1;
    color = typeof(color)==="undefined" ? 0xffffff : color;
    g.lineStyle(lineWidth, color, 1);
    if(restLength < lineWidth*10){
        restLength = lineWidth*10;
    }
    var M = 12;
    var dx = restLength/M;
    g.moveTo(-restLength/2,0);
    for(var i=1; i<M; i++){
        var x = -restLength/2 + dx*i;
        var y = 0;
        if(i<=1 || i>=M-1 ){
            // Do nothing
        } else if(i % 2 === 0){
            y -= 0.1*restLength;
        } else {
            y += 0.1*restLength;
        }
        g.lineTo(x,y);
    }
    g.lineTo(restLength/2,0);
};

/**
 * Draw a finite plane onto a PIXI.Graphics.
 * @method drawPlane
 * @param  {PIXI.Graphics} g
 * @param  {Number} x0
 * @param  {Number} x1
 * @param  {Number} color
 * @param  {Number} lineWidth
 * @param  {Number} diagMargin
 * @param  {Number} diagSize
 * @todo Should consider an angle
 */
WebGLRenderer.drawPlane = function(g, x0, x1, color, lineColor, lineWidth, diagMargin, diagSize, maxLength){
    lineWidth = typeof(lineWidth)==="number" ? lineWidth : 1;
    color = typeof(color)==="undefined" ? 0xffffff : color;
    g.lineStyle(lineWidth, lineColor, 1);

    // Draw a fill color
    g.lineStyle(0,0,0);
    g.beginFill(color);
    var max = maxLength;
    g.moveTo(-max,0);
    g.lineTo(max,0);
    g.lineTo(max,-max);
    g.lineTo(-max,-max);
    g.endFill();

    // Draw the actual plane
    g.lineStyle(lineWidth,lineColor);
    g.moveTo(-max,0);
    g.lineTo(max,0);
};


WebGLRenderer.drawLine = function(g, offset, angle, len, color, lineWidth){
    lineWidth = typeof(lineWidth)==="number" ? lineWidth : 1;
    color = typeof(color)==="undefined" ? 0x000000 : color;
    g.lineStyle(lineWidth, color, 1);

    var startPoint = p2.vec2.fromValues(-len/2,0);
    var endPoint = p2.vec2.fromValues(len/2,0);

    p2.vec2.rotate(startPoint, startPoint, angle);
    p2.vec2.rotate(endPoint, endPoint, angle);

    p2.vec2.add(startPoint, startPoint, offset);
    p2.vec2.add(endPoint, endPoint, offset);

    g.moveTo(startPoint[0], startPoint[1]);
    g.lineTo(endPoint[0], endPoint[1]);
};

WebGLRenderer.prototype.drawCapsule = function(g, x, y, angle, len, radius, color, fillColor, lineWidth, isSleeping){
    lineWidth = typeof(lineWidth)==="number" ? lineWidth : 1;
    color = typeof(color)==="undefined" ? 0x000000 : color;
    g.lineStyle(lineWidth, color, 1);

    // Draw circles at ends
    var c = Math.cos(angle);
    var s = Math.sin(angle);
    g.beginFill(fillColor, isSleeping ? this.sleepOpacity : 1.0);
    g.drawCircle(-len/2*c + x, -len/2*s + y, radius);
    g.drawCircle( len/2*c + x,  len/2*s + y, radius);
    g.endFill();

    // Draw rectangle
    g.lineStyle(lineWidth, color, 0);
    g.beginFill(fillColor, isSleeping ? this.sleepOpacity : 1.0);
    g.moveTo(-len/2*c + radius*s + x, -len/2*s + radius*c + y);
    g.lineTo( len/2*c + radius*s + x,  len/2*s + radius*c + y);
    g.lineTo( len/2*c - radius*s + x,  len/2*s - radius*c + y);
    g.lineTo(-len/2*c - radius*s + x, -len/2*s - radius*c + y);
    g.endFill();

    // Draw lines in between
    g.lineStyle(lineWidth, color, 1);
    g.moveTo(-len/2*c + radius*s + x, -len/2*s + radius*c + y);
    g.lineTo( len/2*c + radius*s + x,  len/2*s + radius*c + y);
    g.moveTo(-len/2*c - radius*s + x, -len/2*s - radius*c + y);
    g.lineTo( len/2*c - radius*s + x,  len/2*s - radius*c + y);

};

// Todo angle
WebGLRenderer.prototype.drawRectangle = function(g,x,y,angle,w,h,color,fillColor,lineWidth,isSleeping){
    lineWidth = typeof(lineWidth)==="number" ? lineWidth : 1;
    color = typeof(color)==="number" ? color : 0xffffff;
    fillColor = typeof(fillColor)==="number" ? fillColor : 0xffffff;
    g.lineStyle(lineWidth, color, isSleeping ? this.sleepOpacity : 1.0);
    g.beginFill(fillColor, isSleeping ? this.sleepOpacity : 1.0);
    g.drawRect(x-w/2,y-h/2,w,h);
};

WebGLRenderer.prototype.drawConvex = function(g,verts,triangles,color,fillColor,lineWidth,debug,offset,isSleeping){
    lineWidth = typeof(lineWidth)==="number" ? lineWidth : 1;
    color = typeof(color)==="undefined" ? 0x000000 : color;
    if(!debug){
        g.lineStyle(lineWidth, color, 1);
        g.beginFill(fillColor, isSleeping ? this.sleepOpacity : 1.0);
        for(var i=0; i!==verts.length; i++){
            var v = verts[i],
                x = v[0],
                y = v[1];
            if(i===0){
                g.moveTo(x,y);
            } else {
                g.lineTo(x,y);
            }
        }
        g.endFill();
        if(verts.length>2){
            g.moveTo(verts[verts.length-1][0],verts[verts.length-1][1]);
            g.lineTo(verts[0][0],verts[0][1]);
        }
    } else {
        var colors = [0xff0000,0x00ff00,0x0000ff];
        for(var i=0; i!==verts.length+1; i++){
            var v0 = verts[i%verts.length],
                v1 = verts[(i+1)%verts.length],
                x0 = v0[0],
                y0 = v0[1],
                x1 = v1[0],
                y1 = v1[1];
            g.lineStyle(lineWidth, colors[i%colors.length], 1);
            g.moveTo(x0,y0);
            g.lineTo(x1,y1);
            g.drawCircle(x0,y0,lineWidth*2);
        }

        g.lineStyle(lineWidth, 0x000000, 1);
        g.drawCircle(offset[0],offset[1],lineWidth*2);
    }
};

WebGLRenderer.prototype.drawPath = function(g,path,color,fillColor,lineWidth,isSleeping){
    lineWidth = typeof(lineWidth)==="number" ? lineWidth : 1;
    color = typeof(color)==="undefined" ? 0x000000 : color;
    g.lineStyle(lineWidth, color, 1);
    if(typeof(fillColor)==="number"){
        g.beginFill(fillColor, isSleeping ? this.sleepOpacity : 1.0);
    }
    var lastx = null,
        lasty = null;
    for(var i=0; i<path.length; i++){
        var v = path[i],
            x = v[0],
            y = v[1];
        if(x !== lastx || y !== lasty){
            if(i===0){
                g.moveTo(x,y);
            } else {
                // Check if the lines are parallel
                var p1x = lastx,
                    p1y = lasty,
                    p2x = x,
                    p2y = y,
                    p3x = path[(i+1)%path.length][0],
                    p3y = path[(i+1)%path.length][1];
                var area = ((p2x - p1x)*(p3y - p1y))-((p3x - p1x)*(p2y - p1y));
                if(area !== 0){
                    g.lineTo(x,y);
                }
            }
            lastx = x;
            lasty = y;
        }
    }
    if(typeof(fillColor)==="number"){
        g.endFill();
    }

    // Close the path
    if(path.length>2 && typeof(fillColor)==="number"){
        g.moveTo(path[path.length-1][0],path[path.length-1][1]);
        g.lineTo(path[0][0],path[0][1]);
    }
};

WebGLRenderer.prototype.updateSpriteTransform = function(sprite,body){
    if(this.useInterpolatedPositions && !this.paused){
        sprite.position.x = body.interpolatedPosition[0];
        sprite.position.y = body.interpolatedPosition[1];
        sprite.rotation = body.interpolatedAngle;
    } else {
        sprite.position.x = body.position[0];
        sprite.position.y = body.position[1];
        sprite.rotation = body.angle;
    }
};

var X = p2.vec2.fromValues(1,0),
    distVec = p2.vec2.fromValues(0,0),
    worldAnchorA = p2.vec2.fromValues(0,0),
    worldAnchorB = p2.vec2.fromValues(0,0);
WebGLRenderer.prototype.render = function(){
    var w = this.renderer.width,
        h = this.renderer.height,
        springSprites = this.springSprites,
        sprites = this.sprites;

    // Update body transforms
    for(var i=0; i!==this.bodies.length; i++){
        this.updateSpriteTransform(this.sprites[i],this.bodies[i]);
    }

    // Update graphics if the body changed sleepState
    for(var i=0; i!==this.bodies.length; i++){
        var isSleeping = (this.bodies[i].sleepState===p2.Body.SLEEPING);
        var sprite = this.sprites[i];
        var body = this.bodies[i];
        if(sprite.drawnSleeping !== isSleeping){
            sprite.clear();
            this.drawRenderable(body, sprite, sprite.drawnColor, sprite.drawnLineColor);
        }
    }

    // Update spring transforms
    for(var i=0; i!==this.springs.length; i++){
        var s = this.springs[i],
            sprite = springSprites[i],
            bA = s.bodyA,
            bB = s.bodyB;

        if(this.useInterpolatedPositions && !this.paused){
            p2.vec2.toGlobalFrame(worldAnchorA, s.localAnchorA, bA.interpolatedPosition, bA.interpolatedAngle);
            p2.vec2.toGlobalFrame(worldAnchorB, s.localAnchorB, bB.interpolatedPosition, bB.interpolatedAngle);
        } else {
            s.getWorldAnchorA(worldAnchorA);
            s.getWorldAnchorB(worldAnchorB);
        }

        sprite.scale.y = 1;
        if(worldAnchorA[1] < worldAnchorB[1]){
            var tmp = worldAnchorA;
            worldAnchorA = worldAnchorB;
            worldAnchorB = tmp;
            sprite.scale.y = -1;
        }

        var sxA = worldAnchorA[0],
            syA = worldAnchorA[1],
            sxB = worldAnchorB[0],
            syB = worldAnchorB[1];

        // Spring position is the mean point between the anchors
        sprite.position.x = ( sxA + sxB ) / 2;
        sprite.position.y = ( syA + syB ) / 2;

        // Compute distance vector between anchors, in screen coords
        distVec[0] = sxA - sxB;
        distVec[1] = syA - syB;

        // Compute angle
        sprite.rotation = Math.acos( p2.vec2.dot(X, distVec) / p2.vec2.length(distVec) );

        // And scale
        sprite.scale.x = p2.vec2.length(distVec) / s.restLength;
    }

    // Clear contacts
    if(this.drawContacts){
        this.contactGraphics.clear();
        this.stage.removeChild(this.contactGraphics);
        this.stage.addChild(this.contactGraphics);

        var g = this.contactGraphics;
        g.lineStyle(this.lineWidth,0x000000,1);
        for(var i=0; i!==this.world.narrowphase.contactEquations.length; i++){
            var eq = this.world.narrowphase.contactEquations[i],
                bi = eq.bodyA,
                bj = eq.bodyB,
                ri = eq.contactPointA,
                rj = eq.contactPointB,
                xi = bi.position[0],
                yi = bi.position[1],
                xj = bj.position[0],
                yj = bj.position[1];

            g.moveTo(xi,yi);
            g.lineTo(xi+ri[0], yi+ri[1]);

            g.moveTo(xj,yj);
            g.lineTo(xj+rj[0], yj+rj[1]);

        }
        this.contactGraphics.cleared = false;
    } else if(!this.contactGraphics.cleared){
        this.contactGraphics.clear();
        this.contactGraphics.cleared = true;
    }

    // Draw AABBs
    if(this.drawAABBs){
        this.aabbGraphics.clear();
        this.stage.removeChild(this.aabbGraphics);
        this.stage.addChild(this.aabbGraphics);
        var g = this.aabbGraphics;
        g.lineStyle(this.lineWidth,0x000000,1);

        for(var i=0; i!==this.world.bodies.length; i++){
            var aabb = this.world.bodies[i].getAABB();
            g.drawRect(aabb.lowerBound[0], aabb.lowerBound[1], aabb.upperBound[0] - aabb.lowerBound[0], aabb.upperBound[1] - aabb.lowerBound[1]);
        }
        this.aabbGraphics.cleared = false;
    } else if(!this.aabbGraphics.cleared){
        this.aabbGraphics.clear();
        this.aabbGraphics.cleared = true;
    }

    if(this.followBody){
        app.centerCamera(this.followBody.interpolatedPosition[0], this.followBody.interpolatedPosition[1]);
    }

    this.renderer.render(this.container);
};

//http://stackoverflow.com/questions/5623838/rgb-to-hex-and-hex-to-rgb
function componentToHex(c) {
    var hex = c.toString(16);
    return hex.length === 1 ? "0" + hex : hex;
}
function rgbToHex(r, g, b) {
    return componentToHex(r) + componentToHex(g) + componentToHex(b);
}
//http://stackoverflow.com/questions/43044/algorithm-to-randomly-generate-an-aesthetically-pleasing-color-palette
function randomPastelHex(){
    var mix = [255,255,255];
    var red =   Math.floor(Math.random()*256);
    var green = Math.floor(Math.random()*256);
    var blue =  Math.floor(Math.random()*256);

    // mix the color
    red =   Math.floor((red +   3*mix[0]) / 4);
    green = Math.floor((green + 3*mix[1]) / 4);
    blue =  Math.floor((blue +  3*mix[2]) / 4);

    return rgbToHex(red,green,blue);
}

WebGLRenderer.prototype.drawRenderable = function(obj, graphics, color, lineColor){
    var lw = this.lineWidth;

    var zero = [0,0];
    graphics.drawnSleeping = false;
    graphics.drawnColor = color;
    graphics.drawnLineColor = lineColor;

    if(obj instanceof p2.Body && obj.shapes.length){

        var isSleeping = (obj.sleepState === p2.Body.SLEEPING);
        graphics.drawnSleeping = isSleeping;

        if(obj.concavePath && !this.debugPolygons){
            var path = [];
            for(var j=0; j!==obj.concavePath.length; j++){
                var v = obj.concavePath[j];
                path.push([v[0], v[1]]);
            }
            this.drawPath(graphics, path, lineColor, color, lw, isSleeping);
        } else {
            for(var i=0; i<obj.shapes.length; i++){
                var child = obj.shapes[i],
                    offset = child.position,
                    angle = child.angle;

                if(child instanceof p2.Circle){
                    this.drawCircle(graphics, offset[0], offset[1], angle, child.radius,color,lw,isSleeping);

                } else if(child instanceof p2.Particle){
                    this.drawCircle(graphics, offset[0], offset[1], angle, 2*lw, lineColor, 0);

                } else if(child instanceof p2.Plane){
                    // TODO use shape angle
                    WebGLRenderer.drawPlane(graphics, -10, 10, color, lineColor, lw, lw*10, lw*10, 100);

                } else if(child instanceof p2.Line){
                    WebGLRenderer.drawLine(graphics, offset, angle, child.length, lineColor, lw);

                } else if(child instanceof p2.Box){
                    if(obj.ghost) {
                      // gray
                      color = 0x999999;
                      lineColor = 0x999999;
                    }
                    this.drawRectangle(graphics, offset[0], offset[1], angle, child.width, child.height, lineColor, color, lw, isSleeping || obj.ghost);

                } else if(child instanceof p2.Capsule){
                    this.drawCapsule(graphics, offset[0], offset[1], angle, child.length, child.radius, lineColor, color, lw, isSleeping);

                } else if(child instanceof p2.Convex){
                    // Scale verts
                    var verts = [],
                        vrot = p2.vec2.create();
                    for(var j=0; j!==child.vertices.length; j++){
                        var v = child.vertices[j];
                        p2.vec2.rotate(vrot, v, angle);
                        verts.push([(vrot[0]+offset[0]), (vrot[1]+offset[1])]);
                    }
                    this.drawConvex(graphics, verts, child.triangles, lineColor, color, lw, this.debugPolygons,[offset[0],-offset[1]], isSleeping);

                } else if(child instanceof p2.Heightfield){
                    var path = [[0,-100]];
                    for(var j=0; j!==child.heights.length; j++){
                        var v = child.heights[j];
                        path.push([j*child.elementWidth, v]);
                    }
                    path.push([child.heights.length*child.elementWidth,-100]);
                    this.drawPath(graphics, path, lineColor, color, lw, isSleeping);

                }
            }
        }

    } else if(obj instanceof p2.Spring){
        var restLengthPixels = obj.restLength;
        WebGLRenderer.drawSpring(graphics,restLengthPixels,0x000000,lw);
    }
};

WebGLRenderer.prototype.addRenderable = function(obj){
    var lw = this.lineWidth;

    // Random color
    var color = parseInt(randomPastelHex(),16),
        lineColor = 0x000000;

    var zero = [0,0];

    var sprite = new PIXI.Graphics();
    if(obj instanceof p2.Body && obj.shapes.length){
        this.drawRenderable(obj, sprite, color, lineColor);
        this.sprites.push(sprite);
        this.stage.addChild(sprite);

    } else if(obj instanceof p2.Spring){
        this.drawRenderable(obj, sprite, 0x000000, lineColor);
        this.springSprites.push(sprite);
        this.stage.addChild(sprite);
    }
};

WebGLRenderer.prototype.removeRenderable = function(obj){
    if(obj instanceof p2.Body){
        var i = this.bodies.indexOf(obj);
        if(i!==-1){
            this.stage.removeChild(this.sprites[i]);
            this.sprites.splice(i,1);
        }
    } else if(obj instanceof p2.Spring){
        var i = this.springs.indexOf(obj);
        if(i!==-1){
            this.stage.removeChild(this.springSprites[i]);
            this.springSprites.splice(i,1);
        }
    }
};

WebGLRenderer.prototype.resize = function(w,h){
    var renderer = this.renderer;
    var view = renderer.view;
    var ratio = w / h;
    renderer.resize(w, h);
};

})(p2);