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✏️ Editing: raphael.core.js

define(["eve"], function(eve) {

/*\
     * Raphael
     [ method ]
     **
     * Creates a canvas object on which to draw.
     * You must do this first, as all future calls to drawing methods
     * from this instance will be bound to this canvas.
     > Parameters
     **
     - container (HTMLElement|string) DOM element or its ID which is going to be a parent for drawing surface
     - width (number)
     - height (number)
     - callback (function) #optional callback function which is going to be executed in the context of newly created paper
     * or
     - x (number)
     - y (number)
     - width (number)
     - height (number)
     - callback (function) #optional callback function which is going to be executed in the context of newly created paper
     * or
     - all (array) (first 3 or 4 elements in the array are equal to [containerID, width, height] or [x, y, width, height]. The rest are element descriptions in format {type: type, <attributes>}). See @Paper.add.
     - callback (function) #optional callback function which is going to be executed in the context of newly created paper
     * or
     - onReadyCallback (function) function that is going to be called on DOM ready event. You can also subscribe to this event via Eve’s “DOMLoad” event. In this case method returns `undefined`.
     = (object) @Paper
     > Usage
     | // Each of the following examples create a canvas
     | // that is 320px wide by 200px high.
     | // Canvas is created at the viewport’s 10,50 coordinate.
     | var paper = Raphael(10, 50, 320, 200);
     | // Canvas is created at the top left corner of the #notepad element
     | // (or its top right corner in dir="rtl" elements)
     | var paper = Raphael(document.getElementById("notepad"), 320, 200);
     | // Same as above
     | var paper = Raphael("notepad", 320, 200);
     | // Image dump
     | var set = Raphael(["notepad", 320, 200, {
     |     type: "rect",
     |     x: 10,
     |     y: 10,
     |     width: 25,
     |     height: 25,
     |     stroke: "#f00"
     | }, {
     |     type: "text",
     |     x: 30,
     |     y: 40,
     |     text: "Dump"
     | }]);
    \*/
    function R(first) {
        if (R.is(first, "function")) {
            return loaded ? first() : eve.on("raphael.DOMload", first);
        } else if (R.is(first, array)) {
            return R._engine.create[apply](R, first.splice(0, 3 + R.is(first[0], nu))).add(first);
        } else {
            var args = Array.prototype.slice.call(arguments, 0);
            if (R.is(args[args.length - 1], "function")) {
                var f = args.pop();
                return loaded ? f.call(R._engine.create[apply](R, args)) : eve.on("raphael.DOMload", function () {
                    f.call(R._engine.create[apply](R, args));
                });
            } else {
                return R._engine.create[apply](R, arguments);
            }
        }
    }
    R.version = "2.3.0";
    R.eve = eve;
    var loaded,
        separator = /[, ]+/,
        elements = {circle: 1, rect: 1, path: 1, ellipse: 1, text: 1, image: 1},
        formatrg = /\{(\d+)\}/g,
        proto = "prototype",
        has = "hasOwnProperty",
        g = {
            doc: document,
            win: window
        },
        oldRaphael = {
            was: Object.prototype[has].call(g.win, "Raphael"),
            is: g.win.Raphael
        },
        Paper = function () {
            /*\
             * Paper.ca
             [ property (object) ]
             **
             * Shortcut for @Paper.customAttributes
            \*/
            /*\
             * Paper.customAttributes
             [ property (object) ]
             **
             * If you have a set of attributes that you would like to represent
             * as a function of some number you can do it easily with custom attributes:
             > Usage
             | paper.customAttributes.hue = function (num) {
             |     num = num % 1;
             |     return {fill: "hsb(" + num + ", 0.75, 1)"};
             | };
             | // Custom attribute “hue” will change fill
             | // to be given hue with fixed saturation and brightness.
             | // Now you can use it like this:
             | var c = paper.circle(10, 10, 10).attr({hue: .45});
             | // or even like this:
             | c.animate({hue: 1}, 1e3);
             |
             | // You could also create custom attribute
             | // with multiple parameters:
             | paper.customAttributes.hsb = function (h, s, b) {
             |     return {fill: "hsb(" + [h, s, b].join(",") + ")"};
             | };
             | c.attr({hsb: "0.5 .8 1"});
             | c.animate({hsb: [1, 0, 0.5]}, 1e3);
            \*/
            this.ca = this.customAttributes = {};
        },
        paperproto,
        appendChild = "appendChild",
        apply = "apply",
        concat = "concat",
        //taken from Modernizr touch test: https://github.com/Modernizr/Modernizr/blob/master/feature-detects/touchevents.js#L40
        supportsTouch = ('ontouchstart' in window) || window.TouchEvent || window.DocumentTouch && document instanceof DocumentTouch,
        E = "",
        S = " ",
        Str = String,
        split = "split",
        events = "click dblclick mousedown mousemove mouseout mouseover mouseup touchstart touchmove touchend touchcancel"[split](S),
        touchMap = {
            mousedown: "touchstart",
            mousemove: "touchmove",
            mouseup: "touchend"
        },
        lowerCase = Str.prototype.toLowerCase,
        math = Math,
        mmax = math.max,
        mmin = math.min,
        abs = math.abs,
        pow = math.pow,
        PI = math.PI,
        nu = "number",
        string = "string",
        array = "array",
        toString = "toString",
        fillString = "fill",
        objectToString = Object.prototype.toString,
        paper = {},
        push = "push",
        ISURL = R._ISURL = /^url$['"]?(.+?)['"]?$$/i,
        colourRegExp = /^\s*((#[a-f\d]{6})|(#[a-f\d]{3})|rgba?$\s*([\d\.]+%?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+%?(?:\s*,\s*[\d\.]+%?)?)\s*$|hsba?$\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?)%?\s*$|hsla?$\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?)%?\s*$)\s*$/i,
        isnan = {"NaN": 1, "Infinity": 1, "-Infinity": 1},
        bezierrg = /^(?:cubic-)?bezier$([^,]+),([^,]+),([^,]+),([^$]+)\)/,
        round = math.round,
        setAttribute = "setAttribute",
        toFloat = parseFloat,
        toInt = parseInt,
        upperCase = Str.prototype.toUpperCase,
        availableAttrs = R._availableAttrs = {
            "arrow-end": "none",
            "arrow-start": "none",
            blur: 0,
            "clip-rect": "0 0 1e9 1e9",
            cursor: "default",
            cx: 0,
            cy: 0,
            fill: "#fff",
            "fill-opacity": 1,
            font: '10px "Arial"',
            "font-family": '"Arial"',
            "font-size": "10",
            "font-style": "normal",
            "font-weight": 400,
            gradient: 0,
            height: 0,
            href: "http://raphaeljs.com/",
            "letter-spacing": 0,
            opacity: 1,
            path: "M0,0",
            r: 0,
            rx: 0,
            ry: 0,
            src: "",
            stroke: "#000",
            "stroke-dasharray": "",
            "stroke-linecap": "butt",
            "stroke-linejoin": "butt",
            "stroke-miterlimit": 0,
            "stroke-opacity": 1,
            "stroke-width": 1,
            target: "_blank",
            "text-anchor": "middle",
            title: "Raphael",
            transform: "",
            width: 0,
            x: 0,
            y: 0,
            "class": ""
        },
        availableAnimAttrs = R._availableAnimAttrs = {
            blur: nu,
            "clip-rect": "csv",
            cx: nu,
            cy: nu,
            fill: "colour",
            "fill-opacity": nu,
            "font-size": nu,
            height: nu,
            opacity: nu,
            path: "path",
            r: nu,
            rx: nu,
            ry: nu,
            stroke: "colour",
            "stroke-opacity": nu,
            "stroke-width": nu,
            transform: "transform",
            width: nu,
            x: nu,
            y: nu
        },
        whitespace = /[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]/g,
        commaSpaces = /[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*/,
        hsrg = {hs: 1, rg: 1},
        p2s = /,?([achlmqrstvxz]),?/gi,
        pathCommand = /([achlmrqstvz])[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029,]*((-?\d*\.?\d*(?:e[\-+]?\d+)?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*)+)/ig,
        tCommand = /([rstm])[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029,]*((-?\d*\.?\d*(?:e[\-+]?\d+)?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*)+)/ig,
        pathValues = /(-?\d*\.?\d*(?:e[\-+]?\d+)?)[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,?[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*/ig,
        radial_gradient = R._radial_gradient = /^r(?:$([^,]+?)[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*,[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029]*([^$]+?)\))?/,
        eldata = {},
        sortByKey = function (a, b) {
            return a.key - b.key;
        },
        sortByNumber = function (a, b) {
            return toFloat(a) - toFloat(b);
        },
        fun = function () {},
        pipe = function (x) {
            return x;
        },
        rectPath = R._rectPath = function (x, y, w, h, r) {
            if (r) {
                return [["M", x + r, y], ["l", w - r * 2, 0], ["a", r, r, 0, 0, 1, r, r], ["l", 0, h - r * 2], ["a", r, r, 0, 0, 1, -r, r], ["l", r * 2 - w, 0], ["a", r, r, 0, 0, 1, -r, -r], ["l", 0, r * 2 - h], ["a", r, r, 0, 0, 1, r, -r], ["z"]];
            }
            return [["M", x, y], ["l", w, 0], ["l", 0, h], ["l", -w, 0], ["z"]];
        },
        ellipsePath = function (x, y, rx, ry) {
            if (ry == null) {
                ry = rx;
            }
            return [["M", x, y], ["m", 0, -ry], ["a", rx, ry, 0, 1, 1, 0, 2 * ry], ["a", rx, ry, 0, 1, 1, 0, -2 * ry], ["z"]];
        },
        getPath = R._getPath = {
            path: function (el) {
                return el.attr("path");
            },
            circle: function (el) {
                var a = el.attrs;
                return ellipsePath(a.cx, a.cy, a.r);
            },
            ellipse: function (el) {
                var a = el.attrs;
                return ellipsePath(a.cx, a.cy, a.rx, a.ry);
            },
            rect: function (el) {
                var a = el.attrs;
                return rectPath(a.x, a.y, a.width, a.height, a.r);
            },
            image: function (el) {
                var a = el.attrs;
                return rectPath(a.x, a.y, a.width, a.height);
            },
            text: function (el) {
                var bbox = el._getBBox();
                return rectPath(bbox.x, bbox.y, bbox.width, bbox.height);
            },
            set : function(el) {
                var bbox = el._getBBox();
                return rectPath(bbox.x, bbox.y, bbox.width, bbox.height);
            }
        },
        /*\
         * Raphael.mapPath
         [ method ]
         **
         * Transform the path string with given matrix.
         > Parameters
         - path (string) path string
         - matrix (object) see @Matrix
         = (string) transformed path string
        \*/
        mapPath = R.mapPath = function (path, matrix) {
            if (!matrix) {
                return path;
            }
            var x, y, i, j, ii, jj, pathi;
            path = path2curve(path);
            for (i = 0, ii = path.length; i < ii; i++) {
                pathi = path[i];
                for (j = 1, jj = pathi.length; j < jj; j += 2) {
                    x = matrix.x(pathi[j], pathi[j + 1]);
                    y = matrix.y(pathi[j], pathi[j + 1]);
                    pathi[j] = x;
                    pathi[j + 1] = y;
                }
            }
            return path;
        };

R._g = g;
    /*\
     * Raphael.type
     [ property (string) ]
     **
     * Can be “SVG”, “VML” or empty, depending on browser support.
    \*/
    R.type = (g.win.SVGAngle || g.doc.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#BasicStructure", "1.1") ? "SVG" : "VML");
    if (R.type == "VML") {
        var d = g.doc.createElement("div"),
            b;
        d.innerHTML = '<v:shape adj="1"/>';
        b = d.firstChild;
        b.style.behavior = "url(#default#VML)";
        if (!(b && typeof b.adj == "object")) {
            return (R.type = E);
        }
        d = null;
    }
    /*\
     * Raphael.svg
     [ property (boolean) ]
     **
     * `true` if browser supports SVG.
    \*/
    /*\
     * Raphael.vml
     [ property (boolean) ]
     **
     * `true` if browser supports VML.
    \*/
    R.svg = !(R.vml = R.type == "VML");
    R._Paper = Paper;
    /*\
     * Raphael.fn
     [ property (object) ]
     **
     * You can add your own method to the canvas. For example if you want to draw a pie chart,
     * you can create your own pie chart function and ship it as a Raphaël plugin. To do this
     * you need to extend the `Raphael.fn` object. You should modify the `fn` object before a
     * Raphaël instance is created, otherwise it will take no effect. Please note that the
     * ability for namespaced plugins was removed in Raphael 2.0. It is up to the plugin to
     * ensure any namespacing ensures proper context.
     > Usage
     | Raphael.fn.arrow = function (x1, y1, x2, y2, size) {
     |     return this.path( ... );
     | };
     | // or create namespace
     | Raphael.fn.mystuff = {
     |     arrow: function () {…},
     |     star: function () {…},
     |     // etc…
     | };
     | var paper = Raphael(10, 10, 630, 480);
     | // then use it
     | paper.arrow(10, 10, 30, 30, 5).attr({fill: "#f00"});
     | paper.mystuff.arrow();
     | paper.mystuff.star();
    \*/
    R.fn = paperproto = Paper.prototype = R.prototype;
    R._id = 0;
    /*\
     * Raphael.is
     [ method ]
     **
     * Handful of replacements for `typeof` operator.
     > Parameters
     - o (…) any object or primitive
     - type (string) name of the type, i.e. “string”, “function”, “number”, etc.
     = (boolean) is given value is of given type
    \*/
    R.is = function (o, type) {
        type = lowerCase.call(type);
        if (type == "finite") {
            return !isnan[has](+o);
        }
        if (type == "array") {
            return o instanceof Array;
        }
        return  (type == "null" && o === null) ||
                (type == typeof o && o !== null) ||
                (type == "object" && o === Object(o)) ||
                (type == "array" && Array.isArray && Array.isArray(o)) ||
                objectToString.call(o).slice(8, -1).toLowerCase() == type;
    };

/*\
     * Raphael.angle
     [ method ]
     **
     * Returns angle between two or three points
     > Parameters
     - x1 (number) x coord of first point
     - y1 (number) y coord of first point
     - x2 (number) x coord of second point
     - y2 (number) y coord of second point
     - x3 (number) #optional x coord of third point
     - y3 (number) #optional y coord of third point
     = (number) angle in degrees.
    \*/
    R.angle = function (x1, y1, x2, y2, x3, y3) {
        if (x3 == null) {
            var x = x1 - x2,
                y = y1 - y2;
            if (!x && !y) {
                return 0;
            }
            return (180 + math.atan2(-y, -x) * 180 / PI + 360) % 360;
        } else {
            return R.angle(x1, y1, x3, y3) - R.angle(x2, y2, x3, y3);
        }
    };
    /*\
     * Raphael.rad
     [ method ]
     **
     * Transform angle to radians
     > Parameters
     - deg (number) angle in degrees
     = (number) angle in radians.
    \*/
    R.rad = function (deg) {
        return deg % 360 * PI / 180;
    };
    /*\
     * Raphael.deg
     [ method ]
     **
     * Transform angle to degrees
     > Parameters
     - rad (number) angle in radians
     = (number) angle in degrees.
    \*/
    R.deg = function (rad) {
        return Math.round ((rad * 180 / PI% 360)* 1000) / 1000;
    };
    /*\
     * Raphael.snapTo
     [ method ]
     **
     * Snaps given value to given grid.
     > Parameters
     - values (array|number) given array of values or step of the grid
     - value (number) value to adjust
     - tolerance (number) #optional tolerance for snapping. Default is `10`.
     = (number) adjusted value.
    \*/
    R.snapTo = function (values, value, tolerance) {
        tolerance = R.is(tolerance, "finite") ? tolerance : 10;
        if (R.is(values, array)) {
            var i = values.length;
            while (i--) if (abs(values[i] - value) <= tolerance) {
                return values[i];
            }
        } else {
            values = +values;
            var rem = value % values;
            if (rem < tolerance) {
                return value - rem;
            }
            if (rem > values - tolerance) {
                return value - rem + values;
            }
        }
        return value;
    };

/*\
     * Raphael.createUUID
     [ method ]
     **
     * Returns RFC4122, version 4 ID
    \*/
    var createUUID = R.createUUID = (function (uuidRegEx, uuidReplacer) {
        return function () {
            return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(uuidRegEx, uuidReplacer).toUpperCase();
        };
    })(/[xy]/g, function (c) {
        var r = math.random() * 16 | 0,
            v = c == "x" ? r : (r & 3 | 8);
        return v.toString(16);
    });

/*\
     * Raphael.setWindow
     [ method ]
     **
     * Used when you need to draw in `&lt;iframe>`. Switched window to the iframe one.
     > Parameters
     - newwin (window) new window object
    \*/
    R.setWindow = function (newwin) {
        eve("raphael.setWindow", R, g.win, newwin);
        g.win = newwin;
        g.doc = g.win.document;
        if (R._engine.initWin) {
            R._engine.initWin(g.win);
        }
    };
    var toHex = function (color) {
        if (R.vml) {
            // http://dean.edwards.name/weblog/2009/10/convert-any-colour-value-to-hex-in-msie/
            var trim = /^\s+|\s+$/g;
            var bod;
            try {
                var docum = new ActiveXObject("htmlfile");
                docum.write("<body>");
                docum.close();
                bod = docum.body;
            } catch(e) {
                bod = createPopup().document.body;
            }
            var range = bod.createTextRange();
            toHex = cacher(function (color) {
                try {
                    bod.style.color = Str(color).replace(trim, E);
                    var value = range.queryCommandValue("ForeColor");
                    value = ((value & 255) << 16) | (value & 65280) | ((value & 16711680) >>> 16);
                    return "#" + ("000000" + value.toString(16)).slice(-6);
                } catch(e) {
                    return "none";
                }
            });
        } else {
            var i = g.doc.createElement("i");
            i.title = "Rapha\xebl Colour Picker";
            i.style.display = "none";
            g.doc.body.appendChild(i);
            toHex = cacher(function (color) {
                i.style.color = color;
                return g.doc.defaultView.getComputedStyle(i, E).getPropertyValue("color");
            });
        }
        return toHex(color);
    },
    hsbtoString = function () {
        return "hsb(" + [this.h, this.s, this.b] + ")";
    },
    hsltoString = function () {
        return "hsl(" + [this.h, this.s, this.l] + ")";
    },
    rgbtoString = function () {
        return this.hex;
    },
    prepareRGB = function (r, g, b) {
        if (g == null && R.is(r, "object") && "r" in r && "g" in r && "b" in r) {
            b = r.b;
            g = r.g;
            r = r.r;
        }
        if (g == null && R.is(r, string)) {
            var clr = R.getRGB(r);
            r = clr.r;
            g = clr.g;
            b = clr.b;
        }
        if (r > 1 || g > 1 || b > 1) {
            r /= 255;
            g /= 255;
            b /= 255;
        }

return [r, g, b];
    },
    packageRGB = function (r, g, b, o) {
        r *= 255;
        g *= 255;
        b *= 255;
        var rgb = {
            r: r,
            g: g,
            b: b,
            hex: R.rgb(r, g, b),
            toString: rgbtoString
        };
        R.is(o, "finite") && (rgb.opacity = o);
        return rgb;
    };

/*\
     * Raphael.color
     [ method ]
     **
     * Parses the color string and returns object with all values for the given color.
     > Parameters
     - clr (string) color string in one of the supported formats (see @Raphael.getRGB)
     = (object) Combined RGB & HSB object in format:
     o {
     o     r (number) red,
     o     g (number) green,
     o     b (number) blue,
     o     hex (string) color in HTML/CSS format: #••••••,
     o     error (boolean) `true` if string can’t be parsed,
     o     h (number) hue,
     o     s (number) saturation,
     o     v (number) value (brightness),
     o     l (number) lightness
     o }
    \*/
    R.color = function (clr) {
        var rgb;
        if (R.is(clr, "object") && "h" in clr && "s" in clr && "b" in clr) {
            rgb = R.hsb2rgb(clr);
            clr.r = rgb.r;
            clr.g = rgb.g;
            clr.b = rgb.b;
            clr.hex = rgb.hex;
        } else if (R.is(clr, "object") && "h" in clr && "s" in clr && "l" in clr) {
            rgb = R.hsl2rgb(clr);
            clr.r = rgb.r;
            clr.g = rgb.g;
            clr.b = rgb.b;
            clr.hex = rgb.hex;
        } else {
            if (R.is(clr, "string")) {
                clr = R.getRGB(clr);
            }
            if (R.is(clr, "object") && "r" in clr && "g" in clr && "b" in clr) {
                rgb = R.rgb2hsl(clr);
                clr.h = rgb.h;
                clr.s = rgb.s;
                clr.l = rgb.l;
                rgb = R.rgb2hsb(clr);
                clr.v = rgb.b;
            } else {
                clr = {hex: "none"};
                clr.r = clr.g = clr.b = clr.h = clr.s = clr.v = clr.l = -1;
            }
        }
        clr.toString = rgbtoString;
        return clr;
    };
    /*\
     * Raphael.hsb2rgb
     [ method ]
     **
     * Converts HSB values to RGB object.
     > Parameters
     - h (number) hue
     - s (number) saturation
     - v (number) value or brightness
     = (object) RGB object in format:
     o {
     o     r (number) red,
     o     g (number) green,
     o     b (number) blue,
     o     hex (string) color in HTML/CSS format: #••••••
     o }
    \*/
    R.hsb2rgb = function (h, s, v, o) {
        if (this.is(h, "object") && "h" in h && "s" in h && "b" in h) {
            v = h.b;
            s = h.s;
            o = h.o;
            h = h.h;
        }
        h *= 360;
        var R, G, B, X, C;
        h = (h % 360) / 60;
        C = v * s;
        X = C * (1 - abs(h % 2 - 1));
        R = G = B = v - C;

h = ~~h;
        R += [C, X, 0, 0, X, C][h];
        G += [X, C, C, X, 0, 0][h];
        B += [0, 0, X, C, C, X][h];
        return packageRGB(R, G, B, o);
    };
    /*\
     * Raphael.hsl2rgb
     [ method ]
     **
     * Converts HSL values to RGB object.
     > Parameters
     - h (number) hue
     - s (number) saturation
     - l (number) luminosity
     = (object) RGB object in format:
     o {
     o     r (number) red,
     o     g (number) green,
     o     b (number) blue,
     o     hex (string) color in HTML/CSS format: #••••••
     o }
    \*/
    R.hsl2rgb = function (h, s, l, o) {
        if (this.is(h, "object") && "h" in h && "s" in h && "l" in h) {
            l = h.l;
            s = h.s;
            h = h.h;
        }
        if (h > 1 || s > 1 || l > 1) {
            h /= 360;
            s /= 100;
            l /= 100;
        }
        h *= 360;
        var R, G, B, X, C;
        h = (h % 360) / 60;
        C = 2 * s * (l < .5 ? l : 1 - l);
        X = C * (1 - abs(h % 2 - 1));
        R = G = B = l - C / 2;

h = ~~h;
        R += [C, X, 0, 0, X, C][h];
        G += [X, C, C, X, 0, 0][h];
        B += [0, 0, X, C, C, X][h];
        return packageRGB(R, G, B, o);
    };
    /*\
     * Raphael.rgb2hsb
     [ method ]
     **
     * Converts RGB values to HSB object.
     > Parameters
     - r (number) red
     - g (number) green
     - b (number) blue
     = (object) HSB object in format:
     o {
     o     h (number) hue
     o     s (number) saturation
     o     b (number) brightness
     o }
    \*/
    R.rgb2hsb = function (r, g, b) {
        b = prepareRGB(r, g, b);
        r = b[0];
        g = b[1];
        b = b[2];

var H, S, V, C;
        V = mmax(r, g, b);
        C = V - mmin(r, g, b);
        H = (C == 0 ? null :
             V == r ? (g - b) / C :
             V == g ? (b - r) / C + 2 :
                      (r - g) / C + 4
            );
        H = ((H + 360) % 6) * 60 / 360;
        S = C == 0 ? 0 : C / V;
        return {h: H, s: S, b: V, toString: hsbtoString};
    };
    /*\
     * Raphael.rgb2hsl
     [ method ]
     **
     * Converts RGB values to HSL object.
     > Parameters
     - r (number) red
     - g (number) green
     - b (number) blue
     = (object) HSL object in format:
     o {
     o     h (number) hue
     o     s (number) saturation
     o     l (number) luminosity
     o }
    \*/
    R.rgb2hsl = function (r, g, b) {
        b = prepareRGB(r, g, b);
        r = b[0];
        g = b[1];
        b = b[2];

var H, S, L, M, m, C;
        M = mmax(r, g, b);
        m = mmin(r, g, b);
        C = M - m;
        H = (C == 0 ? null :
             M == r ? (g - b) / C :
             M == g ? (b - r) / C + 2 :
                      (r - g) / C + 4);
        H = ((H + 360) % 6) * 60 / 360;
        L = (M + m) / 2;
        S = (C == 0 ? 0 :
             L < .5 ? C / (2 * L) :
                      C / (2 - 2 * L));
        return {h: H, s: S, l: L, toString: hsltoString};
    };
    R._path2string = function () {
        return this.join(",").replace(p2s, "$1");
    };
    function repush(array, item) {
        for (var i = 0, ii = array.length; i < ii; i++) if (array[i] === item) {
            return array.push(array.splice(i, 1)[0]);
        }
    }
    function cacher(f, scope, postprocessor) {
        function newf() {
            var arg = Array.prototype.slice.call(arguments, 0),
                args = arg.join("\u2400"),
                cache = newf.cache = newf.cache || {},
                count = newf.count = newf.count || [];
            if (cache[has](args)) {
                repush(count, args);
                return postprocessor ? postprocessor(cache[args]) : cache[args];
            }
            count.length >= 1e3 && delete cache[count.shift()];
            count.push(args);
            cache[args] = f[apply](scope, arg);
            return postprocessor ? postprocessor(cache[args]) : cache[args];
        }
        return newf;
    }

function clrToString() {
        return this.hex;
    }

/*\
     * Raphael.getRGB
     [ method ]
     **
     * Parses colour string as RGB object
     > Parameters
     - colour (string) colour string in one of formats:
     # <ul>
     #     <li>Colour name (“<code>red</code>”, “<code>green</code>”, “<code>cornflowerblue</code>”, etc)</li>
     #     <li>#••• — shortened HTML colour: (“<code>#000</code>”, “<code>#fc0</code>”, etc)</li>
     #     <li>#•••••• — full length HTML colour: (“<code>#000000</code>”, “<code>#bd2300</code>”)</li>
     #     <li>rgb(•••, •••, •••) — red, green and blue channels’ values: (“<code>rgb(200,&nbsp;100,&nbsp;0)</code>”)</li>
     #     <li>rgb(•••%, •••%, •••%) — same as above, but in %: (“<code>rgb(100%,&nbsp;175%,&nbsp;0%)</code>”)</li>
     #     <li>hsb(•••, •••, •••) — hue, saturation and brightness values: (“<code>hsb(0.5,&nbsp;0.25,&nbsp;1)</code>”)</li>
     #     <li>hsb(•••%, •••%, •••%) — same as above, but in %</li>
     #     <li>hsl(•••, •••, •••) — same as hsb</li>
     #     <li>hsl(•••%, •••%, •••%) — same as hsb</li>
     # </ul>
     = (object) RGB object in format:
     o {
     o     r (number) red,
     o     g (number) green,
     o     b (number) blue
     o     hex (string) color in HTML/CSS format: #••••••,
     o     error (boolean) true if string can’t be parsed
     o }
    \*/
    R.getRGB = cacher(function (colour) {
        if (!colour || !!((colour = Str(colour)).indexOf("-") + 1)) {
            return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: clrToString};
        }
        if (colour == "none") {
            return {r: -1, g: -1, b: -1, hex: "none", toString: clrToString};
        }
        !(hsrg[has](colour.toLowerCase().substring(0, 2)) || colour.charAt() == "#") && (colour = toHex(colour));
        var res,
            red,
            green,
            blue,
            opacity,
            t,
            values,
            rgb = colour.match(colourRegExp);
        if (rgb) {
            if (rgb[2]) {
                blue = toInt(rgb[2].substring(5), 16);
                green = toInt(rgb[2].substring(3, 5), 16);
                red = toInt(rgb[2].substring(1, 3), 16);
            }
            if (rgb[3]) {
                blue = toInt((t = rgb[3].charAt(3)) + t, 16);
                green = toInt((t = rgb[3].charAt(2)) + t, 16);
                red = toInt((t = rgb[3].charAt(1)) + t, 16);
            }
            if (rgb[4]) {
                values = rgb[4][split](commaSpaces);
                red = toFloat(values[0]);
                values[0].slice(-1) == "%" && (red *= 2.55);
                green = toFloat(values[1]);
                values[1].slice(-1) == "%" && (green *= 2.55);
                blue = toFloat(values[2]);
                values[2].slice(-1) == "%" && (blue *= 2.55);
                rgb[1].toLowerCase().slice(0, 4) == "rgba" && (opacity = toFloat(values[3]));
                values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
            }
            if (rgb[5]) {
                values = rgb[5][split](commaSpaces);
                red = toFloat(values[0]);
                values[0].slice(-1) == "%" && (red *= 2.55);
                green = toFloat(values[1]);
                values[1].slice(-1) == "%" && (green *= 2.55);
                blue = toFloat(values[2]);
                values[2].slice(-1) == "%" && (blue *= 2.55);
                (values[0].slice(-3) == "deg" || values[0].slice(-1) == "\xb0") && (red /= 360);
                rgb[1].toLowerCase().slice(0, 4) == "hsba" && (opacity = toFloat(values[3]));
                values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
                return R.hsb2rgb(red, green, blue, opacity);
            }
            if (rgb[6]) {
                values = rgb[6][split](commaSpaces);
                red = toFloat(values[0]);
                values[0].slice(-1) == "%" && (red *= 2.55);
                green = toFloat(values[1]);
                values[1].slice(-1) == "%" && (green *= 2.55);
                blue = toFloat(values[2]);
                values[2].slice(-1) == "%" && (blue *= 2.55);
                (values[0].slice(-3) == "deg" || values[0].slice(-1) == "\xb0") && (red /= 360);
                rgb[1].toLowerCase().slice(0, 4) == "hsla" && (opacity = toFloat(values[3]));
                values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
                return R.hsl2rgb(red, green, blue, opacity);
            }
            rgb = {r: red, g: green, b: blue, toString: clrToString};
            rgb.hex = "#" + (16777216 | blue | (green << 8) | (red << 16)).toString(16).slice(1);
            R.is(opacity, "finite") && (rgb.opacity = opacity);
            return rgb;
        }
        return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: clrToString};
    }, R);
    /*\
     * Raphael.hsb
     [ method ]
     **
     * Converts HSB values to hex representation of the colour.
     > Parameters
     - h (number) hue
     - s (number) saturation
     - b (number) value or brightness
     = (string) hex representation of the colour.
    \*/
    R.hsb = cacher(function (h, s, b) {
        return R.hsb2rgb(h, s, b).hex;
    });
    /*\
     * Raphael.hsl
     [ method ]
     **
     * Converts HSL values to hex representation of the colour.
     > Parameters
     - h (number) hue
     - s (number) saturation
     - l (number) luminosity
     = (string) hex representation of the colour.
    \*/
    R.hsl = cacher(function (h, s, l) {
        return R.hsl2rgb(h, s, l).hex;
    });
    /*\
     * Raphael.rgb
     [ method ]
     **
     * Converts RGB values to hex representation of the colour.
     > Parameters
     - r (number) red
     - g (number) green
     - b (number) blue
     = (string) hex representation of the colour.
    \*/
    R.rgb = cacher(function (r, g, b) {
        function round(x) { return (x + 0.5) | 0; }
        return "#" + (16777216 | round(b) | (round(g) << 8) | (round(r) << 16)).toString(16).slice(1);
    });
    /*\
     * Raphael.getColor
     [ method ]
     **
     * On each call returns next colour in the spectrum. To reset it back to red call @Raphael.getColor.reset
     > Parameters
     - value (number) #optional brightness, default is `0.75`
     = (string) hex representation of the colour.
    \*/
    R.getColor = function (value) {
        var start = this.getColor.start = this.getColor.start || {h: 0, s: 1, b: value || .75},
            rgb = this.hsb2rgb(start.h, start.s, start.b);
        start.h += .075;
        if (start.h > 1) {
            start.h = 0;
            start.s -= .2;
            start.s <= 0 && (this.getColor.start = {h: 0, s: 1, b: start.b});
        }
        return rgb.hex;
    };
    /*\
     * Raphael.getColor.reset
     [ method ]
     **
     * Resets spectrum position for @Raphael.getColor back to red.
    \*/
    R.getColor.reset = function () {
        delete this.start;
    };

// http://schepers.cc/getting-to-the-point
    function catmullRom2bezier(crp, z) {
        var d = [];
        for (var i = 0, iLen = crp.length; iLen - 2 * !z > i; i += 2) {
            var p = [
                        {x: +crp[i - 2], y: +crp[i - 1]},
                        {x: +crp[i],     y: +crp[i + 1]},
                        {x: +crp[i + 2], y: +crp[i + 3]},
                        {x: +crp[i + 4], y: +crp[i + 5]}
                    ];
            if (z) {
                if (!i) {
                    p[0] = {x: +crp[iLen - 2], y: +crp[iLen - 1]};
                } else if (iLen - 4 == i) {
                    p[3] = {x: +crp[0], y: +crp[1]};
                } else if (iLen - 2 == i) {
                    p[2] = {x: +crp[0], y: +crp[1]};
                    p[3] = {x: +crp[2], y: +crp[3]};
                }
            } else {
                if (iLen - 4 == i) {
                    p[3] = p[2];
                } else if (!i) {
                    p[0] = {x: +crp[i], y: +crp[i + 1]};
                }
            }
            d.push(["C",
                  (-p[0].x + 6 * p[1].x + p[2].x) / 6,
                  (-p[0].y + 6 * p[1].y + p[2].y) / 6,
                  (p[1].x + 6 * p[2].x - p[3].x) / 6,
                  (p[1].y + 6*p[2].y - p[3].y) / 6,
                  p[2].x,
                  p[2].y
            ]);
        }

return d;
    }
    /*\
     * Raphael.parsePathString
     [ method ]
     **
     * Utility method
     **
     * Parses given path string into an array of arrays of path segments.
     > Parameters
     - pathString (string|array) path string or array of segments (in the last case it will be returned straight away)
     = (array) array of segments.
    \*/
    R.parsePathString = function (pathString) {
        if (!pathString) {
            return null;
        }
        var pth = paths(pathString);
        if (pth.arr) {
            return pathClone(pth.arr);
        }

if (!denominator) {
            return;
        }
        var px = nx / denominator,
            py = ny / denominator,
            px2 = +px.toFixed(2),
            py2 = +py.toFixed(2);
        if (
            px2 < +mmin(x1, x2).toFixed(2) ||
            px2 > +mmax(x1, x2).toFixed(2) ||
            px2 < +mmin(x3, x4).toFixed(2) ||
            px2 > +mmax(x3, x4).toFixed(2) ||
            py2 < +mmin(y1, y2).toFixed(2) ||
            py2 > +mmax(y1, y2).toFixed(2) ||
            py2 < +mmin(y3, y4).toFixed(2) ||
            py2 > +mmax(y3, y4).toFixed(2)
        ) {
            return;
        }
        return {x: px, y: py};
    }
    function inter(bez1, bez2) {
        return interHelper(bez1, bez2);
    }
    function interCount(bez1, bez2) {
        return interHelper(bez1, bez2, 1);
    }
    function interHelper(bez1, bez2, justCount) {
        var bbox1 = R.bezierBBox(bez1),
            bbox2 = R.bezierBBox(bez2);
        if (!R.isBBoxIntersect(bbox1, bbox2)) {
            return justCount ? 0 : [];
        }
        var l1 = bezlen.apply(0, bez1),
            l2 = bezlen.apply(0, bez2),
            n1 = mmax(~~(l1 / 5), 1),
            n2 = mmax(~~(l2 / 5), 1),
            dots1 = [],
            dots2 = [],
            xy = {},
            res = justCount ? 0 : [];
        for (var i = 0; i < n1 + 1; i++) {
            var p = R.findDotsAtSegment.apply(R, bez1.concat(i / n1));
            dots1.push({x: p.x, y: p.y, t: i / n1});
        }
        for (i = 0; i < n2 + 1; i++) {
            p = R.findDotsAtSegment.apply(R, bez2.concat(i / n2));
            dots2.push({x: p.x, y: p.y, t: i / n2});
        }
        for (i = 0; i < n1; i++) {
            for (var j = 0; j < n2; j++) {
                var di = dots1[i],
                    di1 = dots1[i + 1],
                    dj = dots2[j],
                    dj1 = dots2[j + 1],
                    ci = abs(di1.x - di.x) < .001 ? "y" : "x",
                    cj = abs(dj1.x - dj.x) < .001 ? "y" : "x",
                    is = intersect(di.x, di.y, di1.x, di1.y, dj.x, dj.y, dj1.x, dj1.y);
                if (is) {
                    if (xy[is.x.toFixed(4)] == is.y.toFixed(4)) {
                        continue;
                    }
                    xy[is.x.toFixed(4)] = is.y.toFixed(4);
                    var t1 = di.t + abs((is[ci] - di[ci]) / (di1[ci] - di[ci])) * (di1.t - di.t),
                        t2 = dj.t + abs((is[cj] - dj[cj]) / (dj1[cj] - dj[cj])) * (dj1.t - dj.t);
                    if (t1 >= 0 && t1 <= 1.001 && t2 >= 0 && t2 <= 1.001) {
                        if (justCount) {
                            res++;
                        } else {
                            res.push({
                                x: is.x,
                                y: is.y,
                                t1: mmin(t1, 1),
                                t2: mmin(t2, 1)
                            });
                        }
                    }
                }
            }
        }
        return res;
    }
    /*\
     * Raphael.pathIntersection
     [ method ]
     **
     * Utility method
     **
     * Finds intersections of two paths
     > Parameters
     - path1 (string) path string
     - path2 (string) path string
     = (array) dots of intersection
     o [
     o     {
     o         x: (number) x coordinate of the point
     o         y: (number) y coordinate of the point
     o         t1: (number) t value for segment of path1
     o         t2: (number) t value for segment of path2
     o         segment1: (number) order number for segment of path1
     o         segment2: (number) order number for segment of path2
     o         bez1: (array) eight coordinates representing beziér curve for the segment of path1
     o         bez2: (array) eight coordinates representing beziér curve for the segment of path2
     o     }
     o ]
    \*/
    R.pathIntersection = function (path1, path2) {
        return interPathHelper(path1, path2);
    };
    R.pathIntersectionNumber = function (path1, path2) {
        return interPathHelper(path1, path2, 1);
    };
    function interPathHelper(path1, path2, justCount) {
        path1 = R._path2curve(path1);
        path2 = R._path2curve(path2);
        var x1, y1, x2, y2, x1m, y1m, x2m, y2m, bez1, bez2,
            res = justCount ? 0 : [];
        for (var i = 0, ii = path1.length; i < ii; i++) {
            var pi = path1[i];
            if (pi[0] == "M") {
                x1 = x1m = pi[1];
                y1 = y1m = pi[2];
            } else {
                if (pi[0] == "C") {
                    bez1 = [x1, y1].concat(pi.slice(1));
                    x1 = bez1[6];
                    y1 = bez1[7];
                } else {
                    bez1 = [x1, y1, x1, y1, x1m, y1m, x1m, y1m];
                    x1 = x1m;
                    y1 = y1m;
                }
                for (var j = 0, jj = path2.length; j < jj; j++) {
                    var pj = path2[j];
                    if (pj[0] == "M") {
                        x2 = x2m = pj[1];
                        y2 = y2m = pj[2];
                    } else {
                        if (pj[0] == "C") {
                            bez2 = [x2, y2].concat(pj.slice(1));
                            x2 = bez2[6];
                            y2 = bez2[7];
                        } else {
                            bez2 = [x2, y2, x2, y2, x2m, y2m, x2m, y2m];
                            x2 = x2m;
                            y2 = y2m;
                        }
                        var intr = interHelper(bez1, bez2, justCount);
                        if (justCount) {
                            res += intr;
                        } else {
                            for (var k = 0, kk = intr.length; k < kk; k++) {
                                intr[k].segment1 = i;
                                intr[k].segment2 = j;
                                intr[k].bez1 = bez1;
                                intr[k].bez2 = bez2;
                            }
                            res = res.concat(intr);
                        }
                    }
                }
            }
        }
        return res;
    }
    /*\
     * Raphael.isPointInsidePath
     [ method ]
     **
     * Utility method
     **
     * Returns `true` if given point is inside a given closed path.
     > Parameters
     - path (string) path string
     - x (number) x of the point
     - y (number) y of the point
     = (boolean) true, if point is inside the path
    \*/
    R.isPointInsidePath = function (path, x, y) {
        var bbox = R.pathBBox(path);
        return R.isPointInsideBBox(bbox, x, y) &&
               interPathHelper(path, [["M", x, y], ["H", bbox.x2 + 10]], 1) % 2 == 1;
    };
    R._removedFactory = function (methodname) {
        return function () {
            eve("raphael.log", null, "Rapha\xebl: you are calling to method \u201c" + methodname + "\u201d of removed object", methodname);
        };
    };
    /*\
     * Raphael.pathBBox
     [ method ]
     **
     * Utility method
     **
     * Return bounding box of a given path
     > Parameters
     - path (string) path string
     = (object) bounding box
     o {
     o     x: (number) x coordinate of the left top point of the box
     o     y: (number) y coordinate of the left top point of the box
     o     x2: (number) x coordinate of the right bottom point of the box
     o     y2: (number) y coordinate of the right bottom point of the box
     o     width: (number) width of the box
     o     height: (number) height of the box
     o     cx: (number) x coordinate of the center of the box
     o     cy: (number) y coordinate of the center of the box
     o }
    \*/
    var pathDimensions = R.pathBBox = function (path) {
        var pth = paths(path);
        if (pth.bbox) {
            return clone(pth.bbox);
        }
        if (!path) {
            return {x: 0, y: 0, width: 0, height: 0, x2: 0, y2: 0};
        }
        path = path2curve(path);
        var x = 0,
            y = 0,
            X = [],
            Y = [],
            p;
        for (var i = 0, ii = path.length; i < ii; i++) {
            p = path[i];
            if (p[0] == "M") {
                x = p[1];
                y = p[2];
                X.push(x);
                Y.push(y);
            } else {
                var dim = curveDim(x, y, p[1], p[2], p[3], p[4], p[5], p[6]);
                X = X[concat](dim.min.x, dim.max.x);
                Y = Y[concat](dim.min.y, dim.max.y);
                x = p[5];
                y = p[6];
            }
        }
        var xmin = mmin[apply](0, X),
            ymin = mmin[apply](0, Y),
            xmax = mmax[apply](0, X),
            ymax = mmax[apply](0, Y),
            width = xmax - xmin,
            height = ymax - ymin,
                bb = {
                x: xmin,
                y: ymin,
                x2: xmax,
                y2: ymax,
                width: width,
                height: height,
                cx: xmin + width / 2,
                cy: ymin + height / 2
            };
        pth.bbox = clone(bb);
        return bb;
    },
        pathClone = function (pathArray) {
            var res = clone(pathArray);
            res.toString = R._path2string;
            return res;
        },
        pathToRelative = R._pathToRelative = function (pathArray) {
            var pth = paths(pathArray);
            if (pth.rel) {
                return pathClone(pth.rel);
            }
            if (!R.is(pathArray, array) || !R.is(pathArray && pathArray[0], array)) { // rough assumption
                pathArray = R.parsePathString(pathArray);
            }
            var res = [],
                x = 0,
                y = 0,
                mx = 0,
                my = 0,
                start = 0;
            if (pathArray[0][0] == "M") {
                x = pathArray[0][1];
                y = pathArray[0][2];
                mx = x;
                my = y;
                start++;
                res.push(["M", x, y]);
            }
            for (var i = start, ii = pathArray.length; i < ii; i++) {
                var r = res[i] = [],
                    pa = pathArray[i];
                if (pa[0] != lowerCase.call(pa[0])) {
                    r[0] = lowerCase.call(pa[0]);
                    switch (r[0]) {
                        case "a":
                            r[1] = pa[1];
                            r[2] = pa[2];
                            r[3] = pa[3];
                            r[4] = pa[4];
                            r[5] = pa[5];
                            r[6] = +(pa[6] - x).toFixed(3);
                            r[7] = +(pa[7] - y).toFixed(3);
                            break;
                        case "v":
                            r[1] = +(pa[1] - y).toFixed(3);
                            break;
                        case "m":
                            mx = pa[1];
                            my = pa[2];
                        default:
                            for (var j = 1, jj = pa.length; j < jj; j++) {
                                r[j] = +(pa[j] - ((j % 2) ? x : y)).toFixed(3);
                            }
                    }
                } else {
                    r = res[i] = [];
                    if (pa[0] == "m") {
                        mx = pa[1] + x;
                        my = pa[2] + y;
                    }
                    for (var k = 0, kk = pa.length; k < kk; k++) {
                        res[i][k] = pa[k];
                    }
                }
                var len = res[i].length;
                switch (res[i][0]) {
                    case "z":
                        x = mx;
                        y = my;
                        break;
                    case "h":
                        x += +res[i][len - 1];
                        break;
                    case "v":
                        y += +res[i][len - 1];
                        break;
                    default:
                        x += +res[i][len - 2];
                        y += +res[i][len - 1];
                }
            }
            res.toString = R._path2string;
            pth.rel = pathClone(res);
            return res;
        },
        pathToAbsolute = R._pathToAbsolute = function (pathArray) {
            var pth = paths(pathArray);
            if (pth.abs) {
                return pathClone(pth.abs);
            }
            if (!R.is(pathArray, array) || !R.is(pathArray && pathArray[0], array)) { // rough assumption
                pathArray = R.parsePathString(pathArray);
            }
            if (!pathArray || !pathArray.length) {
                return [["M", 0, 0]];
            }
            var res = [],
                x = 0,
                y = 0,
                mx = 0,
                my = 0,
                start = 0;
            if (pathArray[0][0] == "M") {
                x = +pathArray[0][1];
                y = +pathArray[0][2];
                mx = x;
                my = y;
                start++;
                res[0] = ["M", x, y];
            }
            var crz = pathArray.length == 3 && pathArray[0][0] == "M" && pathArray[1][0].toUpperCase() == "R" && pathArray[2][0].toUpperCase() == "Z";
            for (var r, pa, i = start, ii = pathArray.length; i < ii; i++) {
                res.push(r = []);
                pa = pathArray[i];
                if (pa[0] != upperCase.call(pa[0])) {
                    r[0] = upperCase.call(pa[0]);
                    switch (r[0]) {
                        case "A":
                            r[1] = pa[1];
                            r[2] = pa[2];
                            r[3] = pa[3];
                            r[4] = pa[4];
                            r[5] = pa[5];
                            r[6] = +(pa[6] + x);
                            r[7] = +(pa[7] + y);
                            break;
                        case "V":
                            r[1] = +pa[1] + y;
                            break;
                        case "H":
                            r[1] = +pa[1] + x;
                            break;
                        case "R":
                            var dots = [x, y][concat](pa.slice(1));
                            for (var j = 2, jj = dots.length; j < jj; j++) {
                                dots[j] = +dots[j] + x;
                                dots[++j] = +dots[j] + y;
                            }
                            res.pop();
                            res = res[concat](catmullRom2bezier(dots, crz));
                            break;
                        case "M":
                            mx = +pa[1] + x;
                            my = +pa[2] + y;
                        default:
                            for (j = 1, jj = pa.length; j < jj; j++) {
                                r[j] = +pa[j] + ((j % 2) ? x : y);
                            }
                    }
                } else if (pa[0] == "R") {
                    dots = [x, y][concat](pa.slice(1));
                    res.pop();
                    res = res[concat](catmullRom2bezier(dots, crz));
                    r = ["R"][concat](pa.slice(-2));
                } else {
                    for (var k = 0, kk = pa.length; k < kk; k++) {
                        r[k] = pa[k];
                    }
                }
                switch (r[0]) {
                    case "Z":
                        x = mx;
                        y = my;
                        break;
                    case "H":
                        x = r[1];
                        break;
                    case "V":
                        y = r[1];
                        break;
                    case "M":
                        mx = r[r.length - 2];
                        my = r[r.length - 1];
                    default:
                        x = r[r.length - 2];
                        y = r[r.length - 1];
                }
            }
            res.toString = R._path2string;
            pth.abs = pathClone(res);
            return res;
        },
        l2c = function (x1, y1, x2, y2) {
            return [x1, y1, x2, y2, x2, y2];
        },
        q2c = function (x1, y1, ax, ay, x2, y2) {
            var _13 = 1 / 3,
                _23 = 2 / 3;
            return [
                    _13 * x1 + _23 * ax,
                    _13 * y1 + _23 * ay,
                    _13 * x2 + _23 * ax,
                    _13 * y2 + _23 * ay,
                    x2,
                    y2
                ];
        },
        a2c = function (x1, y1, rx, ry, angle, large_arc_flag, sweep_flag, x2, y2, recursive) {
            // for more information of where this math came from visit:
            // http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
            var _120 = PI * 120 / 180,
                rad = PI / 180 * (+angle || 0),
                res = [],
                xy,
                rotate = cacher(function (x, y, rad) {
                    var X = x * math.cos(rad) - y * math.sin(rad),
                        Y = x * math.sin(rad) + y * math.cos(rad);
                    return {x: X, y: Y};
                });
            if (!recursive) {
                xy = rotate(x1, y1, -rad);
                x1 = xy.x;
                y1 = xy.y;
                xy = rotate(x2, y2, -rad);
                x2 = xy.x;
                y2 = xy.y;
                var cos = math.cos(PI / 180 * angle),
                    sin = math.sin(PI / 180 * angle),
                    x = (x1 - x2) / 2,
                    y = (y1 - y2) / 2;
                var h = (x * x) / (rx * rx) + (y * y) / (ry * ry);
                if (h > 1) {
                    h = math.sqrt(h);
                    rx = h * rx;
                    ry = h * ry;
                }
                var rx2 = rx * rx,
                    ry2 = ry * ry,
                    k = (large_arc_flag == sweep_flag ? -1 : 1) *
                        math.sqrt(abs((rx2 * ry2 - rx2 * y * y - ry2 * x * x) / (rx2 * y * y + ry2 * x * x))),
                    cx = k * rx * y / ry + (x1 + x2) / 2,
                    cy = k * -ry * x / rx + (y1 + y2) / 2,
                    f1 = math.asin(((y1 - cy) / ry).toFixed(9)),
                    f2 = math.asin(((y2 - cy) / ry).toFixed(9));

f1 = x1 < cx ? PI - f1 : f1;
                f2 = x2 < cx ? PI - f2 : f2;
                f1 < 0 && (f1 = PI * 2 + f1);
                f2 < 0 && (f2 = PI * 2 + f2);
                if (sweep_flag && f1 > f2) {
                    f1 = f1 - PI * 2;
                }
                if (!sweep_flag && f2 > f1) {
                    f2 = f2 - PI * 2;
                }
            } else {
                f1 = recursive[0];
                f2 = recursive[1];
                cx = recursive[2];
                cy = recursive[3];
            }
            var df = f2 - f1;
            if (abs(df) > _120) {
                var f2old = f2,
                    x2old = x2,
                    y2old = y2;
                f2 = f1 + _120 * (sweep_flag && f2 > f1 ? 1 : -1);
                x2 = cx + rx * math.cos(f2);
                y2 = cy + ry * math.sin(f2);
                res = a2c(x2, y2, rx, ry, angle, 0, sweep_flag, x2old, y2old, [f2, f2old, cx, cy]);
            }
            df = f2 - f1;
            var c1 = math.cos(f1),
                s1 = math.sin(f1),
                c2 = math.cos(f2),
                s2 = math.sin(f2),
                t = math.tan(df / 4),
                hx = 4 / 3 * rx * t,
                hy = 4 / 3 * ry * t,
                m1 = [x1, y1],
                m2 = [x1 + hx * s1, y1 - hy * c1],
                m3 = [x2 + hx * s2, y2 - hy * c2],
                m4 = [x2, y2];
            m2[0] = 2 * m1[0] - m2[0];
            m2[1] = 2 * m1[1] - m2[1];
            if (recursive) {
                return [m2, m3, m4][concat](res);
            } else {
                res = [m2, m3, m4][concat](res).join()[split](",");
                var newres = [];
                for (var i = 0, ii = res.length; i < ii; i++) {
                    newres[i] = i % 2 ? rotate(res[i - 1], res[i], rad).y : rotate(res[i], res[i + 1], rad).x;
                }
                return newres;
            }
        },
        findDotAtSegment = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t) {
            var t1 = 1 - t;
            return {
                x: pow(t1, 3) * p1x + pow(t1, 2) * 3 * t * c1x + t1 * 3 * t * t * c2x + pow(t, 3) * p2x,
                y: pow(t1, 3) * p1y + pow(t1, 2) * 3 * t * c1y + t1 * 3 * t * t * c2y + pow(t, 3) * p2y
            };
        },
        curveDim = cacher(function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y) {
            var a = (c2x - 2 * c1x + p1x) - (p2x - 2 * c2x + c1x),
                b = 2 * (c1x - p1x) - 2 * (c2x - c1x),
                c = p1x - c1x,
                t1 = (-b + math.sqrt(b * b - 4 * a * c)) / 2 / a,
                t2 = (-b - math.sqrt(b * b - 4 * a * c)) / 2 / a,
                y = [p1y, p2y],
                x = [p1x, p2x],
                dot;
            abs(t1) > "1e12" && (t1 = .5);
            abs(t2) > "1e12" && (t2 = .5);
            if (t1 > 0 && t1 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t1);
                x.push(dot.x);
                y.push(dot.y);
            }
            if (t2 > 0 && t2 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t2);
                x.push(dot.x);
                y.push(dot.y);
            }
            a = (c2y - 2 * c1y + p1y) - (p2y - 2 * c2y + c1y);
            b = 2 * (c1y - p1y) - 2 * (c2y - c1y);
            c = p1y - c1y;
            t1 = (-b + math.sqrt(b * b - 4 * a * c)) / 2 / a;
            t2 = (-b - math.sqrt(b * b - 4 * a * c)) / 2 / a;
            abs(t1) > "1e12" && (t1 = .5);
            abs(t2) > "1e12" && (t2 = .5);
            if (t1 > 0 && t1 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t1);
                x.push(dot.x);
                y.push(dot.y);
            }
            if (t2 > 0 && t2 < 1) {
                dot = findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t2);
                x.push(dot.x);
                y.push(dot.y);
            }
            return {
                min: {x: mmin[apply](0, x), y: mmin[apply](0, y)},
                max: {x: mmax[apply](0, x), y: mmax[apply](0, y)}
            };
        }),
        path2curve = R._path2curve = cacher(function (path, path2) {
            var pth = !path2 && paths(path);
            if (!path2 && pth.curve) {
                return pathClone(pth.curve);
            }
            var p = pathToAbsolute(path),
                p2 = path2 && pathToAbsolute(path2),
                attrs = {x: 0, y: 0, bx: 0, by: 0, X: 0, Y: 0, qx: null, qy: null},
                attrs2 = {x: 0, y: 0, bx: 0, by: 0, X: 0, Y: 0, qx: null, qy: null},
                processPath = function (path, d, pcom) {
                    var nx, ny, tq = {T:1, Q:1};
                    if (!path) {
                        return ["C", d.x, d.y, d.x, d.y, d.x, d.y];
                    }
                    !(path[0] in tq) && (d.qx = d.qy = null);
                    switch (path[0]) {
                        case "M":
                            d.X = path[1];
                            d.Y = path[2];
                            break;
                        case "A":
                            path = ["C"][concat](a2c[apply](0, [d.x, d.y][concat](path.slice(1))));
                            break;
                        case "S":
                            if (pcom == "C" || pcom == "S") { // In "S" case we have to take into account, if the previous command is C/S.
                                nx = d.x * 2 - d.bx;          // And reflect the previous
                                ny = d.y * 2 - d.by;          // command's control point relative to the current point.
                            }
                            else {                            // or some else or nothing
                                nx = d.x;
                                ny = d.y;
                            }
                            path = ["C", nx, ny][concat](path.slice(1));
                            break;
                        case "T":
                            if (pcom == "Q" || pcom == "T") { // In "T" case we have to take into account, if the previous command is Q/T.
                                d.qx = d.x * 2 - d.qx;        // And make a reflection similar
                                d.qy = d.y * 2 - d.qy;        // to case "S".
                            }
                            else {                            // or something else or nothing
                                d.qx = d.x;
                                d.qy = d.y;
                            }
                            path = ["C"][concat](q2c(d.x, d.y, d.qx, d.qy, path[1], path[2]));
                            break;
                        case "Q":
                            d.qx = path[1];
                            d.qy = path[2];
                            path = ["C"][concat](q2c(d.x, d.y, path[1], path[2], path[3], path[4]));
                            break;
                        case "L":
                            path = ["C"][concat](l2c(d.x, d.y, path[1], path[2]));
                            break;
                        case "H":
                            path = ["C"][concat](l2c(d.x, d.y, path[1], d.y));
                            break;
                        case "V":
                            path = ["C"][concat](l2c(d.x, d.y, d.x, path[1]));
                            break;
                        case "Z":
                            path = ["C"][concat](l2c(d.x, d.y, d.X, d.Y));
                            break;
                    }
                    return path;
                },
                fixArc = function (pp, i) {
                    if (pp[i].length > 7) {
                        pp[i].shift();
                        var pi = pp[i];
                        while (pi.length) {
                            pcoms1[i]="A"; // if created multiple C:s, their original seg is saved
                            p2 && (pcoms2[i]="A"); // the same as above
                            pp.splice(i++, 0, ["C"][concat](pi.splice(0, 6)));
                        }
                        pp.splice(i, 1);
                        ii = mmax(p.length, p2 && p2.length || 0);
                    }
                },
                fixM = function (path1, path2, a1, a2, i) {
                    if (path1 && path2 && path1[i][0] == "M" && path2[i][0] != "M") {
                        path2.splice(i, 0, ["M", a2.x, a2.y]);
                        a1.bx = 0;
                        a1.by = 0;
                        a1.x = path1[i][1];
                        a1.y = path1[i][2];
                        ii = mmax(p.length, p2 && p2.length || 0);
                    }
                },
                pcoms1 = [], // path commands of original path p
                pcoms2 = [], // path commands of original path p2
                pfirst = "", // temporary holder for original path command
                pcom = ""; // holder for previous path command of original path
            for (var i = 0, ii = mmax(p.length, p2 && p2.length || 0); i < ii; i++) {
                p[i] && (pfirst = p[i][0]); // save current path command

if (pfirst != "C") // C is not saved yet, because it may be result of conversion
                {
                    pcoms1[i] = pfirst; // Save current path command
                    i && ( pcom = pcoms1[i-1]); // Get previous path command pcom
                }
                p[i] = processPath(p[i], attrs, pcom); // Previous path command is inputted to processPath

if (pcoms1[i] != "A" && pfirst == "C") pcoms1[i] = "C"; // A is the only command
                // which may produce multiple C:s
                // so we have to make sure that C is also C in original path

fixArc(p, i); // fixArc adds also the right amount of A:s to pcoms1

if (p2) { // the same procedures is done to p2
                    p2[i] && (pfirst = p2[i][0]);
                    if (pfirst != "C")
                    {
                        pcoms2[i] = pfirst;
                        i && (pcom = pcoms2[i-1]);
                    }
                    p2[i] = processPath(p2[i], attrs2, pcom);

if (pcoms2[i]!="A" && pfirst=="C") pcoms2[i]="C";

fixArc(p2, i);
                }
                fixM(p, p2, attrs, attrs2, i);
                fixM(p2, p, attrs2, attrs, i);
                var seg = p[i],
                    seg2 = p2 && p2[i],
                    seglen = seg.length,
                    seg2len = p2 && seg2.length;
                attrs.x = seg[seglen - 2];
                attrs.y = seg[seglen - 1];
                attrs.bx = toFloat(seg[seglen - 4]) || attrs.x;
                attrs.by = toFloat(seg[seglen - 3]) || attrs.y;
                attrs2.bx = p2 && (toFloat(seg2[seg2len - 4]) || attrs2.x);
                attrs2.by = p2 && (toFloat(seg2[seg2len - 3]) || attrs2.y);
                attrs2.x = p2 && seg2[seg2len - 2];
                attrs2.y = p2 && seg2[seg2len - 1];
            }
            if (!p2) {
                pth.curve = pathClone(p);
            }
            return p2 ? [p, p2] : p;
        }, null, pathClone),
        parseDots = R._parseDots = cacher(function (gradient) {
            var dots = [];
            for (var i = 0, ii = gradient.length; i < ii; i++) {
                var dot = {},
                    par = gradient[i].match(/^([^:]*):?([\d\.]*)/);
                dot.color = R.getRGB(par[1]);
                if (dot.color.error) {
                    return null;
                }
                dot.opacity = dot.color.opacity;
                dot.color = dot.color.hex;
                par[2] && (dot.offset = par[2] + "%");
                dots.push(dot);
            }
            for (i = 1, ii = dots.length - 1; i < ii; i++) {
                if (!dots[i].offset) {
                    var start = toFloat(dots[i - 1].offset || 0),
                        end = 0;
                    for (var j = i + 1; j < ii; j++) {
                        if (dots[j].offset) {
                            end = dots[j].offset;
                            break;
                        }
                    }
                    if (!end) {
                        end = 100;
                        j = ii;
                    }
                    end = toFloat(end);
                    var d = (end - start) / (j - i + 1);
                    for (; i < j; i++) {
                        start += d;
                        dots[i].offset = start + "%";
                    }
                }
            }
            return dots;
        }),
        tear = R._tear = function (el, paper) {
            el == paper.top && (paper.top = el.prev);
            el == paper.bottom && (paper.bottom = el.next);
            el.next && (el.next.prev = el.prev);
            el.prev && (el.prev.next = el.next);
        },
        tofront = R._tofront = function (el, paper) {
            if (paper.top === el) {
                return;
            }
            tear(el, paper);
            el.next = null;
            el.prev = paper.top;
            paper.top.next = el;
            paper.top = el;
        },
        toback = R._toback = function (el, paper) {
            if (paper.bottom === el) {
                return;
            }
            tear(el, paper);
            el.next = paper.bottom;
            el.prev = null;
            paper.bottom.prev = el;
            paper.bottom = el;
        },
        insertafter = R._insertafter = function (el, el2, paper) {
            tear(el, paper);
            el2 == paper.top && (paper.top = el);
            el2.next && (el2.next.prev = el);
            el.next = el2.next;
            el.prev = el2;
            el2.next = el;
        },
        insertbefore = R._insertbefore = function (el, el2, paper) {
            tear(el, paper);
            el2 == paper.bottom && (paper.bottom = el);
            el2.prev && (el2.prev.next = el);
            el.prev = el2.prev;
            el2.prev = el;
            el.next = el2;
        },
        /*\
         * Raphael.toMatrix
         [ method ]
         **
         * Utility method
         **
         * Returns matrix of transformations applied to a given path
         > Parameters
         - path (string) path string
         - transform (string|array) transformation string
         = (object) @Matrix
        \*/
        toMatrix = R.toMatrix = function (path, transform) {
            var bb = pathDimensions(path),
                el = {
                    _: {
                        transform: E
                    },
                    getBBox: function () {
                        return bb;
                    }
                };
            extractTransform(el, transform);
            return el.matrix;
        },
        /*\
         * Raphael.transformPath
         [ method ]
         **
         * Utility method
         **
         * Returns path transformed by a given transformation
         > Parameters
         - path (string) path string
         - transform (string|array) transformation string
         = (string) path
        \*/
        transformPath = R.transformPath = function (path, transform) {
            return mapPath(path, toMatrix(path, transform));
        },
        extractTransform = R._extractTransform = function (el, tstr) {
            if (tstr == null) {
                return el._.transform;
            }
            tstr = Str(tstr).replace(/\.{3}|\u2026/g, el._.transform || E);
            var tdata = R.parseTransformString(tstr),
                deg = 0,
                dx = 0,
                dy = 0,
                sx = 1,
                sy = 1,
                _ = el._,
                m = new Matrix;
            _.transform = tdata || [];
            if (tdata) {
                for (var i = 0, ii = tdata.length; i < ii; i++) {
                    var t = tdata[i],
                        tlen = t.length,
                        command = Str(t[0]).toLowerCase(),
                        absolute = t[0] != command,
                        inver = absolute ? m.invert() : 0,
                        x1,
                        y1,
                        x2,
                        y2,
                        bb;
                    if (command == "t" && tlen == 3) {
                        if (absolute) {
                            x1 = inver.x(0, 0);
                            y1 = inver.y(0, 0);
                            x2 = inver.x(t[1], t[2]);
                            y2 = inver.y(t[1], t[2]);
                            m.translate(x2 - x1, y2 - y1);
                        } else {
                            m.translate(t[1], t[2]);
                        }
                    } else if (command == "r") {
                        if (tlen == 2) {
                            bb = bb || el.getBBox(1);
                            m.rotate(t[1], bb.x + bb.width / 2, bb.y + bb.height / 2);
                            deg += t[1];
                        } else if (tlen == 4) {
                            if (absolute) {
                                x2 = inver.x(t[2], t[3]);
                                y2 = inver.y(t[2], t[3]);
                                m.rotate(t[1], x2, y2);
                            } else {
                                m.rotate(t[1], t[2], t[3]);
                            }
                            deg += t[1];
                        }
                    } else if (command == "s") {
                        if (tlen == 2 || tlen == 3) {
                            bb = bb || el.getBBox(1);
                            m.scale(t[1], t[tlen - 1], bb.x + bb.width / 2, bb.y + bb.height / 2);
                            sx *= t[1];
                            sy *= t[tlen - 1];
                        } else if (tlen == 5) {
                            if (absolute) {
                                x2 = inver.x(t[3], t[4]);
                                y2 = inver.y(t[3], t[4]);
                                m.scale(t[1], t[2], x2, y2);
                            } else {
                                m.scale(t[1], t[2], t[3], t[4]);
                            }
                            sx *= t[1];
                            sy *= t[2];
                        }
                    } else if (command == "m" && tlen == 7) {
                        m.add(t[1], t[2], t[3], t[4], t[5], t[6]);
                    }
                    _.dirtyT = 1;
                    el.matrix = m;
                }
            }

/*\
             * Element.matrix
             [ property (object) ]
             **
             * Keeps @Matrix object, which represents element transformation
            \*/
            el.matrix = m;

_.sx = sx;
            _.sy = sy;
            _.deg = deg;
            _.dx = dx = m.e;
            _.dy = dy = m.f;

if (sx == 1 && sy == 1 && !deg && _.bbox) {
                _.bbox.x += +dx;
                _.bbox.y += +dy;
            } else {
                _.dirtyT = 1;
            }
        },
        getEmpty = function (item) {
            var l = item[0];
            switch (l.toLowerCase()) {
                case "t": return [l, 0, 0];
                case "m": return [l, 1, 0, 0, 1, 0, 0];
                case "r": if (item.length == 4) {
                    return [l, 0, item[2], item[3]];
                } else {
                    return [l, 0];
                }
                case "s": if (item.length == 5) {
                    return [l, 1, 1, item[3], item[4]];
                } else if (item.length == 3) {
                    return [l, 1, 1];
                } else {
                    return [l, 1];
                }
            }
        },
        equaliseTransform = R._equaliseTransform = function (t1, t2) {
            t2 = Str(t2).replace(/\.{3}|\u2026/g, t1);
            t1 = R.parseTransformString(t1) || [];
            t2 = R.parseTransformString(t2) || [];
            var maxlength = mmax(t1.length, t2.length),
                from = [],
                to = [],
                i = 0, j, jj,
                tt1, tt2;
            for (; i < maxlength; i++) {
                tt1 = t1[i] || getEmpty(t2[i]);
                tt2 = t2[i] || getEmpty(tt1);
                if ((tt1[0] != tt2[0]) ||
                    (tt1[0].toLowerCase() == "r" && (tt1[2] != tt2[2] || tt1[3] != tt2[3])) ||
                    (tt1[0].toLowerCase() == "s" && (tt1[3] != tt2[3] || tt1[4] != tt2[4]))
                    ) {
                    return;
                }
                from[i] = [];
                to[i] = [];
                for (j = 0, jj = mmax(tt1.length, tt2.length); j < jj; j++) {
                    j in tt1 && (from[i][j] = tt1[j]);
                    j in tt2 && (to[i][j] = tt2[j]);
                }
            }
            return {
                from: from,
                to: to
            };
        };
    R._getContainer = function (x, y, w, h) {
        var container;
        container = h == null && !R.is(x, "object") ? g.doc.getElementById(x) : x;
        if (container == null) {
            return;
        }
        if (container.tagName) {
            if (y == null) {
                return {
                    container: container,
                    width: container.style.pixelWidth || container.offsetWidth,
                    height: container.style.pixelHeight || container.offsetHeight
                };
            } else {
                return {
                    container: container,
                    width: y,
                    height: w
                };
            }
        }
        return {
            container: 1,
            x: x,
            y: y,
            width: w,
            height: h
        };
    };
    /*\
     * Raphael.pathToRelative
     [ method ]
     **
     * Utility method
     **
     * Converts path to relative form
     > Parameters
     - pathString (string|array) path string or array of segments
     = (array) array of segments.
    \*/
    R.pathToRelative = pathToRelative;
    R._engine = {};
    /*\
     * Raphael.path2curve
     [ method ]
     **
     * Utility method
     **
     * Converts path to a new path where all segments are cubic bezier curves.
     > Parameters
     - pathString (string|array) path string or array of segments
     = (array) array of segments.
    \*/
    R.path2curve = path2curve;
    /*\
     * Raphael.matrix
     [ method ]
     **
     * Utility method
     **
     * Returns matrix based on given parameters.
     > Parameters
     - a (number)
     - b (number)
     - c (number)
     - d (number)
     - e (number)
     - f (number)
     = (object) @Matrix
    \*/
    R.matrix = function (a, b, c, d, e, f) {
        return new Matrix(a, b, c, d, e, f);
    };
    function Matrix(a, b, c, d, e, f) {
        if (a != null) {
            this.a = +a;
            this.b = +b;
            this.c = +c;
            this.d = +d;
            this.e = +e;
            this.f = +f;
        } else {
            this.a = 1;
            this.b = 0;
            this.c = 0;
            this.d = 1;
            this.e = 0;
            this.f = 0;
        }
    }
    (function (matrixproto) {
        /*\
         * Matrix.add
         [ method ]
         **
         * Adds given matrix to existing one.
         > Parameters
         - a (number)
         - b (number)
         - c (number)
         - d (number)
         - e (number)
         - f (number)
         or
         - matrix (object) @Matrix
        \*/
        matrixproto.add = function (a, b, c, d, e, f) {
            var out = [[], [], []],
                m = [[this.a, this.c, this.e], [this.b, this.d, this.f], [0, 0, 1]],
                matrix = [[a, c, e], [b, d, f], [0, 0, 1]],
                x, y, z, res;

if (a && a instanceof Matrix) {
                matrix = [[a.a, a.c, a.e], [a.b, a.d, a.f], [0, 0, 1]];
            }

for (x = 0; x < 3; x++) {
                for (y = 0; y < 3; y++) {
                    res = 0;
                    for (z = 0; z < 3; z++) {
                        res += m[x][z] * matrix[z][y];
                    }
                    out[x][y] = res;
                }
            }
            this.a = out[0][0];
            this.b = out[1][0];
            this.c = out[0][1];
            this.d = out[1][1];
            this.e = out[0][2];
            this.f = out[1][2];
        };
        /*\
         * Matrix.invert
         [ method ]
         **
         * Returns inverted version of the matrix
         = (object) @Matrix
        \*/
        matrixproto.invert = function () {
            var me = this,
                x = me.a * me.d - me.b * me.c;
            return new Matrix(me.d / x, -me.b / x, -me.c / x, me.a / x, (me.c * me.f - me.d * me.e) / x, (me.b * me.e - me.a * me.f) / x);
        };
        /*\
         * Matrix.clone
         [ method ]
         **
         * Returns copy of the matrix
         = (object) @Matrix
        \*/
        matrixproto.clone = function () {
            return new Matrix(this.a, this.b, this.c, this.d, this.e, this.f);
        };
        /*\
         * Matrix.translate
         [ method ]
         **
         * Translate the matrix
         > Parameters
         - x (number)
         - y (number)
        \*/
        matrixproto.translate = function (x, y) {
            this.add(1, 0, 0, 1, x, y);
        };
        /*\
         * Matrix.scale
         [ method ]
         **
         * Scales the matrix
         > Parameters
         - x (number)
         - y (number) #optional
         - cx (number) #optional
         - cy (number) #optional
        \*/
        matrixproto.scale = function (x, y, cx, cy) {
            y == null && (y = x);
            (cx || cy) && this.add(1, 0, 0, 1, cx, cy);
            this.add(x, 0, 0, y, 0, 0);
            (cx || cy) && this.add(1, 0, 0, 1, -cx, -cy);
        };
        /*\
         * Matrix.rotate
         [ method ]
         **
         * Rotates the matrix
         > Parameters
         - a (number)
         - x (number)
         - y (number)
        \*/
        matrixproto.rotate = function (a, x, y) {
            a = R.rad(a);
            x = x || 0;
            y = y || 0;
            var cos = +math.cos(a).toFixed(9),
                sin = +math.sin(a).toFixed(9);
            this.add(cos, sin, -sin, cos, x, y);
            this.add(1, 0, 0, 1, -x, -y);
        };
        /*\
         * Matrix.x
         [ method ]
         **
         * Return x coordinate for given point after transformation described by the matrix. See also @Matrix.y
         > Parameters
         - x (number)
         - y (number)
         = (number) x
        \*/
        matrixproto.x = function (x, y) {
            return x * this.a + y * this.c + this.e;
        };
        /*\
         * Matrix.y
         [ method ]
         **
         * Return y coordinate for given point after transformation described by the matrix. See also @Matrix.x
         > Parameters
         - x (number)
         - y (number)
         = (number) y
        \*/
        matrixproto.y = function (x, y) {
            return x * this.b + y * this.d + this.f;
        };
        matrixproto.get = function (i) {
            return +this[Str.fromCharCode(97 + i)].toFixed(4);
        };
        matrixproto.toString = function () {
            return R.svg ?
                "matrix(" + [this.get(0), this.get(1), this.get(2), this.get(3), this.get(4), this.get(5)].join() + ")" :
                [this.get(0), this.get(2), this.get(1), this.get(3), 0, 0].join();
        };
        matrixproto.toFilter = function () {
            return "progid:DXImageTransform.Microsoft.Matrix(M11=" + this.get(0) +
                ", M12=" + this.get(2) + ", M21=" + this.get(1) + ", M22=" + this.get(3) +
                ", Dx=" + this.get(4) + ", Dy=" + this.get(5) + ", sizingmethod='auto expand')";
        };
        matrixproto.offset = function () {
            return [this.e.toFixed(4), this.f.toFixed(4)];
        };
        function norm(a) {
            return a[0] * a[0] + a[1] * a[1];
        }
        function normalize(a) {
            var mag = math.sqrt(norm(a));
            a[0] && (a[0] /= mag);
            a[1] && (a[1] /= mag);
        }
        /*\
         * Matrix.split
         [ method ]
         **
         * Splits matrix into primitive transformations
         = (object) in format:
         o dx (number) translation by x
         o dy (number) translation by y
         o scalex (number) scale by x
         o scaley (number) scale by y
         o shear (number) shear
         o rotate (number) rotation in deg
         o isSimple (boolean) could it be represented via simple transformations
        \*/
        matrixproto.split = function () {
            var out = {};
            // translation
            out.dx = this.e;
            out.dy = this.f;

// scale and shear
            var row = [[this.a, this.c], [this.b, this.d]];
            out.scalex = math.sqrt(norm(row[0]));
            normalize(row[0]);

out.shear = row[0][0] * row[1][0] + row[0][1] * row[1][1];
            row[1] = [row[1][0] - row[0][0] * out.shear, row[1][1] - row[0][1] * out.shear];

out.scaley = math.sqrt(norm(row[1]));
            normalize(row[1]);
            out.shear /= out.scaley;

// rotation
            var sin = -row[0][1],
                cos = row[1][1];
            if (cos < 0) {
                out.rotate = R.deg(math.acos(cos));
                if (sin < 0) {
                    out.rotate = 360 - out.rotate;
                }
            } else {
                out.rotate = R.deg(math.asin(sin));
            }

out.isSimple = !+out.shear.toFixed(9) && (out.scalex.toFixed(9) == out.scaley.toFixed(9) || !out.rotate);
            out.isSuperSimple = !+out.shear.toFixed(9) && out.scalex.toFixed(9) == out.scaley.toFixed(9) && !out.rotate;
            out.noRotation = !+out.shear.toFixed(9) && !out.rotate;
            return out;
        };
        /*\
         * Matrix.toTransformString
         [ method ]
         **
         * Return transform string that represents given matrix
         = (string) transform string
        \*/
        matrixproto.toTransformString = function (shorter) {
            var s = shorter || this[split]();
            if (s.isSimple) {
                s.scalex = +s.scalex.toFixed(4);
                s.scaley = +s.scaley.toFixed(4);
                s.rotate = +s.rotate.toFixed(4);
                return  (s.dx || s.dy ? "t" + [s.dx, s.dy] : E) +
                        (s.scalex != 1 || s.scaley != 1 ? "s" + [s.scalex, s.scaley, 0, 0] : E) +
                        (s.rotate ? "r" + [s.rotate, 0, 0] : E);
            } else {
                return "m" + [this.get(0), this.get(1), this.get(2), this.get(3), this.get(4), this.get(5)];
            }
        };
    })(Matrix.prototype);

return {
            x: e.clientX + scrollX,
            y: e.clientY + scrollY
        };
    },
    addEvent = (function () {
        if (g.doc.addEventListener) {
            return function (obj, type, fn, element) {
                var f = function (e) {
                    var pos = getEventPosition(e);
                    return fn.call(element, e, pos.x, pos.y);
                };
                obj.addEventListener(type, f, false);

if (supportsTouch && touchMap[type]) {
                    var _f = function (e) {
                        var pos = getEventPosition(e),
                            olde = e;

for (var i = 0, ii = e.targetTouches && e.targetTouches.length; i < ii; i++) {
                            if (e.targetTouches[i].target == obj) {
                                e = e.targetTouches[i];
                                e.originalEvent = olde;
                                e.preventDefault = preventTouch;
                                e.stopPropagation = stopTouch;
                                break;
                            }
                        }

return fn.call(element, e, pos.x, pos.y);
                    };
                    obj.addEventListener(touchMap[type], _f, false);
                }

return function () {
                    obj.removeEventListener(type, f, false);

if (supportsTouch && touchMap[type])
                        obj.removeEventListener(touchMap[type], _f, false);

return true;
                };
            };
        } else if (g.doc.attachEvent) {
            return function (obj, type, fn, element) {
                var f = function (e) {
                    e = e || g.win.event;
                    var scrollY = g.doc.documentElement.scrollTop || g.doc.body.scrollTop,
                        scrollX = g.doc.documentElement.scrollLeft || g.doc.body.scrollLeft,
                        x = e.clientX + scrollX,
                        y = e.clientY + scrollY;
                    e.preventDefault = e.preventDefault || preventDefault;
                    e.stopPropagation = e.stopPropagation || stopPropagation;
                    return fn.call(element, e, x, y);
                };
                obj.attachEvent("on" + type, f);
                var detacher = function () {
                    obj.detachEvent("on" + type, f);
                    return true;
                };
                return detacher;
            };
        }
    })(),
    drag = [],
    dragMove = function (e) {
        var x = e.clientX,
            y = e.clientY,
            scrollY = g.doc.documentElement.scrollTop || g.doc.body.scrollTop,
            scrollX = g.doc.documentElement.scrollLeft || g.doc.body.scrollLeft,
            dragi,
            j = drag.length;
        while (j--) {
            dragi = drag[j];
            if (supportsTouch && e.touches) {
                var i = e.touches.length,
                    touch;
                while (i--) {
                    touch = e.touches[i];
                    if (touch.identifier == dragi.el._drag.id) {
                        x = touch.clientX;
                        y = touch.clientY;
                        (e.originalEvent ? e.originalEvent : e).preventDefault();
                        break;
                    }
                }
            } else {
                e.preventDefault();
            }
            var node = dragi.el.node,
                o,
                next = node.nextSibling,
                parent = node.parentNode,
                display = node.style.display;
            g.win.opera && parent.removeChild(node);
            node.style.display = "none";
            o = dragi.el.paper.getElementByPoint(x, y);
            node.style.display = display;
            g.win.opera && (next ? parent.insertBefore(node, next) : parent.appendChild(node));
            o && eve("raphael.drag.over." + dragi.el.id, dragi.el, o);
            x += scrollX;
            y += scrollY;
            eve("raphael.drag.move." + dragi.el.id, dragi.move_scope || dragi.el, x - dragi.el._drag.x, y - dragi.el._drag.y, x, y, e);
        }
    },
    dragUp = function (e) {
        R.unmousemove(dragMove).unmouseup(dragUp);
        var i = drag.length,
            dragi;
        while (i--) {
            dragi = drag[i];
            dragi.el._drag = {};
            eve("raphael.drag.end." + dragi.el.id, dragi.end_scope || dragi.start_scope || dragi.move_scope || dragi.el, e);
        }
        drag = [];
    },
    /*\
     * Raphael.el
     [ property (object) ]
     **
     * You can add your own method to elements. This is useful when you want to hack default functionality or
     * want to wrap some common transformation or attributes in one method. In difference to canvas methods,
     * you can redefine element method at any time. Expending element methods wouldn’t affect set.
     > Usage
     | Raphael.el.red = function () {
     |     this.attr({fill: "#f00"});
     | };
     | // then use it
     | paper.circle(100, 100, 20).red();
    \*/
    elproto = R.el = {};
    /*\
     * Element.click
     [ method ]
     **
     * Adds event handler for click for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
    \*/
    /*\
     * Element.unclick
     [ method ]
     **
     * Removes event handler for click for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
    \*/

/*\
     * Element.dblclick
     [ method ]
     **
     * Adds event handler for double click for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
    \*/
    /*\
     * Element.undblclick
     [ method ]
     **
     * Removes event handler for double click for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
    \*/

/*\
     * Element.mousedown
     [ method ]
     **
     * Adds event handler for mousedown for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
    \*/
    /*\
     * Element.unmousedown
     [ method ]
     **
     * Removes event handler for mousedown for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
    \*/

/*\
     * Element.mousemove
     [ method ]
     **
     * Adds event handler for mousemove for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
    \*/
    /*\
     * Element.unmousemove
     [ method ]
     **
     * Removes event handler for mousemove for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
    \*/

/*\
     * Element.mouseout
     [ method ]
     **
     * Adds event handler for mouseout for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
    \*/
    /*\
     * Element.unmouseout
     [ method ]
     **
     * Removes event handler for mouseout for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
    \*/

/*\
     * Element.mouseover
     [ method ]
     **
     * Adds event handler for mouseover for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
    \*/
    /*\
     * Element.unmouseover
     [ method ]
     **
     * Removes event handler for mouseover for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
    \*/

/*\
     * Element.mouseup
     [ method ]
     **
     * Adds event handler for mouseup for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
    \*/
    /*\
     * Element.unmouseup
     [ method ]
     **
     * Removes event handler for mouseup for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
    \*/

/*\
     * Element.touchstart
     [ method ]
     **
     * Adds event handler for touchstart for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
    \*/
    /*\
     * Element.untouchstart
     [ method ]
     **
     * Removes event handler for touchstart for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
    \*/

/*\
     * Element.touchmove
     [ method ]
     **
     * Adds event handler for touchmove for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
    \*/
    /*\
     * Element.untouchmove
     [ method ]
     **
     * Removes event handler for touchmove for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
    \*/

/*\
     * Element.touchend
     [ method ]
     **
     * Adds event handler for touchend for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
    \*/
    /*\
     * Element.untouchend
     [ method ]
     **
     * Removes event handler for touchend for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
    \*/

/*\
     * Element.touchcancel
     [ method ]
     **
     * Adds event handler for touchcancel for the element.
     > Parameters
     - handler (function) handler for the event
     = (object) @Element
    \*/
    /*\
     * Element.untouchcancel
     [ method ]
     **
     * Removes event handler for touchcancel for the element.
     > Parameters
     - handler (function) #optional handler for the event
     = (object) @Element
    \*/
    for (var i = events.length; i--;) {
        (function (eventName) {
            R[eventName] = elproto[eventName] = function (fn, scope) {
                if (R.is(fn, "function")) {
                    this.events = this.events || [];
                    this.events.push({name: eventName, f: fn, unbind: addEvent(this.shape || this.node || g.doc, eventName, fn, scope || this)});
                }
                return this;
            };
            R["un" + eventName] = elproto["un" + eventName] = function (fn) {
                var events = this.events || [],
                    l = events.length;
                while (l--){
                    if (events[l].name == eventName && (R.is(fn, "undefined") || events[l].f == fn)) {
                        events[l].unbind();
                        events.splice(l, 1);
                        !events.length && delete this.events;
                    }
                }
                return this;
            };
        })(events[i]);
    }

/*\
     * Element.data
     [ method ]
     **
     * Adds or retrieves given value associated with given key.
     **
     * See also @Element.removeData
     > Parameters
     - key (string) key to store data
     - value (any) #optional value to store
     = (object) @Element
     * or, if value is not specified:
     = (any) value
     * or, if key and value are not specified:
     = (object) Key/value pairs for all the data associated with the element.
     > Usage
     | for (var i = 0, i < 5, i++) {
     |     paper.circle(10 + 15 * i, 10, 10)
     |          .attr({fill: "#000"})
     |          .data("i", i)
     |          .click(function () {
     |             alert(this.data("i"));
     |          });
     | }
    \*/
    elproto.data = function (key, value) {
        var data = eldata[this.id] = eldata[this.id] || {};
        if (arguments.length == 0) {
            return data;
        }
        if (arguments.length == 1) {
            if (R.is(key, "object")) {
                for (var i in key) if (key[has](i)) {
                    this.data(i, key[i]);
                }
                return this;
            }
            eve("raphael.data.get." + this.id, this, data[key], key);
            return data[key];
        }
        data[key] = value;
        eve("raphael.data.set." + this.id, this, value, key);
        return this;
    };
    /*\
     * Element.removeData
     [ method ]
     **
     * Removes value associated with an element by given key.
     * If key is not provided, removes all the data of the element.
     > Parameters
     - key (string) #optional key
     = (object) @Element
    \*/
    elproto.removeData = function (key) {
        if (key == null) {
            delete eldata[this.id];
        } else {
            eldata[this.id] && delete eldata[this.id][key];
        }
        return this;
    };
     /*\
     * Element.getData
     [ method ]
     **
     * Retrieves the element data
     = (object) data
    \*/
    elproto.getData = function () {
        return clone(eldata[this.id] || {});
    };
    /*\
     * Element.hover
     [ method ]
     **
     * Adds event handlers for hover for the element.
     > Parameters
     - f_in (function) handler for hover in
     - f_out (function) handler for hover out
     - icontext (object) #optional context for hover in handler
     - ocontext (object) #optional context for hover out handler
     = (object) @Element
    \*/
    elproto.hover = function (f_in, f_out, scope_in, scope_out) {
        return this.mouseover(f_in, scope_in).mouseout(f_out, scope_out || scope_in);
    };
    /*\
     * Element.unhover
     [ method ]
     **
     * Removes event handlers for hover for the element.
     > Parameters
     - f_in (function) handler for hover in
     - f_out (function) handler for hover out
     = (object) @Element
    \*/
    elproto.unhover = function (f_in, f_out) {
        return this.unmouseover(f_in).unmouseout(f_out);
    };
    var draggable = [];
    /*\
     * Element.drag
     [ method ]
     **
     * Adds event handlers for drag of the element.
     > Parameters
     - onmove (function) handler for moving
     - onstart (function) handler for drag start
     - onend (function) handler for drag end
     - mcontext (object) #optional context for moving handler
     - scontext (object) #optional context for drag start handler
     - econtext (object) #optional context for drag end handler
     * Additionally following `drag` events will be triggered: `drag.start.<id>` on start,
     * `drag.end.<id>` on end and `drag.move.<id>` on every move. When element will be dragged over another element
     * `drag.over.<id>` will be fired as well.
     *
     * Start event and start handler will be called in specified context or in context of the element with following parameters:
     o x (number) x position of the mouse
     o y (number) y position of the mouse
     o event (object) DOM event object
     * Move event and move handler will be called in specified context or in context of the element with following parameters:
     o dx (number) shift by x from the start point
     o dy (number) shift by y from the start point
     o x (number) x position of the mouse
     o y (number) y position of the mouse
     o event (object) DOM event object
     * End event and end handler will be called in specified context or in context of the element with following parameters:
     o event (object) DOM event object
     = (object) @Element
    \*/
    elproto.drag = function (onmove, onstart, onend, move_scope, start_scope, end_scope) {
        function start(e) {
            (e.originalEvent || e).preventDefault();
            var x = e.clientX,
                y = e.clientY,
                scrollY = g.doc.documentElement.scrollTop || g.doc.body.scrollTop,
                scrollX = g.doc.documentElement.scrollLeft || g.doc.body.scrollLeft;
            this._drag.id = e.identifier;
            if (supportsTouch && e.touches) {
                var i = e.touches.length, touch;
                while (i--) {
                    touch = e.touches[i];
                    this._drag.id = touch.identifier;
                    if (touch.identifier == this._drag.id) {
                        x = touch.clientX;
                        y = touch.clientY;
                        break;
                    }
                }
            }
            this._drag.x = x + scrollX;
            this._drag.y = y + scrollY;
            !drag.length && R.mousemove(dragMove).mouseup(dragUp);
            drag.push({el: this, move_scope: move_scope, start_scope: start_scope, end_scope: end_scope});
            onstart && eve.on("raphael.drag.start." + this.id, onstart);
            onmove && eve.on("raphael.drag.move." + this.id, onmove);
            onend && eve.on("raphael.drag.end." + this.id, onend);
            eve("raphael.drag.start." + this.id, start_scope || move_scope || this, this._drag.x, this._drag.y, e);
        }
        this._drag = {};
        draggable.push({el: this, start: start});
        this.mousedown(start);
        return this;
    };
    /*\
     * Element.onDragOver
     [ method ]
     **
     * Shortcut for assigning event handler for `drag.over.<id>` event, where id is id of the element (see @Element.id).
     > Parameters
     - f (function) handler for event, first argument would be the element you are dragging over
    \*/
    elproto.onDragOver = function (f) {
        f ? eve.on("raphael.drag.over." + this.id, f) : eve.unbind("raphael.drag.over." + this.id);
    };
    /*\
     * Element.undrag
     [ method ]
     **
     * Removes all drag event handlers from given element.
    \*/
    elproto.undrag = function () {
        var i = draggable.length;
        while (i--) if (draggable[i].el == this) {
            this.unmousedown(draggable[i].start);
            draggable.splice(i, 1);
            eve.unbind("raphael.drag.*." + this.id);
        }
        !draggable.length && R.unmousemove(dragMove).unmouseup(dragUp);
        drag = [];
    };
    /*\
     * Paper.circle
     [ method ]
     **
     * Draws a circle.
     **
     > Parameters
     **
     - x (number) x coordinate of the centre
     - y (number) y coordinate of the centre
     - r (number) radius
     = (object) Raphaël element object with type “circle”
     **
     > Usage
     | var c = paper.circle(50, 50, 40);
    \*/
    paperproto.circle = function (x, y, r) {
        var out = R._engine.circle(this, x || 0, y || 0, r || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.rect
     [ method ]
     *
     * Draws a rectangle.
     **
     > Parameters
     **
     - x (number) x coordinate of the top left corner
     - y (number) y coordinate of the top left corner
     - width (number) width
     - height (number) height
     - r (number) #optional radius for rounded corners, default is 0
     = (object) Raphaël element object with type “rect”
     **
     > Usage
     | // regular rectangle
     | var c = paper.rect(10, 10, 50, 50);
     | // rectangle with rounded corners
     | var c = paper.rect(40, 40, 50, 50, 10);
    \*/
    paperproto.rect = function (x, y, w, h, r) {
        var out = R._engine.rect(this, x || 0, y || 0, w || 0, h || 0, r || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.ellipse
     [ method ]
     **
     * Draws an ellipse.
     **
     > Parameters
     **
     - x (number) x coordinate of the centre
     - y (number) y coordinate of the centre
     - rx (number) horizontal radius
     - ry (number) vertical radius
     = (object) Raphaël element object with type “ellipse”
     **
     > Usage
     | var c = paper.ellipse(50, 50, 40, 20);
    \*/
    paperproto.ellipse = function (x, y, rx, ry) {
        var out = R._engine.ellipse(this, x || 0, y || 0, rx || 0, ry || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.path
     [ method ]
     **
     * Creates a path element by given path data string.
     > Parameters
     - pathString (string) #optional path string in SVG format.
     * Path string consists of one-letter commands, followed by comma seprarated arguments in numercal form. Example:
     | "M10,20L30,40"
     * Here we can see two commands: “M”, with arguments `(10, 20)` and “L” with arguments `(30, 40)`. Upper case letter mean command is absolute, lower case—relative.
     *
     # <p>Here is short list of commands available, for more details see <a href="http://www.w3.org/TR/SVG/paths.html#PathData" title="Details of a path's data attribute's format are described in the SVG specification.">SVG path string format</a>.</p>
     # <table><thead><tr><th>Command</th><th>Name</th><th>Parameters</th></tr></thead><tbody>
     # <tr><td>M</td><td>moveto</td><td>(x y)+</td></tr>
     # <tr><td>Z</td><td>closepath</td><td>(none)</td></tr>
     # <tr><td>L</td><td>lineto</td><td>(x y)+</td></tr>
     # <tr><td>H</td><td>horizontal lineto</td><td>x+</td></tr>
     # <tr><td>V</td><td>vertical lineto</td><td>y+</td></tr>
     # <tr><td>C</td><td>curveto</td><td>(x1 y1 x2 y2 x y)+</td></tr>
     # <tr><td>S</td><td>smooth curveto</td><td>(x2 y2 x y)+</td></tr>
     # <tr><td>Q</td><td>quadratic Bézier curveto</td><td>(x1 y1 x y)+</td></tr>
     # <tr><td>T</td><td>smooth quadratic Bézier curveto</td><td>(x y)+</td></tr>
     # <tr><td>A</td><td>elliptical arc</td><td>(rx ry x-axis-rotation large-arc-flag sweep-flag x y)+</td></tr>
     # <tr><td>R</td><td><a href="http://en.wikipedia.org/wiki/Catmull–Rom_spline#Catmull.E2.80.93Rom_spline">Catmull-Rom curveto</a>*</td><td>x1 y1 (x y)+</td></tr></tbody></table>
     * * “Catmull-Rom curveto” is a not standard SVG command and added in 2.0 to make life easier.
     * Note: there is a special case when path consist of just three commands: “M10,10R…z”. In this case path will smoothly connects to its beginning.
     > Usage
     | var c = paper.path("M10 10L90 90");
     | // draw a diagonal line:
     | // move to 10,10, line to 90,90
     * For example of path strings, check out these icons: http://raphaeljs.com/icons/
    \*/
    paperproto.path = function (pathString) {
        pathString && !R.is(pathString, string) && !R.is(pathString[0], array) && (pathString += E);
        var out = R._engine.path(R.format[apply](R, arguments), this);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.image
     [ method ]
     **
     * Embeds an image into the surface.
     **
     > Parameters
     **
     - src (string) URI of the source image
     - x (number) x coordinate position
     - y (number) y coordinate position
     - width (number) width of the image
     - height (number) height of the image
     = (object) Raphaël element object with type “image”
     **
     > Usage
     | var c = paper.image("apple.png", 10, 10, 80, 80);
    \*/
    paperproto.image = function (src, x, y, w, h) {
        var out = R._engine.image(this, src || "about:blank", x || 0, y || 0, w || 0, h || 0);
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.text
     [ method ]
     **
     * Draws a text string. If you need line breaks, put “\n” in the string.
     **
     > Parameters
     **
     - x (number) x coordinate position
     - y (number) y coordinate position
     - text (string) The text string to draw
     = (object) Raphaël element object with type “text”
     **
     > Usage
     | var t = paper.text(50, 50, "Raphaël\nkicks\nbutt!");
    \*/
    paperproto.text = function (x, y, text) {
        var out = R._engine.text(this, x || 0, y || 0, Str(text));
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Paper.set
     [ method ]
     **
     * Creates array-like object to keep and operate several elements at once.
     * Warning: it doesn’t create any elements for itself in the page, it just groups existing elements.
     * Sets act as pseudo elements — all methods available to an element can be used on a set.
     = (object) array-like object that represents set of elements
     **
     > Usage
     | var st = paper.set();
     | st.push(
     |     paper.circle(10, 10, 5),
     |     paper.circle(30, 10, 5)
     | );
     | st.attr({fill: "red"}); // changes the fill of both circles
    \*/
    paperproto.set = function (itemsArray) {
        !R.is(itemsArray, "array") && (itemsArray = Array.prototype.splice.call(arguments, 0, arguments.length));
        var out = new Set(itemsArray);
        this.__set__ && this.__set__.push(out);
        out["paper"] = this;
        out["type"] = "set";
        return out;
    };
    /*\
     * Paper.setStart
     [ method ]
     **
     * Creates @Paper.set. All elements that will be created after calling this method and before calling
     * @Paper.setFinish will be added to the set.
     **
     > Usage
     | paper.setStart();
     | paper.circle(10, 10, 5),
     | paper.circle(30, 10, 5)
     | var st = paper.setFinish();
     | st.attr({fill: "red"}); // changes the fill of both circles
    \*/
    paperproto.setStart = function (set) {
        this.__set__ = set || this.set();
    };
    /*\
     * Paper.setFinish
     [ method ]
     **
     * See @Paper.setStart. This method finishes catching and returns resulting set.
     **
     = (object) set
    \*/
    paperproto.setFinish = function (set) {
        var out = this.__set__;
        delete this.__set__;
        return out;
    };
    /*\
     * Paper.getSize
     [ method ]
     **
     * Obtains current paper actual size.
     **
     = (object)
     \*/
    paperproto.getSize = function () {
        var container = this.canvas.parentNode;
        return {
            width: container.offsetWidth,
            height: container.offsetHeight
                };
        };
    /*\
     * Paper.setSize
     [ method ]
     **
     * If you need to change dimensions of the canvas call this method
     **
     > Parameters
     **
     - width (number) new width of the canvas
     - height (number) new height of the canvas
    \*/
    paperproto.setSize = function (width, height) {
        return R._engine.setSize.call(this, width, height);
    };
    /*\
     * Paper.setViewBox
     [ method ]
     **
     * Sets the view box of the paper. Practically it gives you ability to zoom and pan whole paper surface by
     * specifying new boundaries.
     **
     > Parameters
     **
     - x (number) new x position, default is `0`
     - y (number) new y position, default is `0`
     - w (number) new width of the canvas
     - h (number) new height of the canvas
     - fit (boolean) `true` if you want graphics to fit into new boundary box
    \*/
    paperproto.setViewBox = function (x, y, w, h, fit) {
        return R._engine.setViewBox.call(this, x, y, w, h, fit);
    };
    /*\
     * Paper.top
     [ property ]
     **
     * Points to the topmost element on the paper
    \*/
    /*\
     * Paper.bottom
     [ property ]
     **
     * Points to the bottom element on the paper
    \*/
    paperproto.top = paperproto.bottom = null;
    /*\
     * Paper.raphael
     [ property ]
     **
     * Points to the @Raphael object/function
    \*/
    paperproto.raphael = R;
    var getOffset = function (elem) {
        var box = elem.getBoundingClientRect(),
            doc = elem.ownerDocument,
            body = doc.body,
            docElem = doc.documentElement,
            clientTop = docElem.clientTop || body.clientTop || 0, clientLeft = docElem.clientLeft || body.clientLeft || 0,
            top  = box.top  + (g.win.pageYOffset || docElem.scrollTop || body.scrollTop ) - clientTop,
            left = box.left + (g.win.pageXOffset || docElem.scrollLeft || body.scrollLeft) - clientLeft;
        return {
            y: top,
            x: left
        };
    };
    /*\
     * Paper.getElementByPoint
     [ method ]
     **
     * Returns you topmost element under given point.
     **
     = (object) Raphaël element object
     > Parameters
     **
     - x (number) x coordinate from the top left corner of the window
     - y (number) y coordinate from the top left corner of the window
     > Usage
     | paper.getElementByPoint(mouseX, mouseY).attr({stroke: "#f00"});
    \*/
    paperproto.getElementByPoint = function (x, y) {
        var paper = this,
            svg = paper.canvas,
            target = g.doc.elementFromPoint(x, y);
        if (g.win.opera && target.tagName == "svg") {
            var so = getOffset(svg),
                sr = svg.createSVGRect();
            sr.x = x - so.x;
            sr.y = y - so.y;
            sr.width = sr.height = 1;
            var hits = svg.getIntersectionList(sr, null);
            if (hits.length) {
                target = hits[hits.length - 1];
            }
        }
        if (!target) {
            return null;
        }
        while (target.parentNode && target != svg.parentNode && !target.raphael) {
            target = target.parentNode;
        }
        target == paper.canvas.parentNode && (target = svg);
        target = target && target.raphael ? paper.getById(target.raphaelid) : null;
        return target;
    };

/*\
     * Paper.getElementsByBBox
     [ method ]
     **
     * Returns set of elements that have an intersecting bounding box
     **
     > Parameters
     **
     - bbox (object) bbox to check with
     = (object) @Set
     \*/
    paperproto.getElementsByBBox = function (bbox) {
        var set = this.set();
        this.forEach(function (el) {
            if (R.isBBoxIntersect(el.getBBox(), bbox)) {
                set.push(el);
            }
        });
        return set;
    };

/*\
     * Paper.getById
     [ method ]
     **
     * Returns you element by its internal ID.
     **
     > Parameters
     **
     - id (number) id
     = (object) Raphaël element object
    \*/
    paperproto.getById = function (id) {
        var bot = this.bottom;
        while (bot) {
            if (bot.id == id) {
                return bot;
            }
            bot = bot.next;
        }
        return null;
    };
    /*\
     * Paper.forEach
     [ method ]
     **
     * Executes given function for each element on the paper
     *
     * If callback function returns `false` it will stop loop running.
     **
     > Parameters
     **
     - callback (function) function to run
     - thisArg (object) context object for the callback
     = (object) Paper object
     > Usage
     | paper.forEach(function (el) {
     |     el.attr({ stroke: "blue" });
     | });
    \*/
    paperproto.forEach = function (callback, thisArg) {
        var bot = this.bottom;
        while (bot) {
            if (callback.call(thisArg, bot) === false) {
                return this;
            }
            bot = bot.next;
        }
        return this;
    };
    /*\
     * Paper.getElementsByPoint
     [ method ]
     **
     * Returns set of elements that have common point inside
     **
     > Parameters
     **
     - x (number) x coordinate of the point
     - y (number) y coordinate of the point
     = (object) @Set
    \*/
    paperproto.getElementsByPoint = function (x, y) {
        var set = this.set();
        this.forEach(function (el) {
            if (el.isPointInside(x, y)) {
                set.push(el);
            }
        });
        return set;
    };
    function x_y() {
        return this.x + S + this.y;
    }
    function x_y_w_h() {
        return this.x + S + this.y + S + this.width + " \xd7 " + this.height;
    }
    /*\
     * Element.isPointInside
     [ method ]
     **
     * Determine if given point is inside this element’s shape
     **
     > Parameters
     **
     - x (number) x coordinate of the point
     - y (number) y coordinate of the point
     = (boolean) `true` if point inside the shape
    \*/
    elproto.isPointInside = function (x, y) {
        var rp = this.realPath = getPath[this.type](this);
        if (this.attr('transform') && this.attr('transform').length) {
            rp = R.transformPath(rp, this.attr('transform'));
        }
        return R.isPointInsidePath(rp, x, y);
    };
    /*\
     * Element.getBBox
     [ method ]
     **
     * Return bounding box for a given element
     **
     > Parameters
     **
     - isWithoutTransform (boolean) flag, `true` if you want to have bounding box before transformations. Default is `false`.
     = (object) Bounding box object:
     o {
     o     x: (number) top left corner x
     o     y: (number) top left corner y
     o     x2: (number) bottom right corner x
     o     y2: (number) bottom right corner y
     o     width: (number) width
     o     height: (number) height
     o }
    \*/
    elproto.getBBox = function (isWithoutTransform) {
        if (this.removed) {
            return {};
        }
        var _ = this._;
        if (isWithoutTransform) {
            if (_.dirty || !_.bboxwt) {
                this.realPath = getPath[this.type](this);
                _.bboxwt = pathDimensions(this.realPath);
                _.bboxwt.toString = x_y_w_h;
                _.dirty = 0;
            }
            return _.bboxwt;
        }
        if (_.dirty || _.dirtyT || !_.bbox) {
            if (_.dirty || !this.realPath) {
                _.bboxwt = 0;
                this.realPath = getPath[this.type](this);
            }
            _.bbox = pathDimensions(mapPath(this.realPath, this.matrix));
            _.bbox.toString = x_y_w_h;
            _.dirty = _.dirtyT = 0;
        }
        return _.bbox;
    };
    /*\
     * Element.clone
     [ method ]
     **
     = (object) clone of a given element
     **
    \*/
    elproto.clone = function () {
        if (this.removed) {
            return null;
        }
        var out = this.paper[this.type]().attr(this.attr());
        this.__set__ && this.__set__.push(out);
        return out;
    };
    /*\
     * Element.glow
     [ method ]
     **
     * Return set of elements that create glow-like effect around given element. See @Paper.set.
     *
     * Note: Glow is not connected to the element. If you change element attributes it won’t adjust itself.
     **
     > Parameters
     **
     - glow (object) #optional parameters object with all properties optional:
     o {
     o     width (number) size of the glow, default is `10`
     o     fill (boolean) will it be filled, default is `false`
     o     opacity (number) opacity, default is `0.5`
     o     offsetx (number) horizontal offset, default is `0`
     o     offsety (number) vertical offset, default is `0`
     o     color (string) glow colour, default is `black`
     o }
     = (object) @Paper.set of elements that represents glow
    \*/
    elproto.glow = function (glow) {
        if (this.type == "text") {
            return null;
        }
        glow = glow || {};
        var s = {
            width: (glow.width || 10) + (+this.attr("stroke-width") || 1),
            fill: glow.fill || false,
            opacity: glow.opacity == null ? .5 : glow.opacity,
            offsetx: glow.offsetx || 0,
            offsety: glow.offsety || 0,
            color: glow.color || "#000"
        },
            c = s.width / 2,
            r = this.paper,
            out = r.set(),
            path = this.realPath || getPath[this.type](this);
        path = this.matrix ? mapPath(path, this.matrix) : path;
        for (var i = 1; i < c + 1; i++) {
            out.push(r.path(path).attr({
                stroke: s.color,
                fill: s.fill ? s.color : "none",
                "stroke-linejoin": "round",
                "stroke-linecap": "round",
                "stroke-width": +(s.width / c * i).toFixed(3),
                opacity: +(s.opacity / c).toFixed(3)
            }));
        }
        return out.insertBefore(this).translate(s.offsetx, s.offsety);
    };
    var curveslengths = {},
    getPointAtSegmentLength = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, length) {
        if (length == null) {
            return bezlen(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y);
        } else {
            return R.findDotsAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, getTatLen(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, length));
        }
    },
    getLengthFactory = function (istotal, subpath) {
        return function (path, length, onlystart) {
            path = path2curve(path);
            var x, y, p, l, sp = "", subpaths = {}, point,
                len = 0;
            for (var i = 0, ii = path.length; i < ii; i++) {
                p = path[i];
                if (p[0] == "M") {
                    x = +p[1];
                    y = +p[2];
                } else {
                    l = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6]);
                    if (len + l > length) {
                        if (subpath && !subpaths.start) {
                            point = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6], length - len);
                            sp += ["C" + point.start.x, point.start.y, point.m.x, point.m.y, point.x, point.y];
                            if (onlystart) {return sp;}
                            subpaths.start = sp;
                            sp = ["M" + point.x, point.y + "C" + point.n.x, point.n.y, point.end.x, point.end.y, p[5], p[6]].join();
                            len += l;
                            x = +p[5];
                            y = +p[6];
                            continue;
                        }
                        if (!istotal && !subpath) {
                            point = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6], length - len);
                            return {x: point.x, y: point.y, alpha: point.alpha};
                        }
                    }
                    len += l;
                    x = +p[5];
                    y = +p[6];
                }
                sp += p.shift() + p;
            }
            subpaths.end = sp;
            point = istotal ? len : subpath ? subpaths : R.findDotsAtSegment(x, y, p[0], p[1], p[2], p[3], p[4], p[5], 1);
            point.alpha && (point = {x: point.x, y: point.y, alpha: point.alpha});
            return point;
        };
    };
    var getTotalLength = getLengthFactory(1),
        getPointAtLength = getLengthFactory(),
        getSubpathsAtLength = getLengthFactory(0, 1);
    /*\
     * Raphael.getTotalLength
     [ method ]
     **
     * Returns length of the given path in pixels.
     **
     > Parameters
     **
     - path (string) SVG path string.
     **
     = (number) length.
    \*/
    R.getTotalLength = getTotalLength;
    /*\
     * Raphael.getPointAtLength
     [ method ]
     **
     * Return coordinates of the point located at the given length on the given path.
     **
     > Parameters
     **
     - path (string) SVG path string
     - length (number)
     **
     = (object) representation of the point:
     o {
     o     x: (number) x coordinate
     o     y: (number) y coordinate
     o     alpha: (number) angle of derivative
     o }
    \*/
    R.getPointAtLength = getPointAtLength;
    /*\
     * Raphael.getSubpath
     [ method ]
     **
     * Return subpath of a given path from given length to given length.
     **
     > Parameters
     **
     - path (string) SVG path string
     - from (number) position of the start of the segment
     - to (number) position of the end of the segment
     **
     = (string) pathstring for the segment
    \*/
    R.getSubpath = function (path, from, to) {
        if (this.getTotalLength(path) - to < 1e-6) {
            return getSubpathsAtLength(path, from).end;
        }
        var a = getSubpathsAtLength(path, to, 1);
        return from ? getSubpathsAtLength(a, from).end : a;
    };
    /*\
     * Element.getTotalLength
     [ method ]
     **
     * Returns length of the path in pixels. Only works for element of “path” type.
     = (number) length.
    \*/
    elproto.getTotalLength = function () {
        var path = this.getPath();
        if (!path) {
            return;
        }

if (this.node.getTotalLength) {
            return this.node.getTotalLength();
        }

return getTotalLength(path);
    };
    /*\
     * Element.getPointAtLength
     [ method ]
     **
     * Return coordinates of the point located at the given length on the given path. Only works for element of “path” type.
     **
     > Parameters
     **
     - length (number)
     **
     = (object) representation of the point:
     o {
     o     x: (number) x coordinate
     o     y: (number) y coordinate
     o     alpha: (number) angle of derivative
     o }
    \*/
    elproto.getPointAtLength = function (length) {
        var path = this.getPath();
        if (!path) {
            return;
        }

return getPointAtLength(path, length);
    };
    /*\
     * Element.getPath
     [ method ]
     **
     * Returns path of the element. Only works for elements of “path” type and simple elements like circle.
     = (object) path
     **
    \*/
    elproto.getPath = function () {
        var path,
            getPath = R._getPath[this.type];

if (this.type == "text" || this.type == "set") {
            return;
        }

if (getPath) {
            path = getPath(this);
        }

return path;
    };
    /*\
     * Element.getSubpath
     [ method ]
     **
     * Return subpath of a given element from given length to given length. Only works for element of “path” type.
     **
     > Parameters
     **
     - from (number) position of the start of the segment
     - to (number) position of the end of the segment
     **
     = (string) pathstring for the segment
    \*/
    elproto.getSubpath = function (from, to) {
        var path = this.getPath();
        if (!path) {
            return;
        }

return R.getSubpath(path, from, to);
    };
    /*\
     * Raphael.easing_formulas
     [ property ]
     **
     * Object that contains easing formulas for animation. You could extend it with your own. By default it has following list of easing:
     # <ul>
     #     <li>“linear”</li>
     #     <li>“&lt;” or “easeIn” or “ease-in”</li>
     #     <li>“>” or “easeOut” or “ease-out”</li>
     #     <li>“&lt;>” or “easeInOut” or “ease-in-out”</li>
     #     <li>“backIn” or “back-in”</li>
     #     <li>“backOut” or “back-out”</li>
     #     <li>“elastic”</li>
     #     <li>“bounce”</li>
     # </ul>
     # <p>See also <a href="http://raphaeljs.com/easing.html">Easing demo</a>.</p>
    \*/
    var ef = R.easing_formulas = {
        linear: function (n) {
            return n;
        },
        "<": function (n) {
            return pow(n, 1.7);
        },
        ">": function (n) {
            return pow(n, .48);
        },
        "<>": function (n) {
            var q = .48 - n / 1.04,
                Q = math.sqrt(.1734 + q * q),
                x = Q - q,
                X = pow(abs(x), 1 / 3) * (x < 0 ? -1 : 1),
                y = -Q - q,
                Y = pow(abs(y), 1 / 3) * (y < 0 ? -1 : 1),
                t = X + Y + .5;
            return (1 - t) * 3 * t * t + t * t * t;
        },
        backIn: function (n) {
            var s = 1.70158;
            return n * n * ((s + 1) * n - s);
        },
        backOut: function (n) {
            n = n - 1;
            var s = 1.70158;
            return n * n * ((s + 1) * n + s) + 1;
        },
        elastic: function (n) {
            if (n == !!n) {
                return n;
            }
            return pow(2, -10 * n) * math.sin((n - .075) * (2 * PI) / .3) + 1;
        },
        bounce: function (n) {
            var s = 7.5625,
                p = 2.75,
                l;
            if (n < (1 / p)) {
                l = s * n * n;
            } else {
                if (n < (2 / p)) {
                    n -= (1.5 / p);
                    l = s * n * n + .75;
                } else {
                    if (n < (2.5 / p)) {
                        n -= (2.25 / p);
                        l = s * n * n + .9375;
                    } else {
                        n -= (2.625 / p);
                        l = s * n * n + .984375;
                    }
                }
            }
            return l;
        }
    };
    ef.easeIn = ef["ease-in"] = ef["<"];
    ef.easeOut = ef["ease-out"] = ef[">"];
    ef.easeInOut = ef["ease-in-out"] = ef["<>"];
    ef["back-in"] = ef.backIn;
    ef["back-out"] = ef.backOut;

// Set
    var Set = function (items) {
        this.items = [];
        this.length = 0;
        this.type = "set";
        if (items) {
            for (var i = 0, ii = items.length; i < ii; i++) {
                if (items[i] && (items[i].constructor == elproto.constructor || items[i].constructor == Set)) {
                    this[this.items.length] = this.items[this.items.length] = items[i];
                    this.length++;
                }
            }
        }
    },
    setproto = Set.prototype;
    /*\
     * Set.push
     [ method ]
     **
     * Adds each argument to the current set.
     = (object) original element
    \*/
    setproto.push = function () {
        var item,
            len;
        for (var i = 0, ii = arguments.length; i < ii; i++) {
            item = arguments[i];
            if (item && (item.constructor == elproto.constructor || item.constructor == Set)) {
                len = this.items.length;
                this[len] = this.items[len] = item;
                this.length++;
            }
        }
        return this;
    };
    /*\
     * Set.pop
     [ method ]
     **
     * Removes last element and returns it.
     = (object) element
    \*/
    setproto.pop = function () {
        this.length && delete this[this.length--];
        return this.items.pop();
    };
    /*\
     * Set.forEach
     [ method ]
     **
     * Executes given function for each element in the set.
     *
     * If function returns `false` it will stop loop running.
     **
     > Parameters
     **
     - callback (function) function to run
     - thisArg (object) context object for the callback
     = (object) Set object
    \*/
    setproto.forEach = function (callback, thisArg) {
        for (var i = 0, ii = this.items.length; i < ii; i++) {
            if (callback.call(thisArg, this.items[i], i) === false) {
                return this;
            }
        }
        return this;
    };
    for (var method in elproto) if (elproto[has](method)) {
        setproto[method] = (function (methodname) {
            return function () {
                var arg = arguments;
                return this.forEach(function (el) {
                    el[methodname][apply](el, arg);
                });
            };
        })(method);
    }
    setproto.attr = function (name, value) {
        if (name && R.is(name, array) && R.is(name[0], "object")) {
            for (var j = 0, jj = name.length; j < jj; j++) {
                this.items[j].attr(name[j]);
            }
        } else {
            for (var i = 0, ii = this.items.length; i < ii; i++) {
                this.items[i].attr(name, value);
            }
        }
        return this;
    };
    /*\
     * Set.clear
     [ method ]
     **
     * Removes all elements from the set
    \*/
    setproto.clear = function () {
        while (this.length) {
            this.pop();
        }
    };
    /*\
     * Set.splice
     [ method ]
     **
     * Removes given element from the set
     **
     > Parameters
     **
     - index (number) position of the deletion
     - count (number) number of element to remove
     - insertion… (object) #optional elements to insert
     = (object) set elements that were deleted
    \*/
    setproto.splice = function (index, count, insertion) {
        index = index < 0 ? mmax(this.length + index, 0) : index;
        count = mmax(0, mmin(this.length - index, count));
        var tail = [],
            todel = [],
            args = [],
            i;
        for (i = 2; i < arguments.length; i++) {
            args.push(arguments[i]);
        }
        for (i = 0; i < count; i++) {
            todel.push(this[index + i]);
        }
        for (; i < this.length - index; i++) {
            tail.push(this[index + i]);
        }
        var arglen = args.length;
        for (i = 0; i < arglen + tail.length; i++) {
            this.items[index + i] = this[index + i] = i < arglen ? args[i] : tail[i - arglen];
        }
        i = this.items.length = this.length -= count - arglen;
        while (this[i]) {
            delete this[i++];
        }
        return new Set(todel);
    };
    /*\
     * Set.exclude
     [ method ]
     **
     * Removes given element from the set
     **
     > Parameters
     **
     - element (object) element to remove
     = (boolean) `true` if object was found & removed from the set
    \*/
    setproto.exclude = function (el) {
        for (var i = 0, ii = this.length; i < ii; i++) if (this[i] == el) {
            this.splice(i, 1);
            return true;
        }
    };
    setproto.animate = function (params, ms, easing, callback) {
        (R.is(easing, "function") || !easing) && (callback = easing || null);
        var len = this.items.length,
            i = len,
            item,
            set = this,
            collector;
        if (!len) {
            return this;
        }
        callback && (collector = function () {
            !--len && callback.call(set);
        });
        easing = R.is(easing, string) ? easing : collector;
        var anim = R.animation(params, ms, easing, collector);
        item = this.items[--i].animate(anim);
        while (i--) {
            this.items[i] && !this.items[i].removed && this.items[i].animateWith(item, anim, anim);
            (this.items[i] && !this.items[i].removed) || len--;
        }
        return this;
    };
    setproto.insertAfter = function (el) {
        var i = this.items.length;
        while (i--) {
            this.items[i].insertAfter(el);
        }
        return this;
    };
    setproto.getBBox = function () {
        var x = [],
            y = [],
            x2 = [],
            y2 = [];
        for (var i = this.items.length; i--;) if (!this.items[i].removed) {
            var box = this.items[i].getBBox();
            x.push(box.x);
            y.push(box.y);
            x2.push(box.x + box.width);
            y2.push(box.y + box.height);
        }
        x = mmin[apply](0, x);
        y = mmin[apply](0, y);
        x2 = mmax[apply](0, x2);
        y2 = mmax[apply](0, y2);
        return {
            x: x,
            y: y,
            x2: x2,
            y2: y2,
            width: x2 - x,
            height: y2 - y
        };
    };
    setproto.clone = function (s) {
        s = this.paper.set();
        for (var i = 0, ii = this.items.length; i < ii; i++) {
            s.push(this.items[i].clone());
        }
        return s;
    };
    setproto.toString = function () {
        return "Rapha\xebl\u2018s set";
    };

setproto.glow = function(glowConfig) {
        var ret = this.paper.set();
        this.forEach(function(shape, index){
            var g = shape.glow(glowConfig);
            if(g != null){
                g.forEach(function(shape2, index2){
                    ret.push(shape2);
                });
            }
        });
        return ret;
    };

/*\
     * Set.isPointInside
     [ method ]
     **
     * Determine if given point is inside this set’s elements
     **
     > Parameters
     **
     - x (number) x coordinate of the point
     - y (number) y coordinate of the point
     = (boolean) `true` if point is inside any of the set's elements
     \*/
    setproto.isPointInside = function (x, y) {
        var isPointInside = false;
        this.forEach(function (el) {
            if (el.isPointInside(x, y)) {
                isPointInside = true;
                return false; // stop loop
            }
        });
        return isPointInside;
    };

/*\
     * Raphael.registerFont
     [ method ]
     **
     * Adds given font to the registered set of fonts for Raphaël. Should be used as an internal call from within Cufón’s font file.
     * Returns original parameter, so it could be used with chaining.
     # <a href="http://wiki.github.com/sorccu/cufon/about">More about Cufón and how to convert your font form TTF, OTF, etc to JavaScript file.</a>
     **
     > Parameters
     **
     - font (object) the font to register
     = (object) the font you passed in
     > Usage
     | Cufon.registerFont(Raphael.registerFont({…}));
    \*/
    R.registerFont = function (font) {
        if (!font.face) {
            return font;
        }
        this.fonts = this.fonts || {};
        var fontcopy = {
                w: font.w,
                face: {},
                glyphs: {}
            },
            family = font.face["font-family"];
        for (var prop in font.face) if (font.face[has](prop)) {
            fontcopy.face[prop] = font.face[prop];
        }
        if (this.fonts[family]) {
            this.fonts[family].push(fontcopy);
        } else {
            this.fonts[family] = [fontcopy];
        }
        if (!font.svg) {
            fontcopy.face["units-per-em"] = toInt(font.face["units-per-em"], 10);
            for (var glyph in font.glyphs) if (font.glyphs[has](glyph)) {
                var path = font.glyphs[glyph];
                fontcopy.glyphs[glyph] = {
                    w: path.w,
                    k: {},
                    d: path.d && "M" + path.d.replace(/[mlcxtrv]/g, function (command) {
                            return {l: "L", c: "C", x: "z", t: "m", r: "l", v: "c"}[command] || "M";
                        }) + "z"
                };
                if (path.k) {
                    for (var k in path.k) if (path[has](k)) {
                        fontcopy.glyphs[glyph].k[k] = path.k[k];
                    }
                }
            }
        }
        return font;
    };
    /*\
     * Paper.getFont
     [ method ]
     **
     * Finds font object in the registered fonts by given parameters. You could specify only one word from the font name, like “Myriad” for “Myriad Pro”.
     **
     > Parameters
     **
     - family (string) font family name or any word from it
     - weight (string) #optional font weight
     - style (string) #optional font style
     - stretch (string) #optional font stretch
     = (object) the font object
     > Usage
     | paper.print(100, 100, "Test string", paper.getFont("Times", 800), 30);
    \*/
    paperproto.getFont = function (family, weight, style, stretch) {
        stretch = stretch || "normal";
        style = style || "normal";
        weight = +weight || {normal: 400, bold: 700, lighter: 300, bolder: 800}[weight] || 400;
        if (!R.fonts) {
            return;
        }
        var font = R.fonts[family];
        if (!font) {
            var name = new RegExp("(^|\\s)" + family.replace(/[^\w\d\s+!~.:_-]/g, E) + "(\\s|$)", "i");
            for (var fontName in R.fonts) if (R.fonts[has](fontName)) {
                if (name.test(fontName)) {
                    font = R.fonts[fontName];
                    break;
                }
            }
        }
        var thefont;
        if (font) {
            for (var i = 0, ii = font.length; i < ii; i++) {
                thefont = font[i];
                if (thefont.face["font-weight"] == weight && (thefont.face["font-style"] == style || !thefont.face["font-style"]) && thefont.face["font-stretch"] == stretch) {
                    break;
                }
            }
        }
        return thefont;
    };
    /*\
     * Paper.print
     [ method ]
     **
     * Creates path that represent given text written using given font at given position with given size.
     * Result of the method is path element that contains whole text as a separate path.
     **
     > Parameters
     **
     - x (number) x position of the text
     - y (number) y position of the text
     - string (string) text to print
     - font (object) font object, see @Paper.getFont
     - size (number) #optional size of the font, default is `16`
     - origin (string) #optional could be `"baseline"` or `"middle"`, default is `"middle"`
     - letter_spacing (number) #optional number in range `-1..1`, default is `0`
     - line_spacing (number) #optional number in range `1..3`, default is `1`
     = (object) resulting path element, which consist of all letters
     > Usage
     | var txt = r.print(10, 50, "print", r.getFont("Museo"), 30).attr({fill: "#fff"});
    \*/
    paperproto.print = function (x, y, string, font, size, origin, letter_spacing, line_spacing) {
        origin = origin || "middle"; // baseline|middle
        letter_spacing = mmax(mmin(letter_spacing || 0, 1), -1);
        line_spacing = mmax(mmin(line_spacing || 1, 3), 1);
        var letters = Str(string)[split](E),
            shift = 0,
            notfirst = 0,
            path = E,
            scale;
        R.is(font, "string") && (font = this.getFont(font));
        if (font) {
            scale = (size || 16) / font.face["units-per-em"];
            var bb = font.face.bbox[split](separator),
                top = +bb[0],
                lineHeight = bb[3] - bb[1],
                shifty = 0,
                height = +bb[1] + (origin == "baseline" ? lineHeight + (+font.face.descent) : lineHeight / 2);
            for (var i = 0, ii = letters.length; i < ii; i++) {
                if (letters[i] == "\n") {
                    shift = 0;
                    curr = 0;
                    notfirst = 0;
                    shifty += lineHeight * line_spacing;
                } else {
                    var prev = notfirst && font.glyphs[letters[i - 1]] || {},
                        curr = font.glyphs[letters[i]];
                    shift += notfirst ? (prev.w || font.w) + (prev.k && prev.k[letters[i]] || 0) + (font.w * letter_spacing) : 0;
                    notfirst = 1;
                }
                if (curr && curr.d) {
                    path += R.transformPath(curr.d, ["t", shift * scale, shifty * scale, "s", scale, scale, top, height, "t", (x - top) / scale, (y - height) / scale]);
                }
            }
        }
        return this.path(path).attr({
            fill: "#000",
            stroke: "none"
        });
    };

/*\
     * Paper.add
     [ method ]
     **
     * Imports elements in JSON array in format `{type: type, <attributes>}`
     **
     > Parameters
     **
     - json (array)
     = (object) resulting set of imported elements
     > Usage
     | paper.add([
     |     {
     |         type: "circle",
     |         cx: 10,
     |         cy: 10,
     |         r: 5
     |     },
     |     {
     |         type: "rect",
     |         x: 10,
     |         y: 10,
     |         width: 10,
     |         height: 10,
     |         fill: "#fc0"
     |     }
     | ]);
    \*/
    paperproto.add = function (json) {
        if (R.is(json, "array")) {
            var res = this.set(),
                i = 0,
                ii = json.length,
                j;
            for (; i < ii; i++) {
                j = json[i] || {};
                elements[has](j.type) && res.push(this[j.type]().attr(j));
            }
        }
        return res;
    };

/*\
     * Raphael.format
     [ method ]
     **
     * Simple format function. Replaces construction of type “`{<number>}`” to the corresponding argument.
     **
     > Parameters
     **
     - token (string) string to format
     - … (string) rest of arguments will be treated as parameters for replacement
     = (string) formated string
     > Usage
     | var x = 10,
     |     y = 20,
     |     width = 40,
     |     height = 50;
     | // this will draw a rectangular shape equivalent to "M10,20h40v50h-40z"
     | paper.path(Raphael.format("M{0},{1}h{2}v{3}h{4}z", x, y, width, height, -width));
    \*/
    R.format = function (token, params) {
        var args = R.is(params, array) ? [0][concat](params) : arguments;
        token && R.is(token, string) && args.length - 1 && (token = token.replace(formatrg, function (str, i) {
            return args[++i] == null ? E : args[i];
        }));
        return token || E;
    };
    /*\
     * Raphael.fullfill
     [ method ]
     **
     * A little bit more advanced format function than @Raphael.format. Replaces construction of type “`{<name>}`” to the corresponding argument.
     **
     > Parameters
     **
     - token (string) string to format
     - json (object) object which properties will be used as a replacement
     = (string) formated string
     > Usage
     | // this will draw a rectangular shape equivalent to "M10,20h40v50h-40z"
     | paper.path(Raphael.fullfill("M{x},{y}h{dim.width}v{dim.height}h{dim['negative width']}z", {
     |     x: 10,
     |     y: 20,
     |     dim: {
     |         width: 40,
     |         height: 50,
     |         "negative width": -40
     |     }
     | }));
    \*/
    R.fullfill = (function () {
        var tokenRegex = /\{([^\}]+)\}/g,
            objNotationRegex = /(?:(?:^|\.)(.+?)(?=\[|\.|$|$)|\[('|")(.+?)\2\])(\($)?/g, // matches .xxxxx or ["xxxxx"] to run over object properties
            replacer = function (all, key, obj) {
                var res = obj;
                key.replace(objNotationRegex, function (all, name, quote, quotedName, isFunc) {
                    name = name || quotedName;
                    if (res) {
                        if (name in res) {
                            res = res[name];
                        }
                        typeof res == "function" && isFunc && (res = res());
                    }
                });
                res = (res == null || res == obj ? all : res) + "";
                return res;
            };
        return function (str, obj) {
            return String(str).replace(tokenRegex, function (all, key) {
                return replacer(all, key, obj);
            });
        };
    })();
    /*\
     * Raphael.ninja
     [ method ]
     **
     * If you want to leave no trace of Raphaël (Well, Raphaël creates only one global variable `Raphael`, but anyway.) You can use `ninja` method.
     * Beware, that in this case plugins could stop working, because they are depending on global variable existence.
     **
     = (object) Raphael object
     > Usage
     | (function (local_raphael) {
     |     var paper = local_raphael(10, 10, 320, 200);
     |     …
     | })(Raphael.ninja());
    \*/
    R.ninja = function () {
        if (oldRaphael.was) {
            g.win.Raphael = oldRaphael.is;
        } else {
            // IE8 raises an error when deleting window property
            window.Raphael = undefined;
            try {
                delete window.Raphael;
            } catch(e) {}
        }
        return R;
    };
    /*\
     * Raphael.st
     [ property (object) ]
     **
     * You can add your own method to elements and sets. It is wise to add a set method for each element method
     * you added, so you will be able to call the same method on sets too.
     **
     * See also @Raphael.el.
     > Usage
     | Raphael.el.red = function () {
     |     this.attr({fill: "#f00"});
     | };
     | Raphael.st.red = function () {
     |     this.forEach(function (el) {
     |         el.red();
     |     });
     | };
     | // then use it
     | paper.set(paper.circle(100, 100, 20), paper.circle(110, 100, 20)).red();
    \*/
    R.st = setproto;

eve.on("raphael.DOMload", function () {
        loaded = true;
    });

// Firefox <3.6 fix: http://webreflection.blogspot.com/2009/11/195-chars-to-help-lazy-loading.html
    (function (doc, loaded, f) {
        if (doc.readyState == null && doc.addEventListener){
            doc.addEventListener(loaded, f = function () {
                doc.removeEventListener(loaded, f, false);
                doc.readyState = "complete";
            }, false);
            doc.readyState = "loading";
        }
        function isLoaded() {
            (/in/).test(doc.readyState) ? setTimeout(isLoaded, 9) : R.eve("raphael.DOMload");
        }
        isLoaded();
    })(document, "DOMContentLoaded");

return R;
});

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