/files/highstocks/1.3.7/modules/canvas-tools.src.js

/**
 * @license A class to parse color values
 * @author Stoyan Stefanov <sstoo@gmail.com>
 * @link   http://www.phpied.com/rgb-color-parser-in-javascript/
 * Use it if you like it
 *
 */
function RGBColor(color_string)
{
    this.ok = false;

    // strip any leading #
    if (color_string.charAt(0) == '#') { // remove # if any
        color_string = color_string.substr(1,6);
    }

    color_string = color_string.replace(/ /g,'');
    color_string = color_string.toLowerCase();

    // before getting into regexps, try simple matches
    // and overwrite the input
    var simple_colors = {
        aliceblue: 'f0f8ff',
        antiquewhite: 'faebd7',
        aqua: '00ffff',
        aquamarine: '7fffd4',
        azure: 'f0ffff',
        beige: 'f5f5dc',
        bisque: 'ffe4c4',
        black: '000000',
        blanchedalmond: 'ffebcd',
        blue: '0000ff',
        blueviolet: '8a2be2',
        brown: 'a52a2a',
        burlywood: 'deb887',
        cadetblue: '5f9ea0',
        chartreuse: '7fff00',
        chocolate: 'd2691e',
        coral: 'ff7f50',
        cornflowerblue: '6495ed',
        cornsilk: 'fff8dc',
        crimson: 'dc143c',
        cyan: '00ffff',
        darkblue: '00008b',
        darkcyan: '008b8b',
        darkgoldenrod: 'b8860b',
        darkgray: 'a9a9a9',
        darkgreen: '006400',
        darkkhaki: 'bdb76b',
        darkmagenta: '8b008b',
        darkolivegreen: '556b2f',
        darkorange: 'ff8c00',
        darkorchid: '9932cc',
        darkred: '8b0000',
        darksalmon: 'e9967a',
        darkseagreen: '8fbc8f',
        darkslateblue: '483d8b',
        darkslategray: '2f4f4f',
        darkturquoise: '00ced1',
        darkviolet: '9400d3',
        deeppink: 'ff1493',
        deepskyblue: '00bfff',
        dimgray: '696969',
        dodgerblue: '1e90ff',
        feldspar: 'd19275',
        firebrick: 'b22222',
        floralwhite: 'fffaf0',
        forestgreen: '228b22',
        fuchsia: 'ff00ff',
        gainsboro: 'dcdcdc',
        ghostwhite: 'f8f8ff',
        gold: 'ffd700',
        goldenrod: 'daa520',
        gray: '808080',
        green: '008000',
        greenyellow: 'adff2f',
        honeydew: 'f0fff0',
        hotpink: 'ff69b4',
        indianred : 'cd5c5c',
        indigo : '4b0082',
        ivory: 'fffff0',
        khaki: 'f0e68c',
        lavender: 'e6e6fa',
        lavenderblush: 'fff0f5',
        lawngreen: '7cfc00',
        lemonchiffon: 'fffacd',
        lightblue: 'add8e6',
        lightcoral: 'f08080',
        lightcyan: 'e0ffff',
        lightgoldenrodyellow: 'fafad2',
        lightgrey: 'd3d3d3',
        lightgreen: '90ee90',
        lightpink: 'ffb6c1',
        lightsalmon: 'ffa07a',
        lightseagreen: '20b2aa',
        lightskyblue: '87cefa',
        lightslateblue: '8470ff',
        lightslategray: '778899',
        lightsteelblue: 'b0c4de',
        lightyellow: 'ffffe0',
        lime: '00ff00',
        limegreen: '32cd32',
        linen: 'faf0e6',
        magenta: 'ff00ff',
        maroon: '800000',
        mediumaquamarine: '66cdaa',
        mediumblue: '0000cd',
        mediumorchid: 'ba55d3',
        mediumpurple: '9370d8',
        mediumseagreen: '3cb371',
        mediumslateblue: '7b68ee',
        mediumspringgreen: '00fa9a',
        mediumturquoise: '48d1cc',
        mediumvioletred: 'c71585',
        midnightblue: '191970',
        mintcream: 'f5fffa',
        mistyrose: 'ffe4e1',
        moccasin: 'ffe4b5',
        navajowhite: 'ffdead',
        navy: '000080',
        oldlace: 'fdf5e6',
        olive: '808000',
        olivedrab: '6b8e23',
        orange: 'ffa500',
        orangered: 'ff4500',
        orchid: 'da70d6',
        palegoldenrod: 'eee8aa',
        palegreen: '98fb98',
        paleturquoise: 'afeeee',
        palevioletred: 'd87093',
        papayawhip: 'ffefd5',
        peachpuff: 'ffdab9',
        peru: 'cd853f',
        pink: 'ffc0cb',
        plum: 'dda0dd',
        powderblue: 'b0e0e6',
        purple: '800080',
        red: 'ff0000',
        rosybrown: 'bc8f8f',
        royalblue: '4169e1',
        saddlebrown: '8b4513',
        salmon: 'fa8072',
        sandybrown: 'f4a460',
        seagreen: '2e8b57',
        seashell: 'fff5ee',
        sienna: 'a0522d',
        silver: 'c0c0c0',
        skyblue: '87ceeb',
        slateblue: '6a5acd',
        slategray: '708090',
        snow: 'fffafa',
        springgreen: '00ff7f',
        steelblue: '4682b4',
        tan: 'd2b48c',
        teal: '008080',
        thistle: 'd8bfd8',
        tomato: 'ff6347',
        turquoise: '40e0d0',
        violet: 'ee82ee',
        violetred: 'd02090',
        wheat: 'f5deb3',
        white: 'ffffff',
        whitesmoke: 'f5f5f5',
        yellow: 'ffff00',
        yellowgreen: '9acd32'
    };
    for (var key in simple_colors) {
        if (color_string == key) {
            color_string = simple_colors[key];
        }
    }
    // emd of simple type-in colors

    // array of color definition objects
    var color_defs = [
        {
            re: /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/,
            example: ['rgb(123, 234, 45)', 'rgb(255,234,245)'],
            process: function (bits){
                return [
                    parseInt(bits[1]),
                    parseInt(bits[2]),
                    parseInt(bits[3])
                ];
            }
        },
        {
            re: /^(\w{2})(\w{2})(\w{2})$/,
            example: ['#00ff00', '336699'],
            process: function (bits){
                return [
                    parseInt(bits[1], 16),
                    parseInt(bits[2], 16),
                    parseInt(bits[3], 16)
                ];
            }
        },
        {
            re: /^(\w{1})(\w{1})(\w{1})$/,
            example: ['#fb0', 'f0f'],
            process: function (bits){
                return [
                    parseInt(bits[1] + bits[1], 16),
                    parseInt(bits[2] + bits[2], 16),
                    parseInt(bits[3] + bits[3], 16)
                ];
            }
        }
    ];

    // search through the definitions to find a match
    for (var i = 0; i < color_defs.length; i++) {
        var re = color_defs[i].re;
        var processor = color_defs[i].process;
        var bits = re.exec(color_string);
        if (bits) {
            channels = processor(bits);
            this.r = channels[0];
            this.g = channels[1];
            this.b = channels[2];
            this.ok = true;
        }

    }

    // validate/cleanup values
    this.r = (this.r < 0 || isNaN(this.r)) ? 0 : ((this.r > 255) ? 255 : this.r);
    this.g = (this.g < 0 || isNaN(this.g)) ? 0 : ((this.g > 255) ? 255 : this.g);
    this.b = (this.b < 0 || isNaN(this.b)) ? 0 : ((this.b > 255) ? 255 : this.b);

    // some getters
    this.toRGB = function () {
        return 'rgb(' + this.r + ', ' + this.g + ', ' + this.b + ')';
    }
    this.toHex = function () {
        var r = this.r.toString(16);
        var g = this.g.toString(16);
        var b = this.b.toString(16);
        if (r.length == 1) r = '0' + r;
        if (g.length == 1) g = '0' + g;
        if (b.length == 1) b = '0' + b;
        return '#' + r + g + b;
    }

    // help
    this.getHelpXML = function () {

        var examples = new Array();
        // add regexps
        for (var i = 0; i < color_defs.length; i++) {
            var example = color_defs[i].example;
            for (var j = 0; j < example.length; j++) {
                examples[examples.length] = example[j];
            }
        }
        // add type-in colors
        for (var sc in simple_colors) {
            examples[examples.length] = sc;
        }

        var xml = document.createElement('ul');
        xml.setAttribute('id', 'rgbcolor-examples');
        for (var i = 0; i < examples.length; i++) {
            try {
                var list_item = document.createElement('li');
                var list_color = new RGBColor(examples[i]);
                var example_div = document.createElement('div');
                example_div.style.cssText =
                        'margin: 3px; '
                        + 'border: 1px solid black; '
                        + 'background:' + list_color.toHex() + '; '
                        + 'color:' + list_color.toHex()
                ;
                example_div.appendChild(document.createTextNode('test'));
                var list_item_value = document.createTextNode(
                    ' ' + examples[i] + ' -> ' + list_color.toRGB() + ' -> ' + list_color.toHex()
                );
                list_item.appendChild(example_div);
                list_item.appendChild(list_item_value);
                xml.appendChild(list_item);

            } catch(e){}
        }
        return xml;

    }

}

/**
 * @license canvg.js - Javascript SVG parser and renderer on Canvas
 * MIT Licensed 
 * Gabe Lerner (gabelerner@gmail.com)
 * http://code.google.com/p/canvg/
 *
 * Requires: rgbcolor.js - http://www.phpied.com/rgb-color-parser-in-javascript/
 *
 */
if(!window.console) {
	window.console = {};
	window.console.log = function(str) {};
	window.console.dir = function(str) {};
}

if(!Array.prototype.indexOf){
	Array.prototype.indexOf = function(obj){
		for(var i=0; i<this.length; i++){
			if(this[i]==obj){
				return i;
			}
		}
		return -1;
	}
}

(function(){
	// canvg(target, s)
	// empty parameters: replace all 'svg' elements on page with 'canvas' elements
	// target: canvas element or the id of a canvas element
	// s: svg string, url to svg file, or xml document
	// opts: optional hash of options
	//		 ignoreMouse: true => ignore mouse events
	//		 ignoreAnimation: true => ignore animations
	//		 ignoreDimensions: true => does not try to resize canvas
	//		 ignoreClear: true => does not clear canvas
	//		 offsetX: int => draws at a x offset
	//		 offsetY: int => draws at a y offset
	//		 scaleWidth: int => scales horizontally to width
	//		 scaleHeight: int => scales vertically to height
	//		 renderCallback: function => will call the function after the first render is completed
	//		 forceRedraw: function => will call the function on every frame, if it returns true, will redraw
	this.canvg = function (target, s, opts) {
		// no parameters
		if (target == null && s == null && opts == null) {
			var svgTags = document.getElementsByTagName('svg');
			for (var i=0; i<svgTags.length; i++) {
				var svgTag = svgTags[i];
				var c = document.createElement('canvas');
				c.width = svgTag.clientWidth;
				c.height = svgTag.clientHeight;
				svgTag.parentNode.insertBefore(c, svgTag);
				svgTag.parentNode.removeChild(svgTag);
				var div = document.createElement('div');
				div.appendChild(svgTag);
				canvg(c, div.innerHTML);
			}
			return;
		}	
		opts = opts || {};
	
		if (typeof target == 'string') {
			target = document.getElementById(target);
		}
		
		// reuse class per canvas
		var svg;
		if (target.svg == null) {
			svg = build();
			target.svg = svg;
		}
		else {
			svg = target.svg;
			svg.stop();
		}
		svg.opts = opts;
		
		var ctx = target.getContext('2d');
		if (typeof(s.documentElement) != 'undefined') {
			// load from xml doc
			svg.loadXmlDoc(ctx, s);
		}
		else if (s.substr(0,1) == '<') {
			// load from xml string
			svg.loadXml(ctx, s);
		}
		else {
			// load from url
			svg.load(ctx, s);
		}
	}

	function build() {
		var svg = { };
		
		svg.FRAMERATE = 30;
		svg.MAX_VIRTUAL_PIXELS = 30000;
		
		// globals
		svg.init = function(ctx) {
			svg.Definitions = {};
			svg.Styles = {};
			svg.Animations = [];
			svg.Images = [];
			svg.ctx = ctx;
			svg.ViewPort = new (function () {
				this.viewPorts = [];
				this.Clear = function() { this.viewPorts = []; }
				this.SetCurrent = function(width, height) { this.viewPorts.push({ width: width, height: height }); }
				this.RemoveCurrent = function() { this.viewPorts.pop(); }
				this.Current = function() { return this.viewPorts[this.viewPorts.length - 1]; }
				this.width = function() { return this.Current().width; }
				this.height = function() { return this.Current().height; }
				this.ComputeSize = function(d) {
					if (d != null && typeof(d) == 'number') return d;
					if (d == 'x') return this.width();
					if (d == 'y') return this.height();
					return Math.sqrt(Math.pow(this.width(), 2) + Math.pow(this.height(), 2)) / Math.sqrt(2);			
				}
			});
		}
		svg.init();
		
		// images loaded
		svg.ImagesLoaded = function() { 
			for (var i=0; i<svg.Images.length; i++) {
				if (!svg.Images[i].loaded) return false;
			}
			return true;
		}

		// trim
		svg.trim = function(s) { return s.replace(/^\s+|\s+$/g, ''); }
		
		// compress spaces
		svg.compressSpaces = function(s) { return s.replace(/[\s\r\t\n]+/gm,' '); }
		
		// ajax
		svg.ajax = function(url) {
			var AJAX;
			if(window.XMLHttpRequest){AJAX=new XMLHttpRequest();}
			else{AJAX=new ActiveXObject('Microsoft.XMLHTTP');}
			if(AJAX){
			   AJAX.open('GET',url,false);
			   AJAX.send(null);
			   return AJAX.responseText;
			}
			return null;
		} 
		
		// parse xml
		svg.parseXml = function(xml) {
			if (window.DOMParser)
			{
				var parser = new DOMParser();
				return parser.parseFromString(xml, 'text/xml');
			}
			else 
			{
				xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
				var xmlDoc = new ActiveXObject('Microsoft.XMLDOM');
				xmlDoc.async = 'false';
				xmlDoc.loadXML(xml); 
				return xmlDoc;
			}		
		}
		
		svg.Property = function(name, value) {
			this.name = name;
			this.value = value;
			
			this.hasValue = function() {
				return (this.value != null && this.value !== '');
			}
							
			// return the numerical value of the property
			this.numValue = function() {
				if (!this.hasValue()) return 0;
				
				var n = parseFloat(this.value);
				if ((this.value + '').match(/%$/)) {
					n = n / 100.0;
				}
				return n;
			}
			
			this.valueOrDefault = function(def) {
				if (this.hasValue()) return this.value;
				return def;
			}
			
			this.numValueOrDefault = function(def) {
				if (this.hasValue()) return this.numValue();
				return def;
			}
			
			/* EXTENSIONS */
			var that = this;
			
			// color extensions
			this.Color = {
				// augment the current color value with the opacity
				addOpacity: function(opacity) {
					var newValue = that.value;
					if (opacity != null && opacity != '') {
						var color = new RGBColor(that.value);
						if (color.ok) {
							newValue = 'rgba(' + color.r + ', ' + color.g + ', ' + color.b + ', ' + opacity + ')';
						}
					}
					return new svg.Property(that.name, newValue);
				}
			}
			
			// definition extensions
			this.Definition = {
				// get the definition from the definitions table
				getDefinition: function() {
					var name = that.value.replace(/^(url\()?#([^\)]+)\)?$/, '$2');
					return svg.Definitions[name];
				},
				
				isUrl: function() {
					return that.value.indexOf('url(') == 0
				},
				
				getFillStyle: function(e) {
					var def = this.getDefinition();
					
					// gradient
					if (def != null && def.createGradient) {
						return def.createGradient(svg.ctx, e);
					}
					
					// pattern
					if (def != null && def.createPattern) {
						return def.createPattern(svg.ctx, e);
					}
					
					return null;
				}
			}
			
			// length extensions
			this.Length = {
				DPI: function(viewPort) {
					return 96.0; // TODO: compute?
				},
				
				EM: function(viewPort) {
					var em = 12;
					
					var fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
					if (fontSize.hasValue()) em = fontSize.Length.toPixels(viewPort);
					
					return em;
				},
			
				// get the length as pixels
				toPixels: function(viewPort) {
					if (!that.hasValue()) return 0;
					var s = that.value+'';
					if (s.match(/em$/)) return that.numValue() * this.EM(viewPort);
					if (s.match(/ex$/)) return that.numValue() * this.EM(viewPort) / 2.0;
					if (s.match(/px$/)) return that.numValue();
					if (s.match(/pt$/)) return that.numValue() * 1.25;
					if (s.match(/pc$/)) return that.numValue() * 15;
					if (s.match(/cm$/)) return that.numValue() * this.DPI(viewPort) / 2.54;
					if (s.match(/mm$/)) return that.numValue() * this.DPI(viewPort) / 25.4;
					if (s.match(/in$/)) return that.numValue() * this.DPI(viewPort);
					if (s.match(/%$/)) return that.numValue() * svg.ViewPort.ComputeSize(viewPort);
					return that.numValue();
				}
			}
			
			// time extensions
			this.Time = {
				// get the time as milliseconds
				toMilliseconds: function() {
					if (!that.hasValue()) return 0;
					var s = that.value+'';
					if (s.match(/s$/)) return that.numValue() * 1000;
					if (s.match(/ms$/)) return that.numValue();
					return that.numValue();
				}
			}
			
			// angle extensions
			this.Angle = {
				// get the angle as radians
				toRadians: function() {
					if (!that.hasValue()) return 0;
					var s = that.value+'';
					if (s.match(/deg$/)) return that.numValue() * (Math.PI / 180.0);
					if (s.match(/grad$/)) return that.numValue() * (Math.PI / 200.0);
					if (s.match(/rad$/)) return that.numValue();
					return that.numValue() * (Math.PI / 180.0);
				}
			}
		}
		
		// fonts
		svg.Font = new (function() {
			this.Styles = ['normal','italic','oblique','inherit'];
			this.Variants = ['normal','small-caps','inherit'];
			this.Weights = ['normal','bold','bolder','lighter','100','200','300','400','500','600','700','800','900','inherit'];
			
			this.CreateFont = function(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) { 
				var f = inherit != null ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
				return { 
					fontFamily: fontFamily || f.fontFamily, 
					fontSize: fontSize || f.fontSize, 
					fontStyle: fontStyle || f.fontStyle, 
					fontWeight: fontWeight || f.fontWeight, 
					fontVariant: fontVariant || f.fontVariant,
					toString: function () { return [this.fontStyle, this.fontVariant, this.fontWeight, this.fontSize, this.fontFamily].join(' ') } 
				} 
			}
			
			var that = this;
			this.Parse = function(s) {
				var f = {};
				var d = svg.trim(svg.compressSpaces(s || '')).split(' ');
				var set = { fontSize: false, fontStyle: false, fontWeight: false, fontVariant: false }
				var ff = '';
				for (var i=0; i<d.length; i++) {
					if (!set.fontStyle && that.Styles.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontStyle = d[i]; set.fontStyle = true; }
					else if (!set.fontVariant && that.Variants.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontVariant = d[i]; set.fontStyle = set.fontVariant = true;	}
					else if (!set.fontWeight && that.Weights.indexOf(d[i]) != -1) {	if (d[i] != 'inherit') f.fontWeight = d[i]; set.fontStyle = set.fontVariant = set.fontWeight = true; }
					else if (!set.fontSize) { if (d[i] != 'inherit') f.fontSize = d[i].split('/')[0]; set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true; }
					else { if (d[i] != 'inherit') ff += d[i]; }
				} if (ff != '') f.fontFamily = ff;
				return f;
			}
		});
		
		// points and paths
		svg.ToNumberArray = function(s) {
			var a = svg.trim(svg.compressSpaces((s || '').replace(/,/g, ' '))).split(' ');
			for (var i=0; i<a.length; i++) {
				a[i] = parseFloat(a[i]);
			}
			return a;
		}		
		svg.Point = function(x, y) {
			this.x = x;
			this.y = y;
			
			this.angleTo = function(p) {
				return Math.atan2(p.y - this.y, p.x - this.x);
			}
			
			this.applyTransform = function(v) {
				var xp = this.x * v[0] + this.y * v[2] + v[4];
				var yp = this.x * v[1] + this.y * v[3] + v[5];
				this.x = xp;
				this.y = yp;
			}
		}
		svg.CreatePoint = function(s) {
			var a = svg.ToNumberArray(s);
			return new svg.Point(a[0], a[1]);
		}
		svg.CreatePath = function(s) {
			var a = svg.ToNumberArray(s);
			var path = [];
			for (var i=0; i<a.length; i+=2) {
				path.push(new svg.Point(a[i], a[i+1]));
			}
			return path;
		}
		
		// bounding box
		svg.BoundingBox = function(x1, y1, x2, y2) { // pass in initial points if you want
			this.x1 = Number.NaN;
			this.y1 = Number.NaN;
			this.x2 = Number.NaN;
			this.y2 = Number.NaN;
			
			this.x = function() { return this.x1; }
			this.y = function() { return this.y1; }
			this.width = function() { return this.x2 - this.x1; }
			this.height = function() { return this.y2 - this.y1; }
			
			this.addPoint = function(x, y) {	
				if (x != null) {
					if (isNaN(this.x1) || isNaN(this.x2)) {
						this.x1 = x;
						this.x2 = x;
					}
					if (x < this.x1) this.x1 = x;
					if (x > this.x2) this.x2 = x;
				}
			
				if (y != null) {
					if (isNaN(this.y1) || isNaN(this.y2)) {
						this.y1 = y;
						this.y2 = y;
					}
					if (y < this.y1) this.y1 = y;
					if (y > this.y2) this.y2 = y;
				}
			}			
			this.addX = function(x) { this.addPoint(x, null); }
			this.addY = function(y) { this.addPoint(null, y); }
			
			this.addBoundingBox = function(bb) {
				this.addPoint(bb.x1, bb.y1);
				this.addPoint(bb.x2, bb.y2);
			}
			
			this.addQuadraticCurve = function(p0x, p0y, p1x, p1y, p2x, p2y) {
				var cp1x = p0x + 2/3 * (p1x - p0x); // CP1 = QP0 + 2/3 *(QP1-QP0)
				var cp1y = p0y + 2/3 * (p1y - p0y); // CP1 = QP0 + 2/3 *(QP1-QP0)
				var cp2x = cp1x + 1/3 * (p2x - p0x); // CP2 = CP1 + 1/3 *(QP2-QP0)
				var cp2y = cp1y + 1/3 * (p2y - p0y); // CP2 = CP1 + 1/3 *(QP2-QP0)
				this.addBezierCurve(p0x, p0y, cp1x, cp2x, cp1y,	cp2y, p2x, p2y);
			}
			
			this.addBezierCurve = function(p0x, p0y, p1x, p1y, p2x, p2y, p3x, p3y) {
				// from http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
				var p0 = [p0x, p0y], p1 = [p1x, p1y], p2 = [p2x, p2y], p3 = [p3x, p3y];
				this.addPoint(p0[0], p0[1]);
				this.addPoint(p3[0], p3[1]);
				
				for (i=0; i<=1; i++) {
					var f = function(t) { 
						return Math.pow(1-t, 3) * p0[i]
						+ 3 * Math.pow(1-t, 2) * t * p1[i]
						+ 3 * (1-t) * Math.pow(t, 2) * p2[i]
						+ Math.pow(t, 3) * p3[i];
					}
					
					var b = 6 * p0[i] - 12 * p1[i] + 6 * p2[i];
					var a = -3 * p0[i] + 9 * p1[i] - 9 * p2[i] + 3 * p3[i];
					var c = 3 * p1[i] - 3 * p0[i];
					
					if (a == 0) {
						if (b == 0) continue;
						var t = -c / b;
						if (0 < t && t < 1) {
							if (i == 0) this.addX(f(t));
							if (i == 1) this.addY(f(t));
						}
						continue;
					}
					
					var b2ac = Math.pow(b, 2) - 4 * c * a;
					if (b2ac < 0) continue;
					var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
					if (0 < t1 && t1 < 1) {
						if (i == 0) this.addX(f(t1));
						if (i == 1) this.addY(f(t1));
					}
					var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
					if (0 < t2 && t2 < 1) {
						if (i == 0) this.addX(f(t2));
						if (i == 1) this.addY(f(t2));
					}
				}
			}
			
			this.isPointInBox = function(x, y) {
				return (this.x1 <= x && x <= this.x2 && this.y1 <= y && y <= this.y2);
			}
			
			this.addPoint(x1, y1);
			this.addPoint(x2, y2);
		}
		
		// transforms
		svg.Transform = function(v) {	
			var that = this;
			this.Type = {}
		
			// translate
			this.Type.translate = function(s) {
				this.p = svg.CreatePoint(s);			
				this.apply = function(ctx) {
					ctx.translate(this.p.x || 0.0, this.p.y || 0.0);
				}
				this.applyToPoint = function(p) {
					p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
				}
			}
			
			// rotate
			this.Type.rotate = function(s) {
				var a = svg.ToNumberArray(s);
				this.angle = new svg.Property('angle', a[0]);
				this.cx = a[1] || 0;
				this.cy = a[2] || 0;
				this.apply = function(ctx) {
					ctx.translate(this.cx, this.cy);
					ctx.rotate(this.angle.Angle.toRadians());
					ctx.translate(-this.cx, -this.cy);
				}
				this.applyToPoint = function(p) {
					var a = this.angle.Angle.toRadians();
					p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
					p.applyTransform([Math.cos(a), Math.sin(a), -Math.sin(a), Math.cos(a), 0, 0]);
					p.applyTransform([1, 0, 0, 1, -this.p.x || 0.0, -this.p.y || 0.0]);
				}			
			}
			
			this.Type.scale = function(s) {
				this.p = svg.CreatePoint(s);
				this.apply = function(ctx) {
					ctx.scale(this.p.x || 1.0, this.p.y || this.p.x || 1.0);
				}
				this.applyToPoint = function(p) {
					p.applyTransform([this.p.x || 0.0, 0, 0, this.p.y || 0.0, 0, 0]);
				}				
			}
			
			this.Type.matrix = function(s) {
				this.m = svg.ToNumberArray(s);
				this.apply = function(ctx) {
					ctx.transform(this.m[0], this.m[1], this.m[2], this.m[3], this.m[4], this.m[5]);
				}
				this.applyToPoint = function(p) {
					p.applyTransform(this.m);
				}					
			}
			
			this.Type.SkewBase = function(s) {
				this.base = that.Type.matrix;
				this.base(s);
				this.angle = new svg.Property('angle', s);
			}
			this.Type.SkewBase.prototype = new this.Type.matrix;
			
			this.Type.skewX = function(s) {
				this.base = that.Type.SkewBase;
				this.base(s);
				this.m = [1, 0, Math.tan(this.angle.Angle.toRadians()), 1, 0, 0];
			}
			this.Type.skewX.prototype = new this.Type.SkewBase;
			
			this.Type.skewY = function(s) {
				this.base = that.Type.SkewBase;
				this.base(s);
				this.m = [1, Math.tan(this.angle.Angle.toRadians()), 0, 1, 0, 0];
			}
			this.Type.skewY.prototype = new this.Type.SkewBase;
		
			this.transforms = [];
			
			this.apply = function(ctx) {
				for (var i=0; i<this.transforms.length; i++) {
					this.transforms[i].apply(ctx);
				}
			}
			
			this.applyToPoint = function(p) {
				for (var i=0; i<this.transforms.length; i++) {
					this.transforms[i].applyToPoint(p);
				}
			}
			
			var data = svg.trim(svg.compressSpaces(v)).split(/\s(?=[a-z])/);
			for (var i=0; i<data.length; i++) {
				var type = data[i].split('(')[0];
				var s = data[i].split('(')[1].replace(')','');
				var transform = new this.Type[type](s);
				this.transforms.push(transform);
			}
		}
		
		// aspect ratio
		svg.AspectRatio = function(ctx, aspectRatio, width, desiredWidth, height, desiredHeight, minX, minY, refX, refY) {
			// aspect ratio - http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute
			aspectRatio = svg.compressSpaces(aspectRatio);
			aspectRatio = aspectRatio.replace(/^defer\s/,''); // ignore defer
			var align = aspectRatio.split(' ')[0] || 'xMidYMid';
			var meetOrSlice = aspectRatio.split(' ')[1] || 'meet';					
	
			// calculate scale
			var scaleX = width / desiredWidth;
			var scaleY = height / desiredHeight;
			var scaleMin = Math.min(scaleX, scaleY);
			var scaleMax = Math.max(scaleX, scaleY);
			if (meetOrSlice == 'meet') { desiredWidth *= scaleMin; desiredHeight *= scaleMin; }
			if (meetOrSlice == 'slice') { desiredWidth *= scaleMax; desiredHeight *= scaleMax; }	
			
			refX = new svg.Property('refX', refX);
			refY = new svg.Property('refY', refY);
			if (refX.hasValue() && refY.hasValue()) {				
				ctx.translate(-scaleMin * refX.Length.toPixels('x'), -scaleMin * refY.Length.toPixels('y'));
			} 
			else {					
				// align
				if (align.match(/^xMid/) && ((meetOrSlice == 'meet' && scaleMin == scaleY) || (meetOrSlice == 'slice' && scaleMax == scaleY))) ctx.translate(width / 2.0 - desiredWidth / 2.0, 0); 
				if (align.match(/YMid$/) && ((meetOrSlice == 'meet' && scaleMin == scaleX) || (meetOrSlice == 'slice' && scaleMax == scaleX))) ctx.translate(0, height / 2.0 - desiredHeight / 2.0); 
				if (align.match(/^xMax/) && ((meetOrSlice == 'meet' && scaleMin == scaleY) || (meetOrSlice == 'slice' && scaleMax == scaleY))) ctx.translate(width - desiredWidth, 0); 
				if (align.match(/YMax$/) && ((meetOrSlice == 'meet' && scaleMin == scaleX) || (meetOrSlice == 'slice' && scaleMax == scaleX))) ctx.translate(0, height - desiredHeight); 
			}
			
			// scale
			if (align == 'none') ctx.scale(scaleX, scaleY);
			else if (meetOrSlice == 'meet') ctx.scale(scaleMin, scaleMin); 
			else if (meetOrSlice == 'slice') ctx.scale(scaleMax, scaleMax); 	
			
			// translate
			ctx.translate(minX == null ? 0 : -minX, minY == null ? 0 : -minY);			
		}
		
		// elements
		svg.Element = {}
		
		svg.Element.ElementBase = function(node) {	
			this.attributes = {};
			this.styles = {};
			this.children = [];
			
			// get or create attribute
			this.attribute = function(name, createIfNotExists) {
				var a = this.attributes[name];
				if (a != null) return a;
							
				a = new svg.Property(name, '');
				if (createIfNotExists == true) this.attributes[name] = a;
				return a;
			}
			
			// get or create style, crawls up node tree
			this.style = function(name, createIfNotExists) {
				var s = this.styles[name];
				if (s != null) return s;
				
				var a = this.attribute(name);
				if (a != null && a.hasValue()) {
					return a;
				}
				
				var p = this.parent;
				if (p != null) {
					var ps = p.style(name);
					if (ps != null && ps.hasValue()) {
						return ps;
					}
				}
					
				s = new svg.Property(name, '');
				if (createIfNotExists == true) this.styles[name] = s;
				return s;
			}
			
			// base render
			this.render = function(ctx) {
				// don't render display=none
				if (this.style('display').value == 'none') return;
				
				// don't render visibility=hidden
				if (this.attribute('visibility').value == 'hidden') return;
			
				ctx.save();
					this.setContext(ctx);
						// mask
						if (this.attribute('mask').hasValue()) {
							var mask = this.attribute('mask').Definition.getDefinition();
							if (mask != null) mask.apply(ctx, this);
						}
						else if (this.style('filter').hasValue()) {
							var filter = this.style('filter').Definition.getDefinition();
							if (filter != null) filter.apply(ctx, this);
						}
						else this.renderChildren(ctx);				
					this.clearContext(ctx);
				ctx.restore();
			}
			
			// base set context
			this.setContext = function(ctx) {
				// OVERRIDE ME!
			}
			
			// base clear context
			this.clearContext = function(ctx) {
				// OVERRIDE ME!
			}			
			
			// base render children
			this.renderChildren = function(ctx) {
				for (var i=0; i<this.children.length; i++) {
					this.children[i].render(ctx);
				}
			}
			
			this.addChild = function(childNode, create) {
				var child = childNode;
				if (create) child = svg.CreateElement(childNode);
				child.parent = this;
				this.children.push(child);			
			}
				
			if (node != null && node.nodeType == 1) { //ELEMENT_NODE
				// add children
				for (var i=0; i<node.childNodes.length; i++) {
					var childNode = node.childNodes[i];
					if (childNode.nodeType == 1) this.addChild(childNode, true); //ELEMENT_NODE
				}
				
				// add attributes
				for (var i=0; i<node.attributes.length; i++) {
					var attribute = node.attributes[i];
					this.attributes[attribute.nodeName] = new svg.Property(attribute.nodeName, attribute.nodeValue);
				}
										
				// add tag styles
				var styles = svg.Styles[node.nodeName];
				if (styles != null) {
					for (var name in styles) {
						this.styles[name] = styles[name];
					}
				}					
				
				// add class styles
				if (this.attribute('class').hasValue()) {
					var classes = svg.compressSpaces(this.attribute('class').value).split(' ');
					for (var j=0; j<classes.length; j++) {
						styles = svg.Styles['.'+classes[j]];
						if (styles != null) {
							for (var name in styles) {
								this.styles[name] = styles[name];
							}
						}
						styles = svg.Styles[node.nodeName+'.'+classes[j]];
						if (styles != null) {
							for (var name in styles) {
								this.styles[name] = styles[name];
							}
						}
					}
				}
				
				// add inline styles
				if (this.attribute('style').hasValue()) {
					var styles = this.attribute('style').value.split(';');
					for (var i=0; i<styles.length; i++) {
						if (svg.trim(styles[i]) != '') {
							var style = styles[i].split(':');
							var name = svg.trim(style[0]);
							var value = svg.trim(style[1]);
							this.styles[name] = new svg.Property(name, value);
						}
					}
				}	

				// add id
				if (this.attribute('id').hasValue()) {
					if (svg.Definitions[this.attribute('id').value] == null) {
						svg.Definitions[this.attribute('id').value] = this;
					}
				}
			}
		}
		
		svg.Element.RenderedElementBase = function(node) {
			this.base = svg.Element.ElementBase;
			this.base(node);
			
			this.setContext = function(ctx) {
				// fill
				if (this.style('fill').Definition.isUrl()) {
					var fs = this.style('fill').Definition.getFillStyle(this);
					if (fs != null) ctx.fillStyle = fs;
				}
				else if (this.style('fill').hasValue()) {
					var fillStyle = this.style('fill');
					if (this.style('fill-opacity').hasValue()) fillStyle = fillStyle.Color.addOpacity(this.style('fill-opacity').value);
					ctx.fillStyle = (fillStyle.value == 'none' ? 'rgba(0,0,0,0)' : fillStyle.value);
				}
									
				// stroke
				if (this.style('stroke').Definition.isUrl()) {
					var fs = this.style('stroke').Definition.getFillStyle(this);
					if (fs != null) ctx.strokeStyle = fs;
				}
				else if (this.style('stroke').hasValue()) {
					var strokeStyle = this.style('stroke');
					if (this.style('stroke-opacity').hasValue()) strokeStyle = strokeStyle.Color.addOpacity(this.style('stroke-opacity').value);
					ctx.strokeStyle = (strokeStyle.value == 'none' ? 'rgba(0,0,0,0)' : strokeStyle.value);
				}
				if (this.style('stroke-width').hasValue()) ctx.lineWidth = this.style('stroke-width').Length.toPixels();
				if (this.style('stroke-linecap').hasValue()) ctx.lineCap = this.style('stroke-linecap').value;
				if (this.style('stroke-linejoin').hasValue()) ctx.lineJoin = this.style('stroke-linejoin').value;
				if (this.style('stroke-miterlimit').hasValue()) ctx.miterLimit = this.style('stroke-miterlimit').value;

				// font
				if (typeof(ctx.font) != 'undefined') {
					ctx.font = svg.Font.CreateFont( 
						this.style('font-style').value, 
						this.style('font-variant').value, 
						this.style('font-weight').value, 
						this.style('font-size').hasValue() ? this.style('font-size').Length.toPixels() + 'px' : '', 
						this.style('font-family').value).toString();
				}
				
				// transform
				if (this.attribute('transform').hasValue()) { 
					var transform = new svg.Transform(this.attribute('transform').value);
					transform.apply(ctx);
				}
				
				// clip
				if (this.attribute('clip-path').hasValue()) {
					var clip = this.attribute('clip-path').Definition.getDefinition();
					if (clip != null) clip.apply(ctx);
				}
				
				// opacity
				if (this.style('opacity').hasValue()) {
					ctx.globalAlpha = this.style('opacity').numValue();
				}
			}		
		}
		svg.Element.RenderedElementBase.prototype = new svg.Element.ElementBase;
		
		svg.Element.PathElementBase = function(node) {
			this.base = svg.Element.RenderedElementBase;
			this.base(node);
			
			this.path = function(ctx) {
				if (ctx != null) ctx.beginPath();
				return new svg.BoundingBox();
			}
			
			this.renderChildren = function(ctx) {
				this.path(ctx);
				svg.Mouse.checkPath(this, ctx);
				if (ctx.fillStyle != '') ctx.fill();
				if (ctx.strokeStyle != '') ctx.stroke();
				
				var markers = this.getMarkers();
				if (markers != null) {
					if (this.style('marker-start').Definition.isUrl()) {
						var marker = this.style('marker-start').Definition.getDefinition();
						marker.render(ctx, markers[0][0], markers[0][1]);
					}
					if (this.style('marker-mid').Definition.isUrl()) {
						var marker = this.style('marker-mid').Definition.getDefinition();
						for (var i=1;i<markers.length-1;i++) {
							marker.render(ctx, markers[i][0], markers[i][1]);
						}
					}
					if (this.style('marker-end').Definition.isUrl()) {
						var marker = this.style('marker-end').Definition.getDefinition();
						marker.render(ctx, markers[markers.length-1][0], markers[markers.length-1][1]);
					}
				}					
			}
			
			this.getBoundingBox = function() {
				return this.path();
			}
			
			this.getMarkers = function() {
				return null;
			}
		}
		svg.Element.PathElementBase.prototype = new svg.Element.RenderedElementBase;
		
		// svg element
		svg.Element.svg = function(node) {
			this.base = svg.Element.RenderedElementBase;
			this.base(node);
			
			this.baseClearContext = this.clearContext;
			this.clearContext = function(ctx) {
				this.baseClearContext(ctx);
				svg.ViewPort.RemoveCurrent();
			}
			
			this.baseSetContext = this.setContext;
			this.setContext = function(ctx) {
				// initial values
				ctx.strokeStyle = 'rgba(0,0,0,0)';
				ctx.lineCap = 'butt';
				ctx.lineJoin = 'miter';
				ctx.miterLimit = 4;			
			
				this.baseSetContext(ctx);
				
				// create new view port
				if (this.attribute('x').hasValue() && this.attribute('y').hasValue()) {
					ctx.translate(this.attribute('x').Length.toPixels('x'), this.attribute('y').Length.toPixels('y'));
				}
				
				var width = svg.ViewPort.width();
				var height = svg.ViewPort.height();
				if (typeof(this.root) == 'undefined' && this.attribute('width').hasValue() && this.attribute('height').hasValue()) {
					width = this.attribute('width').Length.toPixels('x');
					height = this.attribute('height').Length.toPixels('y');
					
					var x = 0;
					var y = 0;
					if (this.attribute('refX').hasValue() && this.attribute('refY').hasValue()) {
						x = -this.attribute('refX').Length.toPixels('x');
						y = -this.attribute('refY').Length.toPixels('y');
					}
					
					ctx.beginPath();
					ctx.moveTo(x, y);
					ctx.lineTo(width, y);
					ctx.lineTo(width, height);
					ctx.lineTo(x, height);
					ctx.closePath();
					ctx.clip();
				}
				svg.ViewPort.SetCurrent(width, height);	
						
				// viewbox
				if (this.attribute('viewBox').hasValue()) {				
					var viewBox = svg.ToNumberArray(this.attribute('viewBox').value);
					var minX = viewBox[0];
					var minY = viewBox[1];
					width = viewBox[2];
					height = viewBox[3];
					
					svg.AspectRatio(ctx,
									this.attribute('preserveAspectRatio').value, 
									svg.ViewPort.width(), 
									width,
									svg.ViewPort.height(),
									height,
									minX,
									minY,
									this.attribute('refX').value,
									this.attribute('refY').value);
										
					svg.ViewPort.RemoveCurrent();	
					svg.ViewPort.SetCurrent(viewBox[2], viewBox[3]);						
				}				
			}
		}
		svg.Element.svg.prototype = new svg.Element.RenderedElementBase;

		// rect element
		svg.Element.rect = function(node) {
			this.base = svg.Element.PathElementBase;
			this.base(node);
			
			this.path = function(ctx) {
				var x = this.attribute('x').Length.toPixels('x');
				var y = this.attribute('y').Length.toPixels('y');
				var width = this.attribute('width').Length.toPixels('x');
				var height = this.attribute('height').Length.toPixels('y');
				var rx = this.attribute('rx').Length.toPixels('x');
				var ry = this.attribute('ry').Length.toPixels('y');
				if (this.attribute('rx').hasValue() && !this.attribute('ry').hasValue()) ry = rx;
				if (this.attribute('ry').hasValue() && !this.attribute('rx').hasValue()) rx = ry;
				
				if (ctx != null) {
					ctx.beginPath();
					ctx.moveTo(x + rx, y);
					ctx.lineTo(x + width - rx, y);
					ctx.quadraticCurveTo(x + width, y, x + width, y + ry)
					ctx.lineTo(x + width, y + height - ry);
					ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height)
					ctx.lineTo(x + rx, y + height);
					ctx.quadraticCurveTo(x, y + height, x, y + height - ry)
					ctx.lineTo(x, y + ry);
					ctx.quadraticCurveTo(x, y, x + rx, y)
					ctx.closePath();
				}
				
				return new svg.BoundingBox(x, y, x + width, y + height);
			}
		}
		svg.Element.rect.prototype = new svg.Element.PathElementBase;
		
		// circle element
		svg.Element.circle = function(node) {
			this.base = svg.Element.PathElementBase;
			this.base(node);
			
			this.path = function(ctx) {
				var cx = this.attribute('cx').Length.toPixels('x');
				var cy = this.attribute('cy').Length.toPixels('y');
				var r = this.attribute('r').Length.toPixels();
			
				if (ctx != null) {
					ctx.beginPath();
					ctx.arc(cx, cy, r, 0, Math.PI * 2, true); 
					ctx.closePath();
				}
				
				return new svg.BoundingBox(cx - r, cy - r, cx + r, cy + r);
			}
		}
		svg.Element.circle.prototype = new svg.Element.PathElementBase;	

		// ellipse element
		svg.Element.ellipse = function(node) {
			this.base = svg.Element.PathElementBase;
			this.base(node);
			
			this.path = function(ctx) {
				var KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
				var rx = this.attribute('rx').Length.toPixels('x');
				var ry = this.attribute('ry').Length.toPixels('y');
				var cx = this.attribute('cx').Length.toPixels('x');
				var cy = this.attribute('cy').Length.toPixels('y');
				
				if (ctx != null) {
					ctx.beginPath();
					ctx.moveTo(cx, cy - ry);
					ctx.bezierCurveTo(cx + (KAPPA * rx), cy - ry,  cx + rx, cy - (KAPPA * ry), cx + rx, cy);
					ctx.bezierCurveTo(cx + rx, cy + (KAPPA * ry), cx + (KAPPA * rx), cy + ry, cx, cy + ry);
					ctx.bezierCurveTo(cx - (KAPPA * rx), cy + ry, cx - rx, cy + (KAPPA * ry), cx - rx, cy);
					ctx.bezierCurveTo(cx - rx, cy - (KAPPA * ry), cx - (KAPPA * rx), cy - ry, cx, cy - ry);
					ctx.closePath();
				}
				
				return new svg.BoundingBox(cx - rx, cy - ry, cx + rx, cy + ry);
			}
		}
		svg.Element.ellipse.prototype = new svg.Element.PathElementBase;			
		
		// line element
		svg.Element.line = function(node) {
			this.base = svg.Element.PathElementBase;
			this.base(node);
			
			this.getPoints = function() {
				return [
					new svg.Point(this.attribute('x1').Length.toPixels('x'), this.attribute('y1').Length.toPixels('y')),
					new svg.Point(this.attribute('x2').Length.toPixels('x'), this.attribute('y2').Length.toPixels('y'))];
			}
								
			this.path = function(ctx) {
				var points = this.getPoints();
				
				if (ctx != null) {
					ctx.beginPath();
					ctx.moveTo(points[0].x, points[0].y);
					ctx.lineTo(points[1].x, points[1].y);
				}
				
				return new svg.BoundingBox(points[0].x, points[0].y, points[1].x, points[1].y);
			}
			
			this.getMarkers = function() {
				var points = this.getPoints();	
				var a = points[0].angleTo(points[1]);
				return [[points[0], a], [points[1], a]];
			}
		}
		svg.Element.line.prototype = new svg.Element.PathElementBase;		
				
		// polyline element
		svg.Element.polyline = function(node) {
			this.base = svg.Element.PathElementBase;
			this.base(node);
			
			this.points = svg.CreatePath(this.attribute('points').value);
			this.path = function(ctx) {
				var bb = new svg.BoundingBox(this.points[0].x, this.points[0].y);
				if (ctx != null) {
					ctx.beginPath();
					ctx.moveTo(this.points[0].x, this.points[0].y);
				}
				for (var i=1; i<this.points.length; i++) {
					bb.addPoint(this.points[i].x, this.points[i].y);
					if (ctx != null) ctx.lineTo(this.points[i].x, this.points[i].y);
				}
				return bb;
			}
			
			this.getMarkers = function() {
				var markers = [];
				for (var i=0; i<this.points.length - 1; i++) {
					markers.push([this.points[i], this.points[i].angleTo(this.points[i+1])]);
				}
				markers.push([this.points[this.points.length-1], markers[markers.length-1][1]]);
				return markers;
			}			
		}
		svg.Element.polyline.prototype = new svg.Element.PathElementBase;				
				
		// polygon element
		svg.Element.polygon = function(node) {
			this.base = svg.Element.polyline;
			this.base(node);
			
			this.basePath = this.path;
			this.path = function(ctx) {
				var bb = this.basePath(ctx);
				if (ctx != null) {
					ctx.lineTo(this.points[0].x, this.points[0].y);
					ctx.closePath();
				}
				return bb;
			}
		}
		svg.Element.polygon.prototype = new svg.Element.polyline;

		// path element
		svg.Element.path = function(node) {
			this.base = svg.Element.PathElementBase;
			this.base(node);
					
			var d = this.attribute('d').value;
			// TODO: convert to real lexer based on http://www.w3.org/TR/SVG11/paths.html#PathDataBNF
			d = d.replace(/,/gm,' '); // get rid of all commas
			d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from commands
			d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from commands
			d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([^\s])/gm,'$1 $2'); // separate commands from points
			d = d.replace(/([^\s])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from points
			d = d.replace(/([0-9])([+\-])/gm,'$1 $2'); // separate digits when no comma
			d = d.replace(/(\.[0-9]*)(\.)/gm,'$1 $2'); // separate digits when no comma
			d = d.replace(/([Aa](\s+[0-9]+){3})\s+([01])\s*([01])/gm,'$1 $3 $4 '); // shorthand elliptical arc path syntax
			d = svg.compressSpaces(d); // compress multiple spaces
			d = svg.trim(d);
			this.PathParser = new (function(d) {
				this.tokens = d.split(' ');
				
				this.reset = function() {
					this.i = -1;
					this.command = '';
					this.previousCommand = '';
					this.start = new svg.Point(0, 0);
					this.control = new svg.Point(0, 0);
					this.current = new svg.Point(0, 0);
					this.points = [];
					this.angles = [];
				}
								
				this.isEnd = function() {
					return this.i >= this.tokens.length - 1;
				}
				
				this.isCommandOrEnd = function() {
					if (this.isEnd()) return true;
					return this.tokens[this.i + 1].match(/^[A-Za-z]$/) != null;
				}
				
				this.isRelativeCommand = function() {
					return this.command == this.command.toLowerCase();
				}
							
				this.getToken = function() {
					this.i = this.i + 1;
					return this.tokens[this.i];
				}
				
				this.getScalar = function() {
					return parseFloat(this.getToken());
				}
				
				this.nextCommand = function() {
					this.previousCommand = this.command;
					this.command = this.getToken();
				}				
				
				this.getPoint = function() {
					var p = new svg.Point(this.getScalar(), this.getScalar());
					return this.makeAbsolute(p);
				}
				
				this.getAsControlPoint = function() {
					var p = this.getPoint();
					this.control = p;
					return p;
				}
				
				this.getAsCurrentPoint = function() {
					var p = this.getPoint();
					this.current = p;
					return p;	
				}
				
				this.getReflectedControlPoint = function() {
					if (this.previousCommand.toLowerCase() != 'c' && this.previousCommand.toLowerCase() != 's') {
						return this.current;
					}
					
					// reflect point
					var p = new svg.Point(2 * this.current.x - this.control.x, 2 * this.current.y - this.control.y);					
					return p;
				}
				
				this.makeAbsolute = function(p) {
					if (this.isRelativeCommand()) {
						p.x = this.current.x + p.x;
						p.y = this.current.y + p.y;
					}
					return p;
				}
				
				this.addMarker = function(p, from, priorTo) {
					// if the last angle isn't filled in because we didn't have this point yet ...
					if (priorTo != null && this.angles.length > 0 && this.angles[this.angles.length-1] == null) {
						this.angles[this.angles.length-1] = this.points[this.points.length-1].angleTo(priorTo);
					}
					this.addMarkerAngle(p, from == null ? null : from.angleTo(p));
				}
				
				this.addMarkerAngle = function(p, a) {
					this.points.push(p);
					this.angles.push(a);
				}				
				
				this.getMarkerPoints = function() { return this.points; }
				this.getMarkerAngles = function() {
					for (var i=0; i<this.angles.length; i++) {
						if (this.angles[i] == null) {
							for (var j=i+1; j<this.angles.length; j++) {
								if (this.angles[j] != null) {
									this.angles[i] = this.angles[j];
									break;
								}
							}
						}
					}
					return this.angles;
				}
			})(d);

			this.path = function(ctx) {
				var pp = this.PathParser;
				pp.reset();

				var bb = new svg.BoundingBox();
				if (ctx != null) ctx.beginPath();
				while (!pp.isEnd()) {
					pp.nextCommand();
					switch (pp.command.toUpperCase()) {
					case 'M':
						var p = pp.getAsCurrentPoint();
						pp.addMarker(p);
						bb.addPoint(p.x, p.y);
						if (ctx != null) ctx.moveTo(p.x, p.y);
						pp.start = pp.current;
						while (!pp.isCommandOrEnd()) {
							var p = pp.getAsCurrentPoint();
							pp.addMarker(p, pp.start);
							bb.addPoint(p.x, p.y);
							if (ctx != null) ctx.lineTo(p.x, p.y);
						}
						break;
					case 'L':
						while (!pp.isCommandOrEnd()) {
							var c = pp.current;
							var p = pp.getAsCurrentPoint();
							pp.addMarker(p, c);
							bb.addPoint(p.x, p.y);
							if (ctx != null) ctx.lineTo(p.x, p.y);
						}
						break;
					case 'H':
						while (!pp.isCommandOrEnd()) {
							var newP = new svg.Point((pp.isRelativeCommand() ? pp.current.x : 0) + pp.getScalar(), pp.current.y);
							pp.addMarker(newP, pp.current);
							pp.current = newP;
							bb.addPoint(pp.current.x, pp.current.y);
							if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
						}
						break;
					case 'V':
						while (!pp.isCommandOrEnd()) {
							var newP = new svg.Point(pp.current.x, (pp.isRelativeCommand() ? pp.current.y : 0) + pp.getScalar());
							pp.addMarker(newP, pp.current);
							pp.current = newP;
							bb.addPoint(pp.current.x, pp.current.y);
							if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
						}
						break;
					case 'C':
						while (!pp.isCommandOrEnd()) {
							var curr = pp.current;
							var p1 = pp.getPoint();
							var cntrl = pp.getAsControlPoint();
							var cp = pp.getAsCurrentPoint();
							pp.addMarker(cp, cntrl, p1);
							bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
							if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
						}
						break;
					case 'S':
						while (!pp.isCommandOrEnd()) {
							var curr = pp.current;
							var p1 = pp.getReflectedControlPoint();
							var cntrl = pp.getAsControlPoint();
							var cp = pp.getAsCurrentPoint();
							pp.addMarker(cp, cntrl, p1);
							bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
							if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
						}
						break;
					case 'Q':
						while (!pp.isCommandOrEnd()) {
							var curr = pp.current;
							var cntrl = pp.getAsControlPoint();
							var cp = pp.getAs