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2954 mathias 1 
/*!
2 
 * Chart.js
3 
 * http://chartjs.org/
4 
 * Version: 1.1.1
5 
 *
6 
 * Copyright 2015 Nick Downie
7 
 * Released under the MIT license
8 
 * https://github.com/nnnick/Chart.js/blob/master/LICENSE.md
9 
 */
10 
 
11 
 
12 
(function(){
13 
 
14 
	"use strict";
15 
 
16 
	//Declare root variable - window in the browser, global on the server
17 
	var root = this,
18 
		previous = root.Chart;
19 
 
20 
	//Occupy the global variable of Chart, and create a simple base class
21 
	var Chart = function(context){
22 
		var chart = this;
23 
		this.canvas = context.canvas;
24 
 
25 
		this.ctx = context;
26 
 
27 
		//Variables global to the chart
28 
		var computeDimension = function(element,dimension)
29 
		{
30 
			if (element['offset'+dimension])
31 
			{
32 
				return element['offset'+dimension];
33 
			}
34 
			else
35 
			{
36 
				return document.defaultView.getComputedStyle(element).getPropertyValue(dimension);
37 
			}
38 
		};
39 
 
40 
		var width = this.width = computeDimension(context.canvas,'Width') || context.canvas.width;
41 
		var height = this.height = computeDimension(context.canvas,'Height') || context.canvas.height;
42 
 
43 
		this.aspectRatio = this.width / this.height;
44 
		//High pixel density displays - multiply the size of the canvas height/width by the device pixel ratio, then scale.
45 
		helpers.retinaScale(this);
46 
 
47 
		return this;
48 
	};
49 
	//Globally expose the defaults to allow for user updating/changing
50 
	Chart.defaults = {
51 
		global: {
52 
			// Boolean - Whether to animate the chart
53 
			animation: true,
54 
 
55 
			// Number - Number of animation steps
56 
			animationSteps: 60,
57 
 
58 
			// String - Animation easing effect
59 
			animationEasing: "easeOutQuart",
60 
 
61 
			// Boolean - If we should show the scale at all
62 
			showScale: true,
63 
 
64 
			// Boolean - If we want to override with a hard coded scale
65 
			scaleOverride: false,
66 
 
67 
			// ** Required if scaleOverride is true **
68 
			// Number - The number of steps in a hard coded scale
69 
			scaleSteps: null,
70 
			// Number - The value jump in the hard coded scale
71 
			scaleStepWidth: null,
72 
			// Number - The scale starting value
73 
			scaleStartValue: null,
74 
 
75 
			// String - Colour of the scale line
76 
			scaleLineColor: "rgba(0,0,0,.1)",
77 
 
78 
			// Number - Pixel width of the scale line
79 
			scaleLineWidth: 1,
80 
 
81 
			// Boolean - Whether to show labels on the scale
82 
			scaleShowLabels: true,
83 
 
84 
			// Interpolated JS string - can access value
85 
			scaleLabel: "<%=value%>",
86 
 
87 
			// Boolean - Whether the scale should stick to integers, and not show any floats even if drawing space is there
88 
			scaleIntegersOnly: true,
89 
 
90 
			// Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value
91 
			scaleBeginAtZero: false,
92 
 
93 
			// String - Scale label font declaration for the scale label
94 
			scaleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
95 
 
96 
			// Number - Scale label font size in pixels
97 
			scaleFontSize: 12,
98 
 
99 
			// String - Scale label font weight style
100 
			scaleFontStyle: "normal",
101 
 
102 
			// String - Scale label font colour
103 
			scaleFontColor: "#666",
104 
 
105 
			// Boolean - whether or not the chart should be responsive and resize when the browser does.
106 
			responsive: false,
107 
 
108 
			// Boolean - whether to maintain the starting aspect ratio or not when responsive, if set to false, will take up entire container
109 
			maintainAspectRatio: true,
110 
 
111 
			// Boolean - Determines whether to draw tooltips on the canvas or not - attaches events to touchmove & mousemove
112 
			showTooltips: true,
113 
 
114 
			// Boolean - Determines whether to draw built-in tooltip or call custom tooltip function
115 
			customTooltips: false,
116 
 
117 
			// Array - Array of string names to attach tooltip events
118 
			tooltipEvents: ["mousemove", "touchstart", "touchmove", "mouseout"],
119 
 
120 
			// String - Tooltip background colour
121 
			tooltipFillColor: "rgba(0,0,0,0.8)",
122 
 
123 
			// String - Tooltip label font declaration for the scale label
124 
			tooltipFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
125 
 
126 
			// Number - Tooltip label font size in pixels
127 
			tooltipFontSize: 14,
128 
 
129 
			// String - Tooltip font weight style
130 
			tooltipFontStyle: "normal",
131 
 
132 
			// String - Tooltip label font colour
133 
			tooltipFontColor: "#fff",
134 
 
135 
			// String - Tooltip title font declaration for the scale label
136 
			tooltipTitleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
137 
 
138 
			// Number - Tooltip title font size in pixels
139 
			tooltipTitleFontSize: 14,
140 
 
141 
			// String - Tooltip title font weight style
142 
			tooltipTitleFontStyle: "bold",
143 
 
144 
			// String - Tooltip title font colour
145 
			tooltipTitleFontColor: "#fff",
146 
 
147 
			// String - Tooltip title template
148 
			tooltipTitleTemplate: "<%= label%>",
149 
 
150 
			// Number - pixel width of padding around tooltip text
151 
			tooltipYPadding: 6,
152 
 
153 
			// Number - pixel width of padding around tooltip text
154 
			tooltipXPadding: 6,
155 
 
156 
			// Number - Size of the caret on the tooltip
157 
			tooltipCaretSize: 8,
158 
 
159 
			// Number - Pixel radius of the tooltip border
160 
			tooltipCornerRadius: 6,
161 
 
162 
			// Number - Pixel offset from point x to tooltip edge
163 
			tooltipXOffset: 10,
164 
 
165 
			// String - Template string for single tooltips
166 
			tooltipTemplate: "<%if (label){%><%=label%>: <%}%><%= value %>",
167 
 
168 
			// String - Template string for single tooltips
169 
			multiTooltipTemplate: "<%= datasetLabel %>: <%= value %>",
170 
 
171 
			// String - Colour behind the legend colour block
172 
			multiTooltipKeyBackground: '#fff',
173 
 
174 
			// Array - A list of colors to use as the defaults
175 
			segmentColorDefault: ["#A6CEE3", "#1F78B4", "#B2DF8A", "#33A02C", "#FB9A99", "#E31A1C", "#FDBF6F", "#FF7F00", "#CAB2D6", "#6A3D9A", "#B4B482", "#B15928" ],
176 
 
177 
			// Array - A list of highlight colors to use as the defaults
178 
			segmentHighlightColorDefaults: [ "#CEF6FF", "#47A0DC", "#DAFFB2", "#5BC854", "#FFC2C1", "#FF4244", "#FFE797", "#FFA728", "#F2DAFE", "#9265C2", "#DCDCAA", "#D98150" ],
179 
 
180 
			// Function - Will fire on animation progression.
181 
			onAnimationProgress: function(){},
182 
 
183 
			// Function - Will fire on animation completion.
184 
			onAnimationComplete: function(){}
185 
 
186 
		}
187 
	};
188 
 
189 
	//Create a dictionary of chart types, to allow for extension of existing types
190 
	Chart.types = {};
191 
 
192 
	//Global Chart helpers object for utility methods and classes
193 
	var helpers = Chart.helpers = {};
194 
 
195 
		//-- Basic js utility methods
196 
	var each = helpers.each = function(loopable,callback,self){
197 
			var additionalArgs = Array.prototype.slice.call(arguments, 3);
198 
			// Check to see if null or undefined firstly.
199 
			if (loopable){
200 
				if (loopable.length === +loopable.length){
201 
					var i;
202 
					for (i=0; i<loopable.length; i++){
203 
						callback.apply(self,[loopable[i], i].concat(additionalArgs));
204 
					}
205 
				}
206 
				else{
207 
					for (var item in loopable){
208 
						callback.apply(self,[loopable[item],item].concat(additionalArgs));
209 
					}
210 
				}
211 
			}
212 
		},
213 
		clone = helpers.clone = function(obj){
214 
			var objClone = {};
215 
			each(obj,function(value,key){
216 
				if (obj.hasOwnProperty(key)){
217 
					objClone[key] = value;
218 
				}
219 
			});
220 
			return objClone;
221 
		},
222 
		extend = helpers.extend = function(base){
223 
			each(Array.prototype.slice.call(arguments,1), function(extensionObject) {
224 
				each(extensionObject,function(value,key){
225 
					if (extensionObject.hasOwnProperty(key)){
226 
						base[key] = value;
227 
					}
228 
				});
229 
			});
230 
			return base;
231 
		},
232 
		merge = helpers.merge = function(base,master){
233 
			//Merge properties in left object over to a shallow clone of object right.
234 
			var args = Array.prototype.slice.call(arguments,0);
235 
			args.unshift({});
236 
			return extend.apply(null, args);
237 
		},
238 
		indexOf = helpers.indexOf = function(arrayToSearch, item){
239 
			if (Array.prototype.indexOf) {
240 
				return arrayToSearch.indexOf(item);
241 
			}
242 
			else{
243 
				for (var i = 0; i < arrayToSearch.length; i++) {
244 
					if (arrayToSearch[i] === item) return i;
245 
				}
246 
				return -1;
247 
			}
248 
		},
249 
		where = helpers.where = function(collection, filterCallback){
250 
			var filtered = [];
251 
 
252 
			helpers.each(collection, function(item){
253 
				if (filterCallback(item)){
254 
					filtered.push(item);
255 
				}
256 
			});
257 
 
258 
			return filtered;
259 
		},
260 
		findNextWhere = helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex){
261 
			// Default to start of the array
262 
			if (!startIndex){
263 
				startIndex = -1;
264 
			}
265 
			for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
266 
				var currentItem = arrayToSearch[i];
267 
				if (filterCallback(currentItem)){
268 
					return currentItem;
269 
				}
270 
			}
271 
		},
272 
		findPreviousWhere = helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex){
273 
			// Default to end of the array
274 
			if (!startIndex){
275 
				startIndex = arrayToSearch.length;
276 
			}
277 
			for (var i = startIndex - 1; i >= 0; i--) {
278 
				var currentItem = arrayToSearch[i];
279 
				if (filterCallback(currentItem)){
280 
					return currentItem;
281 
				}
282 
			}
283 
		},
284 
		inherits = helpers.inherits = function(extensions){
285 
			//Basic javascript inheritance based on the model created in Backbone.js
286 
			var parent = this;
287 
			var ChartElement = (extensions && extensions.hasOwnProperty("constructor")) ? extensions.constructor : function(){ return parent.apply(this, arguments); };
288 
 
289 
			var Surrogate = function(){ this.constructor = ChartElement;};
290 
			Surrogate.prototype = parent.prototype;
291 
			ChartElement.prototype = new Surrogate();
292 
 
293 
			ChartElement.extend = inherits;
294 
 
295 
			if (extensions) extend(ChartElement.prototype, extensions);
296 
 
297 
			ChartElement.__super__ = parent.prototype;
298 
 
299 
			return ChartElement;
300 
		},
301 
		noop = helpers.noop = function(){},
302 
		uid = helpers.uid = (function(){
303 
			var id=0;
304 
			return function(){
305 
				return "chart-" + id++;
306 
			};
307 
		})(),
308 
		warn = helpers.warn = function(str){
309 
			//Method for warning of errors
310 
			if (window.console && typeof window.console.warn === "function") console.warn(str);
311 
		},
312 
		amd = helpers.amd = (typeof define === 'function' && define.amd),
313 
		//-- Math methods
314 
		isNumber = helpers.isNumber = function(n){
315 
			return !isNaN(parseFloat(n)) && isFinite(n);
316 
		},
317 
		max = helpers.max = function(array){
318 
			return Math.max.apply( Math, array );
319 
		},
320 
		min = helpers.min = function(array){
321 
			return Math.min.apply( Math, array );
322 
		},
323 
		cap = helpers.cap = function(valueToCap,maxValue,minValue){
324 
			if(isNumber(maxValue)) {
325 
				if( valueToCap > maxValue ) {
326 
					return maxValue;
327 
				}
328 
			}
329 
			else if(isNumber(minValue)){
330 
				if ( valueToCap < minValue ){
331 
					return minValue;
332 
				}
333 
			}
334 
			return valueToCap;
335 
		},
336 
		getDecimalPlaces = helpers.getDecimalPlaces = function(num){
337 
			if (num%1!==0 && isNumber(num)){
338 
				var s = num.toString();
339 
				if(s.indexOf("e-") < 0){
340 
					// no exponent, e.g. 0.01
341 
					return s.split(".")[1].length;
342 
				}
343 
				else if(s.indexOf(".") < 0) {
344 
					// no decimal point, e.g. 1e-9
345 
					return parseInt(s.split("e-")[1]);
346 
				}
347 
				else {
348 
					// exponent and decimal point, e.g. 1.23e-9
349 
					var parts = s.split(".")[1].split("e-");
350 
					return parts[0].length + parseInt(parts[1]);
351 
				}
352 
			}
353 
			else {
354 
				return 0;
355 
			}
356 
		},
357 
		toRadians = helpers.radians = function(degrees){
358 
			return degrees * (Math.PI/180);
359 
		},
360 
		// Gets the angle from vertical upright to the point about a centre.
361 
		getAngleFromPoint = helpers.getAngleFromPoint = function(centrePoint, anglePoint){
362 
			var distanceFromXCenter = anglePoint.x - centrePoint.x,
363 
				distanceFromYCenter = anglePoint.y - centrePoint.y,
364 
				radialDistanceFromCenter = Math.sqrt( distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
365 
 
366 
 
367 
			var angle = Math.PI * 2 + Math.atan2(distanceFromYCenter, distanceFromXCenter);
368 
 
369 
			//If the segment is in the top left quadrant, we need to add another rotation to the angle
370 
			if (distanceFromXCenter < 0 && distanceFromYCenter < 0){
371 
				angle += Math.PI*2;
372 
			}
373 
 
374 
			return {
375 
				angle: angle,
376 
				distance: radialDistanceFromCenter
377 
			};
378 
		},
379 
		aliasPixel = helpers.aliasPixel = function(pixelWidth){
380 
			return (pixelWidth % 2 === 0) ? 0 : 0.5;
381 
		},
382 
		splineCurve = helpers.splineCurve = function(FirstPoint,MiddlePoint,AfterPoint,t){
383 
			//Props to Rob Spencer at scaled innovation for his post on splining between points
384 
			//http://scaledinnovation.com/analytics/splines/aboutSplines.html
385 
			var d01=Math.sqrt(Math.pow(MiddlePoint.x-FirstPoint.x,2)+Math.pow(MiddlePoint.y-FirstPoint.y,2)),
386 
				d12=Math.sqrt(Math.pow(AfterPoint.x-MiddlePoint.x,2)+Math.pow(AfterPoint.y-MiddlePoint.y,2)),
387 
				fa=t*d01/(d01+d12),// scaling factor for triangle Ta
388 
				fb=t*d12/(d01+d12);
389 
			return {
390 
				inner : {
391 
					x : MiddlePoint.x-fa*(AfterPoint.x-FirstPoint.x),
392 
					y : MiddlePoint.y-fa*(AfterPoint.y-FirstPoint.y)
393 
				},
394 
				outer : {
395 
					x: MiddlePoint.x+fb*(AfterPoint.x-FirstPoint.x),
396 
					y : MiddlePoint.y+fb*(AfterPoint.y-FirstPoint.y)
397 
				}
398 
			};
399 
		},
400 
		calculateOrderOfMagnitude = helpers.calculateOrderOfMagnitude = function(val){
401 
			return Math.floor(Math.log(val) / Math.LN10);
402 
		},
403 
		calculateScaleRange = helpers.calculateScaleRange = function(valuesArray, drawingSize, textSize, startFromZero, integersOnly){
404 
 
405 
			//Set a minimum step of two - a point at the top of the graph, and a point at the base
406 
			var minSteps = 2,
407 
				maxSteps = Math.floor(drawingSize/(textSize * 1.5)),
408 
				skipFitting = (minSteps >= maxSteps);
409 
 
410 
			// Filter out null values since these would min() to zero
411 
			var values = [];
412 
			each(valuesArray, function( v ){
413 
				v == null || values.push( v );
414 
			});
415 
			var minValue = min(values),
416 
			    maxValue = max(values);
417 
 
418 
			// We need some degree of separation here to calculate the scales if all the values are the same
419 
			// Adding/minusing 0.5 will give us a range of 1.
420 
			if (maxValue === minValue){
421 
				maxValue += 0.5;
422 
				// So we don't end up with a graph with a negative start value if we've said always start from zero
423 
				if (minValue >= 0.5 && !startFromZero){
424 
					minValue -= 0.5;
425 
				}
426 
				else{
427 
					// Make up a whole number above the values
428 
					maxValue += 0.5;
429 
				}
430 
			}
431 
 
432 
			var	valueRange = Math.abs(maxValue - minValue),
433 
				rangeOrderOfMagnitude = calculateOrderOfMagnitude(valueRange),
434 
				graphMax = Math.ceil(maxValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude),
435 
				graphMin = (startFromZero) ? 0 : Math.floor(minValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude),
436 
				graphRange = graphMax - graphMin,
437 
				stepValue = Math.pow(10, rangeOrderOfMagnitude),
438 
				numberOfSteps = Math.round(graphRange / stepValue);
439 
 
440 
			//If we have more space on the graph we'll use it to give more definition to the data
441 
			while((numberOfSteps > maxSteps || (numberOfSteps * 2) < maxSteps) && !skipFitting) {
442 
				if(numberOfSteps > maxSteps){
443 
					stepValue *=2;
444 
					numberOfSteps = Math.round(graphRange/stepValue);
445 
					// Don't ever deal with a decimal number of steps - cancel fitting and just use the minimum number of steps.
446 
					if (numberOfSteps % 1 !== 0){
447 
						skipFitting = true;
448 
					}
449 
				}
450 
				//We can fit in double the amount of scale points on the scale
451 
				else{
452 
					//If user has declared ints only, and the step value isn't a decimal
453 
					if (integersOnly && rangeOrderOfMagnitude >= 0){
454 
						//If the user has said integers only, we need to check that making the scale more granular wouldn't make it a float
455 
						if(stepValue/2 % 1 === 0){
456 
							stepValue /=2;
457 
							numberOfSteps = Math.round(graphRange/stepValue);
458 
						}
459 
						//If it would make it a float break out of the loop
460 
						else{
461 
							break;
462 
						}
463 
					}
464 
					//If the scale doesn't have to be an int, make the scale more granular anyway.
465 
					else{
466 
						stepValue /=2;
467 
						numberOfSteps = Math.round(graphRange/stepValue);
468 
					}
469 
 
470 
				}
471 
			}
472 
 
473 
			if (skipFitting){
474 
				numberOfSteps = minSteps;
475 
				stepValue = graphRange / numberOfSteps;
476 
			}
477 
 
478 
			return {
479 
				steps : numberOfSteps,
480 
				stepValue : stepValue,
481 
				min : graphMin,
482 
				max	: graphMin + (numberOfSteps * stepValue)
483 
			};
484 
 
485 
		},
486 
		/* jshint ignore:start */
487 
		// Blows up jshint errors based on the new Function constructor
488 
		//Templating methods
489 
		//Javascript micro templating by John Resig - source at http://ejohn.org/blog/javascript-micro-templating/
490 
		template = helpers.template = function(templateString, valuesObject){
491 
 
492 
			// If templateString is function rather than string-template - call the function for valuesObject
493 
 
494 
			if(templateString instanceof Function){
495 
			 	return templateString(valuesObject);
496 
		 	}
497 
 
498 
			var cache = {};
499 
			function tmpl(str, data){
500 
				// Figure out if we're getting a template, or if we need to
501 
				// load the template - and be sure to cache the result.
502 
				var fn = !/\W/.test(str) ?
503 
				cache[str] = cache[str] :
504 
 
505 
				// Generate a reusable function that will serve as a template
506 
				// generator (and which will be cached).
507 
				new Function("obj",
508 
					"var p=[],print=function(){p.push.apply(p,arguments);};" +
509 
 
510 
					// Introduce the data as local variables using with(){}
511 
					"with(obj){p.push('" +
512 
 
513 
					// Convert the template into pure JavaScript
514 
					str
515 
						.replace(/[\r\t\n]/g, " ")
516 
						.split("<%").join("\t")
517 
						.replace(/((^|%>)[^\t]*)'/g, "$1\r")
518 
						.replace(/\t=(.*?)%>/g, "',$1,'")
519 
						.split("\t").join("');")
520 
						.split("%>").join("p.push('")
521 
						.split("\r").join("\\'") +
522 
					"');}return p.join('');"
523 
				);
524 
 
525 
				// Provide some basic currying to the user
526 
				return data ? fn( data ) : fn;
527 
			}
528 
			return tmpl(templateString,valuesObject);
529 
		},
530 
		/* jshint ignore:end */
531 
		generateLabels = helpers.generateLabels = function(templateString,numberOfSteps,graphMin,stepValue){
532 
			var labelsArray = new Array(numberOfSteps);
533 
			if (templateString){
534 
				each(labelsArray,function(val,index){
535 
					labelsArray[index] = template(templateString,{value: (graphMin + (stepValue*(index+1)))});
536 
				});
537 
			}
538 
			return labelsArray;
539 
		},
540 
		//--Animation methods
541 
		//Easing functions adapted from Robert Penner's easing equations
542 
		//http://www.robertpenner.com/easing/
543 
		easingEffects = helpers.easingEffects = {
544 
			linear: function (t) {
545 
				return t;
546 
			},
547 
			easeInQuad: function (t) {
548 
				return t * t;
549 
			},
550 
			easeOutQuad: function (t) {
551 
				return -1 * t * (t - 2);
552 
			},
553 
			easeInOutQuad: function (t) {
554 
				if ((t /= 1 / 2) < 1){
555 
					return 1 / 2 * t * t;
556 
				}
557 
				return -1 / 2 * ((--t) * (t - 2) - 1);
558 
			},
559 
			easeInCubic: function (t) {
560 
				return t * t * t;
561 
			},
562 
			easeOutCubic: function (t) {
563 
				return 1 * ((t = t / 1 - 1) * t * t + 1);
564 
			},
565 
			easeInOutCubic: function (t) {
566 
				if ((t /= 1 / 2) < 1){
567 
					return 1 / 2 * t * t * t;
568 
				}
569 
				return 1 / 2 * ((t -= 2) * t * t + 2);
570 
			},
571 
			easeInQuart: function (t) {
572 
				return t * t * t * t;
573 
			},
574 
			easeOutQuart: function (t) {
575 
				return -1 * ((t = t / 1 - 1) * t * t * t - 1);
576 
			},
577 
			easeInOutQuart: function (t) {
578 
				if ((t /= 1 / 2) < 1){
579 
					return 1 / 2 * t * t * t * t;
580 
				}
581 
				return -1 / 2 * ((t -= 2) * t * t * t - 2);
582 
			},
583 
			easeInQuint: function (t) {
584 
				return 1 * (t /= 1) * t * t * t * t;
585 
			},
586 
			easeOutQuint: function (t) {
587 
				return 1 * ((t = t / 1 - 1) * t * t * t * t + 1);
588 
			},
589 
			easeInOutQuint: function (t) {
590 
				if ((t /= 1 / 2) < 1){
591 
					return 1 / 2 * t * t * t * t * t;
592 
				}
593 
				return 1 / 2 * ((t -= 2) * t * t * t * t + 2);
594 
			},
595 
			easeInSine: function (t) {
596 
				return -1 * Math.cos(t / 1 * (Math.PI / 2)) + 1;
597 
			},
598 
			easeOutSine: function (t) {
599 
				return 1 * Math.sin(t / 1 * (Math.PI / 2));
600 
			},
601 
			easeInOutSine: function (t) {
602 
				return -1 / 2 * (Math.cos(Math.PI * t / 1) - 1);
603 
			},
604 
			easeInExpo: function (t) {
605 
				return (t === 0) ? 1 : 1 * Math.pow(2, 10 * (t / 1 - 1));
606 
			},
607 
			easeOutExpo: function (t) {
608 
				return (t === 1) ? 1 : 1 * (-Math.pow(2, -10 * t / 1) + 1);
609 
			},
610 
			easeInOutExpo: function (t) {
611 
				if (t === 0){
612 
					return 0;
613 
				}
614 
				if (t === 1){
615 
					return 1;
616 
				}
617 
				if ((t /= 1 / 2) < 1){
618 
					return 1 / 2 * Math.pow(2, 10 * (t - 1));
619 
				}
620 
				return 1 / 2 * (-Math.pow(2, -10 * --t) + 2);
621 
			},
622 
			easeInCirc: function (t) {
623 
				if (t >= 1){
624 
					return t;
625 
				}
626 
				return -1 * (Math.sqrt(1 - (t /= 1) * t) - 1);
627 
			},
628 
			easeOutCirc: function (t) {
629 
				return 1 * Math.sqrt(1 - (t = t / 1 - 1) * t);
630 
			},
631 
			easeInOutCirc: function (t) {
632 
				if ((t /= 1 / 2) < 1){
633 
					return -1 / 2 * (Math.sqrt(1 - t * t) - 1);
634 
				}
635 
				return 1 / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1);
636 
			},
637 
			easeInElastic: function (t) {
638 
				var s = 1.70158;
639 
				var p = 0;
640 
				var a = 1;
641 
				if (t === 0){
642 
					return 0;
643 
				}
644 
				if ((t /= 1) == 1){
645 
					return 1;
646 
				}
647 
				if (!p){
648 
					p = 1 * 0.3;
649 
				}
650 
				if (a < Math.abs(1)) {
651 
					a = 1;
652 
					s = p / 4;
653 
				} else{
654 
					s = p / (2 * Math.PI) * Math.asin(1 / a);
655 
				}
656 
				return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));
657 
			},
658 
			easeOutElastic: function (t) {
659 
				var s = 1.70158;
660 
				var p = 0;
661 
				var a = 1;
662 
				if (t === 0){
663 
					return 0;
664 
				}
665 
				if ((t /= 1) == 1){
666 
					return 1;
667 
				}
668 
				if (!p){
669 
					p = 1 * 0.3;
670 
				}
671 
				if (a < Math.abs(1)) {
672 
					a = 1;
673 
					s = p / 4;
674 
				} else{
675 
					s = p / (2 * Math.PI) * Math.asin(1 / a);
676 
				}
677 
				return a * Math.pow(2, -10 * t) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) + 1;
678 
			},
679 
			easeInOutElastic: function (t) {
680 
				var s = 1.70158;
681 
				var p = 0;
682 
				var a = 1;
683 
				if (t === 0){
684 
					return 0;
685 
				}
686 
				if ((t /= 1 / 2) == 2){
687 
					return 1;
688 
				}
689 
				if (!p){
690 
					p = 1 * (0.3 * 1.5);
691 
				}
692 
				if (a < Math.abs(1)) {
693 
					a = 1;
694 
					s = p / 4;
695 
				} else {
696 
					s = p / (2 * Math.PI) * Math.asin(1 / a);
697 
				}
698 
				if (t < 1){
699 
					return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));}
700 
				return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) * 0.5 + 1;
701 
			},
702 
			easeInBack: function (t) {
703 
				var s = 1.70158;
704 
				return 1 * (t /= 1) * t * ((s + 1) * t - s);
705 
			},
706 
			easeOutBack: function (t) {
707 
				var s = 1.70158;
708 
				return 1 * ((t = t / 1 - 1) * t * ((s + 1) * t + s) + 1);
709 
			},
710 
			easeInOutBack: function (t) {
711 
				var s = 1.70158;
712 
				if ((t /= 1 / 2) < 1){
713 
					return 1 / 2 * (t * t * (((s *= (1.525)) + 1) * t - s));
714 
				}
715 
				return 1 / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
716 
			},
717 
			easeInBounce: function (t) {
718 
				return 1 - easingEffects.easeOutBounce(1 - t);
719 
			},
720 
			easeOutBounce: function (t) {
721 
				if ((t /= 1) < (1 / 2.75)) {
722 
					return 1 * (7.5625 * t * t);
723 
				} else if (t < (2 / 2.75)) {
724 
					return 1 * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75);
725 
				} else if (t < (2.5 / 2.75)) {
726 
					return 1 * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375);
727 
				} else {
728 
					return 1 * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375);
729 
				}
730 
			},
731 
			easeInOutBounce: function (t) {
732 
				if (t < 1 / 2){
733 
					return easingEffects.easeInBounce(t * 2) * 0.5;
734 
				}
735 
				return easingEffects.easeOutBounce(t * 2 - 1) * 0.5 + 1 * 0.5;
736 
			}
737 
		},
738 
		//Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
739 
		requestAnimFrame = helpers.requestAnimFrame = (function(){
740 
			return window.requestAnimationFrame ||
741 
				window.webkitRequestAnimationFrame ||
742 
				window.mozRequestAnimationFrame ||
743 
				window.oRequestAnimationFrame ||
744 
				window.msRequestAnimationFrame ||
745 
				function(callback) {
746 
					return window.setTimeout(callback, 1000 / 60);
747 
				};
748 
		})(),
749 
		cancelAnimFrame = helpers.cancelAnimFrame = (function(){
750 
			return window.cancelAnimationFrame ||
751 
				window.webkitCancelAnimationFrame ||
752 
				window.mozCancelAnimationFrame ||
753 
				window.oCancelAnimationFrame ||
754 
				window.msCancelAnimationFrame ||
755 
				function(callback) {
756 
					return window.clearTimeout(callback, 1000 / 60);
757 
				};
758 
		})(),
759 
		animationLoop = helpers.animationLoop = function(callback,totalSteps,easingString,onProgress,onComplete,chartInstance){
760 
 
761 
			var currentStep = 0,
762 
				easingFunction = easingEffects[easingString] || easingEffects.linear;
763 
 
764 
			var animationFrame = function(){
765 
				currentStep++;
766 
				var stepDecimal = currentStep/totalSteps;
767 
				var easeDecimal = easingFunction(stepDecimal);
768 
 
769 
				callback.call(chartInstance,easeDecimal,stepDecimal, currentStep);
770 
				onProgress.call(chartInstance,easeDecimal,stepDecimal);
771 
				if (currentStep < totalSteps){
772 
					chartInstance.animationFrame = requestAnimFrame(animationFrame);
773 
				} else{
774 
					onComplete.apply(chartInstance);
775 
				}
776 
			};
777 
			requestAnimFrame(animationFrame);
778 
		},
779 
		//-- DOM methods
780 
		getRelativePosition = helpers.getRelativePosition = function(evt){
781 
			var mouseX, mouseY;
782 
			var e = evt.originalEvent || evt,
783 
				canvas = evt.currentTarget || evt.srcElement,
784 
				boundingRect = canvas.getBoundingClientRect();
785 
 
786 
			if (e.touches){
787 
				mouseX = e.touches[0].clientX - boundingRect.left;
788 
				mouseY = e.touches[0].clientY - boundingRect.top;
789 
 
790 
			}
791 
			else{
792 
				mouseX = e.clientX - boundingRect.left;
793 
				mouseY = e.clientY - boundingRect.top;
794 
			}
795 
 
796 
			return {
797 
				x : mouseX,
798 
				y : mouseY
799 
			};
800 
 
801 
		},
802 
		addEvent = helpers.addEvent = function(node,eventType,method){
803 
			if (node.addEventListener){
804 
				node.addEventListener(eventType,method);
805 
			} else if (node.attachEvent){
806 
				node.attachEvent("on"+eventType, method);
807 
			} else {
808 
				node["on"+eventType] = method;
809 
			}
810 
		},
811 
		removeEvent = helpers.removeEvent = function(node, eventType, handler){
812 
			if (node.removeEventListener){
813 
				node.removeEventListener(eventType, handler, false);
814 
			} else if (node.detachEvent){
815 
				node.detachEvent("on"+eventType,handler);
816 
			} else{
817 
				node["on" + eventType] = noop;
818 
			}
819 
		},
820 
		bindEvents = helpers.bindEvents = function(chartInstance, arrayOfEvents, handler){
821 
			// Create the events object if it's not already present
822 
			if (!chartInstance.events) chartInstance.events = {};
823 
 
824 
			each(arrayOfEvents,function(eventName){
825 
				chartInstance.events[eventName] = function(){
826 
					handler.apply(chartInstance, arguments);
827 
				};
828 
				addEvent(chartInstance.chart.canvas,eventName,chartInstance.events[eventName]);
829 
			});
830 
		},
831 
		unbindEvents = helpers.unbindEvents = function (chartInstance, arrayOfEvents) {
832 
			each(arrayOfEvents, function(handler,eventName){
833 
				removeEvent(chartInstance.chart.canvas, eventName, handler);
834 
			});
835 
		},
836 
		getMaximumWidth = helpers.getMaximumWidth = function(domNode){
837 
			var container = domNode.parentNode,
838 
			    padding = parseInt(getStyle(container, 'padding-left')) + parseInt(getStyle(container, 'padding-right'));
839 
			// TODO = check cross browser stuff with this.
840 
			return container ? container.clientWidth - padding : 0;
841 
		},
842 
		getMaximumHeight = helpers.getMaximumHeight = function(domNode){
843 
			var container = domNode.parentNode,
844 
			    padding = parseInt(getStyle(container, 'padding-bottom')) + parseInt(getStyle(container, 'padding-top'));
845 
			// TODO = check cross browser stuff with this.
846 
			return container ? container.clientHeight - padding : 0;
847 
		},
848 
		getStyle = helpers.getStyle = function (el, property) {
849 
			return el.currentStyle ?
850 
				el.currentStyle[property] :
851 
				document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
852 
		},
853 
		getMaximumSize = helpers.getMaximumSize = helpers.getMaximumWidth, // legacy support
854 
		retinaScale = helpers.retinaScale = function(chart){
855 
			var ctx = chart.ctx,
856 
				width = chart.canvas.width,
857 
				height = chart.canvas.height;
858 
 
859 
			if (window.devicePixelRatio) {
860 
				ctx.canvas.style.width = width + "px";
861 
				ctx.canvas.style.height = height + "px";
862 
				ctx.canvas.height = height * window.devicePixelRatio;
863 
				ctx.canvas.width = width * window.devicePixelRatio;
864 
				ctx.scale(window.devicePixelRatio, window.devicePixelRatio);
865 
			}
866 
		},
867 
		//-- Canvas methods
868 
		clear = helpers.clear = function(chart){
869 
			chart.ctx.clearRect(0,0,chart.width,chart.height);
870 
		},
871 
		fontString = helpers.fontString = function(pixelSize,fontStyle,fontFamily){
872 
			return fontStyle + " " + pixelSize+"px " + fontFamily;
873 
		},
874 
		longestText = helpers.longestText = function(ctx,font,arrayOfStrings){
875 
			ctx.font = font;
876 
			var longest = 0;
877 
			each(arrayOfStrings,function(string){
878 
				var textWidth = ctx.measureText(string).width;
879 
				longest = (textWidth > longest) ? textWidth : longest;
880 
			});
881 
			return longest;
882 
		},
883 
		drawRoundedRectangle = helpers.drawRoundedRectangle = function(ctx,x,y,width,height,radius){
884 
			ctx.beginPath();
885 
			ctx.moveTo(x + radius, y);
886 
			ctx.lineTo(x + width - radius, y);
887 
			ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
888 
			ctx.lineTo(x + width, y + height - radius);
889 
			ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
890 
			ctx.lineTo(x + radius, y + height);
891 
			ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
892 
			ctx.lineTo(x, y + radius);
893 
			ctx.quadraticCurveTo(x, y, x + radius, y);
894 
			ctx.closePath();
895 
		};
896 
 
897 
 
898 
	//Store a reference to each instance - allowing us to globally resize chart instances on window resize.
899 
	//Destroy method on the chart will remove the instance of the chart from this reference.
900 
	Chart.instances = {};
901 
 
902 
	Chart.Type = function(data,options,chart){
903 
		this.options = options;
904 
		this.chart = chart;
905 
		this.id = uid();
906 
		//Add the chart instance to the global namespace
907 
		Chart.instances[this.id] = this;
908 
 
909 
		// Initialize is always called when a chart type is created
910 
		// By default it is a no op, but it should be extended
911 
		if (options.responsive){
912 
			this.resize();
913 
		}
914 
		this.initialize.call(this,data);
915 
	};
916 
 
917 
	//Core methods that'll be a part of every chart type
918 
	extend(Chart.Type.prototype,{
919 
		initialize : function(){return this;},
920 
		clear : function(){
921 
			clear(this.chart);
922 
			return this;
923 
		},
924 
		stop : function(){
925 
			// Stops any current animation loop occuring
926 
			Chart.animationService.cancelAnimation(this);
927 
			return this;
928 
		},
929 
		resize : function(callback){
930 
			this.stop();
931 
			var canvas = this.chart.canvas,
932 
				newWidth = getMaximumWidth(this.chart.canvas),
933 
				newHeight = this.options.maintainAspectRatio ? newWidth / this.chart.aspectRatio : getMaximumHeight(this.chart.canvas);
934 
 
935 
			canvas.width = this.chart.width = newWidth;
936 
			canvas.height = this.chart.height = newHeight;
937 
 
938 
			retinaScale(this.chart);
939 
 
940 
			if (typeof callback === "function"){
941 
				callback.apply(this, Array.prototype.slice.call(arguments, 1));
942 
			}
943 
			return this;
944 
		},
945 
		reflow : noop,
946 
		render : function(reflow){
947 
			if (reflow){
948 
				this.reflow();
949 
			}
950 
 
951 
			if (this.options.animation && !reflow){
952 
				var animation = new Chart.Animation();
953 
				animation.numSteps = this.options.animationSteps;
954 
				animation.easing = this.options.animationEasing;
955 
 
956 
				// render function
957 
				animation.render = function(chartInstance, animationObject) {
958 
					var easingFunction = helpers.easingEffects[animationObject.easing];
959 
					var stepDecimal = animationObject.currentStep / animationObject.numSteps;
960 
					var easeDecimal = easingFunction(stepDecimal);
961 
 
962 
					chartInstance.draw(easeDecimal, stepDecimal, animationObject.currentStep);
963 
				};
964 
 
965 
				// user events
966 
				animation.onAnimationProgress = this.options.onAnimationProgress;
967 
				animation.onAnimationComplete = this.options.onAnimationComplete;
968 
 
969 
				Chart.animationService.addAnimation(this, animation);
970 
			}
971 
			else{
972 
				this.draw();
973 
				this.options.onAnimationComplete.call(this);
974 
			}
975 
			return this;
976 
		},
977 
		generateLegend : function(){
978 
			return helpers.template(this.options.legendTemplate, this);
979 
		},
980 
		destroy : function(){
981 
			this.stop();
982 
			this.clear();
983 
			unbindEvents(this, this.events);
984 
			var canvas = this.chart.canvas;
985 
 
986 
			// Reset canvas height/width attributes starts a fresh with the canvas context
987 
			canvas.width = this.chart.width;
988 
			canvas.height = this.chart.height;
989 
 
990 
			// < IE9 doesn't support removeProperty
991 
			if (canvas.style.removeProperty) {
992 
				canvas.style.removeProperty('width');
993 
				canvas.style.removeProperty('height');
994 
			} else {
995 
				canvas.style.removeAttribute('width');
996 
				canvas.style.removeAttribute('height');
997 
			}
998 
 
999 
			delete Chart.instances[this.id];
1000 
		},
1001 
		showTooltip : function(ChartElements, forceRedraw){
1002 
			// Only redraw the chart if we've actually changed what we're hovering on.
1003 
			if (typeof this.activeElements === 'undefined') this.activeElements = [];
1004 
 
1005 
			var isChanged = (function(Elements){
1006 
				var changed = false;
1007 
 
1008 
				if (Elements.length !== this.activeElements.length){
1009 
					changed = true;
1010 
					return changed;
1011 
				}
1012 
 
1013 
				each(Elements, function(element, index){
1014 
					if (element !== this.activeElements[index]){
1015 
						changed = true;
1016 
					}
1017 
				}, this);
1018 
				return changed;
1019 
			}).call(this, ChartElements);
1020 
 
1021 
			if (!isChanged && !forceRedraw){
1022 
				return;
1023 
			}
1024 
			else{
1025 
				this.activeElements = ChartElements;
1026 
			}
1027 
			this.draw();
1028 
			if(this.options.customTooltips){
1029 
				this.options.customTooltips(false);
1030 
			}
1031 
			if (ChartElements.length > 0){
1032 
				// If we have multiple datasets, show a MultiTooltip for all of the data points at that index
1033 
				if (this.datasets && this.datasets.length > 1) {
1034 
					var dataArray,
1035 
						dataIndex;
1036 
 
1037 
					for (var i = this.datasets.length - 1; i >= 0; i--) {
1038 
						dataArray = this.datasets[i].points || this.datasets[i].bars || this.datasets[i].segments;
1039 
						dataIndex = indexOf(dataArray, ChartElements[0]);
1040 
						if (dataIndex !== -1){
1041 
							break;
1042 
						}
1043 
					}
1044 
					var tooltipLabels = [],
1045 
						tooltipColors = [],
1046 
						medianPosition = (function(index) {
1047 
 
1048 
							// Get all the points at that particular index
1049 
							var Elements = [],
1050 
								dataCollection,
1051 
								xPositions = [],
1052 
								yPositions = [],
1053 
								xMax,
1054 
								yMax,
1055 
								xMin,
1056 
								yMin;
1057 
							helpers.each(this.datasets, function(dataset){
1058 
								dataCollection = dataset.points || dataset.bars || dataset.segments;
1059 
								if (dataCollection[dataIndex] && dataCollection[dataIndex].hasValue()){
1060 
									Elements.push(dataCollection[dataIndex]);
1061 
								}
1062 
							});
1063 
 
1064 
							helpers.each(Elements, function(element) {
1065 
								xPositions.push(element.x);
1066 
								yPositions.push(element.y);
1067 
 
1068 
 
1069 
								//Include any colour information about the element
1070 
								tooltipLabels.push(helpers.template(this.options.multiTooltipTemplate, element));
1071 
								tooltipColors.push({
1072 
									fill: element._saved.fillColor || element.fillColor,
1073 
									stroke: element._saved.strokeColor || element.strokeColor
1074 
								});
1075 
 
1076 
							}, this);
1077 
 
1078 
							yMin = min(yPositions);
1079 
							yMax = max(yPositions);
1080 
 
1081 
							xMin = min(xPositions);
1082 
							xMax = max(xPositions);
1083 
 
1084 
							return {
1085 
								x: (xMin > this.chart.width/2) ? xMin : xMax,
1086 
								y: (yMin + yMax)/2
1087 
							};
1088 
						}).call(this, dataIndex);
1089 
 
1090 
					new Chart.MultiTooltip({
1091 
						x: medianPosition.x,
1092 
						y: medianPosition.y,
1093 
						xPadding: this.options.tooltipXPadding,
1094 
						yPadding: this.options.tooltipYPadding,
1095 
						xOffset: this.options.tooltipXOffset,
1096 
						fillColor: this.options.tooltipFillColor,
1097 
						textColor: this.options.tooltipFontColor,
1098 
						fontFamily: this.options.tooltipFontFamily,
1099 
						fontStyle: this.options.tooltipFontStyle,
1100 
						fontSize: this.options.tooltipFontSize,
1101 
						titleTextColor: this.options.tooltipTitleFontColor,
1102 
						titleFontFamily: this.options.tooltipTitleFontFamily,
1103 
						titleFontStyle: this.options.tooltipTitleFontStyle,
1104 
						titleFontSize: this.options.tooltipTitleFontSize,
1105 
						cornerRadius: this.options.tooltipCornerRadius,
1106 
						labels: tooltipLabels,
1107 
						legendColors: tooltipColors,
1108 
						legendColorBackground : this.options.multiTooltipKeyBackground,
1109 
						title: template(this.options.tooltipTitleTemplate,ChartElements[0]),
1110 
						chart: this.chart,
1111 
						ctx: this.chart.ctx,
1112 
						custom: this.options.customTooltips
1113 
					}).draw();
1114 
 
1115 
				} else {
1116 
					each(ChartElements, function(Element) {
1117 
						var tooltipPosition = Element.tooltipPosition();
1118 
						new Chart.Tooltip({
1119 
							x: Math.round(tooltipPosition.x),
1120 
							y: Math.round(tooltipPosition.y),
1121 
							xPadding: this.options.tooltipXPadding,
1122 
							yPadding: this.options.tooltipYPadding,
1123 
							fillColor: this.options.tooltipFillColor,
1124 
							textColor: this.options.tooltipFontColor,
1125 
							fontFamily: this.options.tooltipFontFamily,
1126 
							fontStyle: this.options.tooltipFontStyle,
1127 
							fontSize: this.options.tooltipFontSize,
1128 
							caretHeight: this.options.tooltipCaretSize,
1129 
							cornerRadius: this.options.tooltipCornerRadius,
1130 
							text: template(this.options.tooltipTemplate, Element),
1131 
							chart: this.chart,
1132 
							custom: this.options.customTooltips
1133 
						}).draw();
1134 
					}, this);
1135 
				}
1136 
			}
1137 
			return this;
1138 
		},
1139 
		toBase64Image : function(){
1140 
			return this.chart.canvas.toDataURL.apply(this.chart.canvas, arguments);
1141 
		}
1142 
	});
1143 
 
1144 
	Chart.Type.extend = function(extensions){
1145 
 
1146 
		var parent = this;
1147 
 
1148 
		var ChartType = function(){
1149 
			return parent.apply(this,arguments);
1150 
		};
1151 
 
1152 
		//Copy the prototype object of the this class
1153 
		ChartType.prototype = clone(parent.prototype);
1154 
		//Now overwrite some of the properties in the base class with the new extensions
1155 
		extend(ChartType.prototype, extensions);
1156 
 
1157 
		ChartType.extend = Chart.Type.extend;
1158 
 
1159 
		if (extensions.name || parent.prototype.name){
1160 
 
1161 
			var chartName = extensions.name || parent.prototype.name;
1162 
			//Assign any potential default values of the new chart type
1163 
 
1164 
			//If none are defined, we'll use a clone of the chart type this is being extended from.
1165 
			//I.e. if we extend a line chart, we'll use the defaults from the line chart if our new chart
1166 
			//doesn't define some defaults of their own.
1167 
 
1168 
			var baseDefaults = (Chart.defaults[parent.prototype.name]) ? clone(Chart.defaults[parent.prototype.name]) : {};
1169 
 
1170 
			Chart.defaults[chartName] = extend(baseDefaults,extensions.defaults);
1171 
 
1172 
			Chart.types[chartName] = ChartType;
1173 
 
1174 
			//Register this new chart type in the Chart prototype
1175 
			Chart.prototype[chartName] = function(data,options){
1176 
				var config = merge(Chart.defaults.global, Chart.defaults[chartName], options || {});
1177 
				return new ChartType(data,config,this);
1178 
			};
1179 
		} else{
1180 
			warn("Name not provided for this chart, so it hasn't been registered");
1181 
		}
1182 
		return parent;
1183 
	};
1184 
 
1185 
	Chart.Element = function(configuration){
1186 
		extend(this,configuration);
1187 
		this.initialize.apply(this,arguments);
1188 
		this.save();
1189 
	};
1190 
	extend(Chart.Element.prototype,{
1191 
		initialize : function(){},
1192 
		restore : function(props){
1193 
			if (!props){
1194 
				extend(this,this._saved);
1195 
			} else {
1196 
				each(props,function(key){
1197 
					this[key] = this._saved[key];
1198 
				},this);
1199 
			}
1200 
			return this;
1201 
		},
1202 
		save : function(){
1203 
			this._saved = clone(this);
1204 
			delete this._saved._saved;
1205 
			return this;
1206 
		},
1207 
		update : function(newProps){
1208 
			each(newProps,function(value,key){
1209 
				this._saved[key] = this[key];
1210 
				this[key] = value;
1211 
			},this);
1212 
			return this;
1213 
		},
1214 
		transition : function(props,ease){
1215 
			each(props,function(value,key){
1216 
				this[key] = ((value - this._saved[key]) * ease) + this._saved[key];
1217 
			},this);
1218 
			return this;
1219 
		},
1220 
		tooltipPosition : function(){
1221 
			return {
1222 
				x : this.x,
1223 
				y : this.y
1224 
			};
1225 
		},
1226 
		hasValue: function(){
1227 
			return isNumber(this.value);
1228 
		}
1229 
	});
1230 
 
1231 
	Chart.Element.extend = inherits;
1232 
 
1233 
 
1234 
	Chart.Point = Chart.Element.extend({
1235 
		display: true,
1236 
		inRange: function(chartX,chartY){
1237 
			var hitDetectionRange = this.hitDetectionRadius + this.radius;
1238 
			return ((Math.pow(chartX-this.x, 2)+Math.pow(chartY-this.y, 2)) < Math.pow(hitDetectionRange,2));
1239 
		},
1240 
		draw : function(){
1241 
			if (this.display){
1242 
				var ctx = this.ctx;
1243 
				ctx.beginPath();
1244 
 
1245 
				ctx.arc(this.x, this.y, this.radius, 0, Math.PI*2);
1246 
				ctx.closePath();
1247 
 
1248 
				ctx.strokeStyle = this.strokeColor;
1249 
				ctx.lineWidth = this.strokeWidth;
1250 
 
1251 
				ctx.fillStyle = this.fillColor;
1252 
 
1253 
				ctx.fill();
1254 
				ctx.stroke();
1255 
			}
1256 
 
1257 
 
1258 
			//Quick debug for bezier curve splining
1259 
			//Highlights control points and the line between them.
1260 
			//Handy for dev - stripped in the min version.
1261 
 
1262 
			// ctx.save();
1263 
			// ctx.fillStyle = "black";
1264 
			// ctx.strokeStyle = "black"
1265 
			// ctx.beginPath();
1266 
			// ctx.arc(this.controlPoints.inner.x,this.controlPoints.inner.y, 2, 0, Math.PI*2);
1267 
			// ctx.fill();
1268 
 
1269 
			// ctx.beginPath();
1270 
			// ctx.arc(this.controlPoints.outer.x,this.controlPoints.outer.y, 2, 0, Math.PI*2);
1271 
			// ctx.fill();
1272 
 
1273 
			// ctx.moveTo(this.controlPoints.inner.x,this.controlPoints.inner.y);
1274 
			// ctx.lineTo(this.x, this.y);
1275 
			// ctx.lineTo(this.controlPoints.outer.x,this.controlPoints.outer.y);
1276 
			// ctx.stroke();
1277 
 
1278 
			// ctx.restore();
1279 
 
1280 
 
1281 
 
1282 
		}
1283 
	});
1284 
 
1285 
	Chart.Arc = Chart.Element.extend({
1286 
		inRange : function(chartX,chartY){
1287 
 
1288 
			var pointRelativePosition = helpers.getAngleFromPoint(this, {
1289 
				x: chartX,
1290 
				y: chartY
1291 
			});
1292 
 
1293 
			// Normalize all angles to 0 - 2*PI (0 - 360°)
1294 
			var pointRelativeAngle = pointRelativePosition.angle % (Math.PI * 2),
1295 
			    startAngle = (Math.PI * 2 + this.startAngle) % (Math.PI * 2),
1296 
			    endAngle = (Math.PI * 2 + this.endAngle) % (Math.PI * 2) || 360;
1297 
 
1298 
			// Calculate wether the pointRelativeAngle is between the start and the end angle
1299 
			var betweenAngles = (endAngle < startAngle) ?
1300 
				pointRelativeAngle <= endAngle || pointRelativeAngle >= startAngle:
1301 
				pointRelativeAngle >= startAngle && pointRelativeAngle <= endAngle;
1302 
 
1303 
			//Check if within the range of the open/close angle
1304 
			var withinRadius = (pointRelativePosition.distance >= this.innerRadius && pointRelativePosition.distance <= this.outerRadius);
1305 
 
1306 
			return (betweenAngles && withinRadius);
1307 
			//Ensure within the outside of the arc centre, but inside arc outer
1308 
		},
1309 
		tooltipPosition : function(){
1310 
			var centreAngle = this.startAngle + ((this.endAngle - this.startAngle) / 2),
1311 
				rangeFromCentre = (this.outerRadius - this.innerRadius) / 2 + this.innerRadius;
1312 
			return {
1313 
				x : this.x + (Math.cos(centreAngle) * rangeFromCentre),
1314 
				y : this.y + (Math.sin(centreAngle) * rangeFromCentre)
1315 
			};
1316 
		},
1317 
		draw : function(animationPercent){
1318 
 
1319 
			var easingDecimal = animationPercent || 1;
1320 
 
1321 
			var ctx = this.ctx;
1322 
 
1323 
			ctx.beginPath();
1324 
 
1325 
			ctx.arc(this.x, this.y, this.outerRadius < 0 ? 0 : this.outerRadius, this.startAngle, this.endAngle);
1326 
 
1327 
            ctx.arc(this.x, this.y, this.innerRadius < 0 ? 0 : this.innerRadius, this.endAngle, this.startAngle, true);
1328 
 
1329 
			ctx.closePath();
1330 
			ctx.strokeStyle = this.strokeColor;
1331 
			ctx.lineWidth = this.strokeWidth;
1332 
 
1333 
			ctx.fillStyle = this.fillColor;
1334 
 
1335 
			ctx.fill();
1336 
			ctx.lineJoin = 'bevel';
1337 
 
1338 
			if (this.showStroke){
1339 
				ctx.stroke();
1340 
			}
1341 
		}
1342 
	});
1343 
 
1344 
	Chart.Rectangle = Chart.Element.extend({
1345 
		draw : function(){
1346 
			var ctx = this.ctx,
1347 
				halfWidth = this.width/2,
1348 
				leftX = this.x - halfWidth,
1349 
				rightX = this.x + halfWidth,
1350 
				top = this.base - (this.base - this.y),
1351 
				halfStroke = this.strokeWidth / 2;
1352 
 
1353 
			// Canvas doesn't allow us to stroke inside the width so we can
1354 
			// adjust the sizes to fit if we're setting a stroke on the line
1355 
			if (this.showStroke){
1356 
				leftX += halfStroke;
1357 
				rightX -= halfStroke;
1358 
				top += halfStroke;
1359 
			}
1360 
 
1361 
			ctx.beginPath();
1362 
 
1363 
			ctx.fillStyle = this.fillColor;
1364 
			ctx.strokeStyle = this.strokeColor;
1365 
			ctx.lineWidth = this.strokeWidth;
1366 
 
1367 
			// It'd be nice to keep this class totally generic to any rectangle
1368 
			// and simply specify which border to miss out.
1369 
			ctx.moveTo(leftX, this.base);
1370 
			ctx.lineTo(leftX, top);
1371 
			ctx.lineTo(rightX, top);
1372 
			ctx.lineTo(rightX, this.base);
1373 
			ctx.fill();
1374 
			if (this.showStroke){
1375 
				ctx.stroke();
1376 
			}
1377 
		},
1378 
		height : function(){
1379 
			return this.base - this.y;
1380 
		},
1381 
		inRange : function(chartX,chartY){
1382 
			return (chartX >= this.x - this.width/2 && chartX <= this.x + this.width/2) && (chartY >= this.y && chartY <= this.base);
1383 
		}
1384 
	});
1385 
 
1386 
	Chart.Animation = Chart.Element.extend({
1387 
		currentStep: null, // the current animation step
1388 
		numSteps: 60, // default number of steps
1389 
		easing: "", // the easing to use for this animation
1390 
		render: null, // render function used by the animation service
1391 
 
1392 
		onAnimationProgress: null, // user specified callback to fire on each step of the animation
1393 
		onAnimationComplete: null, // user specified callback to fire when the animation finishes
1394 
	});
1395 
 
1396 
	Chart.Tooltip = Chart.Element.extend({
1397 
		draw : function(){
1398 
 
1399 
			var ctx = this.chart.ctx;
1400 
 
1401 
			ctx.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
1402 
 
1403 
			this.xAlign = "center";
1404 
			this.yAlign = "above";
1405 
 
1406 
			//Distance between the actual element.y position and the start of the tooltip caret
1407 
			var caretPadding = this.caretPadding = 2;
1408 
 
1409 
			var tooltipWidth = ctx.measureText(this.text).width + 2*this.xPadding,
1410 
				tooltipRectHeight = this.fontSize + 2*this.yPadding,
1411 
				tooltipHeight = tooltipRectHeight + this.caretHeight + caretPadding;
1412 
 
1413 
			if (this.x + tooltipWidth/2 >this.chart.width){
1414 
				this.xAlign = "left";
1415 
			} else if (this.x - tooltipWidth/2 < 0){
1416 
				this.xAlign = "right";
1417 
			}
1418 
 
1419 
			if (this.y - tooltipHeight < 0){
1420 
				this.yAlign = "below";
1421 
			}
1422 
 
1423 
 
1424 
			var tooltipX = this.x - tooltipWidth/2,
1425 
				tooltipY = this.y - tooltipHeight;
1426 
 
1427 
			ctx.fillStyle = this.fillColor;
1428 
 
1429 
			// Custom Tooltips
1430 
			if(this.custom){
1431 
				this.custom(this);
1432 
			}
1433 
			else{
1434 
				switch(this.yAlign)
1435 
				{
1436 
				case "above":
1437 
					//Draw a caret above the x/y
1438 
					ctx.beginPath();
1439 
					ctx.moveTo(this.x,this.y - caretPadding);
1440 
					ctx.lineTo(this.x + this.caretHeight, this.y - (caretPadding + this.caretHeight));
1441 
					ctx.lineTo(this.x - this.caretHeight, this.y - (caretPadding + this.caretHeight));
1442 
					ctx.closePath();
1443 
					ctx.fill();
1444 
					break;
1445 
				case "below":
1446 
					tooltipY = this.y + caretPadding + this.caretHeight;
1447 
					//Draw a caret below the x/y
1448 
					ctx.beginPath();
1449 
					ctx.moveTo(this.x, this.y + caretPadding);
1450 
					ctx.lineTo(this.x + this.caretHeight, this.y + caretPadding + this.caretHeight);
1451 
					ctx.lineTo(this.x - this.caretHeight, this.y + caretPadding + this.caretHeight);
1452 
					ctx.closePath();
1453 
					ctx.fill();
1454 
					break;
1455 
				}
1456 
 
1457 
				switch(this.xAlign)
1458 
				{
1459 
				case "left":
1460 
					tooltipX = this.x - tooltipWidth + (this.cornerRadius + this.caretHeight);
1461 
					break;
1462 
				case "right":
1463 
					tooltipX = this.x - (this.cornerRadius + this.caretHeight);
1464 
					break;
1465 
				}
1466 
 
1467 
				drawRoundedRectangle(ctx,tooltipX,tooltipY,tooltipWidth,tooltipRectHeight,this.cornerRadius);
1468 
 
1469 
				ctx.fill();
1470 
 
1471 
				ctx.fillStyle = this.textColor;
1472 
				ctx.textAlign = "center";
1473 
				ctx.textBaseline = "middle";
1474 
				ctx.fillText(this.text, tooltipX + tooltipWidth/2, tooltipY + tooltipRectHeight/2);
1475 
			}
1476 
		}
1477 
	});
1478 
 
1479 
	Chart.MultiTooltip = Chart.Element.extend({
1480 
		initialize : function(){
1481 
			this.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
1482 
 
1483 
			this.titleFont = fontString(this.titleFontSize,this.titleFontStyle,this.titleFontFamily);
1484 
 
1485 
			this.titleHeight = this.title ? this.titleFontSize * 1.5 : 0;
1486 
			this.height = (this.labels.length * this.fontSize) + ((this.labels.length-1) * (this.fontSize/2)) + (this.yPadding*2) + this.titleHeight;
1487 
 
1488 
			this.ctx.font = this.titleFont;
1489 
 
1490 
			var titleWidth = this.ctx.measureText(this.title).width,
1491 
				//Label has a legend square as well so account for this.
1492 
				labelWidth = longestText(this.ctx,this.font,this.labels) + this.fontSize + 3,
1493 
				longestTextWidth = max([labelWidth,titleWidth]);
1494 
 
1495 
			this.width = longestTextWidth + (this.xPadding*2);
1496 
 
1497 
 
1498 
			var halfHeight = this.height/2;
1499 
 
1500 
			//Check to ensure the height will fit on the canvas
1501 
			if (this.y - halfHeight < 0 ){
1502 
				this.y = halfHeight;
1503 
			} else if (this.y + halfHeight > this.chart.height){
1504 
				this.y = this.chart.height - halfHeight;
1505 
			}
1506 
 
1507 
			//Decide whether to align left or right based on position on canvas
1508 
			if (this.x > this.chart.width/2){
1509 
				this.x -= this.xOffset + this.width;
1510 
			} else {
1511 
				this.x += this.xOffset;
1512 
			}
1513 
 
1514 
 
1515 
		},
1516 
		getLineHeight : function(index){
1517 
			var baseLineHeight = this.y - (this.height/2) + this.yPadding,
1518 
				afterTitleIndex = index-1;
1519 
 
1520 
			//If the index is zero, we're getting the title
1521 
			if (index === 0){
1522 
				return baseLineHeight + this.titleHeight / 3;
1523 
			} else{
1524 
				return baseLineHeight + ((this.fontSize * 1.5 * afterTitleIndex) + this.fontSize / 2) + this.titleHeight;
1525 
			}
1526 
 
1527 
		},
1528 
		draw : function(){
1529 
			// Custom Tooltips
1530 
			if(this.custom){
1531 
				this.custom(this);
1532 
			}
1533 
			else{
1534 
				drawRoundedRectangle(this.ctx,this.x,this.y - this.height/2,this.width,this.height,this.cornerRadius);
1535 
				var ctx = this.ctx;
1536 
				ctx.fillStyle = this.fillColor;
1537 
				ctx.fill();
1538 
				ctx.closePath();
1539 
 
1540 
				ctx.textAlign = "left";
1541 
				ctx.textBaseline = "middle";
1542 
				ctx.fillStyle = this.titleTextColor;
1543 
				ctx.font = this.titleFont;
1544 
 
1545 
				ctx.fillText(this.title,this.x + this.xPadding, this.getLineHeight(0));
1546 
 
1547 
				ctx.font = this.font;
1548 
				helpers.each(this.labels,function(label,index){
1549 
					ctx.fillStyle = this.textColor;
1550 
					ctx.fillText(label,this.x + this.xPadding + this.fontSize + 3, this.getLineHeight(index + 1));
1551 
 
1552 
					//A bit gnarly, but clearing this rectangle breaks when using explorercanvas (clears whole canvas)
1553 
					//ctx.clearRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
1554 
					//Instead we'll make a white filled block to put the legendColour palette over.
1555 
 
1556 
					ctx.fillStyle = this.legendColorBackground;
1557 
					ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
1558 
 
1559 
					ctx.fillStyle = this.legendColors[index].fill;
1560 
					ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
1561 
 
1562 
 
1563 
				},this);
1564 
			}
1565 
		}
1566 
	});
1567 
 
1568 
	Chart.Scale = Chart.Element.extend({
1569 
		initialize : function(){
1570 
			this.fit();
1571 
		},
1572 
		buildYLabels : function(){
1573 
			this.yLabels = [];
1574 
 
1575 
			var stepDecimalPlaces = getDecimalPlaces(this.stepValue);
1576 
 
1577 
			for (var i=0; i<=this.steps; i++){
1578 
				this.yLabels.push(template(this.templateString,{value:(this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces)}));
1579 
			}
1580 
			this.yLabelWidth = (this.display && this.showLabels) ? longestText(this.ctx,this.font,this.yLabels) + 10 : 0;
1581 
		},
1582 
		addXLabel : function(label){
1583 
			this.xLabels.push(label);
1584 
			this.valuesCount++;
1585 
			this.fit();
1586 
		},
1587 
		removeXLabel : function(){
1588 
			this.xLabels.shift();
1589 
			this.valuesCount--;
1590 
			this.fit();
1591 
		},
1592 
		// Fitting loop to rotate x Labels and figure out what fits there, and also calculate how many Y steps to use
1593 
		fit: function(){
1594 
			// First we need the width of the yLabels, assuming the xLabels aren't rotated
1595 
 
1596 
			// To do that we need the base line at the top and base of the chart, assuming there is no x label rotation
1597 
			this.startPoint = (this.display) ? this.fontSize : 0;
1598 
			this.endPoint = (this.display) ? this.height - (this.fontSize * 1.5) - 5 : this.height; // -5 to pad labels
1599 
 
1600 
			// Apply padding settings to the start and end point.
1601 
			this.startPoint += this.padding;
1602 
			this.endPoint -= this.padding;
1603 
 
1604 
			// Cache the starting endpoint, excluding the space for x labels
1605 
			var cachedEndPoint = this.endPoint;
1606 
 
1607 
			// Cache the starting height, so can determine if we need to recalculate the scale yAxis
1608 
			var cachedHeight = this.endPoint - this.startPoint,
1609 
				cachedYLabelWidth;
1610 
 
1611 
			// Build the current yLabels so we have an idea of what size they'll be to start
1612 
			/*
1613 
			 *	This sets what is returned from calculateScaleRange as static properties of this class:
1614 
			 *
1615 
				this.steps;
1616 
				this.stepValue;
1617 
				this.min;
1618 
				this.max;
1619 
			 *
1620 
			 */
1621 
			this.calculateYRange(cachedHeight);
1622 
 
1623 
			// With these properties set we can now build the array of yLabels
1624 
			// and also the width of the largest yLabel
1625 
			this.buildYLabels();
1626 
 
1627 
			this.calculateXLabelRotation();
1628 
 
1629 
			while((cachedHeight > this.endPoint - this.startPoint)){
1630 
				cachedHeight = this.endPoint - this.startPoint;
1631 
				cachedYLabelWidth = this.yLabelWidth;
1632 
 
1633 
				this.calculateYRange(cachedHeight);
1634 
				this.buildYLabels();
1635 
 
1636 
				// Only go through the xLabel loop again if the yLabel width has changed
1637 
				if (cachedYLabelWidth < this.yLabelWidth){
1638 
					this.endPoint = cachedEndPoint;
1639 
					this.calculateXLabelRotation();
1640 
				}
1641 
			}
1642 
 
1643 
		},
1644 
		calculateXLabelRotation : function(){
1645 
			//Get the width of each grid by calculating the difference
1646 
			//between x offsets between 0 and 1.
1647 
 
1648 
			this.ctx.font = this.font;
1649 
 
1650 
			var firstWidth = this.ctx.measureText(this.xLabels[0]).width,
1651 
				lastWidth = this.ctx.measureText(this.xLabels[this.xLabels.length - 1]).width,
1652 
				firstRotated,
1653 
				lastRotated;
1654 
 
1655 
 
1656 
			this.xScalePaddingRight = lastWidth/2 + 3;
1657 
			this.xScalePaddingLeft = (firstWidth/2 > this.yLabelWidth) ? firstWidth/2 : this.yLabelWidth;
1658 
 
1659 
			this.xLabelRotation = 0;
1660 
			if (this.display){
1661 
				var originalLabelWidth = longestText(this.ctx,this.font,this.xLabels),
1662 
					cosRotation,
1663 
					firstRotatedWidth;
1664 
				this.xLabelWidth = originalLabelWidth;
1665 
				//Allow 3 pixels x2 padding either side for label readability
1666 
				var xGridWidth = Math.floor(this.calculateX(1) - this.calculateX(0)) - 6;
1667 
 
1668 
				//Max label rotate should be 90 - also act as a loop counter
1669 
				while ((this.xLabelWidth > xGridWidth && this.xLabelRotation === 0) || (this.xLabelWidth > xGridWidth && this.xLabelRotation <= 90 && this.xLabelRotation > 0)){
1670 
					cosRotation = Math.cos(toRadians(this.xLabelRotation));
1671 
 
1672 
					firstRotated = cosRotation * firstWidth;
1673 
					lastRotated = cosRotation * lastWidth;
1674 
 
1675 
					// We're right aligning the text now.
1676 
					if (firstRotated + this.fontSize / 2 > this.yLabelWidth){
1677 
						this.xScalePaddingLeft = firstRotated + this.fontSize / 2;
1678 
					}
1679 
					this.xScalePaddingRight = this.fontSize/2;
1680 
 
1681 
 
1682 
					this.xLabelRotation++;
1683 
					this.xLabelWidth = cosRotation * originalLabelWidth;
1684 
 
1685 
				}
1686 
				if (this.xLabelRotation > 0){
1687 
					this.endPoint -= Math.sin(toRadians(this.xLabelRotation))*originalLabelWidth + 3;
1688 
				}
1689 
			}
1690 
			else{
1691 
				this.xLabelWidth = 0;
1692 
				this.xScalePaddingRight = this.padding;
1693 
				this.xScalePaddingLeft = this.padding;
1694 
			}
1695 
 
1696 
		},
1697 
		// Needs to be overidden in each Chart type
1698 
		// Otherwise we need to pass all the data into the scale class
1699 
		calculateYRange: noop,
1700 
		drawingArea: function(){
1701 
			return this.startPoint - this.endPoint;
1702 
		},
1703 
		calculateY : function(value){
1704 
			var scalingFactor = this.drawingArea() / (this.min - this.max);
1705 
			return this.endPoint - (scalingFactor * (value - this.min));
1706 
		},
1707 
		calculateX : function(index){
1708 
			var isRotated = (this.xLabelRotation > 0),
1709 
				// innerWidth = (this.offsetGridLines) ? this.width - offsetLeft - this.padding : this.width - (offsetLeft + halfLabelWidth * 2) - this.padding,
1710 
				innerWidth = this.width - (this.xScalePaddingLeft + this.xScalePaddingRight),
1711 
				valueWidth = innerWidth/Math.max((this.valuesCount - ((this.offsetGridLines) ? 0 : 1)), 1),
1712 
				valueOffset = (valueWidth * index) + this.xScalePaddingLeft;
1713 
 
1714 
			if (this.offsetGridLines){
1715 
				valueOffset += (valueWidth/2);
1716 
			}
1717 
 
1718 
			return Math.round(valueOffset);
1719 
		},
1720 
		update : function(newProps){
1721 
			helpers.extend(this, newProps);
1722 
			this.fit();
1723 
		},
1724 
		draw : function(){
1725 
			var ctx = this.ctx,
1726 
				yLabelGap = (this.endPoint - this.startPoint) / this.steps,
1727 
				xStart = Math.round(this.xScalePaddingLeft);
1728 
			if (this.display){
1729 
				ctx.fillStyle = this.textColor;
1730 
				ctx.font = this.font;
1731 
				each(this.yLabels,function(labelString,index){
1732 
					var yLabelCenter = this.endPoint - (yLabelGap * index),
1733 
						linePositionY = Math.round(yLabelCenter),
1734 
						drawHorizontalLine = this.showHorizontalLines;
1735 
 
1736 
					ctx.textAlign = "right";
1737 
					ctx.textBaseline = "middle";
1738 
					if (this.showLabels){
1739 
						ctx.fillText(labelString,xStart - 10,yLabelCenter);
1740 
					}
1741 
 
1742 
					// This is X axis, so draw it
1743 
					if (index === 0 && !drawHorizontalLine){
1744 
						drawHorizontalLine = true;
1745 
					}
1746 
 
1747 
					if (drawHorizontalLine){
1748 
						ctx.beginPath();
1749 
					}
1750 
 
1751 
					if (index > 0){
1752 
						// This is a grid line in the centre, so drop that
1753 
						ctx.lineWidth = this.gridLineWidth;
1754 
						ctx.strokeStyle = this.gridLineColor;
1755 
					} else {
1756 
						// This is the first line on the scale
1757 
						ctx.lineWidth = this.lineWidth;
1758 
						ctx.strokeStyle = this.lineColor;
1759 
					}
1760 
 
1761 
					linePositionY += helpers.aliasPixel(ctx.lineWidth);
1762 
 
1763 
					if(drawHorizontalLine){
1764 
						ctx.moveTo(xStart, linePositionY);
1765 
						ctx.lineTo(this.width, linePositionY);
1766 
						ctx.stroke();
1767 
						ctx.closePath();
1768 
					}
1769 
 
1770 
					ctx.lineWidth = this.lineWidth;
1771 
					ctx.strokeStyle = this.lineColor;
1772 
					ctx.beginPath();
1773 
					ctx.moveTo(xStart - 5, linePositionY);
1774 
					ctx.lineTo(xStart, linePositionY);
1775 
					ctx.stroke();
1776 
					ctx.closePath();
1777 
 
1778 
				},this);
1779 
 
1780 
				each(this.xLabels,function(label,index){
1781 
					var xPos = this.calculateX(index) + aliasPixel(this.lineWidth),
1782 
						// Check to see if line/bar here and decide where to place the line
1783 
						linePos = this.calculateX(index - (this.offsetGridLines ? 0.5 : 0)) + aliasPixel(this.lineWidth),
1784 
						isRotated = (this.xLabelRotation > 0),
1785 
						drawVerticalLine = this.showVerticalLines;
1786 
 
1787 
					// This is Y axis, so draw it
1788 
					if (index === 0 && !drawVerticalLine){
1789 
						drawVerticalLine = true;
1790 
					}
1791 
 
1792 
					if (drawVerticalLine){
1793 
						ctx.beginPath();
1794 
					}
1795 
 
1796 
					if (index > 0){
1797 
						// This is a grid line in the centre, so drop that
1798 
						ctx.lineWidth = this.gridLineWidth;
1799 
						ctx.strokeStyle = this.gridLineColor;
1800 
					} else {
1801 
						// This is the first line on the scale
1802 
						ctx.lineWidth = this.lineWidth;
1803 
						ctx.strokeStyle = this.lineColor;
1804 
					}
1805 
 
1806 
					if (drawVerticalLine){
1807 
						ctx.moveTo(linePos,this.endPoint);
1808 
						ctx.lineTo(linePos,this.startPoint - 3);
1809 
						ctx.stroke();
1810 
						ctx.closePath();
1811 
					}
1812 
 
1813 
 
1814 
					ctx.lineWidth = this.lineWidth;
1815 
					ctx.strokeStyle = this.lineColor;
1816 
 
1817 
 
1818 
					// Small lines at the bottom of the base grid line
1819 
					ctx.beginPath();
1820 
					ctx.moveTo(linePos,this.endPoint);
1821 
					ctx.lineTo(linePos,this.endPoint + 5);
1822 
					ctx.stroke();
1823 
					ctx.closePath();
1824 
 
1825 
					ctx.save();
1826 
					ctx.translate(xPos,(isRotated) ? this.endPoint + 12 : this.endPoint + 8);
1827 
					ctx.rotate(toRadians(this.xLabelRotation)*-1);
1828 
					ctx.font = this.font;
1829 
					ctx.textAlign = (isRotated) ? "right" : "center";
1830 
					ctx.textBaseline = (isRotated) ? "middle" : "top";
1831 
					ctx.fillText(label, 0, 0);
1832 
					ctx.restore();
1833 
				},this);
1834 
 
1835 
			}
1836 
		}
1837 
 
1838 
	});
1839 
 
1840 
	Chart.RadialScale = Chart.Element.extend({
1841 
		initialize: function(){
1842 
			this.size = min([this.height, this.width]);
1843 
			this.drawingArea = (this.display) ? (this.size/2) - (this.fontSize/2 + this.backdropPaddingY) : (this.size/2);
1844 
		},
1845 
		calculateCenterOffset: function(value){
1846 
			// Take into account half font size + the yPadding of the top value
1847 
			var scalingFactor = this.drawingArea / (this.max - this.min);
1848 
 
1849 
			return (value - this.min) * scalingFactor;
1850 
		},
1851 
		update : function(){
1852 
			if (!this.lineArc){
1853 
				this.setScaleSize();
1854 
			} else {
1855 
				this.drawingArea = (this.display) ? (this.size/2) - (this.fontSize/2 + this.backdropPaddingY) : (this.size/2);
1856 
			}
1857 
			this.buildYLabels();
1858 
		},
1859 
		buildYLabels: function(){
1860 
			this.yLabels = [];
1861 
 
1862 
			var stepDecimalPlaces = getDecimalPlaces(this.stepValue);
1863 
 
1864 
			for (var i=0; i<=this.steps; i++){
1865 
				this.yLabels.push(template(this.templateString,{value:(this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces)}));
1866 
			}
1867 
		},
1868 
		getCircumference : function(){
1869 
			return ((Math.PI*2) / this.valuesCount);
1870 
		},
1871 
		setScaleSize: function(){
1872 
			/*
1873 
			 * Right, this is really confusing and there is a lot of maths going on here
1874 
			 * The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
1875 
			 *
1876 
			 * Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
1877 
			 *
1878 
			 * Solution:
1879 
			 *
1880 
			 * We assume the radius of the polygon is half the size of the canvas at first
1881 
			 * at each index we check if the text overlaps.
1882 
			 *
1883 
			 * Where it does, we store that angle and that index.
1884 
			 *
1885 
			 * After finding the largest index and angle we calculate how much we need to remove
1886 
			 * from the shape radius to move the point inwards by that x.
1887 
			 *
1888 
			 * We average the left and right distances to get the maximum shape radius that can fit in the box
1889 
			 * along with labels.
1890 
			 *
1891 
			 * Once we have that, we can find the centre point for the chart, by taking the x text protrusion
1892 
			 * on each side, removing that from the size, halving it and adding the left x protrusion width.
1893 
			 *
1894 
			 * This will mean we have a shape fitted to the canvas, as large as it can be with the labels
1895 
			 * and position it in the most space efficient manner
1896 
			 *
1897 
			 * https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
1898 
			 */
1899 
 
1900 
 
1901 
			// Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
1902 
			// Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
1903 
			var largestPossibleRadius = min([(this.height/2 - this.pointLabelFontSize - 5), this.width/2]),
1904 
				pointPosition,
1905 
				i,
1906 
				textWidth,
1907 
				halfTextWidth,
1908 
				furthestRight = this.width,
1909 
				furthestRightIndex,
1910 
				furthestRightAngle,
1911 
				furthestLeft = 0,
1912 
				furthestLeftIndex,
1913 
				furthestLeftAngle,
1914 
				xProtrusionLeft,
1915 
				xProtrusionRight,
1916 
				radiusReductionRight,
1917 
				radiusReductionLeft,
1918 
				maxWidthRadius;
1919 
			this.ctx.font = fontString(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily);
1920 
			for (i=0;i<this.valuesCount;i++){
1921 
				// 5px to space the text slightly out - similar to what we do in the draw function.
1922 
				pointPosition = this.getPointPosition(i, largestPossibleRadius);
1923 
				textWidth = this.ctx.measureText(template(this.templateString, { value: this.labels[i] })).width + 5;
1924 
				if (i === 0 || i === this.valuesCount/2){
1925 
					// If we're at index zero, or exactly the middle, we're at exactly the top/bottom
1926 
					// of the radar chart, so text will be aligned centrally, so we'll half it and compare
1927 
					// w/left and right text sizes
1928 
					halfTextWidth = textWidth/2;
1929 
					if (pointPosition.x + halfTextWidth > furthestRight) {
1930 
						furthestRight = pointPosition.x + halfTextWidth;
1931 
						furthestRightIndex = i;
1932 
					}
1933 
					if (pointPosition.x - halfTextWidth < furthestLeft) {
1934 
						furthestLeft = pointPosition.x - halfTextWidth;
1935 
						furthestLeftIndex = i;
1936 
					}
1937 
				}
1938 
				else if (i < this.valuesCount/2) {
1939 
					// Less than half the values means we'll left align the text
1940 
					if (pointPosition.x + textWidth > furthestRight) {
1941 
						furthestRight = pointPosition.x + textWidth;
1942 
						furthestRightIndex = i;
1943 
					}
1944 
				}
1945 
				else if (i > this.valuesCount/2){
1946 
					// More than half the values means we'll right align the text
1947 
					if (pointPosition.x - textWidth < furthestLeft) {
1948 
						furthestLeft = pointPosition.x - textWidth;
1949 
						furthestLeftIndex = i;
1950 
					}
1951 
				}
1952 
			}
1953 
 
1954 
			xProtrusionLeft = furthestLeft;
1955 
 
1956 
			xProtrusionRight = Math.ceil(furthestRight - this.width);
1957 
 
1958 
			furthestRightAngle = this.getIndexAngle(furthestRightIndex);
1959 
 
1960 
			furthestLeftAngle = this.getIndexAngle(furthestLeftIndex);
1961 
 
1962 
			radiusReductionRight = xProtrusionRight / Math.sin(furthestRightAngle + Math.PI/2);
1963 
 
1964 
			radiusReductionLeft = xProtrusionLeft / Math.sin(furthestLeftAngle + Math.PI/2);
1965 
 
1966 
			// Ensure we actually need to reduce the size of the chart
1967 
			radiusReductionRight = (isNumber(radiusReductionRight)) ? radiusReductionRight : 0;
1968 
			radiusReductionLeft = (isNumber(radiusReductionLeft)) ? radiusReductionLeft : 0;
1969 
 
1970 
			this.drawingArea = largestPossibleRadius - (radiusReductionLeft + radiusReductionRight)/2;
1971 
 
1972 
			//this.drawingArea = min([maxWidthRadius, (this.height - (2 * (this.pointLabelFontSize + 5)))/2])
1973 
			this.setCenterPoint(radiusReductionLeft, radiusReductionRight);
1974 
 
1975 
		},
1976 
		setCenterPoint: function(leftMovement, rightMovement){
1977 
 
1978 
			var maxRight = this.width - rightMovement - this.drawingArea,
1979 
				maxLeft = leftMovement + this.drawingArea;
1980 
 
1981 
			this.xCenter = (maxLeft + maxRight)/2;
1982 
			// Always vertically in the centre as the text height doesn't change
1983 
			this.yCenter = (this.height/2);
1984 
		},
1985 
 
1986 
		getIndexAngle : function(index){
1987 
			var angleMultiplier = (Math.PI * 2) / this.valuesCount;
1988 
			// Start from the top instead of right, so remove a quarter of the circle
1989 
 
1990 
			return index * angleMultiplier - (Math.PI/2);
1991 
		},
1992 
		getPointPosition : function(index, distanceFromCenter){
1993 
			var thisAngle = this.getIndexAngle(index);
1994 
			return {
1995 
				x : (Math.cos(thisAngle) * distanceFromCenter) + this.xCenter,
1996 
				y : (Math.sin(thisAngle) * distanceFromCenter) + this.yCenter
1997 
			};
1998 
		},
1999 
		draw: function(){
2000 
			if (this.display){
2001 
				var ctx = this.ctx;
2002 
				each(this.yLabels, function(label, index){
2003 
					// Don't draw a centre value
2004 
					if (index > 0){
2005 
						var yCenterOffset = index * (this.drawingArea/this.steps),
2006 
							yHeight = this.yCenter - yCenterOffset,
2007 
							pointPosition;
2008 
 
2009 
						// Draw circular lines around the scale
2010 
						if (this.lineWidth > 0){
2011 
							ctx.strokeStyle = this.lineColor;
2012 
							ctx.lineWidth = this.lineWidth;
2013 
 
2014 
							if(this.lineArc){
2015 
								ctx.beginPath();
2016 
								ctx.arc(this.xCenter, this.yCenter, yCenterOffset, 0, Math.PI*2);
2017 
								ctx.closePath();
2018 
								ctx.stroke();
2019 
							} else{
2020 
								ctx.beginPath();
2021 
								for (var i=0;i<this.valuesCount;i++)
2022 
								{
2023 
									pointPosition = this.getPointPosition(i, this.calculateCenterOffset(this.min + (index * this.stepValue)));
2024 
									if (i === 0){
2025 
										ctx.moveTo(pointPosition.x, pointPosition.y);
2026 
									} else {
2027 
										ctx.lineTo(pointPosition.x, pointPosition.y);
2028 
									}
2029 
								}
2030 
								ctx.closePath();
2031 
								ctx.stroke();
2032 
							}
2033 
						}
2034 
						if(this.showLabels){
2035 
							ctx.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
2036 
							if (this.showLabelBackdrop){
2037 
								var labelWidth = ctx.measureText(label).width;
2038 
								ctx.fillStyle = this.backdropColor;
2039 
								ctx.fillRect(
2040 
									this.xCenter - labelWidth/2 - this.backdropPaddingX,
2041 
									yHeight - this.fontSize/2 - this.backdropPaddingY,
2042 
									labelWidth + this.backdropPaddingX*2,
2043 
									this.fontSize + this.backdropPaddingY*2
2044 
								);
2045 
							}
2046 
							ctx.textAlign = 'center';
2047 
							ctx.textBaseline = "middle";
2048 
							ctx.fillStyle = this.fontColor;
2049 
							ctx.fillText(label, this.xCenter, yHeight);
2050 
						}
2051 
					}
2052 
				}, this);
2053 
 
2054 
				if (!this.lineArc){
2055 
					ctx.lineWidth = this.angleLineWidth;
2056 
					ctx.strokeStyle = this.angleLineColor;
2057 
					for (var i = this.valuesCount - 1; i >= 0; i--) {
2058 
						var centerOffset = null, outerPosition = null;
2059 
 
2060 
						if (this.angleLineWidth > 0 && (i % this.angleLineInterval === 0)){
2061 
							centerOffset = this.calculateCenterOffset(this.max);
2062 
							outerPosition = this.getPointPosition(i, centerOffset);
2063 
							ctx.beginPath();
2064 
							ctx.moveTo(this.xCenter, this.yCenter);
2065 
							ctx.lineTo(outerPosition.x, outerPosition.y);
2066 
							ctx.stroke();
2067 
							ctx.closePath();
2068 
						}
2069 
 
2070 
						if (this.backgroundColors && this.backgroundColors.length == this.valuesCount) {
2071 
							if (centerOffset == null)
2072 
								centerOffset = this.calculateCenterOffset(this.max);
2073 
 
2074 
							if (outerPosition == null)
2075 
								outerPosition = this.getPointPosition(i, centerOffset);
2076 
 
2077 
							var previousOuterPosition = this.getPointPosition(i === 0 ? this.valuesCount - 1 : i - 1, centerOffset);
2078 
							var nextOuterPosition = this.getPointPosition(i === this.valuesCount - 1 ? 0 : i + 1, centerOffset);
2079 
 
2080 
							var previousOuterHalfway = { x: (previousOuterPosition.x + outerPosition.x) / 2, y: (previousOuterPosition.y + outerPosition.y) / 2 };
2081 
							var nextOuterHalfway = { x: (outerPosition.x + nextOuterPosition.x) / 2, y: (outerPosition.y + nextOuterPosition.y) / 2 };
2082 
 
2083 
							ctx.beginPath();
2084 
							ctx.moveTo(this.xCenter, this.yCenter);
2085 
							ctx.lineTo(previousOuterHalfway.x, previousOuterHalfway.y);
2086 
							ctx.lineTo(outerPosition.x, outerPosition.y);
2087 
							ctx.lineTo(nextOuterHalfway.x, nextOuterHalfway.y);
2088 
							ctx.fillStyle = this.backgroundColors[i];
2089 
							ctx.fill();
2090 
							ctx.closePath();
2091 
						}
2092 
						// Extra 3px out for some label spacing
2093 
						var pointLabelPosition = this.getPointPosition(i, this.calculateCenterOffset(this.max) + 5);
2094 
						ctx.font = fontString(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily);
2095 
						ctx.fillStyle = this.pointLabelFontColor;
2096 
 
2097 
						var labelsCount = this.labels.length,
2098 
							halfLabelsCount = this.labels.length/2,
2099 
							quarterLabelsCount = halfLabelsCount/2,
2100 
							upperHalf = (i < quarterLabelsCount || i > labelsCount - quarterLabelsCount),
2101 
							exactQuarter = (i === quarterLabelsCount || i === labelsCount - quarterLabelsCount);
2102 
						if (i === 0){
2103 
							ctx.textAlign = 'center';
2104 
						} else if(i === halfLabelsCount){
2105 
							ctx.textAlign = 'center';
2106 
						} else if (i < halfLabelsCount){
2107 
							ctx.textAlign = 'left';
2108 
						} else {
2109 
							ctx.textAlign = 'right';
2110 
						}
2111 
 
2112 
						// Set the correct text baseline based on outer positioning
2113 
						if (exactQuarter){
2114 
							ctx.textBaseline = 'middle';
2115 
						} else if (upperHalf){
2116 
							ctx.textBaseline = 'bottom';
2117 
						} else {
2118 
							ctx.textBaseline = 'top';
2119 
						}
2120 
 
2121 
						ctx.fillText(this.labels[i], pointLabelPosition.x, pointLabelPosition.y);
2122 
					}
2123 
				}
2124 
			}
2125 
		}
2126 
	});
2127 
 
2128 
	Chart.animationService = {
2129 
		frameDuration: 17,
2130 
		animations: [],
2131 
		dropFrames: 0,
2132 
		addAnimation: function(chartInstance, animationObject) {
2133 
			for (var index = 0; index < this.animations.length; ++ index){
2134 
				if (this.animations[index].chartInstance === chartInstance){
2135 
					// replacing an in progress animation
2136 
					this.animations[index].animationObject = animationObject;
2137 
					return;
2138 
				}
2139 
			}
2140 
 
2141 
			this.animations.push({
2142 
				chartInstance: chartInstance,
2143 
				animationObject: animationObject
2144 
			});
2145 
 
2146 
			// If there are no animations queued, manually kickstart a digest, for lack of a better word
2147 
			if (this.animations.length == 1) {
2148 
				helpers.requestAnimFrame.call(window, this.digestWrapper);
2149 
			}
2150 
		},
2151 
		// Cancel the animation for a given chart instance
2152 
		cancelAnimation: function(chartInstance) {
2153 
			var index = helpers.findNextWhere(this.animations, function(animationWrapper) {
2154 
				return animationWrapper.chartInstance === chartInstance;
2155 
			});
2156 
 
2157 
			if (index)
2158 
			{
2159 
				this.animations.splice(index, 1);
2160 
			}
2161 
		},
2162 
		// calls startDigest with the proper context
2163 
		digestWrapper: function() {
2164 
			Chart.animationService.startDigest.call(Chart.animationService);
2165 
		},
2166 
		startDigest: function() {
2167 
 
2168 
			var startTime = Date.now();
2169 
			var framesToDrop = 0;
2170 
 
2171 
			if(this.dropFrames > 1){
2172 
				framesToDrop = Math.floor(this.dropFrames);
2173 
				this.dropFrames -= framesToDrop;
2174 
			}
2175 
 
2176 
			for (var i = 0; i < this.animations.length; i++) {
2177 
 
2178 
				if (this.animations[i].animationObject.currentStep === null){
2179 
					this.animations[i].animationObject.currentStep = 0;
2180 
				}
2181 
 
2182 
				this.animations[i].animationObject.currentStep += 1 + framesToDrop;
2183 
				if(this.animations[i].animationObject.currentStep > this.animations[i].animationObject.numSteps){
2184 
					this.animations[i].animationObject.currentStep = this.animations[i].animationObject.numSteps;
2185 
				}
2186 
 
2187 
				this.animations[i].animationObject.render(this.animations[i].chartInstance, this.animations[i].animationObject);
2188 
 
2189 
				// Check if executed the last frame.
2190 
				if (this.animations[i].animationObject.currentStep == this.animations[i].animationObject.numSteps){
2191 
					// Call onAnimationComplete
2192 
					this.animations[i].animationObject.onAnimationComplete.call(this.animations[i].chartInstance);
2193 
					// Remove the animation.
2194 
					this.animations.splice(i, 1);
2195 
					// Keep the index in place to offset the splice
2196 
					i--;
2197 
				}
2198 
			}
2199 
 
2200 
			var endTime = Date.now();
2201 
			var delay = endTime - startTime - this.frameDuration;
2202 
			var frameDelay = delay / this.frameDuration;
2203 
 
2204 
			if(frameDelay > 1){
2205 
				this.dropFrames += frameDelay;
2206 
			}
2207 
 
2208 
			// Do we have more stuff to animate?
2209 
			if (this.animations.length > 0){
2210 
				helpers.requestAnimFrame.call(window, this.digestWrapper);
2211 
			}
2212 
		}
2213 
	};
2214 
 
2215 
	// Attach global event to resize each chart instance when the browser resizes
2216 
	helpers.addEvent(window, "resize", (function(){
2217 
		// Basic debounce of resize function so it doesn't hurt performance when resizing browser.
2218 
		var timeout;
2219 
		return function(){
2220 
			clearTimeout(timeout);
2221 
			timeout = setTimeout(function(){
2222 
				each(Chart.instances,function(instance){
2223 
					// If the responsive flag is set in the chart instance config
2224 
					// Cascade the resize event down to the chart.
2225 
					if (instance.options.responsive){
2226 
						instance.resize(instance.render, true);
2227 
					}
2228 
				});
2229 
			}, 50);
2230 
		};
2231 
	})());
2232 
 
2233 
 
2234 
	if (amd) {
2235 
		define('Chart', [], function(){
2236 
			return Chart;
2237 
		});
2238 
	} else if (typeof module === 'object' && module.exports) {
2239 
		module.exports = Chart;
2240 
	}
2241 
 
2242 
	root.Chart = Chart;
2243 
 
2244 
	Chart.noConflict = function(){
2245 
		root.Chart = previous;
2246 
		return Chart;
2247 
	};
2248 
 
2249 
}).call(this);
2250 
 
2251 
(function(){
2252 
	"use strict";
2253 
 
2254 
	var root = this,
2255 
		Chart = root.Chart,
2256 
		helpers = Chart.helpers;
2257 
 
2258 
 
2259 
	var defaultConfig = {
2260 
		//Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value
2261 
		scaleBeginAtZero : true,
2262 
 
2263 
		//Boolean - Whether grid lines are shown across the chart
2264 
		scaleShowGridLines : true,
2265 
 
2266 
		//String - Colour of the grid lines
2267 
		scaleGridLineColor : "rgba(0,0,0,.05)",
2268 
 
2269 
		//Number - Width of the grid lines
2270 
		scaleGridLineWidth : 1,
2271 
 
2272 
		//Boolean - Whether to show horizontal lines (except X axis)
2273 
		scaleShowHorizontalLines: true,
2274 
 
2275 
		//Boolean - Whether to show vertical lines (except Y axis)
2276 
		scaleShowVerticalLines: true,
2277 
 
2278 
		//Boolean - If there is a stroke on each bar
2279 
		barShowStroke : true,
2280 
 
2281 
		//Number - Pixel width of the bar stroke
2282 
		barStrokeWidth : 2,
2283 
 
2284 
		//Number - Spacing between each of the X value sets
2285 
		barValueSpacing : 5,
2286 
 
2287 
		//Number - Spacing between data sets within X values
2288 
		barDatasetSpacing : 1,
2289 
 
2290 
		//String - A legend template
2291 
		legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span class=\"<%=name.toLowerCase()%>-legend-icon\" style=\"background-color:<%=datasets[i].fillColor%>\"></span><span class=\"<%=name.toLowerCase()%>-legend-text\"><%if(datasets[i].label){%><%=datasets[i].label%><%}%></span></li><%}%></ul>"
2292 
 
2293 
	};
2294 
 
2295 
 
2296 
	Chart.Type.extend({
2297 
		name: "Bar",
2298 
		defaults : defaultConfig,
2299 
		initialize:  function(data){
2300 
 
2301 
			//Expose options as a scope variable here so we can access it in the ScaleClass
2302 
			var options = this.options;
2303 
 
2304 
			this.ScaleClass = Chart.Scale.extend({
2305 
				offsetGridLines : true,
2306 
				calculateBarX : function(datasetCount, datasetIndex, barIndex){
2307 
					//Reusable method for calculating the xPosition of a given bar based on datasetIndex & width of the bar
2308 
					var xWidth = this.calculateBaseWidth(),
2309 
						xAbsolute = this.calculateX(barIndex) - (xWidth/2),
2310 
						barWidth = this.calculateBarWidth(datasetCount);
2311 
 
2312 
					return xAbsolute + (barWidth * datasetIndex) + (datasetIndex * options.barDatasetSpacing) + barWidth/2;
2313 
				},
2314 
				calculateBaseWidth : function(){
2315 
					return (this.calculateX(1) - this.calculateX(0)) - (2*options.barValueSpacing);
2316 
				},
2317 
				calculateBarWidth : function(datasetCount){
2318 
					//The padding between datasets is to the right of each bar, providing that there are more than 1 dataset
2319 
					var baseWidth = this.calculateBaseWidth() - ((datasetCount - 1) * options.barDatasetSpacing);
2320 
 
2321 
					return (baseWidth / datasetCount);
2322 
				}
2323 
			});
2324 
 
2325 
			this.datasets = [];
2326 
 
2327 
			//Set up tooltip events on the chart
2328 
			if (this.options.showTooltips){
2329 
				helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
2330 
					var activeBars = (evt.type !== 'mouseout') ? this.getBarsAtEvent(evt) : [];
2331 
 
2332 
					this.eachBars(function(bar){
2333 
						bar.restore(['fillColor', 'strokeColor']);
2334 
					});
2335 
					helpers.each(activeBars, function(activeBar){
2336 
						if (activeBar) {
2337 
							activeBar.fillColor = activeBar.highlightFill;
2338 
							activeBar.strokeColor = activeBar.highlightStroke;
2339 
						}
2340 
					});
2341 
					this.showTooltip(activeBars);
2342 
				});
2343 
			}
2344 
 
2345 
			//Declare the extension of the default point, to cater for the options passed in to the constructor
2346 
			this.BarClass = Chart.Rectangle.extend({
2347 
				strokeWidth : this.options.barStrokeWidth,
2348 
				showStroke : this.options.barShowStroke,
2349 
				ctx : this.chart.ctx
2350 
			});
2351 
 
2352 
			//Iterate through each of the datasets, and build this into a property of the chart
2353 
			helpers.each(data.datasets,function(dataset,datasetIndex){
2354 
 
2355 
				var datasetObject = {
2356 
					label : dataset.label || null,
2357 
					fillColor : dataset.fillColor,
2358 
					strokeColor : dataset.strokeColor,
2359 
					bars : []
2360 
				};
2361 
 
2362 
				this.datasets.push(datasetObject);
2363 
 
2364 
				helpers.each(dataset.data,function(dataPoint,index){
2365 
					//Add a new point for each piece of data, passing any required data to draw.
2366 
					datasetObject.bars.push(new this.BarClass({
2367 
						value : dataPoint,
2368 
						label : data.labels[index],
2369 
						datasetLabel: dataset.label,
2370 
						strokeColor : (typeof dataset.strokeColor == 'object') ? dataset.strokeColor[index] : dataset.strokeColor,
2371 
						fillColor : (typeof dataset.fillColor == 'object') ? dataset.fillColor[index] : dataset.fillColor,
2372 
						highlightFill : (dataset.highlightFill) ? (typeof dataset.highlightFill == 'object') ? dataset.highlightFill[index] : dataset.highlightFill : (typeof dataset.fillColor == 'object') ? dataset.fillColor[index] : dataset.fillColor,
2373 
						highlightStroke : (dataset.highlightStroke) ? (typeof dataset.highlightStroke == 'object') ? dataset.highlightStroke[index] : dataset.highlightStroke : (typeof dataset.strokeColor == 'object') ? dataset.strokeColor[index] : dataset.strokeColor
2374 
					}));
2375 
				},this);
2376 
 
2377 
			},this);
2378 
 
2379 
			this.buildScale(data.labels);
2380 
 
2381 
			this.BarClass.prototype.base = this.scale.endPoint;
2382 
 
2383 
			this.eachBars(function(bar, index, datasetIndex){
2384 
				helpers.extend(bar, {
2385 
					width : this.scale.calculateBarWidth(this.datasets.length),
2386 
					x: this.scale.calculateBarX(this.datasets.length, datasetIndex, index),
2387 
					y: this.scale.endPoint
2388 
				});
2389 
				bar.save();
2390 
			}, this);
2391 
 
2392 
			this.render();
2393 
		},
2394 
		update : function(){
2395 
			this.scale.update();
2396 
			// Reset any highlight colours before updating.
2397 
			helpers.each(this.activeElements, function(activeElement){
2398 
				activeElement.restore(['fillColor', 'strokeColor']);
2399 
			});
2400 
 
2401 
			this.eachBars(function(bar){
2402 
				bar.save();
2403 
			});
2404 
			this.render();
2405 
		},
2406 
		eachBars : function(callback){
2407 
			helpers.each(this.datasets,function(dataset, datasetIndex){
2408 
				helpers.each(dataset.bars, callback, this, datasetIndex);
2409 
			},this);
2410 
		},
2411 
		getBarsAtEvent : function(e){
2412 
			var barsArray = [],
2413 
				eventPosition = helpers.getRelativePosition(e),
2414 
				datasetIterator = function(dataset){
2415 
					barsArray.push(dataset.bars[barIndex]);
2416 
				},
2417 
				barIndex;
2418 
 
2419 
			for (var datasetIndex = 0; datasetIndex < this.datasets.length; datasetIndex++) {
2420 
				for (barIndex = 0; barIndex < this.datasets[datasetIndex].bars.length; barIndex++) {
2421 
					if (this.datasets[datasetIndex].bars[barIndex].inRange(eventPosition.x,eventPosition.y)){
2422 
						helpers.each(this.datasets, datasetIterator);
2423 
						return barsArray;
2424 
					}
2425 
				}
2426 
			}
2427 
 
2428 
			return barsArray;
2429 
		},
2430 
		buildScale : function(labels){
2431 
			var self = this;
2432 
 
2433 
			var dataTotal = function(){
2434 
				var values = [];
2435 
				self.eachBars(function(bar){
2436 
					values.push(bar.value);
2437 
				});
2438 
				return values;
2439 
			};
2440 
 
2441 
			var scaleOptions = {
2442 
				templateString : this.options.scaleLabel,
2443 
				height : this.chart.height,
2444 
				width : this.chart.width,
2445 
				ctx : this.chart.ctx,
2446 
				textColor : this.options.scaleFontColor,
2447 
				fontSize : this.options.scaleFontSize,
2448 
				fontStyle : this.options.scaleFontStyle,
2449 
				fontFamily : this.options.scaleFontFamily,
2450 
				valuesCount : labels.length,
2451 
				beginAtZero : this.options.scaleBeginAtZero,
2452 
				integersOnly : this.options.scaleIntegersOnly,
2453 
				calculateYRange: function(currentHeight){
2454 
					var updatedRanges = helpers.calculateScaleRange(
2455 
						dataTotal(),
2456 
						currentHeight,
2457 
						this.fontSize,
2458 
						this.beginAtZero,
2459 
						this.integersOnly
2460 
					);
2461 
					helpers.extend(this, updatedRanges);
2462 
				},
2463 
				xLabels : labels,
2464 
				font : helpers.fontString(this.options.scaleFontSize, this.options.scaleFontStyle, this.options.scaleFontFamily),
2465 
				lineWidth : this.options.scaleLineWidth,
2466 
				lineColor : this.options.scaleLineColor,
2467 
				showHorizontalLines : this.options.scaleShowHorizontalLines,
2468 
				showVerticalLines : this.options.scaleShowVerticalLines,
2469 
				gridLineWidth : (this.options.scaleShowGridLines) ? this.options.scaleGridLineWidth : 0,
2470 
				gridLineColor : (this.options.scaleShowGridLines) ? this.options.scaleGridLineColor : "rgba(0,0,0,0)",
2471 
				padding : (this.options.showScale) ? 0 : (this.options.barShowStroke) ? this.options.barStrokeWidth : 0,
2472 
				showLabels : this.options.scaleShowLabels,
2473 
				display : this.options.showScale
2474 
			};
2475 
 
2476 
			if (this.options.scaleOverride){
2477 
				helpers.extend(scaleOptions, {
2478 
					calculateYRange: helpers.noop,
2479 
					steps: this.options.scaleSteps,
2480 
					stepValue: this.options.scaleStepWidth,
2481 
					min: this.options.scaleStartValue,
2482 
					max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
2483 
				});
2484 
			}
2485 
 
2486 
			this.scale = new this.ScaleClass(scaleOptions);
2487 
		},
2488 
		addData : function(valuesArray,label){
2489 
			//Map the values array for each of the datasets
2490 
			helpers.each(valuesArray,function(value,datasetIndex){
2491 
				//Add a new point for each piece of data, passing any required data to draw.
2492 
				this.datasets[datasetIndex].bars.push(new this.BarClass({
2493 
					value : value,
2494 
					label : label,
2495 
					datasetLabel: this.datasets[datasetIndex].label,
2496 
					x: this.scale.calculateBarX(this.datasets.length, datasetIndex, this.scale.valuesCount+1),
2497 
					y: this.scale.endPoint,
2498 
					width : this.scale.calculateBarWidth(this.datasets.length),
2499 
					base : this.scale.endPoint,
2500 
					strokeColor : this.datasets[datasetIndex].strokeColor,
2501 
					fillColor : this.datasets[datasetIndex].fillColor
2502 
				}));
2503 
			},this);
2504 
 
2505 
			this.scale.addXLabel(label);
2506 
			//Then re-render the chart.
2507 
			this.update();
2508 
		},
2509 
		removeData : function(){
2510 
			this.scale.removeXLabel();
2511 
			//Then re-render the chart.
2512 
			helpers.each(this.datasets,function(dataset){
2513 
				dataset.bars.shift();
2514 
			},this);
2515 
			this.update();
2516 
		},
2517 
		reflow : function(){
2518 
			helpers.extend(this.BarClass.prototype,{
2519 
				y: this.scale.endPoint,
2520 
				base : this.scale.endPoint
2521 
			});
2522 
			var newScaleProps = helpers.extend({
2523 
				height : this.chart.height,
2524 
				width : this.chart.width
2525 
			});
2526 
			this.scale.update(newScaleProps);
2527 
		},
2528 
		draw : function(ease){
2529 
			var easingDecimal = ease || 1;
2530 
			this.clear();
2531 
 
2532 
			var ctx = this.chart.ctx;
2533 
 
2534 
			this.scale.draw(easingDecimal);
2535 
 
2536 
			//Draw all the bars for each dataset
2537 
			helpers.each(this.datasets,function(dataset,datasetIndex){
2538 
				helpers.each(dataset.bars,function(bar,index){
2539 
					if (bar.hasValue()){
2540 
						bar.base = this.scale.endPoint;
2541 
						//Transition then draw
2542 
						bar.transition({
2543 
							x : this.scale.calculateBarX(this.datasets.length, datasetIndex, index),
2544 
							y : this.scale.calculateY(bar.value),
2545 
							width : this.scale.calculateBarWidth(this.datasets.length)
2546 
						}, easingDecimal).draw();
2547 
					}
2548 
				},this);
2549 
 
2550 
			},this);
2551 
		}
2552 
	});
2553 
 
2554 
 
2555 
}).call(this);
2556 
 
2557 
(function(){
2558 
	"use strict";
2559 
 
2560 
	var root = this,
2561 
		Chart = root.Chart,
2562 
		//Cache a local reference to Chart.helpers
2563 
		helpers = Chart.helpers;
2564 
 
2565 
	var defaultConfig = {
2566 
		//Boolean - Whether we should show a stroke on each segment
2567 
		segmentShowStroke : true,
2568 
 
2569 
		//String - The colour of each segment stroke
2570 
		segmentStrokeColor : "#fff",
2571 
 
2572 
		//Number - The width of each segment stroke
2573 
		segmentStrokeWidth : 2,
2574 
 
2575 
		//The percentage of the chart that we cut out of the middle.
2576 
		percentageInnerCutout : 50,
2577 
 
2578 
		//Number - Amount of animation steps
2579 
		animationSteps : 100,
2580 
 
2581 
		//String - Animation easing effect
2582 
		animationEasing : "easeOutBounce",
2583 
 
2584 
		//Boolean - Whether we animate the rotation of the Doughnut
2585 
		animateRotate : true,
2586 
 
2587 
		//Boolean - Whether we animate scaling the Doughnut from the centre
2588 
		animateScale : false,
2589 
 
2590 
		//String - A legend template
2591 
		legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span class=\"<%=name.toLowerCase()%>-legend-icon\" style=\"background-color:<%=segments[i].fillColor%>\"></span><span class=\"<%=name.toLowerCase()%>-legend-text\"><%if(segments[i].label){%><%=segments[i].label%><%}%></span></li><%}%></ul>"
2592 
 
2593 
	};
2594 
 
2595 
	Chart.Type.extend({
2596 
		//Passing in a name registers this chart in the Chart namespace
2597 
		name: "Doughnut",
2598 
		//Providing a defaults will also register the defaults in the chart namespace
2599 
		defaults : defaultConfig,
2600 
		//Initialize is fired when the chart is initialized - Data is passed in as a parameter
2601 
		//Config is automatically merged by the core of Chart.js, and is available at this.options
2602 
		initialize:  function(data){
2603 
 
2604 
			//Declare segments as a static property to prevent inheriting across the Chart type prototype
2605 
			this.segments = [];
2606 
			this.outerRadius = (helpers.min([this.chart.width,this.chart.height]) -	this.options.segmentStrokeWidth/2)/2;
2607 
 
2608 
			this.SegmentArc = Chart.Arc.extend({
2609 
				ctx : this.chart.ctx,
2610 
				x : this.chart.width/2,
2611 
				y : this.chart.height/2
2612 
			});
2613 
 
2614 
			//Set up tooltip events on the chart
2615 
			if (this.options.showTooltips){
2616 
				helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
2617 
					var activeSegments = (evt.type !== 'mouseout') ? this.getSegmentsAtEvent(evt) : [];
2618 
 
2619 
					helpers.each(this.segments,function(segment){
2620 
						segment.restore(["fillColor"]);
2621 
					});
2622 
					helpers.each(activeSegments,function(activeSegment){
2623 
						activeSegment.fillColor = activeSegment.highlightColor;
2624 
					});
2625 
					this.showTooltip(activeSegments);
2626 
				});
2627 
			}
2628 
			this.calculateTotal(data);
2629 
 
2630 
			helpers.each(data,function(datapoint, index){
2631 
				if (!datapoint.color) {
2632 
					datapoint.color = 'hsl(' + (360 * index / data.length) + ', 100%, 50%)';
2633 
				}
2634 
				this.addData(datapoint, index, true);
2635 
			},this);
2636 
 
2637 
			this.render();
2638 
		},
2639 
		getSegmentsAtEvent : function(e){
2640 
			var segmentsArray = [];
2641 
 
2642 
			var location = helpers.getRelativePosition(e);
2643 
 
2644 
			helpers.each(this.segments,function(segment){
2645 
				if (segment.inRange(location.x,location.y)) segmentsArray.push(segment);
2646 
			},this);
2647 
			return segmentsArray;
2648 
		},
2649 
		addData : function(segment, atIndex, silent){
2650 
			var index = atIndex !== undefined ? atIndex : this.segments.length;
2651 
			if ( typeof(segment.color) === "undefined" ) {
2652 
				segment.color = Chart.defaults.global.segmentColorDefault[index % Chart.defaults.global.segmentColorDefault.length];
2653 
				segment.highlight = Chart.defaults.global.segmentHighlightColorDefaults[index % Chart.defaults.global.segmentHighlightColorDefaults.length];
2654 
			}
2655 
			this.segments.splice(index, 0, new this.SegmentArc({
2656 
				value : segment.value,
2657 
				outerRadius : (this.options.animateScale) ? 0 : this.outerRadius,
2658 
				innerRadius : (this.options.animateScale) ? 0 : (this.outerRadius/100) * this.options.percentageInnerCutout,
2659 
				fillColor : segment.color,
2660 
				highlightColor : segment.highlight || segment.color,
2661 
				showStroke : this.options.segmentShowStroke,
2662 
				strokeWidth : this.options.segmentStrokeWidth,
2663 
				strokeColor : this.options.segmentStrokeColor,
2664 
				startAngle : Math.PI * 1.5,
2665 
				circumference : (this.options.animateRotate) ? 0 : this.calculateCircumference(segment.value),
2666 
				label : segment.label
2667 
			}));
2668 
			if (!silent){
2669 
				this.reflow();
2670 
				this.update();
2671 
			}
2672 
		},
2673 
		calculateCircumference : function(value) {
2674 
			if ( this.total > 0 ) {
2675 
				return (Math.PI*2)*(value / this.total);
2676 
			} else {
2677 
				return 0;
2678 
			}
2679 
		},
2680 
		calculateTotal : function(data){
2681 
			this.total = 0;
2682 
			helpers.each(data,function(segment){
2683 
				this.total += Math.abs(segment.value);
2684 
			},this);
2685 
		},
2686 
		update : function(){
2687 
			this.calculateTotal(this.segments);
2688 
 
2689 
			// Reset any highlight colours before updating.
2690 
			helpers.each(this.activeElements, function(activeElement){
2691 
				activeElement.restore(['fillColor']);
2692 
			});
2693 
 
2694 
			helpers.each(this.segments,function(segment){
2695 
				segment.save();
2696 
			});
2697 
			this.render();
2698 
		},
2699 
 
2700 
		removeData: function(atIndex){
2701 
			var indexToDelete = (helpers.isNumber(atIndex)) ? atIndex : this.segments.length-1;
2702 
			this.segments.splice(indexToDelete, 1);
2703 
			this.reflow();
2704 
			this.update();
2705 
		},
2706 
 
2707 
		reflow : function(){
2708 
			helpers.extend(this.SegmentArc.prototype,{
2709 
				x : this.chart.width/2,
2710 
				y : this.chart.height/2
2711 
			});
2712 
			this.outerRadius = (helpers.min([this.chart.width,this.chart.height]) -	this.options.segmentStrokeWidth/2)/2;
2713 
			helpers.each(this.segments, function(segment){
2714 
				segment.update({
2715 
					outerRadius : this.outerRadius,
2716 
					innerRadius : (this.outerRadius/100) * this.options.percentageInnerCutout
2717 
				});
2718 
			}, this);
2719 
		},
2720 
		draw : function(easeDecimal){
2721 
			var animDecimal = (easeDecimal) ? easeDecimal : 1;
2722 
			this.clear();
2723 
			helpers.each(this.segments,function(segment,index){
2724 
				segment.transition({
2725 
					circumference : this.calculateCircumference(segment.value),
2726 
					outerRadius : this.outerRadius,
2727 
					innerRadius : (this.outerRadius/100) * this.options.percentageInnerCutout
2728 
				},animDecimal);
2729 
 
2730 
				segment.endAngle = segment.startAngle + segment.circumference;
2731 
 
2732 
				segment.draw();
2733 
				if (index === 0){
2734 
					segment.startAngle = Math.PI * 1.5;
2735 
				}
2736 
				//Check to see if it's the last segment, if not get the next and update the start angle
2737 
				if (index < this.segments.length-1){
2738 
					this.segments[index+1].startAngle = segment.endAngle;
2739 
				}
2740 
			},this);
2741 
 
2742 
		}
2743 
	});
2744 
 
2745 
	Chart.types.Doughnut.extend({
2746 
		name : "Pie",
2747 
		defaults : helpers.merge(defaultConfig,{percentageInnerCutout : 0})
2748 
	});
2749 
 
2750 
}).call(this);
2751 
 
2752 
(function(){
2753 
	"use strict";
2754 
 
2755 
	var root = this,
2756 
		Chart = root.Chart,
2757 
		helpers = Chart.helpers;
2758 
 
2759 
	var defaultConfig = {
2760 
 
2761 
		///Boolean - Whether grid lines are shown across the chart
2762 
		scaleShowGridLines : true,
2763 
 
2764 
		//String - Colour of the grid lines
2765 
		scaleGridLineColor : "rgba(0,0,0,.05)",
2766 
 
2767 
		//Number - Width of the grid lines
2768 
		scaleGridLineWidth : 1,
2769 
 
2770 
		//Boolean - Whether to show horizontal lines (except X axis)
2771 
		scaleShowHorizontalLines: true,
2772 
 
2773 
		//Boolean - Whether to show vertical lines (except Y axis)
2774 
		scaleShowVerticalLines: true,
2775 
 
2776 
		//Boolean - Whether the line is curved between points
2777 
		bezierCurve : true,
2778 
 
2779 
		//Number - Tension of the bezier curve between points
2780 
		bezierCurveTension : 0.4,
2781 
 
2782 
		//Boolean - Whether to show a dot for each point
2783 
		pointDot : true,
2784 
 
2785 
		//Number - Radius of each point dot in pixels
2786 
		pointDotRadius : 4,
2787 
 
2788 
		//Number - Pixel width of point dot stroke
2789 
		pointDotStrokeWidth : 1,
2790 
 
2791 
		//Number - amount extra to add to the radius to cater for hit detection outside the drawn point
2792 
		pointHitDetectionRadius : 20,
2793 
 
2794 
		//Boolean - Whether to show a stroke for datasets
2795 
		datasetStroke : true,
2796 
 
2797 
		//Number - Pixel width of dataset stroke
2798 
		datasetStrokeWidth : 2,
2799 
 
2800 
		//Boolean - Whether to fill the dataset with a colour
2801 
		datasetFill : true,
2802 
 
2803 
		//String - A legend template
2804 
		legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span class=\"<%=name.toLowerCase()%>-legend-icon\" style=\"background-color:<%=datasets[i].strokeColor%>\"></span><span class=\"<%=name.toLowerCase()%>-legend-text\"><%if(datasets[i].label){%><%=datasets[i].label%><%}%></span></li><%}%></ul>",
2805 
 
2806 
		//Boolean - Whether to horizontally center the label and point dot inside the grid
2807 
		offsetGridLines : false
2808 
 
2809 
	};
2810 
 
2811 
 
2812 
	Chart.Type.extend({
2813 
		name: "Line",
2814 
		defaults : defaultConfig,
2815 
		initialize:  function(data){
2816 
			//Declare the extension of the default point, to cater for the options passed in to the constructor
2817 
			this.PointClass = Chart.Point.extend({
2818 
				offsetGridLines : this.options.offsetGridLines,
2819 
				strokeWidth : this.options.pointDotStrokeWidth,
2820 
				radius : this.options.pointDotRadius,
2821 
				display: this.options.pointDot,
2822 
				hitDetectionRadius : this.options.pointHitDetectionRadius,
2823 
				ctx : this.chart.ctx,
2824 
				inRange : function(mouseX){
2825 
					return (Math.pow(mouseX-this.x, 2) < Math.pow(this.radius + this.hitDetectionRadius,2));
2826 
				}
2827 
			});
2828 
 
2829 
			this.datasets = [];
2830 
 
2831 
			//Set up tooltip events on the chart
2832 
			if (this.options.showTooltips){
2833 
				helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
2834 
					var activePoints = (evt.type !== 'mouseout') ? this.getPointsAtEvent(evt) : [];
2835 
					this.eachPoints(function(point){
2836 
						point.restore(['fillColor', 'strokeColor']);
2837 
					});
2838 
					helpers.each(activePoints, function(activePoint){
2839 
						activePoint.fillColor = activePoint.highlightFill;
2840 
						activePoint.strokeColor = activePoint.highlightStroke;
2841 
					});
2842 
					this.showTooltip(activePoints);
2843 
				});
2844 
			}
2845 
 
2846 
			//Iterate through each of the datasets, and build this into a property of the chart
2847 
			helpers.each(data.datasets,function(dataset){
2848 
 
2849 
				var datasetObject = {
2850 
					label : dataset.label || null,
2851 
					fillColor : dataset.fillColor,
2852 
					strokeColor : dataset.strokeColor,
2853 
					pointColor : dataset.pointColor,
2854 
					pointStrokeColor : dataset.pointStrokeColor,
2855 
					points : []
2856 
				};
2857 
 
2858 
				this.datasets.push(datasetObject);
2859 
 
2860 
 
2861 
				helpers.each(dataset.data,function(dataPoint,index){
2862 
					//Add a new point for each piece of data, passing any required data to draw.
2863 
					datasetObject.points.push(new this.PointClass({
2864 
						value : dataPoint,
2865 
						label : data.labels[index],
2866 
						datasetLabel: dataset.label,
2867 
						strokeColor : dataset.pointStrokeColor,
2868 
						fillColor : dataset.pointColor,
2869 
						highlightFill : dataset.pointHighlightFill || dataset.pointColor,
2870 
						highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
2871 
					}));
2872 
				},this);
2873 
 
2874 
				this.buildScale(data.labels);
2875 
 
2876 
 
2877 
				this.eachPoints(function(point, index){
2878 
					helpers.extend(point, {
2879 
						x: this.scale.calculateX(index),
2880 
						y: this.scale.endPoint
2881 
					});
2882 
					point.save();
2883 
				}, this);
2884 
 
2885 
			},this);
2886 
 
2887 
 
2888 
			this.render();
2889 
		},
2890 
		update : function(){
2891 
			this.scale.update();
2892 
			// Reset any highlight colours before updating.
2893 
			helpers.each(this.activeElements, function(activeElement){
2894 
				activeElement.restore(['fillColor', 'strokeColor']);
2895 
			});
2896 
			this.eachPoints(function(point){
2897 
				point.save();
2898 
			});
2899 
			this.render();
2900 
		},
2901 
		eachPoints : function(callback){
2902 
			helpers.each(this.datasets,function(dataset){
2903 
				helpers.each(dataset.points,callback,this);
2904 
			},this);
2905 
		},
2906 
		getPointsAtEvent : function(e){
2907 
			var pointsArray = [],
2908 
				eventPosition = helpers.getRelativePosition(e);
2909 
			helpers.each(this.datasets,function(dataset){
2910 
				helpers.each(dataset.points,function(point){
2911 
					if (point.inRange(eventPosition.x,eventPosition.y)) pointsArray.push(point);
2912 
				});
2913 
			},this);
2914 
			return pointsArray;
2915 
		},
2916 
		buildScale : function(labels){
2917 
			var self = this;
2918 
 
2919 
			var dataTotal = function(){
2920 
				var values = [];
2921 
				self.eachPoints(function(point){
2922 
					values.push(point.value);
2923 
				});
2924 
 
2925 
				return values;
2926 
			};
2927 
 
2928 
			var scaleOptions = {
2929 
				templateString : this.options.scaleLabel,
2930 
				height : this.chart.height,
2931 
				width : this.chart.width,
2932 
				ctx : this.chart.ctx,
2933 
				textColor : this.options.scaleFontColor,
2934 
				offsetGridLines : this.options.offsetGridLines,
2935 
				fontSize : this.options.scaleFontSize,
2936 
				fontStyle : this.options.scaleFontStyle,
2937 
				fontFamily : this.options.scaleFontFamily,
2938 
				valuesCount : labels.length,
2939 
				beginAtZero : this.options.scaleBeginAtZero,
2940 
				integersOnly : this.options.scaleIntegersOnly,
2941 
				calculateYRange : function(currentHeight){
2942 
					var updatedRanges = helpers.calculateScaleRange(
2943 
						dataTotal(),
2944 
						currentHeight,
2945 
						this.fontSize,
2946 
						this.beginAtZero,
2947 
						this.integersOnly
2948 
					);
2949 
					helpers.extend(this, updatedRanges);
2950 
				},
2951 
				xLabels : labels,
2952 
				font : helpers.fontString(this.options.scaleFontSize, this.options.scaleFontStyle, this.options.scaleFontFamily),
2953 
				lineWidth : this.options.scaleLineWidth,
2954 
				lineColor : this.options.scaleLineColor,
2955 
				showHorizontalLines : this.options.scaleShowHorizontalLines,
2956 
				showVerticalLines : this.options.scaleShowVerticalLines,
2957 
				gridLineWidth : (this.options.scaleShowGridLines) ? this.options.scaleGridLineWidth : 0,
2958 
				gridLineColor : (this.options.scaleShowGridLines) ? this.options.scaleGridLineColor : "rgba(0,0,0,0)",
2959 
				padding: (this.options.showScale) ? 0 : this.options.pointDotRadius + this.options.pointDotStrokeWidth,
2960 
				showLabels : this.options.scaleShowLabels,
2961 
				display : this.options.showScale
2962 
			};
2963 
 
2964 
			if (this.options.scaleOverride){
2965 
				helpers.extend(scaleOptions, {
2966 
					calculateYRange: helpers.noop,
2967 
					steps: this.options.scaleSteps,
2968 
					stepValue: this.options.scaleStepWidth,
2969 
					min: this.options.scaleStartValue,
2970 
					max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
2971 
				});
2972 
			}
2973 
 
2974 
 
2975 
			this.scale = new Chart.Scale(scaleOptions);
2976 
		},
2977 
		addData : function(valuesArray,label){
2978 
			//Map the values array for each of the datasets
2979 
 
2980 
			helpers.each(valuesArray,function(value,datasetIndex){
2981 
				//Add a new point for each piece of data, passing any required data to draw.
2982 
				this.datasets[datasetIndex].points.push(new this.PointClass({
2983 
					value : value,
2984 
					label : label,
2985 
					datasetLabel: this.datasets[datasetIndex].label,
2986 
					x: this.scale.calculateX(this.scale.valuesCount+1),
2987 
					y: this.scale.endPoint,
2988 
					strokeColor : this.datasets[datasetIndex].pointStrokeColor,
2989 
					fillColor : this.datasets[datasetIndex].pointColor
2990 
				}));
2991 
			},this);
2992 
 
2993 
			this.scale.addXLabel(label);
2994 
			//Then re-render the chart.
2995 
			this.update();
2996 
		},
2997 
		removeData : function(){
2998 
			this.scale.removeXLabel();
2999 
			//Then re-render the chart.
3000 
			helpers.each(this.datasets,function(dataset){
3001 
				dataset.points.shift();
3002 
			},this);
3003 
			this.update();
3004 
		},
3005 
		reflow : function(){
3006 
			var newScaleProps = helpers.extend({
3007 
				height : this.chart.height,
3008 
				width : this.chart.width
3009 
			});
3010 
			this.scale.update(newScaleProps);
3011 
		},
3012 
		draw : function(ease){
3013 
			var easingDecimal = ease || 1;
3014 
			this.clear();
3015 
 
3016 
			var ctx = this.chart.ctx;
3017 
 
3018 
			// Some helper methods for getting the next/prev points
3019 
			var hasValue = function(item){
3020 
				return item.value !== null;
3021 
			},
3022 
			nextPoint = function(point, collection, index){
3023 
				return helpers.findNextWhere(collection, hasValue, index) || point;
3024 
			},
3025 
			previousPoint = function(point, collection, index){
3026 
				return helpers.findPreviousWhere(collection, hasValue, index) || point;
3027 
			};
3028 
 
3029 
			if (!this.scale) return;
3030 
			this.scale.draw(easingDecimal);
3031 
 
3032 
 
3033 
			helpers.each(this.datasets,function(dataset){
3034 
				var pointsWithValues = helpers.where(dataset.points, hasValue);
3035 
 
3036 
				//Transition each point first so that the line and point drawing isn't out of sync
3037 
				//We can use this extra loop to calculate the control points of this dataset also in this loop
3038 
 
3039 
				helpers.each(dataset.points, function(point, index){
3040 
					if (point.hasValue()){
3041 
						point.transition({
3042 
							y : this.scale.calculateY(point.value),
3043 
							x : this.scale.calculateX(index)
3044 
						}, easingDecimal);
3045 
					}
3046 
				},this);
3047 
 
3048 
 
3049 
				// Control points need to be calculated in a separate loop, because we need to know the current x/y of the point
3050 
				// This would cause issues when there is no animation, because the y of the next point would be 0, so beziers would be skewed
3051 
				if (this.options.bezierCurve){
3052 
					helpers.each(pointsWithValues, function(point, index){
3053 
						var tension = (index > 0 && index < pointsWithValues.length - 1) ? this.options.bezierCurveTension : 0;
3054 
						point.controlPoints = helpers.splineCurve(
3055 
							previousPoint(point, pointsWithValues, index),
3056 
							point,
3057 
							nextPoint(point, pointsWithValues, index),
3058 
							tension
3059 
						);
3060 
 
3061 
						// Prevent the bezier going outside of the bounds of the graph
3062 
 
3063 
						// Cap puter bezier handles to the upper/lower scale bounds
3064 
						if (point.controlPoints.outer.y > this.scale.endPoint){
3065 
							point.controlPoints.outer.y = this.scale.endPoint;
3066 
						}
3067 
						else if (point.controlPoints.outer.y < this.scale.startPoint){
3068 
							point.controlPoints.outer.y = this.scale.startPoint;
3069 
						}
3070 
 
3071 
						// Cap inner bezier handles to the upper/lower scale bounds
3072 
						if (point.controlPoints.inner.y > this.scale.endPoint){
3073 
							point.controlPoints.inner.y = this.scale.endPoint;
3074 
						}
3075 
						else if (point.controlPoints.inner.y < this.scale.startPoint){
3076 
							point.controlPoints.inner.y = this.scale.startPoint;
3077 
						}
3078 
					},this);
3079 
				}
3080 
 
3081 
 
3082 
				//Draw the line between all the points
3083 
				ctx.lineWidth = this.options.datasetStrokeWidth;
3084 
				ctx.strokeStyle = dataset.strokeColor;
3085 
				ctx.beginPath();
3086 
 
3087 
				helpers.each(pointsWithValues, function(point, index){
3088 
					if (index === 0){
3089 
						ctx.moveTo(point.x, point.y);
3090 
					}
3091 
					else{
3092 
						if(this.options.bezierCurve){
3093 
							var previous = previousPoint(point, pointsWithValues, index);
3094 
 
3095 
							ctx.bezierCurveTo(
3096 
								previous.controlPoints.outer.x,
3097 
								previous.controlPoints.outer.y,
3098 
								point.controlPoints.inner.x,
3099 
								point.controlPoints.inner.y,
3100 
								point.x,
3101 
								point.y
3102 
							);
3103 
						}
3104 
						else{
3105 
							ctx.lineTo(point.x,point.y);
3106 
						}
3107 
					}
3108 
				}, this);
3109 
 
3110 
				if (this.options.datasetStroke) {
3111 
					ctx.stroke();
3112 
				}
3113 
 
3114 
				if (this.options.datasetFill && pointsWithValues.length > 0){
3115 
					//Round off the line by going to the base of the chart, back to the start, then fill.
3116 
					ctx.lineTo(pointsWithValues[pointsWithValues.length - 1].x, this.scale.endPoint);
3117 
					ctx.lineTo(pointsWithValues[0].x, this.scale.endPoint);
3118 
					ctx.fillStyle = dataset.fillColor;
3119 
					ctx.closePath();
3120 
					ctx.fill();
3121 
				}
3122 
 
3123 
				//Now draw the points over the line
3124 
				//A little inefficient double looping, but better than the line
3125 
				//lagging behind the point positions
3126 
				helpers.each(pointsWithValues,function(point){
3127 
					point.draw();
3128 
				});
3129 
			},this);
3130 
		}
3131 
	});
3132 
 
3133 
 
3134 
}).call(this);
3135 
 
3136 
(function(){
3137 
	"use strict";
3138 
 
3139 
	var root = this,
3140 
		Chart = root.Chart,
3141 
		//Cache a local reference to Chart.helpers
3142 
		helpers = Chart.helpers;
3143 
 
3144 
	var defaultConfig = {
3145 
		//Boolean - Show a backdrop to the scale label
3146 
		scaleShowLabelBackdrop : true,
3147 
 
3148 
		//String - The colour of the label backdrop
3149 
		scaleBackdropColor : "rgba(255,255,255,0.75)",
3150 
 
3151 
		// Boolean - Whether the scale should begin at zero
3152 
		scaleBeginAtZero : true,
3153 
 
3154 
		//Number - The backdrop padding above & below the label in pixels
3155 
		scaleBackdropPaddingY : 2,
3156 
 
3157 
		//Number - The backdrop padding to the side of the label in pixels
3158 
		scaleBackdropPaddingX : 2,
3159 
 
3160 
		//Boolean - Show line for each value in the scale
3161 
		scaleShowLine : true,
3162 
 
3163 
		//Boolean - Stroke a line around each segment in the chart
3164 
		segmentShowStroke : true,
3165 
 
3166 
		//String - The colour of the stroke on each segment.
3167 
		segmentStrokeColor : "#fff",
3168 
 
3169 
		//Number - The width of the stroke value in pixels
3170 
		segmentStrokeWidth : 2,
3171 
 
3172 
		//Number - Amount of animation steps
3173 
		animationSteps : 100,
3174 
 
3175 
		//String - Animation easing effect.
3176 
		animationEasing : "easeOutBounce",
3177 
 
3178 
		//Boolean - Whether to animate the rotation of the chart
3179 
		animateRotate : true,
3180 
 
3181 
		//Boolean - Whether to animate scaling the chart from the centre
3182 
		animateScale : false,
3183 
 
3184 
		//String - A legend template
3185 
		legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span class=\"<%=name.toLowerCase()%>-legend-icon\" style=\"background-color:<%=segments[i].fillColor%>\"></span><span class=\"<%=name.toLowerCase()%>-legend-text\"><%if(segments[i].label){%><%=segments[i].label%><%}%></span></li><%}%></ul>"
3186 
	};
3187 
 
3188 
 
3189 
	Chart.Type.extend({
3190 
		//Passing in a name registers this chart in the Chart namespace
3191 
		name: "PolarArea",
3192 
		//Providing a defaults will also register the defaults in the chart namespace
3193 
		defaults : defaultConfig,
3194 
		//Initialize is fired when the chart is initialized - Data is passed in as a parameter
3195 
		//Config is automatically merged by the core of Chart.js, and is available at this.options
3196 
		initialize:  function(data){
3197 
			this.segments = [];
3198 
			//Declare segment class as a chart instance specific class, so it can share props for this instance
3199 
			this.SegmentArc = Chart.Arc.extend({
3200 
				showStroke : this.options.segmentShowStroke,
3201 
				strokeWidth : this.options.segmentStrokeWidth,
3202 
				strokeColor : this.options.segmentStrokeColor,
3203 
				ctx : this.chart.ctx,
3204 
				innerRadius : 0,
3205 
				x : this.chart.width/2,
3206 
				y : this.chart.height/2
3207 
			});
3208 
			this.scale = new Chart.RadialScale({
3209 
				display: this.options.showScale,
3210 
				fontStyle: this.options.scaleFontStyle,
3211 
				fontSize: this.options.scaleFontSize,
3212 
				fontFamily: this.options.scaleFontFamily,
3213 
				fontColor: this.options.scaleFontColor,
3214 
				showLabels: this.options.scaleShowLabels,
3215 
				showLabelBackdrop: this.options.scaleShowLabelBackdrop,
3216 
				backdropColor: this.options.scaleBackdropColor,
3217 
				backdropPaddingY : this.options.scaleBackdropPaddingY,
3218 
				backdropPaddingX: this.options.scaleBackdropPaddingX,
3219 
				lineWidth: (this.options.scaleShowLine) ? this.options.scaleLineWidth : 0,
3220 
				lineColor: this.options.scaleLineColor,
3221 
				lineArc: true,
3222 
				width: this.chart.width,
3223 
				height: this.chart.height,
3224 
				xCenter: this.chart.width/2,
3225 
				yCenter: this.chart.height/2,
3226 
				ctx : this.chart.ctx,
3227 
				templateString: this.options.scaleLabel,
3228 
				valuesCount: data.length
3229 
			});
3230 
 
3231 
			this.updateScaleRange(data);
3232 
 
3233 
			this.scale.update();
3234 
 
3235 
			helpers.each(data,function(segment,index){
3236 
				this.addData(segment,index,true);
3237 
			},this);
3238 
 
3239 
			//Set up tooltip events on the chart
3240 
			if (this.options.showTooltips){
3241 
				helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
3242 
					var activeSegments = (evt.type !== 'mouseout') ? this.getSegmentsAtEvent(evt) : [];
3243 
					helpers.each(this.segments,function(segment){
3244 
						segment.restore(["fillColor"]);
3245 
					});
3246 
					helpers.each(activeSegments,function(activeSegment){
3247 
						activeSegment.fillColor = activeSegment.highlightColor;
3248 
					});
3249 
					this.showTooltip(activeSegments);
3250 
				});
3251 
			}
3252 
 
3253 
			this.render();
3254 
		},
3255 
		getSegmentsAtEvent : function(e){
3256 
			var segmentsArray = [];
3257 
 
3258 
			var location = helpers.getRelativePosition(e);
3259 
 
3260 
			helpers.each(this.segments,function(segment){
3261 
				if (segment.inRange(location.x,location.y)) segmentsArray.push(segment);
3262 
			},this);
3263 
			return segmentsArray;
3264 
		},
3265 
		addData : function(segment, atIndex, silent){
3266 
			var index = atIndex || this.segments.length;
3267 
 
3268 
			this.segments.splice(index, 0, new this.SegmentArc({
3269 
				fillColor: segment.color,
3270 
				highlightColor: segment.highlight || segment.color,
3271 
				label: segment.label,
3272 
				value: segment.value,
3273 
				outerRadius: (this.options.animateScale) ? 0 : this.scale.calculateCenterOffset(segment.value),
3274 
				circumference: (this.options.animateRotate) ? 0 : this.scale.getCircumference(),
3275 
				startAngle: Math.PI * 1.5
3276 
			}));
3277 
			if (!silent){
3278 
				this.reflow();
3279 
				this.update();
3280 
			}
3281 
		},
3282 
		removeData: function(atIndex){
3283 
			var indexToDelete = (helpers.isNumber(atIndex)) ? atIndex : this.segments.length-1;
3284 
			this.segments.splice(indexToDelete, 1);
3285 
			this.reflow();
3286 
			this.update();
3287 
		},
3288 
		calculateTotal: function(data){
3289 
			this.total = 0;
3290 
			helpers.each(data,function(segment){
3291 
				this.total += segment.value;
3292 
			},this);
3293 
			this.scale.valuesCount = this.segments.length;
3294 
		},
3295 
		updateScaleRange: function(datapoints){
3296 
			var valuesArray = [];
3297 
			helpers.each(datapoints,function(segment){
3298 
				valuesArray.push(segment.value);
3299 
			});
3300 
 
3301 
			var scaleSizes = (this.options.scaleOverride) ?
3302 
				{
3303 
					steps: this.options.scaleSteps,
3304 
					stepValue: this.options.scaleStepWidth,
3305 
					min: this.options.scaleStartValue,
3306 
					max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
3307 
				} :
3308 
				helpers.calculateScaleRange(
3309 
					valuesArray,
3310 
					helpers.min([this.chart.width, this.chart.height])/2,
3311 
					this.options.scaleFontSize,
3312 
					this.options.scaleBeginAtZero,
3313 
					this.options.scaleIntegersOnly
3314 
				);
3315 
 
3316 
			helpers.extend(
3317 
				this.scale,
3318 
				scaleSizes,
3319 
				{
3320 
					size: helpers.min([this.chart.width, this.chart.height]),
3321 
					xCenter: this.chart.width/2,
3322 
					yCenter: this.chart.height/2
3323 
				}
3324 
			);
3325 
 
3326 
		},
3327 
		update : function(){
3328 
			this.calculateTotal(this.segments);
3329 
 
3330 
			helpers.each(this.segments,function(segment){
3331 
				segment.save();
3332 
			});
3333 
 
3334 
			this.reflow();
3335 
			this.render();
3336 
		},
3337 
		reflow : function(){
3338 
			helpers.extend(this.SegmentArc.prototype,{
3339 
				x : this.chart.width/2,
3340 
				y : this.chart.height/2
3341 
			});
3342 
			this.updateScaleRange(this.segments);
3343 
			this.scale.update();
3344 
 
3345 
			helpers.extend(this.scale,{
3346 
				xCenter: this.chart.width/2,
3347 
				yCenter: this.chart.height/2
3348 
			});
3349 
 
3350 
			helpers.each(this.segments, function(segment){
3351 
				segment.update({
3352 
					outerRadius : this.scale.calculateCenterOffset(segment.value)
3353 
				});
3354 
			}, this);
3355 
 
3356 
		},
3357 
		draw : function(ease){
3358 
			var easingDecimal = ease || 1;
3359 
			//Clear & draw the canvas
3360 
			this.clear();
3361 
			helpers.each(this.segments,function(segment, index){
3362 
				segment.transition({
3363 
					circumference : this.scale.getCircumference(),
3364 
					outerRadius : this.scale.calculateCenterOffset(segment.value)
3365 
				},easingDecimal);
3366 
 
3367 
				segment.endAngle = segment.startAngle + segment.circumference;
3368 
 
3369 
				// If we've removed the first segment we need to set the first one to
3370 
				// start at the top.
3371 
				if (index === 0){
3372 
					segment.startAngle = Math.PI * 1.5;
3373 
				}
3374 
 
3375 
				//Check to see if it's the last segment, if not get the next and update the start angle
3376 
				if (index < this.segments.length - 1){
3377 
					this.segments[index+1].startAngle = segment.endAngle;
3378 
				}
3379 
				segment.draw();
3380 
			}, this);
3381 
			this.scale.draw();
3382 
		}
3383 
	});
3384 
 
3385 
}).call(this);
3386 
 
3387 
(function(){
3388 
	"use strict";
3389 
 
3390 
	var root = this,
3391 
		Chart = root.Chart,
3392 
		helpers = Chart.helpers;
3393 
 
3394 
 
3395 
 
3396 
	Chart.Type.extend({
3397 
		name: "Radar",
3398 
		defaults:{
3399 
			//Boolean - Whether to show lines for each scale point
3400 
			scaleShowLine : true,
3401 
 
3402 
			//Boolean - Whether we show the angle lines out of the radar
3403 
			angleShowLineOut : true,
3404 
 
3405 
			//Boolean - Whether to show labels on the scale
3406 
			scaleShowLabels : false,
3407 
 
3408 
			// Boolean - Whether the scale should begin at zero
3409 
			scaleBeginAtZero : true,
3410 
 
3411 
			//String - Colour of the angle line
3412 
			angleLineColor : "rgba(0,0,0,.1)",
3413 
 
3414 
			//Number - Pixel width of the angle line
3415 
			angleLineWidth : 1,
3416 
 
3417 
			//Number - Interval at which to draw angle lines ("every Nth point")
3418 
			angleLineInterval: 1,
3419 
 
3420 
			//String - Point label font declaration
3421 
			pointLabelFontFamily : "'Arial'",
3422 
 
3423 
			//String - Point label font weight
3424 
			pointLabelFontStyle : "normal",
3425 
 
3426 
			//Number - Point label font size in pixels
3427 
			pointLabelFontSize : 10,
3428 
 
3429 
			//String - Point label font colour
3430 
			pointLabelFontColor : "#666",
3431 
 
3432 
			//Boolean - Whether to show a dot for each point
3433 
			pointDot : true,
3434 
 
3435 
			//Number - Radius of each point dot in pixels
3436 
			pointDotRadius : 3,
3437 
 
3438 
			//Number - Pixel width of point dot stroke
3439 
			pointDotStrokeWidth : 1,
3440 
 
3441 
			//Number - amount extra to add to the radius to cater for hit detection outside the drawn point
3442 
			pointHitDetectionRadius : 20,
3443 
 
3444 
			//Boolean - Whether to show a stroke for datasets
3445 
			datasetStroke : true,
3446 
 
3447 
			//Number - Pixel width of dataset stroke
3448 
			datasetStrokeWidth : 2,
3449 
 
3450 
			//Boolean - Whether to fill the dataset with a colour
3451 
			datasetFill : true,
3452 
 
3453 
			//String - A legend template
3454 
			legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span class=\"<%=name.toLowerCase()%>-legend-icon\" style=\"background-color:<%=datasets[i].strokeColor%>\"></span><span class=\"<%=name.toLowerCase()%>-legend-text\"><%if(datasets[i].label){%><%=datasets[i].label%><%}%></span></li><%}%></ul>"
3455 
 
3456 
		},
3457 
 
3458 
		initialize: function(data){
3459 
			this.PointClass = Chart.Point.extend({
3460 
				strokeWidth : this.options.pointDotStrokeWidth,
3461 
				radius : this.options.pointDotRadius,
3462 
				display: this.options.pointDot,
3463 
				hitDetectionRadius : this.options.pointHitDetectionRadius,
3464 
				ctx : this.chart.ctx
3465 
			});
3466 
 
3467 
			this.datasets = [];
3468 
 
3469 
			this.buildScale(data);
3470 
 
3471 
			//Set up tooltip events on the chart
3472 
			if (this.options.showTooltips){
3473 
				helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
3474 
					var activePointsCollection = (evt.type !== 'mouseout') ? this.getPointsAtEvent(evt) : [];
3475 
 
3476 
					this.eachPoints(function(point){
3477 
						point.restore(['fillColor', 'strokeColor']);
3478 
					});
3479 
					helpers.each(activePointsCollection, function(activePoint){
3480 
						activePoint.fillColor = activePoint.highlightFill;
3481 
						activePoint.strokeColor = activePoint.highlightStroke;
3482 
					});
3483 
 
3484 
					this.showTooltip(activePointsCollection);
3485 
				});
3486 
			}
3487 
 
3488 
			//Iterate through each of the datasets, and build this into a property of the chart
3489 
			helpers.each(data.datasets,function(dataset){
3490 
 
3491 
				var datasetObject = {
3492 
					label: dataset.label || null,
3493 
					fillColor : dataset.fillColor,
3494 
					strokeColor : dataset.strokeColor,
3495 
					pointColor : dataset.pointColor,
3496 
					pointStrokeColor : dataset.pointStrokeColor,
3497 
					points : []
3498 
				};
3499 
 
3500 
				this.datasets.push(datasetObject);
3501 
 
3502 
				helpers.each(dataset.data,function(dataPoint,index){
3503 
					//Add a new point for each piece of data, passing any required data to draw.
3504 
					var pointPosition;
3505 
					if (!this.scale.animation){
3506 
						pointPosition = this.scale.getPointPosition(index, this.scale.calculateCenterOffset(dataPoint));
3507 
					}
3508 
					datasetObject.points.push(new this.PointClass({
3509 
						value : dataPoint,
3510 
						label : data.labels[index],
3511 
						datasetLabel: dataset.label,
3512 
						x: (this.options.animation) ? this.scale.xCenter : pointPosition.x,
3513 
						y: (this.options.animation) ? this.scale.yCenter : pointPosition.y,
3514 
						strokeColor : dataset.pointStrokeColor,
3515 
						fillColor : dataset.pointColor,
3516 
						highlightFill : dataset.pointHighlightFill || dataset.pointColor,
3517 
						highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
3518 
					}));
3519 
				},this);
3520 
 
3521 
			},this);
3522 
 
3523 
			this.render();
3524 
		},
3525 
		eachPoints : function(callback){
3526 
			helpers.each(this.datasets,function(dataset){
3527 
				helpers.each(dataset.points,callback,this);
3528 
			},this);
3529 
		},
3530 
 
3531 
		getPointsAtEvent : function(evt){
3532 
			var mousePosition = helpers.getRelativePosition(evt),
3533 
				fromCenter = helpers.getAngleFromPoint({
3534 
					x: this.scale.xCenter,
3535 
					y: this.scale.yCenter
3536 
				}, mousePosition);
3537 
 
3538 
			var anglePerIndex = (Math.PI * 2) /this.scale.valuesCount,
3539 
				pointIndex = Math.round((fromCenter.angle - Math.PI * 1.5) / anglePerIndex),
3540 
				activePointsCollection = [];
3541 
 
3542 
			// If we're at the top, make the pointIndex 0 to get the first of the array.
3543 
			if (pointIndex >= this.scale.valuesCount || pointIndex < 0){
3544 
				pointIndex = 0;
3545 
			}
3546 
 
3547 
			if (fromCenter.distance <= this.scale.drawingArea){
3548 
				helpers.each(this.datasets, function(dataset){
3549 
					activePointsCollection.push(dataset.points[pointIndex]);
3550 
				});
3551 
			}
3552 
 
3553 
			return activePointsCollection;
3554 
		},
3555 
 
3556 
		buildScale : function(data){
3557 
			this.scale = new Chart.RadialScale({
3558 
				display: this.options.showScale,
3559 
				fontStyle: this.options.scaleFontStyle,
3560 
				fontSize: this.options.scaleFontSize,
3561 
				fontFamily: this.options.scaleFontFamily,
3562 
				fontColor: this.options.scaleFontColor,
3563 
				showLabels: this.options.scaleShowLabels,
3564 
				showLabelBackdrop: this.options.scaleShowLabelBackdrop,
3565 
				backdropColor: this.options.scaleBackdropColor,
3566 
				backgroundColors: this.options.scaleBackgroundColors,
3567 
				backdropPaddingY : this.options.scaleBackdropPaddingY,
3568 
				backdropPaddingX: this.options.scaleBackdropPaddingX,
3569 
				lineWidth: (this.options.scaleShowLine) ? this.options.scaleLineWidth : 0,
3570 
				lineColor: this.options.scaleLineColor,
3571 
				angleLineColor : this.options.angleLineColor,
3572 
				angleLineWidth : (this.options.angleShowLineOut) ? this.options.angleLineWidth : 0,
3573 
        angleLineInterval: (this.options.angleLineInterval) ? this.options.angleLineInterval : 1,
3574 
				// Point labels at the edge of each line
3575 
				pointLabelFontColor : this.options.pointLabelFontColor,
3576 
				pointLabelFontSize : this.options.pointLabelFontSize,
3577 
				pointLabelFontFamily : this.options.pointLabelFontFamily,
3578 
				pointLabelFontStyle : this.options.pointLabelFontStyle,
3579 
				height : this.chart.height,
3580 
				width: this.chart.width,
3581 
				xCenter: this.chart.width/2,
3582 
				yCenter: this.chart.height/2,
3583 
				ctx : this.chart.ctx,
3584 
				templateString: this.options.scaleLabel,
3585 
				labels: data.labels,
3586 
				valuesCount: data.datasets[0].data.length
3587 
			});
3588 
 
3589 
			this.scale.setScaleSize();
3590 
			this.updateScaleRange(data.datasets);
3591 
			this.scale.buildYLabels();
3592 
		},
3593 
		updateScaleRange: function(datasets){
3594 
			var valuesArray = (function(){
3595 
				var totalDataArray = [];
3596 
				helpers.each(datasets,function(dataset){
3597 
					if (dataset.data){
3598 
						totalDataArray = totalDataArray.concat(dataset.data);
3599 
					}
3600 
					else {
3601 
						helpers.each(dataset.points, function(point){
3602 
							totalDataArray.push(point.value);
3603 
						});
3604 
					}
3605 
				});
3606 
				return totalDataArray;
3607 
			})();
3608 
 
3609 
 
3610 
			var scaleSizes = (this.options.scaleOverride) ?
3611 
				{
3612 
					steps: this.options.scaleSteps,
3613 
					stepValue: this.options.scaleStepWidth,
3614 
					min: this.options.scaleStartValue,
3615 
					max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
3616 
				} :
3617 
				helpers.calculateScaleRange(
3618 
					valuesArray,
3619 
					helpers.min([this.chart.width, this.chart.height])/2,
3620 
					this.options.scaleFontSize,
3621 
					this.options.scaleBeginAtZero,
3622 
					this.options.scaleIntegersOnly
3623 
				);
3624 
 
3625 
			helpers.extend(
3626 
				this.scale,
3627 
				scaleSizes
3628 
			);
3629 
 
3630 
		},
3631 
		addData : function(valuesArray,label){
3632 
			//Map the values array for each of the datasets
3633 
			this.scale.valuesCount++;
3634 
			helpers.each(valuesArray,function(value,datasetIndex){
3635 
				var pointPosition = this.scale.getPointPosition(this.scale.valuesCount, this.scale.calculateCenterOffset(value));
3636 
				this.datasets[datasetIndex].points.push(new this.PointClass({
3637 
					value : value,
3638 
					label : label,
3639 
					datasetLabel: this.datasets[datasetIndex].label,
3640 
					x: pointPosition.x,
3641 
					y: pointPosition.y,
3642 
					strokeColor : this.datasets[datasetIndex].pointStrokeColor,
3643 
					fillColor : this.datasets[datasetIndex].pointColor
3644 
				}));
3645 
			},this);
3646 
 
3647 
			this.scale.labels.push(label);
3648 
 
3649 
			this.reflow();
3650 
 
3651 
			this.update();
3652 
		},
3653 
		removeData : function(){
3654 
			this.scale.valuesCount--;
3655 
			this.scale.labels.shift();
3656 
			helpers.each(this.datasets,function(dataset){
3657 
				dataset.points.shift();
3658 
			},this);
3659 
			this.reflow();
3660 
			this.update();
3661 
		},
3662 
		update : function(){
3663 
			this.eachPoints(function(point){
3664 
				point.save();
3665 
			});
3666 
			this.reflow();
3667 
			this.render();
3668 
		},
3669 
		reflow: function(){
3670 
			helpers.extend(this.scale, {
3671 
				width : this.chart.width,
3672 
				height: this.chart.height,
3673 
				size : helpers.min([this.chart.width, this.chart.height]),
3674 
				xCenter: this.chart.width/2,
3675 
				yCenter: this.chart.height/2
3676 
			});
3677 
			this.updateScaleRange(this.datasets);
3678 
			this.scale.setScaleSize();
3679 
			this.scale.buildYLabels();
3680 
		},
3681 
		draw : function(ease){
3682 
			var easeDecimal = ease || 1,
3683 
				ctx = this.chart.ctx;
3684 
			this.clear();
3685 
			this.scale.draw();
3686 
 
3687 
			helpers.each(this.datasets,function(dataset){
3688 
 
3689 
				//Transition each point first so that the line and point drawing isn't out of sync
3690 
				helpers.each(dataset.points,function(point,index){
3691 
					if (point.hasValue()){
3692 
						point.transition(this.scale.getPointPosition(index, this.scale.calculateCenterOffset(point.value)), easeDecimal);
3693 
					}
3694 
				},this);
3695 
 
3696 
 
3697 
 
3698 
				//Draw the line between all the points
3699 
				ctx.lineWidth = this.options.datasetStrokeWidth;
3700 
				ctx.strokeStyle = dataset.strokeColor;
3701 
				ctx.beginPath();
3702 
				helpers.each(dataset.points,function(point,index){
3703 
					if (index === 0){
3704 
						ctx.moveTo(point.x,point.y);
3705 
					}
3706 
					else{
3707 
						ctx.lineTo(point.x,point.y);
3708 
					}
3709 
				},this);
3710 
				ctx.closePath();
3711 
				ctx.stroke();
3712 
 
3713 
				ctx.fillStyle = dataset.fillColor;
3714 
				if(this.options.datasetFill){
3715 
					ctx.fill();
3716 
				}
3717 
				//Now draw the points over the line
3718 
				//A little inefficient double looping, but better than the line
3719 
				//lagging behind the point positions
3720 
				helpers.each(dataset.points,function(point){
3721 
					if (point.hasValue()){
3722 
						point.draw();
3723 
					}
3724 
				});
3725 
 
3726 
			},this);
3727 
 
3728 
		}
3729 
 
3730 
	});
3731 
 
3732 
 
3733 
 
3734 
 
3735 
 
3736 
}).call(this);