text: define("dojox/charting/plot2d/Stacked", ["dojo/_base/lang", "dojo/_base/declare", "dojo/_base/array", "./Default", "./common", 
  	"dojox/lang/functional", "dojox/lang/functional/reversed", "dojox/lang/functional/sequence"], 
  	function(lang, declare, arr, Default, dc, df, dfr, dfs){
  /*=====
  var Default = dojox.charting.plot2d.Default;
  =====*/
  	var purgeGroup = dfr.lambda("item.purgeGroup()");
  
  	return declare("dojox.charting.plot2d.Stacked", Default, {
  		//	summary:
  		//		Like the default plot, Stacked sets up lines, areas and markers
  		//		in a stacked fashion (values on the y axis added to each other)
  		//		as opposed to a direct one.
  		getSeriesStats: function(){
  			//	summary:
  			//		Calculate the min/max on all attached series in both directions.
  			//	returns: Object
  			//		{hmin, hmax, vmin, vmax} min/max in both directions.
  			var stats = dc.collectStackedStats(this.series);
  			this._maxRunLength = stats.hmax;
  			return stats;
  		},
  		render: function(dim, offsets){
  			//	summary:
  			//		Run the calculations for any axes for this plot.
  			//	dim: Object
  			//		An object in the form of { width, height }
  			//	offsets: Object
  			//		An object of the form { l, r, t, b}.
  			//	returns: dojox.charting.plot2d.Stacked
  			//		A reference to this plot for functional chaining.
  			if(this._maxRunLength <= 0){
  				return this;
  			}
  
  			// stack all values
  			var acc = df.repeat(this._maxRunLength, "-> 0", 0);
  			for(var i = 0; i < this.series.length; ++i){
  				var run = this.series[i];
  				for(var j = 0; j < run.data.length; ++j){
  					var v = run.data[j];
  					if(v !== null){
  						if(isNaN(v)){ v = 0; }
  						acc[j] += v;
  					}
  				}
  			}
  			// draw runs in backwards
  			if(this.zoom && !this.isDataDirty()){
  				return this.performZoom(dim, offsets);
  			}
  			this.resetEvents();
  			this.dirty = this.isDirty();
  			if(this.dirty){
  				arr.forEach(this.series, purgeGroup);
  				this._eventSeries = {};
  				this.cleanGroup();
  				var s = this.group;
  				df.forEachRev(this.series, function(item){ item.cleanGroup(s); });
  			}
  
  			var t = this.chart.theme, events = this.events(),
  				ht = this._hScaler.scaler.getTransformerFromModel(this._hScaler),
  				vt = this._vScaler.scaler.getTransformerFromModel(this._vScaler);
  
  			for(var i = this.series.length - 1; i >= 0; --i){
  				var run = this.series[i];
  				if(!this.dirty && !run.dirty){
  					t.skip();
  					this._reconnectEvents(run.name);
  					continue;
  				}
  				run.cleanGroup();
  				var theme = t.next(this.opt.areas ? "area" : "line", [this.opt, run], true),
  					s = run.group, outline,
  					lpoly = arr.map(acc, function(v, i){
  						return {
  							x: ht(i + 1) + offsets.l,
  							y: dim.height - offsets.b - vt(v)
  						};
  					}, this);
  
  				var lpath = this.opt.tension ? dc.curve(lpoly, this.opt.tension) : "";
  
  				if(this.opt.areas){
  					var apoly = lang.clone(lpoly);
  					if(this.opt.tension){
  						var p=dc.curve(apoly, this.opt.tension);
  						p += " L" + lpoly[lpoly.length - 1].x + "," + (dim.height - offsets.b) +
  							" L" + lpoly[0].x + "," + (dim.height - offsets.b) +
  							" L" + lpoly[0].x + "," + lpoly[0].y;
  						run.dyn.fill = s.createPath(p).setFill(theme.series.fill).getFill();
  					} else {
  						apoly.push({x: lpoly[lpoly.length - 1].x, y: dim.height - offsets.b});
  						apoly.push({x: lpoly[0].x, y: dim.height - offsets.b});
  						apoly.push(lpoly[0]);
  						run.dyn.fill = s.createPolyline(apoly).setFill(theme.series.fill).getFill();
  					}
  				}
  				if(this.opt.lines || this.opt.markers){
  					if(theme.series.outline){
  						outline = dc.makeStroke(theme.series.outline);
  						outline.width = 2 * outline.width + theme.series.stroke.width;
  					}
  				}
  				if(this.opt.markers){
  					run.dyn.marker = theme.symbol;
  				}
  				var frontMarkers, outlineMarkers, shadowMarkers;
  				if(theme.series.shadow && theme.series.stroke){
  					var shadow = theme.series.shadow,
  						spoly = arr.map(lpoly, function(c){
  							return {x: c.x + shadow.dx, y: c.y + shadow.dy};
  						});
  					if(this.opt.lines){
  						if(this.opt.tension){
  							run.dyn.shadow = s.createPath(dc.curve(spoly, this.opt.tension)).setStroke(shadow).getStroke();
  						} else {
  							run.dyn.shadow = s.createPolyline(spoly).setStroke(shadow).getStroke();
  						}
  					}
  					if(this.opt.markers){
  						shadow = theme.marker.shadow;
  						shadowMarkers = arr.map(spoly, function(c){
  							return s.createPath("M" + c.x + " " + c.y + " " + theme.symbol).
  								setStroke(shadow).setFill(shadow.color);
  						}, this);
  					}
  				}
  				if(this.opt.lines){
  					if(outline){
  						if(this.opt.tension){
  							run.dyn.outline = s.createPath(lpath).setStroke(outline).getStroke();
  						} else {
  							run.dyn.outline = s.createPolyline(lpoly).setStroke(outline).getStroke();
  						}
  					}
  					if(this.opt.tension){
  						run.dyn.stroke = s.createPath(lpath).setStroke(theme.series.stroke).getStroke();
  					} else {
  						run.dyn.stroke = s.createPolyline(lpoly).setStroke(theme.series.stroke).getStroke();
  					}
  				}
  				if(this.opt.markers){
  					frontMarkers = new Array(lpoly.length);
  					outlineMarkers = new Array(lpoly.length);
  					outline = null;
  					if(theme.marker.outline){
  						outline = dc.makeStroke(theme.marker.outline);
  						outline.width = 2 * outline.width + (theme.marker.stroke ? theme.marker.stroke.width : 0);
  					}
  					arr.forEach(lpoly, function(c, i){
  						var path = "M" + c.x + " " + c.y + " " + theme.symbol;
  						if(outline){
  							outlineMarkers[i] = s.createPath(path).setStroke(outline);
  						}
  						frontMarkers[i] = s.createPath(path).setStroke(theme.marker.stroke).setFill(theme.marker.fill);
  					}, this);
  					if(events){
  						var eventSeries = new Array(frontMarkers.length);
  						arr.forEach(frontMarkers, function(s, i){
  							var o = {
  								element: "marker",
  								index:   i,
  								run:     run,
  								shape:   s,
  								outline: outlineMarkers[i] || null,
  								shadow:  shadowMarkers && shadowMarkers[i] || null,
  								cx:      lpoly[i].x,
  								cy:      lpoly[i].y,
  								x:       i + 1,
  								y:       run.data[i]
  							};
  							this._connectEvents(o);
  							eventSeries[i] = o;
  						}, this);
  						this._eventSeries[run.name] = eventSeries;
  					}else{
  						delete this._eventSeries[run.name];
  					}
  				}
  				run.dirty = false;
  				// update the accumulator
  				for(var j = 0; j < run.data.length; ++j){
  					var v = run.data[j];
  					if(v !== null){
  						if(isNaN(v)){ v = 0; }
  						acc[j] -= v;
  					}
  				}
  			}
  			this.dirty = false;
  			return this;	//	dojox.charting.plot2d.Stacked
  		}
  	});
  });
  