source: Dev/trunk/src/client/dojox/charting/plot2d/Stacked.js @ 513

define(["dojo/_base/declare", "./Default", "./commonStacked"], 
        function(declare, Default, commonStacked){

        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 = commonStacked.collectStats(this.series);
                        return stats; // Object
                },
                
                buildSegments: function(i, indexed){
                        var run = this.series[i],
                                min = indexed?Math.max(0, Math.floor(this._hScaler.bounds.from - 1)):0,
                                max = indexed?Math.min(run.data.length-1, Math.ceil(this._hScaler.bounds.to)):run.data.length-1,
                                rseg = null, segments = [];
                        // split the run data into dense segments (each containing no nulls)
                        // except if interpolates is false in which case ignore null between valid data
                        for(var j = min; j <= max; j++){
                                var value = indexed ? commonStacked.getIndexValue(this.series, i, j) : commonStacked.getValue(this.series, i, run.data[j] ?run.data[j].x: null);
                                if(value[0] != null && (indexed || value[0].y != null)){
                                        if(!rseg){
                                                rseg = [];
                                                segments.push({index: j, rseg: rseg});
                                        }
                                        rseg.push(value[0]);
                                }else{
                                        if(!this.opt.interpolate || indexed){
                                                // we break the line only if not interpolating or if we have indexed data
                                                rseg = null;
                                        }
                                }
                        }
                        return segments;
                }
                
        });
});