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a=this.chart,b=a.chartWidth,c=a.chartHeight,d=a.seriesGroup||this.group,k=this,e=function(a,b,c,f,d,k,e){a.call(this,c,b,f,d,k,e)};a.isChartSeriesBoosting()&&(k=a,d=a.seriesGroup);var h=k.ctx;k.canvas||(k.canvas=q.createElement("canvas"),k.renderTarget=a.renderer.image("",0,0,b,c).addClass("highcharts-boost-canvas").add(d), k.ctx=h=k.canvas.getContext("2d"),a.inverted&&["moveTo","lineTo","rect","arc"].forEach(function(a){D(h,a,e)}),k.boostCopy=function(){k.renderTarget.attr({href:k.canvas.toDataURL("image/png")})},k.boostClear=function(){h.clearRect(0,0,k.canvas.width,k.canvas.height);k===this&&k.renderTarget.attr({href:""})},k.boostClipRect=a.renderer.clipRect(),k.renderTarget.clip(k.boostClipRect));k.canvas.width!==b&&(k.canvas.width=b);k.canvas.height!==c&&(k.canvas.height=c);k.renderTarget.attr({x:0,y:0,width:b, height:c,style:"pointer-events: none",href:""});k.boostClipRect.attr(a.getBoostClipRect(k));return h},canvasToSVG:function(){this.chart.isChartSeriesBoosting()?this.boostClear&&this.boostClear():(this.boostCopy||this.chart.boostCopy)&&(this.boostCopy||this.chart.boostCopy)()},cvsLineTo:function(a,b,c){a.lineTo(b,c)},renderCanvas:function(){var a=this,b=a.options,c=a.chart,d=this.xAxis,k=this.yAxis,m=(c.options.boost||{}).timeRendering||!1,l=0,q=a.processedXData,x=a.processedYData,g=b.data,u=d.getExtremes(), D=u.min,M=u.max;u=k.getExtremes();var L=u.min,P=u.max,U={},I,aa=!!a.sampling,fa=b.marker&&b.marker.radius,T=this.cvsDrawPoint,z=b.lineWidth?this.cvsLineTo:void 0,B=fa&&1>=fa?this.cvsMarkerSquare:this.cvsMarkerCircle,ba=this.cvsStrokeBatch||1E3,ta=!1!==b.enableMouseTracking,ka;u=b.threshold;var X=k.getThreshold(u),ma=w(u),ha=X,na=this.fill,Y=a.pointArrayMap&&"low,high"===a.pointArrayMap.join(","),ca=!!b.stacking,oa=a.cropStart||0;u=c.options.loading;var ua=a.requireSorting,ia,va=b.connectNulls,wa= 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c=b.plotX,d=b.plotY,e=this.chart.inverted;this.isSeriesBoosting&&e&&(b.plotX=this.yAxis.len-d,b.plotY=this.xAxis.len-c);var f= a.apply(this,Array.prototype.slice.call(arguments,1));this.isSeriesBoosting&&e&&(b.plotX=c,b.plotY=d);return f});d(m,"destroy",function(){var a=this,b=a.chart;b.markerGroup===a.markerGroup&&(a.markerGroup=null);b.hoverPoints&&(b.hoverPoints=b.hoverPoints.filter(function(b){return b.series===a}));b.hoverPoint&&b.hoverPoint.series===a&&(b.hoverPoint=null)});y(m.prototype,"getExtremes",function(a){return this.isSeriesBoosting&&this.hasExtremes&&this.hasExtremes()?{}:a.apply(this,Array.prototype.slice.call(arguments, 1))});["translate","generatePoints","drawTracker","drawPoints","render"].forEach(function(a){function b(b){var c=this.options.stacking&&("translate"===a||"generatePoints"===a);if(!this.isSeriesBoosting||c||!G(this.chart)||"heatmap"===this.type||"treemap"===this.type||!u[this.type]||0===this.options.boostThreshold)b.call(this);else if(this[a+"Canvas"])this[a+"Canvas"]()}y(m.prototype,a,b);"translate"===a&&"column bar arearange columnrange heatmap treemap".split(" ").forEach(function(c){n[c]&&y(n[c].prototype, a,b)})});y(m.prototype,"processData",function(a){function b(a){return c.forceCrop?!1:c.chart.isChartSeriesBoosting()||(a?a.length:0)>=(c.options.boostThreshold||Number.MAX_VALUE)}var c=this,d=this.options.data;G(this.chart)&&u[this.type]?(b(d)&&"heatmap"!==this.type&&"treemap"!==this.type&&!this.options.stacking&&this.hasExtremes&&this.hasExtremes(!0)||(a.apply(this,Array.prototype.slice.call(arguments,1)),d=this.processedXData),(this.isSeriesBoosting=b(d))?(d=void 0,this.options.data&&this.options.data.length&& (d=this.getFirstValidPoint(this.options.data),r(d)||e(d)||h(12,!1,this.chart)),this.enterBoost()):this.exitBoost&&this.exitBoost()):a.apply(this,Array.prototype.slice.call(arguments,1))});d(m,"hide",function(){this.canvas&&this.renderTarget&&(this.ogl&&this.ogl.clear(),this.boostClear())});m.prototype.enterBoost=function(){this.alteredByBoost=[];["allowDG","directTouch","stickyTracking"].forEach(function(a){this.alteredByBoost.push({prop:a,val:this[a],own:Object.hasOwnProperty.call(this,a)})},this); this.directTouch=this.allowDG=!1;this.finishedAnimating=this.stickyTracking=!0;this.labelBySeries&&(this.labelBySeries=this.labelBySeries.destroy())};m.prototype.exitBoost=function(){(this.alteredByBoost||[]).forEach(function(a){a.own?this[a.prop]=a.val:delete this[a.prop]},this);this.boostClear&&this.boostClear()};m.prototype.hasExtremes=function(a){var b=this.options,c=this.xAxis&&this.xAxis.options,d=this.yAxis&&this.yAxis.options,e=this.colorAxis&&this.colorAxis.options;return b.data.length>(b.boostThreshold|| Number.MAX_VALUE)&&r(d.min)&&r(d.max)&&(!a||r(c.min)&&r(c.max))&&(!e||r(e.min)&&r(e.max))};m.prototype.destroyGraphics=function(){var a=this,b=this,c=this.points,d,e;if(c)for(e=0;e