diff --git a/src/Chart.PolarArea.js b/src/Chart.PolarArea.js index ae4b72363..f0ceff750 100644 --- a/src/Chart.PolarArea.js +++ b/src/Chart.PolarArea.js @@ -121,6 +121,14 @@ _options: this.options, }, this); + // Fit the scale before we animate + this.updateScaleRange(); + this.scale.calculateRange(); + Chart.scaleService.fitScalesForChart(this, this.chart.width, this.chart.height); + + // so that we animate nicely + this.resetElements(); + // Update the chart with the latest data. this.update(); @@ -132,6 +140,39 @@ yCenter: this.chart.height / 2 }); }, + resetElements: function() { + var circumference = 1 / this.data.datasets[0].data.length * 2; + + // Map new data to data points + helpers.each(this.data.datasets[0].metaData, function(slice, index) { + + var value = this.data.datasets[0].data[index]; + + var startAngle = Math.PI * 1.5 + (Math.PI * circumference) * index; + var endAngle = startAngle + (circumference * Math.PI); + + helpers.extend(slice, { + _index: index, + _model: { + x: this.chart.width / 2, + y: this.chart.height / 2, + innerRadius: 0, + outerRadius: 0, + startAngle: Math.PI * 1.5, + endAngle: Math.PI * 1.5, + + backgroundColor: slice.custom && slice.custom.backgroundColor ? slice.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.data.datasets[0].backgroundColor, index, this.options.elements.slice.backgroundColor), + hoverBackgroundColor: slice.custom && slice.custom.hoverBackgroundColor ? slice.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(this.data.datasets[0].hoverBackgroundColor, index, this.options.elements.slice.hoverBackgroundColor), + borderWidth: slice.custom && slice.custom.borderWidth ? slice.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.data.datasets[0].borderWidth, index, this.options.elements.slice.borderWidth), + borderColor: slice.custom && slice.custom.borderColor ? slice.custom.borderColor : helpers.getValueAtIndexOrDefault(this.data.datasets[0].borderColor, index, this.options.elements.slice.borderColor), + + label: helpers.getValueAtIndexOrDefault(this.data.datasets[0].labels, index, this.data.datasets[0].labels[index]) + }, + }); + + slice.pivot(); + }, this); + }, update: function() { this.updateScaleRange();