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56 lines
1.3 KiB
56 lines
1.3 KiB
using Microsoft.AspNetCore.Components;
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namespace Connected.Components;
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partial class Pie : Chart
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{
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[CascadingParameter] public Chart ChartParent { get; set; }
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private List<SvgPath> _paths = new();
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private List<SvgLegend> _legends = new();
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protected override void OnParametersSet()
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{
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_paths.Clear();
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_legends.Clear();
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double startx, starty, endx, endy;
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var ndata = GetNormalizedData();
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double cumulativeRadians = 0;
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for (var i = 0; i < ndata.Length; i++)
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{
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var data = ndata[i];
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startx = Math.Cos(cumulativeRadians);
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starty = Math.Sin(cumulativeRadians);
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cumulativeRadians += 2 * Math.PI * data;
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endx = Math.Cos(cumulativeRadians);
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endy = Math.Sin(cumulativeRadians);
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var largeArcFlag = data > 0.5 ? 1 : 0;
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var path = new SvgPath()
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{
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Index = i,
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Data = $"M {ToS(startx)} {ToS(starty)} A 1 1 0 {ToS(largeArcFlag)} 1 {ToS(endx)} {ToS(endy)} L 0 0"
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};
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_paths.Add(path);
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}
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var counter = 0;
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foreach (var data in ndata)
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{
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var percent = data * 100;
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var labels = "";
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if (counter < InputLabels.Length)
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{
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labels = InputLabels[counter];
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}
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var legend = new SvgLegend()
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{
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Index = counter,
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Labels = labels,
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Data = ToS(Math.Round(percent, 1))
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};
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_legends.Add(legend);
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counter += 1;
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}
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}
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}
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