Auto Updates On Gauges

sample image

View model

using System;
using System.Collections.Generic;
using LiveChartsCore;
using LiveChartsCore.Defaults;
using LiveChartsCore.Measure;
using LiveChartsCore.SkiaSharpView;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;

namespace ViewModelsSamples.Pies.Gauge5;

[ObservableObject]
public partial class ViewModel
{
    private readonly Random _random = new();

    public ViewModel()
    {
        ObservableValue1 = new ObservableValue { Value = 50 };
        ObservableValue2 = new ObservableValue { Value = 80 };

        Series = new GaugeBuilder()
            .WithOffsetRadius(5)
            .WithLabelsPosition(PolarLabelsPosition.Start)
            .AddValue(ObservableValue1, "North")
            .AddValue(ObservableValue2, "South")
            .BuildSeries();
    }

    public ObservableValue ObservableValue1 { get; set; }
    public ObservableValue ObservableValue2 { get; set; }
    public IEnumerable<ISeries> Series { get; set; }

    [ICommand]
    public void DoRandomChange()
    {
        // modifying the Value property updates and animates the chart automatically
        ObservableValue1.Value = _random.Next(0, 100);
        ObservableValue2.Value = _random.Next(0, 100);
    }
}

using Eto.Forms;
using LiveChartsCore.SkiaSharpView.Eto;
using ViewModelsSamples.Pies.Gauge5;

namespace EtoFormsSample.Pies.Gauge5;

public class View : Panel
{
    private readonly PieChart pieChart;

    public View()
    {
        var viewModel = new ViewModel();

        pieChart = new PieChart
        {
            Series = viewModel.Series,
            InitialRotation = -90,
            MaxAngle = 270,
            Total = 100,
            LegendPosition = LiveChartsCore.Measure.LegendPosition.Bottom,
        };

        var b1 = new Button { Text = "Update" };
        b1.Click += (object sender, System.EventArgs e) => viewModel.DoRandomChange();

        Content = new DynamicLayout(new StackLayout(b1), pieChart);
    }
}

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