Line Geometries

MyGeometry.cs

using LiveChartsCore.Drawing; using LiveChartsCore.SkiaSharpView.Drawing;

namespace ViewModelsSamples.Lines.Custom;

public class MyGeometry : BoundedDrawnGeometry, IDrawnElement { public void Draw(SkiaSharpDrawingContext context) { var paint = context.ActiveSkiaPaint; var canvas = context.Canvas;

    canvas.DrawRect(X, Y, Width, Height, paint);
    canvas.DrawLine(X, Y, X + Width, Y + Height, paint);
    canvas.DrawLine(X + Width, Y, X, Y + Height, paint);
}

}

Code behind```

using System.Windows.Forms; using LiveChartsCore.SkiaSharpView.WinForms; using LiveChartsCore.SkiaSharpView; using LiveChartsCore; using LiveChartsCore.SkiaSharpView.Drawing.Geometries; using LiveChartsCore.SkiaSharpView.Painting; using SkiaSharp; using ViewModelsSamples.Lines.Custom; using LiveChartsCore.Drawing;

namespace WinFormsSample.Lines.Custom;

public partial class View : UserControl { public View() { Size = new System.Drawing.Size(50, 50);

    var values1 = new double[] { 2, 1, 4, 2, 2, -5, -2 };
    var values2 = new double[] { 3, 3, -3, -2, -4, -3, -1 };
    var values3 = new double[] { -2, 2, 1, 3, -1, 4, 3 };
    var values4 = new double[] { 4, 5, 2, 4, 3, 2, 1 };
    var pinPath = SVGPoints.Pin;

    var series = new ISeries[]
    {
        new LineSeries<double>
        {
            Values = values1,
            Fill = null,
            GeometrySize = 20
        },

        // the second type argument is the geometry type
        // there are many built-in geometries available at the
        // LiveChartsCore.SkiaSharpView.Drawing.Geometries namespace.
        new LineSeries<double, StarGeometry>
        {
            Values = values2,
            Fill = null,
            GeometrySize = 20
        },

        // the variable SVG path geometry allows you to
        // change the SVG path at runtime, this has a performance penalty.
        new LineSeries<double, VariableSVGPathGeometry>
        {
            Values = values3,
            Fill = null,
            GeometrySize = 20,
            GeometrySvg = pinPath
        },

        // finally, you can create your own custom geometry
        // using skiasharp.
        new LineSeries<double, MyGeometry>
        {
            Values = values4,
            Fill = null,
            GeometrySize = 20
        }
    };

    var cartesianChart = new CartesianChart
    {
        Series = series,
        Location = new System.Drawing.Point(0, 0),
        Size = new System.Drawing.Size(50, 50),
        Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top | AnchorStyles.Bottom
    };

    Controls.Add(cartesianChart);
}

}

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<span style="opacity: 0.7"> Related articles: </span>


<div>
    <a href="https://livecharts.dev/docs/winforms/2.0.0/CartesianChart.Cartesian%20chart%20control">
        <b>- Cartesian chart control</b>
    </a>
</div>

<div>
    <a href="https://livecharts.dev/docs/winforms/2.0.0/CartesianChart.Line%20Series%20properties">
        <b>- Line series properties</b>
    </a>
</div>




<div id="edit-this-article-source">
    ~/samples/lines/custom/template.md
</div>