How to design a directional compass using .NET MAUI Radial Gauge?
This article describes how to create a directional compass using the Syncfusion® .NET MAUI Radial Gauge control.
Step 1: Set the StartAngle and EndAngle of the RadialAxis to 320 to position the North direction as 0 and accommodate a full circular axis.
XAML
<gauge:SfRadialGauge> <gauge:SfRadialGauge.Axes> <gauge:RadialAxis StartAngle="320" EndAngle="320"> </gauge:RadialAxis> </gauge:SfRadialGauge.Axes> </gauge:SfRadialGauge>
Step 2: Set the Minimum and Maximum angles of the radial axis to 0 and 360, respectively, and the Interval to 30 to display eight direction values in the radial axis.
XAML
<gauge:SfRadialGauge> <gauge:SfRadialGauge.Axes> <gauge:RadialAxis Minimum="0" Maximum="360" Interval="30" … > … </gauge:RadialAxis> </gauge:SfRadialGauge.Axes> </gauge:SfRadialGauge>
Step 3: To customize the major and minor ticks, you can use the MajorTickStyle and MinorTickStyle as shown in the following code sample.
XAML
<gauge:RadialAxis.MinorTickStyle> <gauge:RadialTickStyle LengthUnit="Factor" Length="0.12" /> </gauge:RadialAxis.MinorTickStyle> <gauge:RadialAxis.MajorTickStyle> <gauge:RadialTickStyle StrokeThickness="2" … /> </gauge:RadialAxis.MajorTickStyle>
Step 4: Add two Needle Pointers to divide the gauge into four parts: north, east, south, and west.
XAML
<gauge:RadialAxis.Pointers> … <gauge:NeedlePointer Value="310" NeedleLengthUnit="Factor" NeedleLength="0.9" NeedleStartWidth="1" NeedleEndWidth="1" NeedleFill="#FFC4C4C4" KnobRadius="0" TailLengthUnit="Factor" TailLength="0.9" TailWidth="1" TailFill="#FFC4C4C4"> </gauge:NeedlePointer> <gauge:NeedlePointer Value="221" … > </gauge:NeedlePointer> </gauge:RadialAxis.Pointers>
Step 5: To denote the directions, use Gauge Annotations as shown in the following code sample.
XAML
<gauge:RadialAxis.Annotations> <gauge:GaugeAnnotation DirectionValue="230" PositionFactor="0.5"> <gauge:GaugeAnnotation.Content> <Label Text="W" FontAttributes="Bold" FontSize="18" TextColor="Black" /> </gauge:GaugeAnnotation.Content> </gauge:GaugeAnnotation> <gauge:GaugeAnnotation DirectionValue="310" …> … </gauge:GaugeAnnotation> <gauge:GaugeAnnotation DirectionValue="129"…> … </gauge:GaugeAnnotation> <gauge:GaugeAnnotation DirectionValue="50" …> … </gauge:GaugeAnnotation> </gauge:RadialAxis.Annotations>
Step 6: Add a shape pointer to indicate the current direction.
XAML
<gauge:RadialAxis.Pointers> <gauge:ShapePointer Value="90" ShapeType="Triangle" /> … </gauge:RadialAxis.Pointers>
Output
Download the complete sample on GitHub.
Conclusion
I hope you enjoyed learning how to design a directional compass using the .NET MAUI Radial Gauge.
You can refer to our .NET MAUI Radial Gauge feature tour page to learn about its other groundbreaking feature representations. Explore our .NET MAUI Radial Gauge documentation to understand how to create and manipulate data.
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