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MapPolylineBase.StartLineCap Property

Specifies start cap settings.

Namespace: DevExpress.Xpf.Map

Assembly: DevExpress.Xpf.Map.v21.2.dll

Declaration

public MapLineCap StartLineCap { get; set; }

Property Value

Type Description
MapLineCap

Contains start cap settings.

Remarks

Display the Default Arrow

Use the StartLineCap property to display a shape at the beginning of a MapPolylineBase descendant. The default cap shape is an arrow. Set the Visible property to true to display the arrow:

Map Polyline and Spline Caps

<dxm:VectorLayer x:Name="vectorLayer">
  <dxm:MapItemStorage>
    <dxm:MapPolyline Stroke="Blue">
      <dxm:MapPolyline.StrokeStyle>
        <dxm:StrokeStyle Thickness="2"/>
      </dxm:MapPolyline.StrokeStyle>
      <dxm:MapPolyline.StartLineCap >
        <dxm:MapLineCap Visible="True" />
      </dxm:MapPolyline.StartLineCap>
      <dxm:MapPolyline.Points>
        <dxm:GeoPoint>-6, -4</dxm:GeoPoint>
        <dxm:GeoPoint>-3, -10</dxm:GeoPoint>
        <dxm:GeoPoint>-6, -20</dxm:GeoPoint>
      </dxm:MapPolyline.Points>
      </dxm:MapPolyline>
      <dxm:MapSpline Stroke="Blue">
        <dxm:MapSpline.StartLineCap>
          <dxm:MapLineCap Visible="True" />
        </dxm:MapSpline.StartLineCap>
        <dxm:MapSpline.StrokeStyle>
          <dxm:StrokeStyle Thickness="2"/>
        </dxm:MapSpline.StrokeStyle>
        <dxm:MapSpline.Points>
          <dxm:GeoPoint>-11, -4</dxm:GeoPoint>
          <dxm:GeoPoint>-8, -10</dxm:GeoPoint>
          <dxm:GeoPoint>-11, -20</dxm:GeoPoint>
        </dxm:MapSpline.Points>
      </dxm:MapSpline>
  </dxm:MapItemStorage>
</dxm:VectorLayer>

Display a Custom Shape

To display a custom shape, set the MapLineCap.Geometry property to the PathGeometry object that defines a cap shape.

Use the MapLineCap.Width and MapLineCap.Length properties to specify dimensions of the default arrow or a custom shape.

The following example defines a custom start cap shape and its dimensions:

<Window.Resources>
  <PathGeometry x:Key="CapShape" Figures="M-0.38,-0.5 L 0.44,-0.05 C 0.44,-0.05 0.5,0 0.44,0.05 
                               L 0.44,0.05 L -0.38,0.5 C -0.38,0.5 -0.44,0.5 -0.41,0.4 L -0.41,0.4 
                               L -0.13,0 L -0.41,-0.4 C -0.41,-0.4 -0.44,-0.475 -0.38,-0.5 Z"/>
</Window.Resources>
<Grid>
  <!--...-->
  <dxm:MapPolyline Stroke="Blue">
    <dxm:MapPolyline.StartLineCap>
      <dxm:MapLineCap Visible="True" Length="18" Width="8" Geometry="{StaticResource CapShape}"/>
    </dxm:MapPolyline.StartLineCap>
    <!--...-->
  </dxm:MapPolyline>
  <dxm:MapSpline Stroke="Blue">
    <dxm:MapSpline.StartLineCap>
      <dxm:MapLineCap Visible="True" Length="10" Width="10" Geometry="{StaticResource CapShape}"/>
    </dxm:MapSpline.StartLineCap>
    <!--...-->
  </dxm:MapSpline>
  <!--...-->
</Grid>

Result:

Map polyline and spline custom caps

See Also