MapPie.RotationAngle Property

Gets or sets the angle by which the pie is rotated, relative to its default appearance.

Namespace: DevExpress.Xpf.Map

Assembly: DevExpress.Xpf.Map.v18.2.dll

Declaration

C#

public double RotationAngle { get; set; }

VB.NET

Public Property RotationAngle As Double

Property Value

Type	Description
Double	A Double value.

Example

The MapPie class contains the following properties that allow customizing the appearance.

• MapPie.RotationDirection - allows specifying the rotation direction of pie segments.
• MapPie.RotationAngle - allows specifying the rotation angle of pie segments.
• MapPie.HoleRadiusPercent - allows specifying the hole radius as a percent.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-customize-a-map-pie-appearance-t212871.

MainWindow.xaml

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:sys="clr-namespace:System;assembly=mscorlib"
        xmlns:dxm="http://schemas.devexpress.com/winfx/2008/xaml/map" 
        xmlns:dxe="http://schemas.devexpress.com/winfx/2008/xaml/editors" 
        x:Class="MapPieExample.MainWindow"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <ObjectDataProvider x:Key="rotationDirections" 
                            ObjectType="{x:Type sys:Enum}" MethodName="GetValues">
            <ObjectDataProvider.MethodParameters>
                <x:Type TypeName="dxm:RotationDirection"/>
            </ObjectDataProvider.MethodParameters>
        </ObjectDataProvider>
    </Window.Resources>

    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>

        <dxm:MapControl Grid.Column="0">
            <dxm:MapControl.ScrollButtonsOptions>
                <dxm:ScrollButtonsOptions Visible="False"/>
            </dxm:MapControl.ScrollButtonsOptions>
            <dxm:MapControl.CoordinatesPanelOptions>
                <dxm:CoordinatesPanelOptions Visible="False"/>
            </dxm:MapControl.CoordinatesPanelOptions>
            <dxm:VectorLayer>
                <dxm:VectorLayer.Colorizer>
                    <dxm:KeyColorColorizer>
                        <dxm:KeyColorColorizer.ItemKeyProvider>
                            <dxm:IdItemKeyProvider/>
                        </dxm:KeyColorColorizer.ItemKeyProvider>
                        <dxm:KeyColorColorizer.Colors>
                            <Color A="100" R="100" G="100" B="100"/>
                            <Color A="200" R="200" G="200" B="200"/>
                        </dxm:KeyColorColorizer.Colors>
                    </dxm:KeyColorColorizer>
                </dxm:VectorLayer.Colorizer>
                <dxm:MapItemStorage>
                    <dxm:MapPie Size="100" HoleRadiusPercent="{Binding ElementName=seHoleRadius, Path=Value}"
                                RotationDirection="{Binding ElementName=cbRotationDirection, Path=SelectedValue}"
                                RotationAngle="{Binding ElementName=seRotationAngle, Path=Value}">
                        <dxm:MapPie.Segments>
                            <dxm:PieSegment SegmentId="A" Value="10"/>
                            <dxm:PieSegment SegmentId="B" Value="8"/>
                        </dxm:MapPie.Segments>
                    </dxm:MapPie>
                </dxm:MapItemStorage>
            </dxm:VectorLayer>
            <dxm:MapControl.ScalePanelOptions>
                <dxm:ScalePanelOptions Visible="False"/>
            </dxm:MapControl.ScalePanelOptions>
            <dxm:MapControl.ZoomTrackbarOptions>
                <dxm:ZoomTrackbarOptions Visible="False"/>
            </dxm:MapControl.ZoomTrackbarOptions>
        </dxm:MapControl>

        <GroupBox Grid.Column="1" Header="MapPie settings:" Margin="4">
            <Grid >
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="Auto"/>
                </Grid.RowDefinitions>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="Auto"/>
                    <ColumnDefinition Width="*"/>
                </Grid.ColumnDefinitions>

                <Label Grid.Row="0" Grid.Column="0" Margin="4,4,2,2" Content="Hole Radius (percents):"/>
                <dxe:SpinEdit Name="seHoleRadius" Grid.Row="0" Grid.Column="1" Margin="2,4,4,2"
                          MaxValue="100" MinValue="0" Value="30" />
                <Label Grid.Row="1" Grid.Column="0" Margin="4,2,2,2"  Content="Rotation Direction:"/>
                <ComboBox Name="cbRotationDirection"  Grid.Row="1" Grid.Column="1" Margin="2,2,4,2" 
                      SelectedIndex="0"
                      ItemsSource="{Binding Source={StaticResource rotationDirections}}"/>
                <Label Grid.Row="2" Grid.Column="0" Margin="4,2,2,4" Content="Rotation Angle:"/>
                <dxe:SpinEdit Name="seRotationAngle" Grid.Row="3" Grid.Column="1" Margin="2,2,4,4"
                          MinValue="0" MaxValue="360" Value="0"/>
            </Grid>
        </GroupBox>
    </Grid>
</Window>

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the RotationAngle property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-customize-a-map-pie-appearance-t212871/VB/MapPieExample/MainWindow.xaml#L46

        RotationDirection="{Binding ElementName=cbRotationDirection, Path=SelectedValue}"
        RotationAngle="{Binding ElementName=seRotationAngle, Path=Value}">
<dxm:MapPie.Segments>