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ArcGIS Runtime SDK for .NET

Map rotation

This code sample is available for these platforms:
View Sample on GitHub

Rotate a map.

Image of map rotation

Use case

A user may wish to view the map in an orientation other than north-facing.

How to use the sample

Use the slider to rotate the map.

How it works

  1. Instantiate an Map object.
  2. Set the map in the MapView object.
  3. Use SetViewpointRotationAsync to indicate the rotation angle.

Relevant API

  • Map
  • Compass
  • MapView

Tags

rotate, rotation, viewpoint

Sample Code

<UserControl
    x:Class="ArcGISRuntime.UWP.Samples.MapRotation.MapRotation"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:esriUI="using:Esri.ArcGISRuntime.UI.Controls">
    <Grid>
        <esriUI:MapView x:Name="MyMapView" />
        <Border BorderBrush="Black" BorderThickness="1" Background="White"
                HorizontalAlignment="Right" VerticalAlignment="Top"
                Margin="30" Padding="20" Width="375">
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*" />
                    <ColumnDefinition Width="50" />
                </Grid.ColumnDefinitions>
                <Slider x:Name="MySlider"
                        Grid.Column="0"
                        Minimum="0" Maximum="180" Value="0"
                        ValueChanged="MySlider_ValueChanged" />
                <TextBlock x:Name="MyTextBlock"
                           Text="0°"
                           Margin="5,8,0,0"
                           TextAlignment="Center" FontWeight="SemiBold"
                           Grid.Column="1" />
            </Grid>
        </Border>
    </Grid>
</UserControl>
// Copyright 2018 Esri.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
// You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an 
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific 
// language governing permissions and limitations under the License.

using Esri.ArcGISRuntime.Mapping;
using Windows.UI.Xaml.Controls.Primitives;

namespace ArcGISRuntime.UWP.Samples.MapRotation
{
    [ArcGISRuntime.Samples.Shared.Attributes.Sample(
        name: "Map rotation",
        category: "MapView",
        description: "Rotate a map.",
        instructions: "Use the slider to rotate the map.",
        tags: new[] { "rotate", "rotation", "viewpoint" })]
    public partial class MapRotation
    {
        public MapRotation()
        {
            InitializeComponent();

            Initialize();
        }

        private void Initialize()
        {
            // Assign the map to the MapView
            MyMapView.Map = new Map(Basemap.CreateStreets());
        }

        private void MySlider_ValueChanged(object sender, RangeBaseValueChangedEventArgs e)
        {
            // Display the rotation value in the Label formatted nicely with degree symbol.
            MyTextBlock.Text = $"{MySlider.Value:0}°";

            // Set the MapView rotation to that of the Slider.
            MyMapView.SetViewpointRotationAsync(e.NewValue);
        }
    }
}