MapRotation.xaml.cs

// Copyright 2022 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;

namespace ArcGIS.Samples.MapRotation
{
    [ArcGIS.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 : ContentPage
    {
        public MapRotation()
        {
            InitializeComponent();

            Initialize();
        }

        private void Initialize()
        {
            // Create a new Map instance with the basemap
            Basemap myBasemap = new Basemap(BasemapStyle.ArcGISStreets);
            Map myMap = new Map(myBasemap);

            // Assign the map to the MapView
            MyMapView.Map = myMap;
        }

        private void MySlider_ValueChanged(object sender, ValueChangedEventArgs e)
        {
            // Display the rotation value in the Label formatted nicely with degree symbol.
            MyLabel.Text = $"{MySlider.Value:0}\u00b0";

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