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Scene layer selection

Select features in a scene layer

// 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:
// 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.Data;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.UI.Controls;
using Foundation;
using System;
using System.Collections.Generic;
using System.Linq;
using UIKit;

namespace ArcGISRuntime.Samples.SceneLayerSelection
        "Scene layer selection",
        "This sample demonstrates how to identify geoelements in a scene layer.",
        "Tap/Click on a building in the scene layer to identify it.",
        "Scene, Identify")]
    public class SceneLayerSelection : UIViewController
        // A scene view control to display a scene layer and basemap.
        private SceneView _mySceneView = new SceneView();

        public SceneLayerSelection()
            Title = "Scene layer selection";

        public override void ViewDidLoad()

            // Add the scene view control to the UI.

            // Create the scene and display it in the scene view.

        private void Initialize()
            // Create a new Scene with an imagery basemap.
            Scene scene = new Scene(Basemap.CreateImagery());

            // Add a base surface with elevation data.
            Surface elevationSurface = new Surface();
            Uri elevationService = new Uri("");
            elevationSurface.ElevationSources.Add(new ArcGISTiledElevationSource(elevationService));
            scene.BaseSurface = elevationSurface;

            // Add a scene layer of buildings in Brest, France.
            Uri buildingsService = new Uri("");
            ArcGISSceneLayer buildingsLayer = new ArcGISSceneLayer(buildingsService);

            // Assign the Scene to the SceneView.
            _mySceneView.Scene = scene;

            // Create a camera targeting the buildings in Brest.
            Camera brestCamera = new Camera(48.378, -4.494, 200, 345, 65, 0);

            // Set the viewpoint with the camera.

        private async void SceneViewTapped(object sender, GeoViewInputEventArgs e)
            // Get the scene layer from the scene (first and only operational layer).
            ArcGISSceneLayer sceneLayer = (ArcGISSceneLayer)_mySceneView.Scene.OperationalLayers.First();

            // Clear any existing selection.

            // Identify the layer at the tap point.
            // Use a 10-pixel tolerance around the point and return a maximum of one feature.
            IdentifyLayerResult result = await _mySceneView.IdentifyLayerAsync(sceneLayer, e.Position, 10, false, 1);

            // Get the GeoElements that were identified (will be 0 or 1 element).
            IReadOnlyList<GeoElement> geoElements = result.GeoElements;

            // If a GeoElement was identified, select it in the scene.
            if (geoElements.Any())
                GeoElement geoElement = geoElements.FirstOrDefault();
                if (geoElement != null)
                    // Select the feature to highlight it in the scene view.

        public override void ViewDidLayoutSubviews()
            // Setup the visual frame for the SceneView.
            _mySceneView.Frame = new CoreGraphics.CGRect(0, 0, View.Bounds.Width, View.Bounds.Height);


        private void CreateLayout()
            // Add SceneView to the page.

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