View point cloud data offline

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
// Copyright 2019 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 ArcGISRuntime;
using ArcGISRuntime.Samples.Managers;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.UI.Controls;
using Foundation;
using System;
using UIKit;

namespace ArcGISRuntimeXamarin.Samples.ViewPointCloudDataOffline
{
    [Register("ViewPointCloudDataOffline")]
    [ArcGISRuntime.Samples.Shared.Attributes.Sample(
        name: "View point cloud data offline",
        category: "Data",
        description: "Display local 3D point cloud data.",
        instructions: "The sample starts with a point cloud layer loaded and draped on top of a scene. Pan and zoom to explore the scene and see the detail of the point cloud layer.",
        tags: new[] { "3D", "lidar", "point cloud" })]
    [ArcGISRuntime.Samples.Shared.Attributes.OfflineData("34da965ca51d4c68aa9b3a38edb29e00")]
    public class ViewPointCloudDataOffline : UIViewController
    {
        // Hold references to UI controls.
        private SceneView _mySceneView;

        // Hold the URL to the elevation service.
        private const string ElevationServiceUrl = "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer";

        public ViewPointCloudDataOffline()
        {
            Title = "View point cloud data offline";
        }

        private async void Initialize()
        {
            // Create the scene with basemap.
            _mySceneView.Scene = new Scene(BasemapStyle.ArcGISImageryStandard);

            // Create a surface and add the elevation service to it.
            Surface groundSurface = new Surface();
            groundSurface.ElevationSources.Add(new ArcGISTiledElevationSource(new Uri(ElevationServiceUrl)));

            // Add the surface to the scene.
            _mySceneView.Scene.BaseSurface = groundSurface;

            // Get the path to the local point cloud data.
            string pointCloudPath = DataManager.GetDataFolder("34da965ca51d4c68aa9b3a38edb29e00", "sandiego-north-balboa-pointcloud.slpk");

            // Create the point cloud layer.
            PointCloudLayer balboaPointCloud = new PointCloudLayer(new Uri(pointCloudPath));

            // Add the point cloud to the scene.
            _mySceneView.Scene.OperationalLayers.Add(balboaPointCloud);

            // Wait for the layer to load.
            await balboaPointCloud.LoadAsync();

            // Zoom to the extent of the point cloud.
            await _mySceneView.SetViewpointAsync(new Viewpoint(balboaPointCloud.FullExtent));
        }

        public override void LoadView()
        {
            // Create the views.
            View = new UIView() { BackgroundColor = ApplicationTheme.BackgroundColor };

            _mySceneView = new SceneView();
            _mySceneView.TranslatesAutoresizingMaskIntoConstraints = false;

            // Add the views.
            View.AddSubviews(_mySceneView);

            // Lay out the views.
            NSLayoutConstraint.ActivateConstraints(new[]
            {
                _mySceneView.TopAnchor.ConstraintEqualTo(View.SafeAreaLayoutGuide.TopAnchor),
                _mySceneView.BottomAnchor.ConstraintEqualTo(View.BottomAnchor),
                _mySceneView.LeadingAnchor.ConstraintEqualTo(View.LeadingAnchor),
                _mySceneView.TrailingAnchor.ConstraintEqualTo(View.TrailingAnchor)
            });
        }

        public override void ViewDidLoad()
        {
            base.ViewDidLoad();
            Initialize();
        }
    }
}