The globe camera controller (the default camera controller in all new scenes) allows a user to explore the scene freely by zooming in/out and panning around the globe. The orbit camera controllers fix the camera to look at a target location or geoelement. A primary use case is for following moving objects like cars and planes.
How to use the sample
The application loads with the "Orbit camera around plane" option (i.e. camera will now be fixed to the plane). Choose the "Orbit camera around location" option to rotate and center the scene around the location of the Upheaval Dome crater structure, or choose the "Free pan round the globe" option to go to default free navigation.
How it works
Create an instance of a class extending CameraController: GlobeCameraController, OrbitLocationCameraController, OrbitGeoElementCameraController.
Set the scene view's camera controller with SceneView.CameraController = cameraController.
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// 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 ArcGIS.Samples.Managers;
using Esri.ArcGISRuntime.Geometry;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.Symbology;
using Esri.ArcGISRuntime.UI;
using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using System;
using System.Threading.Tasks;
namespaceArcGIS.WinUI.Samples.ChooseCameraController{
[ArcGIS.Samples.Shared.Attributes.Sample(
name: "Choose camera controller",
category: "SceneView",
description: "Control the behavior of the camera in a scene.",
instructions: "The application loads with the \"Orbit camera around plane\" option (i.e. camera will now be fixed to the plane). Choose the \"Orbit camera around location\" option to rotate and center the scene around the location of the Upheaval Dome crater structure, or choose the \"Free pan round the globe\" option to go to default free navigation.",
tags: new[] { "3D", "camera", "camera controller" })]
[ArcGIS.Samples.Shared.Attributes.OfflineData("681d6f7694644709a7c830ec57a2d72b")]
publicpartialclassChooseCameraController {
// Path for elevation data.privatereadonly Uri _elevationUri = new Uri("http://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer");
// Path for the plane model.privatereadonly Uri _modelUri = new Uri(DataManager.GetDataFolder("681d6f7694644709a7c830ec57a2d72b", "Bristol.dae"));
// Geo element camera controller.private OrbitGeoElementCameraController _orbitPlaneCameraController;
// Location camera controller.private OrbitLocationCameraController _orbitCraterCameraController;
// Globe camera controller.privatereadonly GlobeCameraController _globeCameraController = new GlobeCameraController();
publicChooseCameraController() {
InitializeComponent();
_ = Initialize();
}
privateasync Task Initialize() {
// Create a scene. Scene myScene = new Scene(BasemapStyle.ArcGISImagery);
// Create a surface for elevation data. Surface surface = new Surface();
surface.ElevationSources.Add(new ArcGISTiledElevationSource(_elevationUri));
// Add the surface to the scene. myScene.BaseSurface = surface;
// Create a graphics overlay for the scene. GraphicsOverlay sceneGraphicsOverlay = new GraphicsOverlay()
{
SceneProperties = new LayerSceneProperties(SurfacePlacement.Absolute)
};
MySceneView.GraphicsOverlays.Add(sceneGraphicsOverlay);
// Location at the crater. MapPoint craterLocation = new MapPoint(-109.929589, 38.437304, 1700, SpatialReferences.Wgs84);
// Create the plane symbol and make it 10x larger (to be the right size relative to the scene). ModelSceneSymbol planeSymbol;
try {
planeSymbol = await ModelSceneSymbol.CreateAsync(_modelUri, 10.0);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
awaitnew MessageDialog2("Loading plane model failed. Sample failed to initialize.", "Sample error").ShowAsync();
return;
}
// Create a graphic using the plane symbol. Graphic planeGraphic = new Graphic(new MapPoint(craterLocation.X, craterLocation.Y, 5000.0, SpatialReferences.Wgs84), planeSymbol);
sceneGraphicsOverlay.Graphics.Add(planeGraphic);
// Instantiate a new camera controller which orbits a geo element. _orbitPlaneCameraController = new OrbitGeoElementCameraController(planeGraphic, 300.0)
{
CameraPitchOffset = 30,
CameraHeadingOffset = 150 };
// Instantiate a new camera controller which orbits a location. _orbitCraterCameraController = new OrbitLocationCameraController(craterLocation, 6000.0)
{
CameraPitchOffset = 3,
CameraHeadingOffset = 150 };
// Set the starting camera controller. MySceneView.CameraController = _orbitPlaneCameraController;
// Enable all of the radio buttons. OrbitPlaneButton.IsEnabled = true;
OrbitCraterButton.IsEnabled = true;
FreePanButton.IsEnabled = true;
// Add the scene to the view. MySceneView.Scene = myScene;
}
privatevoidSetting_Checked(object sender, RoutedEventArgs e) {
switch (((RadioButton)sender).Name)
{
casenameof(OrbitPlaneButton):
// Switch to the plane camera controller. MySceneView.CameraController = _orbitPlaneCameraController;
break;
casenameof(OrbitCraterButton):
// Switch to the crater camera controller. MySceneView.CameraController = _orbitCraterCameraController;
break;
casenameof(FreePanButton):
// Switch to a globe camera controller, which is free pan. MySceneView.CameraController = _globeCameraController;
break;
}
}
}
}