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 sample loads with the default globe camera controller. To rotate and fix the scene around the plane, exit globe mode by choosing the "Orbit camera around plane" option (i.e. camera will now be fixed to the plane). Choose the "Orbit camera around crater" 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 return to default free navigation.
How it works
Create an instance of a class extending AGSCameraController: AGSGlobeCameraController, AGSOrbitLocationCameraController, AGSOrbitGeoElementCameraController.
Set the cameraController property of AGSSceneView.
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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.import UIKit
import ArcGIS
protocolCameraControllerTableViewControllerDelagate: AnyObject{
funcselectedCameraControllerChanged(_tableViewController: CameraControllerTableViewController)}
classCameraControllerTableViewController: UITableViewController{
weakvar delegate: CameraControllerTableViewControllerDelagate?
var cameraControllers = [AGSCameraController]()
var selectedCameraController: AGSCameraController?
overridefuncviewDidAppear(_animated: Bool) {
super.viewDidAppear(animated)
iflet selectedCameraController = selectedCameraController, let selectedRow = cameraControllers.firstIndex(where: { type(of: $0) ==type(of: selectedCameraController) }) {
tableView.selectRow(at: IndexPath(row: selectedRow, section: 0), animated: false, scrollPosition: .none)
}
}
// MARK: - UITableViewDataSourceoverridefuncnumberOfSections(intableView: UITableView) -> Int {
return1 }
overridefunctableView(_tableView: UITableView, numberOfRowsInSectionsection: Int) -> Int {
return cameraControllers.count
}
overridefunctableView(_tableView: UITableView, cellForRowAtindexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = getDescription(of: cameraControllers[indexPath.row])
return cell
}
// MARK: - UITableViewDelegateoverridefunctableView(_tableView: UITableView, didSelectRowAtindexPath: IndexPath) {
selectedCameraController = cameraControllers[indexPath.row]
delegate?.selectedCameraControllerChanged(self)
}
// MARK: - Helper method/// Gets description of the specified camera controller.////// - Parameter cameraController: Camera controller of scene view./// - Returns: A text description of the camera controller.funcgetDescription(ofcameraController: AGSCameraController) -> String {
if cameraController isAGSOrbitGeoElementCameraController {
return"Orbit camera around plane" } elseif cameraController isAGSOrbitLocationCameraController {
return"Orbit camera around crater" } else {
return"Free pan round the globe" }
}
}
