47 lines
1.9 KiB
Swift
Executable File
47 lines
1.9 KiB
Swift
Executable File
// Copyright 2020 Google LLC. All rights reserved.
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//
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
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// file except in compliance with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software distributed under
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// the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
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// ANY KIND, either express or implied. See the License for the specific language governing
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// permissions and limitations under the License.
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import GoogleMaps
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import UIKit
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final class GroundOverlayViewController: UIViewController {
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override func loadView() {
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let southWest = CLLocationCoordinate2D(latitude: 40.712216, longitude: -74.22655)
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let northEast = CLLocationCoordinate2D(latitude: 40.773941, longitude: -74.12544)
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let overlayBounds = GMSCoordinateBounds(coordinate: southWest, coordinate: northEast)
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// Choose the midpoint of the coordinate to focus the camera on.
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let newark = GMSGeometryInterpolate(southWest, northEast, 0.5)
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let cameraPosition = GMSCameraPosition(target: newark, zoom: 12, bearing: 0, viewingAngle: 45)
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let mapView = GMSMapView(frame: .zero, camera: cameraPosition)
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mapView.delegate = self
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view = mapView
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// Add the ground overlay, centered in Newark, NJ
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let groundOverlay = GMSGroundOverlay()
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// Image from http://www.lib.utexas.edu/maps/historical/newark_nj_1922.jpg
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groundOverlay.icon = UIImage(named: "newark_nj_1922.jpg")
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groundOverlay.isTappable = true
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groundOverlay.position = newark
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groundOverlay.bounds = overlayBounds
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groundOverlay.map = mapView
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}
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}
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extension GroundOverlayViewController: GMSMapViewDelegate {
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func mapView(_ mapView: GMSMapView, didTap overlay: GMSOverlay) {
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guard let groundOverlay = overlay as? GMSGroundOverlay else { return }
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groundOverlay.opacity = Float.random(in: 0.5..<1)
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}
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}
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