149 lines
4.6 KiB
Objective-C
Executable File
149 lines
4.6 KiB
Objective-C
Executable File
/*
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* Copyright 2016 Google Inc. 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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*/
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#import "GoogleMapsDemos/Samples/MarkerLayerViewController.h"
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#import <GoogleMaps/GoogleMaps.h>
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@interface CoordsList : NSObject
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@property(nonatomic, readonly, copy) GMSPath *path;
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@property(nonatomic, readonly) NSUInteger target;
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- (id)initWithPath:(GMSPath *)path;
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- (CLLocationCoordinate2D)next;
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@end
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@implementation CoordsList
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- (id)initWithPath:(GMSPath *)path {
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if ((self = [super init])) {
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_path = [path copy];
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_target = 0;
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}
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return self;
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}
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- (CLLocationCoordinate2D)next {
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++_target;
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if (_target == _path.count) {
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_target = 0;
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}
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return [_path coordinateAtIndex:_target];
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}
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@end
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@implementation MarkerLayerViewController {
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GMSMapView *_mapView;
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GMSMarker *_fadedMarker;
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}
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- (void)viewDidLoad {
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[super viewDidLoad];
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_mapView = [[GMSMapView alloc] init];
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_mapView.camera = [GMSCameraPosition cameraWithLatitude:50.6042 longitude:3.9599 zoom:5];
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_mapView.delegate = self;
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self.view = _mapView;
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GMSMutablePath *coords;
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GMSMarker *marker;
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// Create a plane that flies to several airports around western Europe.
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coords = [GMSMutablePath path];
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[coords addLatitude:52.310683 longitude:4.765121];
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[coords addLatitude:51.471386 longitude:-0.457148];
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[coords addLatitude:49.01378 longitude:2.5542943];
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[coords addLatitude:50.036194 longitude:8.554519];
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marker = [GMSMarker markerWithPosition:[coords coordinateAtIndex:0]];
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marker.icon = [UIImage imageNamed:@"aeroplane"];
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marker.groundAnchor = CGPointMake(0.5f, 0.5f);
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marker.flat = YES;
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marker.map = _mapView;
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marker.userData = [[CoordsList alloc] initWithPath:coords];
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[self animateToNextCoord:marker];
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// Create a boat that moves around the Baltic Sea.
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coords = [GMSMutablePath path];
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[coords addLatitude:57.598335 longitude:11.290512];
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[coords addLatitude:55.665193 longitude:10.741196];
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[coords addLatitude:55.065787 longitude:11.083488];
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[coords addLatitude:54.699234 longitude:10.863762];
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[coords addLatitude:54.482805 longitude:12.061272];
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[coords addLatitude:55.819802 longitude:16.148186]; // final point
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[coords addLatitude:54.927142 longitude:16.455803]; // final point
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[coords addLatitude:54.482805 longitude:12.061272]; // and back again
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[coords addLatitude:54.699234 longitude:10.863762];
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[coords addLatitude:55.065787 longitude:11.083488];
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[coords addLatitude:55.665193 longitude:10.741196];
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marker = [GMSMarker markerWithPosition:[coords coordinateAtIndex:0]];
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marker.icon = [UIImage imageNamed:@"boat"];
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marker.map = _mapView;
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marker.userData = [[CoordsList alloc] initWithPath:coords];
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[self animateToNextCoord:marker];
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}
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- (void)animateToNextCoord:(GMSMarker *)marker {
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CoordsList *coords = marker.userData;
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CLLocationCoordinate2D coord = [coords next];
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CLLocationCoordinate2D previous = marker.position;
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CLLocationDirection heading = GMSGeometryHeading(previous, coord);
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CLLocationDistance distance = GMSGeometryDistance(previous, coord);
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// Use CATransaction to set a custom duration for this animation. By default, changes to the
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// position are already animated, but with a very short default duration. When the animation is
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// complete, trigger another animation step.
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[CATransaction begin];
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[CATransaction setAnimationDuration:(distance / (50 * 1000))]; // custom duration, 50km/sec
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__weak MarkerLayerViewController *weakSelf = self;
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[CATransaction setCompletionBlock:^{
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[weakSelf animateToNextCoord:marker];
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}];
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marker.position = coord;
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[CATransaction commit];
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// If this marker is flat, implicitly trigger a change in rotation, which will finish quickly.
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if (marker.flat) {
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marker.rotation = heading;
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}
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}
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- (void)fadeMarker:(GMSMarker *)marker {
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_fadedMarker.opacity = 1.0f; // reset previous faded marker
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// Fade this new marker.
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_fadedMarker = marker;
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_fadedMarker.opacity = 0.5f;
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}
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#pragma mark - GMSMapViewDelegate
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- (BOOL)mapView:(GMSMapView *)mapView didTapMarker:(GMSMarker *)marker {
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[self fadeMarker:marker];
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return YES;
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}
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- (void)mapView:(GMSMapView *)mapView didTapAtCoordinate:(CLLocationCoordinate2D)coordinate {
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[self fadeMarker:nil];
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}
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@end
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