121 lines
4.6 KiB
Objective-C
Executable File
121 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/CustomMarkersViewController.h"
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#import <GoogleMaps/GoogleMaps.h>
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static int kMarkerCount = 0;
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// Returns a random value from 0-1.0f.
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static CGFloat randf() {
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return (((float)arc4random() / 0x100000000) * 1.0f);
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}
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@implementation CustomMarkersViewController {
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GMSMapView *_mapView;
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}
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- (void)viewDidLoad {
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[super viewDidLoad];
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GMSCameraPosition *camera =
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[GMSCameraPosition cameraWithLatitude:-37.81969 longitude:144.966085 zoom:4];
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_mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
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[self addDefaultMarkers];
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// Add a button which adds random markers to the map.
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UIBarButtonItem *addButton =
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[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd
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target:self
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action:@selector(didTapAdd)];
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addButton.accessibilityLabel = @"Add Markers";
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UIBarButtonItem *clearButton = [[UIBarButtonItem alloc] initWithTitle:@"Clear Markers"
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style:UIBarButtonItemStylePlain
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target:self
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action:@selector(didTapClear)];
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self.navigationItem.rightBarButtonItems = @[ addButton, clearButton ];
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self.view = _mapView;
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}
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- (void)addDefaultMarkers {
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// Add a custom 'glow' marker around Sydney.
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GMSMarker *sydneyMarker = [[GMSMarker alloc] init];
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sydneyMarker.title = @"Sydney!";
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sydneyMarker.icon = [UIImage imageNamed:@"glow-marker"];
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sydneyMarker.position = CLLocationCoordinate2DMake(-33.8683, 151.2086);
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sydneyMarker.map = _mapView;
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// Add a custom 'arrow' marker pointing to Melbourne.
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GMSMarker *melbourneMarker = [[GMSMarker alloc] init];
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melbourneMarker.title = @"Melbourne!";
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melbourneMarker.icon = [UIImage imageNamed:@"arrow"];
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melbourneMarker.position = CLLocationCoordinate2DMake(-37.81969, 144.966085);
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melbourneMarker.map = _mapView;
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}
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- (void)didTapAdd {
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for (int i = 0; i < 10; ++i) {
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// Add a marker every 0.25 seconds for the next ten markers, randomly
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// within the bounds of the camera as it is at that point.
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double delayInSeconds = (i * 0.25);
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dispatch_time_t popTime =
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dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
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__weak typeof(self) weakSelf = self;
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dispatch_after(popTime, dispatch_get_main_queue(), ^(void) {
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typeof(self) strongSelf = weakSelf;
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if (strongSelf) {
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GMSVisibleRegion region = [strongSelf->_mapView.projection visibleRegion];
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GMSCoordinateBounds *bounds = [[GMSCoordinateBounds alloc] initWithRegion:region];
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[strongSelf addMarkerInBounds:bounds];
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}
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});
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}
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}
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- (void)addMarkerInBounds:(GMSCoordinateBounds *)bounds {
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CLLocationDegrees latitude =
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bounds.southWest.latitude + randf() * (bounds.northEast.latitude - bounds.southWest.latitude);
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// If the visible region crosses the antimeridian (the right-most point is
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// "smaller" than the left-most point), adjust the longitude accordingly.
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BOOL offset = (bounds.northEast.longitude < bounds.southWest.longitude);
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CLLocationDegrees longitude =
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bounds.southWest.longitude +
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randf() * (bounds.northEast.longitude - bounds.southWest.longitude + (offset ? 360 : 0));
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if (longitude > 180.f) {
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longitude -= 360.f;
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}
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UIColor *color = [UIColor colorWithHue:randf() saturation:1.f brightness:1.f alpha:1.0f];
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CLLocationCoordinate2D position = CLLocationCoordinate2DMake(latitude, longitude);
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GMSMarker *marker = [GMSMarker markerWithPosition:position];
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marker.title = [NSString stringWithFormat:@"Marker #%d", ++kMarkerCount];
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marker.appearAnimation = kGMSMarkerAnimationPop;
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marker.icon = [GMSMarker markerImageWithColor:color];
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marker.rotation = (randf() - 0.5f) * 20; // rotate between -10 and +10 degrees
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marker.map = _mapView;
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}
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- (void)didTapClear {
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[_mapView clear];
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[self addDefaultMarkers];
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}
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@end
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