diff options
Diffstat (limited to 'platform/ios/app/MBXViewController.m')
| -rw-r--r-- | platform/ios/app/MBXViewController.m | 71 |
1 files changed, 70 insertions, 1 deletions
diff --git a/platform/ios/app/MBXViewController.m b/platform/ios/app/MBXViewController.m index 63ca0ea1f6..a763e99d55 100644 --- a/platform/ios/app/MBXViewController.m +++ b/platform/ios/app/MBXViewController.m @@ -72,6 +72,7 @@ typedef NS_ENUM(NSInteger, MBXSettingsRuntimeStylingRows) { MBXSettingsRuntimeStylingCountryLabels, MBXSettingsRuntimeStylingRouteLine, MBXSettingsRuntimeStylingDDSPolygon, + MBXSettingsRuntimeStylingCustomLatLonGrid, }; typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) { @@ -105,7 +106,8 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) { @interface MBXViewController () <UITableViewDelegate, UITableViewDataSource, - MGLMapViewDelegate> + MGLMapViewDelegate, + MGLComputedShapeSourceDataSource> @property (nonatomic) IBOutlet MGLMapView *mapView; @@ -342,6 +344,7 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) { [NSString stringWithFormat:@"Label Countries in %@", (_usingLocaleBasedCountryLabels ? @"Local Language" : [[NSLocale currentLocale] displayNameForKey:NSLocaleIdentifier value:[self bestLanguageForUser]])], @"Add Route Line", @"Dynamically Style Polygon", + @"Add Custom Lat/Lon Grid", ]]; break; case MBXSettingsMiscellaneous: @@ -581,6 +584,9 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) { case MBXSettingsRuntimeStylingDDSPolygon: [self stylePolygonWithDDS]; break; + case MBXSettingsRuntimeStylingCustomLatLonGrid: + [self addLatLonGrid]; + break; default: NSAssert(NO, @"All runtime styling setting rows should be implemented"); break; @@ -1330,6 +1336,21 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) { [self.mapView.style addLayer:fillStyleLayer]; } +- (void)addLatLonGrid +{ + MGLComputedShapeSource *source = [[MGLComputedShapeSource alloc] initWithIdentifier:@"latlon" + options:@{MGLShapeSourceOptionMaximumZoomLevel:@14}]; + source.dataSource = self; + [self.mapView.style addSource:source]; + MGLLineStyleLayer *lineLayer = [[MGLLineStyleLayer alloc] initWithIdentifier:@"latlonlines" + source:source]; + [self.mapView.style addLayer:lineLayer]; + MGLSymbolStyleLayer *labelLayer = [[MGLSymbolStyleLayer alloc] initWithIdentifier:@"latlonlabels" + source:source]; + labelLayer.text = [MGLStyleValue valueWithRawValue:@"{value}"]; + [self.mapView.style addLayer:labelLayer]; +} + - (void)styleLabelLanguageForLayersNamed:(NSArray<NSString *> *)layers { _usingLocaleBasedCountryLabels = !_usingLocaleBasedCountryLabels; @@ -1811,4 +1832,52 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) { } } +#pragma mark - MGLComputedShapeSourceDataSource + +- (NSArray<id <MGLFeature>>*)featuresInCoordinateBounds:(MGLCoordinateBounds)bounds zoomLevel:(NSUInteger)zoom { + double gridSpacing; + if(zoom >= 13) { + gridSpacing = 0.01; + } else if(zoom >= 11) { + gridSpacing = 0.05; + } else if(zoom == 10) { + gridSpacing = .1; + } else if(zoom == 9) { + gridSpacing = 0.25; + } else if(zoom == 8) { + gridSpacing = 0.5; + } else if (zoom >= 6) { + gridSpacing = 1; + } else if(zoom == 5) { + gridSpacing = 2; + } else if(zoom >= 4) { + gridSpacing = 5; + } else if(zoom == 2) { + gridSpacing = 10; + } else { + gridSpacing = 20; + } + + NSMutableArray <id <MGLFeature>> * features = [NSMutableArray array]; + CLLocationCoordinate2D coords[2]; + + for (double y = ceil(bounds.ne.latitude / gridSpacing) * gridSpacing; y >= floor(bounds.sw.latitude / gridSpacing) * gridSpacing; y -= gridSpacing) { + coords[0] = CLLocationCoordinate2DMake(y, bounds.sw.longitude); + coords[1] = CLLocationCoordinate2DMake(y, bounds.ne.longitude); + MGLPolylineFeature *feature = [MGLPolylineFeature polylineWithCoordinates:coords count:2]; + feature.attributes = @{@"value": @(y)}; + [features addObject:feature]; + } + + for (double x = floor(bounds.sw.longitude / gridSpacing) * gridSpacing; x <= ceil(bounds.ne.longitude / gridSpacing) * gridSpacing; x += gridSpacing) { + coords[0] = CLLocationCoordinate2DMake(bounds.sw.latitude, x); + coords[1] = CLLocationCoordinate2DMake(bounds.ne.latitude, x); + MGLPolylineFeature *feature = [MGLPolylineFeature polylineWithCoordinates:coords count:2]; + feature.attributes = @{@"value": @(x)}; + [features addObject:feature]; + } + + return features; +} + @end |