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Plumbed camera options all the way through to MGLMapView. Added a method that lets you specify a direction in addition to center point and zoom level. Added Map::jumpTo() for parity with mapbox-gl-js. Replaced usage of Map::setLatLng() and Map::setLatLngZoom() with Map::jumpTo() or Map::easeTo() within MGLMapView. Replaced MGLMapView.pitch with MGLMapCamera for setting all supported degrees of freedom simultaneously. Simultaneously move and rotate with course. Support customizable timing functions on iOS. iosapp now persists an archived MGLMapCamera instead of separate viewpoint properties and also synchronizes user defaults on termination. This change implements persistence entirely in Objective-C, eliminating the use of the Objective-C++ implementation. Fixes mapbox#1643, fixes mapbox#1834. Ref mapbox#1581.
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Original file line number | Diff line number | Diff line change |
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#import "Mapbox.h" | ||
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#pragma once | ||
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NS_ASSUME_NONNULL_BEGIN | ||
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/** An `MGLMapCamera` object represents a viewpoint from which the user observes some point on an `MGLMapView`. */ | ||
@interface MGLMapCamera : NSObject <NSSecureCoding, NSCopying> | ||
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/** Coordinate at the center of the map view. */ | ||
@property (nonatomic) CLLocationCoordinate2D centerCoordinate; | ||
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/** Heading measured in degrees clockwise from true north. */ | ||
@property (nonatomic) CLLocationDirection heading; | ||
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/** Pitch toward the horizon measured in degrees, with 0 degrees resulting in a two-dimensional map. */ | ||
@property (nonatomic) CGFloat pitch; | ||
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/** Meters above ground level. */ | ||
@property (nonatomic) CLLocationDistance altitude; | ||
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/** Returns a new camera with all properties set to 0. */ | ||
+ (instancetype)camera; | ||
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+ (instancetype)cameraLookingAtCenterCoordinate:(CLLocationCoordinate2D)centerCoordinate | ||
fromEyeCoordinate:(CLLocationCoordinate2D)eyeCoordinate | ||
eyeAltitude:(CLLocationDistance)eyeAltitude; | ||
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+ (instancetype)cameraLookingAtCenterCoordinate:(CLLocationCoordinate2D)centerCoordinate | ||
fromDistance:(CLLocationDistance)distance | ||
pitch:(CGFloat)pitch | ||
heading:(CLLocationDirection)heading; | ||
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@end | ||
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NS_ASSUME_NONNULL_END |
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Original file line number | Diff line number | Diff line change |
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#ifndef MBGL_MAP_CAMERA | ||
#define MBGL_MAP_CAMERA | ||
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#include <mbgl/util/geo.hpp> | ||
#include <mbgl/util/optional.hpp> | ||
#include <mbgl/util/chrono.hpp> | ||
#include <mbgl/util/unitbezier.hpp> | ||
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namespace mbgl { | ||
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struct CameraOptions { | ||
mapbox::util::optional<LatLng> center; | ||
mapbox::util::optional<double> zoom; | ||
mapbox::util::optional<double> angle; | ||
mapbox::util::optional<double> pitch; | ||
mapbox::util::optional<Duration> duration; | ||
mapbox::util::optional<mbgl::util::UnitBezier> easing; | ||
}; | ||
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} | ||
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#endif /* MBGL_MAP_CAMERA */ |
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Original file line number | Diff line number | Diff line change |
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#import "MGLMapCamera.h" | ||
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#include <mbgl/util/projection.hpp> | ||
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@implementation MGLMapCamera | ||
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+ (BOOL)supportsSecureCoding | ||
{ | ||
return YES; | ||
} | ||
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+ (instancetype)camera | ||
{ | ||
return [[self alloc] init]; | ||
} | ||
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+ (instancetype)cameraLookingAtCenterCoordinate:(CLLocationCoordinate2D)centerCoordinate | ||
fromEyeCoordinate:(CLLocationCoordinate2D)eyeCoordinate | ||
eyeAltitude:(CLLocationDistance)eyeAltitude | ||
{ | ||
mbgl::LatLng centerLatLng = mbgl::LatLng(centerCoordinate.latitude, centerCoordinate.longitude); | ||
mbgl::LatLng eyeLatLng = mbgl::LatLng(eyeCoordinate.latitude, eyeCoordinate.longitude); | ||
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mbgl::ProjectedMeters centerMeters = mbgl::Projection::projectedMetersForLatLng(centerLatLng); | ||
mbgl::ProjectedMeters eyeMeters = mbgl::Projection::projectedMetersForLatLng(eyeLatLng); | ||
CLLocationDirection heading = std::atan((centerMeters.northing - eyeMeters.northing) / | ||
(centerMeters.easting - eyeMeters.easting)); | ||
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double groundDistance = std::hypot(centerMeters.northing - eyeMeters.northing, | ||
centerMeters.easting - eyeMeters.easting); | ||
CGFloat pitch = std::atan(eyeAltitude / groundDistance); | ||
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return [[self alloc] initWithCenterCoordinate:centerCoordinate | ||
altitude:eyeAltitude | ||
pitch:pitch | ||
heading:heading]; | ||
} | ||
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+ (instancetype)cameraLookingAtCenterCoordinate:(CLLocationCoordinate2D)centerCoordinate | ||
fromDistance:(CLLocationDistance)distance | ||
pitch:(CGFloat)pitch | ||
heading:(CLLocationDirection)heading | ||
{ | ||
return [[self alloc] initWithCenterCoordinate:centerCoordinate | ||
altitude:distance | ||
pitch:(CGFloat)pitch | ||
heading:heading]; | ||
} | ||
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- (instancetype)initWithCenterCoordinate:(CLLocationCoordinate2D)centerCoordinate | ||
altitude:(CLLocationDistance)altitude | ||
pitch:(CGFloat)pitch | ||
heading:(CLLocationDirection)heading | ||
{ | ||
if (self = [super init]) | ||
{ | ||
_centerCoordinate = centerCoordinate; | ||
_altitude = altitude; | ||
_pitch = pitch; | ||
_heading = heading; | ||
} | ||
return self; | ||
} | ||
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- (nullable instancetype)initWithCoder:(NSCoder *)coder | ||
{ | ||
if (self = [super init]) | ||
{ | ||
_centerCoordinate = CLLocationCoordinate2DMake([coder decodeDoubleForKey:@"centerLatitude"], | ||
[coder decodeDoubleForKey:@"centerLongitude"]); | ||
_altitude = [coder decodeDoubleForKey:@"altitude"]; | ||
_pitch = [coder decodeDoubleForKey:@"pitch"]; | ||
_heading = [coder decodeDoubleForKey:@"heading"]; | ||
} | ||
return self; | ||
} | ||
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- (void)encodeWithCoder:(NSCoder *)coder | ||
{ | ||
[coder encodeDouble:_centerCoordinate.latitude forKey:@"centerLatitude"]; | ||
[coder encodeDouble:_centerCoordinate.longitude forKey:@"centerLongitude"]; | ||
[coder encodeDouble:_altitude forKey:@"altitude"]; | ||
[coder encodeDouble:_pitch forKey:@"pitch"]; | ||
[coder encodeDouble:_heading forKey:@"heading"]; | ||
} | ||
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- (id)copyWithZone:(nullable NSZone *)zone | ||
{ | ||
return [[[self class] allocWithZone:zone] initWithCenterCoordinate:_centerCoordinate | ||
altitude:_altitude | ||
pitch:_pitch | ||
heading:_heading]; | ||
} | ||
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- (NSString *)description | ||
{ | ||
return [NSString stringWithFormat:@"<MKMapCamera %p centerCoordinate:%f, %f altitude:%.0fm heading:%.0f° pitch:%.0f°>", | ||
self, _centerCoordinate.latitude, _centerCoordinate.longitude, _altitude, _heading, _pitch]; | ||
} | ||
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@end |
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