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GoogleMaps Framework Reference

GMSCameraPosition

@interface GMSCameraPosition : NSObject <NSCopying, NSMutableCopying>

An immutable class that aggregates all camera position parameters.

  • Location on the Earth towards which the camera points.

    Declaration

    Swift

    var target: CLLocationCoordinate2D { get }

    Objective-C

    @property (nonatomic, readonly) CLLocationCoordinate2D target;

  • Zoom level. Zoom uses an exponentional scale, where zoom 0 represents the entire world as a 256 x 256 square. Each successive zoom level increases magnification by a factor of 2. So at zoom level 1, the world is 512x512, and at zoom level 2, the entire world is 1024x1024.

    Declaration

    Swift

    var zoom: Float { get }

    Objective-C

    @property (nonatomic, readonly) float zoom;

  • Bearing of the camera, in degrees clockwise from true north.

    Declaration

    Swift

    var bearing: CLLocationDirection { get }

    Objective-C

    @property (nonatomic, readonly) CLLocationDirection bearing;

  • The angle, in degrees, of the camera from the nadir (directly facing the Earth). 0 is straight down, 90 is parallel to the ground. Note that the maximum angle allowed is dependent on the zoom. You can think of it as a series of line segments as a function of zoom, rather than a step function. For zoom 16 and above, the maximum angle is 65 degrees. For zoom 10 and below, the maximum angle is 30 degrees.

    Declaration

    Swift

    var viewingAngle: Double { get }

    Objective-C

    @property (nonatomic, readonly) double viewingAngle;

  • Designated initializer. Configures this GMSCameraPosition with all available camera properties. Building a GMSCameraPosition via this initializer (or by the following convenience constructors) will implicitly clamp camera values.

    Declaration

    Swift

    init(target: CLLocationCoordinate2D, zoom: Float, bearing: CLLocationDirection, viewingAngle: Double)

    Objective-C

    - (nonnull instancetype)initWithTarget:(CLLocationCoordinate2D)target                                   zoom:(float)zoom                                bearing:(CLLocationDirection)bearing                           viewingAngle:(double)viewingAngle;

    Parameters

    target

    Location on the earth towards which the camera points.
    zoom

    The zoom level near the center of the screen.
    bearing

    Bearing of the camera in degrees clockwise from true north.
    viewingAngle

    The angle, in degrees, of the camera angle from the nadir (directly facing the Earth)

  • Convenience initializer for GMSCameraPosition for a particular target and zoom level. This will set the bearing and viewingAngle properties of this camera to zero defaults (i.e., directly facing the Earth’s surface, with the top of the screen pointing north).

    Declaration

    Swift

    init(target: CLLocationCoordinate2D, zoom: Float)

    Objective-C

    - (nonnull instancetype)initWithTarget:(CLLocationCoordinate2D)target                                   zoom:(float)zoom;

    Parameters

    target

    Location on the earth towards which the camera points.
    zoom

    The zoom level near the center of the screen.

  • Convenience initializer for GMSCameraPosition for a particular latitidue, longitude and zoom level. This will set the bearing and viewingAngle properties of this camera to zero defaults (i.e., directly facing the Earth’s surface, with the top of the screen pointing north).

    Declaration

    Swift

    init(latitude: CLLocationDegrees, longitude: CLLocationDegrees, zoom: Float)

    Objective-C

    - (nonnull instancetype)initWithLatitude:(CLLocationDegrees)latitude                                longitude:(CLLocationDegrees)longitude                                     zoom:(float)zoom;

    Parameters

    latitude

    The latitude component of the location towards which the camera points.
    longitude

    The latitude component of the location towards which the camera points.
    zoom

    The zoom level near the center of the screen.

  • Convenience initializer for GMSCameraPosition, with latitude/longitude and all other camera properties as per -initWithTarget:zoom:bearing:viewingAngle:.

    Declaration

    Swift

    init(latitude: CLLocationDegrees, longitude: CLLocationDegrees, zoom: Float, bearing: CLLocationDirection, viewingAngle: Double)

    Objective-C

    - (nonnull instancetype)initWithLatitude:(CLLocationDegrees)latitude                                longitude:(CLLocationDegrees)longitude                                     zoom:(float)zoom                                  bearing:(CLLocationDirection)bearing                             viewingAngle:(double)viewingAngle;

    Parameters

    latitude

    The latitude component of the location towards which the camera points.
    longitude

    The latitude component of the location towards which the camera points.
    zoom

    The zoom level near the center of the screen.
    bearing

    Bearing of the camera in degrees clockwise from true north.
    viewingAngle

    The angle, in degrees, of the camera angle from the nadir (directly facing the Earth)

  • Convenience constructor for GMSCameraPosition for a particular target and zoom level. This will set the bearing and viewingAngle properties of this camera to zero defaults (i.e., directly facing the Earth’s surface, with the top of the screen pointing north).

    Declaration

    Swift

    class func camera(withTarget target: CLLocationCoordinate2D, zoom: Float) -> Self

    Objective-C

    + (nonnull instancetype)cameraWithTarget:(CLLocationCoordinate2D)target                                     zoom:(float)zoom;

  • Convenience constructor for GMSCameraPosition, as per +cameraWithTarget:zoom:.

    Declaration

    Swift

    class func camera(withLatitude latitude: CLLocationDegrees, longitude: CLLocationDegrees, zoom: Float) -> Self

    Objective-C

    + (nonnull instancetype)cameraWithLatitude:(CLLocationDegrees)latitude                                  longitude:(CLLocationDegrees)longitude                                       zoom:(float)zoom;

  • Convenience constructor for GMSCameraPosition, with all camera properties as per +initWithTarget:zoom:bearing:viewingAngle:.

    Declaration

    Swift

    class func camera(withTarget target: CLLocationCoordinate2D, zoom: Float, bearing: CLLocationDirection, viewingAngle: Double) -> Self

    Objective-C

    + (nonnull instancetype)cameraWithTarget:(CLLocationCoordinate2D)target                                     zoom:(float)zoom                                  bearing:(CLLocationDirection)bearing                             viewingAngle:(double)viewingAngle;

  • Convenience constructor for GMSCameraPosition, with latitude/longitude and all other camera properties as per +initWithTarget:zoom:bearing:viewingAngle:.

    Declaration

    Swift

    class func camera(withLatitude latitude: CLLocationDegrees, longitude: CLLocationDegrees, zoom: Float, bearing: CLLocationDirection, viewingAngle: Double) -> Self

    Objective-C

    + (nonnull instancetype)cameraWithLatitude:(CLLocationDegrees)latitude                                  longitude:(CLLocationDegrees)longitude                                       zoom:(float)zoom                                    bearing:(CLLocationDirection)bearing                               viewingAngle:(double)viewingAngle;

  • Get the zoom level at which meters distance, at given coord on Earth, correspond to the specified number of screen points.

    For extremely large or small distances the returned zoom level may be smaller or larger than the minimum or maximum zoom level allowed on the camera.

    This helper method is useful for building camera positions that contain specific physical areas on Earth.

    Declaration

    Swift

    class func zoom(at coordinate: CLLocationCoordinate2D, forMeters meters: CLLocationDistance, perPoints points: CGFloat) -> Float

    Objective-C

    + (float)zoomAtCoordinate:(CLLocationCoordinate2D)coordinate                 forMeters:(CLLocationDistance)meters                 perPoints:(CGFloat)points;