GeographicCoordinates

public struct GeographicCoordinates

The GeographicCoordinates object encompasses the basic elements of a location on Earth, including its altitude.

  • Undocumented

    Declaration

    Swift

    public let longitude: Degree
    Show on GitHub

  • Undocumented

    Declaration

    Swift

    public let latitude: Degree
    Show on GitHub

  • Undocumented

    Declaration

    Swift

    public let altitude: Meter
    Show on GitHub

  • Returns the equivalent CLLocation object. Note the minus sign on longitude.

    Declaration

    Swift

    public var location: CLLocation { get }
    Show on GitHub

  • Convenience method

    Declaration

    Swift

    public static var zero: GeographicCoordinates { get }
    Show on GitHub

  • Returns a GeographicCoordinates object.

    Declaration

    Swift

    public init(positivelyWestwardLongitude longitude: Degree, latitude: Degree, altitude: Meter = 0)

    Parameters

    longitude

    The (positively westward) longitude.
    latitude

    The latitude
    altitude

    The optional altitude (default = 0).
    Show on GitHub

  • Returns a GeographicCoordinates object.

    Declaration

    Swift

    public init(_ location: CLLocation)

    Parameters

    location

    a CLLocation object
    Show on GitHub

  • High accuracy computation of the distance between two points on Earth’s surface, taking into account the Earth flattening.

    Declaration

    Swift

    public func globeDistance(to otherCoordinates: GeographicCoordinates) -> Meter

    Parameters

    otherCoordinates

    The coordinates of the second point.

    Return Value

    The distance, in meters, between the two points, along Earth’s surface.

    Show on GitHub

  • Returns the radius of the curvature of the Earth’s meridian See AA p.82-83 Symbol: Rm

    Declaration

    Swift

    public var globeRadiusOfCurvature: Meter { get }
    Show on GitHub

  • Returns the radius of the circle made at a constant latitude Uses the Earth ellipsoid as defined by IAU in 1976. See AA p.82-83. Symbol: Rp

    Declaration

    Swift

    public var globeRadiusOfParallelOfLatitude: Meter { get }
    Show on GitHub

  • Note: rho is the observer’s distance to center of the Earth (for an equatorial radius set to unity). Theta (or phi) prime is the geocentric (not geographic) latitude. See AA p.81

    Declaration

    Swift

    public func rhoSinThetaPrime(forObserverHeight height: Double) -> Double
    Show on GitHub

  • Note: rho is the observer’s distance to center of the Earth (for an equatorial radius set to unity). Theta (or phi) prime is the geocentric (not geographic) latitude. See AA p.81

    Declaration

    Swift

    public func rhoCosThetaPrime(forObserverHeight height: Double) -> Double
    Show on GitHub