Polyline

struct Polyline

This class can be used for :

  • Encoding an [CLLocation] or a [CLLocationCoordinate2D] to a polyline String
  • Decoding a polyline String to an [CLLocation] or a [CLLocationCoordinate2D]
  • Encoding / Decoding associated levels

it is aims to produce the same results as google’s iOS sdk not as the online tool which is fuzzy when it comes to rounding values

it is based on google’s algorithm that can be found here :

:see: https://developers.google.com/maps/documentation/utilities/polylinealgorithm

  • The array of coordinates (nil if polyline cannot be decoded)

    Declaration

    Swift

    public let coordinates: [CLLocationCoordinate2D]?

  • The encoded polyline

    Declaration

    Swift

    public let encodedPolyline: String

  • The array of levels (nil if cannot be decoded, or is not provided)

    Declaration

    Swift

    public let levels: [UInt32]?

  • The encoded levels (nil if cannot be encoded, or is not provided)

    Declaration

    Swift

    public let encodedLevels: String?

  • The array of location (computed from coordinates)

    Declaration

    Swift

    public var locations: [CLLocation]? { get }

Public Methods

  • This designated initializer encodes a [CLLocationCoordinate2D]

    Declaration

    Swift

    public init(coordinates: [CLLocationCoordinate2D], levels: [UInt32]? = nil, precision: Double = 1e5)

    Parameters

    coordinates

    The Array of CLLocationCoordinate2D that you want to encode
    levels

    The optional Array of levels that you want to encode (default: nil)
    precision

    The precision used for encoding (default: 1e5)

  • This designated initializer decodes a polyline String

    Declaration

    Swift

    public init(encodedPolyline: String, encodedLevels: String? = nil, precision: Double = 1e5)

    Parameters

    encodedPolyline

    The polyline that you want to decode
    encodedLevels

    The levels that you want to decode (default: nil)
    precision

    The precision used for decoding (default: 1e5)

  • This init encodes a [CLLocation]

    Declaration

    Swift

    public init(locations: [CLLocation], levels: [UInt32]? = nil, precision: Double = 1e5)

    Parameters

    locations

    The Array of CLLocation that you want to encode
    levels

    The optional array of levels that you want to encode (default: nil)
    precision

    The precision used for encoding (default: 1e5)