PolylineState

PolylineState is an ObservableObject used by Polyline(state:).

Use it when a route, track, or line style needs to update without recreating the overlay declaration.

Public Properties

id: String
strokeColor: UIColor
strokeWidth: Double
geodesic: Bool
points: [GeoPointProtocol]
extra: Any?
onClick: OnPolylineEventHandler?

let polylineState = PolylineState(
    points: [
        GeoPoint(latitude: 35.6812, longitude: 139.7671),
        GeoPoint(latitude: 35.6586, longitude: 139.7454)
    ],
    strokeColor: .blue,
    strokeWidth: 4
)

Polyline(state: polylineState)

polylineState.points.append(GeoPoint(latitude: 35.7101, longitude: 139.8107))
polylineState.strokeColor = .red

Route Updates

Replace the full points array when a route is recalculated:

polylineState.points = recalculatedRoute
polylineState.strokeWidth = 5

Use onClick when the user should be able to select a route or inspect line metadata stored in extra.