Electronic Horizon

Defines options for emitting Notification.Name.electronicHorizonDidUpdatePosition, Notification.Name.electronicHorizonDidEnterRoadObject, and Notification.Name.electronicHorizonDidExitRoadObject notifications while a RouteController or PassiveLocationManager is active.

RoadGraph provides methods to get edge shape (e.g. RoadGraph.Edge) and metadata.

You do not create a RoadGraph object manually. Instead, observe the Notification.Name.electronicHorizonDidUpdatePosition notification to obtain edge identifiers and get more details about the edges using the RouteController.roadGraph or PassiveLocationManager.roadGraph property.

Standard of OpenLR

A human-readable name or route reference code that identifies a road.

Describes the object on the road. There are two sources of road objects: active route and the electronic horizon.

Contains information about distance to the road object of a concrete type/shape (gantry, polygon, line, point etc.).

Provides methods for road object matching.

Matching results are delivered asynchronously via a delegate. In case of error (if there are no tiles in the cache, decoding failed, etc.) the object won’t be matched.

The location of a road object in the road graph.

Type of the road object

RoadObjectMatcher delegate.

Represents location of road object on road graph.

A point object is represented by a single edge whose location has the same fractionFromStart and fractionToEnd.

An error that occures during road object matching.

Contains information about position of the point on the graph and it’s geo-position.

Identifies a road object in an electronic horizon. A road object represents a notable transition point along a road, such as a toll booth or tunnel entrance. A road object is similar to a RouteAlert but is more closely associated with the routing graph managed by the RoadGraph class.

Use a RoadObjectStore object to get more information about a road object with a given identifier or get the locations of road objects along RoadGraph.Edges.