Estimated Time of Arrival at Waypoint about mapbox-directions-swift

[1ec5]

The navigation SDK’s RouteProgress class has some conveniences for this kind of thing, but MapboxDirections tends to stick to functionality that’s provided by the Directions API itself.

Is there a way to get the eta for a certain Waypoint directly?

Each route leg goes from one waypoint to the next, so this snippet gets you the expected travel time from the origin to the intermediate waypoint at index waypointIndex, and you can modify it to compute other statistics instead:

// Get the legs up to the waypoint.
let precedingLegs = route.legs.prefix(waypointIndex)
// Sum up the legs’ ETAs.
let expectedTravelTime = precedingLegs.map(\.expectedTravelTime).reduce(0, +)
// Shift the current date forward by the ETA.
let arrivalDate = Date() + expectedTravelTime

It would also be interesting to be able to display that time to the nav ui.

That does sound interesting. Would you mind elaborating on this idea in a new issue in https://github.com/mapbox/mapbox-navigation-ios/issues/? Thanks!