Roundabout icon assumes right-hand driving

[1ec5]

For roundabouts, the turn banner shows an icon that goes counterclockwise, even in countries that drive on the left:

Even without Project-OSRM/osrm-backend#2772 / Project-OSRM/osrm-backend#4415, we can flip the icon based on whether the roundabout maneuver’s initial and final headings indicate a left or right turn, since those headings correspond to the entrance maneuver, as opposed to the exit maneuver.

I think this issue will be unaffected by Project-OSRM/osrm-backend#4358.

/cc @bsudekum @frederoni @MoKob

[1ec5]

The fix would go on this line or thereabouts.

[1ec5]

Similar to #640, I think fixing this issue would entail looking at the enter-roundabout step’s maneuver direction: if it’s to the left, then flip the roundabout icon horizontally.

[1ec5]

I think fixing this issue would entail looking at the enter-roundabout step’s maneuver direction: if it’s to the left, then flip the roundabout icon horizontally.

Here’s an example where the step’s direction (derived from the maneuver’s modifier in the Directions API response) will be slightRight when using a roundabout to continue going straight, whether or not includesExitRoundaboutManeuver (roundabout_exits) is set. However, note that the direction will be the overall direction of travel in the case of a “roundabout turn” maneuver.

/cc @mcwhittemore

[1ec5]

Fixed in #911.

/cc @bsudekum