Add the continue straight in waypoint option

[Martin317]

Feature

Is possible to add the feature continue straight to the trip endpoint?

I see a lot of people asking for it and i found it very useful.

In some cases we use the trip for optimize the route and navigate through it in a vehicle, the vehicles cannot u-turn in the middle of the street.

I understand the complexity of the algorithm, osrm is awesome. I think this feature makes it better yet.

thanks

[jcoupey]

I think the hard part here is that the trip calculation relies on the travel time/distance matrices, which are essentially information on pairs of locations.

On the other hand avoiding a u-turn at B in a A->B->C scenario is dependent on previous and next locations A and C. So the cost of route legs in a continue_straight context is by nature depending on triplets of locations. That is fixed in a route context where the waypoints are ordered, but the point of the trip endpoint is precisely to decide ordering...