/// <summary>
/// Returns the position of the lat/lon in the routerpoint relative to the edge.
/// </summary>
/// <returns>Returns left or right.</returns>
public static RelativeDirectionEnum Direction(this RouterPoint routerPoint, RouterDb routerDb)
{
Line segment;
var pointOnNetwork = routerPoint.LocationOnNetwork(routerDb, out segment);
var direction = Itinero.Navigation.Directions.DirectionCalculator.Calculate(
segment.Coordinate1, pointOnNetwork, routerPoint.Location());
switch (direction.Direction)
{
case RelativeDirectionEnum.Left:
case RelativeDirectionEnum.SharpLeft:
case RelativeDirectionEnum.SlightlyLeft:
return(RelativeDirectionEnum.Left);
case RelativeDirectionEnum.Right:
case RelativeDirectionEnum.SharpRight:
case RelativeDirectionEnum.SlightlyRight:
return(RelativeDirectionEnum.Right);
}
Itinero.Logging.Logger.Log("Extensions", Itinero.Logging.TraceEventType.Warning,
"Cannot determine left or right for routerpoint {1}: {0} was found, taking Left as default.",
direction.Direction, routerPoint.ToInvariantString());
return(RelativeDirectionEnum.Left);
}