/// <summary>
/// Calculate the route for a set of coordinates
/// </summary>
public static OSMResponse CalculateRoute(String osrmAddress, IEnumerable <Coordinate> coords)
{
// Get initial response
var response = NetworkUtilities.JsonRequest <OSMResponse>(
new Uri(osrmAddress + MakeRouteAction(coords)));
// process response
// here i used a linq expression instead of foreach loop
// this part is dependent on System.Linq namespace!
response.Route_Instructions = (
from objs in response.Raw_Route select new OSMInstruction(objs)).ToArray();
var alt_instructions = new List <AlternativeInstructions>();
foreach (var instSet in response.Raw_Alternatives)
{
var i = new OSMInstruction[instSet.Length];
for (int j = 0; j < instSet.Length; j++)
{
i[j] = new OSMInstruction(instSet[j]);
}
var alt = new AlternativeInstructions();
alt.Instructions = i;
alt_instructions.Add(alt);
}
response.Alternative_Instructions = alt_instructions.ToArray();
// another linq shorthand
response.Via_Points = (from raw_coord in response.Raw_Via
select
new Coordinate(Convert.ToDouble(raw_coord[0]), Convert.ToDouble(raw_coord[1]))).ToArray();
return(response);
}
/// <summary>
/// Finds nearest OSRM node.
/// </summary>
/// <param name="osrmAddress">Address of the OSRM server</param>
/// <param name="c">Coordinate</param>
/// <returns></returns>
public static Coordinate FindNearestNode(String osrmAddress, Coordinate c)
{
String actionString = "nearest?loc=" + c.lat + "," + c.lon;
LocResponse response = NetworkUtilities.JsonRequest <LocResponse>(
new Uri(osrmAddress + actionString));
if (response.Mapped_Coordinate.Length < 2)
{
GlobalLogger.SendLogMessage("OSRM_Error", MessageFlags.Warning, "Coordinate out of bounds ({0}, {1})", c.First, c.Second);
return(new Coordinate(0, 0));
}
return(new Coordinate(response.Mapped_Coordinate[0], response.Mapped_Coordinate[1]));
}