public override async Task <ExtendRouteResponseMessage> ExtendRoute(ExtendRouteRequestMessage request, ServerCallContext context)
{
var mediatorRequest = new ExtendRouteQuery(request.Tracks.Select(x => convertTrack(x)).ToList(), request.Step);
var mediatorResponse = await mediator.Send(mediatorRequest);
var result = new ExtendRouteResponseMessage();
result.Tracks.AddRange(mediatorResponse.Select(x => convertTrack(x)));
return(result);
}
public Task <List <Track> > Handle(ExtendRouteQuery request, CancellationToken cancellationToken)
{
List <Track> resultTracks = new List <Track>();
List <Coord> finalTrackCoords = new List <Coord>();
List <Coord> points = new List <Coord>();
double step = request.Step;
foreach (var track in request.Tracks)
{
cancellationToken.ThrowIfCancellationRequested();
finalTrackCoords.Clear();
for (int i = 0; i < track.Count - 1; i++)
{
Coord p1 = track[i], p2 = track[i + 1];
bool backDirection = false;
if (p1.Lat > p2.Lat)
{
backDirection = true;
p1 = p2;
p2 = track[i];
}
double a = (p1.Long - p2.Long) / (p1.Lat - p2.Lat);
double b = p2.Long - p2.Lat * a;
points.Clear();
for (double j = p1.Lat + step; j < p2.Lat; j += step)
{
double y = a * j + b;
points.Add(new Coord(j, y));
}
if (backDirection)
{
points.Reverse();
finalTrackCoords.Add(p2);
}
else
{
finalTrackCoords.Add(p1);
}
finalTrackCoords.AddRange(points);
}
resultTracks.Add(new Track(finalTrackCoords));
}
return(Task.FromResult(resultTracks));
}
