public State Find(string userId, double lat, double lng, int rangeId)
{
var state = GetState(userId);
if (state.Poi != null)
{
Stop(userId, state, true);
}
// set coordinates
state.Coordinates = new GeoPoint(lat, lng);
// get pois from cache or from Overpass
List <Poi> pois;
if (state.CachedResult != null && state.CachedResult.IsEqual(state.Coordinates, rangeId))
{
pois = state.CachedResult.Pois;
}
else
{
pois = QueryPois(rangeId, state);
state.CachedResult = new CachedResult
{
Coordinates = state.Coordinates,
RangeId = rangeId,
Pois = pois
};
}
// choose poi
var distance = _rangeDistances[rangeId];
var poi = ChoosePoi(state.Coordinates, distance, pois, state.User, state.LastCategoriesFound, state.LastTagsFound);
if (poi == null)
{
state.Poi = null;
state.Route = null;
}
else
{
var mapbox = new Mapbox();
var route = mapbox.Walk(state.Coordinates, poi.Coordinates);
state.Poi = poi;
state.Route = route;
}
SetIsNear(state);
SaveState(state);
return(state);
}
public State Move(string userId, double lat, double lng)
{
var state = GetState(userId);
var changed = state.Coordinates == null ||
Math.Abs(state.Coordinates.Lat - lat) > CompareTolerance ||
Math.Abs(state.Coordinates.Lng - lng) > CompareTolerance;
state.Coordinates = new GeoPoint(lat, lng);
if (state.Poi != null && changed)
{
var mapbox = new Mapbox();
var route = mapbox.Walk(state.Coordinates, state.Poi.Coordinates);
state.Route = route;
}
SetIsNear(state);
SaveState(state);
return(state);
}
