public IEnumerable <SongDistance> GetNearSongs(double latitude, double longitude, int styleId)
{
var songsFromAmbassadors = _context.Historics
.Include(x => x.User)
.Include(x => x.Song).ThenInclude(x => x.Artist)
.Where(x => x.LikeType == LikeType.Ambassador && x.Song.StyleSongs.Any(y => y.StyleID == styleId))
.Select(x => new SongDistance
{
Song = x.Song,
Distance = Math.Round(DistanceHelper.CalculateDistance(latitude, longitude, x.User.LastGeoCoordinate.Latitude, x.User.LastGeoCoordinate.Longitude), 1)
})
.ToList();
var nearSongs = _context.Songs
.Include(x => x.Artist).ThenInclude(x => x.GeoCoordinate)
.Include(x => x.Historics)
.Include(x => x.StyleSongs)
.Where(x => x.StyleSongs.Any(y => y.StyleID == styleId))
.Select(x => new SongDistance
{
Song = x,
Distance = Math.Round(DistanceHelper.CalculateDistance(latitude, longitude, x.Artist.GeoCoordinate.Latitude, x.Artist.GeoCoordinate.Longitude), 1)
})
.ToList();
var result = nearSongs
.Concat(songsFromAmbassadors)
.OrderBy(x => x.Distance)
.GroupBy(x => x.Song.ID)
.Select(g => g.First())
.ToList();
return(result);
}
public double GetCurrentDistance(Location currentLocation)
{
if (currentLocation.Speed != 0)
{
double lastLeg = 0;
if (LastKnownLocation == null)
{
lastLeg = DistanceHelper.CalculateDistance(InitialLocation, currentLocation);
LastKnownLocation = currentLocation;
}
else
{
lastLeg = DistanceHelper.CalculateDistance(LastKnownLocation, currentLocation);
}
CurrentDistance = CurrentDistance + lastLeg;
}
return(CurrentDistance);
}
private List <Place> GetNearPlaces(List <Place> allPlaces, LatLng userLocation)
{
var lat = userLocation.Latitude;
var lng = userLocation.Longitude;
var nearPlacesList = new List <Place>();
foreach (Place place in allPlaces)
{
var placeLat = place.Lat;
var placeLng = place.Lng;
var distance = DistanceHelper.CalculateDistance(lat, lng, placeLat, placeLng);
if (distance <= 0.5)
{
nearPlacesList.Add(place);
}
}
nearPlacesList.OrderByDescending(o => o.Rating);
return(nearPlacesList);
}
private void AddMarkers(string category)
{
_googleMap.Clear();
LatLng userLatLng = new LatLng(_userLat, _userLng);
AddUserMarker(userLatLng);
_selectedPlaces = _placeDatabase.GetAllPlacesByCategory(category);
foreach (Place place in _selectedPlaces)
{
LatLng placeLatLng = new LatLng(place.Lat, place.Lng);
double distance = Math.Round(DistanceHelper.CalculateDistance(GetLastKnownLocation().Latitude, GetLastKnownLocation().Longitude, place.Lat, place.Lng), 2);
var placeMarker = new MarkerOptions();
placeMarker.SetPosition(placeLatLng)
.SetTitle(place.Name)
.SetSnippet("rating: " + place.Rating.ToString() + ", vzdialené: " + distance.ToString() + "km")
.SetIcon(BitmapDescriptorFactory.FromResource(GetIconByCategory(place.Category)));
_googleMap.AddMarker(placeMarker);
}
}
public override async void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
{
if (holder is PlaceViewHolder placeViewHolder)
{
placeViewHolder.PlaceNameTextView.Text = _places[position].Name;
placeViewHolder.PlaceRatingTextView.Text = _places[position].Rating.ToString();
LatLng userLatLng = await GetLocation();
double distance = Math.Round(DistanceHelper.CalculateDistance(userLatLng.Latitude, userLatLng.Longitude, _places[position].Lat, _places[position].Lng), 2);
placeViewHolder.PlaceDistanceTextView.Text = distance.ToString() + " km";
if (_places[position].Photo.Length <= 1)
{
int imageId = (int)typeof(Resource.Drawable).GetField("no_image").GetValue(null);
placeViewHolder.PlaceImageView.SetImageResource(imageId);
}
else
{
var imageBitmap = ImageHelper.GetImageBitmapFromUrl(_places[position].Photo);
placeViewHolder.PlaceImageView.SetImageBitmap(imageBitmap);
}
}
}