// adds pushpins for the POI locations. The pusphins can be customised depending on the place.
// the method also adds poi info to the listview
private async void addPushPinAtPOIAndAddtoList(JsonSchemas.NavteqPoiSchema.Response response)
{
if (response != null && response.ResultSet != null &&
response.ResultSet.Results != null &&
response.ResultSet.Results.Length > 0)
{
this.Dispatcher.Invoke(() =>
{
myMap.Children.Clear();
nearbyPlacesList.Visibility = Visibility.Visible;
});
foreach (var poi in response.ResultSet.Results)
{
this.Dispatcher.Invoke(() =>
{
var loc = new Microsoft.Maps.MapControl.WPF.Location(poi.Latitude, poi.Longitude);
var pin = new Pushpin();
pin.Tag = poi;
pin.Content = "" + StaticVariables.POINumber;
pin.Location = loc;
myMap.Children.Add(pin);
});
BitmapImage poiImage = await getImageryOfPOI(new Coordinate(poi.Latitude, poi.Longitude));
addPOIToListView(poiImage, poi, StaticVariables.POINumber++);
}
}
else
{
setSystemWarningMessagesToSpeechLabel(SystemMessages.NOPOI_MESSAGE);
System.Diagnostics.Trace.WriteLine("No result");
}
}
// this function processes the SHOW_NEARBY intent by resolving the location and adding Places of Interest (POI) near it.
private async void ProcessShowNearbyIntent(LUISJsonObject luisJson)
{
this.WriteLine("{0}", "------------------ProcessShowNearbyIntent------------------");
// first the map is cleared of all child elements
this.Dispatcher.Invoke(() =>
{
clearMap();
});
// the entity whose location is to be identified
Entity showNearbyEntity = null;
Entity bingEntity = null;
// boolean for any abstract location e.g."here", "there"
bool isAbstractLocationPresent = false;
if (luisJson.Entities.Length > 0)
{
foreach (Entity entity in luisJson.Entities)
{
if (entity.Type.Contains(LuisEntityTypes.PLACE))
{
showNearbyEntity = entity;
}
else if (entity.Type.Contains(LuisEntityTypes.BINGENTITYTYPE))
{
bingEntity = entity;
}
else if (entity.Type.Contains(LuisEntityTypes.ABSTRACTLOCATION))
{
isAbstractLocationPresent = true;
}
}
}
if (null != showNearbyEntity || null != bingEntity)
{
int? entityId = null;
Coordinate coordinateOfLocation = null;
if (null != showNearbyEntity)
{
coordinateOfLocation = await getLocationFromAddress(showNearbyEntity.EntityValue);
if (null == coordinateOfLocation)
{
setSystemWarningMessagesToSpeechLabel(string.Format(SystemMessages.NOLOCATION_MESSAGE, showNearbyEntity.EntityValue));
return;
}
}
if (null != bingEntity)
{
if (StaticVariables.bingPOISearchEntityNameToEntityId.ContainsKey(bingEntity.EntityValue.ToLower()))
{
entityId = StaticVariables.bingPOISearchEntityNameToEntityId[bingEntity.EntityValue.ToLower()];
}
if (!entityId.HasValue)
{
setSystemWarningMessagesToSpeechLabel(string.Format(SystemMessages.NOENTITY_MESSAGE, bingEntity.EntityValue));
return;
}
}
// adds POI at the location
if (null != coordinateOfLocation)
{
if (entityId.HasValue)
{
JsonSchemas.NavteqPoiSchema.Response poiResponse = await getPOIForLocation(coordinateOfLocation.Latitude, coordinateOfLocation.Longitude, new EntityTypeFilter(entityId.Value.ToString()));
nearbyListHeader(bingEntity.EntityValue);
// add specific places like coffee, bus stop, bar, based on enity name specified by user
addPushPinAtPOIAndAddtoList(poiResponse);
this.Dispatcher.Invoke(() =>
{
setCenterOfMap(coordinateOfLocation.Latitude, coordinateOfLocation.Longitude, 14);
});
}
else
{
JsonSchemas.NavteqPoiSchema.Response poiResponse = await getPOIForLocation(coordinateOfLocation.Latitude, coordinateOfLocation.Longitude);
nearbyListHeader("Places");
// finds all POI at the location
addPushPinAtPOIAndAddtoList(poiResponse);
this.Dispatcher.Invoke(() =>
{
setCenterOfMap(coordinateOfLocation.Latitude, coordinateOfLocation.Longitude, 14);
});
}
}
// in case location is not specified but specific POI is mentioned then POI is found at the place where the user kinect hand is pointed.
else
{
if (entityId.HasValue)
{
nearbyListHeader(bingEntity.EntityValue);
// if the user mentions a abstractlocation like "here" or "there"
if (isAbstractLocationPresent)
{
addPOIToMapFromKinectHandPosition(new EntityTypeFilter(entityId.Value.ToString()));
}
// if the user does not mention any location for finding POI then map center is taken as reference location
else
{
double latitude = 0;
double longitude = 0;
this.Dispatcher.Invoke(() =>
{
Trace.WriteLine("first");
latitude = myMap.Center.Latitude;
longitude = myMap.Center.Longitude;
});
Trace.WriteLine("first");
JsonSchemas.NavteqPoiSchema.Response poiResponse = await getPOIForLocation(latitude, longitude, new EntityTypeFilter(entityId.Value.ToString()));
addPushPinAtPOIAndAddtoList(poiResponse);
}
}
}
}
// if no entities are found and SHOW_NEARBY intent is identified
// then the POI nearby to the location where the kinect hand is pointing to is found
else
{
nearbyListHeader("Places");
addPOIToMapFromKinectHandPosition();
}
}