private void SearchPlaceAndNearbys()
{
// Reset UI and clear existing before search again.
ClearupPreviousSearchResult();
searchPoint = GetSearchPoint();
// osmReverseGeocoder only support 4326, we need convert point to 4326
var projectedSearchPoint = (PointShape)projection.ConvertToInternalProjection(searchPoint);
// Create the searchPreference by UI controls.
SearchPreference searchPreference = GetSearchPreferenceFromUI();
searchResult = osmReverseGeocoder.Search(projectedSearchPoint, searchPreference);
if (searchResult != null)
{
// convert result to 3857
foreach (var place in searchResult.Nearby)
{
place.Geometry = projection.ConvertToExternalProjection(place.Geometry);
var point = projection.ConvertToExternalProjection(place.CenterLongitude, place.CenterLatitude);
place.CenterLongitude = point.X;
place.CenterLatitude = point.Y;
}
// Update search result to map markers.
DisplaySearchResult(searchResult);
// Update search result to left panel list.
tabSearchResult.SelectedIndex = 0;
TabSearchResult_SelectionChanged(tabSearchResult, null);
}
}
private void ClearupPreviousSearchResult()
{
// Clear existing before doing search.
searchResult = null;
lsbPlaces.ItemsSource = null;
lsbAddress.ItemsSource = null;
lsbIntersection.ItemsSource = null;
serachedPlaces = new Collection <Place>();
serachedIntersetions = new Collection <Place>();
serachedAddress = new Collection <Place>();
bestmatchingMarkerOverlay.Markers.Clear();
}
private void DisplaySearchResult(ReverseGeocoderResult searchResult)
{
if (searchResult != null && searchResult.BestMatch != null)
{
// Display address of the BestMatchingPlace in the left panel and add a marker.
if (searchResult.BestMatch is Intersection)
{
Intersection intersection = (Intersection)searchResult.BestMatch;
string roadInfos = string.Empty;
List <string> roadNames = intersection.Description.Split(',').ToList();
string lastRoadName = roadNames[roadNames.Count - 1];
roadNames.RemoveAt(roadNames.Count - 1);
txtBestMatchingPlace.Text = string.Format("Intersection between {0} and {1} in {2}", string.Join(", ", roadNames), lastRoadName, intersection.Address);
}
else
{
txtBestMatchingPlace.Text = searchResult.BestMatch.Address;
}
// the best mach disctance is samller than 200 meter. if not, it sholud be a larger area place
var distance1 = searchResult.BestMatch.Geometry.GetDistanceTo(searchPoint, GeographyUnit.Meter, DistanceUnit.Meter);
// The distance between SearchPoint and the center of BestMatch.
PointShape bestMatchGeometry = searchResult.BestMatch.Geometry.GetCenterPoint();
var distance2 = bestMatchGeometry.GetDistanceTo(searchPoint, GeographyUnit.Meter, DistanceUnit.Meter);
if (distance1 == 0)
{
// BestMatch contains search point
if (distance2 > 210)
{
bestMatchGeometry = searchPoint;
}
}
Marker marker = CreateMarkerByCategory("BestMatchingPlace", bestMatchGeometry, searchResult.BestMatch.Address);
bestmatchingMarkerOverlay.Markers.Add(marker);
// Add index,distance and direction for addresses, places and intersections.
int placeIndex = 0;
int intersectionIndex = 0;
int addressIndex = 0;
foreach (Place place in searchResult.Nearby)
{
if (place.PlaceCategory != PlaceCategories.Road)
{
if (place.PlaceCategory.ToString().Contains(PlaceCategories.AddressPoint.ToString()) || (string.IsNullOrEmpty(place.Name) && !string.IsNullOrEmpty(place.HouseNumber)))
{
serachedAddress.Add(place);
AddPropertiesForPlace(place, addressIndex);
addressIndex++;
}
else if (place.PlaceCategory.ToString().Contains(PlaceCategories.Intersection.ToString()))
{
serachedIntersetions.Add(place);
AddPropertiesForPlace(place, intersectionIndex);
intersectionIndex++;
}
else
{
serachedPlaces.Add(place);
AddPropertiesForPlace(place, placeIndex);
placeIndex++;
}
}
}
// Bind addresses,intersections,places to listbox.
lsbAddress.ItemsSource = serachedAddress;
lsbPlaces.ItemsSource = serachedPlaces;
lsbIntersection.ItemsSource = serachedIntersetions;
}
}