private void SelectCombo_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
GeoPoint newCenter = GetMapCenter();
switch (selectCombo.SelectedIndex)
{
case 0: // Bing
_downloadAerial = new BingAerialRepository();
if (_isMapLoaded)
{
map.Center = new Location(newCenter.lat, newCenter.lng);
map.ZoomLevel = Convert.ToInt32(wbMain.InvokeScript("getZoomLevel"));
}
map.Visibility = Visibility.Visible;
wbMain.Visibility = Visibility.Hidden;
_mapSource = MapSource.Bing;
break;
case 1: // Google Maps
_downloadAerial = new GoogleMapsAerialRepository();
if (_isMapLoaded)
{
wbMain.InvokeScript("setCenter", $"{newCenter.lat},{newCenter.lng}");
wbMain.InvokeScript("setZoom", map.ZoomLevel);
}
wbMain.Visibility = Visibility.Visible;
map.Visibility = Visibility.Hidden;
_mapSource = MapSource.Google;
break;
}
}
private void DownloadImage(string requestUrl, MapType mapType)
{
SaveFileDialog fileDialog = new SaveFileDialog();
string format = AerialRepository.GetFormatForMapType(mapType);
if (_currentDirectory != null)
{
fileDialog.InitialDirectory = _currentDirectory;
}
fileDialog.Filter = $"Image File (*.{format})|*.{format}";
if (fileDialog.ShowDialog() == true)
{
string fileName = fileDialog.FileName;
try
{
AerialRepository.DownloadImage(requestUrl, fileName);
Close();
_imageData.FileName = fileName;
_callback?.Invoke(_mapSource, _imageData);
}
catch (Exception ex)
{
string msg = "An error occurred saving the image.\n" + ex.Message + "\nPlease try again.";
MessageBox.Show(msg);
}
}
}
public void UpdateAerial()
{
Document doc = Application.DocumentManager.MdiActiveDocument;
if (doc == null)
{
return;
}
Editor ed = doc.Editor;
// Select an aerial entity to update
PromptEntityResult entityResult = ed.GetEntity("Pick an aerial to update : ");
if (entityResult.Status == PromptStatus.OK)
{
// Create a new transaction to contain the update
Transaction tx = doc.TransactionManager.StartTransaction();
try
{
// Get the aerial entity object and try to read its extension dictionary
RasterImage aerialEnt = tx.GetObject(entityResult.ObjectId, OpenMode.ForRead) as RasterImage;
if (aerialEnt.ExtensionDictionary.IsNull)
{
throw new Exception(ErrorStatus.InvalidInput, "Unrecognized aerial image.");
}
// Get the extension dictionary object
DBDictionary extDict = tx.GetObject(aerialEnt.ExtensionDictionary, OpenMode.ForRead) as DBDictionary;
if (!extDict.Contains("ImageData"))
{
throw new Exception(ErrorStatus.InvalidInput, "Unrecognized aerial image.");
}
// Get the associated image data
ObjectId boundsEntryId = extDict.GetAt("ImageData");
Xrecord boundsRecord = tx.GetObject(boundsEntryId, OpenMode.ForRead) as Xrecord;
TypedValue[] resBuff = boundsRecord.Data.AsArray();
GeoPoint center = new GeoPoint((resBuff[0].Value as double?).Value, (resBuff[1].Value as double?).Value);
GeoPoint neCorner = new GeoPoint((resBuff[2].Value as double?).Value, (resBuff[3].Value as double?).Value);
GeoPoint swCorner = new GeoPoint((resBuff[4].Value as double?).Value, (resBuff[5].Value as double?).Value);
int zoom = (resBuff[6].Value as int?).Value;
int mapTypeInt = (resBuff[7].Value as int?).Value;
int mapSourceInt = (resBuff[8].Value as int?).Value;
MapType mapType = (MapType)mapTypeInt;
AerialRepository repository;
if (mapSourceInt == 0)
{
repository = new BingAerialRepository();
}
else
{
repository = new GoogleMapsAerialRepository();
}
// Get the current filename using the aerial's RasterImageDef
ObjectId aerialImgDefId = aerialEnt.ImageDefId;
RasterImageDef aerialImgDef = tx.GetObject(aerialImgDefId, OpenMode.ForRead) as RasterImageDef;
string filename = aerialImgDef.SourceFileName;
// Get the image width and height
int width = (int)aerialImgDef.Size.X;
int height = (int)aerialImgDef.Size.Y;
// Get the request details for the image downlaod
AerialImageData imageData = new AerialImageData(center, neCorner,
swCorner, width, height, zoom, mapType, filename);
string requestUrl = repository.BuildImageRequestUrl(imageData, update: true);
// Delete the current entity
aerialImgDef.UpgradeOpen();
aerialImgDef.Unload(true);
// Download the new aerial photo to replace the old
AerialRepository.DownloadImage(requestUrl, filename);
// Reload the image entity
aerialImgDef.Load();
// Commit the transaction
tx.Commit();
} catch (Exception ex)
{
ed.WriteMessage("Error updating aerial: " + ex.Message + '\n');
ed.WriteMessage("Please try again.\n");
} finally
{
tx.Dispose();
}
}
}
