public IEnumerable<IFeature> FetchTiles(BoundingBox boundingBox, double resolution)
{
var extent = new Extent(boundingBox.Min.X, boundingBox.Min.Y, boundingBox.Max.X, boundingBox.Max.Y);
var levelId = BruTile.Utilities.GetNearestLevel(_source.Schema.Resolutions, resolution);
var infos = _source.Schema.GetTileInfos(extent, levelId).ToList();
ICollection<WaitHandle> waitHandles = new List<WaitHandle>();
foreach (TileInfo info in infos)
{
if (_bitmaps.Find(info.Index) != null) continue;
if (_queue.Contains(info.Index)) continue;
var waitHandle = new AutoResetEvent(false);
waitHandles.Add(waitHandle);
_queue.Add(info.Index);
ThreadPool.QueueUserWorkItem(GetTileOnThread, new object[] { _source, info, _bitmaps, waitHandle });
}
WaitHandle.WaitAll(waitHandles.ToArray());
IFeatures features = new Features();
foreach (TileInfo info in infos)
{
byte[] bitmap = _bitmaps.Find(info.Index);
if (bitmap == null) continue;
IRaster raster = new Raster(new MemoryStream(bitmap), new BoundingBox(info.Extent.MinX, info.Extent.MinY, info.Extent.MaxX, info.Extent.MaxY));
IFeature feature = features.New();
feature.Geometry = raster;
features.Add(feature);
}
return features;
}
/// <summary>
/// Retrieves the bitmap from ArcGIS Dynamic service
/// </summary>
public bool TryGetMap(IViewport viewport, ref IRaster raster)
{
int width;
int height;
try
{
width = Convert.ToInt32(viewport.Width);
height = Convert.ToInt32(viewport.Height);
}
catch (OverflowException)
{
Trace.Write("Could not conver double to int (ExportMap size)");
return false;
}
var uri = new Uri(GetRequestUrl(viewport.Extent, width, height));
var request = WebRequest.Create(uri);
request.Method = "GET";
request.Timeout = timeOut;
request.Credentials = Credentials ?? CredentialCache.DefaultCredentials;
try
{
var myWebResponse = (HttpWebResponse)request.GetResponse();
var dataStream = myWebResponse.GetResponseStream();
var bytes = BruTile.Utilities.ReadFully(myWebResponse.GetResponseStream());
raster = new Raster(new MemoryStream(bytes), viewport.Extent);
if (dataStream != null) dataStream.Close();
myWebResponse.Close();
return true;
}
catch (WebException webEx)
{
Trace.Write("There was a problem connecting to the ArcGIS server: " + webEx.Message);
}
catch (Exception ex)
{
Trace.Write("There was a problem while attempting to request the ArcGIS layer" + ex.Message);
}
return false;
}
public bool TryGetMap(IViewport viewport, ref IRaster raster)
{
int width;
int height;
try
{
width = Convert.ToInt32(viewport.Width);
height = Convert.ToInt32(viewport.Height);
}
catch (OverflowException ex)
{
Logger.Log(LogLevel.Error, "Could not convert double to int (ExportMap size)", ex);
return false;
}
var uri = new Uri(GetRequestUrl(viewport.Extent, width, height));
var webRequest = (HttpWebRequest)WebRequest.Create(uri);
if (Credentials == null)
webRequest.UseDefaultCredentials = true;
else
webRequest.Credentials = Credentials;
try
{
var myWebResponse = webRequest.GetSyncResponse(_timeOut);
using (var dataStream = myWebResponse.GetResponseStream())
{
try
{
var bytes = BruTile.Utilities.ReadFully(dataStream);
raster = new Raster(new MemoryStream(bytes), viewport.Extent);
}
catch (Exception ex)
{
Logger.Log(LogLevel.Error, ex.Message, ex);
return false;
}
}
return true;
}
catch (WebException ex)
{
Logger.Log(LogLevel.Warning, ex.Message, ex);
if (!ContinueOnError)
throw (new RenderException(
"There was a problem connecting to the ArcGISImage server",
ex));
Debug.WriteLine("There was a problem connecting to the WMS server: " + ex.Message);
}
catch (Exception ex)
{
if (!ContinueOnError)
throw (new RenderException("There was a problem while attempting to request the WMS", ex));
Debug.WriteLine("There was a problem while attempting to request the WMS" + ex.Message);
}
return false;
}
public bool TryGetMap(IViewport viewport, ref IRaster raster)
{
int width;
int height;
try
{
width = Convert.ToInt32(viewport.Width);
height = Convert.ToInt32(viewport.Height);
}
catch (OverflowException)
{
Trace.Write("Could not conver double to int (ExportMap size)");
return false;
}
var url = GetRequestUrl(viewport.Extent, width, height);
try
{
using (var task = _getStreamAsync(url))
{
// PDD: This could be more efficient
var bytes = BruTile.Utilities.ReadFully(task.Result);
raster = new Raster(new MemoryStream(bytes), viewport.Extent);
task.Result.Close();
}
return true;
}
catch (WebException webEx)
{
if (!ContinueOnError)
throw (new RenderException(
"There was a problem connecting to the WMS server",
webEx));
Trace.Write("There was a problem connecting to the WMS server: " + webEx.Message);
}
catch (Exception ex)
{
if (!ContinueOnError)
throw (new RenderException("There was a problem while attempting to request the WMS", ex));
Trace.Write("There was a problem while attempting to request the WMS" + ex.Message);
}
return false;
}
public bool TryGetMap(IViewport viewport, ref IRaster raster)
{
int width;
int height;
try
{
width = Convert.ToInt32(viewport.Width);
height = Convert.ToInt32(viewport.Height);
}
catch (OverflowException)
{
Trace.Write("Could not convert double to int (ExportMap size)");
return false;
}
var uri = new Uri(GetRequestUrl(viewport.Extent, width, height));
WebRequest webRequest = WebRequest.Create(uri);
try
{
using (var webResponse = (HttpWebResponse)webRequest.GetResponse())
using (var dataStream = webResponse.GetResponseStream())
{
if (!webResponse.ContentType.StartsWith("image")) return false;
byte[] bytes = BruTile.Utilities.ReadFully(dataStream);
raster = new Raster(new MemoryStream(bytes), viewport.Extent);
}
return true;
}
catch (WebException webEx)
{
if (!ContinueOnError)
throw (new RenderException(
"There was a problem connecting to the WMS server",
webEx));
Trace.Write("There was a problem connecting to the WMS server: " + webEx.Message);
}
catch (Exception ex)
{
if (!ContinueOnError)
throw (new RenderException("There was a problem while attempting to request the WMS", ex));
Trace.Write("There was a problem while attempting to request the WMS" + ex.Message);
}
return false;
}
/// <summary>
/// Retrieves the bitmap from ArcGIS Dynamic service
/// </summary>
public bool TryGetMap(IViewport viewport, ref IRaster raster)
{
int width;
int height;
try
{
width = Convert.ToInt32(viewport.Width);
height = Convert.ToInt32(viewport.Height);
}
catch (OverflowException)
{
Debug.WriteLine("Could not conver double to int (ExportMap size)");
return false;
}
var uri = new Uri(GetRequestUrl(viewport.Extent, width, height));
var request = (HttpWebRequest)WebRequest.Create(uri);
if (Credentials == null)
request.UseDefaultCredentials = true;
else
request.Credentials = Credentials;
try
{
var myWebResponse = request.GetSyncResponse(_timeOut);
var dataStream = myWebResponse.GetResponseStream();
var bytes = BruTile.Utilities.ReadFully(myWebResponse.GetResponseStream());
raster = new Raster(new MemoryStream(bytes), viewport.Extent);
if (dataStream != null) dataStream.Dispose();
myWebResponse.Dispose();
return true;
}
catch
{
return false;
}
}
