/// <summary>
/// Adds an image to the animation list
/// </summary>
private void AddAnimationFrame(WMSDownload dl)
{
// Make sure we're on the right thread
if( InvokeRequired )
{
// run asynchronously
AddAnimationFrameDelegate dlgt =
new AddAnimationFrameDelegate(AddAnimationFrame);
this.BeginInvoke(dlgt, new object[] { dl });
return;
}
if(this.currentlyAnimatingNode==null)
return;
lock(this.animationFrames.SyncRoot)
{
this.animationFrames.Add(dl);
if(this.animationFrames.Count != 1 &&
this.progressBarTotalProgress.Value != this.progressBarTotalProgress.Maximum)
{
this.progressBarTotalProgress.Value = this.animationFrames.Count;
WMSLayer curLayer = (WMSLayer)this.currentlyAnimatingNode.Tag;
if(curLayer.dates != null)
this.progressBarTotalProgress.Maximum = curLayer.dates.Length;
}
}
}
private void downloadLayer(WMSLayer layer, string curDate)
{
bool cancel = (this.downloadState == DownloadState.Cancel);
if(cancel)
return;
string fileName = "Default";
string time="";
if(curDate != null)
{
time = "&time=" + curDate;
fileName = curDate.Replace(":","");
}
string layerPath = CacheDirectory;
if(layer.Name!=null)
layerPath = Path.Combine( CacheDirectory, layer.Name );
const string fileType = "png";
string url = AnimatedEarthManager.ServerUrl+
"?service=" + this.serviceName +
"&version=" + WmsVersion +
"&request=GetMap" +
"&layers=" + layer.Name +
"&format=image/png" +
"&width=" + (layer.Width != 0 ? layer.Width.ToString(CultureInfo.InvariantCulture) : "1024") +
"&height=" + (layer.Height != 0 ? layer.Height.ToString(CultureInfo.InvariantCulture) : "512") +
time +
"&crs=" + layer.crs +
"&bbox=" + String.Format(CultureInfo.InvariantCulture, "{0},{1},{2},{3}", layer.west, layer.south, layer.east, layer.north);
WMSDownload wmsDownload = new WMSDownload( url );
wmsDownload.Date = curDate;
wmsDownload.Title = layer.Title;
wmsDownload.West = layer.west;
wmsDownload.South = layer.south;
wmsDownload.East = layer.east;
wmsDownload.North = layer.north;
// Use fast dds format if available
wmsDownload.SavedFilePath = Path.Combine( layerPath, fileName) + ".dds";
if(File.Exists(wmsDownload.SavedFilePath))
{
AddAnimationFrame(wmsDownload);
return;
}
// Or try the original format from server
wmsDownload.SavedFilePath = Path.Combine(layerPath, fileName) + "." + fileType;
if(File.Exists(wmsDownload.SavedFilePath))
{
AddAnimationFrame(wmsDownload);
return;
}
// File wasn't available locally - queue it for download
lock(this.downloadQueue.SyncRoot)
{
this.downloadQueue.Enqueue(wmsDownload);
}
}
/// <summary>
/// Download thread runs this function.
/// </summary>
private void Downloader()
{
while(true)
{
if(this.animationState == AnimationState.Pending)
{
Thread.Sleep(100);
continue;
}
lock(this.downloadQueue)
{
if(this.downloadQueue.Count <= 0)
{
Thread.Sleep(100);
continue;
}
this.wmsDownload = (WMSDownload)this.downloadQueue.Dequeue();
}
if(File.Exists(wmsDownload.SavedFilePath))
{
AddAnimationFrame(wmsDownload);
return;
}
// Download
try
{
this.downloadState = DownloadState.Downloading;
updateStatusBar( string.Format( CultureInfo.CurrentCulture,
"Downloading {0} ({1}/{2})",
wmsDownload.Date,
this.animationFrames.Count+1,
this.currentlySelectedLayer.AnimationFrameCount ) );
using( WebDownload dl = new WebDownload( wmsDownload.Url) )
{
dl.DownloadType = DownloadType.Wms;
dl.ProgressCallback += new DownloadProgressHandler(updateCurrentProgressBar);
dl.DownloadFile(wmsDownload.SavedFilePath);
}
Download_CompleteCallback(wmsDownload);
}
catch(ThreadAbortException)
{
// Normal shutdown
}
catch(Exception caught)
{
updateStatusBar(caught.Message);
// Abort download.
return;
}
}
}
private void Download_CompleteCallback(WMSDownload wdl)
{
// Not running on UI thread
try
{
updateStatusBar( "Converting: " + wdl.Date );
string srcPath = wdl.SavedFilePath;
// Convert to DDS
/* // TODO: Investigate whether conversion really improves playback speed.
wdl.SavedFilePath = Path.Combine(
Path.GetDirectoryName(wdl.SavedFilePath),
Path.GetFileNameWithoutExtension(wdl.SavedFilePath)) + ".dds";
Directory.CreateDirectory(Path.GetDirectoryName(wdl.SavedFilePath));
ImageHelper.ConvertToDxt3(srcPath, wdl.SavedFilePath,this.worldWindow.DrawArgs.device,
!WorldWindow.World.Settings.KeepOriginalSvsImages);
*/
AddAnimationFrame(wdl);
updateStatusBar( "" );
this.downloadState = DownloadState.Pending;
}
catch(Exception caught)
{
this.PauseAnimation();
this.worldWindow.Caption = caught.Message;
updateStatusBar( caught.Message );
Thread.Sleep(600);
}
}
public ImageLayerInfo( WMSDownload dl )
{
this.Id = dl.Name + "-" + Path.GetFileName(dl.SavedFilePath);
this.Description = dl.Title;
this.ImageFilePath = dl.SavedFilePath + ".dds";
this.North = (float)dl.North;
this.South = (float)dl.South;
this.West = (float)dl.West;
this.East = (float)dl.East;
}
public WMSDownload GetWmsRequest( string dateString,
WMSLayerStyle curStyle,
decimal north,
decimal south,
decimal west,
decimal east,
string cacheDirectory)
{
string url = GetWMSRequestUrl(dateString,
(curStyle != null ? curStyle.name : null),
north,
south,
west,
east);
WMSDownload wmsDownload = new WMSDownload( url );
wmsDownload.North = north;
wmsDownload.South = south;
wmsDownload.West = west;
wmsDownload.East = east;
//fix widening errors from conversion of float to decimal for upDown controls
// TODO: Is this widening thing needed anymore?
if(this._west > this._east)
{
if(wmsDownload.West > this._west)
wmsDownload.West = this._west;
if(wmsDownload.East < this._east)
wmsDownload.East = this._east;
}
else
{
if(wmsDownload.West < this._west)
wmsDownload.West = this._west;
if(wmsDownload.East > this._east)
wmsDownload.East = this._east;
}
if(wmsDownload.North > this._north)
wmsDownload.North = this._north;
if(wmsDownload.South < this._south)
wmsDownload.South = this._south;
wmsDownload.Title = this._title;
if(curStyle != null)
wmsDownload.Title += " (" + curStyle.title + ")";
string path = Path.Combine( cacheDirectory , Path.Combine(
this._parentWMSList.Name,
this._name + (curStyle != null ? curStyle.name : "")));
if(dateString!=null && dateString.Length>0)
{
wmsDownload.SavedFilePath = Path.Combine( path, dateString.Replace(":",""));
wmsDownload.Title += "\n" + dateString;
}
else
wmsDownload.SavedFilePath = Path.Combine( path, "Default" );
return wmsDownload;
}
private void EnqueueDownload(WMSDownload dl)
{
this.downloadQueue.Enqueue(dl);
StartDownloadThread();
}
/// <summary>
/// Convert if requested and prepare downloaded data for display
/// </summary>
private void ProcessDownloadedImage(WMSDownload wdl, Stream dataStream)
{
try
{
string ddsFile = wdl.SavedFilePath + ".dds";
if( wdl.Date.Length>0)
UpdateStatusBar( "Converting " + wdl.Date );
else
UpdateStatusBar( "Converting... " );
Directory.CreateDirectory(Path.GetDirectoryName(wdl.SavedFilePath));
if (dataStream.Length==0)
throw new WebException("Server returned no data.");
ImageHelper.ConvertToDxt3(dataStream, ddsFile );
if(this.animationState == AnimationState.Cancel || animationState == AnimationState.Stop)
return;
ImageLayerInfo imageLayerInfo = new ImageLayerInfo(wdl);
imageLayerInfo.Save(wdl.SavedFilePath + ".wwi");
lock(this.animationFrames.SyncRoot)
animationFrames.Add(imageLayerInfo);
if(this.animationState == AnimationState.Cancel || this.animationState == AnimationState.Stop)
return;
UpdateStatusBar( "" );
}
catch(Exception caught)
{
this.worldWindow.Caption = caught.Message;
Log.Write( caught );
}
}
private bool isCachedFileBoundsAvailable(WMSDownload cachedDownloadInfo)
{
if(cachedDownloadInfo.North == this.numericUpDownNorth.Value &&
cachedDownloadInfo.South == this.numericUpDownSouth.Value &&
cachedDownloadInfo.West == this.numericUpDownWest.Value &&
cachedDownloadInfo.East == this.numericUpDownEast.Value)
return true;
else
return false;
}
