public virtual void AddToDownloadQueue(CameraBase camera, GeoSpatialDownloadRequest newRequest)
{
QuadTile key = newRequest.QuadTile;
key.WaitingForDownload = true;
lock (m_downloadRequests.SyncRoot)
{
if (m_downloadRequests.Contains(key))
{
return;
}
m_downloadRequests.Add(key, newRequest);
if (m_downloadRequests.Count >= m_maxQueueSize)
{
//remove spatially farthest request
GeoSpatialDownloadRequest farthestRequest = null;
Angle curDistance = Angle.Zero;
Angle farthestDistance = Angle.Zero;
foreach (GeoSpatialDownloadRequest curRequest in m_downloadRequests.Values)
{
curDistance = MathEngine.SphericalDistance(
curRequest.QuadTile.CenterLatitude,
curRequest.QuadTile.CenterLongitude,
camera.Latitude,
camera.Longitude);
if (curDistance > farthestDistance)
{
farthestRequest = curRequest;
farthestDistance = curDistance;
}
}
farthestRequest.Dispose();
farthestRequest.QuadTile.DownloadRequest = null;
m_downloadRequests.Remove(farthestRequest.QuadTile);
}
}
ServiceDownloadQueue();
}
public virtual void Dispose()
{
try {
isInitialized = false;
if (texture != null &&
!texture.Disposed)
{
texture.Dispose();
texture = null;
}
if (northWestChild != null)
{
northWestChild.Dispose();
northWestChild = null;
}
if (southWestChild != null)
{
southWestChild.Dispose();
southWestChild = null;
}
if (northEastChild != null)
{
northEastChild.Dispose();
northEastChild = null;
}
if (southEastChild != null)
{
southEastChild.Dispose();
southEastChild = null;
}
if (DownloadRequest != null)
{
QuadTileSet.RemoveFromDownloadQueue(DownloadRequest);
DownloadRequest.Dispose();
DownloadRequest = null;
}
}
catch {}
}
