void AddLoadTask(LoadTask t)
{
if (tileLoadQueue4Tasks == null)
{
lock (tileLoadQueue4)
{
if (tileLoadQueue4Tasks == null)
{
tileLoadQueue4Tasks = new List <Task>();
while (tileLoadQueue4Tasks.Count < GThreadPoolSize)
{
Debug.WriteLine("creating ProcessLoadTask: " + tileLoadQueue4Tasks.Count);
tileLoadQueue4Tasks.Add(Task.Factory.StartNew(delegate()
{
string ctid = "ProcessLoadTask[" + Thread.CurrentThread.ManagedThreadId + "]";
Thread.CurrentThread.Name = ctid;
Debug.WriteLine(ctid + ": started");
do
{
if (tileLoadQueue4.Count == 0)
{
Debug.WriteLine(ctid + ": ready");
if (Interlocked.Increment(ref loadWaitCount) >= GThreadPoolSize)
{
Interlocked.Exchange(ref loadWaitCount, 0);
OnLoadComplete(ctid);
}
}
ProcessLoadTask(tileLoadQueue4.Take(), ctid);
}while (!tileLoadQueue4.IsAddingCompleted);
Debug.WriteLine(ctid + ": exit");
}, TaskCreationOptions.LongRunning));
}
}
}
}
tileLoadQueue4.Add(t);
}
static void ProcessLoadTask(LoadTask task, string ctid)
{
GPoint mousepos = task.Core.PositionPixel; //task.Core.Provider.Projection.FromLatLngToPixel(task.Core.newPoint, task.Core.Zoom);//
GPoint corepos1 = new GPoint(mousepos.X / 256, mousepos.Y / 256); //6461,3361807,420
task.Core.corepos = corepos1;
GPoint corepos2 = new GPoint(corepos1.X, corepos1.Y - 1);
GPoint corepos3 = new GPoint(corepos1.X + 1, corepos1.Y - 1);
GPoint corepos4 = new GPoint(corepos1.X + 1, corepos1.Y);
try
{
#region -- execute --
var m = task.Core.Matrix.GetTileWithReadLock(task.Zoom, task.Pos);
if (!m.NotEmpty)
{
Debug.WriteLine(ctid + " - try load: " + task);
Tile t = new Tile(task.Zoom, task.Pos);
foreach (var tl in task.Core.provider.Overlays)
{
int retry = 0;
do
{
PureImage img = null;
Exception ex = null;
if (task.Zoom >= task.Core.provider.MinZoom && (!task.Core.provider.MaxZoom.HasValue ||
task.Zoom <= task.Core.provider.MaxZoom))
{
if (task.Core.skipOverZoom == 0 || task.Zoom <= task.Core.skipOverZoom)
{
// tile number inversion(BottomLeft -> TopLeft)
if (tl.InvertedAxisY)
{
img = GMaps.Instance.GetImageFrom(tl, new GPoint(task.Pos.X,
task.Core.maxOfTiles.Height - task.Pos.Y), task.Zoom,
corepos1, out ex);
}
else // ok
{
img = GMaps.Instance.GetImageFrom(tl, task.Pos, task.Zoom,
corepos1, out ex);
}
}
}
if (img != null && ex == null)
{
if (task.Core.okZoom < task.Zoom)
{
task.Core.okZoom = task.Zoom;
task.Core.skipOverZoom = 0;
Debug.WriteLine("skipOverZoom disabled, okZoom: " + task.Core.okZoom);
}
}
else if (ex != null)
{
if ((task.Core.skipOverZoom != task.Core.okZoom) && (task.Zoom > task.Core.okZoom))
{
if (ex.Message.Contains("(404) Not Found"))
{
task.Core.skipOverZoom = task.Core.okZoom;
Debug.WriteLine("skipOverZoom enabled: " + task.Core.skipOverZoom);
}
}
}
// check for parent tiles if not found
if (img == null && task.Core.okZoom > 0 && task.Core.fillEmptyTiles &&
task.Core.Provider.Projection is MercatorProjection)
{
int zoomOffset = task.Zoom > task.Core.okZoom ? task.Zoom - task.Core.okZoom : 1;
long Ix = 0;
GPoint parentTile = GPoint.Empty;
while (img == null && zoomOffset < task.Zoom)
{
Ix = (long)Math.Pow(2, zoomOffset);
parentTile = new GPoint((task.Pos.X / Ix), (task.Pos.Y / Ix));
img = GMaps.Instance.GetImageFrom(tl, parentTile, task.Zoom - zoomOffset++,
corepos1, out ex);
}
if (img != null)
{
// offsets in quadrant
long Xoff = Math.Abs(task.Pos.X - (parentTile.X * Ix));
long Yoff = Math.Abs(task.Pos.Y - (parentTile.Y * Ix));
img.IsParent = true;
img.Ix = Ix;
img.Xoff = Xoff;
img.Yoff = Yoff;
// wpf
//var geometry = new RectangleGeometry(new Rect(Core.tileRect.X + 0.6, Core.tileRect.Y + 0.6, Core.tileRect.Width + 0.6, Core.tileRect.Height + 0.6));
//var parentImgRect = new Rect(Core.tileRect.X - Core.tileRect.Width * Xoff + 0.6, Core.tileRect.Y - Core.tileRect.Height * Yoff + 0.6, Core.tileRect.Width * Ix + 0.6, Core.tileRect.Height * Ix + 0.6);
// gdi+
//System.Drawing.Rectangle dst = new System.Drawing.Rectangle((int)Core.tileRect.X, (int)Core.tileRect.Y, (int)Core.tileRect.Width, (int)Core.tileRect.Height);
//System.Drawing.RectangleF srcRect = new System.Drawing.RectangleF((float)(Xoff * (img.Img.Width / Ix)), (float)(Yoff * (img.Img.Height / Ix)), (img.Img.Width / Ix), (img.Img.Height / Ix));
}
}
if (img != null)
{
Debug.WriteLine(ctid + " - tile loaded: " + img.Data.Length / 1024 + "KB, " + task);
{
t.AddOverlay(img);
}
break;
}
else
{
if (ex != null)
{
lock (task.Core.FailedLoads)
{
if (!task.Core.FailedLoads.ContainsKey(task))
{
task.Core.FailedLoads.Add(task, ex);
if (task.Core.OnEmptyTileError != null)
{
if (!task.Core.RaiseEmptyTileError)
{
task.Core.RaiseEmptyTileError = true;
task.Core.OnEmptyTileError(task.Zoom, task.Pos);
}
}
}
}
}
if (task.Core.RetryLoadTile > 0)
{
Debug.WriteLine(ctid + " - ProcessLoadTask: " + task + " -> empty tile, retry " + retry);
{
Thread.Sleep(1111);
}
}
}
}while (++retry < task.Core.RetryLoadTile);
}
if (t.HasAnyOverlays && task.Core.IsStarted)
{
task.Core.Matrix.SetTile(t);
}
else
{
t.Dispose();
}
}
#endregion
}
catch (Exception ex)
{
Debug.WriteLine(ctid + " - ProcessLoadTask: " + ex.ToString());
}
finally
{
if (task.Core.Refresh != null)
{
task.Core.Refresh.Set();
}
}
}
public void UpdateBounds()////////////////////////////
{
if (!IsStarted || Provider.Equals(EmptyProvider.Instance))
{
return;
}
updatingBounds = true;
tileDrawingListLock.AcquireWriterLock();
try
{
#region -- find tiles around --
tileDrawingList.Clear();
for (long i = (int)Math.Floor(-sizeOfMapArea.Width * scaleX), countI =
(int)Math.Ceiling(sizeOfMapArea.Width * scaleX); i <= countI; i++)
{
for (long j = (int)Math.Floor(-sizeOfMapArea.Height * scaleY), countJ =
(int)Math.Ceiling(sizeOfMapArea.Height * scaleY); j <= countJ; j++)
{
GPoint p = centerTileXYLocation;
p.X += i;
p.Y += j;
if (p.X >= minOfTiles.Width && p.Y >= minOfTiles.Height && p.X <= maxOfTiles.Width &&
p.Y <= maxOfTiles.Height)
{
DrawTile dt = new DrawTile()
{
PosXY = p,
PosPixel = new GPoint(p.X * tileRect.Width, p.Y * tileRect.Height),
DistanceSqr = (centerTileXYLocation.X - p.X) * (centerTileXYLocation.X - p.X) +
(centerTileXYLocation.Y - p.Y) * (centerTileXYLocation.Y - p.Y)
};
if (!tileDrawingList.Contains(dt))
{
tileDrawingList.Add(dt);
}
}
}
}
if (GMaps.Instance.ShuffleTilesOnLoad)
{
Stuff.Shuffle <DrawTile>(tileDrawingList);
}
else
{
tileDrawingList.Sort();
}
#endregion
}
finally
{
tileDrawingListLock.ReleaseWriterLock();
}
Interlocked.Exchange(ref loadWaitCount, 0);
tileDrawingListLock.AcquireReaderLock();
try
{
foreach (DrawTile p in tileDrawingList)
{
LoadTask task = new LoadTask(p.PosXY, Zoom, this);
AddLoadTask(task);
}
}
finally
{
tileDrawingListLock.ReleaseReaderLock();
}
{
LastTileLoadStart = DateTime.Now;
Debug.WriteLine("OnTileLoadStart - at zoom " + Zoom + ", time: " + LastTileLoadStart.TimeOfDay);
}
updatingBounds = false;
OnTileLoadStart?.Invoke();
}