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();
}
public void LeaveReadLock()
{
Lock.ReleaseReaderLock();
}