/// <summary>
/// enqueueens tile to cache
/// </summary>
/// <param name="task"></param>
void EnqueueCacheTask(CacheQueueItem task)
{
lock (tileCacheQueue)
{
if (!tileCacheQueue.Contains(task))
{
Debug.WriteLine("EnqueueCacheTask: " + task);
tileCacheQueue.Enqueue(task);
if (CacheEngine != null && CacheEngine.IsAlive)
{
WaitForCache.Set();
}
#if PocketPC
else if (CacheEngine == null || CacheEngine.State == ThreadState.Stopped || CacheEngine.State == ThreadState.Unstarted)
#else
else if (CacheEngine == null || CacheEngine.ThreadState == System.Threading.ThreadState.Stopped || CacheEngine.ThreadState == System.Threading.ThreadState.Unstarted)
#endif
{
CacheEngine = null;
CacheEngine = new Thread(new ThreadStart(CacheEngineLoop))
{
Name = "CacheEngine",
IsBackground = false,
Priority = ThreadPriority.Lowest
};
abortCacheLoop = false;
CacheEngine.Start();
}
}
}
}
/// <summary>
/// Creates our event thread that will receive native events
/// </summary>
private void CreateGpsEventThread()
{
// we only want to create the thread if we don't have one created already
// and we have opened the gps device
if (gpsEventThread == null && gpsHandle != IntPtr.Zero)
{
// Create and start thread to listen for GPS events
gpsEventThread = new Thread(new System.Threading.ThreadStart(WaitForGpsEvents));
gpsEventThread.IsBackground = false;
gpsEventThread.Name = "GMap.NET GpsEvents";
gpsEventThread.Start();
}
}
/// <summary>
/// starts loader threads if needed
/// </summary>
void EnsureLoaderThreads()
{
#if !PocketPC
while (GThreadPool.Count < 5)
#else
while (GThreadPool.Count < 2)
#endif
{
Thread t = new Thread(new ThreadStart(ProcessLoadTask));
{
t.Name = "GMap.NET TileLoader: " + GThreadPool.Count;
t.IsBackground = true;
t.Priority = ThreadPriority.BelowNormal;
}
GThreadPool.Add(t);
Debug.WriteLine("add " + t.Name + " to GThreadPool");
t.Start();
}
}
public Task ReloadMapAsync()
{
ReloadMap();
return(Task.Factory.StartNew(() =>
{
bool wait;
do
{
Thread.Sleep(100);
Monitor.Enter(TileLoadQueue);
try
{
wait = TileLoadQueue.Any();
}
finally
{
Monitor.Exit(TileLoadQueue);
}
} while (wait);
}));
}
/// <summary>
/// Closes the gps device.
/// </summary>
public void Close()
{
if (gpsHandle != IntPtr.Zero)
{
GPSCloseDevice(gpsHandle);
gpsHandle = IntPtr.Zero;
}
// Set our native stop event so we can exit our event thread.
if (stopHandle != IntPtr.Zero)
{
Win32.EventModify(stopHandle, (int)Win32.EventFlags.SET);
}
// wait exit
if (gpsEventThread != null)
{
quit.WaitOne();
gpsEventThread = null;
}
}
/// <summary>
/// updates map bounds
/// </summary>
void UpdateBounds()
{
if (MapType == NET.MapType.None)
{
return;
}
lock (tileLoadQueue)
{
tileDrawingListLock.AcquireWriterLock();
try
{
#region -- find tiles around --
tileDrawingList.Clear();
for (int i = -sizeOfMapArea.Width; i <= sizeOfMapArea.Width; i++)
{
for (int j = -sizeOfMapArea.Height; j <= sizeOfMapArea.Height; j++)
{
Point p = centerTileXYLocation;
p.X += i;
p.Y += j;
#if ContinuesMap
// ----------------------------
if (p.X < minOfTiles.Width)
{
p.X += (maxOfTiles.Width + 1);
}
if (p.X > maxOfTiles.Width)
{
p.X -= (maxOfTiles.Width + 1);
}
// ----------------------------
#endif
if (p.X >= minOfTiles.Width && p.Y >= minOfTiles.Height && p.X <= maxOfTiles.Width && p.Y <= maxOfTiles.Height)
{
if (!tileDrawingList.Contains(p))
{
tileDrawingList.Add(p);
}
}
}
}
if (GMaps.Instance.ShuffleTilesOnLoad)
{
Stuff.Shuffle <Point>(tileDrawingList);
}
#endregion
foreach (Point p in tileDrawingList)
{
LoadTask task = new LoadTask(p, Zoom);
{
if (!tileLoadQueue.Contains(task))
{
tileLoadQueue.Enqueue(task);
}
}
}
}
finally
{
tileDrawingListLock.ReleaseWriterLock();
}
#region -- starts loader threads if needed --
#if !PocketPC
while (GThreadPool.Count < GThreadPoolSize)
#else
while (GThreadPool.Count < GThreadPoolSize)
#endif
{
Thread t = new Thread(new ThreadStart(ProcessLoadTask));
{
t.Name = "GMap.NET TileLoader: " + GThreadPool.Count;
t.IsBackground = true;
t.Priority = ThreadPriority.BelowNormal;
}
GThreadPool.Add(t);
Debug.WriteLine("add " + t.Name + " to GThreadPool");
t.Start();
}
#endregion
lock (LastTileLoadStartEndLock)
{
LastTileLoadStart = DateTime.Now;
Debug.WriteLine("OnTileLoadStart - at zoom " + Zoom + ", time: " + LastTileLoadStart.TimeOfDay);
}
loadWaitCount = 0;
#if !PocketPC
Monitor.PulseAll(tileLoadQueue);
#else
wait.PulseAll();
#endif
}
if (OnTileLoadStart != null)
{
OnTileLoadStart();
}
}
void Dispose(bool disposing)
{
if (IsStarted)
{
if (invalidator != null)
{
invalidator.CancelAsync();
invalidator.DoWork -= new DoWorkEventHandler(invalidatorWatch);
invalidator.Dispose();
invalidator = null;
}
if (Refresh != null)
{
Refresh.Set();
Refresh.Close();
Refresh = null;
}
int x = Interlocked.Decrement(ref instances);
Debug.WriteLine("OnMapClose: " + x);
CancelAsyncTasks();
IsStarted = false;
if (Matrix != null)
{
Matrix.Dispose();
Matrix = null;
}
if (FailedLoads != null)
{
lock (FailedLoads)
{
FailedLoads.Clear();
RaiseEmptyTileError = false;
}
FailedLoads = null;
}
// cancel waiting loaders
Monitor.Enter(tileLoadQueue);
try
{
Monitor.PulseAll(tileLoadQueue);
tileDrawingList.Clear();
}
finally
{
Monitor.Exit(tileLoadQueue);
}
lock (GThreadPool)
{
#if PocketPC
Debug.WriteLine("waiting until loaders are stopped...");
while (GThreadPool.Count > 0)
{
var t = GThreadPool[0];
if (t.State != ThreadState.Stopped)
{
var tr = t.Join(1111);
Debug.WriteLine(t.Name + ", " + t.State);
if (!tr)
{
continue;
}
else
{
GThreadPool.Remove(t);
}
}
else
{
GThreadPool.Remove(t);
}
}
Thread.Sleep(1111);
#endif
}
if (tileDrawingListLock != null)
{
tileDrawingListLock.Dispose();
tileDrawingListLock = null;
tileDrawingList = null;
}
if (x == 0)
{
#if DEBUG
GMaps.Instance.CancelTileCaching();
#endif
GMaps.Instance.noMapInstances = true;
GMaps.Instance.WaitForCache.Set();
if (disposing)
{
GMaps.Instance.MemoryCache.Clear();
}
}
}
}
// tile consumer thread
void ProcessLoadTask()
{
LoadTask?task = null;
long lastTileLoadTimeMs;
bool stop = false;
#if !PocketPC
Thread ct = Thread.CurrentThread;
string ctid = "Thread[" + ct.ManagedThreadId + "]";
#else
int ctid = 0;
#endif
while (!stop && IsStarted)
{
task = null;
Monitor.Enter(tileLoadQueue);
try
{
while (tileLoadQueue.Count == 0)
{
Debug.WriteLine(ctid + " - Wait " + loadWaitCount + " - " + DateTime.Now.TimeOfDay);
if (++loadWaitCount >= GThreadPoolSize)
{
loadWaitCount = 0;
#region -- last thread takes action --
{
LastTileLoadEnd = DateTime.Now;
lastTileLoadTimeMs = (long)(LastTileLoadEnd - LastTileLoadStart).TotalMilliseconds;
}
#region -- clear stuff--
if (IsStarted)
{
GMaps.Instance.MemoryCache.RemoveOverload();
tileDrawingListLock.AcquireReaderLock();
try
{
Matrix.ClearLevelAndPointsNotIn(Zoom, tileDrawingList);
}
finally
{
tileDrawingListLock.ReleaseReaderLock();
}
}
#endregion
UpdateGroundResolution();
#if UseGC
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
#endif
Debug.WriteLine(ctid + " - OnTileLoadComplete: " + lastTileLoadTimeMs + "ms, MemoryCacheSize: " + GMaps.Instance.MemoryCache.Size + "MB");
if (OnTileLoadComplete != null)
{
OnTileLoadComplete(lastTileLoadTimeMs);
}
#endregion
}
if (!IsStarted || false == Monitor.Wait(tileLoadQueue, WaitForTileLoadThreadTimeout, false) || !IsStarted)
{
stop = true;
break;
}
}
if (IsStarted && !stop || tileLoadQueue.Count > 0)
{
task = tileLoadQueue.Pop();
}
}
finally
{
Monitor.Exit(tileLoadQueue);
}
if (task.HasValue && IsStarted)
{
try
{
#region -- execute --
var m = Matrix.GetTileWithReadLock(task.Value.Zoom, task.Value.Pos);
if (!m.NotEmpty)
{
Debug.WriteLine(ctid + " - try load: " + task);
Tile t = new Tile(task.Value.Zoom, task.Value.Pos);
foreach (var tl in provider.Overlays)
{
int retry = 0;
do
{
PureImage img = null;
Exception ex = null;
if (!provider.MaxZoom.HasValue || task.Value.Zoom <= provider.MaxZoom)
{
if (skipOverZoom == 0 || task.Value.Zoom <= skipOverZoom)
{
// tile number inversion(BottomLeft -> TopLeft)
if (tl.InvertedAxisY)
{
img = GMaps.Instance.GetImageFrom(tl, new GPoint(task.Value.Pos.X, maxOfTiles.Height - task.Value.Pos.Y), task.Value.Zoom, out ex);
}
else // ok
{
img = GMaps.Instance.GetImageFrom(tl, task.Value.Pos, task.Value.Zoom, out ex);
}
}
}
if (img != null && ex == null)
{
if (okZoom < task.Value.Zoom)
{
okZoom = task.Value.Zoom;
skipOverZoom = 0;
Debug.WriteLine("skipOverZoom disabled, okZoom: " + okZoom);
}
}
else if (ex != null)
{
if (skipOverZoom != okZoom)
{
if (ex.Message.Contains("(404) Not Found"))
{
skipOverZoom = okZoom;
Debug.WriteLine("skipOverZoom enabled: " + skipOverZoom);
}
}
}
// check for parent tiles if not found
if (img == null && okZoom > 0 && fillEmptyTiles && Provider.Projection is MercatorProjection)
{
int zoomOffset = task.Value.Zoom > okZoom ? task.Value.Zoom - okZoom : 1;
long Ix = 0;
GPoint parentTile = GPoint.Empty;
while (img == null && zoomOffset < task.Value.Zoom)
{
Ix = (long)Math.Pow(2, zoomOffset);
parentTile = new GMap.NET.GPoint((task.Value.Pos.X / Ix), (task.Value.Pos.Y / Ix));
img = GMaps.Instance.GetImageFrom(tl, parentTile, task.Value.Zoom - zoomOffset++, out ex);
}
if (img != null)
{
// offsets in quadrant
long Xoff = Math.Abs(task.Value.Pos.X - (parentTile.X * Ix));
long Yoff = Math.Abs(task.Value.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 (FailedLoads)
{
if (!FailedLoads.ContainsKey(task.Value))
{
FailedLoads.Add(task.Value, ex);
if (OnEmptyTileError != null)
{
if (!RaiseEmptyTileError)
{
RaiseEmptyTileError = true;
OnEmptyTileError(task.Value.Zoom, task.Value.Pos);
}
}
}
}
}
if (RetryLoadTile > 0)
{
Debug.WriteLine(ctid + " - ProcessLoadTask: " + task + " -> empty tile, retry " + retry);
{
Thread.Sleep(1111);
}
}
}
}while(++retry < RetryLoadTile);
}
if (t.HasAnyOverlays && IsStarted)
{
Matrix.SetTile(t);
}
else
{
t.Dispose();
}
}
#endregion
}
catch (Exception ex)
{
Debug.WriteLine(ctid + " - ProcessLoadTask: " + ex.ToString());
}
finally
{
if (Refresh != null)
{
Refresh.Set();
}
}
}
}
#if !PocketPC
Monitor.Enter(tileLoadQueue);
try
{
Debug.WriteLine("Quit - " + ct.Name);
lock (GThreadPool)
{
GThreadPool.Remove(ct);
}
}
finally
{
Monitor.Exit(tileLoadQueue);
}
#endif
}
/// <summary>
/// Method used to listen for native events from the GPS.
/// </summary>
private void WaitForGpsEvents()
{
//lock (this)
{
bool listening = true;
// allocate 3 handles worth of memory to pass to WaitForMultipleObjects
IntPtr handles = Utils.LocalAlloc(12);
// write the three handles we are listening for.
Marshal.WriteInt32(handles, 0, stopHandle.ToInt32());
Marshal.WriteInt32(handles, 4, deviceStateChangedHandle.ToInt32());
Marshal.WriteInt32(handles, 8, newLocationHandle.ToInt32());
while (listening)
{
int obj = WaitForMultipleObjects(3, handles, 0, -1);
if (obj != waitFailed)
{
switch (obj)
{
case 0:
// we've been signalled to stop
listening = false;
break;
case 1:
// device state has changed
if (deviceStateChanged != null)
{
deviceStateChanged(this, GetDeviceState());
}
break;
case 2:
// location has changed
if (locationChanged != null)
{
locationChanged(this, GetPosition());
}
break;
}
}
}
// free the memory we allocated for the native handles
Utils.LocalFree(handles);
if (newLocationHandle != IntPtr.Zero)
{
CloseHandle(newLocationHandle);
newLocationHandle = IntPtr.Zero;
}
if (deviceStateChangedHandle != IntPtr.Zero)
{
CloseHandle(deviceStateChangedHandle);
deviceStateChangedHandle = IntPtr.Zero;
}
if (stopHandle != IntPtr.Zero)
{
CloseHandle(stopHandle);
stopHandle = IntPtr.Zero;
}
// clear our gpsEventThread so that we can recreate this thread again
// if the events are hooked up again.
gpsEventThread = null;
Debug.WriteLine("gps device stopped...");
}
}
/// <summary>
/// updates map bounds
/// </summary>
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 ContinuesMap
// ----------------------------
if (p.X < minOfTiles.Width)
{
p.X += (maxOfTiles.Width + 1);
}
if (p.X > maxOfTiles.Width)
{
p.X -= (maxOfTiles.Width + 1);
}
// ----------------------------
#endif
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();
}
Monitor.Enter(tileLoadQueue);
try
{
tileDrawingListLock.AcquireReaderLock();
try
{
foreach (DrawTile p in tileDrawingList)
{
LoadTask task = new LoadTask(p.PosXY, Zoom);
{
if (!tileLoadQueue.Contains(task))
{
tileLoadQueue.Push(task);
}
}
}
}
finally
{
tileDrawingListLock.ReleaseReaderLock();
}
#region -- starts loader threads if needed --
lock (GThreadPool)
{
while (GThreadPool.Count < GThreadPoolSize)
{
Thread t = new Thread(new ThreadStart(ProcessLoadTask));
{
t.Name = "TileLoader: " + GThreadPool.Count;
t.IsBackground = true;
t.Priority = ThreadPriority.BelowNormal;
}
GThreadPool.Add(t);
Debug.WriteLine("add " + t.Name + " to GThreadPool");
t.Start();
}
}
#endregion
{
LastTileLoadStart = DateTime.Now;
Debug.WriteLine("OnTileLoadStart - at zoom " + Zoom + ", time: " + LastTileLoadStart.TimeOfDay);
}
loadWaitCount = 0;
Monitor.PulseAll(tileLoadQueue);
}
finally
{
Monitor.Exit(tileLoadQueue);
}
updatingBounds = false;
if (OnTileLoadStart != null)
{
OnTileLoadStart();
}
}
/// <summary>
/// Method used to listen for native events from the GPS.
/// </summary>
private void WaitForGpsEvents()
{
//lock (this)
{
bool listening = true;
// allocate 3 handles worth of memory to pass to WaitForMultipleObjects
IntPtr handles = Utils.LocalAlloc(12);
// write the three handles we are listening for.
Marshal.WriteInt32(handles, 0, stopHandle.ToInt32());
Marshal.WriteInt32(handles, 4, deviceStateChangedHandle.ToInt32());
Marshal.WriteInt32(handles, 8, newLocationHandle.ToInt32());
while(listening)
{
int obj = WaitForMultipleObjects(3, handles, 0, -1);
if(obj != waitFailed)
{
switch(obj)
{
case 0:
// we've been signalled to stop
listening = false;
break;
case 1:
// device state has changed
if(deviceStateChanged != null)
{
deviceStateChanged(this, GetDeviceState());
}
break;
case 2:
// location has changed
if(locationChanged != null)
{
locationChanged(this, GetPosition());
}
break;
}
}
}
// free the memory we allocated for the native handles
Utils.LocalFree(handles);
if(newLocationHandle != IntPtr.Zero)
{
CloseHandle(newLocationHandle);
newLocationHandle = IntPtr.Zero;
}
if(deviceStateChangedHandle != IntPtr.Zero)
{
CloseHandle(deviceStateChangedHandle);
deviceStateChangedHandle = IntPtr.Zero;
}
if(stopHandle != IntPtr.Zero)
{
CloseHandle(stopHandle);
stopHandle = IntPtr.Zero;
}
// clear our gpsEventThread so that we can recreate this thread again
// if the events are hooked up again.
gpsEventThread = null;
Debug.WriteLine("gps device stopped...");
}
}
/// <summary>
/// updates map bounds
/// </summary>
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++)
{
var p = CenterTileXYLocation;
p.X += i;
p.Y += j;
#if ContinuesMap
// ----------------------------
if (p.X < minOfTiles.Width)
{
p.X += (maxOfTiles.Width + 1);
}
if (p.X > maxOfTiles.Width)
{
p.X -= (maxOfTiles.Width + 1);
}
// ----------------------------
#endif
if (p.X >= _minOfTiles.Width && p.Y >= _minOfTiles.Height && p.X <= _maxOfTiles.Width &&
p.Y <= _maxOfTiles.Height)
{
var 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(TileDrawingList);
}
else
{
TileDrawingList.Sort();
}
#endregion
}
finally
{
TileDrawingListLock.ReleaseWriterLock();
}
#if NET40
Interlocked.Exchange(ref _loadWaitCount, 0);
#else
Monitor.Enter(TileLoadQueue);
try
{
#endif
TileDrawingListLock.AcquireReaderLock();
try
{
foreach (var p in TileDrawingList)
{
var task = new LoadTask(p.PosXY, Zoom, this);
#if NET40
AddLoadTask(task);
#else
{
if (!TileLoadQueue.Contains(task))
{
TileLoadQueue.Push(task);
}
}
#endif
}
}
finally
{
TileDrawingListLock.ReleaseReaderLock();
}
#if !NET40
#region -- starts loader threads if needed --
lock (_gThreadPool)
{
while (_gThreadPool.Count < GThreadPoolSize)
{
var t = new Thread(TileLoadThread);
{
t.Name = "TileLoader: " + _gThreadPool.Count;
t.IsBackground = true;
t.Priority = ThreadPriority.BelowNormal;
}
_gThreadPool.Add(t);
Debug.WriteLine("add " + t.Name + " to GThreadPool");
t.Start();
}
}
#endregion
#endif
{
_lastTileLoadStart = DateTime.Now;
Debug.WriteLine("OnTileLoadStart - at zoom " + Zoom + ", time: " + _lastTileLoadStart.TimeOfDay);
}
#if !NET40
_loadWaitCount = 0;
Monitor.PulseAll(TileLoadQueue);
}
finally
{
Monitor.Exit(TileLoadQueue);
}
#endif
UpdatingBounds = false;
if (OnTileLoadStart != null)
{
OnTileLoadStart();
}
}
/// <summary>
/// Closes the gps device.
/// </summary>
public void Close()
{
if(gpsHandle != IntPtr.Zero)
{
GPSCloseDevice(gpsHandle);
gpsHandle = IntPtr.Zero;
}
// Set our native stop event so we can exit our event thread.
if(stopHandle != IntPtr.Zero)
{
Win32.EventModify(stopHandle, (int)Win32.EventFlags.SET);
}
// wait exit
if (gpsEventThread != null)
{
quit.WaitOne();
gpsEventThread = null;
}
}
/// <summary>
/// Creates our event thread that will receive native events
/// </summary>
private void CreateGpsEventThread()
{
// we only want to create the thread if we don't have one created already
// and we have opened the gps device
if(gpsEventThread == null && gpsHandle != IntPtr.Zero)
{
// Create and start thread to listen for GPS events
gpsEventThread = new Thread(new System.Threading.ThreadStart(WaitForGpsEvents));
gpsEventThread.IsBackground = false;
gpsEventThread.Name = "GMap.NET GpsEvents";
gpsEventThread.Start();
}
}
/// <summary>
/// live for cache ;}
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void CacheEngineLoop()
{
Debug.WriteLine("CacheEngine: start");
int left = 0;
OnTileCacheStart?.Invoke();
bool startEvent = false;
while (!abortCacheLoop)
{
try
{
CacheQueueItem?task = null;
lock (tileCacheQueue)
{
left = tileCacheQueue.Count;
if (left > 0)
{
task = tileCacheQueue.Dequeue();
}
}
if (task.HasValue)
{
if (startEvent)
{
startEvent = false;
OnTileCacheStart?.Invoke();
}
OnTileCacheProgress?.Invoke(left);
#region -- save --
// check if stream wasn't disposed somehow
if (task.Value.Img != null)
{
Debug.WriteLine("CacheEngine[" + left + "]: storing tile " + task.Value + ", " + task.Value.Img.Length / 1024 + "kB...");
if ((task.Value.CacheType & CacheUsage.First) == CacheUsage.First && PrimaryCache != null)
{
if (cacheOnIdleRead)
{
while (Interlocked.Decrement(ref readingCache) > 0)
{
Thread.Sleep(1000);
}
}
PrimaryCache.PutImageToCache(task.Value.Img, task.Value.Tile.Type, task.Value.Tile.Pos, task.Value.Tile.Zoom);
}
if ((task.Value.CacheType & CacheUsage.Second) == CacheUsage.Second && SecondaryCache != null)
{
if (cacheOnIdleRead)
{
while (Interlocked.Decrement(ref readingCache) > 0)
{
Thread.Sleep(1000);
}
}
SecondaryCache.PutImageToCache(task.Value.Img, task.Value.Tile.Type, task.Value.Tile.Pos, task.Value.Tile.Zoom);
}
task.Value.Clear();
if (!boostCacheEngine)
{
#if PocketPC
Thread.Sleep(3333);
#else
Thread.Sleep(333);
#endif
}
}
else
{
Debug.WriteLine("CacheEngineLoop: skip, tile disposed to early -> " + task.Value);
}
task = null;
#endregion
}
else
{
if (!startEvent)
{
startEvent = true;
OnTileCacheComplete?.Invoke();
}
if (abortCacheLoop || noMapInstances || !WaitForCache.WaitOne(33333, false) || noMapInstances)
{
break;
}
}
}
#if !PocketPC
catch (AbandonedMutexException)
{
break;
}
#endif
catch (Exception ex)
{
Debug.WriteLine("CacheEngineLoop: " + ex.ToString());
}
}
Debug.WriteLine("CacheEngine: stop");
if (!startEvent)
{
OnTileCacheComplete?.Invoke();
}
}
static void ProcessLoadTask(LoadTask task, string ctid)
{
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, out ex);
}
else // ok
{
img = GMaps.Instance.GetImageFrom(tl, task.Pos, task.Zoom, 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 GMap.NET.GPoint((task.Pos.X / Ix), (task.Pos.Y / Ix));
img = GMaps.Instance.GetImageFrom(tl, parentTile, task.Zoom - zoomOffset++, 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();
}
}
}
void tileLoadThread()
{
LoadTask?task = null;
bool stop = false;
#if !PocketPC
Thread ct = Thread.CurrentThread;
string ctid = "Thread[" + ct.ManagedThreadId + "]";
#else
int ctid = 0;
#endif
while (!stop && IsStarted)
{
task = null;
Monitor.Enter(tileLoadQueue);
try
{
while (tileLoadQueue.Count == 0)
{
Debug.WriteLine(ctid + " - Wait " + loadWaitCount + " - " + DateTime.Now.TimeOfDay);
if (++loadWaitCount >= GThreadPoolSize)
{
loadWaitCount = 0;
OnLoadComplete(ctid);
}
if (!IsStarted || false == Monitor.Wait(tileLoadQueue, WaitForTileLoadThreadTimeout, false) || !IsStarted)
{
stop = true;
break;
}
}
if (IsStarted && !stop || tileLoadQueue.Count > 0)
{
task = tileLoadQueue.Pop();
}
}
finally
{
Monitor.Exit(tileLoadQueue);
}
if (task.HasValue && IsStarted)
{
ProcessLoadTask(task.Value, ctid);
}
}
#if !PocketPC
Monitor.Enter(tileLoadQueue);
try
{
Debug.WriteLine("Quit - " + ct.Name);
lock (GThreadPool)
{
GThreadPool.Remove(ct);
}
}
finally
{
Monitor.Exit(tileLoadQueue);
}
#endif
}
/// <summary>
/// live for cache ;}
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void CacheEngineLoop()
{
int left = 0;
if (OnTileCacheStart != null)
{
OnTileCacheStart();
}
bool startEvent = false;
while (!abortCacheLoop)
{
try
{
CacheQueueItem?task = null;
lock (tileCacheQueue)
{
left = tileCacheQueue.Count;
if (left > 0)
{
task = tileCacheQueue.Dequeue();
}
}
if (task.HasValue)
{
if (startEvent)
{
startEvent = false;
if (OnTileCacheStart != null)
{
OnTileCacheStart();
}
}
if (OnTileCacheProgress != null)
{
OnTileCacheProgress(left);
}
#region -- save --
// check if stream wasn't disposed somehow
if (task.Value.Img != null)
{
if ((task.Value.CacheType & CacheUsage.First) == CacheUsage.First && PrimaryCache != null)
{
if (cacheOnIdleRead)
{
while (Interlocked.Decrement(ref readingCache) > 0)
{
Thread.Sleep(1000);
}
}
PrimaryCache.PutImageToCache(task.Value.Img, task.Value.Tile.Type, task.Value.Tile.Pos, task.Value.Tile.Zoom);
}
if ((task.Value.CacheType & CacheUsage.Second) == CacheUsage.Second && SecondaryCache != null)
{
if (cacheOnIdleRead)
{
while (Interlocked.Decrement(ref readingCache) > 0)
{
Thread.Sleep(1000);
}
}
SecondaryCache.PutImageToCache(task.Value.Img, task.Value.Tile.Type, task.Value.Tile.Pos, task.Value.Tile.Zoom);
}
task.Value.Clear();
if (!boostCacheEngine)
{
#if PocketPC
Thread.Sleep(3333);
#else
Thread.Sleep(333);
#endif
}
}
else
{
}
task = null;
#endregion
}
else
{
if (!startEvent)
{
startEvent = true;
if (OnTileCacheComplete != null)
{
OnTileCacheComplete();
}
}
if (abortCacheLoop || noMapInstances || !WaitForCache.WaitOne(33333, false) || noMapInstances)
{
break;
}
}
}
#if !PocketPC
catch (AbandonedMutexException)
{
break;
}
#endif
catch
{
}
}
if (!startEvent)
{
if (OnTileCacheComplete != null)
{
OnTileCacheComplete();
}
}
}
/// <summary>
/// updates map bounds
/// </summary>
void UpdateBounds()
{
if(MapType == NET.MapType.None)
{
return;
}
lock(tileLoadQueue)
{
tileDrawingListLock.AcquireWriterLock();
try
{
#region -- find tiles around --
tileDrawingList.Clear();
for(int i = -sizeOfMapArea.Width; i <= sizeOfMapArea.Width; i++)
{
for(int j = -sizeOfMapArea.Height; j <= sizeOfMapArea.Height; j++)
{
Point p = centerTileXYLocation;
p.X += i;
p.Y += j;
#if ContinuesMap
// ----------------------------
if(p.X < minOfTiles.Width)
{
p.X += (maxOfTiles.Width + 1);
}
if(p.X > maxOfTiles.Width)
{
p.X -= (maxOfTiles.Width + 1);
}
// ----------------------------
#endif
if(p.X >= minOfTiles.Width && p.Y >= minOfTiles.Height && p.X <= maxOfTiles.Width && p.Y <= maxOfTiles.Height)
{
if(!tileDrawingList.Contains(p))
{
tileDrawingList.Add(p);
}
}
}
}
if(GMaps.Instance.ShuffleTilesOnLoad)
{
Stuff.Shuffle<Point>(tileDrawingList);
}
#endregion
foreach(Point p in tileDrawingList)
{
LoadTask task = new LoadTask(p, Zoom);
{
if(!tileLoadQueue.Contains(task))
{
tileLoadQueue.Enqueue(task);
}
}
}
}
finally
{
tileDrawingListLock.ReleaseWriterLock();
}
#region -- starts loader threads if needed --
#if !PocketPC
while(GThreadPool.Count < GThreadPoolSize)
#else
while(GThreadPool.Count < GThreadPoolSize)
#endif
{
Thread t = new Thread(new ThreadStart(ProcessLoadTask));
{
t.Name = "GMap.NET TileLoader: " + GThreadPool.Count;
t.IsBackground = true;
t.Priority = ThreadPriority.BelowNormal;
}
GThreadPool.Add(t);
Debug.WriteLine("add " + t.Name + " to GThreadPool");
t.Start();
}
#endregion
lock(LastTileLoadStartEndLock)
{
LastTileLoadStart = DateTime.Now;
Debug.WriteLine("OnTileLoadStart - at zoom " + Zoom + ", time: " + LastTileLoadStart.TimeOfDay);
}
loadWaitCount = 0;
#if !PocketPC
Monitor.PulseAll(tileLoadQueue);
#else
wait.PulseAll();
#endif
}
if(OnTileLoadStart != null)
{
OnTileLoadStart();
}
}
/// <summary>
/// updates map bounds
/// </summary>
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 ContinuesMap
// ----------------------------
if(p.X < minOfTiles.Width)
{
p.X += (maxOfTiles.Width + 1);
}
if(p.X > maxOfTiles.Width)
{
p.X -= (maxOfTiles.Width + 1);
}
// ----------------------------
#endif
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();
}
Monitor.Enter(tileLoadQueue);
try
{
tileDrawingListLock.AcquireReaderLock();
try
{
foreach(DrawTile p in tileDrawingList)
{
LoadTask task = new LoadTask(p.PosXY, Zoom);
{
if(!tileLoadQueue.Contains(task))
{
tileLoadQueue.Push(task);
}
}
}
}
finally
{
tileDrawingListLock.ReleaseReaderLock();
}
#region -- starts loader threads if needed --
lock(GThreadPool)
{
while(GThreadPool.Count < GThreadPoolSize)
{
Thread t = new Thread(new ThreadStart(ProcessLoadTask));
{
t.Name = "TileLoader: " + GThreadPool.Count;
t.IsBackground = true;
t.Priority = ThreadPriority.BelowNormal;
}
GThreadPool.Add(t);
Debug.WriteLine("add " + t.Name + " to GThreadPool");
t.Start();
}
}
#endregion
{
LastTileLoadStart = DateTime.Now;
Debug.WriteLine("OnTileLoadStart - at zoom " + Zoom + ", time: " + LastTileLoadStart.TimeOfDay);
}
loadWaitCount = 0;
Monitor.PulseAll(tileLoadQueue);
}
finally
{
Monitor.Exit(tileLoadQueue);
}
updatingBounds = false;
if(OnTileLoadStart != null)
{
OnTileLoadStart();
}
}
void ProcessLoadTask()
{
bool invalidate = false;
LoadTask?task = null;
long lastTileLoadTimeMs;
bool stop = false;
#if !PocketPC
Thread ct = Thread.CurrentThread;
string ctid = "Thread[" + ct.ManagedThreadId + "]";
#else
int ctid = 0;
#endif
while (!stop)
{
invalidate = false;
task = null;
lock (tileLoadQueue)
{
while (tileLoadQueue.Count == 0)
{
Debug.WriteLine(ctid + " - Wait " + loadWaitCount + " - " + DateTime.Now.TimeOfDay);
if (++loadWaitCount >= GThreadPoolSize)
{
loadWaitCount = 0;
lock (LastInvalidationLock)
{
LastInvalidation = DateTime.Now;
}
if (OnNeedInvalidation != null)
{
OnNeedInvalidation();
}
lock (LastTileLoadStartEndLock)
{
LastTileLoadEnd = DateTime.Now;
lastTileLoadTimeMs = (long)(LastTileLoadEnd - LastTileLoadStart).TotalMilliseconds;
}
#region -- clear stuff--
{
GMaps.Instance.kiberCacheLock.AcquireWriterLock();
try
{
GMaps.Instance.TilesInMemory.RemoveMemoryOverload();
}
finally
{
GMaps.Instance.kiberCacheLock.ReleaseWriterLock();
}
tileDrawingListLock.AcquireReaderLock();
try
{
Matrix.ClearLevelAndPointsNotIn(Zoom, tileDrawingList);
}
finally
{
tileDrawingListLock.ReleaseReaderLock();
}
}
#endregion
UpdateGroundResolution();
#if UseGC
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
#endif
Debug.WriteLine(ctid + " - OnTileLoadComplete: " + lastTileLoadTimeMs + "ms, MemoryCacheSize: " + GMaps.Instance.MemoryCacheSize + "MB");
if (OnTileLoadComplete != null)
{
OnTileLoadComplete(lastTileLoadTimeMs);
}
}
#if !PocketPC
if (false == Monitor.Wait(tileLoadQueue, WaitForTileLoadThreadTimeout, false))
{
stop = true;
break;
}
#else
wait.Wait();
#endif
}
if (!stop || tileLoadQueue.Count > 0)
{
task = tileLoadQueue.Dequeue();
}
}
if (task.HasValue)
{
try
{
#region -- execute --
var m = Matrix.GetTileWithReadLock(task.Value.Zoom, task.Value.Pos);
if (m == null || m.Overlays.Count == 0)
{
Debug.WriteLine(ctid + " - Fill empty TileMatrix: " + task);
Tile t = new Tile(task.Value.Zoom, task.Value.Pos);
var layers = GMaps.Instance.GetAllLayersOfType(MapType);
foreach (MapType tl in layers)
{
int retry = 0;
do
{
PureImage img;
Exception ex;
// tile number inversion(BottomLeft -> TopLeft) for pergo maps
if (tl == MapType.PergoTurkeyMap)
{
img = GMaps.Instance.GetImageFrom(tl, new Point(task.Value.Pos.X, maxOfTiles.Height - task.Value.Pos.Y), task.Value.Zoom, out ex);
}
else // ok
{
img = GMaps.Instance.GetImageFrom(tl, task.Value.Pos, task.Value.Zoom, out ex);
}
if (img != null)
{
lock (t.Overlays)
{
t.Overlays.Add(img);
}
break;
}
else
{
if (ex != null)
{
lock (FailedLoads)
{
if (!FailedLoads.ContainsKey(task.Value))
{
FailedLoads.Add(task.Value, ex);
if (OnEmptyTileError != null)
{
if (!RaiseEmptyTileError)
{
RaiseEmptyTileError = true;
OnEmptyTileError(task.Value.Zoom, task.Value.Pos);
}
}
}
}
}
if (RetryLoadTile > 0)
{
Debug.WriteLine(ctid + " - ProcessLoadTask: " + task + " -> empty tile, retry " + retry);
{
Thread.Sleep(1111);
}
}
}
}while(++retry < RetryLoadTile);
}
if (t.Overlays.Count > 0)
{
Matrix.SetTile(t);
}
else
{
t.Clear();
t = null;
}
layers = null;
}
#endregion
}
catch (Exception ex)
{
Debug.WriteLine(ctid + " - ProcessLoadTask: " + ex.ToString());
}
finally
{
lock (LastInvalidationLock)
{
invalidate = ((DateTime.Now - LastInvalidation).TotalMilliseconds > 111);
if (invalidate)
{
LastInvalidation = DateTime.Now;
}
}
if (invalidate)
{
if (OnNeedInvalidation != null)
{
OnNeedInvalidation();
}
}
#if DEBUG
//else
//{
// lock(LastInvalidationLock)
// {
// Debug.WriteLine(ctid + " - SkipInvalidation, Delta: " + (DateTime.Now - LastInvalidation).TotalMilliseconds + "ms");
// }
//}
#endif
}
}
}
#if !PocketPC
lock (tileLoadQueue)
{
Debug.WriteLine("Quit - " + ct.Name);
GThreadPool.Remove(ct);
}
#endif
}
