/// <summary>
/// gets image from tile server
/// </summary>
/// <param name="provider"></param>
/// <param name="pos"></param>
/// <param name="zoom"></param>
/// <returns></returns>
public PureImage GetImageFrom(GMapProvider provider, GPoint pos, int zoom, GPoint corepos, out Exception result)
{
PureImage ret = null;
result = null;
//GPoint corepos1 = new GPoint(corepos.X / 256, corepos.Y / 256);
GPoint corepos2 = new GPoint(corepos.X, corepos.Y - 1);
GPoint corepos3 = new GPoint(corepos.X + 1, corepos.Y - 1);
GPoint corepos4 = new GPoint(corepos.X + 1, corepos.Y);
try
{
var rtile = new RawTile(provider.DbId, pos, zoom);
//let't check memmory first
// if (UseMemoryCache)
// {
// var m = MemoryCache.GetTileFromMemoryCache(rtile);
// if (m != null)
// {
// if (GMapProvider.TileImageProxy != null)
// {
// ret = GMapProvider.TileImageProxy.FromArray(m);
// if (ret == null)
// {
//#if DEBUG
// Debug.WriteLine("Image disposed in MemoryCache o.O, should never happen ;} " + new RawTile(provider.DbId, pos, zoom));
// if (Debugger.IsAttached)
// {
// Debugger.Break();
// }
//#endif
// m = null;
// }
// }
// }
// }
if (ret == null)
{
if (Mode != AccessMode.ServerOnly && !provider.BypassCache)
{
if (PrimaryCache != null)
{
// hold writer for 5s
//if (cacheOnIdleRead)
//{
// Interlocked.Exchange(ref readingCache, 5);
//}
if (pos == corepos || pos == corepos2 || pos == corepos3 || pos == corepos4)//
{
CacheLocator.Location = @"D:\LOG\ProgramFiles\MapDownloader\MapCache";
//CacheLocator.Location = @"D:\LOG\CODE\MapDB";
provider = GMapProviders.AMapSateliteMap;
ret = PrimaryCache.GetImageFromCache(1542757547, pos, zoom);//provider1.DbId
}
else
{
CacheLocator.Location = @"D:\LOG\CODE\MapDB";
//CacheLocator.Location = @"D:\LOG\ProgramFiles\MapDownloader\MapCache";
provider = GMapProviders.GoogleChinaSatelliteMap;
ret = PrimaryCache.GetImageFromCache(provider.DbId, pos, zoom);
}
//ret = PrimaryCache.GetImageFromCache(provider.DbId, pos, zoom);//
//if (ret != null)
//{
// if (UseMemoryCache)
// {
// MemoryCache.AddTileToMemoryCache(rtile, ret.Data.GetBuffer());
// }
// return ret;
//}
}
//if (SecondaryCache != null)
//{
// // hold writer for 5s
// if (cacheOnIdleRead)
// {
// Interlocked.Exchange(ref readingCache, 5);
// }
// ret = SecondaryCache.GetImageFromCache(provider.DbId, pos, zoom);
// if (ret != null)
// {
// if (UseMemoryCache)
// {
// MemoryCache.AddTileToMemoryCache(rtile, ret.Data.GetBuffer());
// }
// EnqueueCacheTask(new CacheQueueItem(rtile, ret.Data.GetBuffer(), CacheUsage.First));
// return ret;
// }
//}
}
//if (Mode != AccessMode.CacheOnly)
//{
// ret = provider.GetTileImage(pos, zoom);
// {
// // Enqueue Cache
// if (ret != null)
// {
// if (UseMemoryCache)
// {
// MemoryCache.AddTileToMemoryCache(rtile, ret.Data.GetBuffer());
// }
// if (Mode != AccessMode.ServerOnly && !provider.BypassCache)
// {
// EnqueueCacheTask(new CacheQueueItem(rtile, ret.Data.GetBuffer(), CacheUsage.Both));
// }
// }
// }
//}
//else
//{
// result = noDataException;
//}
}
}
catch (Exception ex)
{
result = ex;
ret = null;
Debug.WriteLine("GetImageFrom: " + ex.ToString());
}
return(ret);
}
// ...
internal byte[] GetTileFromMemoryCache(RawTile tile)
{
kiberCacheLock.AcquireReaderLock();
try
{
if (TilesInMemory.TryGetValue(tile, out byte[] ret))
public CacheQueueItem(RawTile tile, byte[] Img, CacheUsage cacheType)
{
this.Tile = tile;
this.Img = Img;
this.CacheType = cacheType;
}