public override TileData GetTile(TiledMapSession.Key key, IMapRenderer renderer, System.Threading.WaitCallback callback, object state)
{
TileData tileData = null;
// try to get the tile
if (TileCache.TryGetValue(key, out tileData))
return tileData;
// check if it is in the file cache
string tilePath = GetTilePathForKey(key);
if (File.Exists(tilePath))
{
FileInfo finfo = new FileInfo(tilePath);
if (DateTime.Now - finfo.CreationTime > new TimeSpan(2, 0, 0, 0))
{
// tile is old, expire it
File.Delete(tilePath);
}
else
{
try
{
using (FileStream fstream = new FileStream(tilePath, FileMode.Open))
{
IMapDrawable bitmap = renderer.GetBitmapFromStream(this, fstream);
return TileCache[key] = new TileData(bitmap);
}
}
catch (Exception)
{
File.Delete(tilePath);
}
}
}
// check if its a bad key
Uri uri = GetUriForKey(key);
if (uri != null)
{
// mark tile as being downloaded
TileCache[key] = null;
GetTileData data = new GetTileData();
data.Renderer = renderer;
data.Key = key;
data.Callback = callback;
data.State = state;
data.Uri = uri;
//ThreadPool.QueueUserWorkItem(new WaitCallback(GetTile), data);
GetTile(data);
}
return tileData;
}
public override TileData GetTile(TiledMapSession.Key key, IMapRenderer renderer, System.Threading.WaitCallback callback, object state)
{
TileData tileData = null;
// try to get the tile
if (TileCache.TryGetValue(key, out tileData))
{
if (tileData != InvalidTile)
{
return(tileData);
}
TileCache.Remove(key);
}
// check if it is in the file cache
string tilePath = GetTilePathForKey(key);
if (File.Exists(tilePath))
{
FileInfo finfo = new FileInfo(tilePath);
if (DateTime.Now - finfo.CreationTime > new TimeSpan(2, 0, 0, 0))
{
// tile is old, expire it
File.Delete(tilePath);
}
else
{
TileCache[key] = null;
ThreadPool.QueueUserWorkItem((o) =>
{
try
{
using (FileStream fstream = new FileStream(tilePath, FileMode.Open))
{
IMapDrawable bitmap = renderer.GetBitmapFromStream(this, fstream);
TileCache[key] = new TileData(bitmap);
if (callback != null)
{
callback(state);
}
}
}
catch (Exception)
{
File.Delete(tilePath);
}
});
return(null);
}
}
// check if its a bad key
Uri uri = GetUriForKey(key);
if (uri != null)
{
// mark tile as being downloaded
TileCache[key] = null;
GetTileData data = new GetTileData();
data.Renderer = renderer;
data.Key = key;
data.Callback = callback;
data.State = state;
data.Uri = uri;
ThreadPool.QueueUserWorkItem(new WaitCallback(GetTile), data);
//GetTile(data);
}
return(tileData);
}
public override TileData GetTile(TiledMapSession.Key key, IMapRenderer renderer, System.Threading.WaitCallback callback, object state)
{
// make sure there's something to blend
if (mySessions.Count == 0)
return null;
// see if we need to update this tile at all
int currentBlend = 0;
if (mySessionBlend.TryGetValue(key, out currentBlend) && currentBlend == myTotalBlend)
return TileCache[key];
// see how many tiles we can blend
int canBlend = 0;
for (int i = 0; i < mySessions.Count; i++)
{
if (!mySessionEnabled[i])
continue;
TileData data = mySessions[i].GetTile(key, renderer, callback, state);
if (data != null && data.Bitmap != null)
canBlend++;
}
// if there's nothing new to blend, don't
if (canBlend == currentBlend)
return null;
mySessionBlend[key] = canBlend;
// get the target bitmap ready
if (RefreshBitmap == null)
throw new InvalidOperationException("You must provide a RefreshBitmap");
StandardBitmap refreshBitmap = RefreshBitmap as StandardBitmap;
int width = refreshBitmap.Width;
int height = refreshBitmap.Height;
StandardBitmap bitmap = new StandardBitmap(new Bitmap(width, height));
using (Graphics graphics = Graphics.FromImage(bitmap.Bitmap))
{
refreshBitmap.Draw(graphics, new Rectangle(0, 0, width, height), new Rectangle(0, 0, width, height));
}
// draw the bitmaps
using (Graphics graphics = Graphics.FromImage(bitmap.Bitmap))
{
for (int i = 0; i < mySessions.Count; i++)
{
TiledMapSession session = mySessions[i];
if (!mySessionEnabled[i])
continue;
TileData tile = mySessions[i].GetTile(key, renderer, callback, state);
if (tile == null)
continue;
IGraphicsDrawable tileBitmap = tile.Bitmap as IGraphicsDrawable;
tileBitmap.Draw(graphics, new Rectangle(0, 0, 256, 256), new Rectangle(0, 0, 256, 256));
if (ClearBlendedTiles && canBlend == myTotalBlend)
{
tileBitmap.Dispose();
mySessions[i].TileCache.Remove(key);
}
}
}
TileData ret;
if (!TileCache.TryGetValue(key, out ret))
{
ret = new TileData();
TileCache.Add(key, ret);
}
else if (ret.Bitmap != null)
{
ret.Bitmap.Dispose();
ret.Bitmap = null;
}
// TODO: optimize to do a lock/read load
MemoryStream mem = new MemoryStream();
bitmap.Bitmap.Save(mem, System.Drawing.Imaging.ImageFormat.Bmp);
mem.Seek(0, SeekOrigin.Begin);
ret.Bitmap = myRenderer.LoadBitmap(mem, false);
return ret;
}
public int DrawMap(IMapRenderer renderer, int x, int y, int width, int height, WaitCallback callback, object state)
{
int unavailable = 0;
// approximate the the top left tile (it may be off by 1), but the loop
// below will kept it from being drawn
int midX = x + width / 2 - myCenterOffset.X;
int midY = y + height / 2 - myCenterOffset.Y;
int xTiles = (midX - x) / 256 + 1;
int yTiles = (midY - y) / 256 + 1;
Key currentXKey = new Key(myCenterTile.X - xTiles, myCenterTile.Y - yTiles, myZoom);
int xStart = midX - xTiles * 256;
int yStart = midY - yTiles * 256;
Rectangle rect = new Rectangle(x, y, width, height);
int tickCount = Environment.TickCount;
for (int currentX = xStart; currentX < x + width; currentX += 256, currentXKey.X++)
{
Key key = currentXKey;
for (int currentY = yStart; currentY < y + height; currentY += 256, key.Y++)
{
IMapDrawable tile = null;
// find the intersect region of the tile that we are drawing
Rectangle tileRect = new Rectangle(currentX, currentY, 256, 256);
tileRect.Intersect(rect);
Rectangle sourceRect = new Rectangle(tileRect.X - currentX, tileRect.Y - currentY, tileRect.Width, tileRect.Height);
// dont draw off the map tiles
if (!key.IsValid)
{
// dont draw gray rect if we're drawing transparent
if (!HasAlpha)
{
renderer.FillRectangle(BackColor, tileRect);
}
continue;
}
// first try to get the tile from the tileData
TileData tileData = GetTile(key, renderer, callback, state);
if (tileData != null)
{
tile = tileData.Bitmap;
tileData.LastUsed = tickCount;
}
if (tile == null)
{
// tile not available, so try to generate a tile from child tiles
unavailable++;
Key childKey = new Key(key.X * 2, key.Y * 2, key.Zoom + 1);
Key tl = childKey;
Key tr = new Key(childKey.X + 1, childKey.Y, childKey.Zoom);
Key br = new Key(childKey.X + 1, childKey.Y + 1, childKey.Zoom);
Key bl = new Key(childKey.X, childKey.Y + 1, childKey.Zoom);
TileData tld;
TileData trd;
TileData bld;
TileData brd;
// see if the children are available
// we also need to null check, because they could be loading
if (TileCache.TryGetValue(tl, out tld) && TileCache.TryGetValue(tr, out trd) && TileCache.TryGetValue(br, out brd) && TileCache.TryGetValue(bl, out bld) &&
tld != null && trd != null && bld != null & brd != null &&
tld.Bitmap != null && trd.Bitmap != null && bld.Bitmap != null && brd.Bitmap != null)
{
// children are available, so mark them as recently used
tld.LastUsed = trd.LastUsed = bld.LastUsed = brd.LastUsed = tickCount;
// calculate the destination rects of each child tile
Rectangle tlr = new Rectangle(currentX, currentY, 128, 128);
Rectangle trr = new Rectangle(currentX + 128, currentY, 128, 128);
Rectangle blr = new Rectangle(currentX, currentY + 128, 128, 128);
Rectangle brr = new Rectangle(currentX + 128, currentY + 128, 128, 128);
tlr.Intersect(rect);
trr.Intersect(rect);
blr.Intersect(rect);
brr.Intersect(rect);
// calculate the source rect of each child tile
Rectangle tlsr = new Rectangle(tlr.X - currentX, tlr.Y - currentY, tlr.Width * 2, tlr.Height * 2);
Rectangle trsr = new Rectangle(trr.X - currentX - 128, trr.Y - currentY, trr.Width * 2, trr.Height * 2);
Rectangle blsr = new Rectangle(blr.X - currentX, blr.Y - currentY - 128, blr.Width * 2, blr.Height * 2);
Rectangle brsr = new Rectangle(brr.X - currentX - 128, brr.Y - currentY - 128, brr.Width * 2, brr.Height * 2);
// don't attempt to draw tiles that we don't need to
if (tlsr.Width > 0 && tlsr.Height > 0)
{
renderer.Draw(tld.Bitmap, tlr, tlsr);
}
if (trsr.Width > 0 && trsr.Height > 0)
{
renderer.Draw(trd.Bitmap, trr, trsr);
}
if (blsr.Width > 0 && blsr.Height > 0)
{
renderer.Draw(bld.Bitmap, blr, blsr);
}
if (brsr.Width > 0 && brsr.Height > 0)
{
renderer.Draw(brd.Bitmap, brr, brsr);
}
continue;
}
else
{
// can't generate from children, so try generating one of the parents
Key parent = key;
Rectangle parentRect = sourceRect;
TileData parentData = null;
while (parent.Zoom >= 0 && parentData == null)
{
parentRect.Width /= 2;
parentRect.Height /= 2;
parentRect.X /= 2;
parentRect.Y /= 2;
if (parent.X % 2 == 1)
{
parentRect.X += 128;
}
if (parent.Y % 2 == 1)
{
parentRect.Y += 128;
}
parent.X /= 2;
parent.Y /= 2;
parent.Zoom--;
TileCache.TryGetValue(parent, out parentData);
}
if (parentData != null && parentData.Bitmap != null)
{
// mark this tile as used recently
parentData.LastUsed = tickCount;
if (tileRect.Width > 0 && tileRect.Height > 0)
{
renderer.Draw(parentData.Bitmap, tileRect, parentRect);
}
continue;
}
else
{
// tile is being downloaded, and we have no parent or child images we can use to draw a temp
// image. let's try to use a refresh bitmap.
// tile is not available, and this is a transparent draw,
// so dont draw at all
if (HasAlpha)
{
continue;
}
if ((tile = RefreshBitmap) == null)
{
renderer.FillRectangle(BackColor, tileRect);
continue;
}
}
}
}
if (tile != null && tileRect.Width > 0 && tileRect.Height > 0)
{
renderer.Draw(tile, tileRect, sourceRect);
}
}
}
int pixelLevelZoom = myZoom + 8;
int centerXReference = myCenterTile.X << 8;
int centerYReference = myCenterTile.Y << 8;
Geocode tlGeo = PointToGeocode(new Point(Math.Max(centerXReference + myCenterOffset.X - width / 2, 0), Math.Max(centerYReference + myCenterOffset.Y - height / 2, 0)), pixelLevelZoom);
Geocode brGeo = PointToGeocode(new Point(Math.Min(centerXReference + myCenterOffset.X + width / 2, 1 << pixelLevelZoom), Math.Min(centerYReference + myCenterOffset.Y + height / 2, 1 << pixelLevelZoom)), pixelLevelZoom);
int adjustX = midX - centerXReference;
int adjustY = midY - centerYReference;
foreach (Route route in myRoutes)
{
List <Point> points = new List <Point>();
Geocode lastOffscreenPoint = Geocode.Null;
for (int i = 0; i < route.PolyLine.Length; i++)
{
Geocode geocode = route.PolyLine[i];
if (myLevelToZoom[route.Levels[i]] > myZoom)
{
continue;
}
// check if we're drawing off the screen
if (!GeocodeBoxContains(tlGeo, brGeo, geocode))
{
// if we're drawing from on screen to off screen, draw it, but note that
// we are now off screen
if (lastOffscreenPoint == Geocode.Null)
{
points.Add(GeocodeToScreen(geocode, pixelLevelZoom, adjustX, adjustY));
}
lastOffscreenPoint = geocode;
continue;
}
// draw in from off the screen if necessary
if (lastOffscreenPoint != Geocode.Null)
{
points.Add(GeocodeToScreen(lastOffscreenPoint, pixelLevelZoom, adjustX, adjustY));
}
// note that we are now in screen space
lastOffscreenPoint = Geocode.Null;
points.Add(GeocodeToScreen(geocode, pixelLevelZoom, adjustX, adjustY));
}
if (points.Count > 1)
{
renderer.DrawLines(route.LineWidth, Color.Cyan, points.ToArray());
}
}
foreach (IMapOverlay overlay in Overlays)
{
DrawAtGeocode(tlGeo, brGeo, renderer, overlay.Geocode, pixelLevelZoom, adjustX + overlay.Offset.X, adjustY + overlay.Offset.Y, overlay.Drawable);
}
return(unavailable);
}
public override TileData GetTile(TiledMapSession.Key key, IMapRenderer renderer, System.Threading.WaitCallback callback, object state)
{
// make sure there's something to blend
if (mySessions.Count == 0)
{
return(null);
}
// see if we need to update this tile at all
int currentBlend = 0;
if (mySessionBlend.TryGetValue(key, out currentBlend) && currentBlend == myTotalBlend)
{
return(TileCache[key]);
}
// see how many tiles we can blend
int canBlend = 0;
for (int i = 0; i < mySessions.Count; i++)
{
if (!mySessionEnabled[i])
{
continue;
}
TileData data = mySessions[i].GetTile(key, renderer, callback, state);
if (data != null && data.Bitmap != null)
{
canBlend++;
}
}
// if there's nothing new to blend, don't
if (canBlend == currentBlend)
{
return(null);
}
mySessionBlend[key] = canBlend;
// get the target bitmap ready
if (RefreshBitmap == null)
{
throw new InvalidOperationException("You must provide a RefreshBitmap");
}
StandardBitmap refreshBitmap = RefreshBitmap as StandardBitmap;
int width = refreshBitmap.Width;
int height = refreshBitmap.Height;
StandardBitmap bitmap = new StandardBitmap(new Bitmap(width, height));
using (Graphics graphics = Graphics.FromImage(bitmap.Bitmap))
{
refreshBitmap.Draw(graphics, new Rectangle(0, 0, width, height), new Rectangle(0, 0, width, height));
}
// draw the bitmaps
using (Graphics graphics = Graphics.FromImage(bitmap.Bitmap))
{
for (int i = 0; i < mySessions.Count; i++)
{
TiledMapSession session = mySessions[i];
if (!mySessionEnabled[i])
{
continue;
}
TileData tile = mySessions[i].GetTile(key, renderer, callback, state);
if (tile == null)
{
continue;
}
IGraphicsDrawable tileBitmap = tile.Bitmap as IGraphicsDrawable;
tileBitmap.Draw(graphics, new Rectangle(0, 0, 256, 256), new Rectangle(0, 0, 256, 256));
if (ClearBlendedTiles && canBlend == myTotalBlend)
{
tileBitmap.Dispose();
mySessions[i].TileCache.Remove(key);
}
}
}
TileData ret;
if (!TileCache.TryGetValue(key, out ret))
{
ret = new TileData();
TileCache.Add(key, ret);
}
else if (ret.Bitmap != null)
{
ret.Bitmap.Dispose();
ret.Bitmap = null;
}
// TODO: optimize to do a lock/read load
MemoryStream mem = new MemoryStream();
bitmap.Bitmap.Save(mem, System.Drawing.Imaging.ImageFormat.Bmp);
mem.Seek(0, SeekOrigin.Begin);
ret.Bitmap = myRenderer.LoadBitmap(mem, false);
return(ret);
}