public override bool Remove(GridVector location, int zoomlevel)
{
bool removed = m_MaptileService.Remove(location, zoomlevel);
while (++zoomlevel < MaxZoomLevel)
{
location = location.AlignToZoomlevel(zoomlevel);
m_MaptileService.Remove(location, zoomlevel);
}
return(removed);
}
public override void Store(MaptileData data)
{
m_MaptileService.Store(data);
int zoomlevel = data.ZoomLevel;
GridVector location = data.Location;
while (++zoomlevel < MaxZoomLevel)
{
location = location.AlignToZoomlevel(zoomlevel);
m_MaptileService.Remove(location, zoomlevel);
}
}
public override bool TryGetValue(GridVector rawlocation, int zoomlevel, out MaptileData data)
{
data = null;
if (zoomlevel < 1)
{
return(false);
}
GridVector location = rawlocation.AlignToZoomlevel(zoomlevel);
if (m_MaptileService.TryGetValue(location, zoomlevel, out data))
{
return(true);
}
else if (zoomlevel > MaxZoomLevel || zoomlevel < 2)
{
return(false);
}
var zoomsize = (uint)(256 << (zoomlevel - 1));
MaptileData map00;
MaptileData map01;
MaptileData map10;
MaptileData map11;
MaptileData outmap;
if (!TryGetValue(location, zoomlevel - 1, out map00))
{
map00 = null;
}
GridVector v = location;
GridVector v2 = location;
v2.X += zoomsize / 2;
v2.Y += zoomsize / 2;
if (m_MaptileService.TryGetValue(v, zoomlevel, out outmap))
{
List <MaptileInfo> upperInfo = m_MaptileService.GetUpdateTimes(v, v2, zoomlevel - 1);
Date ownUpdate = outmap.LastUpdate;
bool haveNewer = false;
foreach (MaptileInfo up in upperInfo)
{
if (up.LastUpdate.AsULong > ownUpdate.AsULong)
{
haveNewer = true;
}
}
if (!haveNewer)
{
return(true);
}
}
else
{
outmap = new MaptileData
{
Location = location,
ZoomLevel = zoomlevel,
};
}
outmap.LastUpdate = Date.Now;
outmap.ContentType = "image/jpeg";
v.Y += zoomsize / 2;
if (!TryGetValue(v, zoomlevel - 1, out map01))
{
map01 = null;
}
v = location;
v.X += zoomsize / 2;
if (!TryGetValue(location, zoomlevel - 1, out map10))
{
map10 = null;
}
v = location;
v.X += zoomsize / 2;
v.Y += zoomsize / 2;
if (!TryGetValue(location, zoomlevel - 1, out map11))
{
map11 = null;
}
using (var bmp = new Bitmap(256, 256, PixelFormat.Format24bppRgb))
{
using (Graphics gfx = Graphics.FromImage(bmp))
{
gfx.FillRectangle(Brushes.Blue, new Rectangle(0, 0, 256, 256));
if (map00 != null)
{
using (Image img = FromMaptileData(map00))
{
gfx.DrawImage(img, 0, 128, 128, 128);
}
}
if (map01 != null)
{
using (Image img = FromMaptileData(map01))
{
gfx.DrawImage(img, 0, 0, 128, 128);
}
}
if (map10 != null)
{
using (Image img = FromMaptileData(map10))
{
gfx.DrawImage(img, 128, 128, 128, 128);
}
}
if (map11 != null)
{
using (Image img = FromMaptileData(map11))
{
gfx.DrawImage(img, 128, 0, 128, 128);
}
}
}
using (var ms = new MemoryStream())
{
bmp.Save(ms, ImageFormat.Jpeg);
outmap.Data = ms.ToArray();
}
}
m_MaptileService.Store(outmap);
data = outmap;
return(true);
}