private byte[] GetCompactTile(IServiceRequestContext context, TileServiceMetadata metadata, int epsg, double scale, int row, int col, string format, GridOrientation orientation)
{
if (!metadata.EPSGCodes.Contains(epsg))
{
throw new ArgumentException("Wrong epsg argument");
}
if (orientation != GridOrientation.UpperLeft)
{
throw new ArgumentException("Compact Tiles Orientation must bei Upper Left!");
}
scale = metadata.Scales.GetScale(scale);
if (scale <= 0.0)
{
throw new ArgumentException("Wrong scale argument");
}
//IEnvelope bounds = metadata.GetEGPSEnvelope(epsg);
//if (bounds == null || bounds.Width == 0.0 || bounds.Height == 0.0)
// throw new Exception("No bounds defined for EPSG:" + epsg);
IPoint origin = metadata.GetOriginUpperLeft(epsg);
if (origin == null)
{
throw new Exception("No origin defined for EPSG:" + epsg);
}
format = format.ToLower();
if (format != ".png" && format != ".jpg")
{
throw new Exception("Unsupported image format");
}
if (format == ".png" && metadata.FormatPng == false)
{
throw new Exception("Format image/png not supported");
}
if (format == ".jpg" && metadata.FormatJpg == false)
{
throw new Exception("Format image/jpeg no supported");
}
string path = _mapServer.TileCachePath + @"\" + context.ServiceMap.Name + @"\_alllayers\compact\" +
TileServiceMetadata.ScalePath(orientation, epsg, scale);
string compactTileName = CompactTileName(row, col);
string bundleFilename = path + @"\" + compactTileName + ".tilebundle";
string bundleDoneFilename = path + @"\" + compactTileName + ".tilebundle.done";
string bundleCalcFilename = path + @"\" + compactTileName + ".tilebundle.calc";
if (new FileInfo(bundleFilename).Exists)
{
return(GetCompactTileBytes(context, path, row, col, format));
}
if (IsDirectoryEmpty(path))
{
#region On The Fly
using (IServiceMap map = context.ServiceMap)
{
ISpatialReference sRef = SpatialReference.FromID("epsg:" + epsg);
map.Display.SpatialReference = sRef;
map.Display.dpi = metadata.Dpi;
map.Display.iWidth = metadata.TileWidth;
map.Display.iHeight = metadata.TileHeight;
double res = (double)scale / (metadata.Dpi / 0.0254);
if (map.Display.MapUnits != GeoUnits.Meters)
{
GeoUnitConverter converter = new GeoUnitConverter();
res = converter.Convert(res, GeoUnits.Meters, map.Display.MapUnits);
}
origin = orientation == GridOrientation.UpperLeft ? metadata.GetOriginUpperLeft(epsg) : metadata.GetOriginLowerLeft(epsg);
double H = metadata.TileHeight * res;
double y = (orientation == GridOrientation.UpperLeft ?
origin.Y - H * (row + 1) :
origin.Y + H * row);
double W = metadata.TileWidth * res;
double x = origin.X + W * col;
map.Display.ZoomTo(new Envelope(x, y, x + W, y + H));
map.Render();
bool maketrans = map.Display.MakeTransparent;
map.Display.MakeTransparent = true;
MemoryStream ms = new MemoryStream();
map.SaveImage(ms, format == ".jpg" ? System.Drawing.Imaging.ImageFormat.Jpeg : System.Drawing.Imaging.ImageFormat.Png);
map.Display.MakeTransparent = maketrans;
return(ms.ToArray());
}
#endregion
#region Tile from Existing UpLevel Tiles (Vorteil Resampling wird nicht von Browser erledigt, ist meistens Fast -> hier Nearstneigbor)
int level2 = metadata.Scales.IndexOf(scale);
if (level2 <= 0)
{
return(null);
}
using (IServiceMap map = context.ServiceMap)
{
double res = (double)scale / (metadata.Dpi / 0.0254);
if (map.Display.MapUnits != GeoUnits.Meters)
{
GeoUnitConverter converter = new GeoUnitConverter();
res = converter.Convert(res, GeoUnits.Meters, map.Display.MapUnits);
}
double H = metadata.TileHeight * res;
double y = origin.Y - H * (row + 1);
double W = metadata.TileWidth * res;
double x = origin.X + W * col;
while (true)
{
if (level2 <= 0)
{
break;
}
double scale2 = metadata.Scales[level2 - 1];
string path2 = _mapServer.TileCachePath + @"\" + context.ServiceMap.Name + @"\_alllayers\compact\" +
TileServiceMetadata.ScalePath(orientation, epsg, scale2);
if (IsDirectoryEmpty(path2))
{
level2--;
continue;
}
double res2 = scale2 / (metadata.Dpi / 0.0254);
double W2 = metadata.TileWidth * res2;
double H2 = metadata.TileHeight * res2;
int col2_0 = (int)Math.Floor((x - origin.X) / W2);
int row2_0 = (int)Math.Floor((origin.Y - (y + H)) / H2);
int col2_1 = (int)Math.Floor((x + W - origin.X) / W2);
int row2_1 = (int)Math.Floor((origin.Y - y) / H2);
double x2_0 = origin.X + W2 * col2_0,
y2_0 = origin.Y - H2 * (row2_1 + 1);
double W20 = Math.Abs(col2_1 - col2_0 + 1) * W2,
H20 = Math.Abs(row2_1 - row2_0 + 1) * H2;
using (Bitmap bm = new Bitmap(Math.Abs(col2_1 - col2_0 + 1) * metadata.TileWidth, Math.Abs(row2_1 - row2_0 + 1) * metadata.TileHeight))
using (Graphics gr = Graphics.FromImage(bm))
{
for (int r2 = row2_0; r2 <= row2_1; r2++)
{
for (int c2 = col2_0; c2 <= col2_1; c2++)
{
byte[] buffer = GetCompactTileBytes(context, path2, r2, c2, format);
if (buffer != null && buffer.Length > 0)
{
MemoryStream ms = new MemoryStream(buffer);
var tileImage = Image.FromStream(ms);
gr.DrawImage(tileImage, new PointF((c2 - col2_0) * metadata.TileWidth, (r2 - row2_0) * metadata.TileHeight));
}
}
}
float imageX = (float)((x - x2_0) / W20 * (double)bm.Width);
float imageY = bm.Height - (float)((y - y2_0) / H20 * (double)bm.Height);
float imageW = (float)((double)metadata.TileWidth * res / res2);
float imageH = (float)((double)metadata.TileHeight * res / res2);
using (Bitmap outputBm = new Bitmap(metadata.TileWidth, metadata.TileHeight))
using (Graphics outputGr = Graphics.FromImage(outputBm))
{
outputGr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
outputGr.DrawImage(bm,
new RectangleF(-.5f, -.5f, (float)outputBm.Width + 1f, (float)outputBm.Height + 1f),
new RectangleF(imageX, imageY - imageH, imageW, imageH),
GraphicsUnit.Pixel);
MemoryStream output = new MemoryStream();
outputBm.Save(output, format == ".png" ? ImageFormat.Png : ImageFormat.Jpeg);
return(output.ToArray());
}
}
}
}
#endregion
}
return(null);
}
private void GetTile(IServiceRequestContext context, TileServiceMetadata metadata, int epsg, double scale, int row, int col, string format, GridOrientation orientation, bool renderOnTheFly)
{
if (!metadata.EPSGCodes.Contains(epsg))
{
throw new ArgumentException("Wrong epsg argument");
}
//if (!metadata.Scales.Contains(scale))
// throw new ArgumentException("Wrong scale argument");
scale = metadata.Scales.GetScale(scale);
if (scale <= 0.0)
{
throw new ArgumentException("Wrong scale argument");
}
//IEnvelope bounds = metadata.GetEPSGEnvelope(epsg);
//if (bounds == null || bounds.Width == 0.0 || bounds.Height == 0.0)
// throw new Exception("No bounds defined for EPSG:" + epsg);
format = format.ToLower();
if (format != ".png" && format != ".jpg")
{
throw new Exception("Unsupported image format");
}
if (format == ".png" && metadata.FormatPng == false)
{
throw new Exception("Format image/png not supported");
}
if (format == ".jpg" && metadata.FormatJpg == false)
{
throw new Exception("Format image/jpeg no supported");
}
string path = _mapServer.TileCachePath + @"\" + context.ServiceMap.Name + @"\_alllayers\" +
TileServiceMetadata.TilePath(orientation, epsg, scale, row, col) + format;
if ((orientation == GridOrientation.UpperLeft && metadata.UpperLeftCacheTiles) ||
(orientation == GridOrientation.LowerLeft && metadata.LowerLeftCacheTiles))
{
FileInfo fi = new FileInfo(path);
if (fi.Exists)
{
context.ServiceRequest.Response = fi.FullName;
return;
}
else if (!renderOnTheFly && !metadata.RenderTilesOnTheFly)
{
return; // Empty
}
if (!fi.Directory.Exists)
{
fi.Directory.Create();
}
}
else
{
path = _mapServer.OutputPath + @"\tile_" + Guid.NewGuid().ToString("N").ToLower() + format;
}
ISpatialReference sRef = SpatialReference.FromID("epsg:" + epsg);
using (IServiceMap map = context.ServiceMap)
{
map.Display.SpatialReference = sRef;
map.Display.dpi = metadata.Dpi;
map.Display.iWidth = metadata.TileWidth;
map.Display.iHeight = metadata.TileHeight;
double res = (double)scale / (metadata.Dpi / 0.0254);
if (map.Display.MapUnits != GeoUnits.Meters)
{
GeoUnitConverter converter = new GeoUnitConverter();
res = converter.Convert(res, GeoUnits.Meters, map.Display.MapUnits);
}
var origin = orientation == GridOrientation.UpperLeft ? metadata.GetOriginUpperLeft(epsg) : metadata.GetOriginLowerLeft(epsg);
double H = metadata.TileHeight * res;
double y = (orientation == GridOrientation.UpperLeft ?
origin.Y - H * (row + 1) :
origin.Y + H * row);
double W = metadata.TileWidth * res;
//if (map.Display.MapUnits == GeoUnits.DecimalDegrees)
//{
// double phi = (2 * y + H) / 2.0;
// W /= Math.Cos(phi / 180.0 * Math.PI);
//}
double x = origin.X + W * col;
map.Display.ZoomTo(new Envelope(x, y, x + W, y + H));
map.Render();
bool maketrans = map.Display.MakeTransparent;
map.Display.MakeTransparent = true;
map.SaveImage(path, format == ".jpg" ? System.Drawing.Imaging.ImageFormat.Jpeg : System.Drawing.Imaging.ImageFormat.Png);
map.Display.MakeTransparent = maketrans;
context.ServiceRequest.Response = path;
_mapServer.Log("CreateTile:", loggingMethod.request_detail, path);
}
}
private byte[] GetCompactTile(IServiceRequestContext context, TileServiceMetadata metadata, int epsg, double scale, int row, int col, string format, GridOrientation orientation)
{
if (!metadata.EPSGCodes.Contains(epsg))
{
throw new ArgumentException("Wrong epsg argument");
}
if (orientation != GridOrientation.UpperLeft)
{
throw new ArgumentException("Compact Tiles Orientation must bei Upper Left!");
}
scale = metadata.Scales.GetScale(scale);
if (scale <= 0.0)
{
throw new ArgumentException("Wrong scale argument");
}
//IEnvelope bounds = metadata.GetEGPSEnvelope(epsg);
//if (bounds == null || bounds.Width == 0.0 || bounds.Height == 0.0)
// throw new Exception("No bounds defined for EPSG:" + epsg);
IPoint origin = metadata.GetOriginUpperLeft(epsg);
if (origin == null)
{
throw new Exception("No origin defined for EPSG:" + epsg);
}
format = format.ToLower();
if (format != ".png" && format != ".jpg")
{
throw new Exception("Unsupported image format");
}
if (format == ".png" && metadata.FormatPng == false)
{
throw new Exception("Format image/png not supported");
}
if (format == ".jpg" && metadata.FormatJpg == false)
{
throw new Exception("Format image/jpeg no supported");
}
string path = _mapServer.TileCachePath + @"\" + MapName(context) + @"\_alllayers\compact\" +
TileServiceMetadata.ScalePath(orientation, epsg, scale);
string compactTileName = CompactTileName(row, col);
string bundleFilename = path + @"\" + compactTileName + ".tilebundle";
string bundleDoneFilename = path + @"\" + compactTileName + ".tilebundle.done";
string bundleCalcFilename = path + @"\" + compactTileName + ".tilebundle.calc";
if (new FileInfo(bundleFilename).Exists)
{
return(GetCompactTileBytes(context, path, row, col, format));
}
if (IsDirectoryEmpty(path))
{
#region On The Fly
using (IServiceMap map = context.CreateServiceMapInstance())
{
ISpatialReference sRef = SpatialReference.FromID("epsg:" + epsg);
map.Display.SpatialReference = sRef;
map.Display.dpi = metadata.Dpi;
map.Display.iWidth = metadata.TileWidth;
map.Display.iHeight = metadata.TileHeight;
double res = (double)scale / (metadata.Dpi / 0.0254);
if (map.Display.MapUnits != GeoUnits.Meters)
{
GeoUnitConverter converter = new GeoUnitConverter();
res = converter.Convert(res, GeoUnits.Meters, map.Display.MapUnits);
}
origin = orientation == GridOrientation.UpperLeft ? metadata.GetOriginUpperLeft(epsg) : metadata.GetOriginLowerLeft(epsg);
double H = metadata.TileHeight * res;
double y = (orientation == GridOrientation.UpperLeft ?
origin.Y - H * (row + 1) :
origin.Y + H * row);
double W = metadata.TileWidth * res;
double x = origin.X + W * col;
map.Display.ZoomTo(new Envelope(x, y, x + W, y + H));
map.Render();
bool maketrans = map.Display.MakeTransparent;
map.Display.MakeTransparent = true;
MemoryStream ms = new MemoryStream();
map.SaveImage(ms, format == ".jpg" ? System.Drawing.Imaging.ImageFormat.Jpeg : System.Drawing.Imaging.ImageFormat.Png);
map.Display.MakeTransparent = maketrans;
return(ms.ToArray());
}
#endregion
}
return(null);
}
