static public string GetTDT(string layer, int level, int row, int col)
{
//过滤平面8-13列的请求
int maxCol = 8 * (int)Math.Pow(2, level);
if (col >= maxCol)
{
return(null);
}
int tdtlevel = level + 3;
string tdtlayer = layer;
//string tdtlayer = GetTDTLayerName(layer, tdtlevel);
if (tdtlayer == null)
{
return(null);
}
//
string FolderPath = ConfigurationManager.AppSettings["CachePath"] +
"\\256\\TDTSource" + "\\" + layer + "\\" + level;
string path = FolderPath + "\\" + row + "_" + col + ".png";
if (File.Exists(path))
{
return(path);
}
//构造绘制块Key
string drawKey =
"/TDTImage/256" +
"/" + layer +
"/" + level +
"/" + row +
"/" + col;
try
{
//
LockKey.Lock(drawKey);
//创建文件夹
if (!Directory.Exists(FolderPath))
{
Directory.CreateDirectory(FolderPath);
}
//天地图第3级行列号
int tdtrownum = 4;
int tdtcolnum = 8;
int tl = level;
while (tl-- > 0)
{
tdtrownum *= 2;
tdtcolnum *= 2;
}
int tdtrow = tdtrownum - row - 1;
int tdtcol = col;
Random r = new Random();
int ser = r.Next(8);
//string url1 = "http://tile" + ser + ".tianditu.com/DataServer?T=" + tdtlayer + "&X=" + tdtcol + "&Y=" + tdtrow + "&L=" + tdtlevel;
string url1 = "";
switch (tdtlayer)
{
case "img_c": url1 = "http://t" + ser + ".tianditu.cn/" + tdtlayer + "/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=img&STYLE=default&TILEMATRIXSET=c&TILEMATRIX=" + tdtlevel + "&TILEROW=" + tdtrow + "&TILECOL=" + tdtcol + "&FORMAT=tiles"; break;
case "vec_c": url1 = "http://t" + ser + ".tianditu.cn/" + tdtlayer + "/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=vec&STYLE=default&TILEMATRIXSET=c&TILEMATRIX=" + tdtlevel + "&TILEROW=" + tdtrow + "&TILECOL=" + tdtcol + "&FORMAT=tiles"; break;
case "cva_c": url1 = "http://t" + ser + ".tianditu.cn/" + tdtlayer + "/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=cva&STYLE=default&TILEMATRIXSET=c&TILEMATRIX=" + tdtlevel + "&TILEROW=" + tdtrow + "&TILECOL=" + tdtcol + "&FORMAT=tiles"; break;
case "X0110_ZL_GJ":
case "X0110_ZL_SJ": url1 = "http://t" + ser + ".tianditu.cn/DataServer?T=bou_c&X=" + tdtcol + "&Y=" + tdtrow + "&L=" + tdtlevel + ""; break;
case "W1103_TMap":
url1 = "http://t" + ser + ".tianditu.cn/DataServer?T=wat_c&X=" + tdtcol + "&Y=" + tdtrow + "&L=" + tdtlevel + ""; break;
}
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url1);
request.Timeout = Timeout;
HttpWebResponse response = null;
using (response = request.GetResponse() as HttpWebResponse)
{
if (response.StatusCode == HttpStatusCode.OK)
{
int len = (int)response.ContentLength;
if (len == 2407)
{
path = null;
//return "empty";
}
else
{
using (Stream responseStream = response.GetResponseStream())
{
BinaryReader reader = new BinaryReader(responseStream);
byte[] byteArry = reader.ReadBytes(len);
FileStream fs = File.Open(path, FileMode.Create);
fs.Write(byteArry, 0, byteArry.Length);
fs.Close();
}
}
}
}
}
catch (Exception)
{
path = null;
}
}
catch (Exception)
{
path = null;
}
finally
{
LockKey.UnLock(drawKey);
}
return(path);
}
static public string GetAltitude(string dwsUrl, string classpath, string filter)
{
string path = null;
try
{
string[] tmp = filter.Split(',');
string level = tmp[2].Split(':')[1];
string row = tmp[0].Split(':')[1];
string col = tmp[1].Split(':')[1];
string sample = tmp[7].Split(':')[1];
string xmax = tmp[3].Split(':')[1];
string xmin = tmp[4].Split(':')[1];
string ymin = tmp[5].Split(':')[1];
string ymax = tmp[6].Split(':')[1];
filter = "row:" + row + ",col:" + col + ",level:" + level + ",xmax:" + xmax + ",xmin:" + xmin + ",ymin:" + ymin + ",ymax:" + ymax + ",sample:" + sample;
string safeclasspath = Uri.EscapeDataString(classpath);
string FolderPath = ConfigurationManager.AppSettings["DEMCachePath"].ToString() +
"/" + sample + "/" + safeclasspath + "/" + level;
path = FolderPath + "/" + row + "_" + col + ".db";
if (File.Exists(path))
{
return(path);
}
//创建文件夹
if (!Directory.Exists(FolderPath))
{
Directory.CreateDirectory(FolderPath);
}
string getKey =
"/DCSDem/" + sample +
"/" + classpath +
"/" + level +
"/" + row +
"/" + col;
LockKey.Lock(getKey);
try
{
byte[] dem = GetTDData(dwsUrl, "altitude", classpath, filter);
if (dem != null)
{
FileStream fs = File.Open(path, FileMode.Create);
fs.Write(dem, 0, dem.Length);
fs.Close();
return(path);
}
else
{
return(null);
}
}
catch (Exception)
{
path = null;
}
finally
{
LockKey.UnLock(getKey);
}
}
catch (Exception)
{
path = null;
}
return(path);
}
//
static public string GetMap(string dwsUrl, string docName, string mapName, int level, int row, int col, int size, string format)
{
string FolderPath = ConfigurationManager.AppSettings["CachePath"].ToString() +
"\\" + size + "\\" + docName + "\\" + mapName + "\\" + level;
string path = FolderPath + "\\" + row + "_" + col + ".png";
//查找缓存
FileInfo f = new FileInfo(path);
if (f.Exists)
{
if (f.Length == 0 || f.Length == 1275)
{
return("empty");
}
return(path);
}
//计算绘制等级，行列号，和范围
int uplevel = UP_LEVLE;
int drawLevel = level - uplevel;
double drawSize = LEVEL0_TILE_SIZE / Math.Pow(2, level);
int drawPixelSize = size;
int drawRow = row;
int drawCol = col;
while (uplevel-- > 0)
{
drawRow /= 2;
drawCol /= 2;
drawSize *= 2;
drawPixelSize *= 2;
}
//构造绘制块Key
string drawKey =
"/DCSMap/" + size +
"/" + docName +
"/" + mapName +
"/" + drawLevel +
"/" + drawRow +
"/" + drawCol;
//
string filepath = null;
//
try
{
LockKey.Lock(drawKey);
//计算范围
double xmin = -180 + (drawCol * drawSize);
double ymin = -90 + (drawRow * drawSize);
double xmax = xmin + drawSize;
double ymax = ymin + drawSize;
//
string box = xmin + "," + ymin + "," + xmax + "," + ymax;
//
DWS.dwService dws = new DWS.dwService();
dws.Url = dwsUrl;
//DWS.MapQuery query = new DWS.MapQuery();
//query.box = box;
//query.format = format;
//query.classPath = "";
//query.mapDoc = docName;
//query.mapName = mapName;
//query.col = -1;
//query.row = -1;
//query.level = 0;
//query.useTile = false;
//query.width = drawPixelSize;
//query.height = drawPixelSize;
DWS.MapQuery query = new DWS.MapQuery();
query.format = "png";
query.classPath = "";
query.mapDoc = docName;
query.mapName = mapName;
query.col = col;
query.row = row;
query.level = (short)level;
query.useTile = true;
query.width = 256;
query.height = 256;
//开始绘制
DWS.MapInfo mi = dws.getMap(query);
//创建文件夹
if (!Directory.Exists(FolderPath))
{
Directory.CreateDirectory(FolderPath);
}
//绘制成功
if (mi.isSuccess && mi.image != null)
{
//开始的行列号
int sRow = drawRow;
int sCol = drawCol;
//瓦块行列数目
int rowNum = 1;
int colNum = 1;
uplevel = UP_LEVLE;
while (uplevel-- > 0)
{
sRow *= 2;
sCol *= 2;
rowNum *= 2;
colNum *= 2;
}
// hack, 850 byte and 6120 byte is empty
if (mi.image.Length == 850 && mi.image.Length == 24072)
{
// 记录缓存
for (int nr = 0; nr < rowNum; ++nr)
{
for (int nc = 0; nc < colNum; ++nc)
{
//string tilepath = FolderPath + "/" + row + "_" + col + ".png";
string tilepath = FolderPath + "/" + (sRow + nr) + "_" + (sCol + nc) + ".png";
FileStream fs = File.Open(tilepath, FileMode.CreateNew);
fs.Close();
}
}
}
else
{
//请求到的图片
MemoryStream stream = new MemoryStream(mi.image);
Bitmap fullimage = new Bitmap(stream);
//
Bitmap bmp = new Bitmap(size, size);
Graphics g = Graphics.FromImage(bmp);
//
Rectangle destRect = new Rectangle(0, 0, size, size);
Rectangle srcRect = new Rectangle(0, 0, size, size);
//分割图片
for (int nr = 0; nr < rowNum; ++nr)
{
for (int nc = 0; nc < colNum; ++nc)
{
g.Clear(System.Drawing.Color.Transparent);
srcRect.X = nc * size;
srcRect.Y = drawPixelSize - (nr * size) - size;
g.DrawImage(fullimage, destRect, srcRect, GraphicsUnit.Pixel);
//
string tilepath = FolderPath + "/" + (sRow + nr) + "_" + (sCol + nc) + ".png";
try
{
File.Delete(tilepath);
bmp.Save(tilepath);
}
catch (Exception)
{
}
}
}
}
filepath = path;
}
else
{
// error
filepath = null;
}
}
catch (Exception)
{
filepath = null;
}
finally
{
LockKey.UnLock(drawKey);
}
return(filepath);
}