static void Get_TileBBox(double lat1, double lon1, double lat2, double lon2, int level)
{
int pixelX1, pixelY1, pixelX2, pixelY2;
int tileX1, tileY1, tileX2, tileY2;
TileSystem.LatLongToPixelXY(lat1, lon1, level, out pixelX1, out pixelY1);
TileSystem.LatLongToPixelXY(lat2, lon2, level, out pixelX2, out pixelY2);
TileSystem.PixelXYToTileXY(pixelX1, pixelY1, out tileX1, out tileY1);
TileSystem.PixelXYToTileXY(pixelX2, pixelY2, out tileX2, out tileY2);
TileSystem.TileXYToPixelXY(tileX1, tileY1, out pixelX1, out pixelY1);
TileSystem.TileXYToPixelXY(tileX2 + 1, tileY2 + 1, out pixelX2, out pixelY2);
double olat1, olon1, olat2, olon2;
TileSystem.PixelXYToLatLong(pixelX1, pixelY1, level, out olat1, out olon1);
TileSystem.PixelXYToLatLong(pixelX2, pixelY2, level, out olat2, out olon2);
Console.WriteLine(olon1 + "," + olat1);
Console.WriteLine(olon2 + "," + olat2);
}
static void Gen_meta(string regionname)
{
StreamWriter sw = new StreamWriter(@"F:\data\" + regionname + ".txt");
string path = @"F:\data\" + regionname;
string[] files = Directory.GetFiles(path, "*.jpeg");
int minpixelX = -1, maxpixelX = -1, minpixelY = -1, maxpixelY = -1;
double minlon = -1, maxlon = -1, minlat = -1, maxlat = -1;
int level = 19;
foreach (var file in files)
{
int tileX, tileY;
string quadKey = Path.GetFileNameWithoutExtension(file).Remove(0, 1);
TileSystem.QuadKeyToTileXY(quadKey, out tileX, out tileY, out level);
int pixelX, pixelY;
double lon, lat;
TileSystem.TileXYToPixelXY(tileX, tileY, out pixelX, out pixelY);
TileSystem.PixelXYToLatLong(pixelX, pixelY, level, out lat, out lon);
if (pixelX < minpixelX || minpixelX == -1)
{
minpixelX = pixelX;
}
if (pixelX > maxpixelX || maxpixelX == -1)
{
maxpixelX = pixelX;
}
if (pixelY < minpixelY || minpixelY == -1)
{
minpixelY = pixelY;
}
if (pixelY > maxpixelY || maxpixelY == -1)
{
maxpixelY = pixelY;
}
if (lon < minlon || minlon == -1)
{
minlon = lon;
}
if (lon > maxlon || maxlon == -1)
{
maxlon = lon;
}
if (lat < minlat || minlat == -1)
{
minlat = lat;
}
if (lat > maxlat || maxlat == -1)
{
maxlat = lat;
}
sw.WriteLine(quadKey + "," + tileX + "," + tileY + "," + level + "," + pixelX + "," + pixelY + "," + lat + "," + lon);
}
sw.Close();
sw = new StreamWriter(@"F:\data\" + regionname + "_meta.txt");
sw.WriteLine(minpixelX + "," + minpixelY + "," + maxpixelX + "," + maxpixelY + "," + level);
sw.WriteLine(minlat + "," + maxlat + "," + minlon + "," + maxlon + "," + level);
sw.WriteLine((maxpixelX - minpixelX) + "," + (maxpixelY - minpixelY));
sw.Close();
}