public JSONArraySRTM1(SRTM1Dictionary SRTM1)
{
version = SRTM1.Version;
full_count = SRTM1.Tiles.Count;
tiles = new List <List <string> >();
for (int i = 0; i < full_count; i++)
{
List <string> l = new List <string>();
SRTM1TileDesignator tile = SRTM1.Tiles.Values.ElementAt(i);
l.Add(tile.FileIndex);
l.Add(tile.FileName);
l.Add(tile.MinLat.ToString("F8", CultureInfo.InvariantCulture));
l.Add(tile.MaxLat.ToString("F8", CultureInfo.InvariantCulture));
l.Add(tile.MinLon.ToString("F8", CultureInfo.InvariantCulture));
l.Add(tile.MaxLon.ToString("F8", CultureInfo.InvariantCulture));
l.Add(tile.MinElv.ToString());
l.Add(tile.MaxElv.ToString());
l.Add(tile.Rows.ToString());
l.Add(tile.Columns.ToString());
l.Add(tile.URL.ToString());
l.Add(tile.Status.ToString());
l.Add(tile.Local.ToString());
l.Add(tile.LastUpdated.ToString("u"));
tiles.Add(l);
}
}
public void DownloadTile(SRTM1TileDesignator tile)
{
if (tile == null)
{
return;
}
if (String.IsNullOrEmpty(tile.URL))
{
return;
}
AutoDecompressionWebClient cl = new AutoDecompressionWebClient();
string filename = Path.GetFileName(tile.URL.Substring(tile.URL.LastIndexOf('/')));
cl.DownloadFile(tile.URL, Path.Combine(Properties.Settings.Default.SRTM1_DataPath, filename));
}
public SRTM1TileDesignator GetTileFromPoint(double lat, double lon)
{
// get the lat/lon base values for a single tile to load
int latbase = (int)Math.Floor(lat);
int lonbase = (int)Math.Floor(lon);
// calculate index
string index = String.Concat((lat > 0) ? "N" : "S", Math.Abs(latbase).ToString("00")) +
String.Concat((lon > 0) ? "E" : "W", Math.Abs(lonbase).ToString("000"));
SRTM1TileDesignator tile = null;
if (Tiles.TryGetValue(index, out tile))
{
if (tile.Local)
{
return(tile);
}
}
return(null);
}
public void FromTable(DataTable dt)
{
if (dt == null)
{
return;
}
this.Clear();
foreach (DataRow row in dt.Rows)
{
string index = row["FileIndex"].ToString();
string filename = row["FileName"].ToString();
double minlat = System.Convert.ToDouble(row["MinLat"]);
double maxlat = System.Convert.ToDouble(row["MaxLat"]);
double minlon = System.Convert.ToDouble(row["MinLon"]);
double maxlon = System.Convert.ToDouble(row["MaxLon"]);
int minelv = System.Convert.ToInt32(row["MinElv"]);
int maxelv = System.Convert.ToInt32(row["MaxElv"]);
int rows = System.Convert.ToInt32(row["Rows"]);
int columns = System.Convert.ToInt32(row["Columns"]);
int version = System.Convert.ToInt32(row["Version"]);
string url = row["URL"].ToString();
SRTM1TILESTATUS status = (SRTM1TILESTATUS)Enum.Parse(typeof(SRTM1TILESTATUS), row["Status"].ToString());
bool local = System.Convert.ToBoolean(row["Local"]);
DateTime lastupdated = DateTime.UtcNow;
try
{
try
{
lastupdated = DateTime.ParseExact(row["LastUpdated"].ToString(), "yyyy-MM-dd HH:mm:ssZ", CultureInfo.InvariantCulture);
lastupdated = lastupdated.ToUniversalTime();
}
catch
{
}
SRTM1TileDesignator tile = new SRTM1TileDesignator(index, filename, minlat, maxlat, minlon, maxlon, minelv, maxelv, rows, columns, version, url, status, local, lastupdated);
this.Tiles.Add(tile.FileIndex, tile);
}
catch
{
}
}
}
private void CalcMinMaxElevation(ref SRTM1TileDesignator tile)
{
try
{
// open file to get more information
if (tile.Local && ((tile.MinElv == int.MaxValue) || (tile.MaxElv == int.MinValue)))
{
using (BinaryReader br = new BinaryReader(File.OpenRead(tile.FileName)))
{
tile.MinElv = int.MaxValue;
tile.MaxElv = int.MinValue;
long l = br.BaseStream.Length / 2;
for (int i = 0; i < l; i++)
{
byte[] a16 = new byte[2];
br.Read(a16, 0, 2);
Array.Reverse(a16);
short s = BitConverter.ToInt16(a16, 0);
if (s < elv_missing_flag)
{
s = (short)elv_missing_flag;
}
if (s != elv_missing_flag)
{
if (s < tile.MinElv)
{
tile.MinElv = s;
}
if (s > tile.MaxElv)
{
tile.MaxElv = s;
}
}
}
Application.DoEvents();
}
}
}
catch (Exception ex)
{
}
}
private void GetAllTilesFromLocalDir()
{
// return empty dictionary if path not found
if (!Directory.Exists(global::ScoutBase.Data.Properties.Settings.Default.SRTM1_DataPath))
{
return;
}
LocalTiles.Clear();
FileInfo[] SRTM1files = new DirectoryInfo(global::ScoutBase.Data.Properties.Settings.Default.SRTM1_DataPath).GetFiles("???????.hgt");
foreach (FileInfo file in SRTM1files)
{
try
{
SRTM1TileDesignator tile = GetTileInfoFromFile(file.FullName);
if (tile != null)
{
// valid tile found, complete tile information
// check min/max info
if ((tile.MaxElv == int.MinValue) || (tile.MinElv == int.MaxValue))
{
// try to get cached min/max info
SRTM1TileDesignator oldtile;
if (Tiles.TryGetValue(tile.FileIndex, out oldtile))
{
tile.MinElv = oldtile.MinElv;
tile.MaxElv = oldtile.MaxElv;
}
// still no min/max info?
if ((tile.MaxElv == int.MinValue) || (tile.MinElv == int.MaxValue))
{
// calculate min/max elevation
CalcMinMaxElevation(ref tile);
}
}
LocalTiles.Add(tile.FileIndex, tile);
}
}
catch
{
}
}
}
public DataRow NewRow(SRTM1TileDesignator tile)
{
DataRow row = this.NewRow();
row["FileIndex"] = tile.FileIndex;
row["Filename"] = tile.FileName;
row["MinLat"] = tile.MinLat;
row["MaxLat"] = tile.MaxLat;
row["MinLon"] = tile.MinLon;
row["MaxLon"] = tile.MaxLon;
row["MinElv"] = tile.MinElv;
row["MaxElv"] = tile.MaxElv;
row["Rows"] = tile.Rows;
row["Columns"] = tile.Columns;
row["Version"] = tile.Version;
row["URL"] = tile.URL;
row["Status"] = tile.Status.ToString();
row["Local"] = tile.Local;
row["LastUpdated"] = tile.LastUpdated.ToString("u");
return(row);
}
public void Update(SRTM1TileDesignator tile)
{
// return on null
if (tile == null)
{
return;
}
SRTM1TileDesignator entry = null;
lock (this)
{
if (Tiles.TryGetValue(tile.FileIndex, out entry))
{
entry.FileIndex = tile.FileIndex;
entry.FileName = tile.FileName;
entry.MinLat = tile.MinLat;
entry.MaxLat = tile.MaxLat;
entry.MinLon = tile.MinLon;
entry.MaxLon = tile.MaxLon;
entry.MinElv = tile.MinElv;
entry.MaxElv = tile.MaxElv;
entry.Rows = tile.Rows;
entry.Columns = tile.Columns;
entry.Version = tile.Version;
entry.URL = tile.URL;
entry.Status = tile.Status;
entry.Local = tile.Local;
entry.LastUpdated = tile.LastUpdated;
changed = true;
}
else
{
this.Tiles.Add(tile.FileIndex, new SRTM1TileDesignator(tile.FileIndex, tile.FileName, tile.MinLat, tile.MaxLat, tile.MinLon, tile.MaxLon, tile.MinElv, tile.MaxElv, tile.Rows, tile.Columns, tile.Version, tile.URL, tile.Status, tile.Local, tile.LastUpdated));
changed = true;
}
}
}
private void GetAllTilesFromWeb()
{
// check for valid urls
if (string.IsNullOrEmpty(global::ScoutBase.Data.Properties.Settings.Default.SRTM1_URLs))
{
return;
}
// load tiles from web only once
if (WebTiles.Count > 0)
{
return;
}
try
{
// split urls if necessary
string[] SRTM1urls;
if (global::ScoutBase.Data.Properties.Settings.Default.SRTM1_URLs.Contains("\r\n"))
{
SRTM1urls = global::ScoutBase.Data.Properties.Settings.Default.SRTM1_URLs.Split(new string[] { "\r\n" }, StringSplitOptions.None);
}
else
{
SRTM1urls = new string[1];
SRTM1urls[0] = global::ScoutBase.Data.Properties.Settings.Default.SRTM1_URLs;
}
// create a searchable index of all available tiles from web
SortedDictionary <string, string> urls = new SortedDictionary <string, string>();
foreach (string url in SRTM1urls)
{
HTTPDirectorySearcher s = new HTTPDirectorySearcher();
List <HTTPDirectoryItem> l = s.GetDirectoryInformation(url);
foreach (HTTPDirectoryItem item in l)
{
try
{
// find possible file names
if (item.Name.Contains(".zip"))
{
urls.Add(item.Name.Split('.')[0].ToUpper(), item.AbsolutePath);
}
}
catch
{
}
}
}
// initally generate tile info
for (int lat = -90; lat < 90; lat++)
{
for (int lon = -180; lon < 180; lon++)
{
string index = ((lat < 0) ? "S" + Math.Abs(lat).ToString("00") : "N" + Math.Abs(lat).ToString("00"))
+ ((lon < 0) ? "W" + Math.Abs(lon).ToString("000") : "E" + Math.Abs(lon).ToString("000"));
SRTM1TileDesignator tile = new SRTM1TileDesignator(index, "", (double)lat, (double)lat + 1, (double)lon, (double)lon + 1, int.MaxValue, int.MinValue, 1201, 1201, 0, "", SRTM1TILESTATUS.UNDEFINED, false);
// search tile in web tile index
string url;
if (urls.TryGetValue(tile.FileIndex, out url))
{
// add tile if found
tile.URL = url;
WebTiles.Add(tile.FileIndex, tile);
}
}
}
}
catch (Exception ex)
{
}
}