private void WriteFile(StreamWriter sw, navTable subTable)
{
int i = 1; // have to count to avoid the last comma ??!!
foreach (var rec in subTable)
{
sw.WriteLine(rec.Value.AsGeoJson( ) + ((i++ < subTable.Count) ? "," : "")); // adds commas but not for the last one
}
}
/// <summary>
/// Adds a table to this table (omitting key dupes)
/// </summary>
/// <param name="subtable">A table to add to this table</param>
public string AddSubtable(navTable subtable)
{
string ret = "";
foreach (var rec in subtable)
{
try {
ret += this.Add(rec.Value);
}
catch { }
}
return(ret);
}
/// <summary>
/// Returns a subtable with items that match the given criteria
/// </summary>
/// <param name="rangeLimitNm">Range Limit in nm</param>
/// <param name="Lat">Center Lat (decimal)</param>
/// <param name="Lon">Center Lon (decimal)</param>
/// <param name="navTypes">Type of nav items to include</param>
/// <returns>A table with selected records</returns>
public navTable GetSubtable(double rangeLimitNm, double Lat, double Lon, NavTypes[] navTypes = null)
{
if (navTypes == null)
{
navTypes = new NavTypes[] { NavTypes.All }
}
;
var nT = new navTable( );
var myLoc = new LatLon(Lat, Lon);
foreach (var rec in this)
{
var dist = myLoc.DistanceTo(new LatLon(double.Parse(rec.Value.lat), double.Parse(rec.Value.lon)), ConvConsts.EarthRadiusNm);
if ((dist <= rangeLimitNm) && (rec.Value.IsTypeOf(navTypes)))
{
nT.Add(rec.Value);
}
}
return(nT);
}
}
/// <summary>
/// cTor: init the database
/// </summary>
public navDatabase()
{
m_db = new navTable( );
}
/// <summary>
/// Create an ICAO table from the given table
/// </summary>
/// <param name="prefix">The prefix of the table</param>
/// <param name="table">The source to fill from</param>
public navTable(navTable table)
{
this.AddSubtable(table);
}
