1 // fixlist.cxx -- fix list management class
3 // Written by Curtis Olson, started April 2000.
5 // Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <simgear/debug/logstream.hxx>
29 #include <simgear/misc/sgstream.hxx>
30 #include <simgear/math/sg_geodesy.hxx>
32 #include "fixlist.hxx"
35 FGFixList *current_fixlist;
39 FGFixList::FGFixList( void ) {
44 FGFixList::~FGFixList( void ) {
48 // load the navaids and build the map
49 bool FGFixList::init( SGPath path ) {
52 fixlist.erase( fixlist.begin(), fixlist.end() );
54 sg_gzifstream in( path.str() );
55 if ( !in.is_open() ) {
56 SG_LOG( SG_GENERAL, SG_ALERT, "Cannot open file: " << path.str() );
60 // read in each line of the file
68 while ( in.get(c) && c != '\0' && fix.get_ident() != (string)"[End]" ) {
71 if ( fix.get_ident() != (string)"[End]" ) {
72 fixlist[fix.get_ident()] = fix;
79 while ( ! in.eof() && fix.get_ident() != (string)"[End]" ) {
81 /* cout << "id = " << n.get_ident() << endl;
82 cout << " type = " << n.get_type() << endl;
83 cout << " lon = " << n.get_lon() << endl;
84 cout << " lat = " << n.get_lat() << endl;
85 cout << " elev = " << n.get_elev() << endl;
86 cout << " freq = " << n.get_freq() << endl;
87 cout << " range = " << n.get_range() << endl; */
88 if ( fix.get_ident() != (string)"[End]" ) {
89 fixlist[fix.get_ident()] = fix;
100 // query the database for the specified frequency, lon and lat are in
101 // degrees, elev is in meters
102 bool FGFixList::query( const string& ident, double lon, double lat, double elev,
103 FGFix *fix, double *heading, double *dist )
105 *fix = fixlist[ident];
106 if ( fix->get_ident() == "" ) {
111 geo_inverse_wgs_84( elev, lat, lon,
112 fix->get_lat(), fix->get_lon(),
114 // cout << " dist = " << s << endl;