1 // navrecord.hxx -- generic vor/dme/ndb class
3 // Written by Curtis Olson, started May 2004.
5 // Copyright (C) 2004 Curtis L. Olson - http://www.flightgear.org/~curt
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.
24 #ifndef _FG_NAVRECORD_HXX
25 #define _FG_NAVRECORD_HXX
29 #include <simgear/compiler.h>
30 #include <simgear/math/sg_geodesy.hxx>
31 #include <simgear/misc/sgstream.hxx>
32 #include <simgear/magvar/magvar.hxx>
33 #include <simgear/timing/sg_time.hxx>
35 #ifdef SG_HAVE_STD_INCLUDES
37 #elif defined( __BORLANDC__ ) || (__APPLE__)
43 SG_USING_STD(istream);
46 #define FG_NAV_DEFAULT_RANGE 50 // nm
47 #define FG_LOC_DEFAULT_RANGE 18 // nm
48 #define FG_DME_DEFAULT_RANGE 50 // nm
49 #define FG_NAV_MAX_RANGE 300 // nm
55 double lon, lat; // location in geodetic coords
57 double x, y, z; // location in cartesian coords (earth centered)
60 double multiuse; // can be slaved variation of VOR
61 // (degrees) or localizer heading
62 // (degrees) or dme bias (nm)
64 string ident; // navaid ident
65 string name; // verbose name in nav database
66 string apt_id; // corresponding airport id
69 bool serviceable; // for failure modeling
70 string trans_ident; // for failure modeling
74 inline FGNavRecord(void);
75 inline ~FGNavRecord(void) {}
77 inline int get_type() const { return type; }
78 inline double get_lon() const { return lon; }
79 inline void set_lon( double l ) { lon = l; }
80 inline double get_lat() const { return lat; }
81 inline void set_lat( double l ) { lat = l; }
82 inline double get_elev_ft() const { return elev_ft; }
83 inline void set_elev_ft( double e ) { elev_ft = e; }
84 inline double get_x() const { return x; }
85 inline double get_y() const { return y; }
86 inline double get_z() const { return z; }
87 inline int get_freq() const { return freq; }
88 inline int get_range() const { return range; }
89 inline double get_multiuse() const { return multiuse; }
90 inline void set_multiuse( double m ) { multiuse = m; }
91 inline const char *get_ident() { return ident.c_str(); }
92 inline string get_name() { return name; }
93 inline string get_apt_id() { return apt_id; }
94 inline bool get_serviceable() { return serviceable; }
95 inline const char *get_trans_ident() { return trans_ident.c_str(); }
97 friend istream& operator>> ( istream&, FGNavRecord& );
102 FGNavRecord::FGNavRecord(void) :
106 x(0.0), y(0.0), z(0.0),
120 operator >> ( istream& in, FGNavRecord& n )
124 if ( n.type == 99 ) {
125 return in >> skipeol;
128 in >> n.lat >> n.lon >> n.elev_ft >> n.freq >> n.multiuse
130 getline( in, n.name );
132 // silently multiply adf frequencies by 100 so that adf
133 // vs. nav/loc frequency lookups can use the same code.
138 // Remove any leading spaces before the name
139 while ( n.name.substr(0,1) == " " ) {
140 n.name = n.name.erase(0,1);
143 if ( n.type >= 4 && n.type <= 9 ) {
144 // these types are always associated with an airport id
145 string::size_type pos = n.name.find(" ");
146 n.apt_id = n.name.substr(0, pos);
149 // assign default ranges
150 if ( n.type == 2 || n.type == 3 ) {
151 n.range = FG_NAV_DEFAULT_RANGE;
152 } else if ( n.type == 4 || n.type == 5 || n.type == 6 ) {
153 n.range = FG_LOC_DEFAULT_RANGE;
154 } else if ( n.type == 12 ) {
155 n.range = FG_DME_DEFAULT_RANGE;
157 n.range = FG_LOC_DEFAULT_RANGE;
160 // transmitted ident (same as ident unless modeling a fault)
161 n.trans_ident = n.ident;
163 // generate cartesian coordinates
164 Point3D geod( n.lon * SGD_DEGREES_TO_RADIANS,
165 n.lat * SGD_DEGREES_TO_RADIANS,
166 n.elev_ft * SG_FEET_TO_METER );
167 Point3D cart = sgGeodToCart( geod );
176 #endif // _FG_NAVRECORD_HXX