1 // radiostack.cxx -- class to manage an instance of the radio stack
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.
24 #include <Aircraft/aircraft.hxx>
25 #include <Navaids/ilslist.hxx>
26 #include <Navaids/navlist.hxx>
28 #include "radiostack.hxx"
31 FGRadioStack *current_radiostack;
35 FGRadioStack::FGRadioStack() {
42 FGRadioStack::~FGRadioStack() {
46 // Search the database for the current frequencies given current location
47 void FGRadioStack::update( double lon, double lat, double elev ) {
50 Point3D aircraft = fgGeodToCart( Point3D( lon, lat, elev ) );
55 station = Point3D( nav1_x, nav1_y, nav1_z );
56 nav1_loc_dist = aircraft.distance3D( station );
59 // staightline distance
60 station = Point3D( nav1_dme_x, nav1_dme_y, nav1_dme_z );
61 nav1_dme_dist = aircraft.distance3D( station );
67 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
68 nav1_gs_dist = aircraft.distance3D( station );
73 if ( nav1_dme_dist < nav1_effective_range * NM_TO_METER ) {
77 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
78 nav1_loclat, nav1_loclon,
82 // cout << " heading = " << nav1_heading
83 // << " dist = " << nav1_dist << endl;
90 nav1_radial = nav1_sel_radial;
94 // cout << "not picking up vor. :-(" << endl;
98 station = Point3D( nav2_x, nav2_y, nav2_z );
99 nav2_loc_dist = aircraft.distance3D( station );
101 if ( nav2_has_dme ) {
102 // staightline distance
103 station = Point3D( nav2_dme_x, nav2_dme_y, nav2_dme_z );
104 nav2_dme_dist = aircraft.distance3D( station );
110 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
111 nav2_gs_dist = aircraft.distance3D( station );
116 if ( nav2_dme_dist < nav2_effective_range * NM_TO_METER ) {
120 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
121 nav2_loclat, nav2_loclon,
125 // cout << " heading = " << nav2_heading
126 // << " dist = " << nav2_dist << endl;
128 nav2_inrange = false;
132 nav2_radial = nav2_sel_radial;
135 nav2_inrange = false;
136 // cout << "not picking up vor. :-(" << endl;
141 // staightline distance
142 station = Point3D( adf_x, adf_y, adf_z );
143 adf_dist = aircraft.distance3D( station );
145 if ( adf_dist < adf_effective_range * NM_TO_METER ) {
149 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
154 // cout << " heading = " << nav2_heading
155 // << " dist = " << nav2_dist << endl;
165 // Update current nav/adf radio stations based on current postition
166 void FGRadioStack::search( double lon, double lat, double elev ) {
171 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
174 nav1_has_dme = ils.get_has_dme();
175 nav1_has_gs = ils.get_has_gs();
177 nav1_loclon = ils.get_loclon();
178 nav1_loclat = ils.get_loclat();
179 nav1_gslon = ils.get_gslon();
180 nav1_gslat = ils.get_gslat();
181 nav1_dmelon = ils.get_dmelon();
182 nav1_dmelat = ils.get_dmelat();
183 nav1_elev = ils.get_gselev();
184 nav1_effective_range = FG_ILS_DEFAULT_RANGE;
185 nav1_target_gs = ils.get_gsangle();
186 nav1_radial = ils.get_locheading();
187 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
188 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
189 nav1_x = ils.get_x();
190 nav1_y = ils.get_y();
191 nav1_z = ils.get_z();
192 nav1_gs_x = ils.get_gs_x();
193 nav1_gs_y = ils.get_gs_y();
194 nav1_gs_z = ils.get_gs_z();
195 nav1_dme_x = ils.get_dme_x();
196 nav1_dme_y = ils.get_dme_y();
197 nav1_dme_z = ils.get_dme_z();
198 // cout << "Found an ils station in range" << endl;
199 // cout << " id = " << ils.get_locident() << endl;
200 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
203 nav1_has_dme = nav.get_has_dme();
205 nav1_loclon = nav.get_lon();
206 nav1_loclat = nav.get_lat();
207 nav1_elev = nav.get_elev();
208 nav1_effective_range = nav.get_range();
209 nav1_target_gs = 0.0;
210 nav1_radial = nav1_sel_radial;
211 nav1_x = nav1_dme_x = nav.get_x();
212 nav1_y = nav1_dme_y = nav.get_y();
213 nav1_z = nav1_dme_y = nav.get_z();
214 // cout << "Found a vor station in range" << endl;
215 // cout << " id = " << nav.get_ident() << endl;
218 // cout << "not picking up vor1. :-(" << endl;
221 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
224 nav2_has_dme = ils.get_has_dme();
225 nav2_has_gs = ils.get_has_gs();
227 nav2_loclon = ils.get_loclon();
228 nav2_loclat = ils.get_loclat();
229 nav2_elev = ils.get_gselev();
230 nav2_effective_range = FG_ILS_DEFAULT_RANGE;
231 nav2_target_gs = ils.get_gsangle();
232 nav2_radial = ils.get_locheading();
233 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
234 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
235 nav2_x = ils.get_x();
236 nav2_y = ils.get_y();
237 nav2_z = ils.get_z();
238 nav2_gs_x = ils.get_gs_x();
239 nav2_gs_y = ils.get_gs_y();
240 nav2_gs_z = ils.get_gs_z();
241 nav2_dme_x = ils.get_dme_x();
242 nav2_dme_y = ils.get_dme_y();
243 nav2_dme_z = ils.get_dme_z();
244 // cout << "Found an ils station in range" << endl;
245 // cout << " id = " << ils.get_locident() << endl;
246 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
249 nav2_has_dme = nav.get_has_dme();
250 nav2_has_dme = false;
251 nav2_loclon = nav.get_lon();
252 nav2_loclat = nav.get_lat();
253 nav2_elev = nav.get_elev();
254 nav2_effective_range = nav.get_range();
255 nav2_target_gs = 0.0;
256 nav2_radial = nav2_sel_radial;
257 nav2_x = nav2_dme_x = nav.get_x();
258 nav2_y = nav2_dme_y = nav.get_y();
259 nav2_z = nav2_dme_z = nav.get_z();
260 // cout << "Found a vor station in range" << endl;
261 // cout << " id = " << nav.get_ident() << endl;
264 // cout << "not picking up vor2. :-(" << endl;
268 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
271 adf_lon = nav.get_lon();
272 adf_lat = nav.get_lat();
273 adf_elev = nav.get_elev();
274 adf_effective_range = nav.get_range();
278 // cout << "Found an adf station in range" << endl;
279 // cout << " id = " << nav.get_ident() << endl;
282 // cout << "not picking up adf. :-(" << endl;
287 // periodic radio station search wrapper
288 void fgRadioSearch( void ) {
289 current_radiostack->search( cur_fdm_state->get_Longitude(),
290 cur_fdm_state->get_Latitude(),
291 cur_fdm_state->get_Altitude() * FEET_TO_METER );