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 // staightline distance
56 station = Point3D( nav1_dme_x, nav1_dme_y, nav1_dme_z );
57 nav1_dme_dist = aircraft.distance3D( station );
59 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
60 nav1_gs_dist = aircraft.distance3D( station );
63 if ( nav1_dme_dist < nav1_effective_range * NM_TO_METER ) {
67 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
68 nav1_loclat, nav1_loclon,
72 // cout << " heading = " << nav1_heading
73 // << " dist = " << nav1_dist << endl;
80 nav1_radial = nav1_sel_radial;
84 // cout << "not picking up vor. :-(" << endl;
88 // staightline distance
89 station = Point3D( nav2_dme_x, nav2_dme_y, nav2_dme_z );
90 nav2_dme_dist = aircraft.distance3D( station );
92 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
93 nav2_gs_dist = aircraft.distance3D( station );
96 if ( nav2_dme_dist < nav2_effective_range * NM_TO_METER ) {
100 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
101 nav2_loclat, nav2_loclon,
105 // cout << " heading = " << nav2_heading
106 // << " dist = " << nav2_dist << endl;
108 nav2_inrange = false;
112 nav2_radial = nav2_sel_radial;
115 nav2_inrange = false;
116 // cout << "not picking up vor. :-(" << endl;
121 // staightline distance
122 station = Point3D( adf_x, adf_y, adf_z );
123 adf_dist = aircraft.distance3D( station );
125 if ( adf_dist < adf_effective_range * NM_TO_METER ) {
129 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
134 // cout << " heading = " << nav2_heading
135 // << " dist = " << nav2_dist << endl;
145 // Update current nav/adf radio stations based on current postition
146 void FGRadioStack::search( double lon, double lat, double elev ) {
151 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
156 nav1_loclon = ils.get_loclon();
157 nav1_loclat = ils.get_loclat();
158 nav1_gslon = ils.get_gslon();
159 nav1_gslat = ils.get_gslat();
160 nav1_dmelon = ils.get_dmelon();
161 nav1_dmelat = ils.get_dmelat();
162 nav1_elev = ils.get_gselev();
163 nav1_effective_range = FG_ILS_DEFAULT_RANGE;
164 nav1_target_gs = ils.get_gsangle();
165 nav1_radial = ils.get_locheading();
166 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
167 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
168 nav1_gs_x = ils.get_gs_x();
169 nav1_gs_y = ils.get_gs_y();
170 nav1_gs_z = ils.get_gs_z();
171 nav1_dme_x = ils.get_dme_x();
172 nav1_dme_y = ils.get_dme_y();
173 nav1_dme_z = ils.get_dme_z();
174 // cout << "Found an ils station in range" << endl;
175 // cout << " id = " << ils.get_locident() << endl;
176 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
179 nav1_dme = nav.get_dme();
180 nav1_loclon = nav.get_lon();
181 nav1_loclat = nav.get_lat();
182 nav1_elev = nav.get_elev();
183 nav1_effective_range = nav.get_range();
184 nav1_target_gs = 0.0;
185 nav1_radial = nav1_sel_radial;
186 nav1_dme_x = nav.get_x();
187 nav1_dme_y = nav.get_y();
188 nav1_dme_y = nav.get_z();
189 // cout << "Found a vor station in range" << endl;
190 // cout << " id = " << nav.get_ident() << endl;
193 // cout << "not picking up vor1. :-(" << endl;
196 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
201 nav2_loclon = ils.get_loclon();
202 nav2_loclat = ils.get_loclat();
203 nav2_elev = ils.get_gselev();
204 nav2_effective_range = FG_ILS_DEFAULT_RANGE;
205 nav2_target_gs = ils.get_gsangle();
206 nav2_radial = ils.get_locheading();
207 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
208 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
209 nav2_gs_x = ils.get_gs_x();
210 nav2_gs_y = ils.get_gs_y();
211 nav2_gs_z = ils.get_gs_z();
212 nav2_dme_x = ils.get_dme_x();
213 nav2_dme_y = ils.get_dme_y();
214 nav2_dme_z = ils.get_dme_z();
215 // cout << "Found an ils station in range" << endl;
216 // cout << " id = " << ils.get_locident() << endl;
217 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
220 nav2_dme = nav.get_dme();
222 nav2_loclon = nav.get_lon();
223 nav2_loclat = nav.get_lat();
224 nav2_elev = nav.get_elev();
225 nav2_effective_range = nav.get_range();
226 nav2_target_gs = 0.0;
227 nav2_radial = nav2_sel_radial;
228 nav2_dme_x = nav.get_x();
229 nav2_dme_y = nav.get_y();
230 nav2_dme_z = nav.get_z();
231 // cout << "Found a vor station in range" << endl;
232 // cout << " id = " << nav.get_ident() << endl;
235 // cout << "not picking up vor2. :-(" << endl;
239 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
242 adf_lon = nav.get_lon();
243 adf_lat = nav.get_lat();
244 adf_elev = nav.get_elev();
245 adf_effective_range = nav.get_range();
249 // cout << "Found an adf station in range" << endl;
250 // cout << " id = " << nav.get_ident() << endl;
253 // cout << "not picking up adf. :-(" << endl;
258 // periodic radio station search wrapper
259 void fgRadioSearch( void ) {
260 current_radiostack->search( cur_fdm_state->get_Longitude(),
261 cur_fdm_state->get_Latitude(),
262 cur_fdm_state->get_Altitude() * FEET_TO_METER );