1 // environment-mgr.cxx -- manager for natural environment information.
3 // Written by David Megginson, started February 2002.
5 // Copyright (C) 2002 David Megginson - david@megginson.com
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.
23 #include <simgear/debug/logstream.hxx>
24 #include <simgear/scene/sky/sky.hxx>
26 #include <Main/main.hxx>
27 #include <Main/fg_props.hxx>
28 #include <Aircraft/aircraft.hxx>
30 #include "environment.hxx"
31 #include "environment_ctrl.hxx"
32 #include "environment_mgr.hxx"
35 FGEnvironmentMgr::FGEnvironmentMgr ()
36 : _environment(new FGEnvironment),
37 _controller(new FGInterpolateEnvironmentCtrl)
39 _controller->setEnvironment(_environment);
40 set_subsystem("controller", _controller, 0.5);
43 FGEnvironmentMgr::~FGEnvironmentMgr ()
50 FGEnvironmentMgr::init ()
52 SG_LOG( SG_GENERAL, SG_INFO, "Initializing environment subsystem");
53 SGSubsystemGroup::init();
58 FGEnvironmentMgr::reinit ()
60 SG_LOG( SG_GENERAL, SG_INFO, "Reinitializing environment subsystem");
61 SGSubsystemGroup::reinit();
66 FGEnvironmentMgr::bind ()
68 fgTie("/environment/visibility-m", _environment,
69 &FGEnvironment::get_visibility_m, &FGEnvironment::set_visibility_m);
70 fgSetArchivable("/environment/visibility-m");
71 fgTie("/environment/temperature-sea-level-degc", _environment,
72 &FGEnvironment::get_temperature_sea_level_degc,
73 &FGEnvironment::set_temperature_sea_level_degc);
74 fgSetArchivable("/environment/temperature-sea-level-degc");
75 fgTie("/environment/temperature-degc", _environment,
76 &FGEnvironment::get_temperature_degc); // FIXME: read-only for now
77 fgTie("/environment/dewpoint-sea-level-degc", _environment,
78 &FGEnvironment::get_dewpoint_sea_level_degc,
79 &FGEnvironment::set_dewpoint_sea_level_degc);
80 fgSetArchivable("/environment/dewpoint-sea-level-degc");
81 fgTie("/environment/dewpoint-degc", _environment,
82 &FGEnvironment::get_dewpoint_degc); // FIXME: read-only for now
83 fgTie("/environment/pressure-sea-level-inhg", _environment,
84 &FGEnvironment::get_pressure_sea_level_inhg,
85 &FGEnvironment::set_pressure_sea_level_inhg);
86 fgSetArchivable("/environment/pressure-sea-level-inhg");
87 fgTie("/environment/pressure-inhg", _environment,
88 &FGEnvironment::get_pressure_inhg); // FIXME: read-only for now
89 fgTie("/environment/density-slugft3", _environment,
90 &FGEnvironment::get_density_slugft3); // read-only
91 fgTie("/environment/wind-from-heading-deg", _environment,
92 &FGEnvironment::get_wind_from_heading_deg,
93 &FGEnvironment::set_wind_from_heading_deg);
94 fgTie("/environment/wind-speed-kt", _environment,
95 &FGEnvironment::get_wind_speed_kt, &FGEnvironment::set_wind_speed_kt);
96 fgTie("/environment/wind-from-north-fps", _environment,
97 &FGEnvironment::get_wind_from_north_fps,
98 &FGEnvironment::set_wind_from_north_fps);
99 fgSetArchivable("/environment/wind-from-north-fps");
100 fgTie("/environment/wind-from-east-fps", _environment,
101 &FGEnvironment::get_wind_from_east_fps,
102 &FGEnvironment::set_wind_from_east_fps);
103 fgSetArchivable("/environment/wind-from-east-fps");
104 fgTie("/environment/wind-from-down-fps", _environment,
105 &FGEnvironment::get_wind_from_down_fps,
106 &FGEnvironment::set_wind_from_down_fps);
107 fgSetArchivable("/environment/wind-from-down-fps");
108 fgTie("/environment/turbulence/magnitude-norm", _environment,
109 &FGEnvironment::get_turbulence_magnitude_norm,
110 &FGEnvironment::set_turbulence_magnitude_norm);
111 fgSetArchivable("/environment/turbulence/magnitude-norm");
112 fgTie("/environment/turbulence/rate-hz", _environment,
113 &FGEnvironment::get_turbulence_rate_hz,
114 &FGEnvironment::set_turbulence_rate_hz);
115 fgSetArchivable("/environment/turbulence/rate-hz");
117 for (int i = 0; i < MAX_CLOUD_LAYERS; i++) {
119 sprintf(buf, "/environment/clouds/layer[%d]/span-m", i);
121 &FGEnvironmentMgr::get_cloud_layer_span_m,
122 &FGEnvironmentMgr::set_cloud_layer_span_m);
123 fgSetArchivable(buf);
124 sprintf(buf, "/environment/clouds/layer[%d]/elevation-ft", i);
126 &FGEnvironmentMgr::get_cloud_layer_elevation_ft,
127 &FGEnvironmentMgr::set_cloud_layer_elevation_ft);
128 fgSetArchivable(buf);
129 sprintf(buf, "/environment/clouds/layer[%d]/thickness-ft", i);
131 &FGEnvironmentMgr::get_cloud_layer_thickness_ft,
132 &FGEnvironmentMgr::set_cloud_layer_thickness_ft);
133 fgSetArchivable(buf);
134 sprintf(buf, "/environment/clouds/layer[%d]/transition-ft", i);
136 &FGEnvironmentMgr::get_cloud_layer_transition_ft,
137 &FGEnvironmentMgr::set_cloud_layer_transition_ft);
138 fgSetArchivable(buf);
139 sprintf(buf, "/environment/clouds/layer[%d]/coverage", i);
141 &FGEnvironmentMgr::get_cloud_layer_coverage,
142 &FGEnvironmentMgr::set_cloud_layer_coverage);
143 fgSetArchivable(buf);
148 FGEnvironmentMgr::unbind ()
150 fgUntie("/environment/visibility-m");
151 fgUntie("/environment/temperature-sea-level-degc");
152 fgUntie("/environment/temperature-degc");
153 fgUntie("/environment/dewpoint-sea-level-degc");
154 fgUntie("/environment/dewpoint-degc");
155 fgUntie("/environment/pressure-sea-level-inhg");
156 fgUntie("/environment/pressure-inhg");
157 fgUntie("/environment/density-inhg");
158 fgUntie("/environment/wind-from-north-fps");
159 fgUntie("/environment/wind-from-east-fps");
160 fgUntie("/environment/wind-from-down-fps");
161 for (int i = 0; i < MAX_CLOUD_LAYERS; i++) {
163 sprintf(buf, "/environment/clouds/layer[%d]/span-m", i);
165 sprintf(buf, "/environment/clouds/layer[%d]/elevation-ft", i);
167 sprintf(buf, "/environment/clouds/layer[%d]/thickness-ft", i);
169 sprintf(buf, "/environment/clouds/layer[%d]/transition-ft", i);
171 sprintf(buf, "/environment/clouds/layer[%d]/type", i);
177 FGEnvironmentMgr::update (double dt)
179 SGSubsystemGroup::update(dt);
181 // FIXME: the FDMs should update themselves
182 current_aircraft.fdm_state
183 ->set_Velocities_Local_Airmass(_environment->get_wind_from_north_fps(),
184 _environment->get_wind_from_east_fps(),
185 _environment->get_wind_from_down_fps());
186 _environment->set_elevation_ft(fgGetDouble("/position/altitude-ft"));
192 FGEnvironmentMgr::getEnvironment () const
194 return *_environment;
198 FGEnvironmentMgr::getEnvironment (double lat, double lon, double alt) const
200 // Always returns the same environment
201 // for now; we'll make it interesting
203 FGEnvironment env = *_environment;
204 env.set_elevation_ft(alt);
209 FGEnvironmentMgr::_update_fdm () const
212 // Pass atmosphere on to FDM
213 // FIXME: have FDMs read properties directly.
215 if (fgGetBool("/environment/params/control-fdm-atmosphere")) {
216 // convert from Rankine to Celsius
218 ->set_Static_temperature((9.0/5.0)
219 * (_environment->get_temperature_degc() + 273.15));
220 // convert from inHG to PSF
222 ->set_Static_pressure(_environment->get_pressure_inhg() * 70.726566);
223 // keep in slugs/ft^3
225 ->set_Density(_environment->get_density_slugft3());
230 FGEnvironmentMgr::get_cloud_layer_span_m (int index) const
232 return thesky->get_cloud_layer(index)->getSpan_m();
236 FGEnvironmentMgr::set_cloud_layer_span_m (int index, double span_m)
238 thesky->get_cloud_layer(index)->setSpan_m(span_m);
242 FGEnvironmentMgr::get_cloud_layer_elevation_ft (int index) const
244 return thesky->get_cloud_layer(index)->getElevation_m() * SG_METER_TO_FEET;
248 FGEnvironmentMgr::set_cloud_layer_elevation_ft (int index, double elevation_ft)
250 FGEnvironment env = *_environment;
251 env.set_elevation_ft(elevation_ft);
253 thesky->get_cloud_layer(index)
254 ->setElevation_m(elevation_ft * SG_FEET_TO_METER);
256 thesky->get_cloud_layer(index)
257 ->setSpeed(env.get_wind_speed_kt() * 0.5151); // 1 kt = 0.5151 m/s
259 thesky->get_cloud_layer(index)
260 ->setDirection(env.get_wind_from_heading_deg());
264 FGEnvironmentMgr::get_cloud_layer_thickness_ft (int index) const
266 return thesky->get_cloud_layer(index)->getThickness_m() * SG_METER_TO_FEET;
270 FGEnvironmentMgr::set_cloud_layer_thickness_ft (int index, double thickness_ft)
272 thesky->get_cloud_layer(index)
273 ->setThickness_m(thickness_ft * SG_FEET_TO_METER);
277 FGEnvironmentMgr::get_cloud_layer_transition_ft (int index) const
279 return thesky->get_cloud_layer(index)->getTransition_m() * SG_METER_TO_FEET;
283 FGEnvironmentMgr::set_cloud_layer_transition_ft (int index,
284 double transition_ft)
286 thesky->get_cloud_layer(index)
287 ->setTransition_m(transition_ft * SG_FEET_TO_METER);
291 FGEnvironmentMgr::get_cloud_layer_coverage (int index) const
293 switch (thesky->get_cloud_layer(index)->getCoverage()) {
294 case SGCloudLayer::SG_CLOUD_OVERCAST:
296 case SGCloudLayer::SG_CLOUD_BROKEN:
298 case SGCloudLayer::SG_CLOUD_SCATTERED:
300 case SGCloudLayer::SG_CLOUD_FEW:
302 case SGCloudLayer::SG_CLOUD_CIRRUS:
304 case SGCloudLayer::SG_CLOUD_CLEAR:
312 FGEnvironmentMgr::set_cloud_layer_coverage (int index,
313 const char * coverage_name)
315 SGCloudLayer::Coverage coverage;
316 if (!strcmp(coverage_name, "overcast"))
317 coverage = SGCloudLayer::SG_CLOUD_OVERCAST;
318 else if (!strcmp(coverage_name, "broken"))
319 coverage = SGCloudLayer::SG_CLOUD_BROKEN;
320 else if (!strcmp(coverage_name, "scattered"))
321 coverage = SGCloudLayer::SG_CLOUD_SCATTERED;
322 else if (!strcmp(coverage_name, "few"))
323 coverage = SGCloudLayer::SG_CLOUD_FEW;
324 else if (!strcmp(coverage_name, "cirrus"))
325 coverage = SGCloudLayer::SG_CLOUD_CIRRUS;
326 else if (!strcmp(coverage_name, "clear"))
327 coverage = SGCloudLayer::SG_CLOUD_CLEAR;
329 SG_LOG(SG_INPUT, SG_WARN, "Unknown cloud type " << coverage_name);
330 coverage = SGCloudLayer::SG_CLOUD_CLEAR;
332 thesky->get_cloud_layer(index)->setCoverage(coverage);
337 // end of environment-mgr.cxx