1 // cockpit.cxx -- routines to draw a cockpit (initial draft)
3 // Written by Michele America, started September 1997.
5 // Copyright (C) 1997 Michele F. America - nomimarketing@mail.telepac.pt
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.
33 #include <simgear/xgl/xgl.h>
39 #include <simgear/constants.h>
40 #include <simgear/debug/logstream.hxx>
41 #include <simgear/math/fg_random.h>
42 #include <simgear/math/polar3d.hxx>
44 #include <Aircraft/aircraft.hxx>
45 #include <Include/general.hxx>
46 #include <Main/globals.hxx>
47 #include <Main/options.hxx>
48 #include <Main/views.hxx>
49 #include <Scenery/scenery.hxx>
50 #include <Time/fg_timer.hxx>
53 #include "cockpit.hxx"
56 // This is a structure that contains all data related to
57 // cockpit/panel/hud system
59 static pCockpit ac_cockpit;
60 // The following routines obtain information concerntin the aircraft's
61 // current state and return it to calling instrument display routines.
62 // They should eventually be member functions of the aircraft.
65 float get_latitude( void )
69 lat = current_aircraft.fdm_state->get_Latitude() * RAD_TO_DEG;
76 float get_lat_min( void )
80 a = current_aircraft.fdm_state->get_Latitude() * RAD_TO_DEG;
84 d = (double) ( (int) a);
85 float lat_min = (a - d) * 60.0;
90 float get_longitude( void )
94 lon = current_aircraft.fdm_state->get_Longitude() * RAD_TO_DEG;
102 get_formated_gmt_time( void )
105 const struct tm *p = globals->get_time_params()->getGmt();
106 sprintf( buf, "%d/%d/%4d %d:%02d:%02d",
107 p->tm_mon+1, p->tm_mday, 1900 + p->tm_year,
108 p->tm_hour, p->tm_min, p->tm_sec);
113 float get_long_min( void )
116 a = current_aircraft.fdm_state->get_Longitude() * RAD_TO_DEG;
120 d = (double) ( (int) a);
121 float lon_min = (a - d) * 60.0;
125 float get_throttleval( void )
127 float throttle = controls.get_throttle( 0 );
128 return (throttle); // Hack limiting to one engine
131 float get_aileronval( void )
133 float aileronval = controls.get_aileron();
137 float get_elevatorval( void )
139 float elevator_val = (float)controls.get_elevator();
143 float get_elev_trimval( void )
145 float elevatorval = controls.get_elevator_trim();
146 return (elevatorval);
149 float get_rudderval( void )
151 float rudderval = controls.get_rudder();
155 float get_speed( void )
157 // Make an explicit function call.
158 float speed = current_aircraft.fdm_state->get_V_calibrated_kts()
159 * current_options.get_speed_up();
165 float mach=current_aircraft.fdm_state->get_Mach_number();
169 float get_aoa( void )
171 float aoa = current_aircraft.fdm_state->get_Alpha() * RAD_TO_DEG;
175 float get_roll( void )
177 float roll = current_aircraft.fdm_state->get_Phi();
181 float get_pitch( void )
183 float pitch = current_aircraft.fdm_state->get_Theta();
187 float get_heading( void )
189 float heading = (current_aircraft.fdm_state->get_Psi() * RAD_TO_DEG);
193 float get_altitude( void )
196 // double rough_elev;
198 // current_aircraft.fdm_state
199 // rough_elev = mesh_altitude(f->get_Longitude() * RAD_TO_ARCSEC,
200 // f->get_Latitude() * RAD_TO_ARCSEC);
203 if ( current_options.get_units() == fgOPTIONS::FG_UNITS_FEET ) {
204 altitude = current_aircraft.fdm_state->get_Altitude();
206 altitude = (current_aircraft.fdm_state->get_Altitude() * FEET_TO_METER);
211 float get_agl( void )
215 if ( current_options.get_units() == fgOPTIONS::FG_UNITS_FEET ) {
216 agl = (current_aircraft.fdm_state->get_Altitude()
217 - scenery.cur_elev * METER_TO_FEET);
219 agl = (current_aircraft.fdm_state->get_Altitude() * FEET_TO_METER
225 float get_sideslip( void )
227 float sideslip = current_aircraft.fdm_state->get_Beta();
231 float get_frame_rate( void )
233 float frame_rate = general.get_frame_rate();
237 float get_fov( void )
239 float fov = current_options.get_fov();
243 float get_vfc_ratio( void )
245 // float vfc = current_view.get_vfc_ratio();
250 float get_vfc_tris_drawn ( void )
252 // float rendered = current_view.get_tris_rendered();
253 // return (rendered);
257 float get_vfc_tris_culled ( void )
259 // float culled = current_view.get_tris_culled();
264 float get_climb_rate( void )
267 if ( current_options.get_units() == fgOPTIONS::FG_UNITS_FEET ) {
268 climb_rate = current_aircraft.fdm_state->get_Climb_Rate() * 60.0;
270 climb_rate = current_aircraft.fdm_state->get_Climb_Rate() * FEET_TO_METER * 60.0;
276 float get_view_direction( void )
280 view = FG_2PI - current_view.get_view_offset();
281 view = ( current_aircraft.fdm_state->get_Psi() + view) * RAD_TO_DEG;
293 /****************************************************************************/
294 /* Convert degrees to dd mm'ss.s" (DMS-Format) */
295 /****************************************************************************/
296 char *dmshh_format(double degrees)
307 min_part = 60.0 * (degrees - deg_part);
308 sec_part = 3600.0 * (degrees - deg_part - min_part / 60.0);
310 /* Round off hundredths */
311 if (sec_part + 0.005 >= 60.0)
312 sec_part -= 60.0, min_part += 1;
314 min_part -= 60, deg_part += 1;
316 sprintf(buf,"%02d*%02d %05.2f",deg_part,min_part,sec_part);
323 /************************************************************************
324 Convert degrees to dd mm.mmm' (DMM-Format)
325 Description: Converts using a round-off factor tailored to the required
326 precision of the minutes field (three decimal places). Round-off
327 prevents function from returning a minutes value of 60.
329 Input arguments: Coordinate value in decimal degrees
331 ************************************************************************/
332 static char *toDM(float dd)
343 /* round for minutes expressed to three decimal places */
344 tempdd = fabs(dd) + (5.0E-4 / 60.0);
346 mn = fabs( (tempdd - (double)(deg)) * 60.0 - 4.999E-4 );
348 sprintf(dm, "%d*%06.3f", deg, mn);
353 /************************************************************************
354 Convert degrees to dd mm'ss.s'' (DMS-Format)
355 Description: Converts using a round-off factor tailored to the required
356 precision of the seconds field (one decimal place). Round-off
357 prevents function from returning a seconds value of 60.
359 Input arguments: Coordinate value in decimal degrees
361 ************************************************************************/
362 static char *toDMS(float dd)
365 double tempdd, tempmin;
374 /* round up for seconds expressed to one decimal place */
375 tempdd = fabs(dd) + (0.05 / 3600.0);
377 tempmin = (tempdd - (double)(deg)) * 60.0;
379 sec = fabs( (tempmin - (double)(mn)) * 60.0 - 0.049 );
381 sprintf(dms, "%d*%02d %04.1f", deg, mn, sec);
386 // Have to set the LatLon display type
387 //static char *(*fgLatLonFormat)(float) = toDM;
388 static char *(*fgLatLonFormat)(float);
390 char *coord_format_lat(float latitude)
395 // dmshh_format(latitude),
398 fgLatLonFormat(latitude),
399 latitude > 0 ? 'N' : 'S');
403 char *coord_format_lon(float longitude)
408 // dmshh_format(longitude),
411 fgLatLonFormat(longitude),
412 longitude > 0 ? 'E' : 'W');
416 void fgLatLonFormatToggle( puObject *)
418 static int toggle = 0;
421 fgLatLonFormat = toDM;
423 fgLatLonFormat = toDMS;
429 char *coord_format_latlon(double latitude, double longitude)
431 static char buf[1024];
433 sprintf(buf,"%s%c %s%c",
434 dmshh_format(latitude),
435 latitude > 0 ? 'N' : 'S',
436 dmshh_format(longitude),
437 longitude > 0 ? 'E' : 'W');
443 bool fgCockpitInit( fgAIRCRAFT *cur_aircraft )
445 FG_LOG( FG_COCKPIT, FG_INFO, "Initializing cockpit subsystem" );
447 // cockpit->code = 1; /* It will be aircraft dependent */
448 // cockpit->status = 0;
450 // If aircraft has HUD specified we will get the specs from its def
451 // file. For now we will depend upon hard coding in hud?
453 // We must insure that the existing instrument link is purged.
454 // This is done by deleting the links in the list.
456 // HI_Head is now a null pointer so we can generate a new list from the
459 fgHUDInit( cur_aircraft );
460 ac_cockpit = new fg_Cockpit();
462 // Have to set the LatLon display type
463 fgLatLonFormat = toDM;
465 FG_LOG( FG_COCKPIT, FG_INFO,
466 " Code " << ac_cockpit->code() << " Status "
467 << ac_cockpit->status() );
472 void fgCockpitUpdate( void ) {
474 FG_LOG( FG_COCKPIT, FG_DEBUG,
475 "Cockpit: code " << ac_cockpit->code() << " status "
476 << ac_cockpit->status() );
478 int iwidth = current_view.get_winWidth();
479 int iheight = current_view.get_winHeight();
480 float width = iwidth;
481 float height = iheight;
483 if ( current_options.get_hud_status() ) {
484 // This will check the global hud linked list pointer.
485 // If these is anything to draw it will.
488 #define DISPLAY_COUNTER
489 #ifdef DISPLAY_COUNTER
493 float fps = get_frame_rate();
494 // float tris = fps * get_vfc_tris_drawn();
495 // float culled = fps * get_vfc_tris_culled();
496 // sprintf(buf,"%-4.1f %7.0f %7.0f", fps, tris, culled);
497 sprintf(buf,"%-5.1f", fps);
499 glMatrixMode(GL_PROJECTION);
502 gluOrtho2D(0, width, 0, height);
503 glMatrixMode(GL_MODELVIEW);
507 glDisable(GL_DEPTH_TEST);
508 glDisable(GL_LIGHTING);
510 glColor3f (0.9, 0.4, 0.2);
512 guiFnt.drawString( buf,
513 // width/2 - guiFnt.getStringWidth(buf)/2,
514 int(width - guiFnt.getStringWidth(buf) - 10),
516 glEnable(GL_DEPTH_TEST);
517 glEnable(GL_LIGHTING);
518 glMatrixMode(GL_PROJECTION);
520 glMatrixMode(GL_MODELVIEW);
523 #endif // #ifdef DISPLAY_COUNTER
525 xglViewport( 0, 0, iwidth, iheight );
527 if (current_panel != 0)
528 current_panel->update();