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 <FDM/ADA.hxx>
47 #include <Main/globals.hxx>
48 #include <Main/options.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 * globals->get_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 ( globals->get_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 ( globals->get_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 = globals->get_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 ( globals->get_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 )
278 double view_off = FG_2PI - globals->get_current_view()->get_view_offset();
279 double view = ( current_aircraft.fdm_state->get_Psi() + view_off)
290 // $$$ begin - added, VS Renganathan 13 Oct 2K
292 float get_Vx ( void )
294 float Vxx = current_aircraft.fdm_state->get_V_north_rel_ground();
298 float get_Vy ( void )
300 float Vyy = current_aircraft.fdm_state->get_V_east_rel_ground();
304 float get_Vz ( void )
306 float Vzz = current_aircraft.fdm_state->get_V_down_rel_ground();
310 float get_Ax ( void )
312 float Ax = current_aircraft.fdm_state->get_V_dot_north();
316 float get_Ay ( void )
318 float Ay = current_aircraft.fdm_state->get_V_dot_east();
322 float get_Az ( void )
324 float Az = current_aircraft.fdm_state->get_V_dot_down();
328 float get_anzg ( void )
330 float anzg = current_aircraft.fdm_state->get_N_Z_cg();
336 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
337 return fdm->get_iaux1();
342 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
343 return fdm->get_iaux2();
348 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
349 return fdm->get_iaux3();
354 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
355 return fdm->get_iaux4();
360 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
361 return fdm->get_iaux5();
366 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
367 return fdm->get_iaux6();
372 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
373 return fdm->get_iaux7();
378 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
379 return fdm->get_iaux8();
384 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
385 return fdm->get_iaux9();
388 int get_iaux10 (void)
390 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
391 return fdm->get_iaux10();
394 int get_iaux11 (void)
396 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
397 return fdm->get_iaux11();
400 int get_iaux12 (void)
402 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
403 return fdm->get_iaux12();
406 float get_aux1 (void)
408 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
409 return fdm->get_aux1();
412 float get_aux2 (void)
414 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
415 return fdm->get_aux2();
418 float get_aux3 (void)
420 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
421 return fdm->get_aux3();
424 float get_aux4 (void)
426 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
427 return fdm->get_aux4();
430 float get_aux5 (void)
432 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
433 return fdm->get_aux5();
436 float get_aux6 (void)
438 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
439 return fdm->get_aux6();
442 float get_aux7 (void)
444 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
445 return fdm->get_aux7();
448 float get_aux8 (void)
450 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
451 return fdm->get_aux8();
454 float get_aux9 (void)
456 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
457 return fdm->get_aux9();
460 float get_aux10 (void)
462 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
463 return fdm->get_aux10();
466 float get_aux11 (void)
468 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
469 return fdm->get_aux11();
472 float get_aux12 (void)
474 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
475 return fdm->get_aux12();
478 float get_aux13 (void)
480 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
481 return fdm->get_aux13();
484 float get_aux14 (void)
486 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
487 return fdm->get_aux14();
490 float get_aux15 (void)
492 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
493 return fdm->get_aux15();
496 float get_aux16 (void)
498 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
499 return fdm->get_aux16();
502 float get_aux17 (void)
504 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
505 return fdm->get_aux17();
508 float get_aux18 (void)
510 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
511 return fdm->get_aux18();
514 // $$$ end - added, VS Renganathan 13 Oct 2K
518 /****************************************************************************/
519 /* Convert degrees to dd mm'ss.s" (DMS-Format) */
520 /****************************************************************************/
521 char *dmshh_format(double degrees)
532 min_part = 60.0 * (degrees - deg_part);
533 sec_part = 3600.0 * (degrees - deg_part - min_part / 60.0);
535 /* Round off hundredths */
536 if (sec_part + 0.005 >= 60.0)
537 sec_part -= 60.0, min_part += 1;
539 min_part -= 60, deg_part += 1;
541 sprintf(buf,"%02d*%02d %05.2f",deg_part,min_part,sec_part);
548 /************************************************************************
549 Convert degrees to dd mm.mmm' (DMM-Format)
550 Description: Converts using a round-off factor tailored to the required
551 precision of the minutes field (three decimal places). Round-off
552 prevents function from returning a minutes value of 60.
554 Input arguments: Coordinate value in decimal degrees
556 ************************************************************************/
557 static char *toDM(float dd)
568 /* round for minutes expressed to three decimal places */
569 tempdd = fabs(dd) + (5.0E-4 / 60.0);
571 mn = fabs( (tempdd - (double)(deg)) * 60.0 - 4.999E-4 );
573 sprintf(dm, "%d*%06.3f", deg, mn);
578 /************************************************************************
579 Convert degrees to dd mm'ss.s'' (DMS-Format)
580 Description: Converts using a round-off factor tailored to the required
581 precision of the seconds field (one decimal place). Round-off
582 prevents function from returning a seconds value of 60.
584 Input arguments: Coordinate value in decimal degrees
586 ************************************************************************/
587 static char *toDMS(float dd)
590 double tempdd, tempmin;
599 /* round up for seconds expressed to one decimal place */
600 tempdd = fabs(dd) + (0.05 / 3600.0);
602 tempmin = (tempdd - (double)(deg)) * 60.0;
604 sec = fabs( (tempmin - (double)(mn)) * 60.0 - 0.049 );
606 sprintf(dms, "%d*%02d %04.1f", deg, mn, sec);
611 // Have to set the LatLon display type
612 //static char *(*fgLatLonFormat)(float) = toDM;
613 static char *(*fgLatLonFormat)(float);
615 char *coord_format_lat(float latitude)
620 // dmshh_format(latitude),
623 fgLatLonFormat(latitude),
624 latitude > 0 ? 'N' : 'S');
628 char *coord_format_lon(float longitude)
633 // dmshh_format(longitude),
636 fgLatLonFormat(longitude),
637 longitude > 0 ? 'E' : 'W');
641 void fgLatLonFormatToggle( puObject *)
643 static int toggle = 0;
646 fgLatLonFormat = toDM;
648 fgLatLonFormat = toDMS;
654 char *coord_format_latlon(double latitude, double longitude)
656 static char buf[1024];
658 sprintf(buf,"%s%c %s%c",
659 dmshh_format(latitude),
660 latitude > 0 ? 'N' : 'S',
661 dmshh_format(longitude),
662 longitude > 0 ? 'E' : 'W');
668 bool fgCockpitInit( fgAIRCRAFT *cur_aircraft )
670 FG_LOG( FG_COCKPIT, FG_INFO, "Initializing cockpit subsystem" );
672 // cockpit->code = 1; /* It will be aircraft dependent */
673 // cockpit->status = 0;
675 // If aircraft has HUD specified we will get the specs from its def
676 // file. For now we will depend upon hard coding in hud?
678 // We must insure that the existing instrument link is purged.
679 // This is done by deleting the links in the list.
681 // HI_Head is now a null pointer so we can generate a new list from the
684 fgHUDInit( cur_aircraft );
685 ac_cockpit = new fg_Cockpit();
687 // Have to set the LatLon display type
688 fgLatLonFormat = toDM;
690 FG_LOG( FG_COCKPIT, FG_INFO,
691 " Code " << ac_cockpit->code() << " Status "
692 << ac_cockpit->status() );
697 void fgCockpitUpdate( void ) {
699 FG_LOG( FG_COCKPIT, FG_DEBUG,
700 "Cockpit: code " << ac_cockpit->code() << " status "
701 << ac_cockpit->status() );
703 int iwidth = globals->get_current_view()->get_winWidth();
704 int iheight = globals->get_current_view()->get_winHeight();
705 float width = iwidth;
706 float height = iheight;
708 if ( globals->get_options()->get_hud_status() ) {
709 // This will check the global hud linked list pointer.
710 // If these is anything to draw it will.
713 #define DISPLAY_COUNTER
714 #ifdef DISPLAY_COUNTER
718 float fps = get_frame_rate();
719 // float tris = fps * get_vfc_tris_drawn();
720 // float culled = fps * get_vfc_tris_culled();
721 // sprintf(buf,"%-4.1f %7.0f %7.0f", fps, tris, culled);
722 sprintf(buf,"%-5.1f", fps);
724 glMatrixMode(GL_PROJECTION);
727 gluOrtho2D(0, width, 0, height);
728 glMatrixMode(GL_MODELVIEW);
732 glDisable(GL_DEPTH_TEST);
733 glDisable(GL_LIGHTING);
735 glColor3f (0.9, 0.4, 0.2);
737 guiFnt.drawString( buf,
738 // width/2 - guiFnt.getStringWidth(buf)/2,
739 int(width - guiFnt.getStringWidth(buf) - 10),
741 glEnable(GL_DEPTH_TEST);
742 glEnable(GL_LIGHTING);
743 glMatrixMode(GL_PROJECTION);
745 glMatrixMode(GL_MODELVIEW);
748 #endif // #ifdef DISPLAY_COUNTER
750 xglViewport( 0, 0, iwidth, iheight );
752 if (current_panel != 0)
753 current_panel->update();