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.
39 #include <Aircraft/aircraft.hxx>
40 #include <Debug/logstream.hxx>
41 #include <Include/fg_constants.h>
42 #include <Include/general.hxx>
43 #include <Main/options.hxx>
44 #include <Main/views.hxx>
45 #include <Math/fg_random.h>
46 #include <Math/mat3.h>
47 #include <Math/polar3d.hxx>
48 #include <Scenery/scenery.hxx>
49 #include <Time/fg_timer.hxx>
50 #include <Time/fg_time.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 fntRenderer *HUDtext = 0;
61 float HUD_TextSize = 0;
65 // The following routines obtain information concerntin the aircraft's
66 // current state and return it to calling instrument display routines.
67 // They should eventually be member functions of the aircraft.
70 float get_latitude( void )
74 lat = current_aircraft.fdm_state->get_Latitude() * RAD_TO_DEG;
81 float get_lat_min( void )
85 a = current_aircraft.fdm_state->get_Latitude() * RAD_TO_DEG;
89 d = (double) ( (int) a);
90 float lat_min = (a - d) * 60.0;
95 float get_longitude( void )
99 lon = current_aircraft.fdm_state->get_Longitude() * RAD_TO_DEG;
107 get_formated_gmt_time( void )
110 FGTime *t = FGTime::cur_time_params;
111 const struct tm *p = t->getGmt();
112 sprintf( buf, "%d/%d/%4d %d:%02d:%02d",
113 p->tm_mon+1, p->tm_mday, 1900 + p->tm_year,
114 p->tm_hour, p->tm_min, p->tm_sec);
119 float get_long_min( void )
122 a = current_aircraft.fdm_state->get_Longitude() * RAD_TO_DEG;
126 d = (double) ( (int) a);
127 float lon_min = (a - d) * 60.0;
131 float get_throttleval( void )
133 float throttle = controls.get_throttle( 0 );
134 return (throttle); // Hack limiting to one engine
137 float get_aileronval( void )
139 float aileronval = controls.get_aileron();
143 float get_elevatorval( void )
145 float elevator_val = (float)controls.get_elevator();
149 float get_elev_trimval( void )
151 float elevatorval = controls.get_elevator_trim();
152 return (elevatorval);
155 float get_rudderval( void )
157 float rudderval = controls.get_rudder();
161 float get_speed( void )
163 // Make an explicit function call.
164 float speed = current_aircraft.fdm_state->get_V_equiv_kts()
165 * current_options.get_speed_up();
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();
249 float get_vfc_tris_drawn ( void )
251 float rendered = current_view.get_tris_rendered();
255 float get_vfc_tris_culled ( void )
257 float culled = current_view.get_tris_culled();
261 float get_climb_rate( void )
264 if ( current_options.get_units() == fgOPTIONS::FG_UNITS_FEET ) {
265 climb_rate = current_aircraft.fdm_state->get_Climb_Rate() * 60.0;
267 climb_rate = current_aircraft.fdm_state->get_Climb_Rate() * FEET_TO_METER * 60.0;
273 float get_view_direction( void )
277 view = FG_2PI - current_view.get_view_offset();
278 view = ( current_aircraft.fdm_state->get_Psi() + view) * RAD_TO_DEG;
290 /****************************************************************************/
291 /* Convert degrees to dd mm'ss.s" (DMS-Format) */
292 /****************************************************************************/
293 char *dmshh_format(double degrees)
304 min_part = 60.0 * (degrees - deg_part);
305 sec_part = 3600.0 * (degrees - deg_part - min_part / 60.0);
307 /* Round off hundredths */
308 if (sec_part + 0.005 >= 60.0)
309 sec_part -= 60.0, min_part += 1;
311 min_part -= 60, deg_part += 1;
313 sprintf(buf,"%02d*%02d %05.2f",deg_part,min_part,sec_part);
319 /****************************************************************************/
320 /* Convert degrees to dd mm'ss.s'' (DMS-Format) */
321 /****************************************************************************/
322 static char *toDMS(float a)
332 d = (float) ((int) a);
334 m = (float) ((int) a);
348 sprintf(dms, "%.0f*%02.0f %04.1f", d, m, s);
353 /****************************************************************************/
354 /* Convert degrees to dd mm.mmm' (DMM-Format) */
355 /****************************************************************************/
356 static char *toDM(float a)
367 d = (float) ( (int) a);
376 sprintf(dm, "%.0f*%06.3f", d, m);
380 // Have to set the LatLon display type
381 //static char *(*fgLatLonFormat)(float) = toDM;
382 static char *(*fgLatLonFormat)(float);
384 char *coord_format_lat(float latitude)
389 // dmshh_format(latitude),
392 fgLatLonFormat(latitude),
393 latitude > 0 ? 'N' : 'S');
397 char *coord_format_lon(float longitude)
402 // dmshh_format(longitude),
405 fgLatLonFormat(longitude),
406 longitude > 0 ? 'E' : 'W');
410 void fgLatLonFormatToggle( puObject *)
412 static int toggle = 0;
415 fgLatLonFormat = toDM;
417 fgLatLonFormat = toDMS;
423 char *coord_format_latlon(double latitude, double longitude)
425 static char buf[1024];
427 sprintf(buf,"%s%c %s%c",
428 dmshh_format(latitude),
429 latitude > 0 ? 'N' : 'S',
430 dmshh_format(longitude),
431 longitude > 0 ? 'E' : 'W');
437 bool fgCockpitInit( fgAIRCRAFT *cur_aircraft )
439 FG_LOG( FG_COCKPIT, FG_INFO, "Initializing cockpit subsystem" );
441 // cockpit->code = 1; /* It will be aircraft dependent */
442 // cockpit->status = 0;
444 // If aircraft has HUD specified we will get the specs from its def
445 // file. For now we will depend upon hard coding in hud?
447 // We must insure that the existing instrument link is purged.
448 // This is done by deleting the links in the list.
450 // HI_Head is now a null pointer so we can generate a new list from the
453 fgHUDInit( cur_aircraft );
454 ac_cockpit = new fg_Cockpit();
456 if ( current_options.get_panel_status() ) {
460 // Have to set the LatLon display type
461 fgLatLonFormat = toDM;
463 FG_LOG( FG_COCKPIT, FG_INFO,
464 " Code " << ac_cockpit->code() << " Status "
465 << ac_cockpit->status() );
467 // HUD_TextSize = (current_options.get_xsize() > 1000) ? 10 : 8;
469 HUDtext = new fntRenderer();
470 HUDtext -> setFont ( guiFntHandle ) ;
471 HUDtext -> setPointSize ( HUD_TextSize ) ;
472 HUD_TextList.setFont( HUDtext );
478 void fgCockpitUpdate( void ) {
480 int iwidth = current_view.get_winWidth();
481 int iheight = current_view.get_winHeight();
482 float width = iwidth;
483 float height = iheight;
485 FG_LOG( FG_COCKPIT, FG_DEBUG,
486 "Cockpit: code " << ac_cockpit->code() << " status "
487 << ac_cockpit->status() );
489 if ( current_options.get_hud_status() ) {
490 // This will check the global hud linked list pointer.
491 // If these is anything to draw it will.
494 #define DISPLAY_COUNTER
495 #ifdef DISPLAY_COUNTER
499 float fps = get_frame_rate();
500 // float tris = fps * get_vfc_tris_drawn();
501 // float culled = fps * get_vfc_tris_culled();
502 // sprintf(buf,"%-4.1f %7.0f %7.0f", fps, tris, culled);
503 sprintf(buf,"%-5.1f", fps);
505 glMatrixMode(GL_PROJECTION);
508 gluOrtho2D(0, width, 0, height);
509 glMatrixMode(GL_MODELVIEW);
513 glDisable(GL_DEPTH_TEST);
514 glDisable(GL_LIGHTING);
516 glColor3f (0.9, 0.4, 0.2);
518 guiFnt.drawString( buf,
519 width/2 - guiFnt.getStringWidth(buf)/2,
521 glEnable(GL_DEPTH_TEST);
522 glEnable(GL_LIGHTING);
523 glMatrixMode(GL_PROJECTION);
525 glMatrixMode(GL_MODELVIEW);
528 #endif // #ifdef DISPLAY_COUNTER
530 if( current_options.get_panel_status() &&
531 (fabs( current_view.get_view_offset() ) < 0.2) )
533 xglViewport( 0, 0, iwidth, iheight );
535 FGPanel::OurPanel->Update();