1 /**************************************************************************
2 * GLUTmain.c -- top level sim routines
4 * Written by Curtis Olson for OpenGL, started May 1997.
6 * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * (Log is kept at end of this file)
24 **************************************************************************/
44 #include <Main/GLUTkey.h>
45 #include <Main/fg_init.h>
46 #include <Main/fg_debug.h>
47 #include <Main/fg_getopt.h>
48 #include <Main/views.h>
50 #include <Include/cmdargs.h> // Line to command line arguments
51 #include <Include/fg_constants.h> // for VERSION
52 #include <Include/general.h>
54 #include <Aircraft/aircraft.h>
55 #include <Astro/moon.h>
56 #include <Astro/planets.h>
57 #include <Astro/sky.h>
58 #include <Astro/stars.h>
59 #include <Astro/sun.h>
60 #include <Cockpit/cockpit.h>
61 #include <Joystick/joystick.h>
62 #include <Math/fg_geodesy.h>
63 #include <Math/mat3.h>
64 #include <Math/polar.h>
65 #include <Scenery/scenery.h>
66 #include <Scenery/tilemgr.h>
67 #include <Time/event.h>
68 #include <Time/fg_time.h>
69 #include <Time/fg_timer.h>
70 #include <Time/sunpos.h>
71 #include <Weather/weather.h>
74 /* This is a record containing global housekeeping information */
78 static GLfloat win_ratio = 1.0;
79 static GLint winWidth, winHeight;
82 /* pointer to scenery structure */
83 /* static GLint scenery, runway; */
90 /* Yet another hack. This one used by the HUD code. Michele */
93 /* Yet another other hack. Used for my prototype instrument code. (Durk) */
94 int displayInstruments;
96 // The following defines flight gear options. Because glutlib will also
97 // want to parse its own options, those options must not be included here
98 // or they will get parsed by the main program option parser. Hence case
99 // is significant for any option added that might be in conflict with
102 // glutlib parses for:
104 // -direct (invalid in Win32)
108 // -indirect (invalid in Win32)
111 // Note that glutlib depends upon strings while this program's
112 // option parser wants only initial characters followed by numbers
115 const char *fg_cmdargopts = "a:c:Hhp:r:v:x:?";
118 // -a aircraftfilename aircraft start over ride
119 // -c0x0000 - 0xffffffff debug class setting
120 // H,h.? help on command line use (does not need Option struct)
122 // -r flightgear root path to program support files
123 // -v0 -v1 initial view mode (hud/no_hud currently)
124 // -xlogpathname debug logfile name
126 // Defaults in arguments to indicate not set on command line.
127 // Program defaults set variables from constants if neither command
128 // options or environmental variables effect values.
131 char acArgbuf [ MAXPATH + 1] = "\0";
132 int debugArgValue = -2;
133 int priorityArgValue = -1;
134 char rootArgbuf [ MAXPATH + 1] = "\0";
136 char logArgbuf [ MAXPATH + 1] = "\0";
138 // There is a reason for defining the option structs by name and then
139 // creating an array of pointers to options. C++ is unfriendly to
140 // initializing arrays of objects that are not built in types. Always
141 // look forward. (Besides, you can follow what is going on better and
142 // add or modify with greater security. -ch
144 Option aircraftOption = { 'a',
147 "Startup aircraft pathname override"
149 Option debugOption = { 'c',
150 OPT_LHEX, // Long int (32 bits)
154 Option priorityOption = { 'p',
157 "Debug priority Threshold"
159 Option rootOption = { 'r',
162 "Root directory for execution"
164 Option hudOption = { 'v',
167 "View mode start" // Naked,HUD,Panel,Chase,Tower...
170 // Only naked view and HUD are implemented at this time
172 Option logfileOption = { 'x',
175 "Debug log file name"
179 #define OptsDefined 6
180 Option *CmdLineOptions[ OptsDefined ] = {
189 const char *DefaultRootDir = "\\Flightgear";
190 const char *DefaultAircraft = "Navion.acf";
191 const char *DefaultDebuglog = "fgdebug.log";
192 const int DefaultViewMode = HUD_VIEW;
194 // Debug defaults handled in fg_debug.c
196 /**************************************************************************
197 * fgInitVisuals() -- Initialize various GL/view parameters
198 **************************************************************************/
200 static void fgInitVisuals( void ) {
204 l = &cur_light_params;
205 w = ¤t_weather;
207 /* xglDisable( GL_DITHER ); */
209 /* If enabled, normal vectors specified with glNormal are scaled
210 to unit length after transformation. See glNormal. */
211 xglEnable( GL_NORMALIZE );
213 xglEnable( GL_LIGHTING );
214 xglEnable( GL_LIGHT0 );
215 xglLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec );
217 xglFogi (GL_FOG_MODE, GL_LINEAR);
218 xglFogf (GL_FOG_START, 10.0);
219 xglFogf (GL_FOG_END, w->visibility);
220 /* xglFogf (GL_FOG_DENSITY, w->visibility); */
221 xglHint (GL_FOG_HINT, GL_NICEST /* GL_FASTEST */ );
223 /* draw wire frame */
224 /* xglPolygonMode(GL_FRONT_AND_BACK,GL_LINE); */
228 /**************************************************************************
229 * Update the view volume, position, and orientation
230 **************************************************************************/
232 static void fgUpdateViewParams( void ) {
238 f = current_aircraft.flight;
239 l = &cur_light_params;
240 // t = &cur_time_params;
243 fgViewUpdate(f, v, l);
245 if (displayInstruments)
247 xglViewport(0, (GLint)(winHeight / 2 ) , (GLint)winWidth, (GLint)winHeight / 2);
248 /* Tell GL we are about to modify the projection parameters */
249 xglMatrixMode(GL_PROJECTION);
251 gluPerspective(45.0, 2.0/win_ratio, 1.0, 100000.0);
255 xglViewport(0, 0 , (GLint)winWidth, (GLint) winHeight);
256 /* Tell GL we are about to modify the projection parameters */
257 xglMatrixMode(GL_PROJECTION);
259 gluPerspective(45.0, 1.0/win_ratio, 10.0, 100000.0);
262 xglMatrixMode(GL_MODELVIEW);
265 /* set up our view volume (default) */
266 gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
267 v->view_pos.x + v->view_forward[0],
268 v->view_pos.y + v->view_forward[1],
269 v->view_pos.z + v->view_forward[2],
270 v->view_up[0], v->view_up[1], v->view_up[2]);
272 /* look almost straight up (testing and eclipse watching) */
273 /* gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
274 v->view_pos.x + v->view_up[0] + .001,
275 v->view_pos.y + v->view_up[1] + .001,
276 v->view_pos.z + v->view_up[2] + .001,
277 v->view_up[0], v->view_up[1], v->view_up[2]); */
279 /* lock view horizontally towards sun (testing) */
280 /* gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
281 v->view_pos.x + v->surface_to_sun[0],
282 v->view_pos.y + v->surface_to_sun[1],
283 v->view_pos.z + v->surface_to_sun[2],
284 v->view_up[0], v->view_up[1], v->view_up[2]); */
286 /* lock view horizontally towards south (testing) */
287 /* gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
288 v->view_pos.x + v->surface_south[0],
289 v->view_pos.y + v->surface_south[1],
290 v->view_pos.z + v->surface_south[2],
291 v->view_up[0], v->view_up[1], v->view_up[2]); */
293 /* set the sun position */
294 xglLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec );
298 /*************************************************************************
299 * Draw a basic instrument panel
300 ************************************************************************/
301 static void fgUpdateInstrViewParams( void ) {
302 xglViewport(0, 0 , (GLint)winWidth, (GLint)winHeight / 2);
304 xglMatrixMode(GL_PROJECTION);
308 gluOrtho2D(0, 640, 0, 480);
309 xglMatrixMode(GL_MODELVIEW);
313 xglColor3f(1.0, 1.0, 1.0);
316 xglDisable(GL_DEPTH_TEST);
317 xglDisable(GL_LIGHTING);
320 xglColor3f (0.5, 0.5, 0.5);
323 xglVertex2f(0.0, 0.00);
324 xglVertex2f(0.0, 480.0);
325 xglVertex2f(640.0,480.0);
326 xglVertex2f(640.0, 0.0);
329 xglRectf(0.0,0.0, 640, 480);
330 xglEnable(GL_DEPTH_TEST);
331 xglEnable(GL_LIGHTING);
332 xglMatrixMode(GL_PROJECTION);
334 xglMatrixMode(GL_MODELVIEW);
339 /**************************************************************************
340 * Update all Visuals (redraws anything graphics related)
341 **************************************************************************/
343 static void fgRenderFrame( void ) {
348 GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
350 l = &cur_light_params;
351 t = &cur_time_params;
354 /* update view volume parameters */
355 fgUpdateViewParams();
357 xglClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
359 /* Tell GL we are switching to model view parameters */
360 xglMatrixMode(GL_MODELVIEW);
361 /* xglLoadIdentity(); */
364 xglDisable( GL_DEPTH_TEST );
365 xglDisable( GL_LIGHTING );
366 xglDisable( GL_CULL_FACE );
367 xglDisable( GL_FOG );
368 xglShadeModel( GL_SMOOTH );
371 /* setup transformation for drawing astronomical objects */
373 /* Translate to view position */
374 xglTranslatef( v->view_pos.x, v->view_pos.y, v->view_pos.z );
375 /* Rotate based on gst (sidereal time) */
376 angle = t->gst * 15.041085; /* should be 15.041085, Curt thought it was 15*/
377 /* printf("Rotating astro objects by %.2f degrees\n",angle); */
378 xglRotatef( angle, 0.0, 0.0, -1.0 );
380 /* draw stars and planets */
387 /* render the moon */
388 xglEnable( GL_LIGHTING );
389 /* set lighting parameters */
390 xglLightfv(GL_LIGHT0, GL_AMBIENT, white );
391 xglLightfv(GL_LIGHT0, GL_DIFFUSE, white );
392 xglEnable( GL_CULL_FACE );
394 /* Let's try some blending technique's (Durk)*/
396 glBlendFunc(GL_ONE, GL_ONE);
403 xglShadeModel( /* GL_FLAT */ GL_SMOOTH );
404 xglEnable( GL_DEPTH_TEST );
406 xglFogfv (GL_FOG_COLOR, l->fog_color);
407 /* set lighting parameters */
408 xglLightfv(GL_LIGHT0, GL_AMBIENT, l->scene_ambient );
409 xglLightfv(GL_LIGHT0, GL_DIFFUSE, l->scene_diffuse );
410 /* texture parameters */
411 xglEnable( GL_TEXTURE_2D ); /* xglDisable( GL_TEXTURE_2D ); */
412 xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ) ;
413 xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ) ;
414 xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ) ;
415 xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
416 GL_LINEAR /* GL_LINEAR_MIPMAP_LINEAR */ ) ;
417 xglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
418 xglHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
422 xglDisable( GL_TEXTURE_2D );
429 /* display instruments */
430 if (displayInstruments) {
431 fgUpdateInstrViewParams();
438 /**************************************************************************
439 * Update internal time dependent calculations (i.e. flight model)
440 **************************************************************************/
442 void fgUpdateTimeDepCalcs(int multi_loop) {
448 f = current_aircraft.flight;
449 t = &cur_time_params;
452 /* update the flight model */
453 if ( multi_loop < 0 ) {
454 multi_loop = DEFAULT_MULTILOOP;
457 /* printf("updating flight model x %d\n", multi_loop); */
458 fgFlightModelUpdate(FG_LARCSIM, f, multi_loop);
460 /* update the view angle */
461 for ( i = 0; i < multi_loop; i++ ) {
462 if ( fabs(v->goal_view_offset - v->view_offset) < 0.05 ) {
463 v->view_offset = v->goal_view_offset;
466 /* move v->view_offset towards v->goal_view_offset */
467 if ( v->goal_view_offset > v->view_offset ) {
468 if ( v->goal_view_offset - v->view_offset < FG_PI ) {
469 v->view_offset += 0.01;
471 v->view_offset -= 0.01;
474 if ( v->view_offset - v->goal_view_offset < FG_PI ) {
475 v->view_offset -= 0.01;
477 v->view_offset += 0.01;
480 if ( v->view_offset > FG_2PI ) {
481 v->view_offset -= FG_2PI;
482 } else if ( v->view_offset < 0 ) {
483 v->view_offset += FG_2PI;
490 void fgInitTimeDepCalcs( void ) {
491 /* initialize timer */
493 #ifdef HAVE_SETITIMER
494 fgTimerInit( 1.0 / DEFAULT_TIMER_HZ, fgUpdateTimeDepCalcs );
495 #endif HAVE_SETITIMER
500 /**************************************************************************
501 * Scenery management routines
502 **************************************************************************/
504 /* static void fgSceneryInit_OLD() { */
506 /* scenery = fgSceneryCompile_OLD();
507 runway = fgRunwayHack_OLD(0.69, 53.07);
511 /* create the scenery */
512 /* GLint fgSceneryCompile_OLD() {
515 scenery = mesh2GL(mesh_ptr_OLD);
521 /* hack in a runway */
522 /* GLint fgRunwayHack_OLD(double width, double length) {
523 static GLfloat concrete[4] = { 0.5, 0.5, 0.5, 1.0 };
524 static GLfloat line[4] = { 0.9, 0.9, 0.9, 1.0 };
527 float line_len, line_width_2, cur_pos;
529 runway = xglGenLists(1);
530 xglNewList(runway, GL_COMPILE);
533 /* xglBegin(GL_POLYGON);
534 xglMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, concrete );
535 xglNormal3f(0.0, 0.0, 1.0);
537 xglVertex3d( 0.0, -width/2.0, 0.0);
538 xglVertex3d( 0.0, width/2.0, 0.0);
539 xglVertex3d(length, width/2.0, 0.0);
540 xglVertex3d(length, -width/2.0, 0.0);
543 /* draw center line */
544 /* xglMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, line );
545 line_len = length / ( 2 * num_lines + 1);
546 printf("line_len = %.3f\n", line_len);
549 for ( i = 0; i < num_lines; i++ ) {
550 xglBegin(GL_POLYGON);
551 xglVertex3d( cur_pos, -line_width_2, 0.005);
552 xglVertex3d( cur_pos, line_width_2, 0.005);
554 xglVertex3d( cur_pos, line_width_2, 0.005);
555 xglVertex3d( cur_pos, -line_width_2, 0.005);
566 /* draw the scenery */
567 /*static void fgSceneryDraw_OLD() {
568 static float z = 32.35;
572 xglCallList(scenery);
574 printf("*** Drawing runway at %.2f\n", z);
576 xglTranslatef( -398391.28, 120070.41, 32.35);
577 xglRotatef(170.0, 0.0, 0.0, 1.0);
585 /* What should we do when we have nothing else to do? How about get
586 * ready for the next move and update the display? */
587 static void fgMainLoop( void ) {
588 static int remainder = 0;
589 int elapsed, multi_loop;
591 /* double joy_x, joy_y; */
592 /* int joy_b1, joy_b2; */
597 fgPrintf( FG_ALL, FG_DEBUG, "Running Main Loop\n");
598 fgPrintf( FG_ALL, FG_DEBUG, "======= ==== ====\n");
600 a = ¤t_aircraft;
602 t = &cur_time_params;
608 /* fgJoystickRead( &joy_x, &joy_y, &joy_b1, &joy_b2 );
609 printf( "Joystick X %f Y %f B1 %d B2 %d\n",
610 joy_x, joy_y, joy_b1, joy_b2 );
612 fgAileronSet( joy_x ); */
614 /* Calculate model iterations needed */
615 elapsed = fgGetTimeInterval();
616 fgPrintf( FG_ALL, FG_BULK,
617 "Time interval is = %d, previous remainder is = %d\n",
619 fgPrintf( FG_ALL, FG_BULK,
620 "--> Frame rate is = %.2f\n", 1000.0 / (float)elapsed);
621 elapsed += remainder;
623 multi_loop = (int)(((float)elapsed * 0.001) * DEFAULT_MODEL_HZ);
624 remainder = elapsed - ((multi_loop*1000) / DEFAULT_MODEL_HZ);
625 fgPrintf( FG_ALL, FG_BULK,
626 "Model iterations needed = %d, new remainder = %d\n",
627 multi_loop, remainder);
629 /* Run flight model */
630 if ( ! use_signals ) {
632 fgUpdateTimeDepCalcs(multi_loop);
635 /* I'm just sticking this here for now, it should probably move
637 /* cur_elev = mesh_altitude(FG_Longitude * RAD_TO_ARCSEC,
638 FG_Latitude * RAD_TO_ARCSEC); */
639 /* there is no ground collision detection really, so for now I
640 * just hard code the ground elevation to be 0 */
643 /* printf("Ground elevation is %.2f meters here.\n", cur_elev); */
644 /* FG_Runway_altitude = cur_elev * METER_TO_FEET; */
646 if ( FG_Altitude * FEET_TO_METER < cur_elev + 3.758099) {
647 /* set this here, otherwise if we set runway height above our
648 current height we get a really nasty bounce. */
649 FG_Runway_altitude = FG_Altitude - 3.758099;
651 /* now set aircraft altitude above ground */
652 FG_Altitude = cur_elev * METER_TO_FEET + 3.758099;
653 fgPrintf( FG_ALL, FG_BULK, "<*> resetting altitude to %.0f meters\n",
654 FG_Altitude * FEET_TO_METER);
657 fgAircraftOutputCurrent(a);
659 /* see if we need to load any new scenery tiles */
662 /* Process/manage pending events */
668 fgPrintf( FG_ALL, FG_DEBUG, "\n");
672 /**************************************************************************
673 * Handle new window size or exposure
674 **************************************************************************/
676 static void fgReshape( int width, int height ) {
677 /* Do this so we can call fgReshape(0,0) ourselves without having to know
678 * what the values of width & height are. */
679 if ( (height > 0) && (width > 0) ) {
680 win_ratio = (GLfloat) height / (GLfloat) width;
686 /* Inform gl of our view window size (now handled elsewhere) */
687 /* xglViewport(0, 0, (GLint)width, (GLint)height); */
689 fgUpdateViewParams();
691 /* xglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); */
695 /**************************************************************************
697 **************************************************************************/
699 int main( int argc, char *argv[] ) {
701 int parse_result; // Used in command line argument.
703 f = current_aircraft.flight;
704 // First things first... We must have startup options dealt with.
706 printf("Flight Gear: Version %s\n\n", VERSION);
708 /*********************************************************************
709 * Initialize the Window/Graphics environment.
710 **********************************************************************/
712 /* initialize GLUT */
713 xglutInit(&argc, argv);
715 /* Define Display Parameters */
716 xglutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
718 /* Define initial window size */
719 xglutInitWindowSize(640, 480);
721 /* Initialize windows */
722 xglutCreateWindow("Flight Gear");
724 // xglutInit above will extract all non-general program command line.
725 // We only need wory about our own.
727 parse_result = getargs( argc, argv, OptsDefined, CmdLineOptions, NULL);
729 switch( parse_result ) {
734 print_desc( OptsDefined, CmdLineOptions );
739 printf( "Flight Gear: Command line invalid.");
743 // Deal with the effects of options no set by manipulating the command
744 // line, or possibly set to invalid states.
746 if(( viewArg >= 0) && (viewArg <= 1)) {
747 show_hud = viewArg; // For now view_mode TRUE - no HUD, else show_hud.
749 show_hud = DefaultViewMode;
752 // All other command line option responses are handled in the various
753 // initialization routines (or ignored if not implemented.
755 // This is the general house keeping init routine. It initializes the
756 // debug trail scheme and then any other stuff.
758 if( !fgInitGeneral()) {
760 // This is the top level init routine which calls all the other
761 // subsystem initialization routines. If you are adding a
762 // subsystem to flight gear, its initialization call should
763 // located in this routine.
764 if( !fgInitSubsystems()) {
766 // setup view parameters, only makes GL calls
770 /* init timer routines, signals, etc. Arrange for an alarm
771 signal to be generated, etc. */
772 fgInitTimeDepCalcs();
775 /**********************************************************
776 * Initialize the GLUT Event Handlers.
777 **********************************************************/
779 // call fgReshape() on window resizes
780 xglutReshapeFunc( fgReshape );
782 // call key() on keyboard event
783 xglutKeyboardFunc( GLUTkey );
784 glutSpecialFunc( GLUTspecialkey );
786 // call fgMainLoop() whenever there is
787 // nothing else to do
788 xglutIdleFunc( fgMainLoop );
791 xglutDisplayFunc( fgRenderFrame );
793 // pass control off to the GLUT event handler
796 } // End if subsystems initialize ok
797 } // End if general initializations went ok
799 if( fg_DebugOutput ) {
800 fclose( fg_DebugOutput );
808 void __eprintf( void ) {
814 /* Revision 1.69 1998/04/08 23:35:34 curt
815 /* Tweaks to Gnu automake/autoconf system.
817 * Revision 1.68 1998/04/03 22:09:03 curt
818 * Converting to Gnu autoconf system.
820 * Revision 1.67 1998/03/23 21:24:37 curt
821 * Source code formating tweaks.
823 * Revision 1.66 1998/03/14 00:31:20 curt
824 * Beginning initial terrain texturing experiments.
826 * Revision 1.65 1998/03/09 22:45:57 curt
827 * Minor tweaks for building on sparc platform.
829 * Revision 1.64 1998/02/20 00:16:23 curt
832 * Revision 1.63 1998/02/16 16:17:39 curt
835 * Revision 1.62 1998/02/16 13:39:42 curt
836 * Miscellaneous weekend tweaks. Fixed? a cache problem that caused whole
837 * tiles to occasionally be missing.
839 * Revision 1.61 1998/02/12 21:59:46 curt
840 * Incorporated code changes contributed by Charlie Hotchkiss
841 * <chotchkiss@namg.us.anritsu.com>
843 * Revision 1.60 1998/02/11 02:50:40 curt
846 * Revision 1.59 1998/02/09 22:56:54 curt
847 * Removed "depend" files from cvs control. Other minor make tweaks.
849 * Revision 1.58 1998/02/09 15:07:49 curt
852 * Revision 1.57 1998/02/07 15:29:40 curt
853 * Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
854 * <chotchkiss@namg.us.anritsu.com>
856 * Revision 1.56 1998/02/03 23:20:23 curt
857 * Lots of little tweaks to fix various consistency problems discovered by
858 * Solaris' CC. Fixed a bug in fg_debug.c with how the fgPrintf() wrapper
859 * passed arguments along to the real printf(). Also incorporated HUD changes
860 * by Michele America.
862 * Revision 1.55 1998/02/02 20:53:58 curt
863 * Incorporated Durk's changes.
865 * Revision 1.54 1998/01/31 00:43:10 curt
866 * Added MetroWorks patches from Carmen Volpe.
868 * Revision 1.53 1998/01/27 18:35:54 curt
871 * Revision 1.52 1998/01/27 00:47:56 curt
872 * Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
873 * system and commandline/config file processing code.
875 * Revision 1.51 1998/01/26 15:57:05 curt
876 * Tweaks for dynamic scenery development.
878 * Revision 1.50 1998/01/19 19:27:07 curt
879 * Merged in make system changes from Bob Kuehne <rpk@sgi.com>
880 * This should simplify things tremendously.
882 * Revision 1.49 1998/01/19 18:40:31 curt
883 * Tons of little changes to clean up the code and to remove fatal errors
884 * when building with the c++ compiler.
886 * Revision 1.48 1998/01/19 18:35:46 curt
887 * Minor tweaks and fixes for cygwin32.
889 * Revision 1.47 1998/01/13 00:23:08 curt
890 * Initial changes to support loading and management of scenery tiles. Note,
891 * there's still a fair amount of work left to be done.
893 * Revision 1.46 1998/01/08 02:22:06 curt
894 * Beginning to integrate Tile management subsystem.
896 * Revision 1.45 1998/01/07 03:18:55 curt
897 * Moved astronomical stuff from .../Src/Scenery to .../Src/Astro/
899 * Revision 1.44 1997/12/30 22:22:31 curt
900 * Further integration of event manager.
902 * Revision 1.43 1997/12/30 20:47:43 curt
903 * Integrated new event manager with subsystem initializations.
905 * Revision 1.42 1997/12/30 16:36:47 curt
906 * Merged in Durk's changes ...
908 * Revision 1.41 1997/12/30 13:06:56 curt
909 * A couple lighting tweaks ...
911 * Revision 1.40 1997/12/30 01:38:37 curt
912 * Switched back to per vertex normals and smooth shading for terrain.
914 * Revision 1.39 1997/12/22 23:45:45 curt
915 * First stab at sunset/sunrise sky glow effects.
917 * Revision 1.38 1997/12/22 04:14:28 curt
918 * Aligned sky with sun so dusk/dawn effects can be correct relative to the sun.
920 * Revision 1.37 1997/12/19 23:34:03 curt
921 * Lot's of tweaking with sky rendering and lighting.
923 * Revision 1.36 1997/12/19 16:44:57 curt
924 * Working on scene rendering order and options.
926 * Revision 1.35 1997/12/18 23:32:32 curt
927 * First stab at sky dome actually starting to look reasonable. :-)
929 * Revision 1.34 1997/12/17 23:13:34 curt
930 * Began working on rendering a sky.
932 * Revision 1.33 1997/12/15 23:54:45 curt
933 * Add xgl wrappers for debugging.
934 * Generate terrain normals on the fly.
936 * Revision 1.32 1997/12/15 20:59:08 curt
939 * Revision 1.31 1997/12/12 21:41:25 curt
940 * More light/material property tweaking ... still a ways off.
942 * Revision 1.30 1997/12/12 19:52:47 curt
943 * Working on lightling and material properties.
945 * Revision 1.29 1997/12/11 04:43:54 curt
946 * Fixed sun vector and lighting problems. I thing the moon is now lit
949 * Revision 1.28 1997/12/10 22:37:45 curt
950 * Prepended "fg" on the name of all global structures that didn't have it yet.
951 * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
953 * Revision 1.27 1997/12/09 05:11:54 curt
954 * Working on tweaking lighting.
956 * Revision 1.26 1997/12/09 04:25:29 curt
957 * Working on adding a global lighting params structure.
959 * Revision 1.25 1997/12/08 22:54:09 curt
960 * Enabled GL_CULL_FACE.
962 * Revision 1.24 1997/11/25 19:25:32 curt
963 * Changes to integrate Durk's moon/sun code updates + clean up.
965 * Revision 1.23 1997/11/15 18:16:34 curt
968 * Revision 1.22 1997/10/30 12:38:41 curt
969 * Working on new scenery subsystem.
971 * Revision 1.21 1997/09/23 00:29:38 curt
972 * Tweaks to get things to compile with gcc-win32.
974 * Revision 1.20 1997/09/22 14:44:19 curt
975 * Continuing to try to align stars correctly.
977 * Revision 1.19 1997/09/18 16:20:08 curt
978 * At dusk/dawn add/remove stars in stages.
980 * Revision 1.18 1997/09/16 22:14:51 curt
981 * Tweaked time of day lighting equations. Don't draw stars during the day.
983 * Revision 1.17 1997/09/16 15:50:29 curt
984 * Working on star alignment and time issues.
986 * Revision 1.16 1997/09/13 02:00:06 curt
987 * Mostly working on stars and generating sidereal time for accurate star
990 * Revision 1.15 1997/09/05 14:17:27 curt
991 * More tweaking with stars.
993 * Revision 1.14 1997/09/05 01:35:53 curt
994 * Working on getting stars right.
996 * Revision 1.13 1997/09/04 02:17:34 curt
999 * Revision 1.12 1997/08/27 21:32:24 curt
1000 * Restructured view calculation code. Added stars.
1002 * Revision 1.11 1997/08/27 03:30:16 curt
1003 * Changed naming scheme of basic shared structures.
1005 * Revision 1.10 1997/08/25 20:27:22 curt
1006 * Merged in initial HUD and Joystick code.
1008 * Revision 1.9 1997/08/22 21:34:39 curt
1009 * Doing a bit of reorganizing and house cleaning.
1011 * Revision 1.8 1997/08/19 23:55:03 curt
1012 * Worked on better simulating real lighting.
1014 * Revision 1.7 1997/08/16 12:22:38 curt
1015 * Working on improving the lighting/shading.
1017 * Revision 1.6 1997/08/13 20:24:56 curt
1018 * Changes due to changing sunpos interface.
1020 * Revision 1.5 1997/08/06 21:08:32 curt
1021 * Sun position now *really* works (I think) ... I still have sun time warping
1022 * code in place, probably should remove it soon.
1024 * Revision 1.4 1997/08/06 15:41:26 curt
1025 * Working on correct sun position.
1027 * Revision 1.3 1997/08/06 00:24:22 curt
1028 * Working on correct real time sun lighting.
1030 * Revision 1.2 1997/08/04 20:25:15 curt
1031 * Organizational tweaking.
1033 * Revision 1.1 1997/08/02 18:45:00 curt
1034 * Renamed GLmain.c GLUTmain.c
1036 * Revision 1.43 1997/08/02 16:23:47 curt
1039 * Revision 1.42 1997/08/01 19:43:33 curt
1040 * Making progress with coordinate system overhaul.
1042 * Revision 1.41 1997/07/31 22:52:37 curt
1043 * Working on redoing internal coordinate systems & scenery transformations.
1045 * Revision 1.40 1997/07/30 16:12:42 curt
1046 * Moved fg_random routines from Util/ to Math/
1048 * Revision 1.39 1997/07/21 14:45:01 curt
1051 * Revision 1.38 1997/07/19 23:04:47 curt
1052 * Added an initial weather section.
1054 * Revision 1.37 1997/07/19 22:34:02 curt
1055 * Moved PI definitions to ../constants.h
1056 * Moved random() stuff to ../Utils/ and renamed fg_random()
1058 * Revision 1.36 1997/07/18 23:41:25 curt
1059 * Tweaks for building with Cygnus Win32 compiler.
1061 * Revision 1.35 1997/07/18 14:28:34 curt
1062 * Hacked in some support for wind/turbulence.
1064 * Revision 1.34 1997/07/16 20:04:48 curt
1065 * Minor tweaks to aid Win32 port.
1067 * Revision 1.33 1997/07/12 03:50:20 curt
1068 * Added an #include <Windows32/Base.h> to help compiling for Win32
1070 * Revision 1.32 1997/07/11 03:23:18 curt
1071 * Solved some scenery display/orientation problems. Still have a positioning
1072 * (or transformation?) problem.
1074 * Revision 1.31 1997/07/11 01:29:58 curt
1075 * More tweaking of terrian floor.
1077 * Revision 1.30 1997/07/10 04:26:37 curt
1078 * We now can interpolated ground elevation for any position in the grid. We
1079 * can use this to enforce a "hard" ground. We still need to enforce some
1080 * bounds checking so that we don't try to lookup data points outside the
1083 * Revision 1.29 1997/07/09 21:31:12 curt
1084 * Working on making the ground "hard."
1086 * Revision 1.28 1997/07/08 18:20:12 curt
1087 * Working on establishing a hard ground.
1089 * Revision 1.27 1997/07/07 20:59:49 curt
1090 * Working on scenery transformations to enable us to fly fluidly over the
1091 * poles with no discontinuity/distortion in scenery.
1093 * Revision 1.26 1997/07/05 20:43:34 curt
1094 * renamed mat3 directory to Math so we could add other math related routines.
1096 * Revision 1.25 1997/06/29 21:19:17 curt
1097 * Working on scenery management system.
1099 * Revision 1.24 1997/06/26 22:14:53 curt
1100 * Beginning work on a scenery management system.
1102 * Revision 1.23 1997/06/26 19:08:33 curt
1103 * Restructuring make, adding automatic "make dep" support.
1105 * Revision 1.22 1997/06/25 15:39:47 curt
1106 * Minor changes to compile with rsxnt/win32.
1108 * Revision 1.21 1997/06/22 21:44:41 curt
1109 * Working on intergrating the VRML (subset) parser.
1111 * Revision 1.20 1997/06/21 17:12:53 curt
1112 * Capitalized subdirectory names.
1114 * Revision 1.19 1997/06/18 04:10:31 curt
1115 * A couple more runway tweaks ...
1117 * Revision 1.18 1997/06/18 02:21:24 curt
1118 * Hacked in a runway
1120 * Revision 1.17 1997/06/17 16:51:58 curt
1121 * Timer interval stuff now uses gettimeofday() instead of ftime()
1123 * Revision 1.16 1997/06/17 04:19:16 curt
1124 * More timer related tweaks with respect to view direction changes.
1126 * Revision 1.15 1997/06/17 03:41:10 curt
1127 * Nonsignal based interval timing is now working.
1128 * This would be a good time to look at cleaning up the code structure a bit.
1130 * Revision 1.14 1997/06/16 19:32:51 curt
1131 * Starting to add general timer support.
1133 * Revision 1.13 1997/06/02 03:40:06 curt
1134 * A tiny bit more view tweaking.
1136 * Revision 1.12 1997/06/02 03:01:38 curt
1137 * Working on views (side, front, back, transitions, etc.)
1139 * Revision 1.11 1997/05/31 19:16:25 curt
1140 * Elevator trim added.
1142 * Revision 1.10 1997/05/31 04:13:52 curt
1145 * Continuing work on the LaRCsim flight model integration.
1146 * Added some MSFS-like keyboard input handling.
1148 * Revision 1.9 1997/05/30 19:27:01 curt
1149 * The LaRCsim flight model is starting to look like it is working.
1151 * Revision 1.8 1997/05/30 03:54:10 curt
1152 * Made a bit more progress towards integrating the LaRCsim flight model.
1154 * Revision 1.7 1997/05/29 22:39:49 curt
1155 * Working on incorporating the LaRCsim flight model.
1157 * Revision 1.6 1997/05/29 12:31:39 curt
1158 * Minor tweaks, moving towards general flight model integration.
1160 * Revision 1.5 1997/05/29 02:33:23 curt
1161 * Updated to reflect changing interfaces in other "modules."
1163 * Revision 1.4 1997/05/27 17:44:31 curt
1164 * Renamed & rearranged variables and routines. Added some initial simple
1165 * timer/alarm routines so the flight model can be updated on a regular
1168 * Revision 1.3 1997/05/23 15:40:25 curt
1169 * Added GNU copyright headers.
1172 * Revision 1.2 1997/05/23 00:35:12 curt
1173 * Trying to get fog to work ...
1175 * Revision 1.1 1997/05/21 15:57:51 curt
1176 * Renamed due to added GLUT support.
1178 * Revision 1.3 1997/05/19 18:22:42 curt
1179 * Parameter tweaking ... starting to stub in fog support.
1181 * Revision 1.2 1997/05/17 00:17:34 curt
1182 * Trying to stub in support for standard OpenGL.
1184 * Revision 1.1 1997/05/16 16:05:52 curt