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 <Debug/fg_debug.h>
45 #include <Main/GLUTkey.h>
46 #include <Main/fg_init.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 <Autopilot/autopilot.h>
61 #include <Cockpit/cockpit.h>
62 #include <Joystick/joystick.h>
63 #include <Math/fg_geodesy.h>
64 #include <Math/mat3.h>
65 #include <Math/polar.h>
66 #include <Scenery/scenery.h>
67 #include <Scenery/tilemgr.h>
68 #include <Time/event.h>
69 #include <Time/fg_time.h>
70 #include <Time/fg_timer.h>
71 #include <Time/sunpos.h>
72 #include <Weather/weather.h>
75 /* This is a record containing global housekeeping information */
79 static GLfloat win_ratio = 1.0;
80 static GLint winWidth, winHeight;
83 /* pointer to scenery structure */
84 /* static GLint scenery, runway; */
91 /* Yet another hack. This one used by the HUD code. Michele */
94 /* Yet another other hack. Used for my prototype instrument code. (Durk) */
95 int displayInstruments;
97 // The following defines flight gear options. Because glutlib will also
98 // want to parse its own options, those options must not be included here
99 // or they will get parsed by the main program option parser. Hence case
100 // is significant for any option added that might be in conflict with
103 // glutlib parses for:
105 // -direct (invalid in Win32)
109 // -indirect (invalid in Win32)
112 // Note that glutlib depends upon strings while this program's
113 // option parser wants only initial characters followed by numbers
116 const char *fg_cmdargopts = "a:c:Hhp:r:v:x:?";
119 // -a aircraftfilename aircraft start over ride
120 // -c0x0000 - 0xffffffff debug class setting
121 // H,h.? help on command line use (does not need Option struct)
123 // -r flightgear root path to program support files
124 // -v0 -v1 initial view mode (hud/no_hud currently)
125 // -xlogpathname debug logfile name
127 // Defaults in arguments to indicate not set on command line.
128 // Program defaults set variables from constants if neither command
129 // options or environmental variables effect values.
132 char acArgbuf [ MAXPATH + 1] = "\0";
133 int debugArgValue = -2;
134 int priorityArgValue = -1;
135 char rootArgbuf [ MAXPATH + 1] = "\0";
137 char logArgbuf [ MAXPATH + 1] = "\0";
139 // There is a reason for defining the option structs by name and then
140 // creating an array of pointers to options. C++ is unfriendly to
141 // initializing arrays of objects that are not built in types. Always
142 // look forward. (Besides, you can follow what is going on better and
143 // add or modify with greater security. -ch
145 Option aircraftOption = { 'a',
148 "Startup aircraft pathname override"
150 Option debugOption = { 'c',
151 OPT_LHEX, // Long int (32 bits)
155 Option priorityOption = { 'p',
158 "Debug priority Threshold"
160 Option rootOption = { 'r',
163 "Root directory for execution"
165 Option hudOption = { 'v',
168 "View mode start" // Naked,HUD,Panel,Chase,Tower...
171 // Only naked view and HUD are implemented at this time
173 Option logfileOption = { 'x',
176 "Debug log file name"
180 #define OptsDefined 6
181 Option *CmdLineOptions[ OptsDefined ] = {
190 const char *DefaultRootDir = "\\Flightgear";
191 const char *DefaultAircraft = "Navion.acf";
192 const char *DefaultDebuglog = "fgdebug.log";
193 const int DefaultViewMode = HUD_VIEW;
195 // Debug defaults handled in fg_debug.c
197 /**************************************************************************
198 * fgInitVisuals() -- Initialize various GL/view parameters
199 **************************************************************************/
201 static void fgInitVisuals( void ) {
205 l = &cur_light_params;
206 w = ¤t_weather;
208 /* xglDisable( GL_DITHER ); */
210 /* If enabled, normal vectors specified with glNormal are scaled
211 to unit length after transformation. See glNormal. */
212 xglEnable( GL_NORMALIZE );
214 xglEnable( GL_LIGHTING );
215 xglEnable( GL_LIGHT0 );
216 xglLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec );
218 xglFogi (GL_FOG_MODE, GL_LINEAR);
219 xglFogf (GL_FOG_START, 10.0);
220 xglFogf (GL_FOG_END, w->visibility);
221 /* xglFogf (GL_FOG_DENSITY, w->visibility); */
222 xglHint (GL_FOG_HINT, GL_NICEST /* GL_FASTEST */ );
224 /* draw wire frame */
225 /* xglPolygonMode(GL_FRONT_AND_BACK,GL_LINE); */
229 /**************************************************************************
230 * Update the view volume, position, and orientation
231 **************************************************************************/
233 static void fgUpdateViewParams( void ) {
239 f = current_aircraft.flight;
240 l = &cur_light_params;
241 // t = &cur_time_params;
244 fgViewUpdate(f, v, l);
246 if (displayInstruments)
248 xglViewport(0, (GLint)(winHeight / 2 ) , (GLint)winWidth, (GLint)winHeight / 2);
249 /* Tell GL we are about to modify the projection parameters */
250 xglMatrixMode(GL_PROJECTION);
252 gluPerspective(65.0, 2.0/win_ratio, 1.0, 100000.0);
256 xglViewport(0, 0 , (GLint)winWidth, (GLint) winHeight);
257 /* Tell GL we are about to modify the projection parameters */
258 xglMatrixMode(GL_PROJECTION);
260 gluPerspective(65.0, 1.0/win_ratio, 10.0, 100000.0);
263 xglMatrixMode(GL_MODELVIEW);
266 /* set up our view volume (default) */
267 gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
268 v->view_pos.x + v->view_forward[0],
269 v->view_pos.y + v->view_forward[1],
270 v->view_pos.z + v->view_forward[2],
271 v->view_up[0], v->view_up[1], v->view_up[2]);
273 /* look almost straight up (testing and eclipse watching) */
274 /* gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
275 v->view_pos.x + v->view_up[0] + .001,
276 v->view_pos.y + v->view_up[1] + .001,
277 v->view_pos.z + v->view_up[2] + .001,
278 v->view_up[0], v->view_up[1], v->view_up[2]); */
280 /* lock view horizontally towards sun (testing) */
281 /* gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
282 v->view_pos.x + v->surface_to_sun[0],
283 v->view_pos.y + v->surface_to_sun[1],
284 v->view_pos.z + v->surface_to_sun[2],
285 v->view_up[0], v->view_up[1], v->view_up[2]); */
287 /* lock view horizontally towards south (testing) */
288 /* gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
289 v->view_pos.x + v->surface_south[0],
290 v->view_pos.y + v->surface_south[1],
291 v->view_pos.z + v->surface_south[2],
292 v->view_up[0], v->view_up[1], v->view_up[2]); */
294 /* set the sun position */
295 xglLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec );
299 /*************************************************************************
300 * Draw a basic instrument panel
301 ************************************************************************/
302 static void fgUpdateInstrViewParams( void ) {
303 xglViewport(0, 0 , (GLint)winWidth, (GLint)winHeight / 2);
305 xglMatrixMode(GL_PROJECTION);
309 gluOrtho2D(0, 640, 0, 480);
310 xglMatrixMode(GL_MODELVIEW);
314 xglColor3f(1.0, 1.0, 1.0);
317 xglDisable(GL_DEPTH_TEST);
318 xglDisable(GL_LIGHTING);
321 xglColor3f (0.5, 0.5, 0.5);
324 xglVertex2f(0.0, 0.00);
325 xglVertex2f(0.0, 480.0);
326 xglVertex2f(640.0,480.0);
327 xglVertex2f(640.0, 0.0);
330 xglRectf(0.0,0.0, 640, 480);
331 xglEnable(GL_DEPTH_TEST);
332 xglEnable(GL_LIGHTING);
333 xglMatrixMode(GL_PROJECTION);
335 xglMatrixMode(GL_MODELVIEW);
340 /**************************************************************************
341 * Update all Visuals (redraws anything graphics related)
342 **************************************************************************/
344 static void fgRenderFrame( void ) {
349 GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
350 GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
352 l = &cur_light_params;
353 t = &cur_time_params;
356 /* update view volume parameters */
357 fgUpdateViewParams();
359 xglClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
361 /* Tell GL we are switching to model view parameters */
362 xglMatrixMode(GL_MODELVIEW);
363 /* xglLoadIdentity(); */
366 xglDisable( GL_DEPTH_TEST );
367 xglDisable( GL_LIGHTING );
368 xglDisable( GL_CULL_FACE );
369 xglDisable( GL_FOG );
370 xglShadeModel( GL_SMOOTH );
373 /* setup transformation for drawing astronomical objects */
375 /* Translate to view position */
376 xglTranslatef( v->view_pos.x, v->view_pos.y, v->view_pos.z );
377 /* Rotate based on gst (sidereal time) */
378 angle = t->gst * 15.041085; /* should be 15.041085, Curt thought it was 15*/
379 /* printf("Rotating astro objects by %.2f degrees\n",angle); */
380 xglRotatef( angle, 0.0, 0.0, -1.0 );
382 /* draw stars and planets */
389 /* render the moon */
390 xglEnable( GL_LIGHTING );
391 /* set lighting parameters */
392 xglLightfv(GL_LIGHT0, GL_AMBIENT, white );
393 xglLightfv(GL_LIGHT0, GL_DIFFUSE, white );
394 xglEnable( GL_CULL_FACE );
396 /* Let's try some blending technique's (Durk)*/
398 glBlendFunc(GL_ONE, GL_ONE);
405 xglShadeModel( /* GL_FLAT */ GL_SMOOTH );
406 xglEnable( GL_DEPTH_TEST );
408 xglFogfv (GL_FOG_COLOR, l->fog_color);
409 /* set lighting parameters */
410 xglLightfv(GL_LIGHT0, GL_AMBIENT, l->scene_ambient );
411 xglLightfv(GL_LIGHT0, GL_DIFFUSE, l->scene_diffuse );
412 /* texture parameters */
413 xglEnable( GL_TEXTURE_2D ); /* xglDisable( GL_TEXTURE_2D ); */
414 xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ) ;
415 xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ) ;
416 xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ) ;
417 xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
418 GL_LINEAR /* GL_LINEAR_MIPMAP_LINEAR */ ) ;
419 xglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
420 xglHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
421 /* set base color (I don't think this is doing anything here) */
426 xglDisable( GL_TEXTURE_2D );
433 /* display instruments */
434 if (displayInstruments) {
435 fgUpdateInstrViewParams();
442 /**************************************************************************
443 * Update internal time dependent calculations (i.e. flight model)
444 **************************************************************************/
446 void fgUpdateTimeDepCalcs(int multi_loop) {
452 f = current_aircraft.flight;
453 t = &cur_time_params;
456 /* update the flight model */
457 if ( multi_loop < 0 ) {
458 multi_loop = DEFAULT_MULTILOOP;
461 /* printf("updating flight model x %d\n", multi_loop); */
462 fgFlightModelUpdate(FG_LARCSIM, f, multi_loop);
464 /* update the view angle */
465 for ( i = 0; i < multi_loop; i++ ) {
466 if ( fabs(v->goal_view_offset - v->view_offset) < 0.05 ) {
467 v->view_offset = v->goal_view_offset;
470 /* move v->view_offset towards v->goal_view_offset */
471 if ( v->goal_view_offset > v->view_offset ) {
472 if ( v->goal_view_offset - v->view_offset < FG_PI ) {
473 v->view_offset += 0.01;
475 v->view_offset -= 0.01;
478 if ( v->view_offset - v->goal_view_offset < FG_PI ) {
479 v->view_offset -= 0.01;
481 v->view_offset += 0.01;
484 if ( v->view_offset > FG_2PI ) {
485 v->view_offset -= FG_2PI;
486 } else if ( v->view_offset < 0 ) {
487 v->view_offset += FG_2PI;
494 void fgInitTimeDepCalcs( void ) {
495 /* initialize timer */
497 #ifdef HAVE_SETITIMER
498 fgTimerInit( 1.0 / DEFAULT_TIMER_HZ, fgUpdateTimeDepCalcs );
499 #endif HAVE_SETITIMER
504 /**************************************************************************
505 * Scenery management routines
506 **************************************************************************/
508 /* static void fgSceneryInit_OLD() { */
510 /* scenery = fgSceneryCompile_OLD();
511 runway = fgRunwayHack_OLD(0.69, 53.07);
515 /* create the scenery */
516 /* GLint fgSceneryCompile_OLD() {
519 scenery = mesh2GL(mesh_ptr_OLD);
525 /* hack in a runway */
526 /* GLint fgRunwayHack_OLD(double width, double length) {
527 static GLfloat concrete[4] = { 0.5, 0.5, 0.5, 1.0 };
528 static GLfloat line[4] = { 0.9, 0.9, 0.9, 1.0 };
531 float line_len, line_width_2, cur_pos;
533 runway = xglGenLists(1);
534 xglNewList(runway, GL_COMPILE);
537 /* xglBegin(GL_POLYGON);
538 xglMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, concrete );
539 xglNormal3f(0.0, 0.0, 1.0);
541 xglVertex3d( 0.0, -width/2.0, 0.0);
542 xglVertex3d( 0.0, width/2.0, 0.0);
543 xglVertex3d(length, width/2.0, 0.0);
544 xglVertex3d(length, -width/2.0, 0.0);
547 /* draw center line */
548 /* xglMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, line );
549 line_len = length / ( 2 * num_lines + 1);
550 printf("line_len = %.3f\n", line_len);
553 for ( i = 0; i < num_lines; i++ ) {
554 xglBegin(GL_POLYGON);
555 xglVertex3d( cur_pos, -line_width_2, 0.005);
556 xglVertex3d( cur_pos, line_width_2, 0.005);
558 xglVertex3d( cur_pos, line_width_2, 0.005);
559 xglVertex3d( cur_pos, -line_width_2, 0.005);
570 /* draw the scenery */
571 /*static void fgSceneryDraw_OLD() {
572 static float z = 32.35;
576 xglCallList(scenery);
578 printf("*** Drawing runway at %.2f\n", z);
580 xglTranslatef( -398391.28, 120070.41, 32.35);
581 xglRotatef(170.0, 0.0, 0.0, 1.0);
589 /* What should we do when we have nothing else to do? How about get
590 * ready for the next move and update the display? */
591 static void fgMainLoop( void ) {
592 static int remainder = 0;
593 int elapsed, multi_loop;
595 /* double joy_x, joy_y; */
596 /* int joy_b1, joy_b2; */
601 fgPrintf( FG_ALL, FG_DEBUG, "Running Main Loop\n");
602 fgPrintf( FG_ALL, FG_DEBUG, "======= ==== ====\n");
604 a = ¤t_aircraft;
606 t = &cur_time_params;
612 /* fgJoystickRead( &joy_x, &joy_y, &joy_b1, &joy_b2 );
613 printf( "Joystick X %f Y %f B1 %d B2 %d\n",
614 joy_x, joy_y, joy_b1, joy_b2 );
616 fgAileronSet( joy_x ); */
618 /* Calculate model iterations needed */
619 elapsed = fgGetTimeInterval();
620 fgPrintf( FG_ALL, FG_BULK,
621 "Time interval is = %d, previous remainder is = %d\n",
623 fgPrintf( FG_ALL, FG_BULK,
624 "--> Frame rate is = %.2f\n", 1000.0 / (float)elapsed);
625 elapsed += remainder;
627 multi_loop = (int)(((float)elapsed * 0.001) * DEFAULT_MODEL_HZ);
628 remainder = elapsed - ((multi_loop*1000) / DEFAULT_MODEL_HZ);
629 fgPrintf( FG_ALL, FG_BULK,
630 "Model iterations needed = %d, new remainder = %d\n",
631 multi_loop, remainder);
633 //Insertion by Jeff Goeke-Smith for Autopilot.
634 // Where should this really go?
635 // Maybe this should run in tandem with the Flight model.
637 /* run Autopilot system */
638 fgPrintf( FG_ALL, FG_BULK,"Attempting autopilot run\n");
645 /* Run flight model */
646 if ( ! use_signals ) {
648 fgUpdateTimeDepCalcs(multi_loop);
651 /* I'm just sticking this here for now, it should probably move
653 /* cur_elev = mesh_altitude(FG_Longitude * RAD_TO_ARCSEC,
654 FG_Latitude * RAD_TO_ARCSEC); */
655 /* there is no ground collision detection really, so for now I
656 * just hard code the ground elevation to be 0 */
659 /* printf("Ground elevation is %.2f meters here.\n", cur_elev); */
660 /* FG_Runway_altitude = cur_elev * METER_TO_FEET; */
662 if ( FG_Altitude * FEET_TO_METER < cur_elev + 3.758099) {
663 /* set this here, otherwise if we set runway height above our
664 current height we get a really nasty bounce. */
665 FG_Runway_altitude = FG_Altitude - 3.758099;
667 /* now set aircraft altitude above ground */
668 FG_Altitude = cur_elev * METER_TO_FEET + 3.758099;
669 fgPrintf( FG_ALL, FG_BULK, "<*> resetting altitude to %.0f meters\n",
670 FG_Altitude * FEET_TO_METER);
673 fgAircraftOutputCurrent(a);
675 /* see if we need to load any new scenery tiles */
678 /* Process/manage pending events */
684 fgPrintf( FG_ALL, FG_DEBUG, "\n");
688 /**************************************************************************
689 * Handle new window size or exposure
690 **************************************************************************/
692 static void fgReshape( int width, int height ) {
693 /* Do this so we can call fgReshape(0,0) ourselves without having to know
694 * what the values of width & height are. */
695 if ( (height > 0) && (width > 0) ) {
696 win_ratio = (GLfloat) height / (GLfloat) width;
702 /* Inform gl of our view window size (now handled elsewhere) */
703 /* xglViewport(0, 0, (GLint)width, (GLint)height); */
705 fgUpdateViewParams();
707 /* xglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); */
711 /**************************************************************************
713 **************************************************************************/
715 int main( int argc, char *argv[] ) {
717 int parse_result; // Used in command line argument.
719 f = current_aircraft.flight;
720 // First things first... We must have startup options dealt with.
722 printf("Flight Gear: Version %s\n\n", VERSION);
724 /*********************************************************************
725 * Initialize the Window/Graphics environment.
726 **********************************************************************/
728 /* initialize GLUT */
729 xglutInit(&argc, argv);
731 /* Define Display Parameters */
732 xglutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
734 /* Define initial window size */
735 xglutInitWindowSize(640, 480);
737 /* Initialize windows */
738 xglutCreateWindow("Flight Gear");
740 // xglutInit above will extract all non-general program command line.
741 // We only need wory about our own.
743 parse_result = getargs( argc, argv, OptsDefined, CmdLineOptions, NULL);
745 switch( parse_result ) {
750 print_desc( OptsDefined, CmdLineOptions );
755 printf( "Flight Gear: Command line invalid.");
759 // Deal with the effects of options no set by manipulating the command
760 // line, or possibly set to invalid states.
762 if(( viewArg >= 0) && (viewArg <= 1)) {
763 show_hud = viewArg; // For now view_mode TRUE - no HUD, else show_hud.
765 show_hud = DefaultViewMode;
768 // All other command line option responses are handled in the various
769 // initialization routines (or ignored if not implemented.
771 // This is the general house keeping init routine. It initializes the
772 // debug trail scheme and then any other stuff.
774 if( !fgInitGeneral()) {
776 // This is the top level init routine which calls all the other
777 // subsystem initialization routines. If you are adding a
778 // subsystem to flight gear, its initialization call should
779 // located in this routine.
780 if( !fgInitSubsystems()) {
782 // setup view parameters, only makes GL calls
786 /* init timer routines, signals, etc. Arrange for an alarm
787 signal to be generated, etc. */
788 fgInitTimeDepCalcs();
791 /**********************************************************
792 * Initialize the GLUT Event Handlers.
793 **********************************************************/
795 // call fgReshape() on window resizes
796 xglutReshapeFunc( fgReshape );
798 // call key() on keyboard event
799 xglutKeyboardFunc( GLUTkey );
800 glutSpecialFunc( GLUTspecialkey );
802 // call fgMainLoop() whenever there is
803 // nothing else to do
804 xglutIdleFunc( fgMainLoop );
807 xglutDisplayFunc( fgRenderFrame );
809 // pass control off to the GLUT event handler
812 } // End if subsystems initialize ok
813 } // End if general initializations went ok
815 if( fg_DebugOutput ) {
816 fclose( fg_DebugOutput );
824 void __eprintf( void ) {
830 /* Revision 1.71 1998/04/18 04:11:26 curt
831 /* Moved fg_debug to it's own library, added zlib support.
833 * Revision 1.70 1998/04/14 02:21:02 curt
834 * Incorporated autopilot heading hold contributed by: Jeff Goeke-Smith
835 * <jgoeke@voyager.net>
837 * Revision 1.69 1998/04/08 23:35:34 curt
838 * Tweaks to Gnu automake/autoconf system.
840 * Revision 1.68 1998/04/03 22:09:03 curt
841 * Converting to Gnu autoconf system.
843 * Revision 1.67 1998/03/23 21:24:37 curt
844 * Source code formating tweaks.
846 * Revision 1.66 1998/03/14 00:31:20 curt
847 * Beginning initial terrain texturing experiments.
849 * Revision 1.65 1998/03/09 22:45:57 curt
850 * Minor tweaks for building on sparc platform.
852 * Revision 1.64 1998/02/20 00:16:23 curt
855 * Revision 1.63 1998/02/16 16:17:39 curt
858 * Revision 1.62 1998/02/16 13:39:42 curt
859 * Miscellaneous weekend tweaks. Fixed? a cache problem that caused whole
860 * tiles to occasionally be missing.
862 * Revision 1.61 1998/02/12 21:59:46 curt
863 * Incorporated code changes contributed by Charlie Hotchkiss
864 * <chotchkiss@namg.us.anritsu.com>
866 * Revision 1.60 1998/02/11 02:50:40 curt
869 * Revision 1.59 1998/02/09 22:56:54 curt
870 * Removed "depend" files from cvs control. Other minor make tweaks.
872 * Revision 1.58 1998/02/09 15:07:49 curt
875 * Revision 1.57 1998/02/07 15:29:40 curt
876 * Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
877 * <chotchkiss@namg.us.anritsu.com>
879 * Revision 1.56 1998/02/03 23:20:23 curt
880 * Lots of little tweaks to fix various consistency problems discovered by
881 * Solaris' CC. Fixed a bug in fg_debug.c with how the fgPrintf() wrapper
882 * passed arguments along to the real printf(). Also incorporated HUD changes
883 * by Michele America.
885 * Revision 1.55 1998/02/02 20:53:58 curt
886 * Incorporated Durk's changes.
888 * Revision 1.54 1998/01/31 00:43:10 curt
889 * Added MetroWorks patches from Carmen Volpe.
891 * Revision 1.53 1998/01/27 18:35:54 curt
894 * Revision 1.52 1998/01/27 00:47:56 curt
895 * Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
896 * system and commandline/config file processing code.
898 * Revision 1.51 1998/01/26 15:57:05 curt
899 * Tweaks for dynamic scenery development.
901 * Revision 1.50 1998/01/19 19:27:07 curt
902 * Merged in make system changes from Bob Kuehne <rpk@sgi.com>
903 * This should simplify things tremendously.
905 * Revision 1.49 1998/01/19 18:40:31 curt
906 * Tons of little changes to clean up the code and to remove fatal errors
907 * when building with the c++ compiler.
909 * Revision 1.48 1998/01/19 18:35:46 curt
910 * Minor tweaks and fixes for cygwin32.
912 * Revision 1.47 1998/01/13 00:23:08 curt
913 * Initial changes to support loading and management of scenery tiles. Note,
914 * there's still a fair amount of work left to be done.
916 * Revision 1.46 1998/01/08 02:22:06 curt
917 * Beginning to integrate Tile management subsystem.
919 * Revision 1.45 1998/01/07 03:18:55 curt
920 * Moved astronomical stuff from .../Src/Scenery to .../Src/Astro/
922 * Revision 1.44 1997/12/30 22:22:31 curt
923 * Further integration of event manager.
925 * Revision 1.43 1997/12/30 20:47:43 curt
926 * Integrated new event manager with subsystem initializations.
928 * Revision 1.42 1997/12/30 16:36:47 curt
929 * Merged in Durk's changes ...
931 * Revision 1.41 1997/12/30 13:06:56 curt
932 * A couple lighting tweaks ...
934 * Revision 1.40 1997/12/30 01:38:37 curt
935 * Switched back to per vertex normals and smooth shading for terrain.
937 * Revision 1.39 1997/12/22 23:45:45 curt
938 * First stab at sunset/sunrise sky glow effects.
940 * Revision 1.38 1997/12/22 04:14:28 curt
941 * Aligned sky with sun so dusk/dawn effects can be correct relative to the sun.
943 * Revision 1.37 1997/12/19 23:34:03 curt
944 * Lot's of tweaking with sky rendering and lighting.
946 * Revision 1.36 1997/12/19 16:44:57 curt
947 * Working on scene rendering order and options.
949 * Revision 1.35 1997/12/18 23:32:32 curt
950 * First stab at sky dome actually starting to look reasonable. :-)
952 * Revision 1.34 1997/12/17 23:13:34 curt
953 * Began working on rendering a sky.
955 * Revision 1.33 1997/12/15 23:54:45 curt
956 * Add xgl wrappers for debugging.
957 * Generate terrain normals on the fly.
959 * Revision 1.32 1997/12/15 20:59:08 curt
962 * Revision 1.31 1997/12/12 21:41:25 curt
963 * More light/material property tweaking ... still a ways off.
965 * Revision 1.30 1997/12/12 19:52:47 curt
966 * Working on lightling and material properties.
968 * Revision 1.29 1997/12/11 04:43:54 curt
969 * Fixed sun vector and lighting problems. I thing the moon is now lit
972 * Revision 1.28 1997/12/10 22:37:45 curt
973 * Prepended "fg" on the name of all global structures that didn't have it yet.
974 * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
976 * Revision 1.27 1997/12/09 05:11:54 curt
977 * Working on tweaking lighting.
979 * Revision 1.26 1997/12/09 04:25:29 curt
980 * Working on adding a global lighting params structure.
982 * Revision 1.25 1997/12/08 22:54:09 curt
983 * Enabled GL_CULL_FACE.
985 * Revision 1.24 1997/11/25 19:25:32 curt
986 * Changes to integrate Durk's moon/sun code updates + clean up.
988 * Revision 1.23 1997/11/15 18:16:34 curt
991 * Revision 1.22 1997/10/30 12:38:41 curt
992 * Working on new scenery subsystem.
994 * Revision 1.21 1997/09/23 00:29:38 curt
995 * Tweaks to get things to compile with gcc-win32.
997 * Revision 1.20 1997/09/22 14:44:19 curt
998 * Continuing to try to align stars correctly.
1000 * Revision 1.19 1997/09/18 16:20:08 curt
1001 * At dusk/dawn add/remove stars in stages.
1003 * Revision 1.18 1997/09/16 22:14:51 curt
1004 * Tweaked time of day lighting equations. Don't draw stars during the day.
1006 * Revision 1.17 1997/09/16 15:50:29 curt
1007 * Working on star alignment and time issues.
1009 * Revision 1.16 1997/09/13 02:00:06 curt
1010 * Mostly working on stars and generating sidereal time for accurate star
1013 * Revision 1.15 1997/09/05 14:17:27 curt
1014 * More tweaking with stars.
1016 * Revision 1.14 1997/09/05 01:35:53 curt
1017 * Working on getting stars right.
1019 * Revision 1.13 1997/09/04 02:17:34 curt
1022 * Revision 1.12 1997/08/27 21:32:24 curt
1023 * Restructured view calculation code. Added stars.
1025 * Revision 1.11 1997/08/27 03:30:16 curt
1026 * Changed naming scheme of basic shared structures.
1028 * Revision 1.10 1997/08/25 20:27:22 curt
1029 * Merged in initial HUD and Joystick code.
1031 * Revision 1.9 1997/08/22 21:34:39 curt
1032 * Doing a bit of reorganizing and house cleaning.
1034 * Revision 1.8 1997/08/19 23:55:03 curt
1035 * Worked on better simulating real lighting.
1037 * Revision 1.7 1997/08/16 12:22:38 curt
1038 * Working on improving the lighting/shading.
1040 * Revision 1.6 1997/08/13 20:24:56 curt
1041 * Changes due to changing sunpos interface.
1043 * Revision 1.5 1997/08/06 21:08:32 curt
1044 * Sun position now *really* works (I think) ... I still have sun time warping
1045 * code in place, probably should remove it soon.
1047 * Revision 1.4 1997/08/06 15:41:26 curt
1048 * Working on correct sun position.
1050 * Revision 1.3 1997/08/06 00:24:22 curt
1051 * Working on correct real time sun lighting.
1053 * Revision 1.2 1997/08/04 20:25:15 curt
1054 * Organizational tweaking.
1056 * Revision 1.1 1997/08/02 18:45:00 curt
1057 * Renamed GLmain.c GLUTmain.c
1059 * Revision 1.43 1997/08/02 16:23:47 curt
1062 * Revision 1.42 1997/08/01 19:43:33 curt
1063 * Making progress with coordinate system overhaul.
1065 * Revision 1.41 1997/07/31 22:52:37 curt
1066 * Working on redoing internal coordinate systems & scenery transformations.
1068 * Revision 1.40 1997/07/30 16:12:42 curt
1069 * Moved fg_random routines from Util/ to Math/
1071 * Revision 1.39 1997/07/21 14:45:01 curt
1074 * Revision 1.38 1997/07/19 23:04:47 curt
1075 * Added an initial weather section.
1077 * Revision 1.37 1997/07/19 22:34:02 curt
1078 * Moved PI definitions to ../constants.h
1079 * Moved random() stuff to ../Utils/ and renamed fg_random()
1081 * Revision 1.36 1997/07/18 23:41:25 curt
1082 * Tweaks for building with Cygnus Win32 compiler.
1084 * Revision 1.35 1997/07/18 14:28:34 curt
1085 * Hacked in some support for wind/turbulence.
1087 * Revision 1.34 1997/07/16 20:04:48 curt
1088 * Minor tweaks to aid Win32 port.
1090 * Revision 1.33 1997/07/12 03:50:20 curt
1091 * Added an #include <Windows32/Base.h> to help compiling for Win32
1093 * Revision 1.32 1997/07/11 03:23:18 curt
1094 * Solved some scenery display/orientation problems. Still have a positioning
1095 * (or transformation?) problem.
1097 * Revision 1.31 1997/07/11 01:29:58 curt
1098 * More tweaking of terrian floor.
1100 * Revision 1.30 1997/07/10 04:26:37 curt
1101 * We now can interpolated ground elevation for any position in the grid. We
1102 * can use this to enforce a "hard" ground. We still need to enforce some
1103 * bounds checking so that we don't try to lookup data points outside the
1106 * Revision 1.29 1997/07/09 21:31:12 curt
1107 * Working on making the ground "hard."
1109 * Revision 1.28 1997/07/08 18:20:12 curt
1110 * Working on establishing a hard ground.
1112 * Revision 1.27 1997/07/07 20:59:49 curt
1113 * Working on scenery transformations to enable us to fly fluidly over the
1114 * poles with no discontinuity/distortion in scenery.
1116 * Revision 1.26 1997/07/05 20:43:34 curt
1117 * renamed mat3 directory to Math so we could add other math related routines.
1119 * Revision 1.25 1997/06/29 21:19:17 curt
1120 * Working on scenery management system.
1122 * Revision 1.24 1997/06/26 22:14:53 curt
1123 * Beginning work on a scenery management system.
1125 * Revision 1.23 1997/06/26 19:08:33 curt
1126 * Restructuring make, adding automatic "make dep" support.
1128 * Revision 1.22 1997/06/25 15:39:47 curt
1129 * Minor changes to compile with rsxnt/win32.
1131 * Revision 1.21 1997/06/22 21:44:41 curt
1132 * Working on intergrating the VRML (subset) parser.
1134 * Revision 1.20 1997/06/21 17:12:53 curt
1135 * Capitalized subdirectory names.
1137 * Revision 1.19 1997/06/18 04:10:31 curt
1138 * A couple more runway tweaks ...
1140 * Revision 1.18 1997/06/18 02:21:24 curt
1141 * Hacked in a runway
1143 * Revision 1.17 1997/06/17 16:51:58 curt
1144 * Timer interval stuff now uses gettimeofday() instead of ftime()
1146 * Revision 1.16 1997/06/17 04:19:16 curt
1147 * More timer related tweaks with respect to view direction changes.
1149 * Revision 1.15 1997/06/17 03:41:10 curt
1150 * Nonsignal based interval timing is now working.
1151 * This would be a good time to look at cleaning up the code structure a bit.
1153 * Revision 1.14 1997/06/16 19:32:51 curt
1154 * Starting to add general timer support.
1156 * Revision 1.13 1997/06/02 03:40:06 curt
1157 * A tiny bit more view tweaking.
1159 * Revision 1.12 1997/06/02 03:01:38 curt
1160 * Working on views (side, front, back, transitions, etc.)
1162 * Revision 1.11 1997/05/31 19:16:25 curt
1163 * Elevator trim added.
1165 * Revision 1.10 1997/05/31 04:13:52 curt
1168 * Continuing work on the LaRCsim flight model integration.
1169 * Added some MSFS-like keyboard input handling.
1171 * Revision 1.9 1997/05/30 19:27:01 curt
1172 * The LaRCsim flight model is starting to look like it is working.
1174 * Revision 1.8 1997/05/30 03:54:10 curt
1175 * Made a bit more progress towards integrating the LaRCsim flight model.
1177 * Revision 1.7 1997/05/29 22:39:49 curt
1178 * Working on incorporating the LaRCsim flight model.
1180 * Revision 1.6 1997/05/29 12:31:39 curt
1181 * Minor tweaks, moving towards general flight model integration.
1183 * Revision 1.5 1997/05/29 02:33:23 curt
1184 * Updated to reflect changing interfaces in other "modules."
1186 * Revision 1.4 1997/05/27 17:44:31 curt
1187 * Renamed & rearranged variables and routines. Added some initial simple
1188 * timer/alarm routines so the flight model can be updated on a regular
1191 * Revision 1.3 1997/05/23 15:40:25 curt
1192 * Added GNU copyright headers.
1195 * Revision 1.2 1997/05/23 00:35:12 curt
1196 * Trying to get fog to work ...
1198 * Revision 1.1 1997/05/21 15:57:51 curt
1199 * Renamed due to added GLUT support.
1201 * Revision 1.3 1997/05/19 18:22:42 curt
1202 * Parameter tweaking ... starting to stub in fog support.
1204 * Revision 1.2 1997/05/17 00:17:34 curt
1205 * Trying to stub in support for standard OpenGL.
1207 * Revision 1.1 1997/05/16 16:05:52 curt