1 // main.cxx -- top level sim routines
3 // Written by Curtis Olson, started May 1997.
5 // Copyright (C) 1997 - 2002 Curtis L. Olson - curt@flightgear.org
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.
28 #if defined(__linux__) && defined(__i386__)
29 # include <fpu_control.h>
33 #include <simgear/compiler.h>
36 #ifndef SG_HAVE_NATIVE_SGI_COMPILERS
41 #include <simgear/misc/exception.hxx>
42 #include <simgear/ephemeris/ephemeris.hxx>
43 #include <simgear/route/route.hxx>
45 #ifdef SG_MATH_EXCEPTION_CLASH
58 #include <string.h> // for strcmp()
65 #ifdef HAVE_SYS_STAT_H
66 # include <sys/stat.h> // for stat()
70 # include <unistd.h> // for stat()
73 #include <plib/netChat.h>
78 #include <simgear/constants.h> // for VERSION
79 #include <simgear/debug/logstream.hxx>
80 #include <simgear/math/polar3d.hxx>
81 #include <simgear/math/sg_random.h>
82 #include <simgear/misc/sg_path.hxx>
83 #include <simgear/sky/clouds3d/SkySceneLoader.hpp>
84 #include <simgear/sky/clouds3d/SkyUtil.hpp>
85 #include <simgear/sky/sky.hxx>
86 #include <simgear/timing/sg_time.hxx>
88 #include <Include/general.hxx>
90 #include <Aircraft/aircraft.hxx>
92 #include <ATC/ATCmgr.hxx>
93 #include <ATC/ATCdisplay.hxx>
94 //#include <ATC/AIMgr.hxx>
97 #include <Autopilot/newauto.hxx>
99 #include <Cockpit/cockpit.hxx>
100 #include <Cockpit/radiostack.hxx>
101 #include <Cockpit/steam.hxx>
103 #include <FDM/UIUCModel/uiuc_aircraftdir.h>
105 #include <Model/acmodel.hxx>
106 #include <Model/loader.hxx>
107 #include <Model/model.hxx>
108 #include <Model/modelmgr.hxx>
109 #include <Main/location.hxx>
110 #ifdef FG_NETWORK_OLK
111 #include <NetworkOLK/network.h>
113 #include <Objects/matlib.hxx>
114 #include <Scenery/scenery.hxx>
115 #include <Scenery/tilemgr.hxx>
116 #ifdef ENABLE_AUDIO_SUPPORT
117 # include <Sound/soundmgr.hxx>
118 # include <Sound/fg_fx.hxx>
119 # include <Sound/morse.hxx>
121 #include <Systems/system_mgr.hxx>
122 #include <Instrumentation/instrument_mgr.hxx>
123 #include <Time/FGEventMgr.hxx>
124 #include <Time/fg_timer.hxx>
125 #include <Time/light.hxx>
126 #include <Time/sunpos.hxx>
127 #include <Time/tmp.hxx>
129 #include <Input/input.hxx>
132 #include <simgear/misc/sgstream.hxx>
133 #include <simgear/math/point3d.hxx>
134 #include <FDM/flight.hxx>
135 #include <FDM/ADA.hxx>
136 #include <Scenery/tileentry.hxx>
139 // PFNGLPOINTPARAMETERFEXTPROC glPointParameterfEXT = 0;
140 // PFNGLPOINTPARAMETERFVEXTPROC glPointParameterfvEXT = 0;
142 float default_attenuation[3] = {1.0, 0.0, 0.0};
143 //Required for using GL_extensions
144 void fgLoadDCS (void);
145 void fgUpdateDCS (void);
146 ssgSelector *ship_sel=NULL;
147 // upto 32 instances of a same object can be loaded.
148 ssgTransform *ship_pos[32];
149 double obj_lat[32],obj_lon[32],obj_alt[32],obj_pitch[32],obj_roll[32];
151 ssgSelector *lightpoints_brightness = new ssgSelector;
152 ssgTransform *lightpoints_transform = new ssgTransform;
153 FGTileEntry *dummy_tile;
156 // Clip plane settings...
157 float scene_nearplane = 0.5f;
158 float scene_farplane = 120000.0f;
160 static double delta_time_sec = 0;
164 # include <WeatherCM/FGLocalWeatherDatabase.h>
166 # include <Environment/environment_mgr.hxx>
171 #include "fg_init.hxx"
173 #include "fg_props.hxx"
174 #include "globals.hxx"
175 #include "splash.hxx"
176 #include "viewmgr.hxx"
177 #include "options.hxx"
178 #include "logger.hxx"
181 # include <console.h> // -dw- for command line dialog
185 FGEventMgr global_events;
187 // This is a record containing a bit of global housekeeping information
190 // Specify our current idle function state. This is used to run all
191 // our initializations out of the glutIdleLoop() so that we can get a
192 // splash screen up and running right away.
193 static int idle_state = 0;
194 static long global_multi_loop;
196 // forward declaration
197 void fgReshape( int width, int height );
199 // fog constants. I'm a little nervous about putting actual code out
200 // here but it seems to work (?)
201 static const double m_log01 = -log( 0.01 );
202 static const double sqrt_m_log01 = sqrt( m_log01 );
203 static GLfloat fog_exp_density;
204 static GLfloat fog_exp2_density;
205 static GLfloat fog_exp2_punch_through;
207 #ifdef FG_NETWORK_OLK
208 ssgSelector *fgd_sel = NULL;
209 ssgTransform *fgd_pos = NULL;
214 SkySceneLoader *sgClouds3d;
215 bool _bcloud_orig = true;
218 sgMat4 copy_of_ssgOpenGLAxisSwapMatrix =
220 { 1.0f, 0.0f, 0.0f, 0.0f },
221 { 0.0f, 0.0f, -1.0f, 0.0f },
222 { 0.0f, 1.0f, 0.0f, 0.0f },
223 { 0.0f, 0.0f, 0.0f, 1.0f }
226 // The following defines flightgear options. Because glutlib will also
227 // want to parse its own options, those options must not be included here
228 // or they will get parsed by the main program option parser. Hence case
229 // is significant for any option added that might be in conflict with
232 // glutlib parses for:
234 // -direct (invalid in Win32)
238 // -indirect (invalid in Win32)
241 // Note that glutlib depends upon strings while this program's
242 // option parser wants only initial characters followed by numbers
247 ssgSimpleState *cloud3d_imposter_state;
248 ssgSimpleState *default_state;
249 ssgSimpleState *hud_and_panel;
250 ssgSimpleState *menus;
252 SGTimeStamp last_time_stamp;
253 SGTimeStamp current_time_stamp;
255 void fgBuildRenderStates( void ) {
256 default_state = new ssgSimpleState;
257 default_state->ref();
258 default_state->disable( GL_TEXTURE_2D );
259 default_state->enable( GL_CULL_FACE );
260 default_state->enable( GL_COLOR_MATERIAL );
261 default_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
262 default_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
263 default_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
264 default_state->disable( GL_BLEND );
265 default_state->disable( GL_ALPHA_TEST );
266 default_state->disable( GL_LIGHTING );
268 cloud3d_imposter_state = new ssgSimpleState;
269 cloud3d_imposter_state->ref();
270 cloud3d_imposter_state->enable( GL_TEXTURE_2D );
271 cloud3d_imposter_state->enable( GL_CULL_FACE );
272 cloud3d_imposter_state->enable( GL_COLOR_MATERIAL );
273 cloud3d_imposter_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
274 cloud3d_imposter_state->setMaterial( GL_DIFFUSE, 1, 1, 1, 1 );
275 cloud3d_imposter_state->setMaterial( GL_AMBIENT, 1, 1, 1, 1 );
276 cloud3d_imposter_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
277 cloud3d_imposter_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
278 cloud3d_imposter_state->enable( GL_BLEND );
279 cloud3d_imposter_state->enable( GL_ALPHA_TEST );
280 cloud3d_imposter_state->disable( GL_LIGHTING );
282 hud_and_panel = new ssgSimpleState;
283 hud_and_panel->ref();
284 hud_and_panel->disable( GL_CULL_FACE );
285 hud_and_panel->disable( GL_TEXTURE_2D );
286 hud_and_panel->disable( GL_LIGHTING );
287 hud_and_panel->enable( GL_BLEND );
289 menus = new ssgSimpleState;
291 menus->disable( GL_CULL_FACE );
292 menus->disable( GL_TEXTURE_2D );
293 menus->enable( GL_BLEND );
297 // fgInitVisuals() -- Initialize various GL/view parameters
298 void fgInitVisuals( void ) {
301 l = &cur_light_params;
303 #ifndef GLUT_WRONG_VERSION
304 // Go full screen if requested ...
305 if ( fgGetBool("/sim/startup/fullscreen") ) {
310 // If enabled, normal vectors specified with glNormal are scaled
311 // to unit length after transformation. Enabling this has
312 // performance implications. See the docs for glNormal.
313 // glEnable( GL_NORMALIZE );
315 glEnable( GL_LIGHTING );
316 glEnable( GL_LIGHT0 );
317 // glLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec ); // done later with ssg
320 sgSetVec3( sunpos, l->sun_vec[0], l->sun_vec[1], l->sun_vec[2] );
321 ssgGetLight( 0 ) -> setPosition( sunpos );
323 glFogi (GL_FOG_MODE, GL_EXP2);
324 if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) ||
325 (!fgGetBool("/sim/rendering/shading"))) {
326 // if fastest fog requested, or if flat shading force fastest
327 glHint ( GL_FOG_HINT, GL_FASTEST );
328 } else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) {
329 glHint ( GL_FOG_HINT, GL_NICEST );
331 if ( fgGetBool("/sim/rendering/wireframe") ) {
333 glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
336 // This is the default anyways, but it can't hurt
337 glFrontFace ( GL_CCW );
340 // glEnable(GL_POINT_SMOOTH);
341 // glEnable(GL_LINE_SMOOTH);
342 // glEnable(GL_POLYGON_SMOOTH);
346 // For HiRes screen Dumps using Brian Pauls TR Library
347 void trRenderFrame( void ) {
349 if ( fgPanelVisible() ) {
350 GLfloat height = fgGetInt("/sim/startup/ysize");
352 (current_panel->getViewHeight() - current_panel->getYOffset())
353 * (height / 768.0) + 1;
354 glTranslatef( 0.0, view_h, 0.0 );
357 static GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
358 static GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
360 fgLIGHT *l = &cur_light_params;
362 glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
363 l->adj_fog_color[2], l->adj_fog_color[3]);
365 glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
367 // set the opengl state to known default values
368 default_state->force();
371 glFogf ( GL_FOG_DENSITY, fog_exp2_density);
372 glFogi ( GL_FOG_MODE, GL_EXP2 );
373 glFogfv ( GL_FOG_COLOR, l->adj_fog_color );
375 // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
376 // we only update GL_AMBIENT for our lights we will never get
377 // a completely dark scene. So, we set GL_LIGHT_MODEL_AMBIENT
378 // explicitely to black.
379 glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
380 glLightModeli( GL_LIGHT_MODEL_LOCAL_VIEWER, GL_FALSE );
382 ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
384 // texture parameters
385 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
386 glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
388 // we need a white diffuse light for the phase of the moon
389 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
392 // draw the ssg scene
393 // return to the desired diffuse color
394 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
395 glEnable( GL_DEPTH_TEST );
396 ssgSetNearFar( scene_nearplane, scene_farplane );
397 ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
400 glFogf (GL_FOG_DENSITY, fog_exp2_punch_through);
401 ssgSetNearFar( scene_nearplane, scene_farplane );
402 ssgCullAndDraw( globals->get_scenery()->get_lighting() );
404 if (fgGetBool("/environment/clouds/status"))
405 thesky->postDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER );
407 globals->get_model_mgr()->draw();
408 globals->get_aircraft_model()->draw();
412 // Update all Visuals (redraws anything graphics related)
413 void fgRenderFrame() {
415 GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
416 GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
418 // Process/manage pending events
419 global_events.update( delta_time_sec );
421 static const SGPropertyNode *longitude
422 = fgGetNode("/position/longitude-deg");
423 static const SGPropertyNode *latitude
424 = fgGetNode("/position/latitude-deg");
425 static const SGPropertyNode *altitude
426 = fgGetNode("/position/altitude-ft");
427 static const SGPropertyNode *groundlevel_nearplane
428 = fgGetNode("/sim/current-view/ground-level-nearplane-m");
430 // Update the default (kludged) properties.
433 FGViewer *current__view = globals->get_current_view();
435 fgLIGHT *l = &cur_light_params;
436 static double last_visibility = -9999;
439 double actual_visibility = thesky->get_visibility();
440 if ( actual_visibility != last_visibility ) {
441 last_visibility = actual_visibility;
443 fog_exp_density = m_log01 / actual_visibility;
444 fog_exp2_density = sqrt_m_log01 / actual_visibility;
445 fog_exp2_punch_through = sqrt_m_log01 / ( actual_visibility * 2.5 );
449 // GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
450 // GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
451 // GLfloat terrain_color[4] = { 0.54, 0.44, 0.29, 1.0 };
452 // GLfloat mat_shininess[] = { 10.0 };
453 GLbitfield clear_mask;
455 if ( idle_state != 1000 ) {
456 // still initializing, draw the splash screen
457 if ( fgGetBool("/sim/startup/splash-screen") ) {
460 // Keep resetting sim time while the sim is initializing
461 globals->set_sim_time_sec( 0.0 );
463 // idle_state is now 1000 meaning we've finished all our
464 // initializations and are running the main loop, so this will
465 // now work without seg faulting the system.
467 // calculate our current position in cartesian space
468 globals->get_scenery()->set_center( globals->get_scenery()->get_next_center() );
471 fgReshape( fgGetInt("/sim/startup/xsize"),
472 fgGetInt("/sim/startup/ysize") );
474 if ( fgGetBool("/sim/rendering/clouds3d") ) {
475 glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
476 cloud3d_imposter_state->force();
478 glColor4f( 1.0, 1.0, 1.0, 1.0 );
479 glEnable(GL_DEPTH_TEST);
481 glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
482 if ( _bcloud_orig ) {
483 Point3D c = globals->get_scenery()->get_center();
484 sgClouds3d->Set_Cloud_Orig( &c );
485 _bcloud_orig = false;
487 sgClouds3d->Update( current__view->get_absolute_view_pos() );
488 glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
489 glDisable(GL_DEPTH_TEST);
492 clear_mask = GL_DEPTH_BUFFER_BIT;
493 if ( fgGetBool("/sim/rendering/wireframe") ) {
494 clear_mask |= GL_COLOR_BUFFER_BIT;
497 if ( fgGetBool("/sim/rendering/skyblend") ) {
498 if ( fgGetBool("/sim/rendering/textures") ) {
499 // glClearColor(black[0], black[1], black[2], black[3]);
500 glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
501 l->adj_fog_color[2], l->adj_fog_color[3]);
502 clear_mask |= GL_COLOR_BUFFER_BIT;
505 glClearColor(l->sky_color[0], l->sky_color[1],
506 l->sky_color[2], l->sky_color[3]);
507 clear_mask |= GL_COLOR_BUFFER_BIT;
509 glClear( clear_mask );
511 // Tell GL we are switching to model view parameters
513 // I really should create a derived ssg node or use a call
514 // back or something so that I can draw the sky within the
515 // ssgCullAndDraw() function, but for now I just mimic what
516 // ssg does to set up the model view matrix
517 glMatrixMode(GL_MODELVIEW);
519 ssgSetCamera( (sgVec4 *)current__view->get_VIEW() );
521 // set the opengl state to known default values
522 default_state->force();
524 // update fog params if visibility has changed
525 double visibility_meters = fgGetDouble("/environment/visibility-m");
526 thesky->set_visibility(visibility_meters);
528 thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
529 ( global_multi_loop * fgGetInt("/sim/speed-up") )
530 / (double)fgGetInt("/sim/model-hz") );
532 // Set correct opengl fog density
533 glFogf (GL_FOG_DENSITY, fog_exp2_density);
535 // update the sky dome
536 if ( fgGetBool("/sim/rendering/skyblend") ) {
537 /* cout << "thesky->repaint() sky_color = "
538 << cur_light_params.sky_color[0] << " "
539 << cur_light_params.sky_color[1] << " "
540 << cur_light_params.sky_color[2] << " "
541 << cur_light_params.sky_color[3] << endl;
543 << cur_light_params.fog_color[0] << " "
544 << cur_light_params.fog_color[1] << " "
545 << cur_light_params.fog_color[2] << " "
546 << cur_light_params.fog_color[3] << endl;
547 cout << " sun_angle = " << cur_light_params.sun_angle
548 << " moon_angle = " << cur_light_params.moon_angle
550 thesky->repaint( cur_light_params.sky_color,
551 cur_light_params.adj_fog_color,
552 cur_light_params.sun_angle,
553 cur_light_params.moon_angle,
554 globals->get_ephem()->getNumPlanets(),
555 globals->get_ephem()->getPlanets(),
556 globals->get_ephem()->getNumStars(),
557 globals->get_ephem()->getStars() );
559 /* cout << "thesky->reposition( view_pos = " << view_pos[0] << " "
560 << view_pos[1] << " " << view_pos[2] << endl;
561 cout << " zero_elev = " << zero_elev[0] << " "
562 << zero_elev[1] << " " << zero_elev[2]
563 << " lon = " << cur_fdm_state->get_Longitude()
564 << " lat = " << cur_fdm_state->get_Latitude() << endl;
565 cout << " sun_rot = " << cur_light_params.sun_rotation
566 << " gst = " << SGTime::cur_time_params->getGst() << endl;
567 cout << " sun ra = " << globals->get_ephem()->getSunRightAscension()
568 << " sun dec = " << globals->get_ephem()->getSunDeclination()
569 << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
570 << " moon dec = " << globals->get_ephem()->getMoonDeclination() << endl; */
572 thesky->reposition( current__view->get_view_pos(),
573 current__view->get_zero_elev(),
574 current__view->get_world_up(),
575 current__view->getLongitude_deg()
576 * SGD_DEGREES_TO_RADIANS,
577 current__view->getLatitude_deg()
578 * SGD_DEGREES_TO_RADIANS,
579 current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
580 cur_light_params.sun_rotation,
581 globals->get_time_params()->getGst(),
582 globals->get_ephem()->getSunRightAscension(),
583 globals->get_ephem()->getSunDeclination(),
585 globals->get_ephem()->getMoonRightAscension(),
586 globals->get_ephem()->getMoonDeclination(),
590 glEnable( GL_DEPTH_TEST );
591 if ( strcmp(fgGetString("/sim/rendering/fog"), "disabled") ) {
593 glFogi( GL_FOG_MODE, GL_EXP2 );
594 glFogfv( GL_FOG_COLOR, l->adj_fog_color );
597 // set sun/lighting parameters
598 ssgGetLight( 0 ) -> setPosition( l->sun_vec );
600 // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
601 // we only update GL_AMBIENT for our lights we will never get
602 // a completely dark scene. So, we set GL_LIGHT_MODEL_AMBIENT
603 // explicitely to black.
604 glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
606 ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
607 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
608 ssgGetLight( 0 ) -> setColour( GL_SPECULAR, l->scene_specular );
610 // texture parameters
611 // glEnable( GL_TEXTURE_2D );
612 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
613 glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
615 // glMatrixMode( GL_PROJECTION );
617 ssgSetFOV( current__view->get_h_fov(),
618 current__view->get_v_fov() );
621 current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER
622 - globals->get_scenery()->get_cur_elev();
625 scene_nearplane = 10.0f;
626 scene_farplane = 120000.0f;
628 scene_nearplane = groundlevel_nearplane->getDoubleValue();
629 scene_farplane = 120000.0f;
632 ssgSetNearFar( scene_nearplane, scene_farplane );
634 // $$$ begin - added VS Renganthan 17 Oct 2K
637 // $$$ end - added VS Renganthan 17 Oct 2K
639 # ifdef FG_NETWORK_OLK
640 if ( fgGetBool("/sim/networking/network-olk") ) {
642 other = head->next; /* put listpointer to start */
643 while ( other != tail) { /* display all except myself */
644 if ( strcmp( other->ipadr, fgd_mcp_ip) != 0) {
645 other->fgd_sel->select(1);
646 sgSetCoord( &fgdpos, other->sgFGD_COORD );
647 other->fgd_pos->setTransform( &fgdpos );
652 // fgd_sel->select(1);
653 // sgCopyMat4( sgTUX, current_view.sgVIEW);
655 // sgSetCoord( &fgdpos, sgFGD_VIEW );
656 // fgd_pos->setTransform( &fgdpos);
660 // position tile nodes and update range selectors
662 // this is done in the main loop now...
663 // global_tile_mgr.prep_ssg_nodes(visibility_meters);
665 if ( fgGetBool("/sim/rendering/skyblend") ) {
666 // draw the sky backdrop
668 // we need a white diffuse light for the phase of the moon
669 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
673 // return to the desired diffuse color
674 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
677 // draw the ssg scene
678 glEnable( GL_DEPTH_TEST );
680 ssgSetNearFar( scene_nearplane, scene_farplane );
681 ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
683 // This is a bit kludgy. Every 200 frames, do an extra
684 // traversal of the scene graph without drawing anything, but
685 // with the field-of-view set to 360x360 degrees. This
686 // ensures that out-of-range random objects that are not in
687 // the current view frustum will still be freed properly.
688 static int counter = 0;
690 if (counter == 200) {
693 // No need to put the near plane too close;
694 // this way, at least the aircraft can be
696 f.setNearFar(1000, 1000000);
698 ssgGetModelviewMatrix(m);
699 globals->get_scenery()->get_scene_graph()->cull(&f, m, true);
703 // change state for lighting here
706 // Set punch through fog density
707 glFogf (GL_FOG_DENSITY, fog_exp2_punch_through);
709 #ifdef FG_EXPERIMENTAL_LIGHTING
710 // Enable states for drawing points with GL_extension
711 if (glutExtensionSupported("GL_EXT_point_parameters")) {
712 glEnable(GL_POINT_SMOOTH);
713 float quadratic[3] = {1.0, 0.01, 0.0001};
714 // get the address of our OpenGL extensions
716 glPointParameterfEXT = (PFNGLPOINTPARAMETERFEXTPROC)
717 wglGetProcAddress("glPointParameterfEXT");
718 glPointParameterfvEXT = (PFNGLPOINTPARAMETERFVEXTPROC)
719 wglGetProcAddress("glPointParameterfvEXT");
721 // makes the points fade as they move away
722 glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT, quadratic);
723 glPointParameterfEXT(GL_POINT_SIZE_MIN_EXT, 1.0);
726 // Enable states for drawing runway lights with spherical mapping
727 glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
728 glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
729 glEnable(GL_TEXTURE_GEN_S);
730 glEnable(GL_TEXTURE_GEN_T);
732 //Maybe this is not the best way, but it works !!
733 glPolygonMode(GL_FRONT, GL_POINT);
735 glEnable(GL_CULL_FACE);
738 glDisable( GL_LIGHTING );
739 // blending function for runway lights
740 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
744 ssgSetNearFar( scene_nearplane, scene_farplane );
745 ssgCullAndDraw( globals->get_scenery()->get_lighting() );
747 //static int _frame_count = 0;
748 //if (_frame_count % 30 == 0) {
749 // printf("SSG: %s\n", ssgShowStats());
757 #ifdef FG_EXPERIMENTAL_LIGHTING
758 if (glutExtensionSupported("GL_EXT_point_parameters")) {
759 // Disable states used for runway lighting
760 glPolygonMode(GL_FRONT, GL_FILL);
762 glDisable(GL_TEXTURE_GEN_S);
763 glDisable(GL_TEXTURE_GEN_T);
764 glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
765 default_attenuation);
771 if ( fgGetBool("/sim/rendering/skyblend") ) {
772 // draw the sky cloud layers
773 if (fgGetBool("/environment/clouds/status")) {
774 thesky->postDraw( cur_fdm_state->get_Altitude()
775 * SG_FEET_TO_METER );
779 if ( fgGetBool("/sim/rendering/clouds3d") ) {
781 glDisable( GL_LIGHTING );
782 // cout << "drawing new clouds" << endl;
783 sgClouds3d->Draw((sgVec4 *)current__view->get_VIEW());
785 glEnable( GL_LIGHTING );
786 glEnable( GL_DEPTH_TEST );
787 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
790 globals->get_model_mgr()->draw();
791 globals->get_aircraft_model()->draw();
793 // display HUD && Panel
795 glDisable( GL_DEPTH_TEST );
796 // glDisable( GL_CULL_FACE );
797 // glDisable( GL_TEXTURE_2D );
799 // update the input subsystem
800 current_input.update(delta_time_sec);
802 // update the controls subsystem
803 globals->get_controls()->update(delta_time_sec);
805 hud_and_panel->apply();
808 // Use the hud_and_panel ssgSimpleState for rendering the ATC output
809 // This only works properly if called before the panel call
810 globals->get_ATC_display()->update(delta_time_sec);
812 // update the panel subsystem
813 if ( current_panel != NULL ) {
814 current_panel->update(delta_time_sec);
817 // We can do translucent menus, so why not. :-)
819 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
821 // glDisable ( GL_BLEND ) ;
823 glEnable( GL_DEPTH_TEST );
826 globals->get_logger()->update(delta_time_sec);
833 // Update internal time dependent calculations (i.e. flight model)
834 // FIXME: this distinction is obsolete; all subsystems now get delta
836 void fgUpdateTimeDepCalcs() {
837 static bool inited = false;
839 //SG_LOG(SG_FLIGHT,SG_INFO, "Updating time dep calcs()");
841 fgLIGHT *l = &cur_light_params;
846 // Initialize the FDM here if it hasn't been and if we have a
847 // scenery elevation hit.
849 // cout << "cur_fdm_state->get_inited() = " << cur_fdm_state->get_inited()
850 // << " cur_elev = " << scenery.get_cur_elev() << endl;
852 if ( !cur_fdm_state->get_inited() &&
853 globals->get_scenery()->get_cur_elev() > -9990 )
855 SG_LOG(SG_FLIGHT,SG_INFO, "Finally initializing fdm");
857 cur_fdm_state->init();
858 if ( cur_fdm_state->get_bound() ) {
859 cur_fdm_state->unbind();
861 cur_fdm_state->bind();
864 // conceptually, the following block could be done for each fdm
866 if ( !cur_fdm_state->get_inited() ) {
867 // do nothing, fdm isn't inited yet
869 // we have been inited, and we are good to go ...
875 globals->get_autopilot()->update(delta_time_sec);
876 cur_fdm_state->update(delta_time_sec);
877 globals->get_steam()->update(delta_time_sec);
880 globals->get_model_mgr()->update(delta_time_sec);
881 globals->get_aircraft_model()->update(delta_time_sec);
883 // update the view angle
884 globals->get_viewmgr()->update(delta_time_sec);
888 // Update solar system
889 globals->get_ephem()->update( globals->get_time_params()->getMjd(),
890 globals->get_time_params()->getLst(),
891 cur_fdm_state->get_Latitude() );
893 // Update radio stack model
894 current_radiostack->update(delta_time_sec);
898 void fgInitTimeDepCalcs( void ) {
903 static const double alt_adjust_ft = 3.758099;
904 static const double alt_adjust_m = alt_adjust_ft * SG_FEET_TO_METER;
907 // What should we do when we have nothing else to do? Let's get ready
908 // for the next move and update the display?
909 static void fgMainLoop( void ) {
911 // Update the elapsed time.
912 static bool first_time = true;
914 last_time_stamp.stamp();
917 current_time_stamp.stamp();
918 delta_time_sec = double(current_time_stamp - last_time_stamp) / 1000000.0;
919 last_time_stamp = current_time_stamp;
920 globals->inc_sim_time_sec( delta_time_sec );
922 static const SGPropertyNode *longitude
923 = fgGetNode("/position/longitude-deg");
924 static const SGPropertyNode *latitude
925 = fgGetNode("/position/latitude-deg");
926 static const SGPropertyNode *altitude
927 = fgGetNode("/position/altitude-ft");
928 static const SGPropertyNode *clock_freeze
929 = fgGetNode("/sim/freeze/clock", true);
930 static const SGPropertyNode *cur_time_override
931 = fgGetNode("/sim/time/cur-time-override", true);
933 static long remainder = 0;
935 #ifdef FANCY_FRAME_COUNTER
939 static time_t last_time = 0;
940 static int frames = 0;
941 #endif // FANCY_FRAME_COUNTER
943 SGTime *t = globals->get_time_params();
945 FGLocation * acmodel_location = 0;
946 if(cur_fdm_state->getACModel() != 0) {
947 acmodel_location = (FGLocation *) cur_fdm_state->getACModel()->get3DModel()->getFGLocation();
950 SG_LOG( SG_ALL, SG_DEBUG, "Running Main Loop");
951 SG_LOG( SG_ALL, SG_DEBUG, "======= ==== ====");
953 #ifdef FG_NETWORK_OLK
954 if ( fgGetBool("/sim/networking/network-olk") ) {
955 if ( net_is_registered == 0 ) { // We first have to reg. to fgd
956 // printf("FGD: Netupdate\n");
957 fgd_send_com( "A", FGFS_host); // Send Mat4 data
958 fgd_send_com( "B", FGFS_host); // Recv Mat4 data
963 #if defined( ENABLE_PLIB_JOYSTICK )
964 // Read joystick and update control settings
965 // if ( fgGetString("/sim/control-mode") == "joystick" )
969 #elif defined( ENABLE_GLUT_JOYSTICK )
970 // Glut joystick support works by feeding a joystick handler
971 // function to glut. This is taken care of once in the joystick
972 // init routine and we don't have to worry about it again.
976 globals->get_environment_mgr()->update(delta_time_sec);
979 // Fix elevation. I'm just sticking this here for now, it should
980 // probably move eventually
982 /* printf("Before - ground = %.2f runway = %.2f alt = %.2f\n",
983 scenery.get_cur_elev(),
984 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
985 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
987 // Curt is this code used? I don't see any problems when I comment it out.
988 if ( acmodel_location != 0 ) {
989 if ( acmodel_location->get_cur_elev_m() > -9990 && cur_fdm_state->get_inited() ) {
990 if ( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER <
991 (acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0) ) {
992 // now set aircraft altitude above ground
993 printf("(*) Current Altitude = %.2f < %.2f forcing to %.2f\n",
994 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
995 acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0,
996 acmodel_location->get_cur_elev_m() + alt_adjust_m );
997 cur_fdm_state->set_Altitude( (acmodel_location->get_cur_elev_m()
998 + alt_adjust_m) * SG_METER_TO_FEET );
999 SG_LOG( SG_ALL, SG_DEBUG,
1000 "<*> resetting altitude to "
1001 << cur_fdm_state->get_Altitude() * SG_FEET_TO_METER
1006 // End of code in question. (see Curt is this code used? above)
1008 /* printf("Adjustment - ground = %.2f runway = %.2f alt = %.2f\n",
1009 scenery.get_cur_elev(),
1010 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
1011 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
1013 // cout << "Warp = " << globals->get_warp() << endl;
1016 static bool last_clock_freeze = false;
1018 if ( clock_freeze->getBoolValue() ) {
1019 // clock freeze requested
1020 if ( cur_time_override->getLongValue() == 0 ) {
1021 fgSetLong( "/sim/time/cur-time-override", t->get_cur_time() );
1022 globals->set_warp( 0 );
1025 // no clock freeze requested
1026 if ( last_clock_freeze == true ) {
1027 // clock just unfroze, let's set warp as the difference
1028 // between frozen time and current time so we don't get a
1029 // time jump (and corresponding sky object and lighting
1031 globals->set_warp( cur_time_override->getLongValue() - time(NULL) );
1032 fgSetLong( "/sim/time/cur-time-override", 0 );
1034 if ( globals->get_warp_delta() != 0 ) {
1035 globals->inc_warp( globals->get_warp_delta() );
1039 last_clock_freeze = clock_freeze->getBoolValue();
1041 t->update( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
1042 latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
1043 cur_time_override->getLongValue(),
1044 globals->get_warp() );
1046 if ( globals->get_warp_delta() != 0 ) {
1047 fgUpdateSkyAndLightingParams();
1050 // update magvar model
1051 globals->get_mag()->update( longitude->getDoubleValue()
1052 * SGD_DEGREES_TO_RADIANS,
1053 latitude->getDoubleValue()
1054 * SGD_DEGREES_TO_RADIANS,
1055 altitude->getDoubleValue() * SG_FEET_TO_METER,
1056 globals->get_time_params()->getJD() );
1058 // Get elapsed time (in usec) for this past frame
1059 elapsed = fgGetTimeInterval();
1060 SG_LOG( SG_ALL, SG_DEBUG,
1061 "Elapsed time interval is = " << elapsed
1062 << ", previous remainder is = " << remainder );
1064 // Calculate frame rate average
1065 #ifdef FANCY_FRAME_COUNTER
1066 /* old fps calculation */
1067 if ( elapsed > 0 ) {
1070 for ( i = FG_FRAME_RATE_HISTORY - 2; i >= 0; i-- ) {
1071 tmp = general.get_frame(i);
1073 // printf("frame[%d] = %.2f\n", i, g->frames[i]);
1074 general.set_frame(i+1,tmp);
1076 tmp = 1000000.0 / (float)elapsed;
1077 general.set_frame(0,tmp);
1078 // printf("frame[0] = %.2f\n", general.frames[0]);
1080 general.set_frame_rate(accum / (float)FG_FRAME_RATE_HISTORY);
1081 // printf("ave = %.2f\n", general.frame_rate);
1084 if ( (t->get_cur_time() != last_time) && (last_time > 0) ) {
1085 general.set_frame_rate( frames );
1086 SG_LOG( SG_ALL, SG_DEBUG,
1087 "--> Frame rate is = " << general.get_frame_rate() );
1090 last_time = t->get_cur_time();
1094 // Run ATC subsystem
1095 globals->get_ATC_mgr()->update(delta_time_sec);
1097 // Run the AI subsystem
1098 // globals->get_AI_mgr()->update(delta_time_sec);
1102 // Calculate model iterations needed for next frame
1103 elapsed += remainder;
1105 global_multi_loop = (long)(((double)elapsed * 0.000001) *
1106 fgGetInt("/sim/model-hz"));
1107 remainder = elapsed - ( (global_multi_loop*1000000) /
1108 fgGetInt("/sim/model-hz") );
1109 SG_LOG( SG_ALL, SG_DEBUG,
1110 "Model iterations needed = " << global_multi_loop
1111 << ", new remainder = " << remainder );
1113 // chop max interations to something reasonable if the sim was
1114 // delayed for an excesive amount of time
1115 if ( global_multi_loop > 2.0 * fgGetInt("/sim/model-hz") ) {
1116 global_multi_loop = (int)(2.0 * fgGetInt("/sim/model-hz") );
1121 if ( global_multi_loop > 0 ) {
1122 fgUpdateTimeDepCalcs();
1124 SG_LOG( SG_ALL, SG_DEBUG,
1125 "Elapsed time is zero ... we're zinging" );
1128 // Do any I/O channel work that might need to be done
1129 globals->get_io()->update( delta_time_sec );
1131 // see if we need to load any deferred-load textures
1132 material_lib.load_next_deferred();
1134 // Run audio scheduler
1135 #ifdef ENABLE_AUDIO_SUPPORT
1136 if ( fgGetBool("/sim/sound/audible")
1137 && globals->get_soundmgr()->is_working() ) {
1138 globals->get_fx()->update( delta_time_sec );
1139 globals->get_soundmgr()->update( delta_time_sec );
1143 globals->get_systemmgr()->update( delta_time_sec );
1144 globals->get_instrumentmgr()->update( delta_time_sec );
1147 // Tile Manager updates - see if we need to load any new scenery tiles.
1148 // this code ties together the fdm, viewer and scenery classes...
1149 // we may want to move this to it's own class at some point
1151 double visibility_meters = fgGetDouble("/environment/visibility-m");
1152 FGViewer *current_view = globals->get_current_view();
1154 // update tile manager for FDM...
1155 // ...only if location is different than the viewer (to avoid duplicating effort)
1156 if( acmodel_location != current_view->getFGLocation() ) {
1157 if( acmodel_location != 0 ) {
1158 global_tile_mgr.prep_ssg_nodes(visibility_meters,
1159 acmodel_location->get_world_up(),
1160 acmodel_location->get_tile_center());
1161 global_tile_mgr.update( acmodel_location->getLongitude_deg(),
1162 acmodel_location->getLatitude_deg(),
1164 acmodel_location->get_absolute_view_pos(),
1165 acmodel_location->get_current_bucket(),
1166 acmodel_location->get_previous_bucket(),
1167 acmodel_location->get_tile_center()
1169 // save results of update in FGLocation for fdm...
1170 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1171 acmodel_location->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1173 acmodel_location->set_current_bucket( global_tile_mgr.get_current_bucket() );
1174 acmodel_location->set_previous_bucket( global_tile_mgr.get_previous_bucket() );
1175 acmodel_location->set_tile_center( globals->get_scenery()->get_next_center() );
1179 global_tile_mgr.prep_ssg_nodes(visibility_meters,
1180 current_view->getFGLocation()->get_world_up(),
1181 current_view->getFGLocation()->get_tile_center());
1182 // update tile manager for view...
1183 // IMPORTANT!!! the tilemgr update for view location _must_ be done last
1184 // after the FDM's until all of Flight Gear code references the viewer's location
1185 // for elevation instead of the "scenery's" current elevation.
1186 global_tile_mgr.update( current_view->getLongitude_deg(),
1187 current_view->getLatitude_deg(),
1189 current_view->get_absolute_view_pos(),
1190 current_view->getFGLocation()->get_current_bucket(),
1191 current_view->getFGLocation()->get_previous_bucket(),
1192 current_view->getFGLocation()->get_tile_center()
1194 // save results of update in FGLocation for fdm...
1195 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1196 current_view->getFGLocation()->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1198 current_view->getFGLocation()->set_current_bucket( global_tile_mgr.get_current_bucket() );
1199 current_view->getFGLocation()->set_previous_bucket( global_tile_mgr.get_previous_bucket() );
1200 current_view->getFGLocation()->set_tile_center( globals->get_scenery()->get_next_center() );
1202 // If fdm location is same as viewer's then we didn't do the update for fdm location
1203 // above so we need to save the viewer results in the fdm FGLocation as well...
1204 if( acmodel_location == current_view->getFGLocation() ) {
1205 if( acmodel_location != 0 ) {
1206 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1207 acmodel_location->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1209 acmodel_location->set_current_bucket( global_tile_mgr.get_current_bucket() );
1210 acmodel_location->set_previous_bucket( global_tile_mgr.get_previous_bucket() );
1211 acmodel_location->set_tile_center( globals->get_scenery()->get_next_center() );
1215 // END Tile Manager udpates
1220 SG_LOG( SG_ALL, SG_DEBUG, "" );
1224 // This is the top level master main function that is registered as
1225 // our idle funciton
1227 // The first few passes take care of initialization things (a couple
1228 // per pass) and once everything has been initialized fgMainLoop from
1231 static void fgIdleFunction ( void ) {
1232 // printf("idle state == %d\n", idle_state);
1234 if ( idle_state == 0 ) {
1235 // Initialize the splash screen right away
1236 if ( fgGetBool("/sim/startup/splash-screen") ) {
1241 } else if ( idle_state == 1 ) {
1242 // Initialize audio support
1243 #ifdef ENABLE_AUDIO_SUPPORT
1245 // Start the intro music
1246 if ( fgGetBool("/sim/startup/intro-music") ) {
1247 SGPath mp3file( globals->get_fg_root() );
1248 mp3file.append( "Sounds/intro.mp3" );
1250 SG_LOG( SG_GENERAL, SG_INFO,
1251 "Starting intro music: " << mp3file.str() );
1253 #if defined( __CYGWIN__ )
1254 string command = "start /m `cygpath -w " + mp3file.str() + "`";
1255 #elif defined( WIN32 )
1256 string command = "start /m " + mp3file.str();
1258 string command = "mpg123 " + mp3file.str() + "> /dev/null 2>&1";
1261 system ( command.c_str() );
1266 } else if ( idle_state == 2 ) {
1267 // These are a few miscellaneous things that aren't really
1268 // "subsystems" but still need to be initialized.
1271 if ( strstr ( general.get_glRenderer(), "Glide" ) ) {
1272 grTexLodBiasValue ( GR_TMU0, 1.0 ) ;
1277 } else if ( idle_state == 3 ) {
1278 // This is the top level init routine which calls all the
1279 // other subsystem initialization routines. If you are adding
1280 // a subsystem to flightgear, its initialization call should
1281 // located in this routine.
1282 if( !fgInitSubsystems()) {
1283 SG_LOG( SG_GENERAL, SG_ALERT,
1284 "Subsystem initializations failed ..." );
1289 } else if ( idle_state == 4 ) {
1290 // setup OpenGL view parameters
1294 } else if ( idle_state == 5 ) {
1297 } else if ( idle_state == 6 ) {
1301 cout << "Panel visible = " << fgPanelVisible() << endl;
1302 fgReshape( fgGetInt("/sim/startup/xsize"),
1303 fgGetInt("/sim/startup/ysize") );
1306 if ( idle_state == 1000 ) {
1307 // We've finished all our initialization steps, from now on we
1308 // run the main loop.
1310 glutIdleFunc(fgMainLoop);
1312 if ( fgGetBool("/sim/startup/splash-screen") ) {
1313 fgSplashUpdate(0.0);
1318 // options.cxx needs to see this for toggle_panel()
1319 // Handle new window size or exposure
1320 void fgReshape( int width, int height ) {
1323 if ( (!fgGetBool("/sim/virtual-cockpit"))
1324 && fgPanelVisible() && idle_state == 1000 ) {
1325 view_h = (int)(height * (current_panel->getViewHeight() -
1326 current_panel->getYOffset()) / 768.0);
1332 FGViewMgr *viewmgr = globals->get_viewmgr();
1333 for ( int i = 0; i < viewmgr->size(); ++i ) {
1334 viewmgr->get_view(i)->
1335 set_aspect_ratio((float)view_h / (float)width);
1338 glViewport( 0, (GLint)(height - view_h), (GLint)(width), (GLint)(view_h) );
1340 fgSetInt("/sim/startup/xsize", width);
1341 fgSetInt("/sim/startup/ysize", height);
1342 guiInitMouse(width, height);
1344 ssgSetFOV( viewmgr->get_current_view()->get_h_fov(),
1345 viewmgr->get_current_view()->get_v_fov() );
1348 sgClouds3d->Resize( viewmgr->get_current_view()->get_h_fov(),
1349 viewmgr->get_current_view()->get_v_fov() );
1352 // Initialize GLUT and define a main window
1353 int fgGlutInit( int *argc, char **argv ) {
1355 #if !defined( macintosh )
1356 // GLUT will extract all glut specific options so later on we only
1357 // need wory about our own.
1358 glutInit(argc, argv);
1361 // Define Display Parameters. Clouds3d works best with --bpp32 option
1362 if ( fgGetBool("/sim/rendering/clouds3d") ) {
1363 glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_ALPHA );
1365 glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
1368 SG_LOG( SG_GENERAL, SG_INFO, "Opening a window: " <<
1369 fgGetInt("/sim/startup/xsize") << "x"
1370 << fgGetInt("/sim/startup/ysize") );
1372 // Define initial window size
1373 glutInitWindowSize( fgGetInt("/sim/startup/xsize"),
1374 fgGetInt("/sim/startup/ysize") );
1376 // Initialize windows
1377 if ( !fgGetBool("/sim/startup/game-mode")) {
1378 // Open the regular window
1379 glutCreateWindow("FlightGear");
1380 #ifndef GLUT_WRONG_VERSION
1382 // Open the cool new 'game mode' window
1383 char game_mode_str[256];
1384 //#define SYNC_OPENGL_WITH_DESKTOP_SETTINGS
1385 #if defined(WIN32) && defined(SYNC_OPENGL_WITH_DESKTOP_SETTINGS)
1386 #ifndef ENUM_CURRENT_SETTINGS
1387 #define ENUM_CURRENT_SETTINGS ((DWORD)-1)
1388 #define ENUM_REGISTRY_SETTINGS ((DWORD)-2)
1392 dm.dmSize = sizeof(DEVMODE);
1393 EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm);
1394 fgSetInt("/sim/startup/xsize", dm.dmPelsWidth);
1395 fgSetInt("/sim/startup/ysize", dm.dmPelsHeight);
1396 glutInitWindowSize( fgGetInt("/sim/startup/xsize"),
1397 fgGetInt("/sim/startup/ysize") );
1398 sprintf( game_mode_str, "%dx%d:%d@%d",
1402 dm.dmDisplayFrequency );
1404 // Open the cool new 'game mode' window
1405 sprintf( game_mode_str, "width=%d height=%d bpp=%d",
1406 fgGetInt("/sim/startup/xsize"),
1407 fgGetInt("/sim/startup/ysize"),
1408 fgGetInt("/sim/rendering/bits-per-pixel"));
1410 #endif // HAVE_WINDOWS_H
1411 SG_LOG( SG_GENERAL, SG_INFO,
1412 "game mode params = " << game_mode_str );
1413 glutGameModeString( game_mode_str );
1414 glutEnterGameMode();
1415 #endif // GLUT_WRONG_VERSION
1418 // This seems to be the absolute earliest in the init sequence
1419 // that these calls will return valid info. Too bad it's after
1420 // we've already created and sized out window. :-(
1421 general.set_glVendor( (char *)glGetString ( GL_VENDOR ) );
1422 general.set_glRenderer( (char *)glGetString ( GL_RENDERER ) );
1423 general.set_glVersion( (char *)glGetString ( GL_VERSION ) );
1424 SG_LOG( SG_GENERAL, SG_INFO, general.get_glRenderer() );
1427 glGetIntegerv( GL_MAX_TEXTURE_SIZE, &tmp );
1428 general.set_glMaxTexSize( tmp );
1429 SG_LOG ( SG_GENERAL, SG_INFO, "Max texture size = " << tmp );
1431 glGetIntegerv( GL_DEPTH_BITS, &tmp );
1432 general.set_glDepthBits( tmp );
1433 SG_LOG ( SG_GENERAL, SG_INFO, "Depth buffer bits = " << tmp );
1439 // Initialize GLUT event handlers
1440 int fgGlutInitEvents( void ) {
1441 // call fgReshape() on window resizes
1442 glutReshapeFunc( fgReshape );
1444 // keyboard and mouse callbacks are set in FGInput::init
1446 // call fgMainLoop() whenever there is
1447 // nothing else to do
1448 glutIdleFunc( fgIdleFunction );
1451 glutDisplayFunc( fgRenderFrame );
1458 int mainLoop( int argc, char **argv ) {
1460 #if defined( macintosh )
1461 freopen ("stdout.txt", "w", stdout );
1462 freopen ("stderr.txt", "w", stderr );
1463 argc = ccommand( &argv );
1466 // set default log levels
1467 sglog().setLogLevels( SG_ALL, SG_INFO );
1470 #ifdef FLIGHTGEAR_VERSION
1471 version = FLIGHTGEAR_VERSION;
1473 version = "unknown version";
1475 SG_LOG( SG_GENERAL, SG_INFO, "FlightGear: Version "
1477 SG_LOG( SG_GENERAL, SG_INFO, "Built with " << SG_COMPILER_STR << endl );
1479 // Allocate global data structures. This needs to happen before
1480 // we parse command line options
1482 globals = new FGGlobals;
1484 #ifndef FG_WEATHERCM
1485 globals->set_environment_mgr(new FGEnvironmentMgr);
1488 // seed the random number generater
1491 SGRoute *route = new SGRoute;
1492 globals->set_route( route );
1494 FGControls *controls = new FGControls;
1495 globals->set_controls( controls );
1497 FGSteam *steam = new FGSteam;
1498 globals->set_steam( steam );
1500 string_list *col = new string_list;
1501 globals->set_channel_options_list( col );
1503 // Scan the config file(s) and command line options to see if
1504 // fg_root was specified (ignore all other options for now)
1505 fgInitFGRoot(argc, argv);
1507 // Check for the correct base package version
1508 static char required_version[] = "0.9.0";
1509 string base_version = fgBasePackageVersion();
1510 if ( !(base_version == required_version) ) {
1511 // tell the operator how to use this application
1514 cout << endl << "Base package check failed ... " \
1515 << "Found version " << base_version << " at: " \
1516 << globals->get_fg_root() << endl;
1517 cout << "Please upgrade to version" << required_version << endl;
1521 // Initialize the Aircraft directory to "" (UIUC)
1524 // Load the configuration parameters
1525 if ( !fgInitConfig(argc, argv) ) {
1526 SG_LOG( SG_GENERAL, SG_ALERT, "Config option parsing failed ..." );
1530 // Initialize the Window/Graphics environment.
1531 if( !fgGlutInit(&argc, argv) ) {
1532 SG_LOG( SG_GENERAL, SG_ALERT, "GLUT initialization failed ..." );
1536 // Initialize the various GLUT Event Handlers.
1537 if( !fgGlutInitEvents() ) {
1538 SG_LOG( SG_GENERAL, SG_ALERT,
1539 "GLUT event handler initialization failed ..." );
1543 // Initialize plib net interface
1544 netInit( &argc, argv );
1546 // Initialize ssg (from plib). Needs to come before we do any
1547 // other ssg stuff, but after opengl/glut has been initialized.
1550 // Initialize the user interface (we need to do this before
1551 // passing off control to glut and before fgInitGeneral to get our
1555 #ifdef GL_EXT_texture_lod_bias
1556 glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, -0.5 ) ;
1559 // Set position relative to glide slope if requested
1560 fgSetPosFromGlideSlope();
1562 // If we have an explicit, in-range lon/lat, use it.
1563 // If not, check for an airport-id and use that.
1564 // If not, default to the middle of the KSFO field.
1565 // The default values for lon/lat are deliberately out of range
1566 // so that the airport-id can take effect; valid lon/lat will
1567 // override airport-id, however.
1568 double lon_deg = fgGetDouble("/position/longitude-deg");
1569 double lat_deg = fgGetDouble("/position/latitude-deg");
1570 if (lon_deg < -180 || lon_deg > 180 || lat_deg < -90 || lat_deg > 90) {
1571 if ( fgGetString("/sim/startup/airport-id")[0] != '\0' ) {
1572 fgSetPosFromAirportIDandHdg( fgGetString("/sim/startup/airport-id"),
1573 fgGetDouble("/orientation/heading-deg") );
1574 // set tower position (a little off the heading for single
1576 fgSetTowerPosFromAirportID( fgGetString("/sim/startup/airport-id"),
1577 fgGetDouble("orientation/heading") );
1579 // Default to middle of KSFO field
1580 fgSetDouble("/position/longitude-deg", -122.374843);
1581 fgSetDouble("/position/latitude-deg", 37.619002);
1585 SGTime *t = fgInitTime();
1586 globals->set_time_params( t );
1588 // Do some quick general initializations
1589 if( !fgInitGeneral()) {
1590 SG_LOG( SG_GENERAL, SG_ALERT,
1591 "General initializations failed ..." );
1595 SGPath modelpath( globals->get_fg_root() );
1596 ssgModelPath( (char *)modelpath.c_str() );
1598 // Initialize the global scenery manager
1599 globals->set_scenery( new FGScenery );
1600 globals->get_scenery()->init();
1601 globals->get_scenery()->bind();
1603 ////////////////////////////////////////////////////////////////////
1604 // Initialize the general model subsystem.
1605 ////////////////////////////////////////////////////////////////////
1607 globals->set_model_loader(new FGModelLoader);
1608 globals->set_texture_loader(new FGTextureLoader);
1609 globals->set_model_mgr(new FGModelMgr);
1610 globals->get_model_mgr()->init();
1611 globals->get_model_mgr()->bind();
1613 ////////////////////////////////////////////////////////////////////
1614 // Initialize the 3D aircraft model subsystem.
1615 ////////////////////////////////////////////////////////////////////
1617 globals->set_aircraft_model(new FGAircraftModel);
1618 globals->get_aircraft_model()->init();
1619 globals->get_aircraft_model()->bind();
1621 ////////////////////////////////////////////////////////////////////
1622 // Initialize the view manager subsystem.
1623 ////////////////////////////////////////////////////////////////////
1625 FGViewMgr *viewmgr = new FGViewMgr;
1626 globals->set_viewmgr( viewmgr );
1631 // Initialize the sky
1632 SGPath ephem_data_path( globals->get_fg_root() );
1633 ephem_data_path.append( "Astro" );
1634 SGEphemeris *ephem = new SGEphemeris( ephem_data_path.c_str() );
1635 ephem->update( globals->get_time_params()->getMjd(),
1636 globals->get_time_params()->getLst(),
1638 globals->set_ephem( ephem );
1640 // TODO: move to environment mgr
1642 SGPath texture_path(globals->get_fg_root());
1643 texture_path.append("Textures");
1644 texture_path.append("Sky");
1645 for (int i = 0; i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) {
1646 SGCloudLayer * layer = new SGCloudLayer(texture_path.str());
1647 thesky->add_cloud_layer(layer);
1651 SGPath sky_tex_path( globals->get_fg_root() );
1652 sky_tex_path.append( "Textures" );
1653 sky_tex_path.append( "Sky" );
1654 thesky->texture_path( sky_tex_path.str() );
1656 thesky->build( 550.0, 550.0,
1657 globals->get_ephem()->getNumPlanets(),
1658 globals->get_ephem()->getPlanets(), 60000.0,
1659 globals->get_ephem()->getNumStars(),
1660 globals->get_ephem()->getStars(), 60000.0 );
1662 // Initialize MagVar model
1663 SGMagVar *magvar = new SGMagVar();
1664 globals->set_mag( magvar );
1666 // airport = new ssgBranch;
1667 // airport->setName( "Airport Lighting" );
1668 // lighting->addKid( airport );
1674 #ifdef FG_NETWORK_OLK
1675 // Do the network intialization
1676 if ( fgGetBool("/sim/networking/network-olk") ) {
1677 printf("Multipilot mode %s\n",
1678 fg_net_init( globals->get_scenery()->get_scene_graph() ) );
1682 // build our custom render states
1683 fgBuildRenderStates();
1685 // pass control off to the master GLUT event handler
1688 // we never actually get here ... but to avoid compiler warnings,
1694 // $$$ end - added VS Renganathan, 15 Oct 2K
1695 // - added Venky , 12 Nov 2K
1697 #if defined(__linux__) && defined(__i386__)
1699 static void handleFPE (int);
1704 fpu_control_t fpe_flags = 0;
1705 _FPU_GETCW(fpe_flags);
1706 // fpe_flags &= ~_FPU_MASK_IM; // invalid operation
1707 // fpe_flags &= ~_FPU_MASK_DM; // denormalized operand
1708 // fpe_flags &= ~_FPU_MASK_ZM; // zero-divide
1709 // fpe_flags &= ~_FPU_MASK_OM; // overflow
1710 // fpe_flags &= ~_FPU_MASK_UM; // underflow
1711 // fpe_flags &= ~_FPU_MASK_PM; // precision (inexact result)
1712 _FPU_SETCW(fpe_flags);
1713 signal(SIGFPE, handleFPE);
1720 SG_LOG(SG_GENERAL, SG_ALERT, "Floating point interrupt (SIGFPE)");
1733 short CPSGetCurrentProcess(PSN *psn);
1734 short CPSSetProcessName (PSN *psn, char *processname);
1735 short CPSEnableForegroundOperation(PSN *psn, int _arg2, int _arg3, int _arg4, int _arg5);
1736 short CPSSetFrontProcess(PSN *psn);
1739 #define CPSEnableFG(psn) CPSEnableForegroundOperation(psn,0x03,0x3C,0x2C,0x1103)
1743 // Main entry point; catch any exceptions that have made it this far.
1744 int main ( int argc, char **argv ) {
1746 // Enable floating-point exceptions for Linux/x86
1747 #if defined(__linux__) && defined(__i386__)
1751 // Enable floating-point exceptions for Windows
1752 #if defined( _MSC_VER ) && defined( DEBUG )
1753 // Christian, we should document what this does
1754 _control87( _EM_INEXACT, _MCW_EM );
1757 #if defined( HAVE_BC5PLUS )
1758 _control87(MCW_EM, MCW_EM); /* defined in float.h */
1761 // Keyboard focus hack
1766 glutInit (&argc, argv);
1768 CPSGetCurrentProcess(&psn);
1769 CPSSetProcessName(&psn, "FlightGear");
1771 CPSSetFrontProcess(&psn);
1775 // FIXME: add other, more specific
1778 mainLoop(argc, argv);
1779 } catch (sg_throwable &t) {
1780 // We must use cerr rather than
1781 // logging, since logging may be
1783 cerr << "Fatal error: " << t.getFormattedMessage()
1784 << "\n (received from " << t.getOrigin() << ')' << endl;
1792 void fgLoadDCS(void) {
1794 ssgEntity *ship_obj = NULL;
1796 char obj_filename[25];
1798 for ( int k = 0; k < 32; k++ ) {
1802 SGPath tile_path( globals->get_fg_root());
1803 tile_path.append( "Scenery" );
1804 tile_path.append( "Objects.txt" );
1805 sg_gzifstream in( tile_path.str() );
1806 if ( ! in.is_open() ) {
1807 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << tile_path.str() );
1810 SGPath modelpath( globals->get_fg_root() );
1811 modelpath.append( "Models" );
1812 modelpath.append( "Geometry" );
1814 SGPath texturepath( globals->get_fg_root() );
1815 texturepath.append( "Models" );
1816 texturepath.append( "Textures" );
1818 ssgModelPath( (char *)modelpath.c_str() );
1819 ssgTexturePath( (char *)texturepath.c_str() );
1821 ship_sel = new ssgSelector;
1824 while ( ! in.eof() ) {
1826 if ( in.get( c ) && c == '#' ) {
1830 in >> obj_filename >> obj_lat[objc] >> obj_lon[objc] >> obj_alt[objc];
1831 /* cout << endl << obj_filename << " " << obj_lat[objc] << " " << obj_lon[objc] << " " << obj_alt[objc] << endl;
1832 int chj=getchar();*/
1834 obj_lon[objc] *=SGD_DEGREES_TO_RADIANS;
1835 obj_lat[objc] *=SGD_DEGREES_TO_RADIANS;
1837 ship_pos[objc] = new ssgTransform;
1839 // type "repeat" in objects.txt to load one more
1840 // instance of the last object.
1842 if ( strcmp(obj_filename,"repeat") != 0) {
1844 globals->get_model_loader()->load_model( obj_filename );
1847 if ( ship_obj != NULL ) {
1848 ship_obj->setName(obj_filename);
1850 ship_obj->clrTraversalMaskBits( SSGTRAV_HOT );
1852 ship_obj->setTraversalMaskBits( SSGTRAV_HOT );
1853 ship_pos[objc]->addKid( ship_obj ); // add object to transform node
1854 ship_sel->addKid( ship_pos[objc] ); // add transform node to selector
1855 SG_LOG( SG_TERRAIN, SG_ALERT, "Loaded file: "
1858 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: "
1862 // temporary hack for deck lights - ultimately should move to PLib (when??)
1863 //const char *extn = file_extension ( obj_filename ) ;
1865 ssgVertexArray *lights = new ssgVertexArray( 100 );
1866 ssgVertexArray *lightpoints = new ssgVertexArray( 100 );
1867 ssgVertexArray *lightnormals = new ssgVertexArray( 100 );
1868 ssgVertexArray *lightdir = new ssgVertexArray( 100 );
1869 int ltype[500], light_type;
1870 static int ltcount = 0;
1872 sgVec3 rway_dir,rway_normal,lightpt;
1874 modelpath.append(obj_filename);
1875 sg_gzifstream in1( modelpath.str() );
1876 if ( ! in1.is_open() ) {
1877 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << modelpath.str() );
1879 while ( ! in1.eof() ) {
1881 if ( in1.get( c ) && c == '#' ) {
1886 //cout << token << endl;
1887 if ( token == "runway" ) {
1889 sgSetVec3 (rway_dir, node[0], node[1], node[2] );
1890 } else if ( token == "edgelight" ) {
1892 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
1894 } else if ( token == "taxi" ) {
1896 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
1898 } else if ( token == "vasi" ) {
1900 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
1902 } else if ( token == "threshold" ) {
1904 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
1906 } else if ( token == "rabbit" ) {
1908 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
1910 } else if ( token == "ols" ) {
1912 sgSetVec3 (rway_ols, node[0], node[1], node[2] );
1914 } else if ( token == "red" ) {
1916 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
1918 } else if ( token == "green" ) {
1920 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
1922 } else if ( token == "lp" ) {
1924 sgSetVec3 (lightpt, node[0], node[1], node[2] );
1925 lightpoints->add( lightpt );
1926 lightnormals->add( rway_normal );
1927 lightdir->add( rway_dir );
1928 ltype[ltcount]= light_type;
1931 if (in1.eof()) break;
1935 if ( lightpoints->getNum() ) {
1936 ssgBranch *lightpoints_branch;
1937 long int dummy = -999;
1938 dummy_tile = new FGTileEntry((SGBucket)dummy);
1939 dummy_tile->lightmaps_sequence = new ssgSelector;
1940 dummy_tile->ols_transform = new ssgTransform;
1942 // call function to generate the runway lights
1943 lightpoints_branch =
1944 dummy_tile->gen_runway_lights( lightpoints, lightnormals,
1946 lightpoints_brightness->addKid(lightpoints_branch);
1947 lightpoints_transform->addKid(lightpoints_brightness);
1948 //dummy_tile->lightmaps_sequence->setTraversalMaskBits( SSGTRAV_HOT );
1949 lightpoints_transform->addKid( dummy_tile->lightmaps_sequence );
1950 lightpoints_transform->ref();
1951 globals->get_scenery()->get_gnd_lights_branch()->addKid( lightpoints_transform );
1955 // end hack for deck lights
1959 if (in.eof()) break;
1963 SG_LOG ( SG_TERRAIN, SG_ALERT, "Finished object processing." );
1965 globals->get_scenery()->get_terrain_branch()->addKid( ship_sel ); //add selector node to root node
1972 void fgUpdateDCS (void) {
1974 // double eye_lat,eye_lon,eye_alt;
1975 // static double obj_head;
1976 double sl_radius,obj_latgc;
1977 // float nresultmat[4][4];
1978 // sgMat4 Trans,rothead,rotlon,rot180,rotlat,resultmat1,resultmat2,resultmat3;
1981 // Instantaneous Geodetic Lat/Lon/Alt of moving object
1982 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
1984 // Deck should be the first object in objects.txt in case of fdm=ada
1986 if (!strcmp(fgGetString("/sim/flight-model"), "ada")) {
1987 if ((fdm->get_iaux(1))==1)
1989 obj_lat[1] = fdm->get_daux(1)*SGD_DEGREES_TO_RADIANS;
1990 obj_lon[1] = fdm->get_daux(2)*SGD_DEGREES_TO_RADIANS;
1991 obj_alt[1] = fdm->get_daux(3);
1992 obj_pitch[1] = fdm->get_faux(1);
1993 obj_roll[1] = fdm->get_faux(2);
1997 for ( int m = 0; m < objc; m++ ) {
1998 //cout << endl << obj_lat[m]*SGD_RADIANS_TO_DEGREES << " " << obj_lon[m]*SGD_RADIANS_TO_DEGREES << " " << obj_alt[m] << " " << objc << endl;
2001 //Geodetic to Geocentric angles for rotation
2002 sgGeodToGeoc(obj_lat[m],obj_alt[m],&sl_radius,&obj_latgc);
2004 //moving object gbs-posn in cartesian coords
2005 Point3D obj_posn = Point3D( obj_lon[m],obj_lat[m],obj_alt[m]);
2006 Point3D obj_pos = sgGeodToCart( obj_posn );
2008 // Translate moving object w.r.t eye
2009 Point3D Objtrans = obj_pos - globals->get_scenery()->get_center();
2014 // rotate dynamic objects for lat,lon & alt and other motion about its axes
2017 sgMakeTransMat4( sgTRANS, bz[0],bz[1],bz[2]);
2019 sgVec3 ship_fwd,ship_rt,ship_up;
2020 sgSetVec3( ship_fwd, 1.0, 0.0, 0.0);//east,roll
2021 sgSetVec3( ship_rt, 0.0, 1.0, 0.0);//up,pitch
2022 sgSetVec3( ship_up, 0.0, 0.0, 1.0); //north,yaw
2024 sgMat4 sgROT_lon, sgROT_lat, sgROT_hdg, sgROT_pitch, sgROT_roll;
2025 sgMakeRotMat4( sgROT_lon, obj_lon[m]*SGD_RADIANS_TO_DEGREES, ship_up );
2026 sgMakeRotMat4( sgROT_lat, 90-obj_latgc*SGD_RADIANS_TO_DEGREES, ship_rt );
2027 sgMakeRotMat4( sgROT_hdg, 180.0, ship_up );
2028 sgMakeRotMat4( sgROT_pitch, obj_pitch[m], ship_rt );
2029 sgMakeRotMat4( sgROT_roll, obj_roll[m], ship_fwd );
2032 sgCopyMat4( sgTUX, sgROT_hdg );
2033 sgPostMultMat4( sgTUX, sgROT_pitch );
2034 sgPostMultMat4( sgTUX, sgROT_roll );
2035 sgPostMultMat4( sgTUX, sgROT_lat );
2036 sgPostMultMat4( sgTUX, sgROT_lon );
2037 sgPostMultMat4( sgTUX, sgTRANS );
2040 sgSetCoord(&shippos, sgTUX );
2041 ship_pos[m]->setTransform( &shippos );
2042 // temporary hack for deck lights - ultimately should move to PLib (when ??)
2044 if (lightpoints_transform) {
2045 lightpoints_transform->setTransform( &shippos );
2046 float sun_angle = cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES;
2047 if ( sun_angle > 89 ) {
2048 lightpoints_brightness->select(0x01);
2050 lightpoints_brightness->select(0x00);
2059 sgXformPnt3( rp, rway_ols, sgTUX );
2060 vp = globals->get_current_view()->get_view_pos();
2061 to[0] = rp[0]-vp[0];
2062 to[1] = rp[1]-vp[1];
2063 to[2] = rp[2]-vp[2];
2064 float dist = sgLengthVec3( to );
2065 alt = (current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER)-rway_ols[2];
2067 elev = asin(alt/dist)*SGD_RADIANS_TO_DEGREES;
2069 ref_elev = elev - 3.75; // +ve above, -ve below
2073 // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
2074 // if (ref_elev > 0.51) sel = 0x21;
2075 // if ((ref_elev <= 0.51) & (ref_elev > 0.17)) sel = 0x22;
2076 // if ((ref_elev <= 0.17) & (ref_elev >= -0.17)) sel = 0x24;
2077 // if ((ref_elev < -0.17) & (ref_elev >= -0.51)) sel = 0x28;
2078 // if (ref_elev < -0.51) sel = 0x30;
2079 // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
2080 dummy_tile->lightmaps_sequence->select(sel);
2083 sgCopyVec3 (up, ship_up);
2085 sgScaleVec3 (up, 4.0*ref_elev*dist/750.0);
2087 sgScaleVec3 (up, 4.0*ref_elev);
2088 dummy_tile->ols_transform->setTransform(up);
2089 //cout << "ref_elev " << ref_elev << endl;
2091 // end hack for deck lights
2094 if ( ship_sel != NULL ) {
2095 ship_sel->select(0xFFFFFFFE); // first object is ownship, added to acmodel
2099 // $$$ end - added VS Renganathan, 15 Oct 2K
2100 // added Venky , 12 Nov 2K