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>
39 #include <simgear/misc/exception.hxx>
40 #include <simgear/ephemeris/ephemeris.hxx>
41 #include <simgear/route/route.hxx>
43 #ifdef SG_MATH_EXCEPTION_CLASH
55 #include <string.h> // for strcmp()
62 #ifdef HAVE_SYS_STAT_H
63 # include <sys/stat.h> // for stat()
67 # include <unistd.h> // for stat()
70 #include <plib/netChat.h>
75 #include <simgear/constants.h> // for VERSION
76 #include <simgear/debug/logstream.hxx>
77 #include <simgear/math/polar3d.hxx>
78 #include <simgear/math/sg_random.h>
79 #include <simgear/misc/sg_path.hxx>
80 #include <simgear/scene/material/matlib.hxx>
81 #include <simgear/scene/model/animation.hxx>
82 #include <simgear/scene/model/loader.hxx>
83 #include <simgear/scene/model/location.hxx>
84 #include <simgear/scene/model/model.hxx>
85 #ifdef FG_USE_CLOUDS_3D
86 # include <simgear/sky/clouds3d/SkySceneLoader.hpp>
87 # include <simgear/sky/clouds3d/SkyUtil.hpp>
89 #include <simgear/sky/sky.hxx>
90 #include <simgear/timing/sg_time.hxx>
92 #include <Include/general.hxx>
94 #include <Aircraft/aircraft.hxx>
96 #include <ATC/ATCmgr.hxx>
97 #include <ATC/ATCdisplay.hxx>
98 #include <ATC/AIMgr.hxx>
101 #include <Autopilot/newauto.hxx>
103 #include <Cockpit/hud.hxx>
104 #include <Cockpit/cockpit.hxx>
105 #include <Cockpit/radiostack.hxx>
107 #include <FDM/UIUCModel/uiuc_aircraftdir.h>
109 #include <Model/acmodel.hxx>
110 #include <Model/modelmgr.hxx>
111 #include <Model/panelnode.hxx>
112 #ifdef FG_NETWORK_OLK
113 #include <NetworkOLK/network.h>
117 #include <MultiPlayer/multiplaytxmgr.hxx>
118 #include <MultiPlayer/multiplayrxmgr.hxx>
121 #include <Scenery/scenery.hxx>
122 #include <Scenery/tilemgr.hxx>
123 #ifdef ENABLE_AUDIO_SUPPORT
124 # include <Sound/fg_fx.hxx>
125 # include <Sound/morse.hxx>
127 #include <Systems/system_mgr.hxx>
128 #include <Instrumentation/instrument_mgr.hxx>
129 #include <Time/FGEventMgr.hxx>
130 #include <Time/fg_timer.hxx>
131 #include <Time/light.hxx>
132 #include <Time/sunpos.hxx>
133 #include <Time/tmp.hxx>
136 #include <simgear/misc/sgstream.hxx>
137 #include <simgear/math/point3d.hxx>
138 #include <FDM/flight.hxx>
139 #include <FDM/ADA.hxx>
140 #include <Scenery/tileentry.hxx>
142 #include "fg_commands.hxx"
144 #ifdef FG_EXPERIMENTAL_POINT_LIGHTING
146 typedef void (APIENTRY * PFNGLPOINTPARAMETERFEXTPROC)(GLenum pname,
148 typedef void (APIENTRY * PFNGLPOINTPARAMETERFVEXTPROC)(GLenum pname,
149 const GLfloat *params);
151 PFNGLPOINTPARAMETERFEXTPROC glPointParameterfEXT = 0;
152 PFNGLPOINTPARAMETERFVEXTPROC glPointParameterfvEXT = 0;
156 typedef void (* OpenGLFuncExt)(GLenum pname, GLfloat param);
157 typedef void (* OpenGLFuncExtv)(GLenum pname, const GLfloat *params);
159 OpenGLFuncExt glPointParameterfEXT = 0;
160 OpenGLFuncExtv glPointParameterfvEXT = 0;
164 float default_attenuation[3] = {1.0, 0.0, 0.0};
165 //Required for using GL_extensions
166 void fgLoadDCS (void);
167 void fgUpdateDCS (void);
168 ssgSelector *ship_sel=NULL;
169 // upto 32 instances of a same object can be loaded.
170 ssgTransform *ship_pos[32];
171 double obj_lat[32],obj_lon[32],obj_alt[32],obj_pitch[32],obj_roll[32];
173 ssgSelector *lightpoints_brightness = new ssgSelector;
174 ssgTransform *lightpoints_transform = new ssgTransform;
175 FGTileEntry *dummy_tile;
178 // Clip plane settings...
179 float scene_nearplane = 0.5f;
180 float scene_farplane = 120000.0f;
182 static double delta_time_sec = 0;
186 # include <WeatherCM/FGLocalWeatherDatabase.h>
188 # include <Environment/environment_mgr.hxx>
193 #include "fg_init.hxx"
195 #include "fg_props.hxx"
196 #include "globals.hxx"
197 #include "splash.hxx"
198 #include "viewmgr.hxx"
199 #include "options.hxx"
200 #include "logger.hxx"
203 # include <console.h> // -dw- for command line dialog
207 FGEventMgr global_events;
209 // This is a record containing a bit of global housekeeping information
212 // Specify our current idle function state. This is used to run all
213 // our initializations out of the glutIdleLoop() so that we can get a
214 // splash screen up and running right away.
215 static int idle_state = 0;
216 static long global_multi_loop;
218 // fog constants. I'm a little nervous about putting actual code out
219 // here but it seems to work (?)
220 static const double m_log01 = -log( 0.01 );
221 static const double sqrt_m_log01 = sqrt( m_log01 );
222 static GLfloat fog_exp_density;
223 static GLfloat fog_exp2_density;
224 static GLfloat rwy_exp2_punch_through;
225 static GLfloat taxi_exp2_punch_through;
226 static GLfloat ground_exp2_punch_through;
228 #ifdef FG_NETWORK_OLK
229 ssgSelector *fgd_sel = NULL;
230 ssgTransform *fgd_pos = NULL;
236 #ifdef FG_USE_CLOUDS_3D
237 SkySceneLoader *sgClouds3d;
238 bool _bcloud_orig = true;
242 sgMat4 copy_of_ssgOpenGLAxisSwapMatrix =
244 { 1.0f, 0.0f, 0.0f, 0.0f },
245 { 0.0f, 0.0f, -1.0f, 0.0f },
246 { 0.0f, 1.0f, 0.0f, 0.0f },
247 { 0.0f, 0.0f, 0.0f, 1.0f }
250 // The following defines flightgear options. Because glutlib will also
251 // want to parse its own options, those options must not be included here
252 // or they will get parsed by the main program option parser. Hence case
253 // is significant for any option added that might be in conflict with
256 // glutlib parses for:
258 // -direct (invalid in Win32)
262 // -indirect (invalid in Win32)
265 // Note that glutlib depends upon strings while this program's
266 // option parser wants only initial characters followed by numbers
271 ssgSimpleState *cloud3d_imposter_state;
272 ssgSimpleState *default_state;
273 ssgSimpleState *hud_and_panel;
274 ssgSimpleState *menus;
276 SGTimeStamp last_time_stamp;
277 SGTimeStamp current_time_stamp;
280 void fgBuildRenderStates( void ) {
281 default_state = new ssgSimpleState;
282 default_state->ref();
283 default_state->disable( GL_TEXTURE_2D );
284 default_state->enable( GL_CULL_FACE );
285 default_state->enable( GL_COLOR_MATERIAL );
286 default_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
287 default_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
288 default_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
289 default_state->disable( GL_BLEND );
290 default_state->disable( GL_ALPHA_TEST );
291 default_state->disable( GL_LIGHTING );
293 cloud3d_imposter_state = new ssgSimpleState;
294 cloud3d_imposter_state->ref();
295 cloud3d_imposter_state->enable( GL_TEXTURE_2D );
296 cloud3d_imposter_state->enable( GL_CULL_FACE );
297 cloud3d_imposter_state->enable( GL_COLOR_MATERIAL );
298 cloud3d_imposter_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
299 cloud3d_imposter_state->setMaterial( GL_DIFFUSE, 1, 1, 1, 1 );
300 cloud3d_imposter_state->setMaterial( GL_AMBIENT, 1, 1, 1, 1 );
301 cloud3d_imposter_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
302 cloud3d_imposter_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
303 cloud3d_imposter_state->enable( GL_BLEND );
304 cloud3d_imposter_state->enable( GL_ALPHA_TEST );
305 cloud3d_imposter_state->disable( GL_LIGHTING );
307 hud_and_panel = new ssgSimpleState;
308 hud_and_panel->ref();
309 hud_and_panel->disable( GL_CULL_FACE );
310 hud_and_panel->disable( GL_TEXTURE_2D );
311 hud_and_panel->disable( GL_LIGHTING );
312 hud_and_panel->enable( GL_BLEND );
314 menus = new ssgSimpleState;
316 menus->disable( GL_CULL_FACE );
317 menus->disable( GL_TEXTURE_2D );
318 menus->enable( GL_BLEND );
322 // fgInitVisuals() -- Initialize various GL/view parameters
323 void fgInitVisuals( void ) {
326 l = &cur_light_params;
328 #ifndef GLUT_WRONG_VERSION
329 // Go full screen if requested ...
330 if ( fgGetBool("/sim/startup/fullscreen") ) {
335 // If enabled, normal vectors specified with glNormal are scaled
336 // to unit length after transformation. Enabling this has
337 // performance implications. See the docs for glNormal.
338 // glEnable( GL_NORMALIZE );
340 glEnable( GL_LIGHTING );
341 glEnable( GL_LIGHT0 );
342 // glLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec ); // done later with ssg
345 sgSetVec3( sunpos, l->sun_vec[0], l->sun_vec[1], l->sun_vec[2] );
346 ssgGetLight( 0 ) -> setPosition( sunpos );
348 glFogi (GL_FOG_MODE, GL_EXP2);
349 if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) ||
350 (!fgGetBool("/sim/rendering/shading"))) {
351 // if fastest fog requested, or if flat shading force fastest
352 glHint ( GL_FOG_HINT, GL_FASTEST );
353 } else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) {
354 glHint ( GL_FOG_HINT, GL_NICEST );
356 if ( fgGetBool("/sim/rendering/wireframe") ) {
358 glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
361 // This is the default anyways, but it can't hurt
362 glFrontFace ( GL_CCW );
365 // glEnable(GL_POINT_SMOOTH);
366 // glEnable(GL_LINE_SMOOTH);
367 // glEnable(GL_POLYGON_SMOOTH);
371 // For HiRes screen Dumps using Brian Pauls TR Library
372 void trRenderFrame( void ) {
374 if ( fgPanelVisible() ) {
375 GLfloat height = fgGetInt("/sim/startup/ysize");
377 (globals->get_current_panel()->getViewHeight() - globals->get_current_panel()->getYOffset())
378 * (height / 768.0) + 1;
379 glTranslatef( 0.0, view_h, 0.0 );
382 static GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
383 static GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
385 fgLIGHT *l = &cur_light_params;
387 glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
388 l->adj_fog_color[2], l->adj_fog_color[3]);
390 glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
392 // set the opengl state to known default values
393 default_state->force();
396 glFogf ( GL_FOG_DENSITY, fog_exp2_density);
397 glFogi ( GL_FOG_MODE, GL_EXP2 );
398 glFogfv ( GL_FOG_COLOR, l->adj_fog_color );
400 // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
401 // we only update GL_AMBIENT for our lights we will never get
402 // a completely dark scene. So, we set GL_LIGHT_MODEL_AMBIENT
403 // explicitely to black.
404 glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
405 glLightModeli( GL_LIGHT_MODEL_LOCAL_VIEWER, GL_FALSE );
407 ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
409 // texture parameters
410 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
411 glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
413 // we need a white diffuse light for the phase of the moon
414 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
417 // draw the ssg scene
418 // return to the desired diffuse color
419 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
420 glEnable( GL_DEPTH_TEST );
421 ssgSetNearFar( scene_nearplane, scene_farplane );
422 ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
425 glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
426 ssgSetNearFar( scene_nearplane, scene_farplane );
427 ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() );
429 ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() );
431 if (fgGetBool("/environment/clouds/status"))
432 thesky->postDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER );
434 globals->get_model_mgr()->draw();
435 globals->get_aircraft_model()->draw();
439 // Update all Visuals (redraws anything graphics related)
440 void fgRenderFrame() {
442 GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
443 GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
445 // Process/manage pending events
446 global_events.update( delta_time_sec );
448 // static const SGPropertyNode *longitude
449 // = fgGetNode("/position/longitude-deg");
450 // static const SGPropertyNode *latitude
451 // = fgGetNode("/position/latitude-deg");
452 // static const SGPropertyNode *altitude
453 // = fgGetNode("/position/altitude-ft");
454 static const SGPropertyNode *groundlevel_nearplane
455 = fgGetNode("/sim/current-view/ground-level-nearplane-m");
457 // Update the default (kludged) properties.
460 FGViewer *current__view = globals->get_current_view();
462 fgLIGHT *l = &cur_light_params;
463 static double last_visibility = -9999;
466 double actual_visibility;
467 if (fgGetBool("/environment/clouds/status"))
468 actual_visibility = thesky->get_visibility();
470 actual_visibility = fgGetDouble("/environment/visibility-m");
471 if ( actual_visibility != last_visibility ) {
472 last_visibility = actual_visibility;
474 fog_exp_density = m_log01 / actual_visibility;
475 fog_exp2_density = sqrt_m_log01 / actual_visibility;
476 ground_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5);
477 if ( actual_visibility < 8000 ) {
478 rwy_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 2.5);
479 taxi_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5);
481 rwy_exp2_punch_through = sqrt_m_log01 / ( 8000 * 2.5 );
482 taxi_exp2_punch_through = sqrt_m_log01 / ( 8000 * 1.5 );
487 // GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
488 // GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
489 // GLfloat terrain_color[4] = { 0.54, 0.44, 0.29, 1.0 };
490 // GLfloat mat_shininess[] = { 10.0 };
491 GLbitfield clear_mask;
493 if ( idle_state != 1000 ) {
494 // still initializing, draw the splash screen
495 if ( fgGetBool("/sim/startup/splash-screen") ) {
496 fgSplashUpdate(0.0, 1.0);
498 // Keep resetting sim time while the sim is initializing
499 globals->set_sim_time_sec( 0.0 );
500 SGAnimation::set_sim_time_sec( 0.0 );
502 // idle_state is now 1000 meaning we've finished all our
503 // initializations and are running the main loop, so this will
504 // now work without seg faulting the system.
506 // calculate our current position in cartesian space
507 globals->get_scenery()->set_center( globals->get_scenery()->get_next_center() );
510 fgReshape( fgGetInt("/sim/startup/xsize"),
511 fgGetInt("/sim/startup/ysize") );
513 if ( fgGetBool("/sim/rendering/clouds3d") ) {
514 glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
515 cloud3d_imposter_state->force();
517 glColor4f( 1.0, 1.0, 1.0, 1.0 );
518 glEnable(GL_DEPTH_TEST);
520 glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
522 #ifdef FG_USE_CLOUDS_3D
523 if ( _bcloud_orig ) {
524 Point3D c = globals->get_scenery()->get_center();
525 sgClouds3d->Set_Cloud_Orig( &c );
526 _bcloud_orig = false;
528 sgClouds3d->Update( current__view->get_absolute_view_pos() );
530 glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
531 glDisable(GL_DEPTH_TEST);
534 clear_mask = GL_DEPTH_BUFFER_BIT;
535 if ( fgGetBool("/sim/rendering/wireframe") ) {
536 clear_mask |= GL_COLOR_BUFFER_BIT;
539 if ( fgGetBool("/sim/rendering/skyblend") ) {
540 if ( fgGetBool("/sim/rendering/textures") ) {
541 // glClearColor(black[0], black[1], black[2], black[3]);
542 glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
543 l->adj_fog_color[2], l->adj_fog_color[3]);
544 clear_mask |= GL_COLOR_BUFFER_BIT;
547 glClearColor(l->sky_color[0], l->sky_color[1],
548 l->sky_color[2], l->sky_color[3]);
549 clear_mask |= GL_COLOR_BUFFER_BIT;
551 glClear( clear_mask );
553 // Tell GL we are switching to model view parameters
555 // I really should create a derived ssg node or use a call
556 // back or something so that I can draw the sky within the
557 // ssgCullAndDraw() function, but for now I just mimic what
558 // ssg does to set up the model view matrix
559 glMatrixMode(GL_MODELVIEW);
561 ssgSetCamera( (sgVec4 *)current__view->get_VIEW() );
563 // set the opengl state to known default values
564 default_state->force();
566 // update fog params if visibility has changed
567 double visibility_meters = fgGetDouble("/environment/visibility-m");
568 thesky->set_visibility(visibility_meters);
570 thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
571 ( global_multi_loop * fgGetInt("/sim/speed-up") )
572 / (double)fgGetInt("/sim/model-hz") );
574 // Set correct opengl fog density
575 glFogf (GL_FOG_DENSITY, fog_exp2_density);
577 // update the sky dome
578 if ( fgGetBool("/sim/rendering/skyblend") ) {
580 SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
581 << cur_light_params.sky_color[0] << " "
582 << cur_light_params.sky_color[1] << " "
583 << cur_light_params.sky_color[2] << " "
584 << cur_light_params.sky_color[3] );
585 SG_LOG( SG_GENERAL, SG_BULK, " fog = "
586 << cur_light_params.fog_color[0] << " "
587 << cur_light_params.fog_color[1] << " "
588 << cur_light_params.fog_color[2] << " "
589 << cur_light_params.fog_color[3] );
590 SG_LOG( SG_GENERAL, SG_BULK,
591 " sun_angle = " << cur_light_params.sun_angle
592 << " moon_angle = " << cur_light_params.moon_angle );
594 thesky->repaint( cur_light_params.sky_color,
595 cur_light_params.adj_fog_color,
596 cur_light_params.sun_angle,
597 cur_light_params.moon_angle,
598 globals->get_ephem()->getNumPlanets(),
599 globals->get_ephem()->getPlanets(),
600 globals->get_ephem()->getNumStars(),
601 globals->get_ephem()->getStars() );
604 SG_LOG( SG_GENERAL, SG_BULK,
605 "thesky->reposition( view_pos = " << view_pos[0] << " "
606 << view_pos[1] << " " << view_pos[2] );
607 SG_LOG( SG_GENERAL, SG_BULK,
608 " zero_elev = " << zero_elev[0] << " "
609 << zero_elev[1] << " " << zero_elev[2]
610 << " lon = " << cur_fdm_state->get_Longitude()
611 << " lat = " << cur_fdm_state->get_Latitude() );
612 SG_LOG( SG_GENERAL, SG_BULK,
613 " sun_rot = " << cur_light_params.sun_rotation
614 << " gst = " << SGTime::cur_time_params->getGst() );
615 SG_LOG( SG_GENERAL, SG_BULK,
616 " sun ra = " << globals->get_ephem()->getSunRightAscension()
617 << " sun dec = " << globals->get_ephem()->getSunDeclination()
618 << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
619 << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
622 thesky->reposition( current__view->get_view_pos(),
623 current__view->get_zero_elev(),
624 current__view->get_world_up(),
625 current__view->getLongitude_deg()
626 * SGD_DEGREES_TO_RADIANS,
627 current__view->getLatitude_deg()
628 * SGD_DEGREES_TO_RADIANS,
629 current__view->getAltitudeASL_ft()
631 cur_light_params.sun_rotation,
632 globals->get_time_params()->getGst(),
633 globals->get_ephem()->getSunRightAscension(),
634 globals->get_ephem()->getSunDeclination(),
636 globals->get_ephem()->getMoonRightAscension(),
637 globals->get_ephem()->getMoonDeclination(),
641 glEnable( GL_DEPTH_TEST );
642 if ( strcmp(fgGetString("/sim/rendering/fog"), "disabled") ) {
644 glFogi( GL_FOG_MODE, GL_EXP2 );
645 glFogfv( GL_FOG_COLOR, l->adj_fog_color );
648 // set sun/lighting parameters
649 ssgGetLight( 0 ) -> setPosition( l->sun_vec );
651 // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
652 // we only update GL_AMBIENT for our lights we will never get
653 // a completely dark scene. So, we set GL_LIGHT_MODEL_AMBIENT
654 // explicitely to black.
655 glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
657 ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
658 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
659 ssgGetLight( 0 ) -> setColour( GL_SPECULAR, l->scene_specular );
661 // texture parameters
662 // glEnable( GL_TEXTURE_2D );
663 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
664 glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
666 // glMatrixMode( GL_PROJECTION );
668 ssgSetFOV( current__view->get_h_fov(),
669 current__view->get_v_fov() );
672 current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER
673 - globals->get_scenery()->get_cur_elev();
676 scene_nearplane = 10.0f;
677 scene_farplane = 120000.0f;
679 scene_nearplane = groundlevel_nearplane->getDoubleValue();
680 scene_farplane = 120000.0f;
683 ssgSetNearFar( scene_nearplane, scene_farplane );
685 // $$$ begin - added VS Renganthan 17 Oct 2K
688 // $$$ end - added VS Renganthan 17 Oct 2K
690 # ifdef FG_NETWORK_OLK
691 if ( fgGetBool("/sim/networking/network-olk") ) {
693 other = head->next; /* put listpointer to start */
694 while ( other != tail) { /* display all except myself */
695 if ( strcmp( other->ipadr, fgd_mcp_ip) != 0) {
696 other->fgd_sel->select(1);
697 sgSetCoord( &fgdpos, other->sgFGD_COORD );
698 other->fgd_pos->setTransform( &fgdpos );
703 // fgd_sel->select(1);
704 // sgCopyMat4( sgTUX, current_view.sgVIEW);
706 // sgSetCoord( &fgdpos, sgFGD_VIEW );
707 // fgd_pos->setTransform( &fgdpos);
712 // Update any multiplayer models
713 globals->get_multiplayer_rx_mgr()->Update();
716 if ( fgGetBool("/sim/rendering/skyblend") &&
717 fgGetBool("/sim/rendering/draw-otw") )
719 // draw the sky backdrop
721 // we need a white diffuse light for the phase of the moon
722 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
726 // return to the desired diffuse color
727 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
730 // draw the ssg scene
731 glEnable( GL_DEPTH_TEST );
733 ssgSetNearFar( scene_nearplane, scene_farplane );
735 if ( fgGetBool("/sim/rendering/wireframe") ) {
737 glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
739 if ( fgGetBool("/sim/rendering/draw-otw") ) {
740 ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
743 // This is a bit kludgy. Every 200 frames, do an extra
744 // traversal of the scene graph without drawing anything, but
745 // with the field-of-view set to 360x360 degrees. This
746 // ensures that out-of-range random objects that are not in
747 // the current view frustum will still be freed properly.
748 static int counter = 0;
750 if (counter == 200) {
753 // No need to put the near plane too close;
754 // this way, at least the aircraft can be
756 f.setNearFar(1000, 1000000);
758 ssgGetModelviewMatrix(m);
759 globals->get_scenery()->get_scene_graph()->cull(&f, m, true);
763 // change state for lighting here
765 // draw runway lighting
766 glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
767 ssgSetNearFar( scene_nearplane, scene_farplane );
769 #ifdef FG_EXPERIMENTAL_POINT_LIGHTING
770 // Enable states for drawing points with GL_extension
771 glEnable(GL_POINT_SMOOTH);
773 if ( fgGetBool("/sim/rendering/distance-attenuation")
774 && glutExtensionSupported("GL_EXT_point_parameters") )
776 float quadratic[3] = {1.0, 0.001, 0.0000001};
777 // makes the points fade as they move away
778 glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT, quadratic);
779 glPointParameterfEXT(GL_POINT_SIZE_MIN_EXT, 1.0);
783 // blending function for runway lights
784 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
787 glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
788 glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
789 glEnable(GL_TEXTURE_GEN_S);
790 glEnable(GL_TEXTURE_GEN_T);
791 glPolygonMode(GL_FRONT, GL_POINT);
793 // draw runway lighting
794 if ( fgGetBool("/sim/rendering/draw-otw") ) {
795 ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() );
798 // change punch through and then draw taxi lighting
799 glFogf ( GL_FOG_DENSITY, fog_exp2_density );
801 // sgSetVec3( taxi_fog, 0.0, 0.0, 0.0 );
802 // glFogfv ( GL_FOG_COLOR, taxi_fog );
803 if ( fgGetBool("/sim/rendering/draw-otw") ) {
804 ssgCullAndDraw( globals->get_scenery()->get_taxi_lights_root() );
808 glPolygonMode(GL_FRONT, GL_FILL);
809 glDisable(GL_TEXTURE_GEN_S);
810 glDisable(GL_TEXTURE_GEN_T);
812 //static int _frame_count = 0;
813 //if (_frame_count % 30 == 0) {
814 // printf("SSG: %s\n", ssgShowStats());
822 #ifdef FG_EXPERIMENTAL_POINT_LIGHTING
823 if ( fgGetBool("/sim/rendering/distance-attenuation")
824 && glutExtensionSupported("GL_EXT_point_parameters") )
826 glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
827 default_attenuation);
831 glDisable(GL_POINT_SMOOTH);
834 // draw ground lighting
835 glFogf (GL_FOG_DENSITY, ground_exp2_punch_through);
836 if ( fgGetBool("/sim/rendering/draw-otw") ) {
837 ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() );
840 if ( fgGetBool("/sim/rendering/skyblend") ) {
841 // draw the sky cloud layers
842 if ( fgGetBool("/environment/clouds/status") &&
843 fgGetBool("/sim/rendering/draw-otw") )
845 thesky->postDraw( cur_fdm_state->get_Altitude()
846 * SG_FEET_TO_METER );
850 if ( fgGetBool("/sim/rendering/clouds3d") &&
851 fgGetBool("/sim/rendering/draw-otw") )
854 glDisable( GL_LIGHTING );
855 // cout << "drawing new clouds" << endl;
857 glEnable(GL_DEPTH_TEST);
859 glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
862 glEnable( GL_TEXTURE_2D );
863 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
864 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
865 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
866 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
869 #ifdef FG_USE_CLOUDS_3D
870 sgClouds3d->Draw((sgVec4 *)current__view->get_VIEW());
873 glEnable( GL_LIGHTING );
874 glEnable( GL_DEPTH_TEST );
875 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
878 if ( fgGetBool("/sim/rendering/draw-otw") ) {
879 globals->get_model_mgr()->draw();
880 globals->get_aircraft_model()->draw();
883 // display HUD && Panel
885 glDisable( GL_DEPTH_TEST );
886 // glDisable( GL_CULL_FACE );
887 // glDisable( GL_TEXTURE_2D );
889 // update the controls subsystem
890 globals->get_controls()->update(delta_time_sec);
892 hud_and_panel->apply();
895 // Use the hud_and_panel ssgSimpleState for rendering the ATC output
896 // This only works properly if called before the panel call
897 if((fgGetBool("/sim/ATC/enabled")) || (fgGetBool("/sim/ai-traffic/enabled")))
898 globals->get_ATC_display()->update(delta_time_sec);
900 // update the panel subsystem
901 if ( globals->get_current_panel() != NULL ) {
902 globals->get_current_panel()->update(delta_time_sec);
906 // We can do translucent menus, so why not. :-)
908 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
910 // glDisable ( GL_BLEND ) ;
912 glEnable( GL_DEPTH_TEST );
915 // Fade out the splash screen over the first three seconds.
916 double t = globals->get_sim_time_sec();
918 fgSplashUpdate(0.0, 1.0);
919 } else if ( t <= 3.0) {
920 fgSplashUpdate(0.0, (3.0 - t) / 2.0);
928 // Update internal time dependent calculations (i.e. flight model)
929 // FIXME: this distinction is obsolete; all subsystems now get delta
931 void fgUpdateTimeDepCalcs() {
932 static bool inited = false;
934 //SG_LOG(SG_FLIGHT,SG_INFO, "Updating time dep calcs()");
936 fgLIGHT *l = &cur_light_params;
938 // Initialize the FDM here if it hasn't been and if we have a
939 // scenery elevation hit.
941 // cout << "cur_fdm_state->get_inited() = " << cur_fdm_state->get_inited()
942 // << " cur_elev = " << scenery.get_cur_elev() << endl;
944 if ( !cur_fdm_state->get_inited() &&
945 globals->get_scenery()->get_cur_elev() > -9990 )
947 SG_LOG(SG_FLIGHT,SG_INFO, "Finally initializing fdm");
948 cur_fdm_state->init();
949 if ( cur_fdm_state->get_bound() ) {
950 cur_fdm_state->unbind();
952 cur_fdm_state->bind();
956 globals->get_environment_mgr()->update(delta_time_sec);
959 // conceptually, the following block could be done for each fdm
961 if ( !cur_fdm_state->get_inited() ) {
962 // do nothing, fdm isn't inited yet
964 // we have been inited, and we are good to go ...
970 globals->get_autopilot()->update(delta_time_sec);
971 cur_fdm_state->update(delta_time_sec);
974 globals->get_model_mgr()->update(delta_time_sec);
975 globals->get_aircraft_model()->update(delta_time_sec);
977 // update the view angle
978 globals->get_viewmgr()->update(delta_time_sec);
982 // Update solar system
983 globals->get_ephem()->update( globals->get_time_params()->getMjd(),
984 globals->get_time_params()->getLst(),
985 cur_fdm_state->get_Latitude() );
987 // Update radio stack model
988 current_radiostack->update(delta_time_sec);
992 void fgInitTimeDepCalcs( void ) {
997 static const double alt_adjust_ft = 3.758099;
998 static const double alt_adjust_m = alt_adjust_ft * SG_FEET_TO_METER;
1001 // What should we do when we have nothing else to do? Let's get ready
1002 // for the next move and update the display?
1003 static void fgMainLoop( void ) {
1005 static const SGPropertyNode *longitude
1006 = fgGetNode("/position/longitude-deg");
1007 static const SGPropertyNode *latitude
1008 = fgGetNode("/position/latitude-deg");
1009 static const SGPropertyNode *altitude
1010 = fgGetNode("/position/altitude-ft");
1011 static const SGPropertyNode *clock_freeze
1012 = fgGetNode("/sim/freeze/clock", true);
1013 static const SGPropertyNode *cur_time_override
1014 = fgGetNode("/sim/time/cur-time-override", true);
1016 // Update the elapsed time.
1017 static bool first_time = true;
1019 last_time_stamp.stamp();
1022 current_time_stamp.stamp();
1023 delta_time_sec = double(current_time_stamp - last_time_stamp) / 1000000.0;
1024 if (clock_freeze->getBoolValue())
1026 last_time_stamp = current_time_stamp;
1027 globals->inc_sim_time_sec( delta_time_sec );
1028 SGAnimation::set_sim_time_sec( globals->get_sim_time_sec() );
1030 static long remainder = 0;
1032 #ifdef FANCY_FRAME_COUNTER
1036 static time_t last_time = 0;
1037 static int frames = 0;
1038 #endif // FANCY_FRAME_COUNTER
1040 SGTime *t = globals->get_time_params();
1042 sglog().setLogLevels( SG_ALL, (sgDebugPriority)fgGetInt("/sim/log-level") );
1043 sglog().setLogLevels( SG_ALL, SG_INFO );
1045 SGLocation * acmodel_location = 0;
1046 if(cur_fdm_state->getACModel() != 0) {
1047 acmodel_location = (SGLocation *) cur_fdm_state->getACModel()->get3DModel()->getSGLocation();
1050 SG_LOG( SG_ALL, SG_DEBUG, "Running Main Loop");
1051 SG_LOG( SG_ALL, SG_DEBUG, "======= ==== ====");
1053 #ifdef FG_NETWORK_OLK
1054 if ( fgGetBool("/sim/networking/network-olk") ) {
1055 if ( net_is_registered == 0 ) { // We first have to reg. to fgd
1056 // printf("FGD: Netupdate\n");
1057 fgd_send_com( "A", FGFS_host); // Send Mat4 data
1058 fgd_send_com( "B", FGFS_host); // Recv Mat4 data
1063 #if defined( ENABLE_PLIB_JOYSTICK )
1064 // Read joystick and update control settings
1065 // if ( fgGetString("/sim/control-mode") == "joystick" )
1067 // fgJoystickRead();
1069 #elif defined( ENABLE_GLUT_JOYSTICK )
1070 // Glut joystick support works by feeding a joystick handler
1071 // function to glut. This is taken care of once in the joystick
1072 // init routine and we don't have to worry about it again.
1075 // Fix elevation. I'm just sticking this here for now, it should
1076 // probably move eventually
1078 /* printf("Before - ground = %.2f runway = %.2f alt = %.2f\n",
1079 scenery.get_cur_elev(),
1080 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
1081 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
1083 // Curt is this code used? I don't see any problems when I comment it out.
1084 if ( acmodel_location != 0 ) {
1085 if ( acmodel_location->get_cur_elev_m() > -9990 && cur_fdm_state->get_inited() ) {
1086 if ( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER <
1087 (acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0) ) {
1088 // now set aircraft altitude above ground
1089 printf("(*) Current Altitude = %.2f < %.2f forcing to %.2f\n",
1090 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
1091 acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0,
1092 acmodel_location->get_cur_elev_m() + alt_adjust_m );
1093 cur_fdm_state->set_Altitude( (acmodel_location->get_cur_elev_m()
1094 + alt_adjust_m) * SG_METER_TO_FEET );
1095 SG_LOG( SG_ALL, SG_DEBUG,
1096 "<*> resetting altitude to "
1097 << cur_fdm_state->get_Altitude() * SG_FEET_TO_METER
1102 // End of code in question. (see Curt is this code used? above)
1104 /* printf("Adjustment - ground = %.2f runway = %.2f alt = %.2f\n",
1105 scenery.get_cur_elev(),
1106 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
1107 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
1109 // cout << "Warp = " << globals->get_warp() << endl;
1112 static bool last_clock_freeze = false;
1114 if ( clock_freeze->getBoolValue() ) {
1115 // clock freeze requested
1116 if ( cur_time_override->getLongValue() == 0 ) {
1117 fgSetLong( "/sim/time/cur-time-override", t->get_cur_time() );
1118 globals->set_warp( 0 );
1121 // no clock freeze requested
1122 if ( last_clock_freeze == true ) {
1123 // clock just unfroze, let's set warp as the difference
1124 // between frozen time and current time so we don't get a
1125 // time jump (and corresponding sky object and lighting
1127 globals->set_warp( cur_time_override->getLongValue() - time(NULL) );
1128 fgSetLong( "/sim/time/cur-time-override", 0 );
1130 if ( globals->get_warp_delta() != 0 ) {
1131 globals->inc_warp( globals->get_warp_delta() );
1135 last_clock_freeze = clock_freeze->getBoolValue();
1137 t->update( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
1138 latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
1139 cur_time_override->getLongValue(),
1140 globals->get_warp() );
1142 if ( globals->get_warp_delta() != 0 ) {
1143 fgUpdateSkyAndLightingParams();
1146 // update magvar model
1147 globals->get_mag()->update( longitude->getDoubleValue()
1148 * SGD_DEGREES_TO_RADIANS,
1149 latitude->getDoubleValue()
1150 * SGD_DEGREES_TO_RADIANS,
1151 altitude->getDoubleValue() * SG_FEET_TO_METER,
1152 globals->get_time_params()->getJD() );
1154 // Get elapsed time (in usec) for this past frame
1155 elapsed = fgGetTimeInterval();
1156 SG_LOG( SG_ALL, SG_DEBUG,
1157 "Elapsed time interval is = " << elapsed
1158 << ", previous remainder is = " << remainder );
1160 // Calculate frame rate average
1161 #ifdef FANCY_FRAME_COUNTER
1162 /* old fps calculation */
1163 if ( elapsed > 0 ) {
1166 for ( i = FG_FRAME_RATE_HISTORY - 2; i >= 0; i-- ) {
1167 tmp = general.get_frame(i);
1169 // printf("frame[%d] = %.2f\n", i, g->frames[i]);
1170 general.set_frame(i+1,tmp);
1172 tmp = 1000000.0 / (float)elapsed;
1173 general.set_frame(0,tmp);
1174 // printf("frame[0] = %.2f\n", general.frames[0]);
1176 general.set_frame_rate(accum / (float)FG_FRAME_RATE_HISTORY);
1177 // printf("ave = %.2f\n", general.frame_rate);
1180 if ( (t->get_cur_time() != last_time) && (last_time > 0) ) {
1181 general.set_frame_rate( frames );
1182 fgSetInt("/sim/frame-rate", frames);
1183 SG_LOG( SG_ALL, SG_DEBUG,
1184 "--> Frame rate is = " << general.get_frame_rate() );
1187 last_time = t->get_cur_time();
1191 // Run ATC subsystem
1192 if (fgGetBool("/sim/ATC/enabled"))
1193 globals->get_ATC_mgr()->update(delta_time_sec);
1195 // Run the AI subsystem
1196 if (fgGetBool("/sim/ai-traffic/enabled"))
1197 globals->get_AI_mgr()->update(delta_time_sec);
1201 // Calculate model iterations needed for next frame
1202 elapsed += remainder;
1204 global_multi_loop = (long)(((double)elapsed * 0.000001) *
1205 fgGetInt("/sim/model-hz"));
1206 remainder = elapsed - ( (global_multi_loop*1000000) /
1207 fgGetInt("/sim/model-hz") );
1208 SG_LOG( SG_ALL, SG_DEBUG,
1209 "Model iterations needed = " << global_multi_loop
1210 << ", new remainder = " << remainder );
1212 // chop max interations to something reasonable if the sim was
1213 // delayed for an excesive amount of time
1214 if ( global_multi_loop > 2.0 * fgGetInt("/sim/model-hz") ) {
1215 global_multi_loop = (int)(2.0 * fgGetInt("/sim/model-hz") );
1220 if ( global_multi_loop > 0 ) {
1221 fgUpdateTimeDepCalcs();
1223 SG_LOG( SG_ALL, SG_DEBUG,
1224 "Elapsed time is zero ... we're zinging" );
1227 // Do any I/O channel work that might need to be done
1228 globals->get_io()->update( delta_time_sec );
1230 // see if we need to load any deferred-load textures
1231 material_lib.load_next_deferred();
1233 // Run audio scheduler
1234 #ifdef ENABLE_AUDIO_SUPPORT
1235 if ( fgGetBool("/sim/sound/audible")
1236 && globals->get_soundmgr()->is_working() ) {
1237 globals->get_soundmgr()->update( delta_time_sec );
1241 globals->get_subsystem_mgr()->update(delta_time_sec);
1244 // Tile Manager updates - see if we need to load any new scenery tiles.
1245 // this code ties together the fdm, viewer and scenery classes...
1246 // we may want to move this to it's own class at some point
1248 double visibility_meters = fgGetDouble("/environment/visibility-m");
1249 FGViewer *current_view = globals->get_current_view();
1251 // update tile manager for FDM...
1252 // ...only if location is different than the viewer (to avoid duplicating effort)
1253 if( acmodel_location != current_view->getSGLocation() ) {
1254 if( acmodel_location != 0 ) {
1255 globals->get_tile_mgr()->prep_ssg_nodes( acmodel_location,
1256 visibility_meters );
1257 globals->get_tile_mgr()->
1258 update( acmodel_location, visibility_meters,
1259 acmodel_location->get_absolute_view_pos(globals->get_scenery()->get_center()) );
1260 // save results of update in SGLocation for fdm...
1261 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1263 set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1266 set_tile_center( globals->get_scenery()->get_next_center() );
1270 globals->get_tile_mgr()->prep_ssg_nodes( current_view->getSGLocation(),
1271 visibility_meters );
1272 // update tile manager for view...
1273 // IMPORTANT!!! the tilemgr update for view location _must_ be done last
1274 // after the FDM's until all of Flight Gear code references the viewer's location
1275 // for elevation instead of the "scenery's" current elevation.
1276 SGLocation *view_location = globals->get_current_view()->getSGLocation();
1277 globals->get_tile_mgr()->update( view_location, visibility_meters,
1278 current_view->get_absolute_view_pos() );
1279 // save results of update in SGLocation for fdm...
1280 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1281 current_view->getSGLocation()->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1283 current_view->getSGLocation()->set_tile_center( globals->get_scenery()->get_next_center() );
1285 // If fdm location is same as viewer's then we didn't do the update for fdm location
1286 // above so we need to save the viewer results in the fdm SGLocation as well...
1287 if( acmodel_location == current_view->getSGLocation() ) {
1288 if( acmodel_location != 0 ) {
1289 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1290 acmodel_location->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1292 acmodel_location->set_tile_center( globals->get_scenery()->get_next_center() );
1296 // END Tile Manager udpates
1301 SG_LOG( SG_ALL, SG_DEBUG, "" );
1305 // This is the top level master main function that is registered as
1306 // our idle funciton
1308 // The first few passes take care of initialization things (a couple
1309 // per pass) and once everything has been initialized fgMainLoop from
1312 static void fgIdleFunction ( void ) {
1313 // printf("idle state == %d\n", idle_state);
1315 if ( idle_state == 0 ) {
1316 // Initialize the splash screen right away
1317 if ( fgGetBool("/sim/startup/splash-screen") ) {
1322 } else if ( idle_state == 1 ) {
1323 // Initialize audio support
1324 #ifdef ENABLE_AUDIO_SUPPORT
1326 // Start the intro music
1327 if ( fgGetBool("/sim/startup/intro-music") ) {
1328 SGPath mp3file( globals->get_fg_root() );
1329 mp3file.append( "Sounds/intro.mp3" );
1331 SG_LOG( SG_GENERAL, SG_INFO,
1332 "Starting intro music: " << mp3file.str() );
1334 #if defined( __CYGWIN__ )
1335 string command = "start /m `cygpath -w " + mp3file.str() + "`";
1336 #elif defined( WIN32 )
1337 string command = "start /m " + mp3file.str();
1339 string command = "mpg123 " + mp3file.str() + "> /dev/null 2>&1";
1342 system ( command.c_str() );
1347 } else if ( idle_state == 2 ) {
1348 // These are a few miscellaneous things that aren't really
1349 // "subsystems" but still need to be initialized.
1352 if ( strstr ( general.get_glRenderer(), "Glide" ) ) {
1353 grTexLodBiasValue ( GR_TMU0, 1.0 ) ;
1358 } else if ( idle_state == 3 ) {
1359 // This is the top level init routine which calls all the
1360 // other subsystem initialization routines. If you are adding
1361 // a subsystem to flightgear, its initialization call should
1362 // located in this routine.
1363 if( !fgInitSubsystems()) {
1364 SG_LOG( SG_GENERAL, SG_ALERT,
1365 "Subsystem initializations failed ..." );
1370 } else if ( idle_state == 4 ) {
1371 // setup OpenGL view parameters
1374 // Read the list of available aircrafts
1378 } else if ( idle_state == 5 ) {
1381 } else if ( idle_state == 6 ) {
1385 SG_LOG( SG_GENERAL, SG_INFO, "Panel visible = " << fgPanelVisible() );
1386 fgReshape( fgGetInt("/sim/startup/xsize"),
1387 fgGetInt("/sim/startup/ysize") );
1390 if ( idle_state == 1000 ) {
1391 // We've finished all our initialization steps, from now on we
1392 // run the main loop.
1394 glutIdleFunc(fgMainLoop);
1396 if ( fgGetBool("/sim/startup/splash-screen") ) {
1397 fgSplashUpdate(0.0, 1.0);
1402 // options.cxx needs to see this for toggle_panel()
1403 // Handle new window size or exposure
1404 void fgReshape( int width, int height ) {
1407 if ( (!fgGetBool("/sim/virtual-cockpit"))
1408 && fgPanelVisible() && idle_state == 1000 ) {
1409 view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
1410 globals->get_current_panel()->getYOffset()) / 768.0);
1416 FGViewMgr *viewmgr = globals->get_viewmgr();
1417 for ( int i = 0; i < viewmgr->size(); ++i ) {
1418 viewmgr->get_view(i)->
1419 set_aspect_ratio((float)view_h / (float)width);
1422 glViewport( 0, (GLint)(height - view_h), (GLint)(width), (GLint)(view_h) );
1424 fgSetInt("/sim/startup/xsize", width);
1425 fgSetInt("/sim/startup/ysize", height);
1426 guiInitMouse(width, height);
1428 ssgSetFOV( viewmgr->get_current_view()->get_h_fov(),
1429 viewmgr->get_current_view()->get_v_fov() );
1433 #ifdef FG_USE_CLOUDS_3D
1434 sgClouds3d->Resize( viewmgr->get_current_view()->get_h_fov(),
1435 viewmgr->get_current_view()->get_v_fov() );
1440 // Initialize GLUT and define a main window
1441 static bool fgGlutInit( int *argc, char **argv ) {
1443 #if !defined( macintosh )
1444 // GLUT will extract all glut specific options so later on we only
1445 // need wory about our own.
1446 glutInit(argc, argv);
1449 // Define Display Parameters. Clouds3d works best with --bpp32 option
1450 if ( fgGetBool("/sim/rendering/clouds3d") ) {
1451 glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_ALPHA );
1453 glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
1456 SG_LOG( SG_GENERAL, SG_INFO, "Opening a window: " <<
1457 fgGetInt("/sim/startup/xsize") << "x"
1458 << fgGetInt("/sim/startup/ysize") );
1460 // Define initial window size
1461 glutInitWindowSize( fgGetInt("/sim/startup/xsize"),
1462 fgGetInt("/sim/startup/ysize") );
1464 // Initialize windows
1465 if ( !fgGetBool("/sim/startup/game-mode")) {
1466 // Open the regular window
1467 glutCreateWindow("FlightGear");
1468 #ifndef GLUT_WRONG_VERSION
1470 // Open the cool new 'game mode' window
1471 char game_mode_str[256];
1472 //#define SYNC_OPENGL_WITH_DESKTOP_SETTINGS
1473 #if defined(WIN32) && defined(SYNC_OPENGL_WITH_DESKTOP_SETTINGS)
1474 #ifndef ENUM_CURRENT_SETTINGS
1475 #define ENUM_CURRENT_SETTINGS ((DWORD)-1)
1476 #define ENUM_REGISTRY_SETTINGS ((DWORD)-2)
1480 dm.dmSize = sizeof(DEVMODE);
1481 EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm);
1482 fgSetInt("/sim/startup/xsize", dm.dmPelsWidth);
1483 fgSetInt("/sim/startup/ysize", dm.dmPelsHeight);
1484 glutInitWindowSize( fgGetInt("/sim/startup/xsize"),
1485 fgGetInt("/sim/startup/ysize") );
1486 sprintf( game_mode_str, "%dx%d:%d@%d",
1490 dm.dmDisplayFrequency );
1492 // Open the cool new 'game mode' window
1493 sprintf( game_mode_str, "width=%d height=%d bpp=%d",
1494 fgGetInt("/sim/startup/xsize"),
1495 fgGetInt("/sim/startup/ysize"),
1496 fgGetInt("/sim/rendering/bits-per-pixel"));
1498 #endif // HAVE_WINDOWS_H
1499 SG_LOG( SG_GENERAL, SG_INFO,
1500 "game mode params = " << game_mode_str );
1501 glutGameModeString( game_mode_str );
1502 glutEnterGameMode();
1503 #endif // GLUT_WRONG_VERSION
1506 // This seems to be the absolute earliest in the init sequence
1507 // that these calls will return valid info. Too bad it's after
1508 // we've already created and sized out window. :-(
1509 general.set_glVendor( (char *)glGetString ( GL_VENDOR ) );
1510 general.set_glRenderer( (char *)glGetString ( GL_RENDERER ) );
1511 general.set_glVersion( (char *)glGetString ( GL_VERSION ) );
1512 SG_LOG( SG_GENERAL, SG_INFO, general.get_glRenderer() );
1515 glGetIntegerv( GL_MAX_TEXTURE_SIZE, &tmp );
1516 general.set_glMaxTexSize( tmp );
1517 SG_LOG ( SG_GENERAL, SG_INFO, "Max texture size = " << tmp );
1519 glGetIntegerv( GL_DEPTH_BITS, &tmp );
1520 general.set_glDepthBits( tmp );
1521 SG_LOG ( SG_GENERAL, SG_INFO, "Depth buffer bits = " << tmp );
1527 // Initialize GLUT event handlers
1528 static bool fgGlutInitEvents( void ) {
1529 // call fgReshape() on window resizes
1530 glutReshapeFunc( fgReshape );
1532 // keyboard and mouse callbacks are set in FGInput::init
1534 // call fgMainLoop() whenever there is
1535 // nothing else to do
1536 glutIdleFunc( fgIdleFunction );
1539 glutDisplayFunc( fgRenderFrame );
1544 // Main top level initialization
1545 static bool fgMainInit( int argc, char **argv ) {
1547 #if defined( macintosh )
1548 freopen ("stdout.txt", "w", stdout );
1549 freopen ("stderr.txt", "w", stderr );
1550 argc = ccommand( &argv );
1553 // set default log levels
1554 sglog().setLogLevels( SG_ALL, SG_INFO );
1557 #ifdef FLIGHTGEAR_VERSION
1558 version = FLIGHTGEAR_VERSION;
1560 version = "unknown version";
1562 SG_LOG( SG_GENERAL, SG_INFO, "FlightGear: Version "
1564 SG_LOG( SG_GENERAL, SG_INFO, "Built with " << SG_COMPILER_STR << endl );
1566 // Allocate global data structures. This needs to happen before
1567 // we parse command line options
1569 globals = new FGGlobals;
1571 #ifndef FG_WEATHERCM
1572 globals->set_environment_mgr(new FGEnvironmentMgr);
1575 // seed the random number generater
1578 SGRoute *route = new SGRoute;
1579 globals->set_route( route );
1581 FGControls *controls = new FGControls;
1582 globals->set_controls( controls );
1584 string_list *col = new string_list;
1585 globals->set_channel_options_list( col );
1587 // Scan the config file(s) and command line options to see if
1588 // fg_root was specified (ignore all other options for now)
1589 fgInitFGRoot(argc, argv);
1591 // Check for the correct base package version
1592 static char required_version[] = "0.9.1";
1593 string base_version = fgBasePackageVersion();
1594 if ( !(base_version == required_version) ) {
1595 // tell the operator how to use this application
1597 cerr << endl << "Base package check failed ... " \
1598 << "Found version " << base_version << " at: " \
1599 << globals->get_fg_root() << endl;
1600 cerr << "Please upgrade to version: " << required_version << endl;
1604 // Initialize the Aircraft directory to "" (UIUC)
1607 // Load the configuration parameters. (Command line options
1608 // overrides config file options. Config file options override
1610 if ( !fgInitConfig(argc, argv) ) {
1611 SG_LOG( SG_GENERAL, SG_ALERT, "Config option parsing failed ..." );
1615 // Initialize the Window/Graphics environment.
1616 if( !fgGlutInit(&argc, argv) ) {
1617 SG_LOG( SG_GENERAL, SG_ALERT, "GLUT initialization failed ..." );
1621 // Initialize the various GLUT Event Handlers.
1622 if( !fgGlutInitEvents() ) {
1623 SG_LOG( SG_GENERAL, SG_ALERT,
1624 "GLUT event handler initialization failed ..." );
1628 // Initialize plib net interface
1629 netInit( &argc, argv );
1631 // Initialize ssg (from plib). Needs to come before we do any
1632 // other ssg stuff, but after opengl/glut has been initialized.
1635 // Initialize the user interface (we need to do this before
1636 // passing off control to glut and before fgInitGeneral to get our
1640 // Read the list of available aircrafts
1643 #ifdef GL_EXT_texture_lod_bias
1644 glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, -0.5 ) ;
1647 #ifdef FG_EXPERIMENTAL_POINT_LIGHTING
1648 // get the address of our OpenGL extensions
1649 if ( fgGetBool("/sim/rendering/distance-attenuation") )
1652 glPointParameterfEXT = (PFNGLPOINTPARAMETERFEXTPROC)
1653 wglGetProcAddress("glPointParameterfEXT");
1654 glPointParameterfvEXT = (PFNGLPOINTPARAMETERFVEXTPROC)
1655 wglGetProcAddress("glPointParameterfvEXT");
1657 glPointParameterfEXT = (OpenGLFuncExt)
1658 glXGetProcAddressARB((GLubyte *)"glPointParameterfEXT");
1659 glPointParameterfvEXT = (OpenGLFuncExtv)
1660 glXGetProcAddressARB((GLubyte *)"glPointParameterfvEXT");
1665 // based on the requested presets, calculate the true starting
1670 SGTime *t = fgInitTime();
1671 globals->set_time_params( t );
1673 // Do some quick general initializations
1674 if( !fgInitGeneral()) {
1675 SG_LOG( SG_GENERAL, SG_ALERT,
1676 "General initializations failed ..." );
1680 SGPath modelpath( globals->get_fg_root() );
1681 ssgModelPath( (char *)modelpath.c_str() );
1683 // Initialize the global scenery manager
1684 globals->set_scenery( new FGScenery );
1685 globals->get_scenery()->init();
1686 globals->get_scenery()->bind();
1688 // Initialize the global tile manager
1689 globals->set_tile_mgr( new FGTileMgr );
1691 ////////////////////////////////////////////////////////////////////
1692 // Initialize the property-based built-in commands
1693 ////////////////////////////////////////////////////////////////////
1696 ////////////////////////////////////////////////////////////////////
1697 // Initialize the general model subsystem.
1698 ////////////////////////////////////////////////////////////////////
1700 globals->set_model_loader(new SGModelLoader);
1701 globals->set_model_mgr(new FGModelMgr);
1702 globals->get_model_mgr()->init();
1703 globals->get_model_mgr()->bind();
1705 ////////////////////////////////////////////////////////////////////
1706 // Initialize the 3D aircraft model subsystem.
1707 ////////////////////////////////////////////////////////////////////
1709 globals->set_aircraft_model(new FGAircraftModel);
1710 globals->get_aircraft_model()->init();
1711 globals->get_aircraft_model()->bind();
1713 ////////////////////////////////////////////////////////////////////
1714 // Initialize the view manager subsystem.
1715 ////////////////////////////////////////////////////////////////////
1717 FGViewMgr *viewmgr = new FGViewMgr;
1718 globals->set_viewmgr( viewmgr );
1723 // Initialize the sky
1724 SGPath ephem_data_path( globals->get_fg_root() );
1725 ephem_data_path.append( "Astro" );
1726 SGEphemeris *ephem = new SGEphemeris( ephem_data_path.c_str() );
1727 ephem->update( globals->get_time_params()->getMjd(),
1728 globals->get_time_params()->getLst(),
1730 globals->set_ephem( ephem );
1732 // TODO: move to environment mgr
1734 SGPath texture_path(globals->get_fg_root());
1735 texture_path.append("Textures");
1736 texture_path.append("Sky");
1737 for (int i = 0; i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) {
1738 SGCloudLayer * layer = new SGCloudLayer(texture_path.str());
1739 thesky->add_cloud_layer(layer);
1743 SGPath sky_tex_path( globals->get_fg_root() );
1744 sky_tex_path.append( "Textures" );
1745 sky_tex_path.append( "Sky" );
1746 thesky->texture_path( sky_tex_path.str() );
1748 thesky->build( 550.0, 550.0,
1749 globals->get_ephem()->getNumPlanets(),
1750 globals->get_ephem()->getPlanets(), 60000.0,
1751 globals->get_ephem()->getNumStars(),
1752 globals->get_ephem()->getStars(), 60000.0 );
1754 // Initialize MagVar model
1755 SGMagVar *magvar = new SGMagVar();
1756 globals->set_mag( magvar );
1758 // airport = new ssgBranch;
1759 // airport->setName( "Airport Lighting" );
1760 // lighting->addKid( airport );
1766 #ifdef FG_NETWORK_OLK
1767 // Do the network intialization
1768 if ( fgGetBool("/sim/networking/network-olk") ) {
1769 printf("Multipilot mode %s\n",
1770 fg_net_init( globals->get_scenery()->get_scene_graph() ) );
1774 // build our custom render states
1775 fgBuildRenderStates();
1777 // pass control off to the master GLUT event handler
1780 // we never actually get here ... but to avoid compiler warnings,
1786 // $$$ end - added VS Renganathan, 15 Oct 2K
1787 // - added Venky , 12 Nov 2K
1789 #if defined(__linux__) && defined(__i386__)
1791 static void handleFPE (int);
1796 fpu_control_t fpe_flags = 0;
1797 _FPU_GETCW(fpe_flags);
1798 // fpe_flags &= ~_FPU_MASK_IM; // invalid operation
1799 // fpe_flags &= ~_FPU_MASK_DM; // denormalized operand
1800 // fpe_flags &= ~_FPU_MASK_ZM; // zero-divide
1801 // fpe_flags &= ~_FPU_MASK_OM; // overflow
1802 // fpe_flags &= ~_FPU_MASK_UM; // underflow
1803 // fpe_flags &= ~_FPU_MASK_PM; // precision (inexact result)
1804 _FPU_SETCW(fpe_flags);
1805 signal(SIGFPE, handleFPE);
1812 SG_LOG(SG_GENERAL, SG_ALERT, "Floating point interrupt (SIGFPE)");
1825 short CPSGetCurrentProcess(PSN *psn);
1826 short CPSSetProcessName (PSN *psn, char *processname);
1827 short CPSEnableForegroundOperation(PSN *psn, int _arg2, int _arg3, int _arg4, int _arg5);
1828 short CPSSetFrontProcess(PSN *psn);
1831 #define CPSEnableFG(psn) CPSEnableForegroundOperation(psn,0x03,0x3C,0x2C,0x1103)
1835 // Main entry point; catch any exceptions that have made it this far.
1836 int main ( int argc, char **argv ) {
1838 // Enable floating-point exceptions for Linux/x86
1839 #if defined(__linux__) && defined(__i386__)
1843 // Enable floating-point exceptions for Windows
1844 #if defined( _MSC_VER ) && defined( DEBUG )
1845 // Christian, we should document what this does
1846 _control87( _EM_INEXACT, _MCW_EM );
1849 #if defined( HAVE_BC5PLUS )
1850 _control87(MCW_EM, MCW_EM); /* defined in float.h */
1853 // Keyboard focus hack
1858 glutInit (&argc, argv);
1860 CPSGetCurrentProcess(&psn);
1861 CPSSetProcessName(&psn, "FlightGear");
1863 CPSSetFrontProcess(&psn);
1867 // FIXME: add other, more specific
1870 fgMainInit(argc, argv);
1871 } catch (sg_throwable &t) {
1872 // We must use cerr rather than
1873 // logging, since logging may be
1875 cerr << "Fatal error: " << t.getFormattedMessage()
1876 << "\n (received from " << t.getOrigin() << ')' << endl;
1884 void fgLoadDCS(void) {
1886 ssgEntity *ship_obj = NULL;
1888 char obj_filename[25];
1890 for ( int k = 0; k < 32; k++ ) {
1894 SGPath tile_path( globals->get_fg_root());
1895 tile_path.append( "Scenery" );
1896 tile_path.append( "Objects.txt" );
1897 sg_gzifstream in( tile_path.str() );
1898 if ( ! in.is_open() ) {
1899 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << tile_path.str() );
1902 SGPath modelpath( globals->get_fg_root() );
1903 modelpath.append( "Models" );
1904 modelpath.append( "Geometry" );
1906 SGPath texturepath( globals->get_fg_root() );
1907 texturepath.append( "Models" );
1908 texturepath.append( "Textures" );
1910 ssgModelPath( (char *)modelpath.c_str() );
1911 ssgTexturePath( (char *)texturepath.c_str() );
1913 ship_sel = new ssgSelector;
1916 while ( ! in.eof() ) {
1918 if ( in.get( c ) && c == '#' ) {
1922 in >> obj_filename >> obj_lat[objc] >> obj_lon[objc] >> obj_alt[objc];
1923 /* cout << endl << obj_filename << " " << obj_lat[objc] << " " << obj_lon[objc] << " " << obj_alt[objc] << endl;
1924 int chj=getchar();*/
1926 obj_lon[objc] *=SGD_DEGREES_TO_RADIANS;
1927 obj_lat[objc] *=SGD_DEGREES_TO_RADIANS;
1929 ship_pos[objc] = new ssgTransform;
1931 // type "repeat" in objects.txt to load one more
1932 // instance of the last object.
1934 if ( strcmp(obj_filename,"repeat") != 0) {
1936 globals->get_model_loader()->load_model( globals->get_fg_root(), obj_filename, globals->get_props(), globals->get_sim_time_sec() );
1939 if ( ship_obj != NULL ) {
1940 ship_obj->setName(obj_filename);
1942 ship_obj->clrTraversalMaskBits( SSGTRAV_HOT );
1944 ship_obj->setTraversalMaskBits( SSGTRAV_HOT );
1945 ship_pos[objc]->addKid( ship_obj ); // add object to transform node
1946 ship_sel->addKid( ship_pos[objc] ); // add transform node to selector
1947 SG_LOG( SG_TERRAIN, SG_ALERT, "Loaded file: "
1950 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: "
1954 // temporary hack for deck lights - ultimately should move to PLib (when??)
1955 //const char *extn = file_extension ( obj_filename ) ;
1957 // ssgVertexArray *lights = new ssgVertexArray( 100 );
1958 ssgVertexArray *lightpoints = new ssgVertexArray( 100 );
1959 ssgVertexArray *lightnormals = new ssgVertexArray( 100 );
1960 ssgVertexArray *lightdir = new ssgVertexArray( 100 );
1961 int ltype[500], light_type = 0;
1962 static int ltcount = 0;
1964 sgVec3 rway_dir,rway_normal,lightpt;
1966 modelpath.append(obj_filename);
1967 sg_gzifstream in1( modelpath.str() );
1968 if ( ! in1.is_open() ) {
1969 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << modelpath.str() );
1971 while ( ! in1.eof() ) {
1973 if ( in1.get( c ) && c == '#' ) {
1978 //cout << token << endl;
1979 if ( token == "runway" ) {
1981 sgSetVec3 (rway_dir, node[0], node[1], node[2] );
1982 } else if ( token == "edgelight" ) {
1984 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
1986 } else if ( token == "taxi" ) {
1988 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
1990 } else if ( token == "vasi" ) {
1992 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
1994 } else if ( token == "threshold" ) {
1996 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
1998 } else if ( token == "rabbit" ) {
2000 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2002 } else if ( token == "ols" ) {
2004 sgSetVec3 (rway_ols, node[0], node[1], node[2] );
2006 } else if ( token == "red" ) {
2008 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2010 } else if ( token == "green" ) {
2012 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2014 } else if ( token == "lp" ) {
2016 sgSetVec3 (lightpt, node[0], node[1], node[2] );
2017 lightpoints->add( lightpt );
2018 lightnormals->add( rway_normal );
2019 lightdir->add( rway_dir );
2020 ltype[ltcount]= light_type;
2023 if (in1.eof()) break;
2028 if ( lightpoints->getNum() ) {
2029 ssgBranch *lightpoints_branch;
2030 long int dummy = -999;
2031 dummy_tile = new FGTileEntry((SGBucket)dummy);
2032 dummy_tile->lightmaps_sequence = new ssgSelector;
2033 dummy_tile->ols_transform = new ssgTransform;
2035 // call function to generate the runway lights
2036 lightpoints_branch =
2037 dummy_tile->gen_runway_lights( lightpoints, lightnormals,
2039 lightpoints_brightness->addKid(lightpoints_branch);
2040 lightpoints_transform->addKid(lightpoints_brightness);
2041 //dummy_tile->lightmaps_sequence->setTraversalMaskBits( SSGTRAV_HOT );
2042 lightpoints_transform->addKid( dummy_tile->lightmaps_sequence );
2043 lightpoints_transform->ref();
2044 globals->get_scenery()->get_gnd_lights_root()->addKid( lightpoints_transform );
2049 // end hack for deck lights
2053 if (in.eof()) break;
2057 SG_LOG ( SG_TERRAIN, SG_ALERT, "Finished object processing." );
2059 globals->get_scenery()->get_terrain_branch()->addKid( ship_sel ); //add selector node to root node
2066 void fgUpdateDCS (void) {
2068 // double eye_lat,eye_lon,eye_alt;
2069 // static double obj_head;
2070 double sl_radius,obj_latgc;
2071 // float nresultmat[4][4];
2072 // sgMat4 Trans,rothead,rotlon,rot180,rotlat,resultmat1,resultmat2,resultmat3;
2075 // Instantaneous Geodetic Lat/Lon/Alt of moving object
2076 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
2078 // Deck should be the first object in objects.txt in case of fdm=ada
2080 if (!strcmp(fgGetString("/sim/flight-model"), "ada")) {
2081 if ((fdm->get_iaux(1))==1)
2083 obj_lat[1] = fdm->get_daux(1)*SGD_DEGREES_TO_RADIANS;
2084 obj_lon[1] = fdm->get_daux(2)*SGD_DEGREES_TO_RADIANS;
2085 obj_alt[1] = fdm->get_daux(3);
2086 obj_pitch[1] = fdm->get_faux(1);
2087 obj_roll[1] = fdm->get_faux(2);
2091 for ( int m = 0; m < objc; m++ ) {
2092 //cout << endl << obj_lat[m]*SGD_RADIANS_TO_DEGREES << " " << obj_lon[m]*SGD_RADIANS_TO_DEGREES << " " << obj_alt[m] << " " << objc << endl;
2095 //Geodetic to Geocentric angles for rotation
2096 sgGeodToGeoc(obj_lat[m],obj_alt[m],&sl_radius,&obj_latgc);
2098 //moving object gbs-posn in cartesian coords
2099 Point3D obj_posn = Point3D( obj_lon[m],obj_lat[m],obj_alt[m]);
2100 Point3D obj_pos = sgGeodToCart( obj_posn );
2102 // Translate moving object w.r.t eye
2103 Point3D Objtrans = obj_pos - globals->get_scenery()->get_center();
2108 // rotate dynamic objects for lat,lon & alt and other motion about its axes
2111 sgMakeTransMat4( sgTRANS, bz[0],bz[1],bz[2]);
2113 sgVec3 ship_fwd,ship_rt,ship_up;
2114 sgSetVec3( ship_fwd, 1.0, 0.0, 0.0);//east,roll
2115 sgSetVec3( ship_rt, 0.0, 1.0, 0.0);//up,pitch
2116 sgSetVec3( ship_up, 0.0, 0.0, 1.0); //north,yaw
2118 sgMat4 sgROT_lon, sgROT_lat, sgROT_hdg, sgROT_pitch, sgROT_roll;
2119 sgMakeRotMat4( sgROT_lon, obj_lon[m]*SGD_RADIANS_TO_DEGREES, ship_up );
2120 sgMakeRotMat4( sgROT_lat, 90-obj_latgc*SGD_RADIANS_TO_DEGREES, ship_rt );
2121 sgMakeRotMat4( sgROT_hdg, 180.0, ship_up );
2122 sgMakeRotMat4( sgROT_pitch, obj_pitch[m], ship_rt );
2123 sgMakeRotMat4( sgROT_roll, obj_roll[m], ship_fwd );
2126 sgCopyMat4( sgTUX, sgROT_hdg );
2127 sgPostMultMat4( sgTUX, sgROT_pitch );
2128 sgPostMultMat4( sgTUX, sgROT_roll );
2129 sgPostMultMat4( sgTUX, sgROT_lat );
2130 sgPostMultMat4( sgTUX, sgROT_lon );
2131 sgPostMultMat4( sgTUX, sgTRANS );
2134 sgSetCoord(&shippos, sgTUX );
2135 ship_pos[m]->setTransform( &shippos );
2136 // temporary hack for deck lights - ultimately should move to PLib (when ??)
2138 if (lightpoints_transform) {
2139 lightpoints_transform->setTransform( &shippos );
2140 float sun_angle = cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES;
2141 if ( sun_angle > 89 ) {
2142 lightpoints_brightness->select(0x01);
2144 lightpoints_brightness->select(0x00);
2153 sgXformPnt3( rp, rway_ols, sgTUX );
2154 vp = globals->get_current_view()->get_view_pos();
2155 to[0] = rp[0]-vp[0];
2156 to[1] = rp[1]-vp[1];
2157 to[2] = rp[2]-vp[2];
2158 float dist = sgLengthVec3( to );
2159 alt = (current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER)-rway_ols[2];
2161 elev = asin(alt/dist)*SGD_RADIANS_TO_DEGREES;
2163 ref_elev = elev - 3.75; // +ve above, -ve below
2167 // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
2168 // if (ref_elev > 0.51) sel = 0x21;
2169 // if ((ref_elev <= 0.51) & (ref_elev > 0.17)) sel = 0x22;
2170 // if ((ref_elev <= 0.17) & (ref_elev >= -0.17)) sel = 0x24;
2171 // if ((ref_elev < -0.17) & (ref_elev >= -0.51)) sel = 0x28;
2172 // if (ref_elev < -0.51) sel = 0x30;
2173 // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
2174 // dummy_tile->lightmaps_sequence->select(sel);
2177 sgCopyVec3 (up, ship_up);
2179 sgScaleVec3 (up, 4.0*ref_elev*dist/750.0);
2181 sgScaleVec3 (up, 4.0*ref_elev);
2182 // dummy_tile->ols_transform->setTransform(up);
2183 //cout << "ref_elev " << ref_elev << endl;
2185 // end hack for deck lights
2188 if ( ship_sel != NULL ) {
2189 ship_sel->select(0xFFFFFFFE); // first object is ownship, added to acmodel
2193 // $$$ end - added VS Renganathan, 15 Oct 2K
2194 // added Venky , 12 Nov 2K