-/**************************************************************************
- * GLUTmain.c -- top level sim routines
- *
- * Written by Curtis Olson for OpenGL, started May 1997.
- *
- * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id$
- * (Log is kept at end of this file)
- **************************************************************************/
-
-
-#include <config.h>
-
-#ifdef HAVE_WINDOWS_H
-# include <windows.h>
-#endif
-
-#include <GL/glut.h>
-#include <XGL/xgl.h>
-#include <stdio.h>
-
-#ifdef HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
-#ifdef HAVE_GETOPT_H
-# include <getopt.h>
-#endif
-
-#include <Debug/fg_debug.h>
-#include <Main/GLUTkey.h>
-#include <Main/fg_init.h>
-#include <Main/fg_getopt.h>
-#include <Main/views.h>
-
-#include <Include/cmdargs.h> // Line to command line arguments
-#include <Include/fg_constants.h> // for VERSION
-#include <Include/general.h>
-
-#include <Aircraft/aircraft.h>
-#include <Astro/moon.h>
-#include <Astro/planets.h>
-#include <Astro/sky.h>
-#include <Astro/stars.h>
-#include <Astro/sun.h>
-#include <Autopilot/autopilot.h>
-#include <Cockpit/cockpit.h>
-#include <Joystick/joystick.h>
-#include <Math/fg_geodesy.h>
-#include <Math/mat3.h>
-#include <Math/polar.h>
-#include <Scenery/scenery.h>
-#include <Scenery/tilemgr.h>
-#include <Time/event.h>
-#include <Time/fg_time.h>
-#include <Time/fg_timer.h>
-#include <Time/sunpos.h>
-#include <Weather/weather.h>
-
-
-/* This is a record containing global housekeeping information */
-fgGENERAL general;
-
-/* view parameters */
-static GLfloat win_ratio = 1.0;
-static GLint winWidth, winHeight;
-
-/* temporary hack */
-/* pointer to scenery structure */
-/* static GLint scenery, runway; */
-
-/* double Simtime; */
-
-/* Another hack */
-int use_signals = 0;
-
-/* Yet another hack. This one used by the HUD code. Michele */
-int show_hud;
-
-/* Yet another other hack. Used for my prototype instrument code. (Durk) */
-int displayInstruments;
-
-// The following defines flight gear options. Because glutlib will also
-// want to parse its own options, those options must not be included here
-// or they will get parsed by the main program option parser. Hence case
-// is significant for any option added that might be in conflict with
-// glutlib's parser.
-//
-// glutlib parses for:
-// -display
-// -direct (invalid in Win32)
-// -geometry
-// -gldebug
-// -iconized
-// -indirect (invalid in Win32)
-// -synce
-//
-// Note that glutlib depends upon strings while this program's
-// option parser wants only initial characters followed by numbers
-// or pathnames.
-//
-const char *fg_cmdargopts = "a:c:Hhp:r:v:x:?";
-//
-// Where
-// -a aircraftfilename aircraft start over ride
-// -c0x0000 - 0xffffffff debug class setting
-// H,h.? help on command line use (does not need Option struct)
-// -p priority
-// -r flightgear root path to program support files
-// -v0 -v1 initial view mode (hud/no_hud currently)
-// -xlogpathname debug logfile name
-//
-// Defaults in arguments to indicate not set on command line.
-// Program defaults set variables from constants if neither command
-// options or environmental variables effect values.
-//
-
-char acArgbuf [ MAXPATH + 1] = "\0";
-int debugArgValue = -2;
-int priorityArgValue = -1;
-char rootArgbuf [ MAXPATH + 1] = "\0";
-int viewArg = -1;
-char logArgbuf [ MAXPATH + 1] = "\0";
-
-// There is a reason for defining the option structs by name and then
-// creating an array of pointers to options. C++ is unfriendly to
-// initializing arrays of objects that are not built in types. Always
-// look forward. (Besides, you can follow what is going on better and
-// add or modify with greater security. -ch
-//
-Option aircraftOption = { 'a',
- OPT_STRING,
- acArgbuf,
- "Startup aircraft pathname override"
- };
-Option debugOption = { 'c',
- OPT_LHEX, // Long int (32 bits)
- &debugArgValue,
- "Debug trace level"
- };
-Option priorityOption = { 'p',
- OPT_INTEGER,
- &priorityArgValue,
- "Debug priority Threshold"
- };
-Option rootOption = { 'r',
- OPT_STRING,
- rootArgbuf,
- "Root directory for execution"
- };
-Option hudOption = { 'v',
- OPT_INTEGER,
- &viewArg,
- "View mode start" // Naked,HUD,Panel,Chase,Tower...
- };
-//
-// Only naked view and HUD are implemented at this time
-//
-Option logfileOption = { 'x',
- OPT_STRING,
- logArgbuf,
- "Debug log file name"
- };
-
-//
-#define OptsDefined 6
-Option *CmdLineOptions[ OptsDefined ] = {
- &aircraftOption,
- &debugOption,
- &hudOption,
- &priorityOption,
- &rootOption,
- &logfileOption
- };
-
-const char *DefaultRootDir = "\\Flightgear";
-const char *DefaultAircraft = "Navion.acf";
-const char *DefaultDebuglog = "fgdebug.log";
-const int DefaultViewMode = HUD_VIEW;
-//
-// Debug defaults handled in fg_debug.c
-//
-/**************************************************************************
- * fgInitVisuals() -- Initialize various GL/view parameters
- **************************************************************************/
-
-static void fgInitVisuals( void ) {
- struct fgLIGHT *l;
- struct fgWEATHER *w;
-
- l = &cur_light_params;
- w = ¤t_weather;
-
- /* xglDisable( GL_DITHER ); */
-
- /* If enabled, normal vectors specified with glNormal are scaled
- to unit length after transformation. See glNormal. */
- xglEnable( GL_NORMALIZE );
-
- xglEnable( GL_LIGHTING );
- xglEnable( GL_LIGHT0 );
- xglLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec );
-
- xglFogi (GL_FOG_MODE, GL_LINEAR);
- xglFogf (GL_FOG_START, 10.0);
- xglFogf (GL_FOG_END, w->visibility);
- /* xglFogf (GL_FOG_DENSITY, w->visibility); */
- xglHint (GL_FOG_HINT, GL_NICEST /* GL_FASTEST */ );
-
- /* draw wire frame */
- /* xglPolygonMode(GL_FRONT_AND_BACK,GL_LINE); */
-}
-
-
-/**************************************************************************
- * Update the view volume, position, and orientation
- **************************************************************************/
-
-static void fgUpdateViewParams( void ) {
- fgFLIGHT *f;
- struct fgLIGHT *l;
-// struct fgTIME *t;
- struct fgVIEW *v;
-
- f = current_aircraft.flight;
- l = &cur_light_params;
-// t = &cur_time_params;
- v = ¤t_view;
-
- fgViewUpdate(f, v, l);
-
- if (displayInstruments)
- {
- xglViewport(0, (GLint)(winHeight / 2 ) , (GLint)winWidth, (GLint)winHeight / 2);
- /* Tell GL we are about to modify the projection parameters */
- xglMatrixMode(GL_PROJECTION);
- xglLoadIdentity();
- gluPerspective(65.0, 2.0/win_ratio, 1.0, 100000.0);
- }
- else
- {
- xglViewport(0, 0 , (GLint)winWidth, (GLint) winHeight);
- /* Tell GL we are about to modify the projection parameters */
- xglMatrixMode(GL_PROJECTION);
- xglLoadIdentity();
- gluPerspective(65.0, 1.0/win_ratio, 10.0, 100000.0);
- }
-
- xglMatrixMode(GL_MODELVIEW);
- xglLoadIdentity();
-
- /* set up our view volume (default) */
- gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
- v->view_pos.x + v->view_forward[0],
- v->view_pos.y + v->view_forward[1],
- v->view_pos.z + v->view_forward[2],
- v->view_up[0], v->view_up[1], v->view_up[2]);
-
- /* look almost straight up (testing and eclipse watching) */
- /* gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
- v->view_pos.x + v->view_up[0] + .001,
- v->view_pos.y + v->view_up[1] + .001,
- v->view_pos.z + v->view_up[2] + .001,
- v->view_up[0], v->view_up[1], v->view_up[2]); */
-
- /* lock view horizontally towards sun (testing) */
- /* gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
- v->view_pos.x + v->surface_to_sun[0],
- v->view_pos.y + v->surface_to_sun[1],
- v->view_pos.z + v->surface_to_sun[2],
- v->view_up[0], v->view_up[1], v->view_up[2]); */
-
- /* lock view horizontally towards south (testing) */
- /* gluLookAt(v->view_pos.x, v->view_pos.y, v->view_pos.z,
- v->view_pos.x + v->surface_south[0],
- v->view_pos.y + v->surface_south[1],
- v->view_pos.z + v->surface_south[2],
- v->view_up[0], v->view_up[1], v->view_up[2]); */
-
- /* set the sun position */
- xglLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec );
-}
-
-
-/*************************************************************************
- * Draw a basic instrument panel
- ************************************************************************/
-static void fgUpdateInstrViewParams( void ) {
- xglViewport(0, 0 , (GLint)winWidth, (GLint)winHeight / 2);
-
- xglMatrixMode(GL_PROJECTION);
- xglPushMatrix();
-
- xglLoadIdentity();
- gluOrtho2D(0, 640, 0, 480);
- xglMatrixMode(GL_MODELVIEW);
- xglPushMatrix();
- xglLoadIdentity();
-
- xglColor3f(1.0, 1.0, 1.0);
- xglIndexi(7);
-
- xglDisable(GL_DEPTH_TEST);
- xglDisable(GL_LIGHTING);
-
- xglLineWidth(1);
- xglColor3f (0.5, 0.5, 0.5);
-
- xglBegin(GL_QUADS);
- xglVertex2f(0.0, 0.00);
- xglVertex2f(0.0, 480.0);
- xglVertex2f(640.0,480.0);
- xglVertex2f(640.0, 0.0);
- xglEnd();
-
- xglRectf(0.0,0.0, 640, 480);
- xglEnable(GL_DEPTH_TEST);
- xglEnable(GL_LIGHTING);
- xglMatrixMode(GL_PROJECTION);
- xglPopMatrix();
- xglMatrixMode(GL_MODELVIEW);
- xglPopMatrix();
-}
-
-
-/**************************************************************************
- * Update all Visuals (redraws anything graphics related)
- **************************************************************************/
-
-static void fgRenderFrame( void ) {
- struct fgLIGHT *l;
- struct fgTIME *t;
- struct fgVIEW *v;
- double angle;
- GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
-
- l = &cur_light_params;
- t = &cur_time_params;
- v = ¤t_view;
-
- /* update view volume parameters */
- fgUpdateViewParams();
-
- xglClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
-
- /* Tell GL we are switching to model view parameters */
- xglMatrixMode(GL_MODELVIEW);
- /* xglLoadIdentity(); */
-
- /* draw sky */
- xglDisable( GL_DEPTH_TEST );
- xglDisable( GL_LIGHTING );
- xglDisable( GL_CULL_FACE );
- xglDisable( GL_FOG );
- xglShadeModel( GL_SMOOTH );
- fgSkyRender();
-
- /* setup transformation for drawing astronomical objects */
- xglPushMatrix();
- /* Translate to view position */
- xglTranslatef( v->view_pos.x, v->view_pos.y, v->view_pos.z );
- /* Rotate based on gst (sidereal time) */
- angle = t->gst * 15.041085; /* should be 15.041085, Curt thought it was 15*/
- /* printf("Rotating astro objects by %.2f degrees\n",angle); */
- xglRotatef( angle, 0.0, 0.0, -1.0 );
-
- /* draw stars and planets */
- fgStarsRender();
- fgPlanetsRender();
-
- /* draw the sun */
- fgSunRender();
-
- /* render the moon */
- xglEnable( GL_LIGHTING );
- /* set lighting parameters */
- xglLightfv(GL_LIGHT0, GL_AMBIENT, white );
- xglLightfv(GL_LIGHT0, GL_DIFFUSE, white );
- xglEnable( GL_CULL_FACE );
-
- /* Let's try some blending technique's (Durk)*/
- glEnable(GL_BLEND);
- glBlendFunc(GL_ONE, GL_ONE);
- fgMoonRender();
- glDisable(GL_BLEND);
-
- xglPopMatrix();
-
- /* draw scenery */
- xglShadeModel( /* GL_FLAT */ GL_SMOOTH );
- xglEnable( GL_DEPTH_TEST );
- xglEnable( GL_FOG );
- xglFogfv (GL_FOG_COLOR, l->fog_color);
- /* set lighting parameters */
- xglLightfv(GL_LIGHT0, GL_AMBIENT, l->scene_ambient );
- xglLightfv(GL_LIGHT0, GL_DIFFUSE, l->scene_diffuse );
- /* texture parameters */
- xglEnable( GL_TEXTURE_2D ); /* xglDisable( GL_TEXTURE_2D ); */
- xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ) ;
- xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ) ;
- xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ) ;
- xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
- GL_LINEAR /* GL_LINEAR_MIPMAP_LINEAR */ ) ;
- xglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
- xglHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
- /* set base color (I don't think this is doing anything here) */
- xglColor4fv(white);
-
- fgTileMgrRender();
-
- xglDisable( GL_TEXTURE_2D );
-
- /* display HUD */
- if( show_hud ) {
- fgCockpitUpdate();
- }
-
- /* display instruments */
- if (displayInstruments) {
- fgUpdateInstrViewParams();
- }
-
- xglutSwapBuffers();
-}
-
-
-/**************************************************************************
- * Update internal time dependent calculations (i.e. flight model)
- **************************************************************************/
-
-void fgUpdateTimeDepCalcs(int multi_loop) {
- fgFLIGHT *f;
- struct fgTIME *t;
- struct fgVIEW *v;
- int i;
-
- f = current_aircraft.flight;
- t = &cur_time_params;
- v = ¤t_view;
-
- /* update the flight model */
- if ( multi_loop < 0 ) {
- multi_loop = DEFAULT_MULTILOOP;
- }
-
- /* printf("updating flight model x %d\n", multi_loop); */
- fgFlightModelUpdate(FG_LARCSIM, f, multi_loop);
-
- /* update the view angle */
- for ( i = 0; i < multi_loop; i++ ) {
- if ( fabs(v->goal_view_offset - v->view_offset) < 0.05 ) {
- v->view_offset = v->goal_view_offset;
- break;
- } else {
- /* move v->view_offset towards v->goal_view_offset */
- if ( v->goal_view_offset > v->view_offset ) {
- if ( v->goal_view_offset - v->view_offset < FG_PI ) {
- v->view_offset += 0.01;
- } else {
- v->view_offset -= 0.01;
- }
- } else {
- if ( v->view_offset - v->goal_view_offset < FG_PI ) {
- v->view_offset -= 0.01;
- } else {
- v->view_offset += 0.01;
- }
- }
- if ( v->view_offset > FG_2PI ) {
- v->view_offset -= FG_2PI;
- } else if ( v->view_offset < 0 ) {
- v->view_offset += FG_2PI;
- }
- }
- }
-}
-
-
-void fgInitTimeDepCalcs( void ) {
- /* initialize timer */
-
-#ifdef HAVE_SETITIMER
- fgTimerInit( 1.0 / DEFAULT_TIMER_HZ, fgUpdateTimeDepCalcs );
-#endif HAVE_SETITIMER
-
-}
-
-
-/**************************************************************************
- * Scenery management routines
- **************************************************************************/
-
-/* static void fgSceneryInit_OLD() { */
- /* make scenery */
-/* scenery = fgSceneryCompile_OLD();
- runway = fgRunwayHack_OLD(0.69, 53.07);
-} */
-
-
-/* create the scenery */
-/* GLint fgSceneryCompile_OLD() {
- GLint scenery;
-
- scenery = mesh2GL(mesh_ptr_OLD);
-
- return(scenery);
-}
-*/
-
-/* hack in a runway */
-/* GLint fgRunwayHack_OLD(double width, double length) {
- static GLfloat concrete[4] = { 0.5, 0.5, 0.5, 1.0 };
- static GLfloat line[4] = { 0.9, 0.9, 0.9, 1.0 };
- int i;
- int num_lines = 16;
- float line_len, line_width_2, cur_pos;
-
- runway = xglGenLists(1);
- xglNewList(runway, GL_COMPILE);
- */
- /* draw concrete */
-/* xglBegin(GL_POLYGON);
- xglMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, concrete );
- xglNormal3f(0.0, 0.0, 1.0);
-
- xglVertex3d( 0.0, -width/2.0, 0.0);
- xglVertex3d( 0.0, width/2.0, 0.0);
- xglVertex3d(length, width/2.0, 0.0);
- xglVertex3d(length, -width/2.0, 0.0);
- xglEnd();
- */
- /* draw center line */
-/* xglMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, line );
- line_len = length / ( 2 * num_lines + 1);
- printf("line_len = %.3f\n", line_len);
- line_width_2 = 0.02;
- cur_pos = line_len;
- for ( i = 0; i < num_lines; i++ ) {
- xglBegin(GL_POLYGON);
- xglVertex3d( cur_pos, -line_width_2, 0.005);
- xglVertex3d( cur_pos, line_width_2, 0.005);
- cur_pos += line_len;
- xglVertex3d( cur_pos, line_width_2, 0.005);
- xglVertex3d( cur_pos, -line_width_2, 0.005);
- cur_pos += line_len;
- xglEnd();
- }
-
- xglEndList();
-
- return(runway);
-}
-*/
-
-/* draw the scenery */
-/*static void fgSceneryDraw_OLD() {
- static float z = 32.35;
-
- xglPushMatrix();
-
- xglCallList(scenery);
-
- printf("*** Drawing runway at %.2f\n", z);
-
- xglTranslatef( -398391.28, 120070.41, 32.35);
- xglRotatef(170.0, 0.0, 0.0, 1.0);
- xglCallList(runway);
-
- xglPopMatrix();
-}
-*/
-
-
-/* What should we do when we have nothing else to do? How about get
- * ready for the next move and update the display? */
-static void fgMainLoop( void ) {
- static int remainder = 0;
- int elapsed, multi_loop;
- double cur_elev;
- /* double joy_x, joy_y; */
- /* int joy_b1, joy_b2; */
- fgAIRCRAFT *a;
- fgFLIGHT *f;
- struct fgTIME *t;
-
- fgPrintf( FG_ALL, FG_DEBUG, "Running Main Loop\n");
- fgPrintf( FG_ALL, FG_DEBUG, "======= ==== ====\n");
-
- a = ¤t_aircraft;
- f = a->flight;
- t = &cur_time_params;
-
- /* update "time" */
- fgTimeUpdate(f, t);
-
- /* Read joystick */
- /* fgJoystickRead( &joy_x, &joy_y, &joy_b1, &joy_b2 );
- printf( "Joystick X %f Y %f B1 %d B2 %d\n",
- joy_x, joy_y, joy_b1, joy_b2 );
- fgElevSet( -joy_y );
- fgAileronSet( joy_x ); */
-
- /* Calculate model iterations needed */
- elapsed = fgGetTimeInterval();
- fgPrintf( FG_ALL, FG_BULK,
- "Time interval is = %d, previous remainder is = %d\n",
- elapsed, remainder);
- fgPrintf( FG_ALL, FG_BULK,
- "--> Frame rate is = %.2f\n", 1000.0 / (float)elapsed);
- elapsed += remainder;
-
- multi_loop = (int)(((float)elapsed * 0.001) * DEFAULT_MODEL_HZ);
- remainder = elapsed - ((multi_loop*1000) / DEFAULT_MODEL_HZ);
- fgPrintf( FG_ALL, FG_BULK,
- "Model iterations needed = %d, new remainder = %d\n",
- multi_loop, remainder);
-
- //Insertion by Jeff Goeke-Smith for Autopilot.
- // Where should this really go?
- // Maybe this should run in tandem with the Flight model.
-
- /* run Autopilot system */
- fgPrintf( FG_ALL, FG_BULK,"Attempting autopilot run\n");
-
- fgAPRun();
-
- // end of insertion
-
-
- /* Run flight model */
- if ( ! use_signals ) {
- /* flight model */
- fgUpdateTimeDepCalcs(multi_loop);
- }
-
- /* I'm just sticking this here for now, it should probably move
- * eventually */
- /* cur_elev = mesh_altitude(FG_Longitude * RAD_TO_ARCSEC,
- FG_Latitude * RAD_TO_ARCSEC); */
- /* there is no ground collision detection really, so for now I
- * just hard code the ground elevation to be 0 */
- cur_elev = 0;
-
- /* printf("Ground elevation is %.2f meters here.\n", cur_elev); */
- /* FG_Runway_altitude = cur_elev * METER_TO_FEET; */
-
- if ( FG_Altitude * FEET_TO_METER < cur_elev + 3.758099) {
- /* set this here, otherwise if we set runway height above our
- current height we get a really nasty bounce. */
- FG_Runway_altitude = FG_Altitude - 3.758099;
-
- /* now set aircraft altitude above ground */
- FG_Altitude = cur_elev * METER_TO_FEET + 3.758099;
- fgPrintf( FG_ALL, FG_BULK, "<*> resetting altitude to %.0f meters\n",
- FG_Altitude * FEET_TO_METER);
- }
-
- fgAircraftOutputCurrent(a);
-
- /* see if we need to load any new scenery tiles */
- fgTileMgrUpdate();
-
- /* Process/manage pending events */
- fgEventProcess();
-
- /* redraw display */
- fgRenderFrame();
-
- fgPrintf( FG_ALL, FG_DEBUG, "\n");
-}
-
-
-/**************************************************************************
- * Handle new window size or exposure
- **************************************************************************/
-
-static void fgReshape( int width, int height ) {
- /* Do this so we can call fgReshape(0,0) ourselves without having to know
- * what the values of width & height are. */
- if ( (height > 0) && (width > 0) ) {
- win_ratio = (GLfloat) height / (GLfloat) width;
- }
-
- winWidth = width;
- winHeight = height;
-
- /* Inform gl of our view window size (now handled elsewhere) */
- /* xglViewport(0, 0, (GLint)width, (GLint)height); */
-
- fgUpdateViewParams();
-
- /* xglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); */
-}
-
-
-/**************************************************************************
- * Main ...
- **************************************************************************/
-
-int main( int argc, char *argv[] ) {
- fgFLIGHT *f;
- int parse_result; // Used in command line argument.
-
- f = current_aircraft.flight;
- // First things first... We must have startup options dealt with.
-
- printf("Flight Gear: Version %s\n\n", VERSION);
-
- /*********************************************************************
- * Initialize the Window/Graphics environment.
- **********************************************************************/
-
- /* initialize GLUT */
- xglutInit(&argc, argv);
-
- /* Define Display Parameters */
- xglutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
-
- /* Define initial window size */
- xglutInitWindowSize(640, 480);
-
- /* Initialize windows */
- xglutCreateWindow("Flight Gear");
-
- // xglutInit above will extract all non-general program command line.
- // We only need wory about our own.
-
- parse_result = getargs( argc, argv, OptsDefined, CmdLineOptions, NULL);
-
- switch( parse_result ) {
- case ALLDONE:
- break;
-
- case HELP:
- print_desc( OptsDefined, CmdLineOptions );
- exit(0);
-
- case INVALID:
- default:
- printf( "Flight Gear: Command line invalid.");
- exit(0);
- }
-
- // Deal with the effects of options no set by manipulating the command
- // line, or possibly set to invalid states.
-
- if(( viewArg >= 0) && (viewArg <= 1)) {
- show_hud = viewArg; // For now view_mode TRUE - no HUD, else show_hud.
- } else {
- show_hud = DefaultViewMode;
- }
-
- // All other command line option responses are handled in the various
- // initialization routines (or ignored if not implemented.
-
- // This is the general house keeping init routine. It initializes the
- // debug trail scheme and then any other stuff.
-
- if( !fgInitGeneral()) {
-
- // This is the top level init routine which calls all the other
- // subsystem initialization routines. If you are adding a
- // subsystem to flight gear, its initialization call should
- // located in this routine.
- if( !fgInitSubsystems()) {
-
- // setup view parameters, only makes GL calls
- fgInitVisuals();
-
- if ( use_signals ) {
- /* init timer routines, signals, etc. Arrange for an alarm
- signal to be generated, etc. */
- fgInitTimeDepCalcs();
- }
-
- /**********************************************************
- * Initialize the GLUT Event Handlers.
- **********************************************************/
-
- // call fgReshape() on window resizes
- xglutReshapeFunc( fgReshape );
-
- // call key() on keyboard event
- xglutKeyboardFunc( GLUTkey );
- glutSpecialFunc( GLUTspecialkey );
-
- // call fgMainLoop() whenever there is
- // nothing else to do
- xglutIdleFunc( fgMainLoop );
-
- // draw the scene
- xglutDisplayFunc( fgRenderFrame );
-
- // pass control off to the GLUT event handler
- glutMainLoop();
-
- } // End if subsystems initialize ok
- } // End if general initializations went ok
-
- if( fg_DebugOutput ) {
- fclose( fg_DebugOutput );
- }
- return(0);
-}
-
-
-#ifdef __SUNPRO_CC
-extern "C" {
- void __eprintf( void ) {
- }
-}
-#endif
-
-/* $Log$
-/* Revision 1.71 1998/04/18 04:11:26 curt
-/* Moved fg_debug to it's own library, added zlib support.
-/*
- * Revision 1.70 1998/04/14 02:21:02 curt
- * Incorporated autopilot heading hold contributed by: Jeff Goeke-Smith
- * <jgoeke@voyager.net>
- *
- * Revision 1.69 1998/04/08 23:35:34 curt
- * Tweaks to Gnu automake/autoconf system.
- *
- * Revision 1.68 1998/04/03 22:09:03 curt
- * Converting to Gnu autoconf system.
- *
- * Revision 1.67 1998/03/23 21:24:37 curt
- * Source code formating tweaks.
- *
- * Revision 1.66 1998/03/14 00:31:20 curt
- * Beginning initial terrain texturing experiments.
- *
- * Revision 1.65 1998/03/09 22:45:57 curt
- * Minor tweaks for building on sparc platform.
- *
- * Revision 1.64 1998/02/20 00:16:23 curt
- * Thursday's tweaks.
- *
- * Revision 1.63 1998/02/16 16:17:39 curt
- * Minor tweaks.
- *
- * Revision 1.62 1998/02/16 13:39:42 curt
- * Miscellaneous weekend tweaks. Fixed? a cache problem that caused whole
- * tiles to occasionally be missing.
- *
- * Revision 1.61 1998/02/12 21:59:46 curt
- * Incorporated code changes contributed by Charlie Hotchkiss
- * <chotchkiss@namg.us.anritsu.com>
- *
- * Revision 1.60 1998/02/11 02:50:40 curt
- * Minor changes.
- *
- * Revision 1.59 1998/02/09 22:56:54 curt
- * Removed "depend" files from cvs control. Other minor make tweaks.
- *
- * Revision 1.58 1998/02/09 15:07:49 curt
- * Minor tweaks.
- *
- * Revision 1.57 1998/02/07 15:29:40 curt
- * Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
- * <chotchkiss@namg.us.anritsu.com>
- *
- * Revision 1.56 1998/02/03 23:20:23 curt
- * Lots of little tweaks to fix various consistency problems discovered by
- * Solaris' CC. Fixed a bug in fg_debug.c with how the fgPrintf() wrapper
- * passed arguments along to the real printf(). Also incorporated HUD changes
- * by Michele America.
- *
- * Revision 1.55 1998/02/02 20:53:58 curt
- * Incorporated Durk's changes.
- *
- * Revision 1.54 1998/01/31 00:43:10 curt
- * Added MetroWorks patches from Carmen Volpe.
- *
- * Revision 1.53 1998/01/27 18:35:54 curt
- * Minor tweaks.
- *
- * Revision 1.52 1998/01/27 00:47:56 curt
- * Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
- * system and commandline/config file processing code.
- *
- * Revision 1.51 1998/01/26 15:57:05 curt
- * Tweaks for dynamic scenery development.
- *
- * Revision 1.50 1998/01/19 19:27:07 curt
- * Merged in make system changes from Bob Kuehne <rpk@sgi.com>
- * This should simplify things tremendously.
- *
- * Revision 1.49 1998/01/19 18:40:31 curt
- * Tons of little changes to clean up the code and to remove fatal errors
- * when building with the c++ compiler.
- *
- * Revision 1.48 1998/01/19 18:35:46 curt
- * Minor tweaks and fixes for cygwin32.
- *
- * Revision 1.47 1998/01/13 00:23:08 curt
- * Initial changes to support loading and management of scenery tiles. Note,
- * there's still a fair amount of work left to be done.
- *
- * Revision 1.46 1998/01/08 02:22:06 curt
- * Beginning to integrate Tile management subsystem.
- *
- * Revision 1.45 1998/01/07 03:18:55 curt
- * Moved astronomical stuff from .../Src/Scenery to .../Src/Astro/
- *
- * Revision 1.44 1997/12/30 22:22:31 curt
- * Further integration of event manager.
- *
- * Revision 1.43 1997/12/30 20:47:43 curt
- * Integrated new event manager with subsystem initializations.
- *
- * Revision 1.42 1997/12/30 16:36:47 curt
- * Merged in Durk's changes ...
- *
- * Revision 1.41 1997/12/30 13:06:56 curt
- * A couple lighting tweaks ...
- *
- * Revision 1.40 1997/12/30 01:38:37 curt
- * Switched back to per vertex normals and smooth shading for terrain.
- *
- * Revision 1.39 1997/12/22 23:45:45 curt
- * First stab at sunset/sunrise sky glow effects.
- *
- * Revision 1.38 1997/12/22 04:14:28 curt
- * Aligned sky with sun so dusk/dawn effects can be correct relative to the sun.
- *
- * Revision 1.37 1997/12/19 23:34:03 curt
- * Lot's of tweaking with sky rendering and lighting.
- *
- * Revision 1.36 1997/12/19 16:44:57 curt
- * Working on scene rendering order and options.
- *
- * Revision 1.35 1997/12/18 23:32:32 curt
- * First stab at sky dome actually starting to look reasonable. :-)
- *
- * Revision 1.34 1997/12/17 23:13:34 curt
- * Began working on rendering a sky.
- *
- * Revision 1.33 1997/12/15 23:54:45 curt
- * Add xgl wrappers for debugging.
- * Generate terrain normals on the fly.
- *
- * Revision 1.32 1997/12/15 20:59:08 curt
- * Misc. tweaks.
- *
- * Revision 1.31 1997/12/12 21:41:25 curt
- * More light/material property tweaking ... still a ways off.
- *
- * Revision 1.30 1997/12/12 19:52:47 curt
- * Working on lightling and material properties.
- *
- * Revision 1.29 1997/12/11 04:43:54 curt
- * Fixed sun vector and lighting problems. I thing the moon is now lit
- * correctly.
- *
- * Revision 1.28 1997/12/10 22:37:45 curt
- * Prepended "fg" on the name of all global structures that didn't have it yet.
- * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
- *
- * Revision 1.27 1997/12/09 05:11:54 curt
- * Working on tweaking lighting.
- *
- * Revision 1.26 1997/12/09 04:25:29 curt
- * Working on adding a global lighting params structure.
- *
- * Revision 1.25 1997/12/08 22:54:09 curt
- * Enabled GL_CULL_FACE.
- *
- * Revision 1.24 1997/11/25 19:25:32 curt
- * Changes to integrate Durk's moon/sun code updates + clean up.
- *
- * Revision 1.23 1997/11/15 18:16:34 curt
- * minor tweaks.
- *
- * Revision 1.22 1997/10/30 12:38:41 curt
- * Working on new scenery subsystem.
- *
- * Revision 1.21 1997/09/23 00:29:38 curt
- * Tweaks to get things to compile with gcc-win32.
- *
- * Revision 1.20 1997/09/22 14:44:19 curt
- * Continuing to try to align stars correctly.
- *
- * Revision 1.19 1997/09/18 16:20:08 curt
- * At dusk/dawn add/remove stars in stages.
- *
- * Revision 1.18 1997/09/16 22:14:51 curt
- * Tweaked time of day lighting equations. Don't draw stars during the day.
- *
- * Revision 1.17 1997/09/16 15:50:29 curt
- * Working on star alignment and time issues.
- *
- * Revision 1.16 1997/09/13 02:00:06 curt
- * Mostly working on stars and generating sidereal time for accurate star
- * placement.
- *
- * Revision 1.15 1997/09/05 14:17:27 curt
- * More tweaking with stars.
- *
- * Revision 1.14 1997/09/05 01:35:53 curt
- * Working on getting stars right.
- *
- * Revision 1.13 1997/09/04 02:17:34 curt
- * Shufflin' stuff.
- *
- * Revision 1.12 1997/08/27 21:32:24 curt
- * Restructured view calculation code. Added stars.
- *
- * Revision 1.11 1997/08/27 03:30:16 curt
- * Changed naming scheme of basic shared structures.
- *
- * Revision 1.10 1997/08/25 20:27:22 curt
- * Merged in initial HUD and Joystick code.
- *
- * Revision 1.9 1997/08/22 21:34:39 curt
- * Doing a bit of reorganizing and house cleaning.
- *
- * Revision 1.8 1997/08/19 23:55:03 curt
- * Worked on better simulating real lighting.
- *
- * Revision 1.7 1997/08/16 12:22:38 curt
- * Working on improving the lighting/shading.
- *
- * Revision 1.6 1997/08/13 20:24:56 curt
- * Changes due to changing sunpos interface.
- *
- * Revision 1.5 1997/08/06 21:08:32 curt
- * Sun position now *really* works (I think) ... I still have sun time warping
- * code in place, probably should remove it soon.
- *
- * Revision 1.4 1997/08/06 15:41:26 curt
- * Working on correct sun position.
- *
- * Revision 1.3 1997/08/06 00:24:22 curt
- * Working on correct real time sun lighting.
- *
- * Revision 1.2 1997/08/04 20:25:15 curt
- * Organizational tweaking.
- *
- * Revision 1.1 1997/08/02 18:45:00 curt
- * Renamed GLmain.c GLUTmain.c
- *
- * Revision 1.43 1997/08/02 16:23:47 curt
- * Misc. tweaks.
- *
- * Revision 1.42 1997/08/01 19:43:33 curt
- * Making progress with coordinate system overhaul.
- *
- * Revision 1.41 1997/07/31 22:52:37 curt
- * Working on redoing internal coordinate systems & scenery transformations.
- *
- * Revision 1.40 1997/07/30 16:12:42 curt
- * Moved fg_random routines from Util/ to Math/
- *
- * Revision 1.39 1997/07/21 14:45:01 curt
- * Minor tweaks.
- *
- * Revision 1.38 1997/07/19 23:04:47 curt
- * Added an initial weather section.
- *
- * Revision 1.37 1997/07/19 22:34:02 curt
- * Moved PI definitions to ../constants.h
- * Moved random() stuff to ../Utils/ and renamed fg_random()
- *
- * Revision 1.36 1997/07/18 23:41:25 curt
- * Tweaks for building with Cygnus Win32 compiler.
- *
- * Revision 1.35 1997/07/18 14:28:34 curt
- * Hacked in some support for wind/turbulence.
- *
- * Revision 1.34 1997/07/16 20:04:48 curt
- * Minor tweaks to aid Win32 port.
- *
- * Revision 1.33 1997/07/12 03:50:20 curt
- * Added an #include <Windows32/Base.h> to help compiling for Win32
- *
- * Revision 1.32 1997/07/11 03:23:18 curt
- * Solved some scenery display/orientation problems. Still have a positioning
- * (or transformation?) problem.
- *
- * Revision 1.31 1997/07/11 01:29:58 curt
- * More tweaking of terrian floor.
- *
- * Revision 1.30 1997/07/10 04:26:37 curt
- * We now can interpolated ground elevation for any position in the grid. We
- * can use this to enforce a "hard" ground. We still need to enforce some
- * bounds checking so that we don't try to lookup data points outside the
- * grid data set.
- *
- * Revision 1.29 1997/07/09 21:31:12 curt
- * Working on making the ground "hard."
- *
- * Revision 1.28 1997/07/08 18:20:12 curt
- * Working on establishing a hard ground.
- *
- * Revision 1.27 1997/07/07 20:59:49 curt
- * Working on scenery transformations to enable us to fly fluidly over the
- * poles with no discontinuity/distortion in scenery.
- *
- * Revision 1.26 1997/07/05 20:43:34 curt
- * renamed mat3 directory to Math so we could add other math related routines.
- *
- * Revision 1.25 1997/06/29 21:19:17 curt
- * Working on scenery management system.
- *
- * Revision 1.24 1997/06/26 22:14:53 curt
- * Beginning work on a scenery management system.
- *
- * Revision 1.23 1997/06/26 19:08:33 curt
- * Restructuring make, adding automatic "make dep" support.
- *
- * Revision 1.22 1997/06/25 15:39:47 curt
- * Minor changes to compile with rsxnt/win32.
- *
- * Revision 1.21 1997/06/22 21:44:41 curt
- * Working on intergrating the VRML (subset) parser.
- *
- * Revision 1.20 1997/06/21 17:12:53 curt
- * Capitalized subdirectory names.
- *
- * Revision 1.19 1997/06/18 04:10:31 curt
- * A couple more runway tweaks ...
- *
- * Revision 1.18 1997/06/18 02:21:24 curt
- * Hacked in a runway
- *
- * Revision 1.17 1997/06/17 16:51:58 curt
- * Timer interval stuff now uses gettimeofday() instead of ftime()
- *
- * Revision 1.16 1997/06/17 04:19:16 curt
- * More timer related tweaks with respect to view direction changes.
- *
- * Revision 1.15 1997/06/17 03:41:10 curt
- * Nonsignal based interval timing is now working.
- * This would be a good time to look at cleaning up the code structure a bit.
- *
- * Revision 1.14 1997/06/16 19:32:51 curt
- * Starting to add general timer support.
- *
- * Revision 1.13 1997/06/02 03:40:06 curt
- * A tiny bit more view tweaking.
- *
- * Revision 1.12 1997/06/02 03:01:38 curt
- * Working on views (side, front, back, transitions, etc.)
- *
- * Revision 1.11 1997/05/31 19:16:25 curt
- * Elevator trim added.
- *
- * Revision 1.10 1997/05/31 04:13:52 curt
- * WE CAN NOW FLY!!!
- *
- * Continuing work on the LaRCsim flight model integration.
- * Added some MSFS-like keyboard input handling.
- *
- * Revision 1.9 1997/05/30 19:27:01 curt
- * The LaRCsim flight model is starting to look like it is working.
- *
- * Revision 1.8 1997/05/30 03:54:10 curt
- * Made a bit more progress towards integrating the LaRCsim flight model.
- *
- * Revision 1.7 1997/05/29 22:39:49 curt
- * Working on incorporating the LaRCsim flight model.
- *
- * Revision 1.6 1997/05/29 12:31:39 curt
- * Minor tweaks, moving towards general flight model integration.
- *
- * Revision 1.5 1997/05/29 02:33:23 curt
- * Updated to reflect changing interfaces in other "modules."
- *
- * Revision 1.4 1997/05/27 17:44:31 curt
- * Renamed & rearranged variables and routines. Added some initial simple
- * timer/alarm routines so the flight model can be updated on a regular
- * interval.
- *
- * Revision 1.3 1997/05/23 15:40:25 curt
- * Added GNU copyright headers.
- * Fog now works!
- *
- * Revision 1.2 1997/05/23 00:35:12 curt
- * Trying to get fog to work ...
- *
- * Revision 1.1 1997/05/21 15:57:51 curt
- * Renamed due to added GLUT support.
- *
- * Revision 1.3 1997/05/19 18:22:42 curt
- * Parameter tweaking ... starting to stub in fog support.
- *
- * Revision 1.2 1997/05/17 00:17:34 curt
- * Trying to stub in support for standard OpenGL.
- *
- * Revision 1.1 1997/05/16 16:05:52 curt
- * Initial revision.
- *
- */