#include <stdio.h>
#include <stdlib.h>
+
+// work around a stdc++ lib bug in some versions of linux, but doesn't
+// seem to hurt to have this here for all versions of Linux.
+#ifdef linux
+# define _G_NO_EXTERN_TEMPLATES
+#endif
+
#include <string.h>
#include <Include/fg_constants.h>
#include <Cockpit/cockpit.hxx>
#include <Debug/fg_debug.h>
#include <Joystick/joystick.h>
+#include <Math/fg_geodesy.h>
#include <Math/fg_random.h>
+#include <Math/polar3d.hxx>
#include <Scenery/scenery.hxx>
#include <Scenery/tilemgr.hxx>
#include <Time/event.hxx>
extern const char *default_root;
-// Set initial position
+// Set initial position and orientation
int fgInitPosition( void ) {
+ char id[5];
fgFLIGHT *f;
- fgOPTIONS *o;
f = current_aircraft.flight;
- o = ¤t_options;
-
- // If nothing else is specified, default initial position is
- // Globe, AZ (P13)
- FG_Longitude = ( -110.6642444 ) * DEG_TO_RAD;
- FG_Latitude = ( 33.3528917 ) * DEG_TO_RAD;
- FG_Runway_altitude = (3234.5 + 300);
- FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // Initial Position north of the city of Globe
- // FG_Longitude = ( -398673.28 / 3600.0 ) * DEG_TO_RAD;
- // FG_Latitude = ( 120625.64 / 3600.0 ) * DEG_TO_RAD;
- // FG_Longitude = ( -397867.44 / 3600.0 ) * DEG_TO_RAD;
- // FG_Latitude = ( 119548.21 / 3600.0 ) * DEG_TO_RAD;
- // FG_Altitude = 0.0 + 3.758099;
-
- // Initial Position near where I used to live in Globe, AZ
- // FG_Longitude = ( -398757.6 / 3600.0 ) * DEG_TO_RAD;
- // FG_Latitude = ( 120160.0 / 3600.0 ) * DEG_TO_RAD;
- // FG_Runway_altitude = 4000.0;
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // Initial Position: 10125 Jewell St. NE
- // FG_Longitude = ( -93.15 ) * DEG_TO_RAD;
- // FG_Latitude = ( 45.15 ) * DEG_TO_RAD;
- // FG_Runway_altitude = 950.0;
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // Initial Position near KHSP (Hot Springs, VA)
- // FG_Longitude = (-79.8338964 + 0.01) * DEG_TO_RAD;
- // FG_Latitude = ( 37.9514564 + 0.008) * DEG_TO_RAD;
- // FG_Runway_altitude = (3792 + 2800);
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // Initial Position at (SEZ) SEDONA airport
- // FG_Longitude = (-111.7884614 + 0.01) * DEG_TO_RAD;
- // FG_Latitude = ( 34.8486289 - 0.015) * DEG_TO_RAD;
- // FG_Runway_altitude = (4827 + 450);
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // Initial Position: Somewhere near the Grand Canyon
- // FG_Longitude = ( -112.5 ) * DEG_TO_RAD;
- // FG_Latitude = ( 36.5 ) * DEG_TO_RAD;
- // FG_Runway_altitude = 8000.0;
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // Initial Position: Jim Brennon's Kingmont Observatory
- // FG_Longitude = ( -121.1131667 ) * DEG_TO_RAD;
- // FG_Latitude = ( 38.8293917 ) * DEG_TO_RAD;
- // FG_Runway_altitude = 920.0;
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // probably interesting for european team members
- // That is: If I can get the scenery to work -;) (Durk)
-
- // Eclipse Watching w73.5 n10 (approx) 18:00 UT
- // FG_Longitude = ( -73.5 ) * DEG_TO_RAD;
- // FG_Latitude = ( 10.0 ) * DEG_TO_RAD;
- // FG_Runway_altitude = 0.0;
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // Test Position
- // FG_Longitude = ( 8.5 ) * DEG_TO_RAD;
- // FG_Latitude = ( 47.5 ) * DEG_TO_RAD;
- FG_Runway_altitude = ( 6000 );
- FG_Altitude = FG_Runway_altitude + 3.758099;
-
- if ( strlen(o->airport_id) ) {
+
+ current_options.get_airport_id(id);
+ if ( strlen(id) ) {
+ // set initial position from airport id
+
fgAIRPORTS airports;
fgAIRPORT a;
fgPrintf( FG_GENERAL, FG_INFO,
"Attempting to set starting position from airport code %s.\n",
- o->airport_id);
+ id);
airports.load("Airports");
- a = airports.search(o->airport_id);
+ a = airports.search(id);
if ( (fabs(a.longitude) < FG_EPSILON) &&
(fabs(a.latitude) < FG_EPSILON) &&
(fabs(a.elevation) < FG_EPSILON) ) {
fgPrintf( FG_GENERAL, FG_EXIT,
- "Failed to find %s in database.\n", o->airport_id);
+ "Failed to find %s in database.\n", id);
} else {
FG_Longitude = ( a.longitude ) * DEG_TO_RAD;
FG_Latitude = ( a.latitude ) * DEG_TO_RAD;
- FG_Runway_altitude = ( a.elevation + 200 );
- FG_Altitude = FG_Runway_altitude + 3.758099;
}
+ } else {
+ // set initial position from default or command line coordinates
+
+ FG_Longitude = current_options.get_lon() * DEG_TO_RAD;
+ FG_Latitude = current_options.get_lat() * DEG_TO_RAD;
}
+ printf("starting altitude is = %.2f\n", current_options.get_altitude());
+
+ FG_Altitude = current_options.get_altitude() * METER_TO_FEET;
+ FG_Runway_altitude = FG_Altitude - 3.758099;
+
fgPrintf( FG_GENERAL, FG_INFO,
"Initial position is: (%.4f, %.4f, %.2f)\n",
FG_Longitude * RAD_TO_DEG, FG_Latitude * RAD_TO_DEG,
// General house keeping initializations
int fgInitGeneral( void ) {
fgGENERAL *g;
- fgOPTIONS *o;
+ char root[256];
int i;
g = &general;
- o = ¤t_options;
fgPrintf( FG_GENERAL, FG_INFO, "General Initialization\n" );
fgPrintf( FG_GENERAL, FG_INFO, "======= ==============\n" );
- if ( !strlen(o->fg_root) ) {
- // No root path set? Then assume, we will exit if this is
- // wrong when looking for support files.
+ g->glVendor = (char *)glGetString ( GL_VENDOR );
+ g->glRenderer = (char *)glGetString ( GL_RENDERER );
+ g->glVersion = (char *)glGetString ( GL_VERSION );
+
+ current_options.get_fg_root(root);
+ if ( !strlen(root) ) {
+ // No root path set? Then bail ...
fgPrintf( FG_GENERAL, FG_EXIT, "%s %s\n",
"Cannot continue without environment variable FG_ROOT",
"being defined.");
}
- fgPrintf( FG_GENERAL, FG_INFO, "FG_ROOT = %s\n\n", o->fg_root);
+ fgPrintf( FG_GENERAL, FG_INFO, "FG_ROOT = %s\n\n", root);
// prime the frame rate counter pump
for ( i = 0; i < FG_FRAME_RATE_HISTORY; i++ ) {
}
+// convert a geodetic point lon(radians), lat(radians), elev(meter) to
+// a cartesian point
+fgPoint3d geod_to_cart(double geod[3]) {
+ fgPoint3d cp;
+ fgPoint3d pp;
+ double gc_lon, gc_lat, sl_radius;
+
+ // printf("A geodetic point is (%.2f, %.2f, %.2f)\n",
+ // geod[0], geod[1], geod[2]);
+
+ gc_lon = geod[0];
+ fgGeodToGeoc(geod[1], geod[2], &sl_radius, &gc_lat);
+
+ // printf("A geocentric point is (%.2f, %.2f, %.2f)\n", gc_lon,
+ // gc_lat, sl_radius+geod[2]);
+
+ pp.lon = gc_lon;
+ pp.lat = gc_lat;
+ pp.radius = sl_radius + geod[2];
+ cp = fgPolarToCart3d(pp);
+
+ // printf("A cart point is (%.8f, %.8f, %.8f)\n", cp.x, cp.y, cp.z);
+
+ return(cp);
+}
+
+
// This is the top level init routine which calls all the other
// initialization routines. If you are adding a subsystem to flight
// gear, its initialization call should located in this routine.
// Returns non-zero if a problem encountered.
int fgInitSubsystems( void ) {
- double cur_elev;
-
fgFLIGHT *f;
fgLIGHT *l;
fgTIME *t;
fgVIEW *v;
+ double geod_pos[3];
+ fgPoint3d abs_view_pos;
l = &cur_light_params;
t = &cur_time_params;
// seed the random number generater
fg_srandom();
- // The following section sets up the flight model EOM parameters
- // and should really be read in from one or more files.
-
- // Must happen before any of the flight model or control
- // parameters are set
-
+ // allocates structures so must happen before any of the flight
+ // model or control parameters are set
fgAircraftInit(); // In the future this might not be the case.
f = current_aircraft.flight;
// set the initial position
fgInitPosition();
+ // Initialize the Scenery Management subsystem
+ if ( fgSceneryInit() ) {
+ // Scenery initialized ok.
+ } else {
+ fgPrintf( FG_GENERAL, FG_EXIT, "Error in Scenery initialization!\n" );
+ }
+
+ if( fgTileMgrInit() ) {
+ // Load the local scenery data
+ fgTileMgrUpdate();
+ } else {
+ fgPrintf( FG_GENERAL, FG_EXIT,
+ "Error in Tile Manager initialization!\n" );
+ }
+
+ // calculalate a cartesian point somewhere along the line between
+ // the center of the earth and our view position
+ geod_pos[0] = FG_Longitude;
+ geod_pos[1] = FG_Latitude;
+ // doesn't have to be the exact elevation (this is good because we
+ // don't know it yet :-)
+ geod_pos[2] = 0;
+ abs_view_pos = geod_to_cart(geod_pos);
+
+ // Calculate ground elevation at starting point
+ scenery.cur_elev =
+ fgTileMgrCurElev( FG_Longitude, FG_Latitude, &abs_view_pos );
+ FG_Runway_altitude = scenery.cur_elev * METER_TO_FEET;
+
+ // Reset our altitude if we are below ground
+ if ( FG_Altitude < FG_Runway_altitude + 3.758099) {
+ FG_Altitude = FG_Runway_altitude + 3.758099;
+ }
+
+ fgPrintf( FG_GENERAL, FG_INFO,
+ "Updated position (after elevation adj): (%.4f, %.4f, %.2f)\n",
+ FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG,
+ FG_Altitude * FEET_TO_METER);
+ // end of thing that I just stuck in that I should probably move
+
+ // The following section sets up the flight model EOM parameters
+ // and should really be read in from one or more files.
+
// Initial Velocity
FG_V_north = 0.0; // 7.287719E+00
FG_V_east = 0.0; // 1.521770E+03
FG_V_down = 0.0; // -1.265722E-05
// Initial Orientation
- FG_Phi = -2.658474E-06;
- FG_Theta = 7.401790E-03;
- FG_Psi = 270.0 * DEG_TO_RAD;
+ FG_Phi = current_options.get_roll() * DEG_TO_RAD;
+ FG_Theta = current_options.get_pitch() * DEG_TO_RAD;
+ FG_Psi = current_options.get_heading() * DEG_TO_RAD;
// Initial Angular B rates
FG_P_body = 7.206685E-05;
// Initialize view parameters
v->Init();
- v->Update(f);
+ v->UpdateViewMath(f);
v->UpdateWorldToEye(f);
// Initialize the orbital elements of sun, moon and mayor planets
// Initialize the "sky"
fgSkyInit();
- // Initialize the Scenery Management subsystem
- if ( fgSceneryInit() ) {
- // Scenery initialized ok.
- } else {
- fgPrintf( FG_GENERAL, FG_EXIT, "Error in Scenery initialization!\n" );
- }
-
+ // Initialize the flight model subsystem data structures base on
+ // above values
- if( fgTileMgrInit() ) {
- // Load the local scenery data
- fgTileMgrUpdate();
- } else {
- fgPrintf( FG_GENERAL, FG_EXIT,
- "Error in Tile Manager initialization!\n" );
- }
+ fgFlightModelInit( current_options.get_flight_model(), f,
+ 1.0 / DEFAULT_MODEL_HZ );
// I'm just sticking this here for now, it should probably move
// eventually
- cur_elev = FG_Runway_altitude * FEET_TO_METER;
- if ( cur_elev > -9990.0 ) {
- FG_Runway_altitude = cur_elev * METER_TO_FEET;
- }
-
- if ( FG_Altitude < FG_Runway_altitude ) {
- FG_Altitude = FG_Runway_altitude + 3.758099;
- }
-
- fgPrintf( FG_GENERAL, FG_INFO,
- "Updated position (after elevation adj): (%.4f, %.4f, %.2f)\n",
- FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG,
- FG_Altitude * FEET_TO_METER);
- // end of thing that I just stuck in that I should probably move
-
- // Initialize the flight model subsystem data structures base on
- // above values
+ scenery.cur_elev = FG_Runway_altitude * FEET_TO_METER;
- fgFlightModelInit( FG_LARCSIM, f, 1.0 / DEFAULT_MODEL_HZ );
+ if ( FG_Altitude < FG_Runway_altitude + 3.758099) {
+ FG_Altitude = FG_Runway_altitude + 3.758099;
+ }
+
+ fgPrintf( FG_GENERAL, FG_INFO,
+ "Updated position (after elevation adj): (%.4f, %.4f, %.2f)\n",
+ FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG,
+ FG_Altitude * FEET_TO_METER);
+ // end of thing that I just stuck in that I should probably move
// Joystick support
if (fgJoystickInit(0) ) {
// $Log$
+// Revision 1.31 1998/08/22 14:49:57 curt
+// Attempting to iron out seg faults and crashes.
+// Did some shuffling to fix a initialization order problem between view
+// position, scenery elevation.
+//
+// Revision 1.30 1998/08/20 20:32:33 curt
+// Reshuffled some of the code in and around views.[ch]xx
+//
+// Revision 1.29 1998/07/30 23:48:27 curt
+// Output position & orientation when pausing.
+// Eliminated libtool use.
+// Added options to specify initial position and orientation.
+// Changed default fov to 55 degrees.
+// Added command line option to start in paused or unpaused state.
+//
+// Revision 1.28 1998/07/27 18:41:25 curt
+// Added a pause command "p"
+// Fixed some initialization order problems between pui and glut.
+// Added an --enable/disable-sound option.
+//
+// Revision 1.27 1998/07/24 21:39:10 curt
+// Debugging output tweaks.
+// Cast glGetString to (char *) to avoid compiler errors.
+// Optimizations to fgGluLookAt() by Norman Vine.
+//
+// Revision 1.26 1998/07/22 21:40:44 curt
+// Clear to adjusted fog color (for sunrise/sunset effects)
+// Make call to fog sunrise/sunset adjustment method.
+// Add a stdc++ library bug work around to fg_init.cxx
+//
+// Revision 1.25 1998/07/13 21:01:38 curt
+// Wrote access functions for current fgOPTIONS.
+//
+// Revision 1.24 1998/07/13 15:32:39 curt
+// Clear color buffer if drawing wireframe.
+// When specifying and airport, start elevation at -1000 and let the system
+// position you at ground level.
+//
+// Revision 1.23 1998/07/12 03:14:43 curt
+// Added ground collision detection.
+// Did some serious horsing around to be able to "hug" the ground properly
+// and still be able to take off.
+// Set the near clip plane to 1.0 meters when less than 10 meters above the
+// ground.
+// Did some serious horsing around getting the initial airplane position to be
+// correct based on rendered terrain elevation.
+// Added a little cheat/hack that will prevent the view position from ever
+// dropping below the terrain, even when the flight model doesn't quite
+// put you as high as you'd like.
+//
+// Revision 1.22 1998/07/04 00:52:25 curt
+// Add my own version of gluLookAt() (which is nearly identical to the
+// Mesa/glu version.) But, by calculating the Model View matrix our selves
+// we can save this matrix without having to read it back in from the video
+// card. This hopefully allows us to save a few cpu cycles when rendering
+// out the fragments because we can just use glLoadMatrixd() with the
+// precalculated matrix for each tile rather than doing a push(), translate(),
+// pop() for every fragment.
+//
+// Panel status defaults to off for now until it gets a bit more developed.
+//
+// Extract OpenGL driver info on initialization.
+//
// Revision 1.21 1998/06/27 16:54:33 curt
// Replaced "extern displayInstruments" with a entry in fgOPTIONS.
// Don't change the view port when displaying the panel.
projects / flightgear.git / blobdiff