"Fog density = %.4f\n", w->visibility);
return;
case 27: /* ESC */
- if( fg_DebugOutput ) {
- fclose( fg_DebugOutput );
- }
+ // if( fg_DebugOutput ) {
+ // fclose( fg_DebugOutput );
+ // }
exit(0);
}
}
-
}
/* $Log$
-/* Revision 1.3 1998/04/24 14:19:29 curt
-/* Fog tweaks.
+/* Revision 1.4 1998/04/25 20:24:00 curt
+/* Cleaned up initialization sequence to eliminate interdependencies
+/* between sun position, lighting, and view position. This creates a
+/* valid single pass initialization path.
/*
+ * Revision 1.3 1998/04/24 14:19:29 curt
+ * Fog tweaks.
+ *
* Revision 1.2 1998/04/24 00:49:17 curt
* Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
* Trying out some different option parsing code.
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;
o = ¤t_options;
// $Log$
+// Revision 1.5 1998/04/25 20:24:01 curt
+// Cleaned up initialization sequence to eliminate interdependencies
+// between sun position, lighting, and view position. This creates a
+// valid single pass initialization path.
+//
// Revision 1.4 1998/04/24 14:19:30 curt
// Fog tweaks.
//
f = current_aircraft.flight;
o = ¤t_options;
- // Initial Position at (P13) Globe, AZ
+ // 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 at (E81) Superior, AZ
- // FG_Longitude = ( -111.1270650 ) * DEG_TO_RAD;
- // FG_Latitude = ( 33.2778339 ) * DEG_TO_RAD;
- // FG_Runway_altitude = (2646 + 100);
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // Initial Position at (TUS) Tucson, AZ
- // FG_Longitude = ( -110.9412597 ) * DEG_TO_RAD;
- // FG_Latitude = ( 32.1162439 ) * DEG_TO_RAD;
- // FG_Runway_altitude = (2641 + 0);
- // 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 at near Anchoraze, AK
- // FG_Longitude = ( -152.00 ) * DEG_TO_RAD;
- // FG_Latitude = ( 61.17 ) * DEG_TO_RAD;
- // FG_Runway_altitude = (0);
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // Initial Position at (HSP) 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 + 1300);
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // Initial Position at (ANE) Anoka County airport
- // FG_Longitude = -93.2113889 * DEG_TO_RAD;
- // FG_Latitude = 45.145 * DEG_TO_RAD;
- // FG_Runway_altitude = 912;
- // 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_Runway_altitude = 8000.0;
// FG_Altitude = FG_Runway_altitude + 3.758099;
- // Initial Position: (GCN) Grand Canyon Airport, AZ
- // FG_Longitude = ( -112.1469647 ) * DEG_TO_RAD;
- // FG_Latitude = ( 35.9523539 ) * DEG_TO_RAD;
- // FG_Runway_altitude = 6606.0;
- // 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;
// probably interesting for european team members
// That is: If I can get the scenery to work -;) (Durk)
- // Initial Position: Groningen Airport Eelde, the netherlands
- // FG_Longitude = ( 6.583333 ) * DEG_TO_RAD;
- // FG_Latitude = ( 53.125 ) * DEG_TO_RAD;
- // FG_Runway_altitude = 920.0;
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
- // Initial Position: Schiphol Amsterdam Airport, the netherlands
- // FG_Longitude = ( -4.7641667 ) * DEG_TO_RAD;
- // FG_Latitude = ( 52.308056 ) * DEG_TO_RAD;
- // FG_Runway_altitude = 920.0;
- // FG_Altitude = FG_Runway_altitude + 3.758099;
-
// Eclipse Watching w73.5 n10 (approx) 18:00 UT
// FG_Longitude = ( -73.5 ) * DEG_TO_RAD;
// FG_Latitude = ( 10.0 ) * DEG_TO_RAD;
airports.load("Airports");
a = airports.search(o->airport_id);
if ( strcmp(a.id, "none") == 0 ) {
- fgPrintf( FG_GENERAL, FG_INFO,
+ fgPrintf( FG_GENERAL, FG_EXIT,
"Failed to find %s in database.\n", o->airport_id);
} else {
FG_Longitude = ( a.longitude ) * DEG_TO_RAD;
"Initial position is: (%.4f, %.4f, %.2f)\n",
FG_Longitude * RAD_TO_DEG, FG_Latitude * RAD_TO_DEG,
FG_Altitude * FEET_TO_METER);
+
+ return(1);
}
g = &general;
+ fgPrintf( FG_GENERAL, FG_INFO, "General Initialization\n" );
+ fgPrintf( FG_GENERAL, FG_INFO, "======= ==============\n" );
+
// determine the fg root path.
if( !(g->root_dir) ) {
// If not set by command line test for environmental var..
}
fgPrintf( FG_GENERAL, FG_INFO, "FG_ROOT = %s\n\n", g->root_dir);
- fgPrintf( FG_GENERAL, FG_INFO, "General Initialization\n" );
- fgPrintf( FG_GENERAL, FG_INFO, "======= ==============\n" );
-
- // seed the random number generater
- fg_srandom();
-
return ( 1 );
}
fgPrintf( FG_GENERAL, FG_INFO, "Initialize Subsystems\n");
fgPrintf( FG_GENERAL, FG_INFO, "========== ==========\n");
+ // 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.
FG_Dy_cg = 0.000000E+00;
FG_Dz_cg = 0.000000E+00;
- // Set initial position and slew parameters
- // fgSlewInit(-398391.3, 120070.41, 244, 3.1415); // GLOBE Airport
- // fgSlewInit(-335340,162540, 15, 4.38);
- // fgSlewInit(-398673.28,120625.64, 53, 4.38);
-
// Initialize the event manager
fgEventInit();
- // Dump event stats every 60 seconds
+ // Output event stats every 60 seconds
fgEventRegister( "fgEventPrintStats()", fgEventPrintStats,
FG_EVENT_READY, 60000 );
- // Initialize "time"
+ // Initialize the time dependent variables
fgTimeInit(t);
fgTimeUpdate(f, t);
- // fgViewUpdate() needs the sun in the right place, while
- // fgUpdateSunPos() needs to know the view position. I'll get
- // around this interdependency for now by calling fgUpdateSunPos()
- // once, then moving on with normal initialization.
- fgUpdateSunPos();
-
// Initialize view parameters
+ // ---->
fgViewInit(v);
fgViewUpdate(f, v, l);
+ // Initialize the orbital elements of sun, moon and mayor planets
+ fgSolarSystemInit(*t);
+
+ // Initialize the Stars subsystem
+ if( fgStarsInit() ) {
+ // Stars initialized ok.
+ } else {
+ fgPrintf( FG_GENERAL, FG_EXIT, "Error in Stars initialization!\n" );
+ }
+
+ // Initialize the planetary subsystem
+ fgEventRegister("fgPlanetsInit()", fgPlanetsInit, FG_EVENT_READY, 600000);
+
+ // Initialize the sun's position
+ fgEventRegister("fgSunInit()", fgSunInit, FG_EVENT_READY, 30000 );
+
+ // Intialize the moon's position
+ fgEventRegister( "fgMoonInit()", fgMoonInit, FG_EVENT_READY, 600000 );
+
+ // fgUpdateSunPos() needs a few position and view parameters set
+ // so it can calculate local relative sun angle and a few other
+ // things for correctly orienting the sky.
+ // ---->
+ fgUpdateSunPos();
+
// Initialize Lighting interpolation tables
+ // ---->
fgLightInit();
// update the lighting parameters (based on sun angle)
fgPrintf( FG_GENERAL, FG_EXIT, "Error in Cockpit initialization!\n" );
}
- // Initialize the orbital elements of sun, moon and mayor planets
- fgSolarSystemInit(*t);
-
- // Initialize the Stars subsystem
- if( fgStarsInit() ) {
- // Stars initialized ok.
- } else {
- fgPrintf( FG_GENERAL, FG_EXIT, "Error in Stars initialization!\n" );
- }
-
- // Initialize the planetary subsystem
- fgEventRegister("fgPlanetsInit()", fgPlanetsInit, FG_EVENT_READY, 600000);
-
- // Initialize the sun's position
- fgEventRegister("fgSunInit()", fgSunInit, FG_EVENT_READY, 30000 );
-
- // Intialize the moon's position
- fgEventRegister( "fgMoonInit()", fgMoonInit, FG_EVENT_READY, 600000 );
-
// Initialize the "sky"
+ // ---->
fgSkyInit();
// Initialize the Scenery Management subsystem
// I'm just sticking this here for now, it should probably move
// eventually
- // cur_elev = mesh_altitude(FG_Longitude * RAD_TO_DEG * 3600.0,
- // FG_Latitude * RAD_TO_DEG * 3600.0);
- // fgPrintf( FG_GENERAL, FG_INFO,
- // "True ground elevation is %.2f meters here.\n",
- // cur_elev);
-
- cur_elev = FG_Runway_altitude * FEET_TO_METER;
- if ( cur_elev > -9990.0 ) {
- FG_Runway_altitude = cur_elev * METER_TO_FEET;
- }
+ 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;
- }
+ if ( FG_Altitude < FG_Runway_altitude ) {
+ FG_Altitude = FG_Runway_altitude + 3.758099;
+ }
- fgPrintf(FG_GENERAL, FG_INFO,
+ 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
fgFlightModelInit( FG_LARCSIM, f, 1.0 / DEFAULT_MODEL_HZ );
- // To HUD or not to HUD - Now a command line issue
- // show_hud = 0;
-
// Let's not show the instrument panel
displayInstruments = 0;
// Autopilot init added here, by Jeff Goeke-Smith
fgAPInit(¤t_aircraft);
- // One more try here to get the sky synced up
- fgSkyColorsInit();
-
fgPrintf(FG_GENERAL, FG_INFO,"\n");
return(1);
// $Log$
+// Revision 1.4 1998/04/25 20:24:01 curt
+// Cleaned up initialization sequence to eliminate interdependencies
+// between sun position, lighting, and view position. This creates a
+// valid single pass initialization path.
+//
// Revision 1.3 1998/04/25 15:11:11 curt
// Added an command line option to set starting position based on airport ID.
//
-/**************************************************************************
- * views.c -- data structures and routines for managing and view parameters.
- *
- * Written by Curtis Olson, started August 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)
- **************************************************************************/
+//
+// views.cxx -- data structures and routines for managing and view parameters.
+//
+// Written by Curtis Olson, started August 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)
+
#ifdef HAVE_CONFIG_H
#include "views.hxx"
-/* This is a record containing current view parameters */
+// This is a record containing current view parameters
struct fgVIEW current_view;
-/* Initialize a view structure */
+// Initialize a view structure
void fgViewInit(struct fgVIEW *v) {
fgPrintf( FG_VIEW, FG_INFO, "Initializing View parameters\n");
}
-/* Update the view parameters */
+// Update the view parameters
void fgViewUpdate(fgFLIGHT *f, struct fgVIEW *v, fgLIGHT *l) {
MAT3vec vec, forward, v0, minus_z;
MAT3mat R, TMP, UP, LOCAL, VIEW;
scenery.center.y = scenery.next_center.y;
scenery.center.z = scenery.next_center.z;
- /* calculate the cartesion coords of the current lat/lon/0 elev */
+ // calculate the cartesion coords of the current lat/lon/0 elev
v->cur_zero_elev = fgPolarToCart(FG_Longitude, FG_Lat_geocentric,
FG_Sea_level_radius * FEET_TO_METER);
v->cur_zero_elev.x -= scenery.center.x;
v->cur_zero_elev.y -= scenery.center.y;
v->cur_zero_elev.z -= scenery.center.z;
- /* calculate view position in current FG view coordinate system */
+ // calculate view position in current FG view coordinate system
v->abs_view_pos = fgPolarToCart(FG_Longitude, FG_Lat_geocentric,
FG_Radius_to_vehicle * FEET_TO_METER + 1.0);
v->view_pos.x = v->abs_view_pos.x - scenery.center.x;
fgPrintf( FG_VIEW, FG_DEBUG, "Relative view pos = %.4f, %.4f, %.4f\n",
v->view_pos.x, v->view_pos.y, v->view_pos.z);
- /* make a vector to the current view position */
- MAT3_SET_VEC(v0, v->view_pos.x, v->view_pos.y, v->view_pos.z);
-
- /* calculate vector to sun's position on the earth's surface */
- v->to_sun[0] = l->fg_sunpos.x - (v->view_pos.x + scenery.center.x);
- v->to_sun[1] = l->fg_sunpos.y - (v->view_pos.y + scenery.center.y);
- v->to_sun[2] = l->fg_sunpos.z - (v->view_pos.z + scenery.center.z);
- /* printf("Vector to sun = %.2f %.2f %.2f\n",
- v->to_sun[0], v->to_sun[1], v->to_sun[2]); */
-
- /* Derive the LOCAL aircraft rotation matrix (roll, pitch, yaw) */
+ // Derive the LOCAL aircraft rotation matrix (roll, pitch, yaw)
MAT3_SET_VEC(vec, 0.0, 0.0, 1.0);
MAT3rotate(R, vec, FG_Phi);
- /* printf("Roll matrix\n"); */
- /* MAT3print(R, stdout); */
+ // printf("Roll matrix\n");
+ // MAT3print(R, stdout);
MAT3_SET_VEC(vec, 0.0, 1.0, 0.0);
- /* MAT3mult_vec(vec, vec, R); */
+ // MAT3mult_vec(vec, vec, R);
MAT3rotate(TMP, vec, FG_Theta);
- /* printf("Pitch matrix\n"); */
- /* MAT3print(TMP, stdout); */
+ // printf("Pitch matrix\n");
+ // MAT3print(TMP, stdout);
MAT3mult(R, R, TMP);
MAT3_SET_VEC(vec, 1.0, 0.0, 0.0);
- /* MAT3mult_vec(vec, vec, R); */
- /* MAT3rotate(TMP, vec, FG_Psi - FG_PI_2); */
+ // MAT3mult_vec(vec, vec, R);
+ // MAT3rotate(TMP, vec, FG_Psi - FG_PI_2);
MAT3rotate(TMP, vec, -FG_Psi);
- /* printf("Yaw matrix\n");
- MAT3print(TMP, stdout); */
+ // printf("Yaw matrix\n");
+ // MAT3print(TMP, stdout);
MAT3mult(LOCAL, R, TMP);
- /* printf("LOCAL matrix\n"); */
- /* MAT3print(LOCAL, stdout); */
+ // printf("LOCAL matrix\n");
+ // MAT3print(LOCAL, stdout);
- /* Derive the local UP transformation matrix based on *geodetic*
- * coordinates */
+ // Derive the local UP transformation matrix based on *geodetic*
+ // coordinates
MAT3_SET_VEC(vec, 0.0, 0.0, 1.0);
- MAT3rotate(R, vec, FG_Longitude); /* R = rotate about Z axis */
- /* printf("Longitude matrix\n"); */
- /* MAT3print(R, stdout); */
+ MAT3rotate(R, vec, FG_Longitude); // R = rotate about Z axis
+ // printf("Longitude matrix\n");
+ // MAT3print(R, stdout);
MAT3_SET_VEC(vec, 0.0, 1.0, 0.0);
MAT3mult_vec(vec, vec, R);
- MAT3rotate(TMP, vec, -FG_Latitude); /* TMP = rotate about X axis */
- /* printf("Latitude matrix\n"); */
- /* MAT3print(TMP, stdout); */
+ MAT3rotate(TMP, vec, -FG_Latitude); // TMP = rotate about X axis
+ // printf("Latitude matrix\n");
+ // MAT3print(TMP, stdout);
MAT3mult(UP, R, TMP);
- /* printf("Local up matrix\n"); */
- /* MAT3print(UP, stdout); */
+ // printf("Local up matrix\n");
+ // MAT3print(UP, stdout);
MAT3_SET_VEC(v->local_up, 1.0, 0.0, 0.0);
MAT3mult_vec(v->local_up, v->local_up, UP);
- /* printf("Local Up = (%.4f, %.4f, %.4f)\n",
- v->local_up[0], v->local_up[1], v->local_up[2]); */
+ // printf( "Local Up = (%.4f, %.4f, %.4f)\n",
+ // v->local_up[0], v->local_up[1], v->local_up[2]);
- /* Alternative method to Derive local up vector based on
- * *geodetic* coordinates */
- /* alt_up = fgPolarToCart(FG_Longitude, FG_Latitude, 1.0); */
- /* printf(" Alt Up = (%.4f, %.4f, %.4f)\n",
- alt_up.x, alt_up.y, alt_up.z); */
+ // Alternative method to Derive local up vector based on
+ // *geodetic* coordinates
+ // alt_up = fgPolarToCart(FG_Longitude, FG_Latitude, 1.0);
+ // printf( " Alt Up = (%.4f, %.4f, %.4f)\n",
+ // alt_up.x, alt_up.y, alt_up.z);
- /* Calculate the VIEW matrix */
+ // Calculate the VIEW matrix
MAT3mult(VIEW, LOCAL, UP);
- /* printf("VIEW matrix\n"); */
- /* MAT3print(VIEW, stdout); */
+ // printf("VIEW matrix\n");
+ // MAT3print(VIEW, stdout);
- /* generate the current up, forward, and fwrd-view vectors */
+ // generate the current up, forward, and fwrd-view vectors
MAT3_SET_VEC(vec, 1.0, 0.0, 0.0);
MAT3mult_vec(v->view_up, vec, VIEW);
MAT3_SET_VEC(vec, 0.0, 0.0, 1.0);
MAT3mult_vec(forward, vec, VIEW);
- /* printf("Forward vector is (%.2f,%.2f,%.2f)\n", forward[0], forward[1],
- forward[2]); */
+ // printf( "Forward vector is (%.2f,%.2f,%.2f)\n", forward[0], forward[1],
+ // forward[2]);
MAT3rotate(TMP, v->view_up, v->view_offset);
MAT3mult_vec(v->view_forward, forward, TMP);
- /* Given a vector from the view position to the point on the
- * earth's surface the sun is directly over, map into onto the
- * local plane representing "horizontal". */
- map_vec_onto_cur_surface_plane(v->local_up, v0, v->to_sun,
- v->surface_to_sun);
- MAT3_NORMALIZE_VEC(v->surface_to_sun, ntmp);
- /* printf("Surface direction to sun is %.2f %.2f %.2f\n",
- v->surface_to_sun[0], v->surface_to_sun[1], v->surface_to_sun[2]); */
- /* printf("Should be close to zero = %.2f\n",
- MAT3_DOT_PRODUCT(v->local_up, v->surface_to_sun)); */
-
- /* Given a vector pointing straight down (-Z), map into onto the
- * local plane representing "horizontal". This should give us the
- * local direction for moving "south". */
+ // make a vector to the current view position
+ MAT3_SET_VEC(v0, v->view_pos.x, v->view_pos.y, v->view_pos.z);
+
+ // Given a vector pointing straight down (-Z), map into onto the
+ // local plane representing "horizontal". This should give us the
+ // local direction for moving "south".
MAT3_SET_VEC(minus_z, 0.0, 0.0, -1.0);
map_vec_onto_cur_surface_plane(v->local_up, v0, minus_z, v->surface_south);
MAT3_NORMALIZE_VEC(v->surface_south, ntmp);
- /* printf("Surface direction directly south %.2f %.2f %.2f\n",
- v->surface_south[0], v->surface_south[1], v->surface_south[2]); */
+ // printf( "Surface direction directly south %.2f %.2f %.2f\n",
+ // v->surface_south[0], v->surface_south[1], v->surface_south[2]);
- /* now calculate the surface east vector */
+ // now calculate the surface east vector
MAT3rotate(TMP, v->view_up, FG_PI_2);
MAT3mult_vec(v->surface_east, v->surface_south, TMP);
- /* printf("Surface direction directly east %.2f %.2f %.2f\n",
- v->surface_east[0], v->surface_east[1], v->surface_east[2]); */
- /* printf("Should be close to zero = %.2f\n",
- MAT3_DOT_PRODUCT(v->surface_south, v->surface_east)); */
+ // printf( "Surface direction directly east %.2f %.2f %.2f\n",
+ // v->surface_east[0], v->surface_east[1], v->surface_east[2]);
+ // printf( "Should be close to zero = %.2f\n",
+ // MAT3_DOT_PRODUCT(v->surface_south, v->surface_east));
}
-/* $Log$
-/* Revision 1.2 1998/04/24 00:49:22 curt
-/* Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
-/* Trying out some different option parsing code.
-/* Some code reorganization.
-/*
- * Revision 1.1 1998/04/22 13:25:45 curt
- * C++ - ifing the code.
- * Starting a bit of reorganization of lighting code.
- *
- * Revision 1.16 1998/04/18 04:11:29 curt
- * Moved fg_debug to it's own library, added zlib support.
- *
- * Revision 1.15 1998/02/20 00:16:24 curt
- * Thursday's tweaks.
- *
- * Revision 1.14 1998/02/09 15:07:50 curt
- * Minor tweaks.
- *
- * Revision 1.13 1998/02/07 15:29:45 curt
- * Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
- * <chotchkiss@namg.us.anritsu.com>
- *
- * Revision 1.12 1998/01/29 00:50:28 curt
- * Added a view record field for absolute x, y, z position.
- *
- * Revision 1.11 1998/01/27 00:47:58 curt
- * Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
- * system and commandline/config file processing code.
- *
- * Revision 1.10 1998/01/19 19:27:09 curt
- * Merged in make system changes from Bob Kuehne <rpk@sgi.com>
- * This should simplify things tremendously.
- *
- * Revision 1.9 1998/01/13 00:23:09 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 1.8 1997/12/30 22:22:33 curt
- * Further integration of event manager.
- *
- * Revision 1.7 1997/12/30 20:47:45 curt
- * Integrated new event manager with subsystem initializations.
- *
- * Revision 1.6 1997/12/22 04:14:32 curt
- * Aligned sky with sun so dusk/dawn effects can be correct relative to the sun.
- *
- * Revision 1.5 1997/12/18 04:07:02 curt
- * Worked on properly translating and positioning the sky dome.
- *
- * Revision 1.4 1997/12/17 23:13:36 curt
- * Began working on rendering a sky.
- *
- * Revision 1.3 1997/12/15 23:54:50 curt
- * Add xgl wrappers for debugging.
- * Generate terrain normals on the fly.
- *
- * Revision 1.2 1997/12/10 22:37:48 curt
- * Prepended "fg" on the name of all global structures that didn't have it yet.
- * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
- *
- * Revision 1.1 1997/08/27 21:31:17 curt
- * Initial revision.
- *
- */
+// $Log$
+// Revision 1.3 1998/04/25 20:24:02 curt
+// Cleaned up initialization sequence to eliminate interdependencies
+// between sun position, lighting, and view position. This creates a
+// valid single pass initialization path.
+//
+// Revision 1.2 1998/04/24 00:49:22 curt
+// Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
+// Trying out some different option parsing code.
+// Some code reorganization.
+//
+// Revision 1.1 1998/04/22 13:25:45 curt
+// C++ - ifing the code.
+// Starting a bit of reorganization of lighting code.
+//
+// Revision 1.16 1998/04/18 04:11:29 curt
+// Moved fg_debug to it's own library, added zlib support.
+//
+// Revision 1.15 1998/02/20 00:16:24 curt
+// Thursday's tweaks.
+//
+// Revision 1.14 1998/02/09 15:07:50 curt
+// Minor tweaks.
+//
+// Revision 1.13 1998/02/07 15:29:45 curt
+// Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
+// <chotchkiss@namg.us.anritsu.com>
+//
+// Revision 1.12 1998/01/29 00:50:28 curt
+// Added a view record field for absolute x, y, z position.
+//
+// Revision 1.11 1998/01/27 00:47:58 curt
+// Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
+// system and commandline/config file processing code.
+//
+// Revision 1.10 1998/01/19 19:27:09 curt
+// Merged in make system changes from Bob Kuehne <rpk@sgi.com>
+// This should simplify things tremendously.
+//
+// Revision 1.9 1998/01/13 00:23:09 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 1.8 1997/12/30 22:22:33 curt
+// Further integration of event manager.
+//
+// Revision 1.7 1997/12/30 20:47:45 curt
+// Integrated new event manager with subsystem initializations.
+//
+// Revision 1.6 1997/12/22 04:14:32 curt
+// Aligned sky with sun so dusk/dawn effects can be correct relative to the sun.
+//
+// Revision 1.5 1997/12/18 04:07:02 curt
+// Worked on properly translating and positioning the sky dome.
+//
+// Revision 1.4 1997/12/17 23:13:36 curt
+// Began working on rendering a sky.
+//
+// Revision 1.3 1997/12/15 23:54:50 curt
+// Add xgl wrappers for debugging.
+// Generate terrain normals on the fly.
+//
+// Revision 1.2 1997/12/10 22:37:48 curt
+// Prepended "fg" on the name of all global structures that didn't have it yet.
+// i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
+//
+// Revision 1.1 1997/08/27 21:31:17 curt
+// Initial revision.
+//
| Done
--------------------------------------------------------------------------
+4/25/98 - Clean up initialization sequence and eliminate
+ interdependencies between lighting and position.
+
4/23/98 - encapsulate all #include <config.h>'s with #ifdef HAVE_CONFIG_H
4/23/98 - Give all textured polygons ambient and diffuse glMaterial()
| Todo
--------------------------------------------------------------------------
-4/24/98 - Clean up initialization sequence and eliminate
- interdependencies between lighting and position.
+4/25/98 - Roll all of Time/sunpos.cxx into Astro/sun.cxx
+
+4/25/98 - Overhaul view parameter generation ... see if we can piggy
+ back off of larcsim calcs, and consolate potentially
+ redundant code
4/21/98 - Tweak lighting parameter interpolation tables to better fit
"perceived" reality
#if defined( HAVE_GETTIMEOFDAY )
struct timeval current;
struct timezone tz;
- fg_timestamp currtime;
+ // fg_timestamp currtime;
gettimeofday(¤t, &tz);
timestamp->seconds = current.tv_sec;
timestamp->millis = current.tv_usec / 1000;
}
-// Update the time dependent variables
-
+// Update time variables such as gmt, julian date, and sidereal time
void fgTimeUpdate(fgFLIGHT *f, struct fgTIME *t) {
double gst_precise, gst_course;
// $Log$
+// Revision 1.2 1998/04/25 20:24:02 curt
+// Cleaned up initialization sequence to eliminate interdependencies
+// between sun position, lighting, and view position. This creates a
+// valid single pass initialization path.
+//
// Revision 1.1 1998/04/24 00:52:27 curt
// Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
// Fog color fixes.
void timesum(fg_timestamp *res, fg_timestamp *start, long millis);
-// Initialize the time dependent variables
+// Update time variables such as gmt, julian date, and sidereal time
void fgTimeInit(struct fgTIME *t);
// $Log$
+// Revision 1.2 1998/04/25 20:24:03 curt
+// Cleaned up initialization sequence to eliminate interdependencies
+// between sun position, lighting, and view position. This creates a
+// valid single pass initialization path.
+//
// Revision 1.1 1998/04/24 00:52:28 curt
// Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
// Fog color fixes.
/* This routine catches the SIGALRM */
void fgTimerCatch( int dummy ) {
+ int warning_avoider;
+
+ // get past a compiler warning
+ warning_avoider = dummy;
+
/* ignore any SIGALRM's until we come back from our EOM iteration */
signal(SIGALRM, SIG_IGN);
/* $Log$
-/* Revision 1.1 1998/04/24 00:52:29 curt
-/* Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
-/* Fog color fixes.
-/* Separated out lighting calcs into their own file.
+/* Revision 1.2 1998/04/25 20:24:03 curt
+/* Cleaned up initialization sequence to eliminate interdependencies
+/* between sun position, lighting, and view position. This creates a
+/* valid single pass initialization path.
/*
+ * Revision 1.1 1998/04/24 00:52:29 curt
+ * Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
+ * Fog color fixes.
+ * Separated out lighting calcs into their own file.
+ *
* Revision 1.12 1998/04/21 17:01:44 curt
* Fixed a problems where a pointer to a function was being passed around. In
* one place this functions arguments were defined as ( void ) while in another
-/*
- * sunpos.c
- * kirk johnson
- * july 1993
- *
- * code for calculating the position on the earth's surface for which
- * the sun is directly overhead (adapted from _practical astronomy
- * with your calculator, third edition_, peter duffett-smith,
- * cambridge university press, 1988.)
- *
- * RCS $Id$
- *
- * Copyright (C) 1989, 1990, 1993, 1994, 1995 Kirk Lauritz Johnson
- *
- * Parts of the source code (as marked) are:
- * Copyright (C) 1989, 1990, 1991 by Jim Frost
- * Copyright (C) 1992 by Jamie Zawinski <jwz@lucid.com>
- *
- * Permission to use, copy, modify and freely distribute xearth for
- * non-commercial and not-for-profit purposes is hereby granted
- * without fee, provided that both the above copyright notice and this
- * permission notice appear in all copies and in supporting
- * documentation.
- *
- * The author makes no representations about the suitability of this
- * software for any purpose. It is provided "as is" without express or
- * implied warranty.
- *
- * THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT
- * OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
- * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * $Id$
- * (Log is kept at end of this file)
- */
+// sunpos.c (taken from XEarth)
+// kirk johnson
+// july 1993
+//
+// code for calculating the position on the earth's surface for which
+// the sun is directly overhead (adapted from _practical astronomy
+// with your calculator, third edition_, peter duffett-smith,
+// cambridge university press, 1988.)
+//
+// RCS $Id$
+//
+// Copyright (C) 1989, 1990, 1993, 1994, 1995 Kirk Lauritz Johnson
+//
+// Parts of the source code (as marked) are:
+// Copyright (C) 1989, 1990, 1991 by Jim Frost
+// Copyright (C) 1992 by Jamie Zawinski <jwz@lucid.com>
+//
+// Permission to use, copy, modify and freely distribute xearth for
+// non-commercial and not-for-profit purposes is hereby granted
+// without fee, provided that both the above copyright notice and this
+// permission notice appear in all copies and in supporting
+// documentation.
+//
+// The author makes no representations about the suitability of this
+// software for any purpose. It is provided "as is" without express or
+// implied warranty.
+//
+// THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+// INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
+// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT
+// OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+// NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+//
+// $Id$
+// (Log is kept at end of this file)
#ifdef HAVE_CONFIG_H
#include <Math/fg_geodesy.h>
#include <Math/mat3.h>
#include <Math/polar.h>
+#include <Math/vector.h>
+#include <Scenery/scenery.h>
#include "fg_time.hxx"
#include "sunpos.hxx"
}
-/* update the cur_time_params structure with the current sun position */
+// update the cur_time_params structure with the current sun position
void fgUpdateSunPos( void ) {
struct fgLIGHT *l;
struct fgTIME *t;
struct fgVIEW *v;
- MAT3vec nup, nsun;
- /* if the 4th field is 0.0, this specifies a direction ... */
- GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
- /* base sky color */
- GLfloat base_sky_color[4] = {0.60, 0.60, 0.90, 1.0};
- /* base fog color */
- GLfloat base_fog_color[4] = {0.70, 0.70, 0.70, 1.0};
- double sun_gd_lat, sl_radius, temp;
- double x_2, x_4, x_8, x_10;
- double light, ambient, diffuse, sky_brightness;
- static int time_warp = 0;
+ MAT3vec nup, nsun, v0;
+ double sun_gd_lat, sl_radius;
+ double ntmp;
l = &cur_light_params;
t = &cur_time_params;
printf(" Updating Sun position\n");
- time_warp += 0; /* increase this to make the world spin real fast */
-
- fgSunPosition(t->cur_time + time_warp, &l->sun_lon, &sun_gd_lat);
+ fgSunPosition(t->cur_time, &l->sun_lon, &sun_gd_lat);
+ fgSunPosition(t->cur_time, &l->sun_lon, &sun_gd_lat);
fgGeodToGeoc(sun_gd_lat, 0.0, &sl_radius, &l->sun_gc_lat);
l->fg_sunpos = fgPolarToCart(l->sun_lon, l->sun_gc_lat, sl_radius);
- /* printf(" Geodetic lat = %.5f Geocentric lat = %.5f\n", sun_gd_lat,
- t->sun_gc_lat); */
+ printf( " t->cur_time = %ld\n", t->cur_time);
+ printf( " Sun Geodetic lat = %.5f Geocentric lat = %.5f\n",
+ sun_gd_lat, l->sun_gc_lat);
- /* FALSE! (?> the sun position has to be translated just like
- * everything else */
- /* l->sun_vec_inv[0] = l->fg_sunpos.x - scenery_center.x; */
- /* l->sun_vec_inv[1] = l->fg_sunpos.y - scenery_center.y; */
- /* l->sun_vec_inv[2] = l->fg_sunpos.z - scenery_center.z; */
- /* MAT3_SCALE_VEC(l->sun_vec, l->sun_vec_inv, -1.0); */
-
- /* I think this will work better for generating the sun light vector */
+ // I think this will work better for generating the sun light vector
l->sun_vec[0] = l->fg_sunpos.x;
l->sun_vec[1] = l->fg_sunpos.y;
l->sun_vec[2] = l->fg_sunpos.z;
- MAT3_NORMALIZE_VEC(l->sun_vec, temp);
+ MAT3_NORMALIZE_VEC(l->sun_vec, ntmp);
MAT3_SCALE_VEC(l->sun_vec_inv, l->sun_vec, -1.0);
- /* make these are directional light sources only */
+ // make sure these are directional light sources only
l->sun_vec[3] = 0.0;
l->sun_vec_inv[3] = 0.0;
printf(" l->sun_vec = %.2f %.2f %.2f\n", l->sun_vec[0], l->sun_vec[1],
l->sun_vec[2]);
- /* calculate the sun's relative angle to local up */
+ // calculate the sun's relative angle to local up
MAT3_COPY_VEC(nup, v->local_up);
nsun[0] = l->fg_sunpos.x;
nsun[1] = l->fg_sunpos.y;
nsun[2] = l->fg_sunpos.z;
- MAT3_NORMALIZE_VEC(nup, temp);
- MAT3_NORMALIZE_VEC(nsun, temp);
+ MAT3_NORMALIZE_VEC(nup, ntmp);
+ MAT3_NORMALIZE_VEC(nsun, ntmp);
l->sun_angle = acos(MAT3_DOT_PRODUCT(nup, nsun));
printf(" SUN ANGLE relative to current location = %.3f rads.\n",
l->sun_angle);
+
+ // calculate vector to sun's position on the earth's surface
+ v->to_sun[0] = l->fg_sunpos.x - (v->view_pos.x + scenery.center.x);
+ v->to_sun[1] = l->fg_sunpos.y - (v->view_pos.y + scenery.center.y);
+ v->to_sun[2] = l->fg_sunpos.z - (v->view_pos.z + scenery.center.z);
+ // printf( "Vector to sun = %.2f %.2f %.2f\n",
+ // v->to_sun[0], v->to_sun[1], v->to_sun[2]);
+
+ // make a vector to the current view position
+ MAT3_SET_VEC(v0, v->view_pos.x, v->view_pos.y, v->view_pos.z);
+
+ // Given a vector from the view position to the point on the
+ // earth's surface the sun is directly over, map into onto the
+ // local plane representing "horizontal".
+ map_vec_onto_cur_surface_plane(v->local_up, v0, v->to_sun,
+ v->surface_to_sun);
+ MAT3_NORMALIZE_VEC(v->surface_to_sun, ntmp);
+ // printf("Surface direction to sun is %.2f %.2f %.2f\n",
+ // v->surface_to_sun[0], v->surface_to_sun[1], v->surface_to_sun[2]);
+ // printf("Should be close to zero = %.2f\n",
+ // MAT3_DOT_PRODUCT(v->local_up, v->surface_to_sun));
}
-/* $Log$
-/* Revision 1.2 1998/04/24 00:52:31 curt
-/* Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
-/* Fog color fixes.
-/* Separated out lighting calcs into their own file.
-/*
- * Revision 1.1 1998/04/22 13:24:07 curt
- * C++ - ifiing the code a bit.
- * Starting to reorginize some of the lighting calcs to use a table lookup.
- *
- * Revision 1.27 1998/04/03 22:12:57 curt
- * Converting to Gnu autoconf system.
- * Centralized time handling differences.
- *
- * Revision 1.26 1998/02/23 19:08:00 curt
- * Incorporated Durk's Astro/ tweaks. Includes unifying the sun position
- * calculation code between sun display, and other FG sections that use this
- * for things like lighting.
- *
- * Revision 1.25 1998/02/09 15:07:53 curt
- * Minor tweaks.
- *
- * Revision 1.24 1998/01/27 00:48:07 curt
- * Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
- * system and commandline/config file processing code.
- *
- * Revision 1.23 1998/01/19 19:27:21 curt
- * Merged in make system changes from Bob Kuehne <rpk@sgi.com>
- * This should simplify things tremendously.
- *
- * Revision 1.22 1998/01/19 18:40:40 curt
- * Tons of little changes to clean up the code and to remove fatal errors
- * when building with the c++ compiler.
- *
- * Revision 1.21 1997/12/30 23:10:19 curt
- * Calculate lighting parameters here.
- *
- * Revision 1.20 1997/12/30 22:22:43 curt
- * Further integration of event manager.
- *
- * Revision 1.19 1997/12/30 20:47:59 curt
- * Integrated new event manager with subsystem initializations.
- *
- * Revision 1.18 1997/12/23 04:58:40 curt
- * Tweaked the sky coloring a bit to build in structures to allow finer rgb
- * control.
- *
- * Revision 1.17 1997/12/15 23:55:08 curt
- * Add xgl wrappers for debugging.
- * Generate terrain normals on the fly.
- *
- * Revision 1.16 1997/12/11 04:43:57 curt
- * Fixed sun vector and lighting problems. I thing the moon is now lit
- * correctly.
- *
- * Revision 1.15 1997/12/10 22:37:55 curt
- * Prepended "fg" on the name of all global structures that didn't have it yet.
- * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
- *
- * Revision 1.14 1997/12/09 04:25:39 curt
- * Working on adding a global lighting params structure.
- *
- * Revision 1.13 1997/11/25 19:25:42 curt
- * Changes to integrate Durk's moon/sun code updates + clean up.
- *
- * Revision 1.12 1997/11/15 18:15:39 curt
- * Reverse direction of sun vector, so object normals can be more normal.
- *
- * Revision 1.11 1997/10/28 21:07:21 curt
- * Changed GLUT/ -> Main/
- *
- * Revision 1.10 1997/09/13 02:00:09 curt
- * Mostly working on stars and generating sidereal time for accurate star
- * placement.
- *
- * Revision 1.9 1997/09/05 14:17:31 curt
- * More tweaking with stars.
- *
- * Revision 1.8 1997/09/05 01:36:04 curt
- * Working on getting stars right.
- *
- * Revision 1.7 1997/09/04 02:17:40 curt
- * Shufflin' stuff.
- *
- * Revision 1.6 1997/08/27 03:30:37 curt
- * Changed naming scheme of basic shared structures.
- *
- * Revision 1.5 1997/08/22 21:34:41 curt
- * Doing a bit of reorganizing and house cleaning.
- *
- * Revision 1.4 1997/08/19 23:55:09 curt
- * Worked on better simulating real lighting.
- *
- * Revision 1.3 1997/08/13 20:23:49 curt
- * The interface to sunpos now updates a global structure rather than returning
- * current sun position.
- *
- * Revision 1.2 1997/08/06 00:24:32 curt
- * Working on correct real time sun lighting.
- *
- * Revision 1.1 1997/08/01 15:27:56 curt
- * Initial revision.
- *
- */
+// $Log$
+// Revision 1.3 1998/04/25 20:24:03 curt
+// Cleaned up initialization sequence to eliminate interdependencies
+// between sun position, lighting, and view position. This creates a
+// valid single pass initialization path.
+//
+// Revision 1.2 1998/04/24 00:52:31 curt
+// Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
+// Fog color fixes.
+// Separated out lighting calcs into their own file.
+//
+// Revision 1.1 1998/04/22 13:24:07 curt
+// C++ - ifiing the code a bit.
+// Starting to reorginize some of the lighting calcs to use a table lookup.
+//
+// Revision 1.27 1998/04/03 22:12:57 curt
+// Converting to Gnu autoconf system.
+// Centralized time handling differences.
+//
+// Revision 1.26 1998/02/23 19:08:00 curt
+// Incorporated Durk's Astro/ tweaks. Includes unifying the sun position
+// calculation code between sun display, and other FG sections that use this
+// for things like lighting.
+//
+// Revision 1.25 1998/02/09 15:07:53 curt
+// Minor tweaks.
+//
+// Revision 1.24 1998/01/27 00:48:07 curt
+// Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
+// system and commandline/config file processing code.
+//
+// Revision 1.23 1998/01/19 19:27:21 curt
+// Merged in make system changes from Bob Kuehne <rpk@sgi.com>
+// This should simplify things tremendously.
+//
+// Revision 1.22 1998/01/19 18:40:40 curt
+// Tons of little changes to clean up the code and to remove fatal errors
+// when building with the c++ compiler.
+//
+// Revision 1.21 1997/12/30 23:10:19 curt
+// Calculate lighting parameters here.
+//
+// Revision 1.20 1997/12/30 22:22:43 curt
+// Further integration of event manager.
+//
+// Revision 1.19 1997/12/30 20:47:59 curt
+// Integrated new event manager with subsystem initializations.
+//
+// Revision 1.18 1997/12/23 04:58:40 curt
+// Tweaked the sky coloring a bit to build in structures to allow finer rgb
+// control.
+//
+// Revision 1.17 1997/12/15 23:55:08 curt
+// Add xgl wrappers for debugging.
+// Generate terrain normals on the fly.
+//
+// Revision 1.16 1997/12/11 04:43:57 curt
+// Fixed sun vector and lighting problems. I thing the moon is now lit
+// correctly.
+//
+// Revision 1.15 1997/12/10 22:37:55 curt
+// Prepended "fg" on the name of all global structures that didn't have it yet.
+// i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
+//
+// Revision 1.14 1997/12/09 04:25:39 curt
+// Working on adding a global lighting params structure.
+//
+// Revision 1.13 1997/11/25 19:25:42 curt
+// Changes to integrate Durk's moon/sun code updates + clean up.
+//
+// Revision 1.12 1997/11/15 18:15:39 curt
+// Reverse direction of sun vector, so object normals can be more normal.
+//
+// Revision 1.11 1997/10/28 21:07:21 curt
+// Changed GLUT/ -> Main/
+//
+// Revision 1.10 1997/09/13 02:00:09 curt
+// Mostly working on stars and generating sidereal time for accurate star
+// placement.
+//
+// Revision 1.9 1997/09/05 14:17:31 curt
+// More tweaking with stars.
+//
+// Revision 1.8 1997/09/05 01:36:04 curt
+// Working on getting stars right.
+//
+// Revision 1.7 1997/09/04 02:17:40 curt
+// Shufflin' stuff.
+//
+// Revision 1.6 1997/08/27 03:30:37 curt
+// Changed naming scheme of basic shared structures.
+//
+// Revision 1.5 1997/08/22 21:34:41 curt
+// Doing a bit of reorganizing and house cleaning.
+//
+// Revision 1.4 1997/08/19 23:55:09 curt
+// Worked on better simulating real lighting.
+//
+// Revision 1.3 1997/08/13 20:23:49 curt
+// The interface to sunpos now updates a global structure rather than returning
+// current sun position.
+//
+// Revision 1.2 1997/08/06 00:24:32 curt
+// Working on correct real time sun lighting.
+//
+// Revision 1.1 1997/08/01 15:27:56 curt
+// Initial revision.
+//
/*
- * sunpos.hxx
+ * sunpos.hxx (taken from XEarth)
* kirk johnson
* july 1993
*
projects / flightgear.git / commitdiff