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C++-ified the comments.

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curt 1998-09-26 13:16:44 +00:00
parent be2f27bd66
commit c67f3fd59c
1 changed files with 317 additions and 319 deletions
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636
Main/GLUTkey.cxx
View file

@ -1,27 +1,25 @@
/**************************************************************************
* GLUTkey.c -- handle GLUT keyboard events
*
* Written by Curtis Olson, 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)
**************************************************************************/
// GLUTkey.cxx -- handle GLUT keyboard events
//
// Written by Curtis Olson, started May 1997.
//
// Copyright (C) 1997 Curtis L. Olson - curt@me.umn.edu
//
// 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
@ -38,8 +36,6 @@
#include <stdlib.h>
#include <Aircraft/aircraft.h>
// #include <Astro/orbits.hxx>
// #include <Astro/sun.hxx>
#include <Astro/solarsystem.hxx>
#include <Astro/sky.hxx>
#include <Autopilot/autopilot.h> // Added autopilot.h to list, Jeff Goeke-Smith
@ -71,7 +67,7 @@ static void local_update_sky_and_lighting_params( void ) {
}
/* Handle keyboard events */
// Handle keyboard events
void GLUTkey(unsigned char k, int x, int y) {
fgCONTROLS *c;
fgFLIGHT *f;
@ -92,48 +88,48 @@ void GLUTkey(unsigned char k, int x, int y) {
if ( GLUT_ACTIVE_ALT && glutGetModifiers() ) {
fgPrintf( FG_INPUT, FG_DEBUG, " SHIFTED\n");
switch (k) {
case 49: /* numeric keypad 1 */
case 49: // numeric keypad 1
v->goal_view_offset = FG_PI * 0.75;
return;
case 50: /* numeric keypad 2 */
case 50: // numeric keypad 2
v->goal_view_offset = FG_PI;
return;
case 51: /* numeric keypad 3 */
case 51: // numeric keypad 3
v->goal_view_offset = FG_PI * 1.25;
return;
case 52: /* numeric keypad 4 */
case 52: // numeric keypad 4
v->goal_view_offset = FG_PI * 0.50;
return;
case 54: /* numeric keypad 6 */
case 54: // numeric keypad 6
v->goal_view_offset = FG_PI * 1.50;
return;
case 55: /* numeric keypad 7 */
case 55: // numeric keypad 7
v->goal_view_offset = FG_PI * 0.25;
return;
case 56: /* numeric keypad 8 */
case 56: // numeric keypad 8
v->goal_view_offset = 0.00;
return;
case 57: /* numeric keypad 9 */
case 57: // numeric keypad 9
v->goal_view_offset = FG_PI * 1.75;
return;
case 72: /* H key */
case 72: // H key
// status = current_options.get_hud_status();
// current_options.set_hud_status(!status);
HUD_brightkey( true );
return;
case 73: /* i key */
case 73: // i key
// Minimal Hud
fgHUDInit2(&current_aircraft);
return;
case 77: /* M key */
case 77: // M key
t->warp -= 60;
local_update_sky_and_lighting_params();
return;
case 84: /* T key */
case 84: // T key
t->warp_delta -= 30;
local_update_sky_and_lighting_params();
return;
case 87: /* W key */
case 87: // W key
#if defined(FX) && !defined(WIN32)
fullscreen = ( !fullscreen );
#if defined(XMESA_FX_FULLSCREEN) && defined(XMESA_FX_WINDOW)
@ -141,7 +137,7 @@ void GLUTkey(unsigned char k, int x, int y) {
#endif
#endif
return;
case 88: /* X key */
case 88: // X key
fov = current_options.get_fov();
fov *= 1.05;
if ( fov > FG_FOV_MAX ) {
@ -150,71 +146,71 @@ void GLUTkey(unsigned char k, int x, int y) {
current_options.set_fov(fov);
v->update_fov = TRUE;
return;
case 90: /* Z key */
tmp = fgWeatherGetVisibility(); /* in meters */
case 90: // Z key
tmp = fgWeatherGetVisibility(); // in meters
tmp /= 1.10;
fgWeatherSetVisibility( tmp );
return;
// autopilot additions
case 65: /* A key */
case 65: // A key
fgAPSetMode(1);
return;
case 83: /* S key */
case 83: // S key
fgAPSetMode(0);
return;
case 68: /* D key */
case 68: // D key
fgAPSetHeading(AP_CURRENT_HEADING);
return;
}
} else {
fgPrintf( FG_INPUT, FG_DEBUG, "\n");
switch (k) {
case 50: /* numeric keypad 2 */
case 50: // numeric keypad 2
fgElevMove(-0.05);
return;
case 56: /* numeric keypad 8 */
case 56: // numeric keypad 8
fgElevMove(0.05);
return;
case 49: /* numeric keypad 1 */
case 49: // numeric keypad 1
fgElevTrimMove(-0.001);
return;
case 55: /* numeric keypad 7 */
case 55: // numeric keypad 7
fgElevTrimMove(0.001);
return;
case 52: /* numeric keypad 4 */
case 52: // numeric keypad 4
fgAileronMove(-0.05);
return;
case 54: /* numeric keypad 6 */
case 54: // numeric keypad 6
fgAileronMove(0.05);
return;
case 48: /* numeric keypad Ins */
case 48: // numeric keypad Ins
fgRudderMove(-0.05);
return;
case 13: /* numeric keypad Enter */
case 13: // numeric keypad Enter
fgRudderMove(0.05);
return;
case 53: /* numeric keypad 5 */
case 53: // numeric keypad 5
fgAileronSet(0.0);
fgElevSet(0.0);
fgRudderSet(0.0);
return;
case 57: /* numeric keypad 9 (Pg Up) */
case 57: // numeric keypad 9 (Pg Up)
fgThrottleMove(0, 0.01);
return;
case 51: /* numeric keypad 3 (Pg Dn) */
case 51: // numeric keypad 3 (Pg Dn)
fgThrottleMove(0, -0.01);
return;
case 104: /* h key */
case 104: // h key
HUD_brightkey( false );
return;
case 105: /* i key */
case 105: // i key
fgHUDInit(&current_aircraft); // normal HUD
return;
case 109: /* m key */
case 109: // m key
t->warp += 60;
local_update_sky_and_lighting_params();
return;
case 112: /* p key */
case 112: // p key
t->pause = !t->pause;
// printf position and attitude information
fgPrintf( FG_INPUT, FG_INFO,
@ -228,11 +224,11 @@ void GLUTkey(unsigned char k, int x, int y) {
FG_Phi * RAD_TO_DEG,
FG_Theta * RAD_TO_DEG);
return;
case 116: /* t key */
case 116: // t key
t->warp_delta += 30;
local_update_sky_and_lighting_params();
return;
case 120: /* X key */
case 120: // X key
fov = current_options.get_fov();
fov /= 1.05;
if ( fov < FG_FOV_MIN ) {
@ -241,12 +237,12 @@ void GLUTkey(unsigned char k, int x, int y) {
current_options.set_fov(fov);
v->update_fov = TRUE;
return;
case 122: /* z key */
tmp = fgWeatherGetVisibility(); /* in meters */
case 122: // z key
tmp = fgWeatherGetVisibility(); // in meters
tmp *= 1.10;
fgWeatherSetVisibility( tmp );
return;
case 27: /* ESC */
case 27: // ESC
// if( fg_DebugOutput ) {
// fclose( fg_DebugOutput );
// }
@ -257,7 +253,7 @@ void GLUTkey(unsigned char k, int x, int y) {
}
/* Handle "special" keyboard events */
// Handle "special" keyboard events
void GLUTspecialkey(int k, int x, int y) {
fgCONTROLS *c;
fgVIEW *v;
@ -271,35 +267,35 @@ void GLUTspecialkey(int k, int x, int y) {
if ( GLUT_ACTIVE_SHIFT && glutGetModifiers() ) {
fgPrintf( FG_INPUT, FG_DEBUG, " SHIFTED\n");
switch (k) {
case GLUT_KEY_END: /* numeric keypad 1 */
case GLUT_KEY_END: // numeric keypad 1
v->goal_view_offset = FG_PI * 0.75;
return;
case GLUT_KEY_DOWN: /* numeric keypad 2 */
case GLUT_KEY_DOWN: // numeric keypad 2
v->goal_view_offset = FG_PI;
return;
case GLUT_KEY_PAGE_DOWN: /* numeric keypad 3 */
case GLUT_KEY_PAGE_DOWN: // numeric keypad 3
v->goal_view_offset = FG_PI * 1.25;
return;
case GLUT_KEY_LEFT: /* numeric keypad 4 */
case GLUT_KEY_LEFT: // numeric keypad 4
v->goal_view_offset = FG_PI * 0.50;
return;
case GLUT_KEY_RIGHT: /* numeric keypad 6 */
case GLUT_KEY_RIGHT: // numeric keypad 6
v->goal_view_offset = FG_PI * 1.50;
return;
case GLUT_KEY_HOME: /* numeric keypad 7 */
case GLUT_KEY_HOME: // numeric keypad 7
v->goal_view_offset = FG_PI * 0.25;
return;
case GLUT_KEY_UP: /* numeric keypad 8 */
case GLUT_KEY_UP: // numeric keypad 8
v->goal_view_offset = 0.00;
return;
case GLUT_KEY_PAGE_UP: /* numeric keypad 9 */
case GLUT_KEY_PAGE_UP: // numeric keypad 9
v->goal_view_offset = FG_PI * 1.75;
return;
}
} else {
fgPrintf( FG_INPUT, FG_DEBUG, "\n");
switch (k) {
case GLUT_KEY_F8: /* F8 toggles fog ... off fastest nicest... */
case GLUT_KEY_F8: // F8 toggles fog ... off fastest nicest...
current_options.cycle_fog();
if ( current_options.get_fog() == fgOPTIONS::FG_FOG_DISABLED ) {
@ -317,7 +313,7 @@ void GLUTspecialkey(int k, int x, int y) {
}
return;
case GLUT_KEY_F9: /* F9 toggles textures on and off... */
case GLUT_KEY_F9: // F9 toggles textures on and off...
if ( material_mgr.get_textures_loaded() ) {
current_options.get_textures() ?
current_options.set_textures(false) :
@ -328,7 +324,7 @@ void GLUTspecialkey(int k, int x, int y) {
"No textures loaded, cannot toggle\n" );
}
return;
case GLUT_KEY_F10: /* F10 toggles menu on and off... */
case GLUT_KEY_F10: // F10 toggles menu on and off...
fgPrintf(FG_INPUT, FG_INFO, "Invoking call back function");
hideMenuButton ->
setValue ((int) !(hideMenuButton -> getValue() ) );
@ -347,27 +343,27 @@ void GLUTspecialkey(int k, int x, int y) {
case GLUT_KEY_RIGHT:
fgAileronMove(0.05);
return;
case GLUT_KEY_HOME: /* numeric keypad 1 */
case GLUT_KEY_HOME: // numeric keypad 1
fgElevTrimMove(0.001);
return;
case GLUT_KEY_END: /* numeric keypad 7 */
case GLUT_KEY_END: // numeric keypad 7
fgElevTrimMove(-0.001);
return;
case GLUT_KEY_INSERT: /* numeric keypad Ins */
case GLUT_KEY_INSERT: // numeric keypad Ins
fgRudderMove(-0.05);
return;
case 13: /* numeric keypad Enter */
case 13: // numeric keypad Enter
fgRudderMove(0.05);
return;
case 53: /* numeric keypad 5 */
case 53: // numeric keypad 5
fgAileronSet(0.0);
fgElevSet(0.0);
fgRudderSet(0.0);
return;
case GLUT_KEY_PAGE_UP: /* numeric keypad 9 (Pg Up) */
case GLUT_KEY_PAGE_UP: // numeric keypad 9 (Pg Up)
fgThrottleMove(0, 0.01);
return;
case GLUT_KEY_PAGE_DOWN: /* numeric keypad 3 (Pg Dn) */
case GLUT_KEY_PAGE_DOWN: // numeric keypad 3 (Pg Dn)
fgThrottleMove(0, -0.01);
return;
}
@ -375,237 +371,239 @@ void GLUTspecialkey(int k, int x, int y) {
}
/* $Log$
/* Revision 1.23 1998/09/17 18:35:30 curt
/* Added F8 to toggle fog and F9 to toggle texturing.
/*
* Revision 1.22 1998/09/15 04:27:27 curt
* Changes for new Astro code.
*
* Revision 1.21 1998/08/29 13:09:25 curt
* Changes to event manager from Bernie Bright.
*
* Revision 1.20 1998/08/24 20:11:12 curt
* Added i/I to toggle full vs. minimal HUD.
* Added a --hud-tris vs --hud-culled option.
* Moved options accessor funtions to options.hxx.
*
* Revision 1.19 1998/08/05 00:19:33 curt
* Added a local routine to update lighting params every frame when time is
* accelerated.
*
* Revision 1.18 1998/07/30 23:48:24 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 1.17 1998/07/27 18:41:23 curt
* Added a pause command "p"
* Fixed some initialization order problems between pui and glut.
* Added an --enable/disable-sound option.
*
* Revision 1.16 1998/07/16 17:33:34 curt
* "H" / "h" now control hud brightness as well with off being one of the
* states.
* Better checking for xmesa/fx 3dfx fullscreen/window support for deciding
* whether or not to build in the feature.
* Translucent menu support.
* HAVE_AUDIO_SUPPORT -> ENABLE_AUDIO_SUPPORT
* Use fork() / wait() for playing mp3 init music in background under unix.
* Changed default tile diameter to 5.
*
* Revision 1.15 1998/07/13 21:01:34 curt
* Wrote access functions for current fgOPTIONS.
*
* Revision 1.14 1998/07/06 02:42:02 curt
* Added support for switching between fullscreen and window mode for
* Mesa/3dfx/glide.
*
* Added a basic splash screen. Restructured the main loop and top level
* initialization routines to do this.
*
* Hacked in some support for playing a startup mp3 sound file while rest
* of sim initializes. Currently only works in Unix using the mpg123 player.
* Waits for the mpg123 player to finish before initializing internal
* sound drivers.
*
* Revision 1.13 1998/06/27 16:54:32 curt
* Replaced "extern displayInstruments" with a entry in fgOPTIONS.
* Don't change the view port when displaying the panel.
*
* Revision 1.12 1998/06/12 14:27:26 curt
* Pui -> PUI, Gui -> GUI.
*
* Revision 1.11 1998/06/12 00:57:38 curt
* Added support for Pui/Gui.
* Converted fog to GL_FOG_EXP2.
* Link to static simulator parts.
* Update runfg.bat to try to be a little smarter.
*
* Revision 1.10 1998/05/27 02:24:05 curt
* View optimizations by Norman Vine.
*
* Revision 1.9 1998/05/16 13:05:21 curt
* Added limits to fov.
*
* Revision 1.8 1998/05/13 18:29:56 curt
* Added a keyboard binding to dynamically adjust field of view.
* Added a command line option to specify fov.
* Adjusted terrain color.
* Root path info moved to fgOPTIONS.
* Added ability to parse options out of a config file.
*
* Revision 1.7 1998/05/07 23:14:14 curt
* Added "D" key binding to set autopilot heading.
* Made frame rate calculation average out over last 10 frames.
* Borland C++ floating point exception workaround.
* Added a --tile-radius=n option.
*
* Revision 1.6 1998/04/28 01:20:20 curt
* Type-ified fgTIME and fgVIEW.
* Added a command line option to disable textures.
*
* Revision 1.5 1998/04/25 22:06:29 curt
* Edited cvs log messages in source files ... bad bad bad!
*
* 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.
* Some code reorganization.
*
* Revision 1.1 1998/04/22 13:25:40 curt
* C++ - ifing the code.
* Starting a bit of reorganization of lighting code.
*
* Revision 1.33 1998/04/18 04:11:25 curt
* Moved fg_debug to it's own library, added zlib support.
*
* Revision 1.32 1998/04/14 02:21:01 curt
* Incorporated autopilot heading hold contributed by: Jeff Goeke-Smith
* <jgoeke@voyager.net>
*
* Revision 1.31 1998/04/08 23:34:05 curt
* Patch from Durk to fix trim reversal with numlock key active.
*
* Revision 1.30 1998/04/03 22:09:02 curt
* Converting to Gnu autoconf system.
*
* Revision 1.29 1998/02/07 15:29:40 curt
* Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
* <chotchkiss@namg.us.anritsu.com>
*
* Revision 1.28 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 1.27 1998/01/27 00:47:55 curt
* Incorporated Paul Bleisch's <pbleisch@acm.org> new debug message
* system and commandline/config file processing code.
*
* Revision 1.26 1998/01/19 19:27:07 curt
* Merged in make system changes from Bob Kuehne <rpk@sgi.com>
* This should simplify things tremendously.
*
* Revision 1.25 1998/01/05 18:44:34 curt
* Add an option to advance/decrease time from keyboard.
*
* Revision 1.24 1997/12/30 16:36:46 curt
* Merged in Durk's changes ...
*
* Revision 1.23 1997/12/15 23:54:44 curt
* Add xgl wrappers for debugging.
* Generate terrain normals on the fly.
*
* Revision 1.22 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 1.21 1997/08/27 21:32:23 curt
* Restructured view calculation code. Added stars.
*
* Revision 1.20 1997/08/27 03:30:13 curt
* Changed naming scheme of basic shared structures.
*
* Revision 1.19 1997/08/25 20:27:21 curt
* Merged in initial HUD and Joystick code.
*
* Revision 1.18 1997/08/22 21:34:38 curt
* Doing a bit of reorganizing and house cleaning.
*
* Revision 1.17 1997/07/19 22:34:02 curt
* Moved PI definitions to ../constants.h
* Moved random() stuff to ../Utils/ and renamed fg_random()
*
* Revision 1.16 1997/07/18 23:41:24 curt
* Tweaks for building with Cygnus Win32 compiler.
*
* Revision 1.15 1997/07/16 20:04:47 curt
* Minor tweaks to aid Win32 port.
*
* Revision 1.14 1997/07/12 03:50:20 curt
* Added an #include <Windows32/Base.h> to help compiling for Win32
*
* Revision 1.13 1997/06/25 15:39:46 curt
* Minor changes to compile with rsxnt/win32.
*
* Revision 1.12 1997/06/21 17:12:52 curt
* Capitalized subdirectory names.
*
* Revision 1.11 1997/06/18 04:10:31 curt
* A couple more runway tweaks ...
*
* Revision 1.10 1997/06/18 02:21:23 curt
* Hacked in a runway
*
* Revision 1.9 1997/06/02 03:40:06 curt
* A tiny bit more view tweaking.
*
* Revision 1.8 1997/06/02 03:01:38 curt
* Working on views (side, front, back, transitions, etc.)
*
* Revision 1.7 1997/05/31 19:16:25 curt
* Elevator trim added.
*
* Revision 1.6 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 1.5 1997/05/30 23:26:19 curt
* Added elevator/aileron controls.
*
* 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 15:57:50 curt
* Renamed due to added GLUT support.
*
* Revision 1.2 1997/05/19 18:22:41 curt
* Parameter tweaking ... starting to stub in fog support.
*
* Revision 1.1 1997/05/16 16:05:51 curt
* Initial revision.
*
*/
// $Log$
// Revision 1.24 1998/09/26 13:16:44 curt
// C++-ified the comments.
//
// Revision 1.23 1998/09/17 18:35:30 curt
// Added F8 to toggle fog and F9 to toggle texturing.
//
// Revision 1.22 1998/09/15 04:27:27 curt
// Changes for new Astro code.
//
// Revision 1.21 1998/08/29 13:09:25 curt
// Changes to event manager from Bernie Bright.
//
// Revision 1.20 1998/08/24 20:11:12 curt
// Added i/I to toggle full vs. minimal HUD.
// Added a --hud-tris vs --hud-culled option.
// Moved options accessor funtions to options.hxx.
//
// Revision 1.19 1998/08/05 00:19:33 curt
// Added a local routine to update lighting params every frame when time is
// accelerated.
//
// Revision 1.18 1998/07/30 23:48:24 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 1.17 1998/07/27 18:41:23 curt
// Added a pause command "p"
// Fixed some initialization order problems between pui and glut.
// Added an --enable/disable-sound option.
//
// Revision 1.16 1998/07/16 17:33:34 curt
// "H" / "h" now control hud brightness as well with off being one of the
// states.
// Better checking for xmesa/fx 3dfx fullscreen/window support for deciding
// whether or not to build in the feature.
// Translucent menu support.
// HAVE_AUDIO_SUPPORT -> ENABLE_AUDIO_SUPPORT
// Use fork() / wait() for playing mp3 init music in background under unix.
// Changed default tile diameter to 5.
//
// Revision 1.15 1998/07/13 21:01:34 curt
// Wrote access functions for current fgOPTIONS.
//
// Revision 1.14 1998/07/06 02:42:02 curt
// Added support for switching between fullscreen and window mode for
// Mesa/3dfx/glide.
//
// Added a basic splash screen. Restructured the main loop and top level
// initialization routines to do this.
//
// Hacked in some support for playing a startup mp3 sound file while rest
// of sim initializes. Currently only works in Unix using the mpg123 player.
// Waits for the mpg123 player to finish before initializing internal
// sound drivers.
//
// Revision 1.13 1998/06/27 16:54:32 curt
// Replaced "extern displayInstruments" with a entry in fgOPTIONS.
// Don't change the view port when displaying the panel.
//
// Revision 1.12 1998/06/12 14:27:26 curt
// Pui -> PUI, Gui -> GUI.
//
// Revision 1.11 1998/06/12 00:57:38 curt
// Added support for Pui/Gui.
// Converted fog to GL_FOG_EXP2.
// Link to static simulator parts.
// Update runfg.bat to try to be a little smarter.
//
// Revision 1.10 1998/05/27 02:24:05 curt
// View optimizations by Norman Vine.
//
// Revision 1.9 1998/05/16 13:05:21 curt
// Added limits to fov.
//
// Revision 1.8 1998/05/13 18:29:56 curt
// Added a keyboard binding to dynamically adjust field of view.
// Added a command line option to specify fov.
// Adjusted terrain color.
// Root path info moved to fgOPTIONS.
// Added ability to parse options out of a config file.
//
// Revision 1.7 1998/05/07 23:14:14 curt
// Added "D" key binding to set autopilot heading.
// Made frame rate calculation average out over last 10 frames.
// Borland C++ floating point exception workaround.
// Added a --tile-radius=n option.
//
// Revision 1.6 1998/04/28 01:20:20 curt
// Type-ified fgTIME and fgVIEW.
// Added a command line option to disable textures.
//
// Revision 1.5 1998/04/25 22:06:29 curt
// Edited cvs log messages in source files ... bad bad bad!
//
// 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.
// Some code reorganization.
//
// Revision 1.1 1998/04/22 13:25:40 curt
// C++ - ifing the code.
// Starting a bit of reorganization of lighting code.
//
// Revision 1.33 1998/04/18 04:11:25 curt
// Moved fg_debug to it's own library, added zlib support.
//
// Revision 1.32 1998/04/14 02:21:01 curt
// Incorporated autopilot heading hold contributed by: Jeff Goeke-Smith
// <jgoeke@voyager.net>
//
// Revision 1.31 1998/04/08 23:34:05 curt
// Patch from Durk to fix trim reversal with numlock key active.
//
// Revision 1.30 1998/04/03 22:09:02 curt
// Converting to Gnu autoconf system.
//
// Revision 1.29 1998/02/07 15:29:40 curt
// Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
// <chotchkiss@namg.us.anritsu.com>
//
// Revision 1.28 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 1.27 1998/01/27 00:47:55 curt
// Incorporated Paul Bleisch's <pbleisch@acm.org> new debug message
// system and commandline/config file processing code.
//
// Revision 1.26 1998/01/19 19:27:07 curt
// Merged in make system changes from Bob Kuehne <rpk@sgi.com>
// This should simplify things tremendously.
//
// Revision 1.25 1998/01/05 18:44:34 curt
// Add an option to advance/decrease time from keyboard.
//
// Revision 1.24 1997/12/30 16:36:46 curt
// Merged in Durk's changes ...
//
// Revision 1.23 1997/12/15 23:54:44 curt
// Add xgl wrappers for debugging.
// Generate terrain normals on the fly.
//
// Revision 1.22 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 1.21 1997/08/27 21:32:23 curt
// Restructured view calculation code. Added stars.
//
// Revision 1.20 1997/08/27 03:30:13 curt
// Changed naming scheme of basic shared structures.
//
// Revision 1.19 1997/08/25 20:27:21 curt
// Merged in initial HUD and Joystick code.
//
// Revision 1.18 1997/08/22 21:34:38 curt
// Doing a bit of reorganizing and house cleaning.
//
// Revision 1.17 1997/07/19 22:34:02 curt
// Moved PI definitions to ../constants.h
// Moved random() stuff to ../Utils/ and renamed fg_random()
//
// Revision 1.16 1997/07/18 23:41:24 curt
// Tweaks for building with Cygnus Win32 compiler.
//
// Revision 1.15 1997/07/16 20:04:47 curt
// Minor tweaks to aid Win32 port.
//
// Revision 1.14 1997/07/12 03:50:20 curt
// Added an #include <Windows32/Base.h> to help compiling for Win32
//
// Revision 1.13 1997/06/25 15:39:46 curt
// Minor changes to compile with rsxnt/win32.
//
// Revision 1.12 1997/06/21 17:12:52 curt
// Capitalized subdirectory names.
//
// Revision 1.11 1997/06/18 04:10:31 curt
// A couple more runway tweaks ...
//
// Revision 1.10 1997/06/18 02:21:23 curt
// Hacked in a runway
//
// Revision 1.9 1997/06/02 03:40:06 curt
// A tiny bit more view tweaking.
//
// Revision 1.8 1997/06/02 03:01:38 curt
// Working on views (side, front, back, transitions, etc.)
//
// Revision 1.7 1997/05/31 19:16:25 curt
// Elevator trim added.
//
// Revision 1.6 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 1.5 1997/05/30 23:26:19 curt
// Added elevator/aileron controls.
//
// 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 15:57:50 curt
// Renamed due to added GLUT support.
//
// Revision 1.2 1997/05/19 18:22:41 curt
// Parameter tweaking ... starting to stub in fog support.
//
// Revision 1.1 1997/05/16 16:05:51 curt
// Initial revision.