// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// $Id$
-// (Log is kept at end of this file)
#ifdef HAVE_CONFIG_H
}
-// $Log$
-// Revision 1.21 1999/03/22 02:08:18 curt
-// Changes contributed by Durk Talsma:
-//
-// Here's a few changes I made to fg-0.58 this weekend. Included are the
-// following features:
-// - Sun and moon have a halo
-// - The moon has a light vector, moon_angle, etc. etc. so that we can have
-// some moonlight during the night.
-// - Lot's of small changes tweakes, including some stuff Norman Vine sent
-// me earlier.
-//
-// Revision 1.20 1999/02/26 22:10:11 curt
-// Added initial support for native SGI compilers.
-//
-// Revision 1.19 1999/01/07 20:25:37 curt
-// Portability changes and updates from Bernie Bright.
-//
-// Revision 1.18 1998/12/09 18:50:36 curt
-// Converted "class fgVIEW" to "class FGView" and updated to make data
-// members private and make required accessor functions.
-//
-// Revision 1.17 1998/11/09 23:41:53 curt
-// Log message clean ups.
-//
-// Revision 1.16 1998/11/07 19:07:14 curt
-// Enable release builds using the --without-logging option to the configure
-// script. Also a couple log message cleanups, plus some C to C++ comment
-// conversion.
-//
-// Revision 1.15 1998/10/18 01:17:24 curt
-// Point3D tweaks.
-//
-// Revision 1.14 1998/10/17 01:34:32 curt
-// C++ ifying ...
-//
-// Revision 1.13 1998/10/16 00:56:12 curt
-// Converted to Point3D class.
-//
-// Revision 1.12 1998/09/15 04:27:50 curt
-// Changes for new astro code.
-//
-// Revision 1.11 1998/08/12 21:13:22 curt
-// Optimizations by Norman Vine.
-//
-// Revision 1.10 1998/07/22 21:45:39 curt
-// fg_time.cxx: Removed call to ctime() in a printf() which should be harmless
-// but seems to be triggering a bug.
-// light.cxx: Added code to adjust fog color based on sunrise/sunset effects
-// and view orientation. This is an attempt to match the fog color to the
-// sky color in the center of the screen. You see discrepancies at the
-// edges, but what else can be done?
-// sunpos.cxx: Caculate local direction to sun here. (what compass direction
-// do we need to face to point directly at sun)
-//
-// Revision 1.9 1998/07/08 14:48:39 curt
-// polar3d.h renamed to polar3d.hxx
-//
-// Revision 1.8 1998/05/02 01:53:18 curt
-// Fine tuning mktime() support because of varying behavior on different
-// platforms.
-//
-// Revision 1.7 1998/04/30 12:36:05 curt
-// C++-ifying a couple source files.
-//
-// Revision 1.6 1998/04/28 01:22:18 curt
-// Type-ified fgTIME and fgVIEW.
-//
-// Revision 1.5 1998/04/26 05:10:05 curt
-// "struct fgLIGHT" -> "fgLIGHT" because fgLIGHT is typedef'd.
-//
-// Revision 1.4 1998/04/25 22:06:34 curt
-// Edited cvs log messages in source files ... bad bad bad!
-//
-// 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 <pbleisch@acm.org> 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.
-//