simgear/Astro/stars.hxx

115 lines
3.3 KiB
C++

// stars.hxx -- data structures and routines for managing and rendering stars.
//
// Written by Curtis Olson, started August 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)
#ifndef _STARS_HXX
#define _STARS_HXX
#ifndef __cplusplus
# error This library requires C++
#endif
#include <Time/fg_time.hxx>
#define FG_STAR_LEVELS 8 // how many star transitions
// Initialize the Star Management Subsystem
int fgStarsInit( void );
// Draw the Stars
void fgStarsRender( void );
// [no longer used?] extern struct OrbElements pltOrbElements[9];
extern fgTIME cur_time_params;
#endif // _STARS_HXX
// $Log$
// Revision 1.8 1999/01/19 20:57:00 curt
// MacOS portability changes contributed by "Robert Puyol" <puyol@abvent.fr>
//
// Revision 1.7 1998/09/24 15:36:20 curt
// Converted to c++ style comments.
//
// Revision 1.6 1998/09/24 15:25:26 curt
// Miscellaneous tweaks.
//
//
// Revision 1.5 1998/09/17 18:25:13 curt
// Fixed output message.
//
// Revision 1.4 1998/09/15 04:26:23 curt
// New textured moon and rewritten/restructured Astro code contributed by Durk
// Talsma.
//
// Revision 1.3 1998/08/06 12:45:20 curt
// Modified to bring in stars in 8 increments based on magnitude, not number
// of stars.
//
// Revision 1.2 1998/04/28 01:19:03 curt
// Type-ified fgTIME and fgVIEW
//
// Revision 1.1 1998/04/22 13:21:35 curt
// C++ - ifing the code a bit.
//
// Revision 1.5 1998/04/21 17:02:33 curt
// Prepairing for C++ integration.
//
// Revision 1.4 1998/02/12 21:59:39 curt
// Incorporated code changes contributed by Charlie Hotchkiss
// <chotchkiss@namg.us.anritsu.com>
//
// Revision 1.3 1998/01/22 02:59:28 curt
// Changed #ifdef FILE_H to #ifdef _FILE_H
//
// Revision 1.2 1998/01/19 18:40:18 curt
// Tons of little changes to clean up the code and to remove fatal errors
// when building with the c++ compiler.
//
// Revision 1.1 1998/01/07 03:16:20 curt
// Moved from .../Src/Scenery/ to .../Src/Astro/
//
// Revision 1.6 1997/10/25 03:18:29 curt
// Incorporated sun, moon, and planet position and rendering code contributed
// by Durk Talsma.
//
// Revision 1.5 1997/09/18 16:20:09 curt
// At dusk/dawn add/remove stars in stages.
//
// Revision 1.4 1997/09/05 01:36:00 curt
// Working on getting stars right.
//
// Revision 1.3 1997/08/29 17:55:28 curt
// Worked on properly aligning the stars.
//
// Revision 1.2 1997/08/27 21:32:30 curt
// Restructured view calculation code. Added stars.
//
// Revision 1.1 1997/08/27 03:34:50 curt
// Initial revision.
//