// sky.hxx -- model sky with an upside down "bowl"
//
// Written by Curtis Olson, started December 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)


#ifndef _SKY_HXX
#define _SKY_HXX


#ifndef __cplusplus                                                          
# error This library requires C++
#endif                                   


// (Re)generate the display list
void fgSkyInit( void );

// (Re)calculate the sky colors at each vertex
void fgSkyColorsInit( void );

// Draw the Sky
void fgSkyRender( void );


#endif // _SKY_HXX


// $Log$
// Revision 1.1  1999/04/05 21:32:48  curt
// Initial revision
//
// Revision 1.2  1998/10/16 23:27:19  curt
// C++-ifying.
//
// Revision 1.1  1998/04/22 13:21:33  curt
// C++ - ifing the code a bit.
//
// Revision 1.4  1998/04/21 17:02:32  curt
// Prepairing for C++ integration.
//
// Revision 1.3  1998/01/22 02:59:28  curt
// Changed #ifdef FILE_H to #ifdef _FILE_H
//
// Revision 1.2  1998/01/19 18:40:17  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 03:16:19  curt
// Moved from .../Src/Scenery/ to .../Src/Astro/
//
// Revision 1.2  1997/12/22 23:45:49  curt
// First stab at sunset/sunrise sky glow effects.
//
// Revision 1.1  1997/12/17 23:14:31  curt
// Initial revision.
// Begin work on rendering the sky. (Rather than just using a clear screen.)
//