C++-ifying.

[flightgear.git] / Scenery / scenery.cxx

// scenery.cxx -- data structures and routines for managing scenery.
//
// 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)


#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#ifdef HAVE_WINDOWS_H
#  include <windows.h>
#endif

#include <GL/glut.h>
#include <XGL/xgl.h>

#include <stdio.h>
#include <string.h>

#include <Debug/fg_debug.h>
#include <Main/options.hxx>

// #include "obj.hxx"
#include "scenery.hxx"
// #include "texload.h"


// Temporary hack until we get a better texture management system running
GLint area_texture;


// Shared structure to hold current scenery parameters
struct fgSCENERY scenery;


// Initialize the Scenery Management system
int fgSceneryInit( void ) {
    fgOPTIONS *o;
    // char path[1024], fgpath[1024];
    // GLubyte *texbuf;
    // int width, height;

    o = &current_options;

    fgPrintf(FG_TERRAIN, FG_INFO, "Initializing scenery subsystem\n");

    scenery.cur_elev = -9999;

    return(1);
}


// Tell the scenery manager where we are so it can load the proper data, and
// build the proper structures.
void fgSceneryUpdate(double lon, double lat, double elev) {
    // does nothing;
}


// Render out the current scene
void fgSceneryRender( void ) {
}


// $Log$
// Revision 1.9  1998/10/16 23:27:57  curt
// C++-ifying.
//
// Revision 1.8  1998/08/25 16:52:40  curt
// material.cxx material.hxx obj.cxx obj.hxx texload.c texload.h moved to
//   ../Objects
//
// Revision 1.7  1998/07/13 21:01:59  curt
// Wrote access functions for current fgOPTIONS.
//
// Revision 1.6  1998/07/12 03:18:27  curt
// Added ground collision detection.  This involved:
// - saving the entire vertex list for each tile with the tile records.
// - saving the face list for each fragment with the fragment records.
// - code to intersect the current vertical line with the proper face in
//   an efficient manner as possible.
// Fixed a bug where the tiles weren't being shifted to "near" (0,0,0)
//
// Revision 1.5  1998/06/17 21:36:41  curt
// Load and manage multiple textures defined in the Materials library.
// Boost max material fagments for each material property to 800.
// Multiple texture support when rendering.
//
// Revision 1.4  1998/05/13 18:26:40  curt
// Root path info moved to fgOPTIONS.
//
// Revision 1.3  1998/05/07 23:15:20  curt
// Fixed a glTexImage2D() usage bug where width and height were mis-swapped.
// Added support for --tile-radius=n option.
//
// Revision 1.2  1998/05/02 01:52:16  curt
// Playing around with texture coordinates.
//
// Revision 1.1  1998/04/30 12:35:30  curt
// Added a command line rendering option specify smooth/flat shading.
//
// Revision 1.42  1998/04/28 21:43:27  curt
// Wrapped zlib calls up so we can conditionally comment out zlib support.
//
// Revision 1.41  1998/04/24 00:51:08  curt
// Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
// Tweaked the scenery file extentions to be "file.obj" (uncompressed)
// or "file.obz" (compressed.)
//
// Revision 1.40  1998/04/18 04:14:06  curt
// Moved fg_debug.c to it's own library.
//
// Revision 1.39  1998/04/08 23:30:07  curt
// Adopted Gnu automake/autoconf system.
//
// Revision 1.38  1998/04/03 22:11:37  curt
// Converting to Gnu autoconf system.
//
// Revision 1.37  1998/03/23 21:23:05  curt
// Debugging output tweaks.
//
// Revision 1.36  1998/03/14 00:30:50  curt
// Beginning initial terrain texturing experiments.
//
// Revision 1.35  1998/01/31 00:43:26  curt
// Added MetroWorks patches from Carmen Volpe.
//
// Revision 1.34  1998/01/27 03:26:43  curt
// Playing with new fgPrintf command.
//
// Revision 1.33  1998/01/19 19:27:17  curt
// Merged in make system changes from Bob Kuehne <rpk@sgi.com>
// This should simplify things tremendously.
//
// Revision 1.32  1998/01/19 18:40:37  curt
// Tons of little changes to clean up the code and to remove fatal errors
// when building with the c++ compiler.
//
// Revision 1.31  1998/01/13 00:23:11  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 1.30  1998/01/07 03:22:29  curt
// Moved astro stuff to .../Src/Astro/
//
// Revision 1.29  1997/12/30 20:47:52  curt
// Integrated new event manager with subsystem initializations.
//
// Revision 1.28  1997/12/15 23:55:02  curt
// Add xgl wrappers for debugging.
// Generate terrain normals on the fly.
//
// Revision 1.27  1997/12/12 21:41:30  curt
// More light/material property tweaking ... still a ways off.
//
// Revision 1.26  1997/12/12 19:52:58  curt
// Working on lightling and material properties.
//
// Revision 1.25  1997/12/10 22:37:51  curt
// Prepended "fg" on the name of all global structures that didn't have it yet.
// i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
//
// Revision 1.24  1997/12/08 22:51:18  curt
// Enhanced to handle ccw and cw tri-stripe winding.  This is a temporary
// admission of defeat.  I will eventually go back and get all the stripes
// wound the same way (ccw).
//
// Revision 1.23  1997/11/25 19:25:37  curt
// Changes to integrate Durk's moon/sun code updates + clean up.
//
// Revision 1.22  1997/10/28 21:00:22  curt
// Changing to new terrain format.
//
// Revision 1.21  1997/10/25 03:24:24  curt
// Incorporated sun, moon, and star positioning code contributed by Durk Talsma.
//
// Revision 1.20  1997/10/25 03:18:27  curt
// Incorporated sun, moon, and planet position and rendering code contributed
// by Durk Talsma.
//
// Revision 1.19  1997/09/05 14:17:30  curt
// More tweaking with stars.
//
// Revision 1.18  1997/09/05 01:35:59  curt
// Working on getting stars right.
//
// Revision 1.17  1997/08/29 17:55:27  curt
// Worked on properly aligning the stars.
//
// Revision 1.16  1997/08/27 21:32:29  curt
// Restructured view calculation code.  Added stars.
//
// Revision 1.15  1997/08/27 03:30:32  curt
// Changed naming scheme of basic shared structures.
//
// Revision 1.14  1997/08/25 20:27:24  curt
// Merged in initial HUD and Joystick code.
//
// Revision 1.13  1997/08/22 21:34:41  curt
// Doing a bit of reorganizing and house cleaning.
//
// Revision 1.12  1997/08/19 23:55:08  curt
// Worked on better simulating real lighting.
//
// Revision 1.11  1997/08/13 20:24:22  curt
// Changed default detail level.
//
// Revision 1.10  1997/08/06 00:24:30  curt
// Working on correct real time sun lighting.
//
// Revision 1.9  1997/08/04 17:08:11  curt
// Testing cvs on IRIX 6.x
//
// Revision 1.8  1997/07/18 23:41:27  curt
// Tweaks for building with Cygnus Win32 compiler.
//
// Revision 1.7  1997/07/16 20:04:52  curt
// Minor tweaks to aid Win32 port.
//
// Revision 1.6  1997/07/14 16:26:05  curt
// Testing/playing -- placed objects randomly across the entire terrain.
//
// Revision 1.5  1997/07/11 03:23:19  curt
// Solved some scenery display/orientation problems.  Still have a positioning
// (or transformation?) problem.
//
// Revision 1.4  1997/07/11 01:30:03  curt
// More tweaking of terrian floor.
//
// Revision 1.3  1997/06/29 21:16:50  curt
// More twiddling with the Scenery Management system.
//
// Revision 1.2  1997/06/27 20:03:37  curt
// Working on Makefile structure.
//
// Revision 1.1  1997/06/27 02:26:30  curt
// Initial revision.
//