3 * scenery.c -- data structures and routines for managing scenery.
5 * Written by Curtis Olson, started May 1997.
7 * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of the
12 * License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 * (Log is kept at end of this file)
25 **************************************************************************/
42 #include <Debug/fg_debug.h>
43 #include <Main/options.hxx>
46 #include "scenery.hxx"
47 // #include "texload.h"
50 /* Temporary hack until we get a better texture management system running */
54 /* Shared structure to hold current scenery parameters */
55 struct fgSCENERY scenery;
58 /* Initialize the Scenery Management system */
59 int fgSceneryInit( void ) {
61 // char path[1024], fgpath[1024];
67 fgPrintf(FG_TERRAIN, FG_INFO, "Initializing scenery subsystem\n");
69 scenery.cur_elev = -9999;
75 /* Tell the scenery manager where we are so it can load the proper data, and
76 * build the proper structures. */
77 void fgSceneryUpdate(double lon, double lat, double elev) {
82 /* Render out the current scene */
83 void fgSceneryRender( void ) {
88 /* Revision 1.8 1998/08/25 16:52:40 curt
89 /* material.cxx material.hxx obj.cxx obj.hxx texload.c texload.h moved to
92 * Revision 1.7 1998/07/13 21:01:59 curt
93 * Wrote access functions for current fgOPTIONS.
95 * Revision 1.6 1998/07/12 03:18:27 curt
96 * Added ground collision detection. This involved:
97 * - saving the entire vertex list for each tile with the tile records.
98 * - saving the face list for each fragment with the fragment records.
99 * - code to intersect the current vertical line with the proper face in
100 * an efficient manner as possible.
101 * Fixed a bug where the tiles weren't being shifted to "near" (0,0,0)
103 * Revision 1.5 1998/06/17 21:36:41 curt
104 * Load and manage multiple textures defined in the Materials library.
105 * Boost max material fagments for each material property to 800.
106 * Multiple texture support when rendering.
108 * Revision 1.4 1998/05/13 18:26:40 curt
109 * Root path info moved to fgOPTIONS.
111 * Revision 1.3 1998/05/07 23:15:20 curt
112 * Fixed a glTexImage2D() usage bug where width and height were mis-swapped.
113 * Added support for --tile-radius=n option.
115 * Revision 1.2 1998/05/02 01:52:16 curt
116 * Playing around with texture coordinates.
118 * Revision 1.1 1998/04/30 12:35:30 curt
119 * Added a command line rendering option specify smooth/flat shading.
121 * Revision 1.42 1998/04/28 21:43:27 curt
122 * Wrapped zlib calls up so we can conditionally comment out zlib support.
124 * Revision 1.41 1998/04/24 00:51:08 curt
125 * Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
126 * Tweaked the scenery file extentions to be "file.obj" (uncompressed)
127 * or "file.obz" (compressed.)
129 * Revision 1.40 1998/04/18 04:14:06 curt
130 * Moved fg_debug.c to it's own library.
132 * Revision 1.39 1998/04/08 23:30:07 curt
133 * Adopted Gnu automake/autoconf system.
135 * Revision 1.38 1998/04/03 22:11:37 curt
136 * Converting to Gnu autoconf system.
138 * Revision 1.37 1998/03/23 21:23:05 curt
139 * Debugging output tweaks.
141 * Revision 1.36 1998/03/14 00:30:50 curt
142 * Beginning initial terrain texturing experiments.
144 * Revision 1.35 1998/01/31 00:43:26 curt
145 * Added MetroWorks patches from Carmen Volpe.
147 * Revision 1.34 1998/01/27 03:26:43 curt
148 * Playing with new fgPrintf command.
150 * Revision 1.33 1998/01/19 19:27:17 curt
151 * Merged in make system changes from Bob Kuehne <rpk@sgi.com>
152 * This should simplify things tremendously.
154 * Revision 1.32 1998/01/19 18:40:37 curt
155 * Tons of little changes to clean up the code and to remove fatal errors
156 * when building with the c++ compiler.
158 * Revision 1.31 1998/01/13 00:23:11 curt
159 * Initial changes to support loading and management of scenery tiles. Note,
160 * there's still a fair amount of work left to be done.
162 * Revision 1.30 1998/01/07 03:22:29 curt
163 * Moved astro stuff to .../Src/Astro/
165 * Revision 1.29 1997/12/30 20:47:52 curt
166 * Integrated new event manager with subsystem initializations.
168 * Revision 1.28 1997/12/15 23:55:02 curt
169 * Add xgl wrappers for debugging.
170 * Generate terrain normals on the fly.
172 * Revision 1.27 1997/12/12 21:41:30 curt
173 * More light/material property tweaking ... still a ways off.
175 * Revision 1.26 1997/12/12 19:52:58 curt
176 * Working on lightling and material properties.
178 * Revision 1.25 1997/12/10 22:37:51 curt
179 * Prepended "fg" on the name of all global structures that didn't have it yet.
180 * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
182 * Revision 1.24 1997/12/08 22:51:18 curt
183 * Enhanced to handle ccw and cw tri-stripe winding. This is a temporary
184 * admission of defeat. I will eventually go back and get all the stripes
185 * wound the same way (ccw).
187 * Revision 1.23 1997/11/25 19:25:37 curt
188 * Changes to integrate Durk's moon/sun code updates + clean up.
190 * Revision 1.22 1997/10/28 21:00:22 curt
191 * Changing to new terrain format.
193 * Revision 1.21 1997/10/25 03:24:24 curt
194 * Incorporated sun, moon, and star positioning code contributed by Durk Talsma.
196 * Revision 1.20 1997/10/25 03:18:27 curt
197 * Incorporated sun, moon, and planet position and rendering code contributed
200 * Revision 1.19 1997/09/05 14:17:30 curt
201 * More tweaking with stars.
203 * Revision 1.18 1997/09/05 01:35:59 curt
204 * Working on getting stars right.
206 * Revision 1.17 1997/08/29 17:55:27 curt
207 * Worked on properly aligning the stars.
209 * Revision 1.16 1997/08/27 21:32:29 curt
210 * Restructured view calculation code. Added stars.
212 * Revision 1.15 1997/08/27 03:30:32 curt
213 * Changed naming scheme of basic shared structures.
215 * Revision 1.14 1997/08/25 20:27:24 curt
216 * Merged in initial HUD and Joystick code.
218 * Revision 1.13 1997/08/22 21:34:41 curt
219 * Doing a bit of reorganizing and house cleaning.
221 * Revision 1.12 1997/08/19 23:55:08 curt
222 * Worked on better simulating real lighting.
224 * Revision 1.11 1997/08/13 20:24:22 curt
225 * Changed default detail level.
227 * Revision 1.10 1997/08/06 00:24:30 curt
228 * Working on correct real time sun lighting.
230 * Revision 1.9 1997/08/04 17:08:11 curt
231 * Testing cvs on IRIX 6.x
233 * Revision 1.8 1997/07/18 23:41:27 curt
234 * Tweaks for building with Cygnus Win32 compiler.
236 * Revision 1.7 1997/07/16 20:04:52 curt
237 * Minor tweaks to aid Win32 port.
239 * Revision 1.6 1997/07/14 16:26:05 curt
240 * Testing/playing -- placed objects randomly across the entire terrain.
242 * Revision 1.5 1997/07/11 03:23:19 curt
243 * Solved some scenery display/orientation problems. Still have a positioning
244 * (or transformation?) problem.
246 * Revision 1.4 1997/07/11 01:30:03 curt
247 * More tweaking of terrian floor.
249 * Revision 1.3 1997/06/29 21:16:50 curt
250 * More twiddling with the Scenery Management system.
252 * Revision 1.2 1997/06/27 20:03:37 curt
253 * Working on Makefile structure.
255 * Revision 1.1 1997/06/27 02:26:30 curt