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 <Include/general.h>
44 #include <Scenery/obj.hxx>
45 #include <Scenery/scenery.hxx>
46 #include <Scenery/texload.h>
49 /* Temporary hack until we get a better texture management system running */
53 /* Shared structure to hold current scenery parameters */
54 struct fgSCENERY scenery;
57 /* Initialize the Scenery Management system */
58 int fgSceneryInit( void ) {
60 char path[1024], fgpath[1024];
66 fgPrintf(FG_TERRAIN, FG_INFO, "Initializing scenery subsystem\n");
68 /* set the default terrain detail level */
69 // scenery.terrain_skip = 6;
71 /* temp: load in a demo texture */
73 strcat(path, g->root_dir);
74 strcat(path, "/Textures/");
75 strcat(path, "desert.rgb");
78 if ( (texbuf = read_rgb_texture(path, &width, &height)) == NULL ) {
81 strcat(fgpath, ".gz");
82 if ( (texbuf = read_rgb_texture(fgpath, &width, &height)) == NULL ) {
83 fgPrintf( FG_GENERAL, FG_EXIT, "Error in loading texture %s\n",
89 xglTexImage2D(GL_TEXTURE_2D, 0, 3, width, height, 0,
90 GL_RGB, GL_UNSIGNED_BYTE, texbuf);
96 /* Tell the scenery manager where we are so it can load the proper data, and
97 * build the proper structures. */
98 void fgSceneryUpdate(double lon, double lat, double elev) {
105 /* a hardcoded hack follows */
107 /* this routine should parse the file, and make calls back to the
108 * scenery management system to build the appropriate structures */
110 strcat(path, g->root_dir);
111 strcat(path, "/Scenery/");
112 strcat(path, "mesa-e.obj");
114 // fgPrintf(FG_TERRAIN, FG_DEBUG, " Loading Scenery: %s\n", path);
116 // area_terrain = fgObjLoad(path, &scenery.center, &max_radius);
120 /* Render out the current scene */
121 void fgSceneryRender( void ) {
126 /* Revision 1.3 1998/05/07 23:15:20 curt
127 /* Fixed a glTexImage2D() usage bug where width and height were mis-swapped.
128 /* Added support for --tile-radius=n option.
130 * Revision 1.2 1998/05/02 01:52:16 curt
131 * Playing around with texture coordinates.
133 * Revision 1.1 1998/04/30 12:35:30 curt
134 * Added a command line rendering option specify smooth/flat shading.
136 * Revision 1.42 1998/04/28 21:43:27 curt
137 * Wrapped zlib calls up so we can conditionally comment out zlib support.
139 * Revision 1.41 1998/04/24 00:51:08 curt
140 * Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
141 * Tweaked the scenery file extentions to be "file.obj" (uncompressed)
142 * or "file.obz" (compressed.)
144 * Revision 1.40 1998/04/18 04:14:06 curt
145 * Moved fg_debug.c to it's own library.
147 * Revision 1.39 1998/04/08 23:30:07 curt
148 * Adopted Gnu automake/autoconf system.
150 * Revision 1.38 1998/04/03 22:11:37 curt
151 * Converting to Gnu autoconf system.
153 * Revision 1.37 1998/03/23 21:23:05 curt
154 * Debugging output tweaks.
156 * Revision 1.36 1998/03/14 00:30:50 curt
157 * Beginning initial terrain texturing experiments.
159 * Revision 1.35 1998/01/31 00:43:26 curt
160 * Added MetroWorks patches from Carmen Volpe.
162 * Revision 1.34 1998/01/27 03:26:43 curt
163 * Playing with new fgPrintf command.
165 * Revision 1.33 1998/01/19 19:27:17 curt
166 * Merged in make system changes from Bob Kuehne <rpk@sgi.com>
167 * This should simplify things tremendously.
169 * Revision 1.32 1998/01/19 18:40:37 curt
170 * Tons of little changes to clean up the code and to remove fatal errors
171 * when building with the c++ compiler.
173 * Revision 1.31 1998/01/13 00:23:11 curt
174 * Initial changes to support loading and management of scenery tiles. Note,
175 * there's still a fair amount of work left to be done.
177 * Revision 1.30 1998/01/07 03:22:29 curt
178 * Moved astro stuff to .../Src/Astro/
180 * Revision 1.29 1997/12/30 20:47:52 curt
181 * Integrated new event manager with subsystem initializations.
183 * Revision 1.28 1997/12/15 23:55:02 curt
184 * Add xgl wrappers for debugging.
185 * Generate terrain normals on the fly.
187 * Revision 1.27 1997/12/12 21:41:30 curt
188 * More light/material property tweaking ... still a ways off.
190 * Revision 1.26 1997/12/12 19:52:58 curt
191 * Working on lightling and material properties.
193 * Revision 1.25 1997/12/10 22:37:51 curt
194 * Prepended "fg" on the name of all global structures that didn't have it yet.
195 * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
197 * Revision 1.24 1997/12/08 22:51:18 curt
198 * Enhanced to handle ccw and cw tri-stripe winding. This is a temporary
199 * admission of defeat. I will eventually go back and get all the stripes
200 * wound the same way (ccw).
202 * Revision 1.23 1997/11/25 19:25:37 curt
203 * Changes to integrate Durk's moon/sun code updates + clean up.
205 * Revision 1.22 1997/10/28 21:00:22 curt
206 * Changing to new terrain format.
208 * Revision 1.21 1997/10/25 03:24:24 curt
209 * Incorporated sun, moon, and star positioning code contributed by Durk Talsma.
211 * Revision 1.20 1997/10/25 03:18:27 curt
212 * Incorporated sun, moon, and planet position and rendering code contributed
215 * Revision 1.19 1997/09/05 14:17:30 curt
216 * More tweaking with stars.
218 * Revision 1.18 1997/09/05 01:35:59 curt
219 * Working on getting stars right.
221 * Revision 1.17 1997/08/29 17:55:27 curt
222 * Worked on properly aligning the stars.
224 * Revision 1.16 1997/08/27 21:32:29 curt
225 * Restructured view calculation code. Added stars.
227 * Revision 1.15 1997/08/27 03:30:32 curt
228 * Changed naming scheme of basic shared structures.
230 * Revision 1.14 1997/08/25 20:27:24 curt
231 * Merged in initial HUD and Joystick code.
233 * Revision 1.13 1997/08/22 21:34:41 curt
234 * Doing a bit of reorganizing and house cleaning.
236 * Revision 1.12 1997/08/19 23:55:08 curt
237 * Worked on better simulating real lighting.
239 * Revision 1.11 1997/08/13 20:24:22 curt
240 * Changed default detail level.
242 * Revision 1.10 1997/08/06 00:24:30 curt
243 * Working on correct real time sun lighting.
245 * Revision 1.9 1997/08/04 17:08:11 curt
246 * Testing cvs on IRIX 6.x
248 * Revision 1.8 1997/07/18 23:41:27 curt
249 * Tweaks for building with Cygnus Win32 compiler.
251 * Revision 1.7 1997/07/16 20:04:52 curt
252 * Minor tweaks to aid Win32 port.
254 * Revision 1.6 1997/07/14 16:26:05 curt
255 * Testing/playing -- placed objects randomly across the entire terrain.
257 * Revision 1.5 1997/07/11 03:23:19 curt
258 * Solved some scenery display/orientation problems. Still have a positioning
259 * (or transformation?) problem.
261 * Revision 1.4 1997/07/11 01:30:03 curt
262 * More tweaking of terrian floor.
264 * Revision 1.3 1997/06/29 21:16:50 curt
265 * More twiddling with the Scenery Management system.
267 * Revision 1.2 1997/06/27 20:03:37 curt
268 * Working on Makefile structure.
270 * Revision 1.1 1997/06/27 02:26:30 curt