1 // scenery.cxx -- data structures and routines for managing scenery.
3 // Written by Curtis Olson, started May 1997.
5 // Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 // (Log is kept at end of this file)
39 #include <Debug/fg_debug.h>
40 #include <Main/options.hxx>
43 #include "scenery.hxx"
44 // #include "texload.h"
47 // Temporary hack until we get a better texture management system running
51 // Shared structure to hold current scenery parameters
52 struct fgSCENERY scenery;
55 // Initialize the Scenery Management system
56 int fgSceneryInit( void ) {
58 // char path[1024], fgpath[1024];
64 fgPrintf(FG_TERRAIN, FG_INFO, "Initializing scenery subsystem\n");
66 scenery.cur_elev = -9999;
72 // Tell the scenery manager where we are so it can load the proper data, and
73 // build the proper structures.
74 void fgSceneryUpdate(double lon, double lat, double elev) {
79 // Render out the current scene
80 void fgSceneryRender( void ) {
85 // Revision 1.9 1998/10/16 23:27:57 curt
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