1 // scenery.hxx -- 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)
30 # error This library requires C++
34 #include <Math/point3d.hxx>
37 // Define a structure containing global scenery parameters
39 // center of current scenery chunk
42 // next center of current scenery chunk
45 // angle of sun relative to current local horizontal
48 // elevation of terrain at our current lat/lon (based on the
49 // actual drawn polygons)
53 extern struct fgSCENERY scenery;
56 // Initialize the Scenery Management system
57 int fgSceneryInit( void );
60 // Tell the scenery manager where we are so it can load the proper
61 // data, and build the proper structures.
62 void fgSceneryUpdate(double lon, double lat, double elev);
65 // Render out the current scene
66 void fgSceneryRender( void );
69 #endif // _SCENERY_HXX
73 // Revision 1.6 1998/10/16 23:27:59 curt
76 // Revision 1.5 1998/10/16 00:55:44 curt
77 // Converted to Point3D class.
79 // Revision 1.4 1998/07/12 03:18:28 curt
80 // Added ground collision detection. This involved:
81 // - saving the entire vertex list for each tile with the tile records.
82 // - saving the face list for each fragment with the fragment records.
83 // - code to intersect the current vertical line with the proper face in
84 // an efficient manner as possible.
85 // Fixed a bug where the tiles weren't being shifted to "near" (0,0,0)
87 // Revision 1.3 1998/07/08 14:47:22 curt
88 // Fix GL_MODULATE vs. GL_DECAL problem introduced by splash screen.
89 // polare3d.h renamed to polar3d.hxx
90 // fg{Cartesian,Polar}Point3d consolodated.
91 // Added some initial support for calculating local current ground elevation.
93 // Revision 1.2 1998/05/02 01:52:16 curt
94 // Playing around with texture coordinates.
96 // Revision 1.1 1998/04/30 12:35:31 curt
97 // Added a command line rendering option specify smooth/flat shading.
99 // Revision 1.21 1998/04/25 22:06:31 curt
100 // Edited cvs log messages in source files ... bad bad bad!
102 // Revision 1.20 1998/04/22 13:22:45 curt
103 // C++ - ifing the code a bit.
105 // Revision 1.19 1998/04/21 17:02:43 curt
106 // Prepairing for C++ integration.
108 // Revision 1.18 1998/03/14 00:30:51 curt
109 // Beginning initial terrain texturing experiments.
111 // Revision 1.17 1998/02/20 00:16:24 curt
112 // Thursday's tweaks.
114 // Revision 1.16 1998/01/27 00:48:03 curt
115 // Incorporated Paul Bleisch's <pbleisch@acm.org> new debug message
116 // system and commandline/config file processing code.
118 // Revision 1.15 1998/01/22 02:59:41 curt
119 // Changed #ifdef FILE_H to #ifdef _FILE_H
121 // Revision 1.14 1998/01/19 19:27:17 curt
122 // Merged in make system changes from Bob Kuehne <rpk@sgi.com>
123 // This should simplify things tremendously.
125 // Revision 1.13 1998/01/19 18:40:38 curt
126 // Tons of little changes to clean up the code and to remove fatal errors
127 // when building with the c++ compiler.
129 // Revision 1.12 1997/12/15 23:55:03 curt
130 // Add xgl wrappers for debugging.
131 // Generate terrain normals on the fly.
133 // Revision 1.11 1997/12/10 22:37:52 curt
134 // Prepended "fg" on the name of all global structures that didn't have it yet.
135 // i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
137 // Revision 1.10 1997/09/04 02:17:37 curt
140 // Revision 1.9 1997/08/27 03:30:33 curt
141 // Changed naming scheme of basic shared structures.
143 // Revision 1.8 1997/08/06 00:24:30 curt
144 // Working on correct real time sun lighting.
146 // Revision 1.7 1997/07/23 21:52:27 curt
147 // Put comments around the text after an #endif for increased portability.
149 // Revision 1.6 1997/07/11 01:30:03 curt
150 // More tweaking of terrian floor.
152 // Revision 1.5 1997/06/26 22:14:57 curt
153 // Beginning work on a scenery management system.
155 // Revision 1.4 1997/06/21 17:57:21 curt
156 // directory shuffling ...
158 // Revision 1.2 1997/05/23 15:40:43 curt
159 // Added GNU copyright headers.
161 // Revision 1.1 1997/05/16 16:07:07 curt