1 /**************************************************************************
2 * scenery.hxx -- data structures and routines for managing scenery.
4 * Written by Curtis Olson, started May 1997.
6 * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * (Log is kept at end of this file)
24 **************************************************************************/
32 # error This library requires C++
36 #include <Include/fg_types.h>
39 /* Define a structure containing global scenery parameters */
41 /* center of current scenery chunk */
44 /* next center of current scenery chunk */
45 fgPoint3d next_center;
47 /* angle of sun relative to current local horizontal */
50 // elevation of terrain at our current lat/lon (based on the
51 // actual drawn polygons)
55 extern struct fgSCENERY scenery;
58 /* Initialize the Scenery Management system */
59 int fgSceneryInit( void );
62 /* Tell the scenery manager where we are so it can load the proper data, and
63 * build the proper structures. */
64 void fgSceneryUpdate(double lon, double lat, double elev);
67 /* Render out the current scene */
68 void fgSceneryRender( void );
71 #endif /* _SCENERY_HXX */
75 /* Revision 1.4 1998/07/12 03:18:28 curt
76 /* Added ground collision detection. This involved:
77 /* - saving the entire vertex list for each tile with the tile records.
78 /* - saving the face list for each fragment with the fragment records.
79 /* - code to intersect the current vertical line with the proper face in
80 /* an efficient manner as possible.
81 /* Fixed a bug where the tiles weren't being shifted to "near" (0,0,0)
83 * Revision 1.3 1998/07/08 14:47:22 curt
84 * Fix GL_MODULATE vs. GL_DECAL problem introduced by splash screen.
85 * polare3d.h renamed to polar3d.hxx
86 * fg{Cartesian,Polar}Point3d consolodated.
87 * Added some initial support for calculating local current ground elevation.
89 * Revision 1.2 1998/05/02 01:52:16 curt
90 * Playing around with texture coordinates.
92 * Revision 1.1 1998/04/30 12:35:31 curt
93 * Added a command line rendering option specify smooth/flat shading.
95 * Revision 1.21 1998/04/25 22:06:31 curt
96 * Edited cvs log messages in source files ... bad bad bad!
98 * Revision 1.20 1998/04/22 13:22:45 curt
99 * C++ - ifing the code a bit.
101 * Revision 1.19 1998/04/21 17:02:43 curt
102 * Prepairing for C++ integration.
104 * Revision 1.18 1998/03/14 00:30:51 curt
105 * Beginning initial terrain texturing experiments.
107 * Revision 1.17 1998/02/20 00:16:24 curt
110 * Revision 1.16 1998/01/27 00:48:03 curt
111 * Incorporated Paul Bleisch's <pbleisch@acm.org> new debug message
112 * system and commandline/config file processing code.
114 * Revision 1.15 1998/01/22 02:59:41 curt
115 * Changed #ifdef FILE_H to #ifdef _FILE_H
117 * Revision 1.14 1998/01/19 19:27:17 curt
118 * Merged in make system changes from Bob Kuehne <rpk@sgi.com>
119 * This should simplify things tremendously.
121 * Revision 1.13 1998/01/19 18:40:38 curt
122 * Tons of little changes to clean up the code and to remove fatal errors
123 * when building with the c++ compiler.
125 * Revision 1.12 1997/12/15 23:55:03 curt
126 * Add xgl wrappers for debugging.
127 * Generate terrain normals on the fly.
129 * Revision 1.11 1997/12/10 22:37:52 curt
130 * Prepended "fg" on the name of all global structures that didn't have it yet.
131 * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
133 * Revision 1.10 1997/09/04 02:17:37 curt
136 * Revision 1.9 1997/08/27 03:30:33 curt
137 * Changed naming scheme of basic shared structures.
139 * Revision 1.8 1997/08/06 00:24:30 curt
140 * Working on correct real time sun lighting.
142 * Revision 1.7 1997/07/23 21:52:27 curt
143 * Put comments around the text after an #endif for increased portability.
145 * Revision 1.6 1997/07/11 01:30:03 curt
146 * More tweaking of terrian floor.
148 * Revision 1.5 1997/06/26 22:14:57 curt
149 * Beginning work on a scenery management system.
151 * Revision 1.4 1997/06/21 17:57:21 curt
152 * directory shuffling ...
154 * Revision 1.2 1997/05/23 15:40:43 curt
155 * Added GNU copyright headers.
157 * Revision 1.1 1997/05/16 16:07:07 curt