1 /**************************************************************************
2 * views.h -- data structures and routines for managing and view parameters.
4 * Written by Curtis Olson, started August 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 **************************************************************************/
31 #include "../Include/types.h"
32 #include "../Flight/flight.h"
33 #include "../Math/mat3.h"
36 /* Define a structure containing view information */
38 struct fgCartesianPoint view_pos;
39 struct fgCartesianPoint cur_zero_elev;
40 MAT3vec local_up, view_up, view_forward;
41 double view_offset, goal_view_offset;
45 extern struct fgVIEW current_view;
48 /* Initialize a view structure */
49 void fgViewInit(struct fgVIEW *v);
51 /* Update the view parameters */
52 void fgViewUpdate(struct fgFLIGHT *f, struct fgVIEW *v);
59 /* Revision 1.4 1997/12/17 23:13:36 curt
60 /* Began working on rendering a sky.
62 * Revision 1.3 1997/12/15 23:54:51 curt
63 * Add xgl wrappers for debugging.
64 * Generate terrain normals on the fly.
66 * Revision 1.2 1997/12/10 22:37:48 curt
67 * Prepended "fg" on the name of all global structures that didn't have it yet.
68 * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
70 * Revision 1.1 1997/08/27 21:31:18 curt