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- /*
- ** wt -- a 3d game engine
- **
- ** Copyright (C) 1994 by Chris Laurel
- ** email: claurel@mr.net
- ** snail mail: Chris Laurel, 5700 W Lake St #208, St. Louis Park, MN 55416
- **
- ** This program is free software; you can redistribute it and/or modify
- ** it under the terms of the GNU General Public License as published by
- ** the Free Software Foundation; either version 2 of the License, or
- ** (at your option) any later version.
- **
- ** This program is distributed in the hope that it will be useful,
- ** but WITHOUT ANY WARRANTY; without even the implied warranty of
- ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ** GNU General Public License for more details.
- **
- ** You should have received a copy of the GNU General Public License
- ** along with this program; if not, write to the Free Software
- ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- #include <stdlib.h>
- #include <math.h>
- #include "wt.h"
- #include "error.h"
- #include "fixed.h"
- #include "wtmem.h"
- #include "view.h"
-
-
- View *new_view(fixed arc)
- {
- View *v;
-
- if (arc >= FIXED_PI)
- return NULL;
- v = wtmalloc(sizeof(View));
- v->arc = arc;
- v->eye_distance = FLOAT_TO_FIXED(1.0);
- v->view_plane_size =
- fixmul(FLOAT_TO_FIXED(tan(FIXED_TO_FLOAT(arc) / 2.0)),
- v->eye_distance);
-
- return v;
- }
-