/usr/include/geomview/projective.h is in libgeomview-dev 1.9.4-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | /* Copyright (C) 1992-1998 The Geometry Center
* Copyright (C) 1998-2000 Stuart Levy, Tamara Munzner, Mark Phillips
*
* This file is part of Geomview.
*
* Geomview is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* Geomview 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Geomview; see the file COPYING. If not, write
* to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
* USA, or visit http://www.gnu.org.
*/
#ifndef _projective_
#define _projective_
#ifndef _proj_matrix_
#define _proj_matrix_
typedef double proj_matrix[4][4];
typedef double point[4];
#endif
#if PROTOTYPES
/* in sl2c_to_proj.c */
extern void sl2c_to_proj(/*sl2c_matrix, proj_matrix*/);
extern void proj_to_sl2c(/*proj_matrix, sl2c_matrix*/);
extern void proj_mult(/*proj_matrix, proj_matrix, proj_matrix*/);
extern void proj_copy(/*proj_matrix, proj_matrix*/);
extern void proj_invert(/*proj_matrix, proj_matrix*/);
#endif
#endif
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