1 /* CPML - Cairo Path Manipulation Library
2 * Copyright (C) 2008, Nicola Fontana <ntd at entidi.it>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
20 #ifndef __CPML_PAIR_H__
21 #define __CPML_PAIR_H__
26 #define CPML_DIR_RIGHT 0.
27 #define CPML_DIR_DOWN (M_PI/2.)
28 #define CPML_DIR_LEFT M_PI
29 #define CPML_DIR_UP (M_PI*3./2.)
35 typedef struct _CpmlPair CpmlPair
;
42 cairo_bool_t
cpml_pair_copy (CpmlPair
*pair
,
44 cairo_bool_t
cpml_pair_transform (CpmlPair
*pair
,
45 const cairo_matrix_t
*matrix
);
46 cairo_bool_t
cpml_pair_distance (double *distance
,
49 cairo_bool_t
cpml_pair_square_distance (double *distance
,
52 cairo_bool_t
cpml_pair_angle (double *angle
,
55 cairo_bool_t
cpml_vector_from_pair (CpmlPair
*vector
,
56 const CpmlPair
*pair
);
57 cairo_bool_t
cpml_vector_from_angle (CpmlPair
*vector
,
64 #endif /* __CPML_PAIR_H__ */