2 * Copyright © 2023 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
31 ao_box_is_empty(struct ao_box *box)
33 return box->x1 == INT16_MAX;
37 ao_box_set_empty(struct ao_box *box)
45 #define AO_BOX_INIT { .x1 = INT16_MAX, .y1 = INT16_MAX, .x2 = INT16_MIN, .y2 = INT16_MIN }
48 ao_box_union(struct ao_box *dst, int16_t x1, int16_t y1, int16_t x2, int16_t y2);
50 #endif /* _AO_BOX_H_ */