source: trunk/third/libart_lgpl/art_uta.h @ 18256

Revision 18256, 1.9 KB checked in by ghudson, 22 years ago (diff)
This commit was generated by cvs2svn to compensate for changes in r18255, which included commits to RCS files with non-trunk default branches.
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[18255]1/* Libart_LGPL - library of basic graphic primitives
2 * Copyright (C) 1998 Raph Levien
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library 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.
8 *
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 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 */
19
20#ifndef __ART_UTA_H__
21#define __ART_UTA_H__
22
23/* Basic data structures and constructors for microtile arrays */
24
25#ifdef LIBART_COMPILATION
26#include "art_misc.h"
27#else
28#include <libart_lgpl/art_misc.h>
29#endif
30
31#ifdef __cplusplus
32extern "C" {
33#endif /* __cplusplus */
34
35typedef art_u32 ArtUtaBbox;
36typedef struct _ArtUta ArtUta;
37
38#define ART_UTA_BBOX_CONS(x0, y0, x1, y1) (((x0) << 24) | ((y0) << 16) | \
39                                       ((x1) << 8) | (y1))
40
41#define ART_UTA_BBOX_X0(ub) ((ub) >> 24)
42#define ART_UTA_BBOX_Y0(ub) (((ub) >> 16) & 0xff)
43#define ART_UTA_BBOX_X1(ub) (((ub) >> 8) & 0xff)
44#define ART_UTA_BBOX_Y1(ub) ((ub) & 0xff)
45
46#define ART_UTILE_SHIFT 5
47#define ART_UTILE_SIZE (1 << ART_UTILE_SHIFT)
48
49/* Coordinates are shifted right by ART_UTILE_SHIFT wrt the real
50   coordinates. */
51struct _ArtUta {
52  int x0;
53  int y0;
54  int width;
55  int height;
56  ArtUtaBbox *utiles;
57};
58
59ArtUta *
60art_uta_new (int x0, int y0, int x1, int y1);
61
62ArtUta *
63art_uta_new_coords (int x0, int y0, int x1, int y1);
64
65void
66art_uta_free (ArtUta *uta);
67
68#ifdef __cplusplus
69}
70#endif /* __cplusplus */
71
72#endif /* __ART_UTA_H__ */
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