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 32 extern "C" { 33 #endif /* __cplusplus */ 34 35 typedef art_u32 ArtUtaBbox; 36 typedef 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. */ 51 struct _ArtUta { 52 int x0; 53 int y0; 54 int width; 55 int height; 56 ArtUtaBbox *utiles; 57 }; 58 59 ArtUta * 60 art_uta_new (int x0, int y0, int x1, int y1); 61 62 ArtUta * 63 art_uta_new_coords (int x0, int y0, int x1, int y1); 64 65 void 66 art_uta_free (ArtUta *uta); 67 68 #ifdef __cplusplus 69 } 70 #endif /* __cplusplus */ 71 72 #endif /* __ART_UTA_H__ */ 73