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/* Libart_LGPL - library of basic graphic primitives
* Copyright (C) 1998 Raph Levien
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __ART_UTA_H__
#define __ART_UTA_H__
/* Basic data structures and constructors for microtile arrays */
#include <libart_lgpl/art_misc.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
typedef art_u32 ArtUtaBbox;
typedef struct _ArtUta ArtUta;
#define ART_UTA_BBOX_CONS(x0, y0, x1, y1) (((x0) << 24) | ((y0) << 16) | \
((x1) << 8) | (y1))
#define ART_UTA_BBOX_X0(ub) ((ub) >> 24)
#define ART_UTA_BBOX_Y0(ub) (((ub) >> 16) & 0xff)
#define ART_UTA_BBOX_X1(ub) (((ub) >> 8) & 0xff)
#define ART_UTA_BBOX_Y1(ub) ((ub) & 0xff)
#define ART_UTILE_SHIFT 5
#define ART_UTILE_SIZE (1 << ART_UTILE_SHIFT)
/* Coordinates are shifted right by ART_UTILE_SHIFT wrt the real
coordinates. */
struct _ArtUta {
gint x0;
gint y0;
gint width;
gint height;
ArtUtaBbox *utiles;
};
ArtUta *
art_uta_new (gint x0, gint y0, gint x1, gint y1);
ArtUta *
art_uta_new_coords (gint x0, gint y0, gint x1, gint y1);
void
art_uta_free (ArtUta *uta);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __ART_UTA_H__ */
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