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67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/* Libart_LGPL - library of basic graphic primitives
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* Copyright (C) 1998 Raph Levien
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __ART_UTA_H__
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#define __ART_UTA_H__
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/* Basic data structures and constructors for microtile arrays */
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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typedef art_u32 ArtUtaBbox;
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typedef struct _ArtUta ArtUta;
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#define ART_UTA_BBOX_CONS(x0, y0, x1, y1) (((x0) << 24) | ((y0) << 16) | \
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((x1) << 8) | (y1))
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#define ART_UTA_BBOX_X0(ub) ((ub) >> 24)
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#define ART_UTA_BBOX_Y0(ub) (((ub) >> 16) & 0xff)
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#define ART_UTA_BBOX_X1(ub) (((ub) >> 8) & 0xff)
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#define ART_UTA_BBOX_Y1(ub) ((ub) & 0xff)
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#define ART_UTILE_SHIFT 5
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#define ART_UTILE_SIZE (1 << ART_UTILE_SHIFT)
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/* Coordinates are shifted right by ART_UTILE_SHIFT wrt the real
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coordinates. */
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struct _ArtUta {
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int x0;
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int y0;
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int width;
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int height;
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ArtUtaBbox *utiles;
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};
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ArtUta *
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art_uta_new (int x0, int y0, int x1, int y1);
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ArtUta *
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art_uta_new_coords (int x0, int y0, int x1, int y1);
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void
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art_uta_free (ArtUta *uta);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __ART_UTA_H__ */
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