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87 lines
2.3 KiB
C
87 lines
2.3 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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#include <string.h>
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#include "art_misc.h"
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#include "art_uta.h"
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/**
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* art_uta_new: Allocate a new uta.
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* @x0: Left coordinate of uta.
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* @y0: Top coordinate of uta.
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* @x1: Right coordinate of uta.
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* @y1: Bottom coordinate of uta.
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*
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* Allocates a new microtile array. The arguments are in units of
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* tiles, not pixels.
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*
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* Returns: the newly allocated #ArtUta.
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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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{
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ArtUta *uta;
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uta = art_new (ArtUta, 1);
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uta->x0 = x0;
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uta->y0 = y0;
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uta->width = x1 - x0;
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uta->height = y1 - y0;
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uta->utiles = art_new (ArtUtaBbox, uta->width * uta->height);
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memset (uta->utiles, 0, uta->width * uta->height * sizeof(ArtUtaBbox));
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return uta;
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}
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/**
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* art_uta_new_coords: Allocate a new uta, based on pixel coordinates.
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* @x0: Left coordinate of uta.
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* @y0: Top coordinate of uta.
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* @x1: Right coordinate of uta.
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* @y1: Bottom coordinate of uta.
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*
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* Allocates a new microtile array. The arguments are in pixels
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*
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* Returns: the newly allocated #ArtUta.
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**/
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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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{
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return art_uta_new (x0 >> ART_UTILE_SHIFT, y0 >> ART_UTILE_SHIFT,
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1 + (x1 >> ART_UTILE_SHIFT),
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1 + (y1 >> ART_UTILE_SHIFT));
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}
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/**
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* art_uta_free: Free a uta.
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* @uta: The uta to free.
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*
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* Frees the microtile array structure, including the actual microtile
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* data.
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**/
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void
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art_uta_free (ArtUta *uta)
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{
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art_free (uta->utiles);
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art_free (uta);
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}
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/* User to Aardvark! */
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