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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.
*/
#include "config.h"
#include "art_rect_svp.h"
#include "art_misc.h"
#include "art_svp.h"
#include "art_rect.h"
#ifndef MAX
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
#endif /* MAX */
#ifndef MIN
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#endif /* MIN */
/**
* art_drect_svp: Find the bounding box of a sorted vector path.
* @bbox: Where to store the bounding box.
* @svp: The SVP.
*
* Finds the bounding box of the SVP.
**/
void
art_drect_svp (ArtDRect *bbox, const ArtSVP *svp)
{
gint i;
if (svp->n_segs == 0)
{
bbox->x0 = 0;
bbox->y0 = 0;
bbox->x1 = 0;
bbox->y1 = 0;
return;
}
art_drect_copy (bbox, &svp->segs[0].bbox);
for (i = 1; i < svp->n_segs; i++)
{
bbox->x0 = MIN (bbox->x0, svp->segs[i].bbox.x0);
bbox->y0 = MIN (bbox->y0, svp->segs[i].bbox.y0);
bbox->x1 = MAX (bbox->x1, svp->segs[i].bbox.x1);
bbox->y1 = MAX (bbox->y1, svp->segs[i].bbox.y1);
}
}
/**
* art_drect_svp_union:
* @bbox: Initial boundin box and where to store the bounding box.
* @svp: The SVP.
*
* Finds the bounding box of the SVP, computing its union with an
* existing bbox.
**/
void
art_drect_svp_union (ArtDRect *bbox, const ArtSVP *svp)
{
ArtDRect svp_bbox;
art_drect_svp (&svp_bbox, svp);
art_drect_union (bbox, bbox, &svp_bbox);
}
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