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/* random.h: declarations for randomizing a bitmap.
Copyright (C) 1992, 2011 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef RANDOM_H
#define RANDOM_H
#include <kpathsea/types.h>
#include "bitmap.h"
#include "bounding-box.h"
/* See random.c. */
extern real random_max;
extern real random_threshold;
/* Move each pixel in B by a random amount between -random_max and
random_max (enlarging the bitmap as necessary). Return the number of
rows/columns added at each side of bitmap (i.e., all numbers are
positive) in ADJUST. (This is not actually a bounding box, but that
type is a convenient way to return the four numbers.) */
extern void randomize_bitmap (bitmap_type *b, bounding_box_type *adjust);
#endif /* not RANDOM_H */
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