mirror of https://github.com/GNOME/gimp.git
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __BOUNDARY_H__
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#define __BOUNDARY_H__
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/* half intensity for mask */
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#define BOUNDARY_HALF_WAY 127
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typedef enum
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{
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BOUNDARY_WITHIN_BOUNDS,
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BOUNDARY_IGNORE_BOUNDS
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} BoundaryType;
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struct _BoundSeg
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{
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gint x1;
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gint y1;
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gint x2;
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gint y2;
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guint open : 1;
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guint visited : 1;
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};
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BoundSeg * boundary_find (PixelRegion *maskPR,
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BoundaryType type,
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gint x1,
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gint y1,
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gint x2,
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gint y2,
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guchar threshold,
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gint *num_segs);
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BoundSeg * boundary_sort (const BoundSeg *segs,
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gint num_segs,
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gint *num_groups);
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BoundSeg * boundary_simplify (BoundSeg *sorted_segs,
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gint num_groups,
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gint *num_segs);
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/* offsets in-place */
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void boundary_offset (BoundSeg *segs,
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gint num_segs,
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gint off_x,
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gint off_y);
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#endif /* __BOUNDARY_H__ */
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