1998-06-15 06:42:36 +08:00
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/* blob.h: routines for manipulating scan converted convex
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* polygons.
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2004-05-26 23:34:45 +08:00
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*
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1998-06-15 06:42:36 +08:00
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* Copyright 1998, Owen Taylor <otaylor@gtk.org>
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*
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* > Please contact the above author before modifying the copy <
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* > of this file in the GIMP distribution. Thanks. <
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*
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2009-01-18 06:28:01 +08:00
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* This program is free software: you can redistribute it and/or modify
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1998-06-15 06:42:36 +08:00
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* it under the terms of the GNU General Public License as published by
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2009-01-18 06:28:01 +08:00
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* the Free Software Foundation; either version 3 of the License, or
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1998-06-15 06:42:36 +08:00
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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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2009-01-18 06:28:01 +08:00
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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1998-06-15 06:42:36 +08:00
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*
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*/
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2004-05-26 23:34:45 +08:00
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#ifndef __GIMP_INK_BLOB_H__
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#define __GIMP_INK_BLOB_H__
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1998-06-15 06:42:36 +08:00
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2000-12-29 23:22:01 +08:00
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1999-02-03 12:29:08 +08:00
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typedef struct _BlobPoint BlobPoint;
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2000-12-29 23:22:01 +08:00
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typedef struct _BlobSpan BlobSpan;
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typedef struct _Blob Blob;
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1998-06-15 06:42:36 +08:00
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2004-05-26 23:34:45 +08:00
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typedef Blob * (* BlobFunc) (gdouble xc,
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gdouble yc,
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gdouble xp,
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gdouble yp,
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gdouble xq,
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gdouble yq);
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2003-02-05 22:39:40 +08:00
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2000-12-29 23:22:01 +08:00
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struct _BlobPoint
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{
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gint x;
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gint y;
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1999-02-03 12:29:08 +08:00
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};
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2000-12-29 23:22:01 +08:00
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struct _BlobSpan
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{
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gint left;
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gint right;
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1998-06-15 06:42:36 +08:00
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};
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2000-12-29 23:22:01 +08:00
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struct _Blob
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{
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gint y;
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2001-12-03 21:44:59 +08:00
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gint height;
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1998-10-25 13:55:36 +08:00
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BlobSpan data[1];
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1998-06-15 06:42:36 +08:00
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};
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2000-12-29 23:22:01 +08:00
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Blob * blob_polygon (BlobPoint *points,
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2004-05-26 23:34:45 +08:00
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gint npoints);
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2000-12-29 23:22:01 +08:00
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Blob * blob_square (gdouble xc,
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2004-05-26 23:34:45 +08:00
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gdouble yc,
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gdouble xp,
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gdouble yp,
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gdouble xq,
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gdouble yq);
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2000-12-29 23:22:01 +08:00
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Blob * blob_diamond (gdouble xc,
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2004-05-26 23:34:45 +08:00
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gdouble yc,
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gdouble xp,
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gdouble yp,
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gdouble xq,
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gdouble yq);
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2000-12-29 23:22:01 +08:00
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Blob * blob_ellipse (gdouble xc,
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2004-05-26 23:34:45 +08:00
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gdouble yc,
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gdouble xp,
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gdouble yp,
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gdouble xq,
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gdouble yq);
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2000-12-29 23:22:01 +08:00
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void blob_bounds (Blob *b,
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2004-05-26 23:34:45 +08:00
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gint *x,
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gint *y,
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gint *width,
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gint *height);
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Blob * blob_convex_union (Blob *b1,
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Blob *b2);
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2005-01-15 04:13:54 +08:00
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Blob * blob_duplicate (Blob *b);
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2000-12-29 23:22:01 +08:00
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1998-06-15 06:42:36 +08:00
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2004-05-26 23:34:45 +08:00
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#endif /* __GIMP_INK_BLOB_H__ */
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