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/* blob.h: routines for manipulating scan converted convex
* polygons.
*
* Copyright 1998, Owen Taylor <otaylor@gtk.org>
*
* > Please contact the above author before modifying the copy <
* > of this file in the GIMP distribution. Thanks. <
*
* 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 2 of the License, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#ifndef __GIMP_INK_BLOB_H__
#define __GIMP_INK_BLOB_H__
typedef struct _BlobPoint BlobPoint;
typedef struct _BlobSpan BlobSpan;
typedef struct _Blob Blob;
typedef Blob * (* BlobFunc) (gdouble xc,
gdouble yc,
gdouble xp,
gdouble yp,
gdouble xq,
gdouble yq);
struct _BlobPoint
{
gint x;
gint y;
};
struct _BlobSpan
{
gint left;
gint right;
};
struct _Blob
{
gint y;
gint height;
BlobSpan data[1];
};
Blob * blob_polygon (BlobPoint *points,
gint npoints);
Blob * blob_square (gdouble xc,
gdouble yc,
gdouble xp,
gdouble yp,
gdouble xq,
gdouble yq);
Blob * blob_diamond (gdouble xc,
gdouble yc,
gdouble xp,
gdouble yp,
gdouble xq,
gdouble yq);
Blob * blob_ellipse (gdouble xc,
gdouble yc,
gdouble xp,
gdouble yp,
gdouble xq,
gdouble yq);
void blob_bounds (Blob *b,
gint *x,
gint *y,
gint *width,
gint *height);
Blob * blob_convex_union (Blob *b1,
Blob *b2);
Blob * blob_duplicate (Blob *b);
#endif /* __GIMP_INK_BLOB_H__ */
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