gimp/app/blob.h

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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 __BLOB_H__
#define __BLOB_H__
typedef struct _BlobPoint BlobPoint;
typedef struct _BlobSpan BlobSpan;
typedef struct _Blob Blob;
struct _BlobPoint {
int x;
int y;
};
struct _BlobSpan {
int left;
int right;
};
struct _Blob {
int y;
int height;
BlobSpan data[1];
};
Blob *blob_convex_union (Blob *b1, Blob *b2);
Blob *blob_polygon (BlobPoint *points, int npoints);
Blob *blob_square (double xc, double yc, double xp, double yp, double xq, double yq);
Blob *blob_diamond (double xc, double yc, double xp, double yp, double xq, double yq);
Blob *blob_ellipse (double xc, double yc, double xp, double yp, double xq, double yq);
void blob_bounds(Blob *b, int *x, int *y, int *width, int *height);
#endif /* __BLOB_H__ */