mirror of https://github.com/GNOME/gimp.git
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/* The GIMP -- an image manipulation program
|
|
* Copyright (C) 1995-1999 Spencer Kimball and Peter Mattis
|
|
*
|
|
* 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 SCAN_CONVERT_H
|
|
#define SCAN_CONVERT_H
|
|
|
|
#include <glib.h>
|
|
#include "channel.h"
|
|
|
|
typedef struct {
|
|
gdouble x;
|
|
gdouble y;
|
|
} ScanConvertPoint;
|
|
|
|
|
|
typedef struct ScanConverterPrivate ScanConverter;
|
|
|
|
|
|
/* Create a new scan conversion context. Set "antialias" to 1 for no
|
|
* supersampling, or the amount to supersample by otherwise. */
|
|
ScanConverter * scan_converter_new (guint width, guint height,
|
|
guint antialias);
|
|
|
|
|
|
/* Add "npoints" from "pointlist" to the polygon currently being
|
|
* described by "scan_converter". */
|
|
void scan_converter_add_points (ScanConverter *scan_converter,
|
|
guint npoints,
|
|
ScanConvertPoint *pointlist);
|
|
|
|
|
|
/* Scan convert the polygon described by the list of points passed to
|
|
* scan_convert_add_points, and return a channel with a bits set if
|
|
* they fall within the polygon defined. The polygon is filled
|
|
* according to the even-odd rule. The polygon is closed by
|
|
* joining the final point to the initial point. */
|
|
Channel * scan_converter_to_channel (ScanConverter *scan_converter,
|
|
GimpImage *gimage);
|
|
|
|
|
|
void scan_converter_free (ScanConverter *scan_converter);
|
|
|
|
|
|
#endif /* SCAN_CONVERT_H */
|