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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#ifndef __GIMP_CURVE_H__
#define __GIMP_CURVE_H__
#include "gimpdata.h"
#define GIMP_TYPE_CURVE (gimp_curve_get_type ())
#define GIMP_CURVE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CURVE, GimpCurve))
#define GIMP_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CURVE, GimpCurveClass))
#define GIMP_IS_CURVE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CURVE))
#define GIMP_IS_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CURVE))
#define GIMP_CURVE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_CURVE, GimpCurveClass))
typedef struct _GimpCurvePoint GimpCurvePoint;
typedef struct _GimpCurveClass GimpCurveClass;
struct _GimpCurvePoint
{
gdouble x;
gdouble y;
GimpCurvePointType type;
};
struct _GimpCurve
{
GimpData parent_instance;
GimpCurveType curve_type;
gint n_points;
GimpCurvePoint *points;
gint n_samples;
gdouble *samples;
gboolean identity; /* whether the curve is an identity mapping */
};
struct _GimpCurveClass
{
GimpDataClass parent_class;
};
GType gimp_curve_get_type (void) G_GNUC_CONST;
GimpData * gimp_curve_new (const gchar *name);
GimpData * gimp_curve_get_standard (void);
void gimp_curve_reset (GimpCurve *curve,
gboolean reset_type);
void gimp_curve_set_curve_type (GimpCurve *curve,
GimpCurveType curve_type);
GimpCurveType gimp_curve_get_curve_type (GimpCurve *curve);
gint gimp_curve_get_n_points (GimpCurve *curve);
void gimp_curve_set_n_samples (GimpCurve *curve,
gint n_samples);
gint gimp_curve_get_n_samples (GimpCurve *curve);
gint gimp_curve_get_point_at (GimpCurve *curve,
gdouble x);
gint gimp_curve_get_closest_point (GimpCurve *curve,
gdouble x,
gdouble y,
gdouble max_distance);
gint gimp_curve_add_point (GimpCurve *curve,
gdouble x,
gdouble y);
void gimp_curve_delete_point (GimpCurve *curve,
gint point);
void gimp_curve_set_point (GimpCurve *curve,
gint point,
gdouble x,
gdouble y);
void gimp_curve_move_point (GimpCurve *curve,
gint point,
gdouble y);
void gimp_curve_get_point (GimpCurve *curve,
gint point,
gdouble *x,
gdouble *y);
void gimp_curve_set_point_type (GimpCurve *curve,
gint point,
GimpCurvePointType type);
GimpCurvePointType gimp_curve_get_point_type (GimpCurve *curve,
gint point);
void gimp_curve_clear_points (GimpCurve *curve);
void gimp_curve_set_curve (GimpCurve *curve,
gdouble x,
gdouble y);
gboolean gimp_curve_is_identity (GimpCurve *curve);
void gimp_curve_get_uchar (GimpCurve *curve,
gint n_samples,
guchar *samples);
#endif /* __GIMP_CURVE_H__ */
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