129 lines
5.7 KiB
C
129 lines
5.7 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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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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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef __PIKA_CURVE_H__
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#define __PIKA_CURVE_H__
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#include "pikadata.h"
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#define PIKA_TYPE_CURVE (pika_curve_get_type ())
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#define PIKA_CURVE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PIKA_TYPE_CURVE, PikaCurve))
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#define PIKA_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PIKA_TYPE_CURVE, PikaCurveClass))
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#define PIKA_IS_CURVE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PIKA_TYPE_CURVE))
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#define PIKA_IS_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PIKA_TYPE_CURVE))
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#define PIKA_CURVE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PIKA_TYPE_CURVE, PikaCurveClass))
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typedef struct _PikaCurvePoint PikaCurvePoint;
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typedef struct _PikaCurveClass PikaCurveClass;
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struct _PikaCurvePoint
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{
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gdouble x;
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gdouble y;
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PikaCurvePointType type;
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};
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struct _PikaCurve
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{
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PikaData parent_instance;
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PikaCurveType curve_type;
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gint n_points;
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PikaCurvePoint *points;
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gint n_samples;
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gdouble *samples;
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gboolean identity; /* whether the curve is an identity mapping */
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};
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struct _PikaCurveClass
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{
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PikaDataClass parent_class;
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};
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GType pika_curve_get_type (void) G_GNUC_CONST;
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PikaData * pika_curve_new (const gchar *name);
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PikaData * pika_curve_get_standard (void);
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void pika_curve_reset (PikaCurve *curve,
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gboolean reset_type);
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void pika_curve_set_curve_type (PikaCurve *curve,
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PikaCurveType curve_type);
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PikaCurveType pika_curve_get_curve_type (PikaCurve *curve);
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gint pika_curve_get_n_points (PikaCurve *curve);
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void pika_curve_set_n_samples (PikaCurve *curve,
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gint n_samples);
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gint pika_curve_get_n_samples (PikaCurve *curve);
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gint pika_curve_get_point_at (PikaCurve *curve,
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gdouble x);
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gint pika_curve_get_closest_point (PikaCurve *curve,
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gdouble x,
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gdouble y,
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gdouble max_distance);
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gint pika_curve_add_point (PikaCurve *curve,
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gdouble x,
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gdouble y);
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void pika_curve_delete_point (PikaCurve *curve,
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gint point);
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void pika_curve_set_point (PikaCurve *curve,
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gint point,
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gdouble x,
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gdouble y);
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void pika_curve_move_point (PikaCurve *curve,
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gint point,
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gdouble y);
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void pika_curve_get_point (PikaCurve *curve,
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gint point,
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gdouble *x,
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gdouble *y);
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void pika_curve_set_point_type (PikaCurve *curve,
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gint point,
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PikaCurvePointType type);
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PikaCurvePointType pika_curve_get_point_type (PikaCurve *curve,
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gint point);
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void pika_curve_clear_points (PikaCurve *curve);
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void pika_curve_set_curve (PikaCurve *curve,
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gdouble x,
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gdouble y);
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gboolean pika_curve_is_identity (PikaCurve *curve);
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void pika_curve_get_uchar (PikaCurve *curve,
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gint n_samples,
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guchar *samples);
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#endif /* __PIKA_CURVE_H__ */
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