/usr/include/gegl-0.2/gegl-curve.h is in libgegl-dev 0.2.0-7+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 | /* This file is part of GEGL
*
* GEGL is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* GEGL 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2007 Mark Probst <mark.probst@gmail.com>
*/
#ifndef __GEGL_CURVE_H__
#define __GEGL_CURVE_H__
/***
* GeglCurve:
*
* #GeglCurve is a curve describing a unique mapping of values.
*
* Used for things like the curves widget in gimp it is a form of doodle
* alpha.
*/
#include <glib-object.h>
G_BEGIN_DECLS
#define GEGL_TYPE_CURVE (gegl_curve_get_type ())
#define GEGL_CURVE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_CURVE, GeglCurve))
#define GEGL_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GEGL_TYPE_CURVE, GeglCurveClass))
#define GEGL_IS_CURVE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_CURVE))
#define GEGL_IS_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GEGL_TYPE_CURVE))
#define GEGL_CURVE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GEGL_TYPE_CURVE, GeglCurveClass))
typedef struct _GeglCurveClass GeglCurveClass;
struct _GeglCurve
{
GObject parent_instance;
};
struct _GeglCurveClass
{
GObjectClass parent_class;
};
GType gegl_curve_get_type (void) G_GNUC_CONST;
/**
* gegl_curve_new:
* @y_min: minimum y value for curve.
* @y_max: maximum y value for curve.
*
* Create a #GeglCurve that can store a curve with values between @y_min and
* @y_max.
*
* Returns the newly created #GeglCurve.
*/
GeglCurve * gegl_curve_new (gdouble y_min,
gdouble y_max);
/**
* gegl_curve_get_y_bounds:
* @curve: a #GeglCurve.
* @min_y: return location for minimal value.
* @max_y: return location for maximal value.
*
* Get the bounds on the values of the curve and store the values in
* the return locaitons provided in @min_y and @max_y.
*/
void gegl_curve_get_y_bounds (GeglCurve *curve,
gdouble *min_y,
gdouble *max_y);
/**
* gegl_curve_add_point:
* @curve: a #GeglCurve.
* @x: x coordinate
* @y: y coordinate
*
* Add a point to the curve at @x @y (replacing the value exactly for @x if it
* already exists.
*/
guint gegl_curve_add_point (GeglCurve *curve,
gdouble x,
gdouble y);
/**
* gegl_curve_get_point:
* @curve: a #GeglCurve.
* @index: the position of the value number to retrieve.
* @x: x coordinate return location.
* @y: y coordinate return location.
*
* Retrive the coordinates for an index.
*/
void gegl_curve_get_point (GeglCurve *curve,
guint index,
gdouble *x,
gdouble *y);
/**
* gegl_curve_set_point:
* @curve: a #GeglCurve.
* @index: the position of the value number to retrieve.
* @x: x coordinate
* @y: y coordinate
*
* Replace an existing point in a curve.
*/
void gegl_curve_set_point (GeglCurve *curve,
guint index,
gdouble x,
gdouble y);
/**
* gegl_curve_num_points:
* @curve: a #GeglCurve.
*
* Retrieve the number of points in the curve.
*
* Returns the number of points for the coordinates in the curve.
*/
guint gegl_curve_num_points (GeglCurve *curve);
/**
* gegl_curve_calc_value:
* @curve: a #GeglCurve.
*
* Retrieve the number of points in the curve.
*
* Returns the number of points for the coordinates in the curve.
*/
gdouble gegl_curve_calc_value (GeglCurve *curve,
gdouble x);
/**
* gegl_curve_calc_values:
* @curve: a #GeglCurve.
* @x_min: the minimum value to compute for
* @x_max: the maxmimum value to compute for
* @num_samples: number of samples to calculate
* @xs: return location for the x coordinates
* @ys: return location for the y coordinates
*
* Compute a set (lookup table) of coordinates.
*/
void gegl_curve_calc_values (GeglCurve *curve,
gdouble x_min,
gdouble x_max,
guint num_samples,
gdouble *xs,
gdouble *ys);
/***
*/
#define GEGL_TYPE_PARAM_CURVE (gegl_param_curve_get_type ())
#define GEGL_IS_PARAM_SPEC_CURVE(pspec) (G_TYPE_CHECK_INSTANCE_TYPE ((pspec), GEGL_TYPE_PARAM_CURVE))
GeglCurve * gegl_curve_default_curve (void) G_GNUC_CONST;
GType gegl_param_curve_get_type (void) G_GNUC_CONST;
GParamSpec * gegl_param_spec_curve (const gchar *name,
const gchar *nick,
const gchar *blurb,
GeglCurve *default_curve,
GParamFlags flags);
G_END_DECLS
#endif /* __GEGL_CURVE_H__ */
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