/usr/include/gegl-0.0/gegl-path.h is in libgegl-0.0-dev 0.0.22-2ubuntu3.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 | /* 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 Øyvind Kolås <pippin@gimp.org>
*/
#ifndef __GEGL_PATH_H__
#define __GEGL_PATH_H__
#include <glib-object.h>
#include <gegl-matrix.h>
G_BEGIN_DECLS
#define GEGL_TYPE_PATH (gegl_path_get_type ())
#define GEGL_PATH(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_PATH, GeglPath))
#define GEGL_PATH_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GEGL_TYPE_PATH, GeglPathClass))
#define GEGL_IS_PATH(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_PATH))
#define GEGL_IS_PATH_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GEGL_TYPE_PATH))
#define GEGL_PATH_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GEGL_TYPE_PATH, GeglPathClass))
typedef struct _GeglPathClass GeglPathClass;
struct _GeglPath
{
GObject parent_instance;
};
/* Internally the following structures are used, parts
* of the internal implementation are exposed through
* the path access API. The linked list api is currently
* only used for adding new path interpolators/flatteners
* with new knot interpretations.
*/
#ifndef GEGL_PATH_INTERNAL
typedef struct Point
{
gfloat x;
gfloat y;
} Point;
typedef struct GeglPathItem
{
gchar type; /* should perhaps be padded out? */
Point point[4]; /* Note: internally GeglPath operates with paths that
* have the exact number of pairs allocated.
*/
} GeglPathItem;
#endif
GType gegl_path_get_type (void) G_GNUC_CONST;
GeglPath * gegl_path_new (void);
GeglPath * gegl_path_new_from_string(const gchar *path_string);
gboolean gegl_path_is_empty (GeglPath *path);
gint gegl_path_get_n_nodes (GeglPath *path);
gdouble gegl_path_get_length (GeglPath *path);
const GeglPathItem * gegl_path_get_node (GeglPath *path,
gint pos);
gchar * gegl_path_to_string (GeglPath *path);
void gegl_path_get_matrix (GeglPath *path,
GeglMatrix3 matrix);
void gegl_path_set_matrix (GeglPath *path,
GeglMatrix3 matrix);
gdouble gegl_path_closest_point (GeglPath *path,
gdouble x,
gdouble y,
gdouble *dx,
gdouble *dy,
gint *node_pos_before);
void gegl_path_calc (GeglPath *path,
gdouble pos,
gdouble *dest_x,
gdouble *dest_y);
void gegl_path_calc_values (GeglPath *self,
guint num_samples,
gdouble *dest_xs,
gdouble *dest_ys);
void gegl_path_get_bounds (GeglPath *self,
gdouble *min_x,
gdouble *max_x,
gdouble *min_y,
gdouble *max_y);
void gegl_path_foreach (GeglPath *path,
void (*each_item) (
const GeglPathItem *knot,
gpointer data),
gpointer data);
/* iterate through only line_to / move_to commands approximating the
* same path
*/
void gegl_path_foreach_flat (GeglPath *path,
void (*each_item) (
const GeglPathItem *knot,
gpointer data),
gpointer data);
void gegl_path_clear (GeglPath *path);
void gegl_path_insert_node (GeglPath *path,
gint pos,
const GeglPathItem *knot);
void gegl_path_replace_node (GeglPath *path,
gint pos,
const GeglPathItem *knot);
void gegl_path_remove_node (GeglPath *path,
gint pos);
void gegl_path_parse_string (GeglPath *path,
const gchar *path_string);
/* convenience function for C */
void gegl_path_append (GeglPath *self,
...);
/* creates a new path if one doesn't already exist */
GeglPath * gegl_path_add_parameter_path (GeglPath *path,
const gchar *parameter_name);
/* the returned path is a special path that returns 1d
* data when rendering it's results, NULL is returned if
* this path does not exist on the queried path.
*/
GeglPath *gegl_path_get_parameter_path (GeglPath *path,
const gchar *parameter_name);
/* get a list of the named datas following this path, should not be freed */
GSList *gegl_path_parameter_get_names (GeglPath *path,
gint *count);
gdouble gegl_path_parameter_calc (GeglPath *path,
const gchar *parameter_name,
gdouble pos);
void gegl_path_parameter_get_bounds (GeglPath *self,
const gchar *parameter_name,
gdouble *min_value,
gdouble *max_value);
void gegl_path_parameter_calc_values (GeglPath *self,
const gchar *parameter_name,
guint num_samples,
gdouble *samples);
GParamSpec * gegl_param_spec_path (const gchar *name,
const gchar *nick,
const gchar *blurb,
GeglPath *default_path,
GParamFlags flags);
#define GEGL_TYPE_PARAM_PATH (gegl_param_path_get_type ())
#define GEGL_IS_PARAM_PATH(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_PARAM_PATH))
GType gegl_param_path_get_type (void) G_GNUC_CONST;
/* Linked list used internally, and for the plug-in API for new path
* interpolators.
*/
typedef struct GeglPathList
{
struct GeglPathList *next;
GeglPathItem d;
} GeglPathList;
/* appends to path list, if head is NULL a new list is created */
GeglPathList * gegl_path_list_append (GeglPathList *head, ...);
/* frees up a path list */
GeglPathList * gegl_path_list_destroy (GeglPathList *path);
/* add a new control point type to GeglPath, this new type works in everything
* from the _add () functions (number of arguments determined automatically)
* to the string parsing and serialization functions.
*/
void gegl_path_add_type (gchar type,
gint pairs,
const gchar *description);
/* Add a new flattener, the flattener should produce a type of path that
* GeglPath already understands, if the flattener is unable to flatten
* the incoming path (doesn't understand the instructions), the original
* path should be returned.
*/
void gegl_path_add_flattener (GeglPathList *(*func) (GeglPathList *original));
#include <gegl-buffer.h>
/* this can and should be the responsiblity of cairo */
void gegl_path_fill (GeglBuffer *buffer,
GeglPath *path,
GeglColor *color,
gboolean winding);
/* Stroke the path with a brush having the specified attributes
* (code from horizon)
*/
void gegl_path_stroke (GeglBuffer *buffer,
const GeglRectangle *clip_rect,
GeglPath *vector,
GeglColor *color,
gdouble linewidth,
gdouble hardness,
gdouble opacity);
void gegl_path_freeze (GeglPath *path);
void gegl_path_thaw (GeglPath *path);
G_END_DECLS
#endif /* __GEGL_PATH_H__ */
|