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
|
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimppath.h
* Copyright (C) 2002 Simon Budig <simon@gimp.org>
*
* 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/>.
*/
#pragma once
#include "core/gimpitem.h"
#define GIMP_TYPE_PATH (gimp_path_get_type ())
#define GIMP_PATH(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_PATH, GimpPath))
#define GIMP_PATH_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_PATH, GimpPathClass))
#define GIMP_IS_PATH(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_PATH))
#define GIMP_IS_PATH_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_PATH))
#define GIMP_PATH_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_PATH, GimpPathClass))
typedef struct _GimpPathClass GimpPathClass;
struct _GimpPath
{
GimpItem parent_instance;
GQueue *strokes; /* Queue of GimpStrokes */
GHashTable *stroke_to_list; /* Map from GimpStroke to strokes listnode */
gint last_stroke_id;
gint freeze_count;
gdouble precision;
GimpBezierDesc *bezier_desc; /* Cached bezier representation */
gboolean bounds_valid; /* Cached bounding box */
gboolean bounds_empty;
gdouble bounds_x1;
gdouble bounds_y1;
gdouble bounds_x2;
gdouble bounds_y2;
};
struct _GimpPathClass
{
GimpItemClass parent_class;
/* signals */
void (* freeze) (GimpPath *path);
void (* thaw) (GimpPath *path);
/* virtual functions */
void (* stroke_add) (GimpPath *path,
GimpStroke *stroke);
void (* stroke_remove) (GimpPath *path,
GimpStroke *stroke);
GimpStroke * (* stroke_get) (GimpPath *path,
const GimpCoords *coord);
GimpStroke * (* stroke_get_next) (GimpPath *path,
GimpStroke *prev);
gdouble (* stroke_get_length) (GimpPath *path,
GimpStroke *stroke);
GimpAnchor * (* anchor_get) (GimpPath *path,
const GimpCoords *coord,
GimpStroke **ret_stroke);
void (* anchor_delete) (GimpPath *path,
GimpAnchor *anchor);
gdouble (* get_length) (GimpPath *path,
const GimpAnchor *start);
gdouble (* get_distance) (GimpPath *path,
const GimpCoords *coord);
gint (* interpolate) (GimpPath *path,
GimpStroke *stroke,
gdouble precision,
gint max_points,
GimpCoords *ret_coords);
GimpBezierDesc * (* make_bezier) (GimpPath *path);
};
/* path utility functions */
GType gimp_path_get_type (void) G_GNUC_CONST;
GimpPath * gimp_path_new (GimpImage *image,
const gchar *name);
GimpPath * gimp_path_get_parent (GimpPath *path);
void gimp_path_freeze (GimpPath *path);
void gimp_path_thaw (GimpPath *path);
void gimp_path_copy_strokes (GimpPath *src_path,
GimpPath *dest_path);
void gimp_path_add_strokes (GimpPath *src_path,
GimpPath *dest_path);
/* accessing / modifying the anchors */
GimpAnchor * gimp_path_anchor_get (GimpPath *path,
const GimpCoords *coord,
GimpStroke **ret_stroke);
/* prev == NULL: "first" anchor */
GimpAnchor * gimp_path_anchor_get_next (GimpPath *path,
const GimpAnchor *prev);
/* type will be an xorable enum:
* VECTORS_NONE, VECTORS_FIX_ANGLE, VECTORS_FIX_RATIO, VECTORS_RESTRICT_ANGLE
* or so.
*/
void gimp_path_anchor_move_relative (GimpPath *path,
GimpAnchor *anchor,
const GimpCoords *deltacoord,
gint type);
void gimp_path_anchor_move_absolute (GimpPath *path,
GimpAnchor *anchor,
const GimpCoords *coord,
gint type);
void gimp_path_anchor_delete (GimpPath *path,
GimpAnchor *anchor);
void gimp_path_anchor_select (GimpPath *path,
GimpStroke *target_stroke,
GimpAnchor *anchor,
gboolean selected,
gboolean exclusive);
/* GimpStroke is a connected component of a GimpPath object */
void gimp_path_stroke_add (GimpPath *path,
GimpStroke *stroke);
void gimp_path_stroke_remove (GimpPath *path,
GimpStroke *stroke);
gint gimp_path_get_n_strokes (GimpPath *path);
GimpStroke * gimp_path_stroke_get (GimpPath *path,
const GimpCoords *coord);
GimpStroke * gimp_path_stroke_get_by_id (GimpPath *path,
gint id);
/* prev == NULL: "first" stroke */
GimpStroke * gimp_path_stroke_get_next (GimpPath *path,
GimpStroke *prev);
gdouble gimp_path_stroke_get_length (GimpPath *path,
GimpStroke *stroke);
/* accessing the shape of the curve */
gdouble gimp_path_get_length (GimpPath *path,
const GimpAnchor *start);
gdouble gimp_path_get_distance (GimpPath *path,
const GimpCoords *coord);
/* returns the number of valid coordinates */
gint gimp_path_interpolate (GimpPath *path,
GimpStroke *stroke,
gdouble precision,
gint max_points,
GimpCoords *ret_coords);
gboolean gimp_path_attached_to_vector_layer
(GimpPath *path,
GimpImage *image);
/* usually overloaded */
/* returns a bezier representation */
const GimpBezierDesc * gimp_path_get_bezier (GimpPath *path);
|
