189 lines
8.8 KiB
C
189 lines
8.8 KiB
C
|
/* PIKA - Photo and Image Kooker Application
|
||
|
|
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
|
||
|
|
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
|
||
|
|
*
|
||
|
|
* Original copyright, applying to most contents (license remains unchanged):
|
||
|
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
||
|
|
*
|
||
|
|
* pikavectors.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/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __PIKA_VECTORS_H__
|
||
|
|
#define __PIKA_VECTORS_H__
|
||
|
|
|
||
|
|
#include "core/pikaitem.h"
|
||
|
|
|
||
|
|
#define PIKA_TYPE_VECTORS (pika_vectors_get_type ())
|
||
|
|
#define PIKA_VECTORS(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PIKA_TYPE_VECTORS, PikaVectors))
|
||
|
|
#define PIKA_VECTORS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PIKA_TYPE_VECTORS, PikaVectorsClass))
|
||
|
|
#define PIKA_IS_VECTORS(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PIKA_TYPE_VECTORS))
|
||
|
|
#define PIKA_IS_VECTORS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PIKA_TYPE_VECTORS))
|
||
|
|
#define PIKA_VECTORS_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PIKA_TYPE_VECTORS, PikaVectorsClass))
|
||
|
|
|
||
|
|
|
||
|
|
typedef struct _PikaVectorsClass PikaVectorsClass;
|
||
|
|
|
||
|
|
struct _PikaVectors
|
||
|
|
{
|
||
|
|
PikaItem parent_instance;
|
||
|
|
|
||
|
|
GQueue *strokes; /* Queue of PikaStrokes */
|
||
|
|
GHashTable *stroke_to_list; /* Map from PikaStroke to strokes listnode */
|
||
|
|
gint last_stroke_id;
|
||
|
|
|
||
|
|
gint freeze_count;
|
||
|
|
gdouble precision;
|
||
|
|
|
||
|
|
PikaBezierDesc *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 _PikaVectorsClass
|
||
|
|
{
|
||
|
|
PikaItemClass parent_class;
|
||
|
|
|
||
|
|
/* signals */
|
||
|
|
void (* freeze) (PikaVectors *vectors);
|
||
|
|
void (* thaw) (PikaVectors *vectors);
|
||
|
|
|
||
|
|
/* virtual functions */
|
||
|
|
void (* stroke_add) (PikaVectors *vectors,
|
||
|
|
PikaStroke *stroke);
|
||
|
|
void (* stroke_remove) (PikaVectors *vectors,
|
||
|
|
PikaStroke *stroke);
|
||
|
|
PikaStroke * (* stroke_get) (PikaVectors *vectors,
|
||
|
|
const PikaCoords *coord);
|
||
|
|
PikaStroke * (* stroke_get_next) (PikaVectors *vectors,
|
||
|
|
PikaStroke *prev);
|
||
|
|
gdouble (* stroke_get_length) (PikaVectors *vectors,
|
||
|
|
PikaStroke *stroke);
|
||
|
|
PikaAnchor * (* anchor_get) (PikaVectors *vectors,
|
||
|
|
const PikaCoords *coord,
|
||
|
|
PikaStroke **ret_stroke);
|
||
|
|
void (* anchor_delete) (PikaVectors *vectors,
|
||
|
|
PikaAnchor *anchor);
|
||
|
|
gdouble (* get_length) (PikaVectors *vectors,
|
||
|
|
const PikaAnchor *start);
|
||
|
|
gdouble (* get_distance) (PikaVectors *vectors,
|
||
|
|
const PikaCoords *coord);
|
||
|
|
gint (* interpolate) (PikaVectors *vectors,
|
||
|
|
PikaStroke *stroke,
|
||
|
|
gdouble precision,
|
||
|
|
gint max_points,
|
||
|
|
PikaCoords *ret_coords);
|
||
|
|
PikaBezierDesc * (* make_bezier) (PikaVectors *vectors);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* vectors utility functions */
|
||
|
|
|
||
|
|
GType pika_vectors_get_type (void) G_GNUC_CONST;
|
||
|
|
|
||
|
|
PikaVectors * pika_vectors_new (PikaImage *image,
|
||
|
|
const gchar *name);
|
||
|
|
|
||
|
|
PikaVectors * pika_vectors_get_parent (PikaVectors *vectors);
|
||
|
|
|
||
|
|
void pika_vectors_freeze (PikaVectors *vectors);
|
||
|
|
void pika_vectors_thaw (PikaVectors *vectors);
|
||
|
|
|
||
|
|
void pika_vectors_copy_strokes (PikaVectors *src_vectors,
|
||
|
|
PikaVectors *dest_vectors);
|
||
|
|
void pika_vectors_add_strokes (PikaVectors *src_vectors,
|
||
|
|
PikaVectors *dest_vectors);
|
||
|
|
|
||
|
|
|
||
|
|
/* accessing / modifying the anchors */
|
||
|
|
|
||
|
|
PikaAnchor * pika_vectors_anchor_get (PikaVectors *vectors,
|
||
|
|
const PikaCoords *coord,
|
||
|
|
PikaStroke **ret_stroke);
|
||
|
|
|
||
|
|
/* prev == NULL: "first" anchor */
|
||
|
|
PikaAnchor * pika_vectors_anchor_get_next (PikaVectors *vectors,
|
||
|
|
const PikaAnchor *prev);
|
||
|
|
|
||
|
|
/* type will be an xorable enum:
|
||
|
|
* VECTORS_NONE, VECTORS_FIX_ANGLE, VECTORS_FIX_RATIO, VECTORS_RESTRICT_ANGLE
|
||
|
|
* or so.
|
||
|
|
*/
|
||
|
|
void pika_vectors_anchor_move_relative (PikaVectors *vectors,
|
||
|
|
PikaAnchor *anchor,
|
||
|
|
const PikaCoords *deltacoord,
|
||
|
|
gint type);
|
||
|
|
void pika_vectors_anchor_move_absolute (PikaVectors *vectors,
|
||
|
|
PikaAnchor *anchor,
|
||
|
|
const PikaCoords *coord,
|
||
|
|
gint type);
|
||
|
|
|
||
|
|
void pika_vectors_anchor_delete (PikaVectors *vectors,
|
||
|
|
PikaAnchor *anchor);
|
||
|
|
|
||
|
|
void pika_vectors_anchor_select (PikaVectors *vectors,
|
||
|
|
PikaStroke *target_stroke,
|
||
|
|
PikaAnchor *anchor,
|
||
|
|
gboolean selected,
|
||
|
|
gboolean exclusive);
|
||
|
|
|
||
|
|
|
||
|
|
/* PikaStroke is a connected component of a PikaVectors object */
|
||
|
|
|
||
|
|
void pika_vectors_stroke_add (PikaVectors *vectors,
|
||
|
|
PikaStroke *stroke);
|
||
|
|
void pika_vectors_stroke_remove (PikaVectors *vectors,
|
||
|
|
PikaStroke *stroke);
|
||
|
|
gint pika_vectors_get_n_strokes (PikaVectors *vectors);
|
||
|
|
PikaStroke * pika_vectors_stroke_get (PikaVectors *vectors,
|
||
|
|
const PikaCoords *coord);
|
||
|
|
PikaStroke * pika_vectors_stroke_get_by_id (PikaVectors *vectors,
|
||
|
|
gint id);
|
||
|
|
|
||
|
|
/* prev == NULL: "first" stroke */
|
||
|
|
PikaStroke * pika_vectors_stroke_get_next (PikaVectors *vectors,
|
||
|
|
PikaStroke *prev);
|
||
|
|
gdouble pika_vectors_stroke_get_length (PikaVectors *vectors,
|
||
|
|
PikaStroke *stroke);
|
||
|
|
|
||
|
|
/* accessing the shape of the curve */
|
||
|
|
|
||
|
|
gdouble pika_vectors_get_length (PikaVectors *vectors,
|
||
|
|
const PikaAnchor *start);
|
||
|
|
gdouble pika_vectors_get_distance (PikaVectors *vectors,
|
||
|
|
const PikaCoords *coord);
|
||
|
|
|
||
|
|
/* returns the number of valid coordinates */
|
||
|
|
|
||
|
|
gint pika_vectors_interpolate (PikaVectors *vectors,
|
||
|
|
PikaStroke *stroke,
|
||
|
|
gdouble precision,
|
||
|
|
gint max_points,
|
||
|
|
PikaCoords *ret_coords);
|
||
|
|
|
||
|
|
/* usually overloaded */
|
||
|
|
|
||
|
|
/* returns a bezier representation */
|
||
|
|
const PikaBezierDesc * pika_vectors_get_bezier (PikaVectors *vectors);
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* __PIKA_VECTORS_H__ */
|
