291 lines
11 KiB
C
291 lines
11 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
|
||
|
|
*
|
||
|
|
* 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/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "config.h"
|
||
|
|
|
||
|
|
#include <gdk-pixbuf/gdk-pixbuf.h>
|
||
|
|
#include <gegl.h>
|
||
|
|
|
||
|
|
#include "paint-types.h"
|
||
|
|
|
||
|
|
#include "gegl/pika-gegl-loops.h"
|
||
|
|
|
||
|
|
#include "core/pika.h"
|
||
|
|
#include "core/pikabrush.h"
|
||
|
|
#include "core/pikadrawable.h"
|
||
|
|
#include "core/pikadynamics.h"
|
||
|
|
#include "core/pikaimage.h"
|
||
|
|
#include "core/pikapickable.h"
|
||
|
|
#include "core/pikasymmetry.h"
|
||
|
|
#include "core/pikatempbuf.h"
|
||
|
|
|
||
|
|
#include "pikaconvolve.h"
|
||
|
|
#include "pikaconvolveoptions.h"
|
||
|
|
|
||
|
|
#include "pika-intl.h"
|
||
|
|
|
||
|
|
|
||
|
|
#define FIELD_COLS 4
|
||
|
|
#define MIN_BLUR 64 /* (8/9 original pixel) */
|
||
|
|
#define MAX_BLUR 0.25 /* (1/33 original pixel) */
|
||
|
|
#define MIN_SHARPEN -512
|
||
|
|
#define MAX_SHARPEN -64
|
||
|
|
|
||
|
|
|
||
|
|
static void pika_convolve_paint (PikaPaintCore *paint_core,
|
||
|
|
GList *drawables,
|
||
|
|
PikaPaintOptions *paint_options,
|
||
|
|
PikaSymmetry *sym,
|
||
|
|
PikaPaintState paint_state,
|
||
|
|
guint32 time);
|
||
|
|
static void pika_convolve_motion (PikaPaintCore *paint_core,
|
||
|
|
PikaDrawable *drawable,
|
||
|
|
PikaPaintOptions *paint_options,
|
||
|
|
PikaSymmetry *sym);
|
||
|
|
|
||
|
|
static void pika_convolve_calculate_matrix (PikaConvolve *convolve,
|
||
|
|
PikaConvolveType type,
|
||
|
|
gint radius_x,
|
||
|
|
gint radius_y,
|
||
|
|
gdouble rate);
|
||
|
|
static gdouble pika_convolve_sum_matrix (const gfloat *matrix);
|
||
|
|
|
||
|
|
|
||
|
|
G_DEFINE_TYPE (PikaConvolve, pika_convolve, PIKA_TYPE_BRUSH_CORE)
|
||
|
|
|
||
|
|
|
||
|
|
void
|
||
|
|
pika_convolve_register (Pika *pika,
|
||
|
|
PikaPaintRegisterCallback callback)
|
||
|
|
{
|
||
|
|
(* callback) (pika,
|
||
|
|
PIKA_TYPE_CONVOLVE,
|
||
|
|
PIKA_TYPE_CONVOLVE_OPTIONS,
|
||
|
|
"pika-convolve",
|
||
|
|
_("Convolve"),
|
||
|
|
"pika-tool-blur");
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_convolve_class_init (PikaConvolveClass *klass)
|
||
|
|
{
|
||
|
|
PikaPaintCoreClass *paint_core_class = PIKA_PAINT_CORE_CLASS (klass);
|
||
|
|
|
||
|
|
paint_core_class->paint = pika_convolve_paint;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_convolve_init (PikaConvolve *convolve)
|
||
|
|
{
|
||
|
|
gint i;
|
||
|
|
|
||
|
|
for (i = 0; i < 9; i++)
|
||
|
|
convolve->matrix[i] = 1.0;
|
||
|
|
|
||
|
|
convolve->matrix_divisor = 9.0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_convolve_paint (PikaPaintCore *paint_core,
|
||
|
|
GList *drawables,
|
||
|
|
PikaPaintOptions *paint_options,
|
||
|
|
PikaSymmetry *sym,
|
||
|
|
PikaPaintState paint_state,
|
||
|
|
guint32 time)
|
||
|
|
{
|
||
|
|
g_return_if_fail (g_list_length (drawables) == 1);
|
||
|
|
|
||
|
|
switch (paint_state)
|
||
|
|
{
|
||
|
|
case PIKA_PAINT_STATE_MOTION:
|
||
|
|
for (GList *iter = drawables; iter; iter = iter->next)
|
||
|
|
pika_convolve_motion (paint_core, iter->data, paint_options, sym);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_convolve_motion (PikaPaintCore *paint_core,
|
||
|
|
PikaDrawable *drawable,
|
||
|
|
PikaPaintOptions *paint_options,
|
||
|
|
PikaSymmetry *sym)
|
||
|
|
{
|
||
|
|
PikaConvolve *convolve = PIKA_CONVOLVE (paint_core);
|
||
|
|
PikaBrushCore *brush_core = PIKA_BRUSH_CORE (paint_core);
|
||
|
|
PikaConvolveOptions *options = PIKA_CONVOLVE_OPTIONS (paint_options);
|
||
|
|
PikaContext *context = PIKA_CONTEXT (paint_options);
|
||
|
|
PikaDynamics *dynamics = PIKA_BRUSH_CORE (paint_core)->dynamics;
|
||
|
|
PikaImage *image = pika_item_get_image (PIKA_ITEM (drawable));
|
||
|
|
GeglBuffer *paint_buffer;
|
||
|
|
gint paint_buffer_x;
|
||
|
|
gint paint_buffer_y;
|
||
|
|
PikaTempBuf *temp_buf;
|
||
|
|
GeglBuffer *convolve_buffer;
|
||
|
|
gdouble fade_point;
|
||
|
|
gdouble opacity;
|
||
|
|
gdouble rate;
|
||
|
|
PikaCoords coords;
|
||
|
|
gint off_x, off_y;
|
||
|
|
gint paint_width, paint_height;
|
||
|
|
gint n_strokes;
|
||
|
|
gint i;
|
||
|
|
|
||
|
|
fade_point = pika_paint_options_get_fade (paint_options, image,
|
||
|
|
paint_core->pixel_dist);
|
||
|
|
|
||
|
|
pika_item_get_offset (PIKA_ITEM (drawable), &off_x, &off_y);
|
||
|
|
coords = *(pika_symmetry_get_origin (sym));
|
||
|
|
coords.x -= off_x;
|
||
|
|
coords.y -= off_y;
|
||
|
|
pika_symmetry_set_origin (sym, drawable, &coords);
|
||
|
|
|
||
|
|
opacity = pika_dynamics_get_linear_value (dynamics,
|
||
|
|
PIKA_DYNAMICS_OUTPUT_OPACITY,
|
||
|
|
&coords,
|
||
|
|
paint_options,
|
||
|
|
fade_point);
|
||
|
|
if (opacity == 0.0)
|
||
|
|
return;
|
||
|
|
|
||
|
|
pika_brush_core_eval_transform_dynamics (PIKA_BRUSH_CORE (paint_core),
|
||
|
|
image,
|
||
|
|
paint_options,
|
||
|
|
&coords);
|
||
|
|
n_strokes = pika_symmetry_get_size (sym);
|
||
|
|
for (i = 0; i < n_strokes; i++)
|
||
|
|
{
|
||
|
|
coords = *(pika_symmetry_get_coords (sym, i));
|
||
|
|
|
||
|
|
pika_brush_core_eval_transform_symmetry (brush_core, sym, i);
|
||
|
|
|
||
|
|
paint_buffer = pika_paint_core_get_paint_buffer (paint_core, drawable,
|
||
|
|
paint_options,
|
||
|
|
PIKA_LAYER_MODE_NORMAL,
|
||
|
|
&coords,
|
||
|
|
&paint_buffer_x,
|
||
|
|
&paint_buffer_y,
|
||
|
|
&paint_width,
|
||
|
|
&paint_height);
|
||
|
|
if (! paint_buffer)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
rate = (options->rate *
|
||
|
|
pika_dynamics_get_linear_value (dynamics,
|
||
|
|
PIKA_DYNAMICS_OUTPUT_RATE,
|
||
|
|
&coords,
|
||
|
|
paint_options,
|
||
|
|
fade_point));
|
||
|
|
|
||
|
|
pika_convolve_calculate_matrix (convolve, options->type,
|
||
|
|
pika_brush_get_width (brush_core->brush) / 2,
|
||
|
|
pika_brush_get_height (brush_core->brush) / 2,
|
||
|
|
rate);
|
||
|
|
|
||
|
|
/* need a linear buffer for pika_gegl_convolve() */
|
||
|
|
temp_buf = pika_temp_buf_new (gegl_buffer_get_width (paint_buffer),
|
||
|
|
gegl_buffer_get_height (paint_buffer),
|
||
|
|
gegl_buffer_get_format (paint_buffer));
|
||
|
|
convolve_buffer = pika_temp_buf_create_buffer (temp_buf);
|
||
|
|
pika_temp_buf_unref (temp_buf);
|
||
|
|
|
||
|
|
pika_gegl_buffer_copy (
|
||
|
|
pika_drawable_get_buffer (drawable),
|
||
|
|
GEGL_RECTANGLE (paint_buffer_x,
|
||
|
|
paint_buffer_y,
|
||
|
|
gegl_buffer_get_width (paint_buffer),
|
||
|
|
gegl_buffer_get_height (paint_buffer)),
|
||
|
|
GEGL_ABYSS_NONE,
|
||
|
|
convolve_buffer,
|
||
|
|
GEGL_RECTANGLE (0, 0, 0, 0));
|
||
|
|
|
||
|
|
pika_gegl_convolve (convolve_buffer,
|
||
|
|
GEGL_RECTANGLE (0, 0,
|
||
|
|
gegl_buffer_get_width (convolve_buffer),
|
||
|
|
gegl_buffer_get_height (convolve_buffer)),
|
||
|
|
paint_buffer,
|
||
|
|
GEGL_RECTANGLE (0, 0,
|
||
|
|
gegl_buffer_get_width (paint_buffer),
|
||
|
|
gegl_buffer_get_height (paint_buffer)),
|
||
|
|
convolve->matrix, 3, convolve->matrix_divisor,
|
||
|
|
PIKA_NORMAL_CONVOL, TRUE);
|
||
|
|
|
||
|
|
g_object_unref (convolve_buffer);
|
||
|
|
|
||
|
|
pika_brush_core_replace_canvas (brush_core, drawable,
|
||
|
|
&coords,
|
||
|
|
MIN (opacity, PIKA_OPACITY_OPAQUE),
|
||
|
|
pika_context_get_opacity (context),
|
||
|
|
pika_paint_options_get_brush_mode (paint_options),
|
||
|
|
1.0,
|
||
|
|
PIKA_PAINT_INCREMENTAL);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_convolve_calculate_matrix (PikaConvolve *convolve,
|
||
|
|
PikaConvolveType type,
|
||
|
|
gint radius_x,
|
||
|
|
gint radius_y,
|
||
|
|
gdouble rate)
|
||
|
|
{
|
||
|
|
/* find percent of tool pressure */
|
||
|
|
const gdouble percent = MIN (rate / 100.0, 1.0);
|
||
|
|
|
||
|
|
convolve->matrix[0] = (radius_x && radius_y) ? 1.0 : 0.0;
|
||
|
|
convolve->matrix[1] = (radius_y) ? 1.0 : 0.0;
|
||
|
|
convolve->matrix[2] = (radius_x && radius_y) ? 1.0 : 0.0;
|
||
|
|
convolve->matrix[3] = (radius_x) ? 1.0 : 0.0;
|
||
|
|
|
||
|
|
/* get the appropriate convolution matrix and size and divisor */
|
||
|
|
switch (type)
|
||
|
|
{
|
||
|
|
case PIKA_CONVOLVE_BLUR:
|
||
|
|
convolve->matrix[4] = MIN_BLUR + percent * (MAX_BLUR - MIN_BLUR);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PIKA_CONVOLVE_SHARPEN:
|
||
|
|
convolve->matrix[4] = MIN_SHARPEN + percent * (MAX_SHARPEN - MIN_SHARPEN);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
convolve->matrix[5] = (radius_x) ? 1.0 : 0.0;
|
||
|
|
convolve->matrix[6] = (radius_x && radius_y) ? 1.0 : 0.0;
|
||
|
|
convolve->matrix[7] = (radius_y) ? 1.0 : 0.0;
|
||
|
|
convolve->matrix[8] = (radius_x && radius_y) ? 1.0 : 0.0;
|
||
|
|
|
||
|
|
convolve->matrix_divisor = pika_convolve_sum_matrix (convolve->matrix);
|
||
|
|
}
|
||
|
|
|
||
|
|
static gdouble
|
||
|
|
pika_convolve_sum_matrix (const gfloat *matrix)
|
||
|
|
{
|
||
|
|
gdouble sum = 0.0;
|
||
|
|
gint i;
|
||
|
|
|
||
|
|
for (i = 0; i < 9; i++)
|
||
|
|
sum += matrix[i];
|
||
|
|
|
||
|
|
return sum;
|
||
|
|
}
|
