e961b13ae6
Use gimp_symmetry_get_transform() instead of
gimp_symmetry_get_operation() throughout the paint code, where
possible. This allows us to combine the symmetry transform with
the ordinary brush transform, simplifying the code, improving
performance, and avoiding multiple resamplings. This also fixes
the paint-buffer size when using mandala symmetry with non-round
brushes, avoiding artifacts.
(cherry picked from commit b63af476bd)
202 lines
7.4 KiB
C
202 lines
7.4 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "libgimpbase/gimpbase.h"
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#include "libgimpmath/gimpmath.h"
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#include "paint-types.h"
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#include "gegl/gimp-gegl-loops.h"
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#include "core/gimp.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpdynamics.h"
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#include "core/gimpimage.h"
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#include "core/gimpsymmetry.h"
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#include "gimpdodgeburn.h"
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#include "gimpdodgeburnoptions.h"
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#include "gimp-intl.h"
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static void gimp_dodge_burn_paint (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpSymmetry *sym,
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GimpPaintState paint_state,
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guint32 time);
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static void gimp_dodge_burn_motion (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpSymmetry *sym);
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G_DEFINE_TYPE (GimpDodgeBurn, gimp_dodge_burn, GIMP_TYPE_BRUSH_CORE)
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#define parent_class gimp_dodge_burn_parent_class
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void
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gimp_dodge_burn_register (Gimp *gimp,
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GimpPaintRegisterCallback callback)
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{
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(* callback) (gimp,
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GIMP_TYPE_DODGE_BURN,
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GIMP_TYPE_DODGE_BURN_OPTIONS,
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"gimp-dodge-burn",
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_("Dodge/Burn"),
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"gimp-tool-dodge");
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}
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static void
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gimp_dodge_burn_class_init (GimpDodgeBurnClass *klass)
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{
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GimpPaintCoreClass *paint_core_class = GIMP_PAINT_CORE_CLASS (klass);
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GimpBrushCoreClass *brush_core_class = GIMP_BRUSH_CORE_CLASS (klass);
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paint_core_class->paint = gimp_dodge_burn_paint;
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brush_core_class->handles_changing_brush = TRUE;
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}
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static void
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gimp_dodge_burn_init (GimpDodgeBurn *dodgeburn)
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{
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}
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static void
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gimp_dodge_burn_paint (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpSymmetry *sym,
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GimpPaintState paint_state,
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guint32 time)
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{
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switch (paint_state)
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{
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case GIMP_PAINT_STATE_INIT:
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break;
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case GIMP_PAINT_STATE_MOTION:
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gimp_dodge_burn_motion (paint_core, drawable, paint_options, sym);
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break;
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case GIMP_PAINT_STATE_FINISH:
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break;
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}
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}
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static void
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gimp_dodge_burn_motion (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpSymmetry *sym)
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{
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GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_core);
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GimpDodgeBurnOptions *options = GIMP_DODGE_BURN_OPTIONS (paint_options);
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GimpContext *context = GIMP_CONTEXT (paint_options);
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GimpDynamics *dynamics = GIMP_BRUSH_CORE (paint_core)->dynamics;
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GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
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GeglBuffer *src_buffer;
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GeglBuffer *paint_buffer;
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gint paint_buffer_x;
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gint paint_buffer_y;
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gdouble fade_point;
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gdouble opacity;
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gdouble force;
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const GimpCoords *coords;
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gint paint_width, paint_height;
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gint n_strokes;
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gint i;
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fade_point = gimp_paint_options_get_fade (paint_options, image,
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paint_core->pixel_dist);
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coords = gimp_symmetry_get_origin (sym);
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opacity = gimp_dynamics_get_linear_value (dynamics,
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GIMP_DYNAMICS_OUTPUT_OPACITY,
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coords,
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paint_options,
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fade_point);
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if (opacity == 0.0)
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return;
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if (paint_options->application_mode == GIMP_PAINT_CONSTANT)
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src_buffer = gimp_paint_core_get_orig_image (paint_core);
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else
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src_buffer = gimp_drawable_get_buffer (drawable);
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gimp_brush_core_eval_transform_dynamics (brush_core,
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drawable,
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paint_options,
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coords);
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n_strokes = gimp_symmetry_get_size (sym);
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for (i = 0; i < n_strokes; i++)
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{
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coords = gimp_symmetry_get_coords (sym, i);
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gimp_brush_core_eval_transform_symmetry (brush_core, sym, i);
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paint_buffer = gimp_paint_core_get_paint_buffer (paint_core, drawable,
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paint_options,
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GIMP_LAYER_MODE_NORMAL,
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coords,
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&paint_buffer_x,
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&paint_buffer_y,
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&paint_width,
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&paint_height);
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if (! paint_buffer)
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continue;
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/* DodgeBurn the region */
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gimp_gegl_dodgeburn (src_buffer,
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GEGL_RECTANGLE (paint_buffer_x,
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paint_buffer_y,
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gegl_buffer_get_width (paint_buffer),
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gegl_buffer_get_height (paint_buffer)),
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paint_buffer,
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GEGL_RECTANGLE (0, 0, 0, 0),
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options->exposure / 100.0,
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options->type,
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options->mode);
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if (gimp_dynamics_is_output_enabled (dynamics, GIMP_DYNAMICS_OUTPUT_FORCE))
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force = gimp_dynamics_get_linear_value (dynamics,
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GIMP_DYNAMICS_OUTPUT_FORCE,
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coords,
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paint_options,
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fade_point);
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else
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force = paint_options->brush_force;
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/* Replace the newly dodgedburned area (paint_area) to the image */
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gimp_brush_core_replace_canvas (GIMP_BRUSH_CORE (paint_core), drawable,
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coords,
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MIN (opacity, GIMP_OPACITY_OPAQUE),
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gimp_context_get_opacity (context),
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gimp_paint_options_get_brush_mode (paint_options),
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force,
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paint_options->application_mode);
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}
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}
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