PIKApp/app/paint/pikabrushcore.h

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2023-09-26 00:35:21 +02:00
/* 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/>.
*/
#ifndef __PIKA_BRUSH_CORE_H__
#define __PIKA_BRUSH_CORE_H__
#include "pikapaintcore.h"
#define BRUSH_CORE_SUBSAMPLE 4
#define BRUSH_CORE_SOLID_SUBSAMPLE 2
#define BRUSH_CORE_JITTER_LUTSIZE 360
#define PIKA_TYPE_BRUSH_CORE (pika_brush_core_get_type ())
#define PIKA_BRUSH_CORE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PIKA_TYPE_BRUSH_CORE, PikaBrushCore))
#define PIKA_BRUSH_CORE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PIKA_TYPE_BRUSH_CORE, PikaBrushCoreClass))
#define PIKA_IS_BRUSH_CORE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PIKA_TYPE_BRUSH_CORE))
#define PIKA_IS_BRUSH_CORE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PIKA_TYPE_BRUSH_CORE))
#define PIKA_BRUSH_CORE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PIKA_TYPE_BRUSH_CORE, PikaBrushCoreClass))
typedef struct _PikaBrushCoreClass PikaBrushCoreClass;
struct _PikaBrushCore
{
PikaPaintCore parent_instance;
PikaBrush *main_brush;
PikaBrush *brush;
PikaDynamics *dynamics;
gdouble spacing;
gdouble scale;
gdouble aspect_ratio;
gdouble angle;
gboolean reflect;
gdouble hardness;
gdouble symmetry_angle;
gboolean symmetry_reflect;
/* brush buffers */
PikaTempBuf *pressure_brush;
PikaTempBuf *solid_brushes[BRUSH_CORE_SOLID_SUBSAMPLE][BRUSH_CORE_SOLID_SUBSAMPLE];
const PikaTempBuf *last_solid_brush_mask;
gboolean solid_cache_invalid;
const PikaTempBuf *transform_brush;
const PikaTempBuf *transform_pixmap;
PikaTempBuf *subsample_brushes[BRUSH_CORE_SUBSAMPLE + 1][BRUSH_CORE_SUBSAMPLE + 1];
const PikaTempBuf *last_subsample_brush_mask;
gboolean subsample_cache_invalid;
gdouble jitter;
gdouble jitter_lut_x[BRUSH_CORE_JITTER_LUTSIZE];
gdouble jitter_lut_y[BRUSH_CORE_JITTER_LUTSIZE];
GRand *rand;
};
struct _PikaBrushCoreClass
{
PikaPaintCoreClass parent_class;
/* Set for tools that don't mind if the brush changes while painting */
gboolean handles_changing_brush;
/* Set for tools that don't mind if the brush scales while painting */
gboolean handles_transforming_brush;
/* Set for tools that don't mind if the brush scales mid stroke */
gboolean handles_dynamic_transforming_brush;
void (* set_brush) (PikaBrushCore *core,
PikaBrush *brush);
void (* set_dynamics) (PikaBrushCore *core,
PikaDynamics *brush);
};
GType pika_brush_core_get_type (void) G_GNUC_CONST;
void pika_brush_core_set_brush (PikaBrushCore *core,
PikaBrush *brush);
void pika_brush_core_set_dynamics (PikaBrushCore *core,
PikaDynamics *dynamics);
void pika_brush_core_paste_canvas (PikaBrushCore *core,
PikaDrawable *drawable,
const PikaCoords *coords,
gdouble brush_opacity,
gdouble image_opacity,
PikaLayerMode paint_mode,
PikaBrushApplicationMode brush_hardness,
gdouble dynamic_hardness,
PikaPaintApplicationMode mode);
void pika_brush_core_replace_canvas (PikaBrushCore *core,
PikaDrawable *drawable,
const PikaCoords *coords,
gdouble brush_opacity,
gdouble image_opacity,
PikaBrushApplicationMode brush_hardness,
gdouble dynamic_hardness,
PikaPaintApplicationMode mode);
void pika_brush_core_color_area_with_pixmap
(PikaBrushCore *core,
PikaDrawable *drawable,
const PikaCoords *coords,
GeglBuffer *area,
gint area_x,
gint area_y,
gboolean apply_mask);
const PikaTempBuf * pika_brush_core_get_brush_mask
(PikaBrushCore *core,
const PikaCoords *coords,
PikaBrushApplicationMode brush_hardness,
gdouble dynamic_hardness);
const PikaTempBuf * pika_brush_core_get_brush_pixmap
(PikaBrushCore *core);
void pika_brush_core_eval_transform_dynamics
(PikaBrushCore *core,
PikaImage *image,
PikaPaintOptions *paint_options,
const PikaCoords *coords);
void pika_brush_core_eval_transform_symmetry
(PikaBrushCore *core,
PikaSymmetry *symmetry,
gint stroke);
#endif /* __PIKA_BRUSH_CORE_H__ */