mirror of https://github.com/GNOME/gimp.git
843 lines
27 KiB
C
843 lines
27 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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* gimp_brush_generated module Copyright 1998 Jay Cox <jaycox@earthlink.net>
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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 <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <glib-object.h>
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#include "libgimpbase/gimpbase.h"
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#include "libgimpmath/gimpmath.h"
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#include "core-types.h"
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#include "base/temp-buf.h"
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#include "gimpbrushgenerated.h"
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#include "gimpbrushgenerated-load.h"
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#include "gimpbrushgenerated-save.h"
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#include "gimp-intl.h"
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#define OVERSAMPLING 4
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enum
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{
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PROP_0,
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PROP_SHAPE,
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PROP_RADIUS,
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PROP_SPIKES,
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PROP_HARDNESS,
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PROP_ASPECT_RATIO,
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PROP_ANGLE
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};
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/* local function prototypes */
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static void gimp_brush_generated_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gimp_brush_generated_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static void gimp_brush_generated_dirty (GimpData *data);
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static const gchar * gimp_brush_generated_get_extension (GimpData *data);
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static GimpData * gimp_brush_generated_duplicate (GimpData *data);
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static void gimp_brush_generated_transform_size(GimpBrush *gbrush,
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gdouble scale,
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gdouble aspect_ratio,
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gdouble angle,
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gint *width,
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gint *height);
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static TempBuf * gimp_brush_generated_transform_mask(GimpBrush *gbrush,
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gdouble scale,
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gdouble aspect_ratio,
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gdouble angle,
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gdouble hardness);
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static TempBuf * gimp_brush_generated_calc (GimpBrushGenerated *brush,
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GimpBrushGeneratedShape shape,
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gfloat radius,
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gint spikes,
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gfloat hardness,
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gfloat aspect_ratio,
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gfloat angle,
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GimpVector2 *xaxis,
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GimpVector2 *yaxis);
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static void gimp_brush_generated_get_half_size (GimpBrushGenerated *gbrush,
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GimpBrushGeneratedShape shape,
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gfloat radius,
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gint spikes,
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gfloat hardness,
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gfloat aspect_ratio,
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gdouble angle_in_degrees,
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gint *half_width,
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gint *half_height,
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gdouble *_s,
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gdouble *_c,
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GimpVector2 *_x_axis,
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GimpVector2 *_y_axis);
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G_DEFINE_TYPE (GimpBrushGenerated, gimp_brush_generated, GIMP_TYPE_BRUSH)
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#define parent_class gimp_brush_generated_parent_class
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static void
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gimp_brush_generated_class_init (GimpBrushGeneratedClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GimpDataClass *data_class = GIMP_DATA_CLASS (klass);
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GimpBrushClass *brush_class = GIMP_BRUSH_CLASS (klass);
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object_class->set_property = gimp_brush_generated_set_property;
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object_class->get_property = gimp_brush_generated_get_property;
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data_class->save = gimp_brush_generated_save;
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data_class->dirty = gimp_brush_generated_dirty;
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data_class->get_extension = gimp_brush_generated_get_extension;
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data_class->duplicate = gimp_brush_generated_duplicate;
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brush_class->transform_size = gimp_brush_generated_transform_size;
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brush_class->transform_mask = gimp_brush_generated_transform_mask;
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g_object_class_install_property (object_class, PROP_SHAPE,
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g_param_spec_enum ("shape", NULL,
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_("Brush Shape"),
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GIMP_TYPE_BRUSH_GENERATED_SHAPE,
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GIMP_BRUSH_GENERATED_CIRCLE,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_RADIUS,
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g_param_spec_double ("radius", NULL,
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_("Brush Radius"),
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0.1, 4000.0, 5.0,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_SPIKES,
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g_param_spec_int ("spikes", NULL,
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_("Brush Spikes"),
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2, 20, 2,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_HARDNESS,
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g_param_spec_double ("hardness", NULL,
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_("Brush Hardness"),
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0.0, 1.0, 0.0,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_ASPECT_RATIO,
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g_param_spec_double ("aspect-ratio",
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NULL,
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_("Brush Aspect Ratio"),
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1.0, 20.0, 1.0,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_ANGLE,
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g_param_spec_double ("angle", NULL,
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_("Brush Angle"),
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0.0, 180.0, 0.0,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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}
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static void
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gimp_brush_generated_init (GimpBrushGenerated *brush)
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{
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brush->shape = GIMP_BRUSH_GENERATED_CIRCLE;
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brush->radius = 5.0;
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brush->hardness = 0.0;
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brush->aspect_ratio = 1.0;
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brush->angle = 0.0;
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}
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static void
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gimp_brush_generated_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (object);
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switch (property_id)
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{
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case PROP_SHAPE:
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gimp_brush_generated_set_shape (brush, g_value_get_enum (value));
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break;
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case PROP_RADIUS:
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gimp_brush_generated_set_radius (brush, g_value_get_double (value));
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break;
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case PROP_SPIKES:
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gimp_brush_generated_set_spikes (brush, g_value_get_int (value));
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break;
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case PROP_HARDNESS:
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gimp_brush_generated_set_hardness (brush, g_value_get_double (value));
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break;
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case PROP_ASPECT_RATIO:
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gimp_brush_generated_set_aspect_ratio (brush, g_value_get_double (value));
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break;
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case PROP_ANGLE:
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gimp_brush_generated_set_angle (brush, g_value_get_double (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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gimp_brush_generated_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (object);
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switch (property_id)
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{
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case PROP_SHAPE:
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g_value_set_enum (value, brush->shape);
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break;
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case PROP_RADIUS:
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g_value_set_double (value, brush->radius);
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break;
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case PROP_SPIKES:
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g_value_set_int (value, brush->spikes);
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break;
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case PROP_HARDNESS:
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g_value_set_double (value, brush->hardness);
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break;
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case PROP_ASPECT_RATIO:
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g_value_set_double (value, brush->aspect_ratio);
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break;
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case PROP_ANGLE:
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g_value_set_double (value, brush->angle);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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gimp_brush_generated_dirty (GimpData *data)
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{
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GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (data);
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GimpBrush *gbrush = GIMP_BRUSH (brush);
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if (gbrush->mask)
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temp_buf_free (gbrush->mask);
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gbrush->mask = gimp_brush_generated_calc (brush,
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brush->shape,
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brush->radius,
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brush->spikes,
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brush->hardness,
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brush->aspect_ratio,
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brush->angle,
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&gbrush->x_axis,
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&gbrush->y_axis);
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GIMP_DATA_CLASS (parent_class)->dirty (data);
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}
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static const gchar *
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gimp_brush_generated_get_extension (GimpData *data)
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{
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return GIMP_BRUSH_GENERATED_FILE_EXTENSION;
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}
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static GimpData *
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gimp_brush_generated_duplicate (GimpData *data)
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{
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GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (data);
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return gimp_brush_generated_new (gimp_object_get_name (brush),
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brush->shape,
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brush->radius,
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brush->spikes,
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brush->hardness,
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brush->aspect_ratio,
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brush->angle);
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}
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static void
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gimp_brush_generated_transform_size (GimpBrush *gbrush,
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gdouble scale,
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gdouble aspect_ratio,
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gdouble angle,
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gint *width,
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gint *height)
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{
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GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (gbrush);
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gint half_width;
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gint half_height;
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gdouble ratio;
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if (aspect_ratio == 0.0)
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{
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ratio = brush->aspect_ratio;
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}
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else
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{
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ratio = MIN (fabs (aspect_ratio) + 1, 20);
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/* Since generated brushes are symmetric the dont have input
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* for aspect ratios < 1.0. its same as rotate by 90 degrees and
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* 1 / ratio. So we fix the input up for this case. */
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if (aspect_ratio < 0.0)
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{
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angle = angle + 0.25;
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}
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}
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gimp_brush_generated_get_half_size (brush,
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brush->shape,
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brush->radius * scale,
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brush->spikes,
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brush->hardness,
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ratio,
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(brush->angle + 360 * angle),
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&half_width, &half_height,
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NULL, NULL, NULL, NULL);
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*width = half_width * 2 + 1;
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*height = half_height * 2 + 1;
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}
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static TempBuf *
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gimp_brush_generated_transform_mask (GimpBrush *gbrush,
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gdouble scale,
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gdouble aspect_ratio,
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gdouble angle,
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gdouble hardness)
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{
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GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (gbrush);
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gdouble ratio;
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if (aspect_ratio == 0.0)
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{
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ratio = brush->aspect_ratio;
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}
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else
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{
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ratio = MIN (fabs (aspect_ratio) + 1, 20);
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/* Since generated brushes are symmetric the dont have input
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* for aspect ratios < 1.0. its same as rotate by 90 degrees and
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* 1 / ratio. So we fix the input up for this case. */
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if (aspect_ratio < 0.0)
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{
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angle = angle + 0.25;
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}
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}
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return gimp_brush_generated_calc (brush,
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brush->shape,
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brush->radius * scale,
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brush->spikes,
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brush->hardness * hardness,
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ratio,
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(brush->angle + 360 * angle),
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NULL, NULL);
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}
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/* the actual brush rendering functions */
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static gdouble
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gauss (gdouble f)
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{
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/* this aint' a real gauss function */
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if (f < -0.5)
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{
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f = -1.0 - f;
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return (2.0 * f*f);
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}
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if (f < 0.5)
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return (1.0 - 2.0 * f*f);
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f = 1.0 - f;
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return (2.0 * f*f);
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}
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/* set up lookup table */
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static guchar *
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gimp_brush_generated_calc_lut (gdouble radius,
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gdouble hardness)
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{
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guchar *lookup;
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gint length;
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gint x;
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gdouble d;
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gdouble sum;
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gdouble exponent;
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gdouble buffer[OVERSAMPLING];
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length = OVERSAMPLING * ceil (1 + sqrt (2 * SQR (ceil (radius + 1.0))));
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lookup = g_malloc (length);
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sum = 0.0;
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if ((1.0 - hardness) < 0.0000004)
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exponent = 1000000.0;
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else
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exponent = 0.4 / (1.0 - hardness);
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for (x = 0; x < OVERSAMPLING; x++)
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{
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d = fabs ((x + 0.5) / OVERSAMPLING - 0.5);
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if (d > radius)
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buffer[x] = 0.0;
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else
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buffer[x] = gauss (pow (d / radius, exponent));
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sum += buffer[x];
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}
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for (x = 0; d < radius || sum > 0.00001; d += 1.0 / OVERSAMPLING)
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{
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sum -= buffer[x % OVERSAMPLING];
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if (d > radius)
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buffer[x % OVERSAMPLING] = 0.0;
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else
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buffer[x % OVERSAMPLING] = gauss (pow (d / radius, exponent));
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sum += buffer[x % OVERSAMPLING];
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lookup[x++] = RINT (sum * (255.0 / OVERSAMPLING));
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}
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while (x < length)
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{
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lookup[x++] = 0;
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}
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return lookup;
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}
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static TempBuf *
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gimp_brush_generated_calc (GimpBrushGenerated *brush,
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GimpBrushGeneratedShape shape,
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gfloat radius,
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gint spikes,
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gfloat hardness,
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gfloat aspect_ratio,
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gfloat angle,
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GimpVector2 *xaxis,
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GimpVector2 *yaxis)
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{
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guchar *centerp;
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guchar *lookup;
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guchar a;
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gint half_width = 0;
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gint half_height = 0;
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gint x, y;
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gdouble c, s, cs, ss;
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GimpVector2 x_axis;
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GimpVector2 y_axis;
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TempBuf *mask;
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gimp_brush_generated_get_half_size (brush,
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shape,
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radius,
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spikes,
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hardness,
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aspect_ratio,
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angle,
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&half_width, &half_height,
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&s, &c, &x_axis, &y_axis);
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mask = temp_buf_new (half_width * 2 + 1,
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half_height * 2 + 1,
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1, half_width, half_height, NULL);
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centerp = temp_buf_get_data (mask) + half_height * mask->width + half_width;
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lookup = gimp_brush_generated_calc_lut (radius, hardness);
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cs = cos (- 2 * G_PI / spikes);
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ss = sin (- 2 * G_PI / spikes);
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/* for an even number of spikes compute one half and mirror it */
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for (y = (spikes % 2 ? -half_height : 0); y <= half_height; y++)
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{
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for (x = -half_width; x <= half_width; x++)
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{
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gdouble d = 0;
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gdouble tx = c * x - s * y;
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gdouble ty = fabs (s * x + c * y);
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if (spikes > 2)
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{
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gdouble angle = atan2 (ty, tx);
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while (angle > G_PI / spikes)
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{
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gdouble sx = tx;
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gdouble sy = ty;
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tx = cs * sx - ss * sy;
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ty = ss * sx + cs * sy;
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angle -= 2 * G_PI / spikes;
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}
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}
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ty *= aspect_ratio;
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switch (shape)
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{
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case GIMP_BRUSH_GENERATED_CIRCLE:
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d = sqrt (SQR (tx) + SQR (ty));
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break;
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case GIMP_BRUSH_GENERATED_SQUARE:
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d = MAX (fabs (tx), fabs (ty));
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break;
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case GIMP_BRUSH_GENERATED_DIAMOND:
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d = fabs (tx) + fabs (ty);
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break;
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}
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if (d < radius + 1)
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a = lookup[(gint) RINT (d * OVERSAMPLING)];
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else
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a = 0;
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centerp[y * mask->width + x] = a;
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if (spikes % 2 == 0)
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centerp[-1 * y * mask->width - x] = a;
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}
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}
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g_free (lookup);
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if (xaxis)
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*xaxis = x_axis;
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if (yaxis)
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*yaxis = y_axis;
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|
|
return mask;
|
|
}
|
|
|
|
/* This function is shared between gimp_brush_generated_transform_size and
|
|
* gimp_brush_generated_calc, therefore we provide a bunch of optional
|
|
* pointers for returnvalues.
|
|
*/
|
|
static void
|
|
gimp_brush_generated_get_half_size (GimpBrushGenerated *gbrush,
|
|
GimpBrushGeneratedShape shape,
|
|
gfloat radius,
|
|
gint spikes,
|
|
gfloat hardness,
|
|
gfloat aspect_ratio,
|
|
gdouble angle_in_degrees,
|
|
gint *half_width,
|
|
gint *half_height,
|
|
gdouble *_s,
|
|
gdouble *_c,
|
|
GimpVector2 *_x_axis,
|
|
GimpVector2 *_y_axis)
|
|
{
|
|
gdouble c, s;
|
|
gdouble short_radius;
|
|
GimpVector2 x_axis;
|
|
GimpVector2 y_axis;
|
|
|
|
/* Since floatongpoint is not really accurate,
|
|
* we need to round to limit the errors.
|
|
* Errors in some border cases resulted in
|
|
* different height and width reported for
|
|
* the same input value on calling procedure side.
|
|
* This became problem at the rise of dynamics that
|
|
* allows for any angle to turn up.
|
|
**/
|
|
|
|
angle_in_degrees = ROUND (angle_in_degrees * 1000.0) / 1000.0;
|
|
|
|
s = sin (gimp_deg_to_rad (angle_in_degrees));
|
|
c = cos (gimp_deg_to_rad (angle_in_degrees));
|
|
|
|
short_radius = radius / aspect_ratio;
|
|
|
|
x_axis.x = c * radius;
|
|
x_axis.y = -1.0 * s * radius;
|
|
y_axis.x = s * short_radius;
|
|
y_axis.y = c * short_radius;
|
|
|
|
switch (shape)
|
|
{
|
|
case GIMP_BRUSH_GENERATED_CIRCLE:
|
|
*half_width = ceil (sqrt (x_axis.x * x_axis.x + y_axis.x * y_axis.x));
|
|
*half_height = ceil (sqrt (x_axis.y * x_axis.y + y_axis.y * y_axis.y));
|
|
break;
|
|
|
|
case GIMP_BRUSH_GENERATED_SQUARE:
|
|
*half_width = ceil (fabs (x_axis.x) + fabs (y_axis.x));
|
|
*half_height = ceil (fabs (x_axis.y) + fabs (y_axis.y));
|
|
break;
|
|
|
|
case GIMP_BRUSH_GENERATED_DIAMOND:
|
|
*half_width = ceil (MAX (fabs (x_axis.x), fabs (y_axis.x)));
|
|
*half_height = ceil (MAX (fabs (x_axis.y), fabs (y_axis.y)));
|
|
break;
|
|
}
|
|
|
|
if (spikes > 2)
|
|
{
|
|
/* could be optimized by respecting the angle */
|
|
*half_width = *half_height = ceil (sqrt (radius * radius +
|
|
short_radius * short_radius));
|
|
y_axis.x = s * radius;
|
|
y_axis.y = c * radius;
|
|
}
|
|
|
|
/* These will typically be set then this function is called by
|
|
* gimp_brush_generated_calc, which needs the values in its algorithms.
|
|
*/
|
|
if (_s != NULL)
|
|
*_s = s;
|
|
|
|
if (_c != NULL)
|
|
*_c = c;
|
|
|
|
if (_x_axis != NULL)
|
|
*_x_axis = x_axis;
|
|
|
|
if (_y_axis != NULL)
|
|
*_y_axis = y_axis;
|
|
}
|
|
|
|
|
|
/* public functions */
|
|
|
|
GimpData *
|
|
gimp_brush_generated_new (const gchar *name,
|
|
GimpBrushGeneratedShape shape,
|
|
gfloat radius,
|
|
gint spikes,
|
|
gfloat hardness,
|
|
gfloat aspect_ratio,
|
|
gfloat angle)
|
|
{
|
|
GimpBrushGenerated *brush;
|
|
|
|
g_return_val_if_fail (name != NULL, NULL);
|
|
g_return_val_if_fail (*name != '\0', NULL);
|
|
|
|
brush = g_object_new (GIMP_TYPE_BRUSH_GENERATED,
|
|
"name", name,
|
|
"mime-type", "application/x-gimp-brush-generated",
|
|
"spacing", 20.0,
|
|
"shape", shape,
|
|
"radius", radius,
|
|
"spikes", spikes,
|
|
"hardness", hardness,
|
|
"aspect-ratio", aspect_ratio,
|
|
"angle", angle,
|
|
NULL);
|
|
|
|
return GIMP_DATA (brush);
|
|
}
|
|
|
|
GimpBrushGeneratedShape
|
|
gimp_brush_generated_set_shape (GimpBrushGenerated *brush,
|
|
GimpBrushGeneratedShape shape)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush),
|
|
GIMP_BRUSH_GENERATED_CIRCLE);
|
|
|
|
if (brush->shape != shape)
|
|
{
|
|
brush->shape = shape;
|
|
|
|
g_object_notify (G_OBJECT (brush), "shape");
|
|
gimp_data_dirty (GIMP_DATA (brush));
|
|
}
|
|
|
|
return brush->shape;
|
|
}
|
|
|
|
gfloat
|
|
gimp_brush_generated_set_radius (GimpBrushGenerated *brush,
|
|
gfloat radius)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
|
|
|
|
radius = CLAMP (radius, 0.0, 32767.0);
|
|
|
|
if (brush->radius != radius)
|
|
{
|
|
brush->radius = radius;
|
|
|
|
g_object_notify (G_OBJECT (brush), "radius");
|
|
gimp_data_dirty (GIMP_DATA (brush));
|
|
}
|
|
|
|
return brush->radius;
|
|
}
|
|
|
|
gint
|
|
gimp_brush_generated_set_spikes (GimpBrushGenerated *brush,
|
|
gint spikes)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1);
|
|
|
|
spikes = CLAMP (spikes, 2, 20);
|
|
|
|
if (brush->spikes != spikes)
|
|
{
|
|
brush->spikes = spikes;
|
|
|
|
g_object_notify (G_OBJECT (brush), "spikes");
|
|
gimp_data_dirty (GIMP_DATA (brush));
|
|
}
|
|
|
|
return brush->spikes;
|
|
}
|
|
|
|
gfloat
|
|
gimp_brush_generated_set_hardness (GimpBrushGenerated *brush,
|
|
gfloat hardness)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
|
|
|
|
hardness = CLAMP (hardness, 0.0, 1.0);
|
|
|
|
if (brush->hardness != hardness)
|
|
{
|
|
brush->hardness = hardness;
|
|
|
|
g_object_notify (G_OBJECT (brush), "hardness");
|
|
gimp_data_dirty (GIMP_DATA (brush));
|
|
}
|
|
|
|
return brush->hardness;
|
|
}
|
|
|
|
gfloat
|
|
gimp_brush_generated_set_aspect_ratio (GimpBrushGenerated *brush,
|
|
gfloat ratio)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
|
|
|
|
ratio = CLAMP (ratio, 1.0, 1000.0);
|
|
|
|
if (brush->aspect_ratio != ratio)
|
|
{
|
|
brush->aspect_ratio = ratio;
|
|
|
|
g_object_notify (G_OBJECT (brush), "aspect-ratio");
|
|
gimp_data_dirty (GIMP_DATA (brush));
|
|
}
|
|
|
|
return brush->aspect_ratio;
|
|
}
|
|
|
|
gfloat
|
|
gimp_brush_generated_set_angle (GimpBrushGenerated *brush,
|
|
gfloat angle)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
|
|
|
|
if (angle < 0.0)
|
|
angle = -1.0 * fmod (angle, 180.0);
|
|
else if (angle > 180.0)
|
|
angle = fmod (angle, 180.0);
|
|
|
|
if (brush->angle != angle)
|
|
{
|
|
brush->angle = angle;
|
|
|
|
g_object_notify (G_OBJECT (brush), "angle");
|
|
gimp_data_dirty (GIMP_DATA (brush));
|
|
}
|
|
|
|
return brush->angle;
|
|
}
|
|
|
|
GimpBrushGeneratedShape
|
|
gimp_brush_generated_get_shape (const GimpBrushGenerated *brush)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush),
|
|
GIMP_BRUSH_GENERATED_CIRCLE);
|
|
|
|
return brush->shape;
|
|
}
|
|
|
|
gfloat
|
|
gimp_brush_generated_get_radius (const GimpBrushGenerated *brush)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
|
|
|
|
return brush->radius;
|
|
}
|
|
|
|
gint
|
|
gimp_brush_generated_get_spikes (const GimpBrushGenerated *brush)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1);
|
|
|
|
return brush->spikes;
|
|
}
|
|
|
|
gfloat
|
|
gimp_brush_generated_get_hardness (const GimpBrushGenerated *brush)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
|
|
|
|
return brush->hardness;
|
|
}
|
|
|
|
gfloat
|
|
gimp_brush_generated_get_aspect_ratio (const GimpBrushGenerated *brush)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
|
|
|
|
return brush->aspect_ratio;
|
|
}
|
|
|
|
gfloat
|
|
gimp_brush_generated_get_angle (const GimpBrushGenerated *brush)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
|
|
|
|
return brush->angle;
|
|
}
|