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-rw-r--r--app/core/gimpbrushgenerated.c875
1 files changed, 875 insertions, 0 deletions
diff --git a/app/core/gimpbrushgenerated.c b/app/core/gimpbrushgenerated.c
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+++ b/app/core/gimpbrushgenerated.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimp_brush_generated module Copyright 1998 Jay Cox <jaycox@earthlink.net>
+ *
+ * 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 "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+
+#include "core-types.h"
+
+#include "gimpbrush-private.h"
+#include "gimpbrushgenerated.h"
+#include "gimpbrushgenerated-load.h"
+#include "gimpbrushgenerated-save.h"
+#include "gimptempbuf.h"
+
+#include "gimp-intl.h"
+
+
+#define OVERSAMPLING 4
+
+
+enum
+{
+ PROP_0,
+ PROP_SHAPE,
+ PROP_RADIUS,
+ PROP_SPIKES,
+ PROP_HARDNESS,
+ PROP_ASPECT_RATIO,
+ PROP_ANGLE
+};
+
+
+/* local function prototypes */
+
+static void gimp_brush_generated_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_brush_generated_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static void gimp_brush_generated_dirty (GimpData *data);
+static const gchar * gimp_brush_generated_get_extension (GimpData *data);
+static void gimp_brush_generated_copy (GimpData *data,
+ GimpData *src_data);
+
+static void gimp_brush_generated_transform_size(GimpBrush *gbrush,
+ gdouble scale,
+ gdouble aspect_ratio,
+ gdouble angle,
+ gboolean reflect,
+ gint *width,
+ gint *height);
+static GimpTempBuf * gimp_brush_generated_transform_mask(GimpBrush *gbrush,
+ gdouble scale,
+ gdouble aspect_ratio,
+ gdouble angle,
+ gboolean reflect,
+ gdouble hardness);
+
+static GimpTempBuf * gimp_brush_generated_calc (GimpBrushGenerated *brush,
+ GimpBrushGeneratedShape shape,
+ gfloat radius,
+ gint spikes,
+ gfloat hardness,
+ gfloat aspect_ratio,
+ gfloat angle,
+ gboolean reflect,
+ GimpVector2 *xaxis,
+ GimpVector2 *yaxis);
+static void gimp_brush_generated_get_size (GimpBrushGenerated *gbrush,
+ GimpBrushGeneratedShape shape,
+ gfloat radius,
+ gint spikes,
+ gfloat hardness,
+ gfloat aspect_ratio,
+ gdouble angle_in_degrees,
+ gboolean reflect,
+ gint *width,
+ gint *height,
+ gdouble *_s,
+ gdouble *_c,
+ GimpVector2 *_x_axis,
+ GimpVector2 *_y_axis);
+
+
+G_DEFINE_TYPE (GimpBrushGenerated, gimp_brush_generated, GIMP_TYPE_BRUSH)
+
+#define parent_class gimp_brush_generated_parent_class
+
+
+static void
+gimp_brush_generated_class_init (GimpBrushGeneratedClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GimpDataClass *data_class = GIMP_DATA_CLASS (klass);
+ GimpBrushClass *brush_class = GIMP_BRUSH_CLASS (klass);
+
+ object_class->set_property = gimp_brush_generated_set_property;
+ object_class->get_property = gimp_brush_generated_get_property;
+
+ data_class->save = gimp_brush_generated_save;
+ data_class->dirty = gimp_brush_generated_dirty;
+ data_class->get_extension = gimp_brush_generated_get_extension;
+ data_class->copy = gimp_brush_generated_copy;
+
+ brush_class->transform_size = gimp_brush_generated_transform_size;
+ brush_class->transform_mask = gimp_brush_generated_transform_mask;
+
+ g_object_class_install_property (object_class, PROP_SHAPE,
+ g_param_spec_enum ("shape", NULL,
+ _("Brush Shape"),
+ GIMP_TYPE_BRUSH_GENERATED_SHAPE,
+ GIMP_BRUSH_GENERATED_CIRCLE,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ g_object_class_install_property (object_class, PROP_RADIUS,
+ g_param_spec_double ("radius", NULL,
+ _("Brush Radius"),
+ 0.1, 4000.0, 5.0,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ g_object_class_install_property (object_class, PROP_SPIKES,
+ g_param_spec_int ("spikes", NULL,
+ _("Brush Spikes"),
+ 2, 20, 2,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ g_object_class_install_property (object_class, PROP_HARDNESS,
+ g_param_spec_double ("hardness", NULL,
+ _("Brush Hardness"),
+ 0.0, 1.0, 0.0,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ g_object_class_install_property (object_class, PROP_ASPECT_RATIO,
+ g_param_spec_double ("aspect-ratio",
+ NULL,
+ _("Brush Aspect Ratio"),
+ 1.0, 20.0, 1.0,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ g_object_class_install_property (object_class, PROP_ANGLE,
+ g_param_spec_double ("angle", NULL,
+ _("Brush Angle"),
+ 0.0, 180.0, 0.0,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+}
+
+static void
+gimp_brush_generated_init (GimpBrushGenerated *brush)
+{
+ brush->shape = GIMP_BRUSH_GENERATED_CIRCLE;
+ brush->radius = 5.0;
+ brush->hardness = 0.0;
+ brush->aspect_ratio = 1.0;
+ brush->angle = 0.0;
+}
+
+static void
+gimp_brush_generated_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (object);
+
+ switch (property_id)
+ {
+ case PROP_SHAPE:
+ gimp_brush_generated_set_shape (brush, g_value_get_enum (value));
+ break;
+ case PROP_RADIUS:
+ gimp_brush_generated_set_radius (brush, g_value_get_double (value));
+ break;
+ case PROP_SPIKES:
+ gimp_brush_generated_set_spikes (brush, g_value_get_int (value));
+ break;
+ case PROP_HARDNESS:
+ gimp_brush_generated_set_hardness (brush, g_value_get_double (value));
+ break;
+ case PROP_ASPECT_RATIO:
+ gimp_brush_generated_set_aspect_ratio (brush, g_value_get_double (value));
+ break;
+ case PROP_ANGLE:
+ gimp_brush_generated_set_angle (brush, g_value_get_double (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_brush_generated_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (object);
+
+ switch (property_id)
+ {
+ case PROP_SHAPE:
+ g_value_set_enum (value, brush->shape);
+ break;
+ case PROP_RADIUS:
+ g_value_set_double (value, brush->radius);
+ break;
+ case PROP_SPIKES:
+ g_value_set_int (value, brush->spikes);
+ break;
+ case PROP_HARDNESS:
+ g_value_set_double (value, brush->hardness);
+ break;
+ case PROP_ASPECT_RATIO:
+ g_value_set_double (value, brush->aspect_ratio);
+ break;
+ case PROP_ANGLE:
+ g_value_set_double (value, brush->angle);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_brush_generated_dirty (GimpData *data)
+{
+ GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (data);
+ GimpBrush *gbrush = GIMP_BRUSH (brush);
+
+ g_clear_pointer (&gbrush->priv->mask, gimp_temp_buf_unref);
+
+ gbrush->priv->mask = gimp_brush_generated_calc (brush,
+ brush->shape,
+ brush->radius,
+ brush->spikes,
+ brush->hardness,
+ brush->aspect_ratio,
+ brush->angle,
+ FALSE,
+ &gbrush->priv->x_axis,
+ &gbrush->priv->y_axis);
+
+ GIMP_DATA_CLASS (parent_class)->dirty (data);
+}
+
+static const gchar *
+gimp_brush_generated_get_extension (GimpData *data)
+{
+ return GIMP_BRUSH_GENERATED_FILE_EXTENSION;
+}
+
+static void
+gimp_brush_generated_copy (GimpData *data,
+ GimpData *src_data)
+{
+ GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (data);
+ GimpBrushGenerated *src_brush = GIMP_BRUSH_GENERATED (src_data);
+
+ gimp_data_freeze (data);
+
+ gimp_brush_set_spacing (GIMP_BRUSH (brush),
+ gimp_brush_get_spacing (GIMP_BRUSH (src_brush)));
+
+ brush->shape = src_brush->shape;
+ brush->radius = src_brush->radius;
+ brush->spikes = src_brush->spikes;
+ brush->hardness = src_brush->hardness;
+ brush->aspect_ratio = src_brush->aspect_ratio;
+ brush->angle = src_brush->angle;
+
+ gimp_data_thaw (data);
+}
+
+static void
+gimp_brush_generated_transform_size (GimpBrush *gbrush,
+ gdouble scale,
+ gdouble aspect_ratio,
+ gdouble angle,
+ gboolean reflect,
+ gint *width,
+ gint *height)
+{
+ GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (gbrush);
+ gdouble ratio;
+
+ ratio = fabs (aspect_ratio) * 19.0 / 20.0 + 1.0;
+ ratio = MIN (ratio, 20);
+
+ /* Since generated brushes are symmetric they don't have aspect
+ * ratios < 1.0. it's the same as rotating by 90 degrees and 1 /
+ * ratio, so we fix the input for this case.
+ */
+ if (aspect_ratio < 0.0)
+ angle = angle + 0.25;
+
+ angle = fmod (fmod (angle, 1.0) + 1.0, 1.0);
+ angle *= 360;
+
+ gimp_brush_generated_get_size (brush,
+ brush->shape,
+ brush->radius * scale,
+ brush->spikes,
+ brush->hardness,
+ ratio,
+ angle,
+ reflect,
+ width, height,
+ NULL, NULL, NULL, NULL);
+}
+
+static GimpTempBuf *
+gimp_brush_generated_transform_mask (GimpBrush *gbrush,
+ gdouble scale,
+ gdouble aspect_ratio,
+ gdouble angle,
+ gboolean reflect,
+ gdouble hardness)
+{
+ GimpBrushGenerated *brush = GIMP_BRUSH_GENERATED (gbrush);
+ gdouble ratio;
+
+ ratio = fabs (aspect_ratio) * 19.0 / 20.0 + 1.0;
+ ratio = MIN (ratio, 20);
+
+ /* Since generated brushes are symmetric they don't have aspect
+ * ratios < 1.0. it's the same as rotating by 90 degrees and 1 /
+ * ratio, so we fix the input for this case.
+ */
+ if (aspect_ratio < 0.0)
+ angle = angle + 0.25;
+
+ angle = fmod (fmod (angle, 1.0) + 1.0, 1.0);
+ angle *= 360;
+
+ if (scale == 1.0 &&
+ ratio == brush->aspect_ratio &&
+ angle == brush->angle &&
+ reflect == FALSE &&
+ hardness == brush->hardness)
+ {
+ return gimp_temp_buf_copy (gimp_brush_get_mask (gbrush));
+ }
+
+ return gimp_brush_generated_calc (brush,
+ brush->shape,
+ brush->radius * scale,
+ brush->spikes,
+ hardness,
+ ratio,
+ angle,
+ reflect,
+ NULL, NULL);
+}
+
+
+/* the actual brush rendering functions */
+
+static gdouble
+gauss (gdouble f)
+{
+ /* this aint' a real gauss function */
+ if (f < -0.5)
+ {
+ f = -1.0 - f;
+ return (2.0 * f*f);
+ }
+
+ if (f < 0.5)
+ return (1.0 - 2.0 * f*f);
+
+ f = 1.0 - f;
+ return (2.0 * f*f);
+}
+
+/* set up lookup table */
+static gfloat *
+gimp_brush_generated_calc_lut (gdouble radius,
+ gdouble hardness)
+{
+ gfloat *lookup;
+ gint length;
+ gint x;
+ gdouble d;
+ gdouble sum;
+ gdouble exponent;
+ gdouble buffer[OVERSAMPLING];
+
+ length = OVERSAMPLING * ceil (1 + sqrt (2 * SQR (ceil (radius + 1.0))));
+
+ lookup = gegl_scratch_new (gfloat, length);
+ sum = 0.0;
+
+ if ((1.0 - hardness) < 0.0000004)
+ exponent = 1000000.0;
+ else
+ exponent = 0.4 / (1.0 - hardness);
+
+ for (x = 0; x < OVERSAMPLING; x++)
+ {
+ d = fabs ((x + 0.5) / OVERSAMPLING - 0.5);
+
+ if (d > radius)
+ buffer[x] = 0.0;
+ else
+ buffer[x] = gauss (pow (d / radius, exponent));
+
+ sum += buffer[x];
+ }
+
+ for (x = 0; d < radius || sum > 0.00001; d += 1.0 / OVERSAMPLING)
+ {
+ sum -= buffer[x % OVERSAMPLING];
+
+ if (d > radius)
+ buffer[x % OVERSAMPLING] = 0.0;
+ else
+ buffer[x % OVERSAMPLING] = gauss (pow (d / radius, exponent));
+
+ sum += buffer[x % OVERSAMPLING];
+ lookup[x++] = sum / OVERSAMPLING;
+ }
+
+ while (x < length)
+ {
+ lookup[x++] = 0.0f;
+ }
+
+ return lookup;
+}
+
+static GimpTempBuf *
+gimp_brush_generated_calc (GimpBrushGenerated *brush,
+ GimpBrushGeneratedShape shape,
+ gfloat radius,
+ gint spikes,
+ gfloat hardness,
+ gfloat aspect_ratio,
+ gfloat angle,
+ gboolean reflect,
+ GimpVector2 *xaxis,
+ GimpVector2 *yaxis)
+{
+ gfloat *centerp;
+ gfloat *lookup;
+ gfloat a;
+ gint x, y;
+ gdouble c, s, cs, ss;
+ GimpVector2 x_axis;
+ GimpVector2 y_axis;
+ GimpTempBuf *mask;
+ gint width;
+ gint height;
+ gint half_width;
+ gint half_height;
+
+ gimp_brush_generated_get_size (brush,
+ shape,
+ radius,
+ spikes,
+ hardness,
+ aspect_ratio,
+ angle,
+ reflect,
+ &width, &height,
+ &s, &c, &x_axis, &y_axis);
+
+ mask = gimp_temp_buf_new (width, height,
+ babl_format ("Y float"));
+
+ half_width = width / 2;
+ half_height = height / 2;
+
+ centerp = (gfloat *) gimp_temp_buf_get_data (mask) +
+ half_height * width + half_width;
+
+ lookup = gimp_brush_generated_calc_lut (radius, hardness);
+
+ cs = cos (- 2 * G_PI / spikes);
+ ss = sin (- 2 * G_PI / spikes);
+
+ /* for an even number of spikes compute one half and mirror it */
+ for (y = ((spikes % 2) ? -half_height : 0); y <= half_height; y++)
+ {
+ for (x = -half_width; x <= half_width; x++)
+ {
+ gdouble d = 0;
+ gdouble tx = c * x - s * y;
+ gdouble ty = fabs (s * x + c * y);
+
+ if (spikes > 2)
+ {
+ gdouble angle = atan2 (ty, tx);
+
+ while (angle > G_PI / spikes)
+ {
+ gdouble sx = tx;
+ gdouble sy = ty;
+
+ tx = cs * sx - ss * sy;
+ ty = ss * sx + cs * sy;
+
+ angle -= 2 * G_PI / spikes;
+ }
+ }
+
+ ty *= aspect_ratio;
+
+ switch (shape)
+ {
+ case GIMP_BRUSH_GENERATED_CIRCLE:
+ d = sqrt (SQR (tx) + SQR (ty));
+ break;
+ case GIMP_BRUSH_GENERATED_SQUARE:
+ d = MAX (fabs (tx), fabs (ty));
+ break;
+ case GIMP_BRUSH_GENERATED_DIAMOND:
+ d = fabs (tx) + fabs (ty);
+ break;
+ }
+
+ if (d < radius + 1)
+ a = lookup[(gint) RINT (d * OVERSAMPLING)];
+ else
+ a = 0.0f;
+
+ centerp[y * width + x] = a;
+
+ if (spikes % 2 == 0)
+ centerp[-1 * y * width - x] = a;
+ }
+ }
+
+ gegl_scratch_free (lookup);
+
+ if (xaxis)
+ *xaxis = x_axis;
+
+ if (yaxis)
+ *yaxis = y_axis;
+
+ 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_size (GimpBrushGenerated *gbrush,
+ GimpBrushGeneratedShape shape,
+ gfloat radius,
+ gint spikes,
+ gfloat hardness,
+ gfloat aspect_ratio,
+ gdouble angle_in_degrees,
+ gboolean reflect,
+ gint *width,
+ gint *height,
+ gdouble *_s,
+ gdouble *_c,
+ GimpVector2 *_x_axis,
+ GimpVector2 *_y_axis)
+{
+ gdouble half_width = 0.0;
+ gdouble half_height = 0.0;
+ gint w, h;
+ 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 = RINT (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));
+
+ if (reflect)
+ c = -c;
+
+ 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 = sqrt (x_axis.x * x_axis.x + y_axis.x * y_axis.x);
+ half_height = sqrt (x_axis.y * x_axis.y + y_axis.y * y_axis.y);
+ break;
+
+ case GIMP_BRUSH_GENERATED_SQUARE:
+ half_width = fabs (x_axis.x) + fabs (y_axis.x);
+ half_height = fabs (x_axis.y) + fabs (y_axis.y);
+ break;
+
+ case GIMP_BRUSH_GENERATED_DIAMOND:
+ half_width = MAX (fabs (x_axis.x), fabs (y_axis.x));
+ half_height = MAX (fabs (x_axis.y), fabs (y_axis.y));
+ break;
+ }
+
+ if (spikes > 2)
+ {
+ /* could be optimized by respecting the angle */
+ half_width = half_height = sqrt (radius * radius +
+ short_radius * short_radius);
+ y_axis.x = s * radius;
+ y_axis.y = c * radius;
+ }
+
+ w = MAX (1, ceil (half_width * 2));
+ h = MAX (1, ceil (half_height * 2));
+
+ if (! (w & 0x1)) w++;
+ if (! (h & 0x1)) h++;
+
+ *width = w;
+ *height = h;
+
+ /* 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 (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 (GimpBrushGenerated *brush)
+{
+ g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
+
+ return brush->radius;
+}
+
+gint
+gimp_brush_generated_get_spikes (GimpBrushGenerated *brush)
+{
+ g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1);
+
+ return brush->spikes;
+}
+
+gfloat
+gimp_brush_generated_get_hardness (GimpBrushGenerated *brush)
+{
+ g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
+
+ return brush->hardness;
+}
+
+gfloat
+gimp_brush_generated_get_aspect_ratio (GimpBrushGenerated *brush)
+{
+ g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
+
+ return brush->aspect_ratio;
+}
+
+gfloat
+gimp_brush_generated_get_angle (GimpBrushGenerated *brush)
+{
+ g_return_val_if_fail (GIMP_IS_BRUSH_GENERATED (brush), -1.0);
+
+ return brush->angle;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 19:54:08 +0000