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-rw-r--r--app/core/gimpdynamicsoutput.c767
1 files changed, 767 insertions, 0 deletions
diff --git a/app/core/gimpdynamicsoutput.c b/app/core/gimpdynamicsoutput.c
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--- /dev/null
+++ b/app/core/gimpdynamicsoutput.c
@@ -0,0 +1,767 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995-1999 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 "libgimpmath/gimpmath.h"
+#include "libgimpconfig/gimpconfig.h"
+
+#include "core-types.h"
+
+#include "paint/gimppaintoptions.h"
+
+
+#include "gimpcurve.h"
+#include "gimpcurve-map.h"
+
+#include "gimpdynamicsoutput.h"
+
+#include "gimp-intl.h"
+
+
+#define DEFAULT_USE_PRESSURE FALSE
+#define DEFAULT_USE_VELOCITY FALSE
+#define DEFAULT_USE_DIRECTION FALSE
+#define DEFAULT_USE_TILT FALSE
+#define DEFAULT_USE_WHEEL FALSE
+#define DEFAULT_USE_RANDOM FALSE
+#define DEFAULT_USE_FADE FALSE
+
+
+enum
+{
+ PROP_0,
+
+ PROP_TYPE,
+ PROP_USE_PRESSURE,
+ PROP_USE_VELOCITY,
+ PROP_USE_DIRECTION,
+ PROP_USE_TILT,
+ PROP_USE_WHEEL,
+ PROP_USE_RANDOM,
+ PROP_USE_FADE,
+ PROP_PRESSURE_CURVE,
+ PROP_VELOCITY_CURVE,
+ PROP_DIRECTION_CURVE,
+ PROP_TILT_CURVE,
+ PROP_WHEEL_CURVE,
+ PROP_RANDOM_CURVE,
+ PROP_FADE_CURVE
+};
+
+
+typedef struct _GimpDynamicsOutputPrivate GimpDynamicsOutputPrivate;
+
+struct _GimpDynamicsOutputPrivate
+{
+ GimpDynamicsOutputType type;
+
+ gboolean use_pressure;
+ gboolean use_velocity;
+ gboolean use_direction;
+ gboolean use_tilt;
+ gboolean use_wheel;
+ gboolean use_random;
+ gboolean use_fade;
+
+ GimpCurve *pressure_curve;
+ GimpCurve *velocity_curve;
+ GimpCurve *direction_curve;
+ GimpCurve *tilt_curve;
+ GimpCurve *wheel_curve;
+ GimpCurve *random_curve;
+ GimpCurve *fade_curve;
+};
+
+#define GET_PRIVATE(output) \
+ ((GimpDynamicsOutputPrivate *) gimp_dynamics_output_get_instance_private ((GimpDynamicsOutput *) (output)))
+
+
+static void gimp_dynamics_output_finalize (GObject *object);
+static void gimp_dynamics_output_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_dynamics_output_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void gimp_dynamics_output_copy_curve (GimpCurve *src,
+ GimpCurve *dest);
+
+static GimpCurve *
+ gimp_dynamics_output_create_curve (GimpDynamicsOutput *output,
+ const gchar *name);
+static void gimp_dynamics_output_curve_dirty (GimpCurve *curve,
+ GimpDynamicsOutput *output);
+
+
+G_DEFINE_TYPE_WITH_CODE (GimpDynamicsOutput, gimp_dynamics_output,
+ GIMP_TYPE_OBJECT,
+ G_ADD_PRIVATE (GimpDynamicsOutput)
+ G_IMPLEMENT_INTERFACE (GIMP_TYPE_CONFIG, NULL))
+
+#define parent_class gimp_dynamics_output_parent_class
+
+
+static void
+gimp_dynamics_output_class_init (GimpDynamicsOutputClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->finalize = gimp_dynamics_output_finalize;
+ object_class->set_property = gimp_dynamics_output_set_property;
+ object_class->get_property = gimp_dynamics_output_get_property;
+
+ g_object_class_install_property (object_class, PROP_TYPE,
+ g_param_spec_enum ("type", NULL,
+ _("Output type"),
+ GIMP_TYPE_DYNAMICS_OUTPUT_TYPE,
+ GIMP_DYNAMICS_OUTPUT_OPACITY,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_USE_PRESSURE,
+ "use-pressure",
+ NULL, NULL,
+ DEFAULT_USE_PRESSURE,
+ GIMP_PARAM_STATIC_STRINGS);
+
+ GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_USE_VELOCITY,
+ "use-velocity",
+ NULL, NULL,
+ DEFAULT_USE_VELOCITY,
+ GIMP_PARAM_STATIC_STRINGS);
+
+ GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_USE_DIRECTION,
+ "use-direction",
+ NULL, NULL,
+ DEFAULT_USE_DIRECTION,
+ GIMP_PARAM_STATIC_STRINGS);
+
+ GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_USE_TILT,
+ "use-tilt",
+ NULL, NULL,
+ DEFAULT_USE_TILT,
+ GIMP_PARAM_STATIC_STRINGS);
+
+ GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_USE_WHEEL,
+ "use-wheel",
+ NULL, NULL,
+ DEFAULT_USE_TILT,
+ GIMP_PARAM_STATIC_STRINGS);
+
+ GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_USE_RANDOM,
+ "use-random",
+ NULL, NULL,
+ DEFAULT_USE_RANDOM,
+ GIMP_PARAM_STATIC_STRINGS);
+
+ GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_USE_FADE,
+ "use-fade",
+ NULL, NULL,
+ DEFAULT_USE_FADE,
+ GIMP_PARAM_STATIC_STRINGS);
+
+ GIMP_CONFIG_PROP_OBJECT (object_class, PROP_PRESSURE_CURVE,
+ "pressure-curve",
+ NULL, NULL,
+ GIMP_TYPE_CURVE,
+ GIMP_CONFIG_PARAM_AGGREGATE);
+
+ GIMP_CONFIG_PROP_OBJECT (object_class, PROP_VELOCITY_CURVE,
+ "velocity-curve",
+ NULL, NULL,
+ GIMP_TYPE_CURVE,
+ GIMP_CONFIG_PARAM_AGGREGATE);
+
+ GIMP_CONFIG_PROP_OBJECT (object_class, PROP_DIRECTION_CURVE,
+ "direction-curve",
+ NULL, NULL,
+ GIMP_TYPE_CURVE,
+ GIMP_CONFIG_PARAM_AGGREGATE);
+
+ GIMP_CONFIG_PROP_OBJECT (object_class, PROP_TILT_CURVE,
+ "tilt-curve",
+ NULL, NULL,
+ GIMP_TYPE_CURVE,
+ GIMP_CONFIG_PARAM_AGGREGATE);
+
+ GIMP_CONFIG_PROP_OBJECT (object_class, PROP_WHEEL_CURVE,
+ "wheel-curve",
+ NULL, NULL,
+ GIMP_TYPE_CURVE,
+ GIMP_CONFIG_PARAM_AGGREGATE);
+
+ GIMP_CONFIG_PROP_OBJECT (object_class, PROP_RANDOM_CURVE,
+ "random-curve",
+ NULL, NULL,
+ GIMP_TYPE_CURVE,
+ GIMP_CONFIG_PARAM_AGGREGATE);
+
+ GIMP_CONFIG_PROP_OBJECT (object_class, PROP_FADE_CURVE,
+ "fade-curve",
+ NULL, NULL,
+ GIMP_TYPE_CURVE,
+ GIMP_CONFIG_PARAM_AGGREGATE);
+}
+
+static void
+gimp_dynamics_output_init (GimpDynamicsOutput *output)
+{
+ GimpDynamicsOutputPrivate *private = GET_PRIVATE (output);
+
+ private->pressure_curve = gimp_dynamics_output_create_curve (output,
+ "pressure-curve");
+ private->velocity_curve = gimp_dynamics_output_create_curve (output,
+ "velocity-curve");
+ private->direction_curve = gimp_dynamics_output_create_curve (output,
+ "direction-curve");
+ private->tilt_curve = gimp_dynamics_output_create_curve (output,
+ "tilt-curve");
+ private->wheel_curve = gimp_dynamics_output_create_curve (output,
+ "wheel-curve");
+ private->random_curve = gimp_dynamics_output_create_curve (output,
+ "random-curve");
+ private->fade_curve = gimp_dynamics_output_create_curve (output,
+ "fade-curve");
+}
+
+static void
+gimp_dynamics_output_finalize (GObject *object)
+{
+ GimpDynamicsOutputPrivate *private = GET_PRIVATE (object);
+
+ g_clear_object (&private->pressure_curve);
+ g_clear_object (&private->velocity_curve);
+ g_clear_object (&private->direction_curve);
+ g_clear_object (&private->tilt_curve);
+ g_clear_object (&private->wheel_curve);
+ g_clear_object (&private->random_curve);
+ g_clear_object (&private->fade_curve);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_dynamics_output_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpDynamicsOutputPrivate *private = GET_PRIVATE (object);
+
+ switch (property_id)
+ {
+ case PROP_TYPE:
+ private->type = g_value_get_enum (value);
+ break;
+
+ case PROP_USE_PRESSURE:
+ private->use_pressure = g_value_get_boolean (value);
+ break;
+
+ case PROP_USE_VELOCITY:
+ private->use_velocity = g_value_get_boolean (value);
+ break;
+
+ case PROP_USE_DIRECTION:
+ private->use_direction = g_value_get_boolean (value);
+ break;
+
+ case PROP_USE_TILT:
+ private->use_tilt = g_value_get_boolean (value);
+ break;
+
+ case PROP_USE_WHEEL:
+ private->use_wheel = g_value_get_boolean (value);
+ break;
+
+ case PROP_USE_RANDOM:
+ private->use_random = g_value_get_boolean (value);
+ break;
+
+ case PROP_USE_FADE:
+ private->use_fade = g_value_get_boolean (value);
+ break;
+
+ case PROP_PRESSURE_CURVE:
+ gimp_dynamics_output_copy_curve (g_value_get_object (value),
+ private->pressure_curve);
+ break;
+
+ case PROP_VELOCITY_CURVE:
+ gimp_dynamics_output_copy_curve (g_value_get_object (value),
+ private->velocity_curve);
+ break;
+
+ case PROP_DIRECTION_CURVE:
+ gimp_dynamics_output_copy_curve (g_value_get_object (value),
+ private->direction_curve);
+ break;
+
+ case PROP_TILT_CURVE:
+ gimp_dynamics_output_copy_curve (g_value_get_object (value),
+ private->tilt_curve);
+ break;
+
+ case PROP_WHEEL_CURVE:
+ gimp_dynamics_output_copy_curve (g_value_get_object (value),
+ private->wheel_curve);
+ break;
+
+ case PROP_RANDOM_CURVE:
+ gimp_dynamics_output_copy_curve (g_value_get_object (value),
+ private->random_curve);
+ break;
+
+ case PROP_FADE_CURVE:
+ gimp_dynamics_output_copy_curve (g_value_get_object (value),
+ private->fade_curve);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_dynamics_output_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpDynamicsOutputPrivate *private = GET_PRIVATE (object);
+
+ switch (property_id)
+ {
+ case PROP_TYPE:
+ g_value_set_enum (value, private->type);
+ break;
+
+ case PROP_USE_PRESSURE:
+ g_value_set_boolean (value, private->use_pressure);
+ break;
+
+ case PROP_USE_VELOCITY:
+ g_value_set_boolean (value, private->use_velocity);
+ break;
+
+ case PROP_USE_DIRECTION:
+ g_value_set_boolean (value, private->use_direction);
+ break;
+
+ case PROP_USE_TILT:
+ g_value_set_boolean (value, private->use_tilt);
+ break;
+
+ case PROP_USE_WHEEL:
+ g_value_set_boolean (value, private->use_wheel);
+ break;
+
+ case PROP_USE_RANDOM:
+ g_value_set_boolean (value, private->use_random);
+ break;
+
+ case PROP_USE_FADE:
+ g_value_set_boolean (value, private->use_fade);
+ break;
+
+ case PROP_PRESSURE_CURVE:
+ g_value_set_object (value, private->pressure_curve);
+ break;
+
+ case PROP_VELOCITY_CURVE:
+ g_value_set_object (value, private->velocity_curve);
+ break;
+
+ case PROP_DIRECTION_CURVE:
+ g_value_set_object (value, private->direction_curve);
+ break;
+
+ case PROP_TILT_CURVE:
+ g_value_set_object (value, private->tilt_curve);
+ break;
+
+ case PROP_WHEEL_CURVE:
+ g_value_set_object (value, private->wheel_curve);
+ break;
+
+ case PROP_RANDOM_CURVE:
+ g_value_set_object (value, private->random_curve);
+ break;
+
+ case PROP_FADE_CURVE:
+ g_value_set_object (value, private->fade_curve);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+
+/* public functions */
+
+GimpDynamicsOutput *
+gimp_dynamics_output_new (const gchar *name,
+ GimpDynamicsOutputType type)
+{
+ g_return_val_if_fail (name != NULL, NULL);
+
+ return g_object_new (GIMP_TYPE_DYNAMICS_OUTPUT,
+ "name", name,
+ "type", type,
+ NULL);
+}
+
+gboolean
+gimp_dynamics_output_is_enabled (GimpDynamicsOutput *output)
+{
+ GimpDynamicsOutputPrivate *private = GET_PRIVATE (output);
+
+ return (private->use_pressure ||
+ private->use_velocity ||
+ private->use_direction ||
+ private->use_tilt ||
+ private->use_wheel ||
+ private->use_random ||
+ private->use_fade);
+}
+
+gdouble
+gimp_dynamics_output_get_linear_value (GimpDynamicsOutput *output,
+ const GimpCoords *coords,
+ GimpPaintOptions *options,
+ gdouble fade_point)
+{
+ GimpDynamicsOutputPrivate *private = GET_PRIVATE (output);
+ gdouble total = 0.0;
+ gdouble result = 1.0;
+ gint factors = 0;
+
+ if (private->use_pressure)
+ {
+ total += gimp_curve_map_value (private->pressure_curve,
+ coords->pressure);
+ factors++;
+ }
+
+ if (private->use_velocity)
+ {
+ total += gimp_curve_map_value (private->velocity_curve,
+ (1.0 - coords->velocity));
+ factors++;
+ }
+
+ if (private->use_direction)
+ {
+ total += gimp_curve_map_value (private->direction_curve,
+ fmod (coords->direction + 0.5, 1));
+ factors++;
+ }
+
+ if (private->use_tilt)
+ {
+ total += gimp_curve_map_value (private->tilt_curve,
+ (1.0 - sqrt (SQR (coords->xtilt) +
+ SQR (coords->ytilt))));
+ factors++;
+ }
+
+ if (private->use_wheel)
+ {
+ gdouble wheel;
+
+ wheel = coords->wheel;
+
+ total += gimp_curve_map_value (private->wheel_curve, wheel);
+ factors++;
+ }
+
+ if (private->use_random)
+ {
+ total += gimp_curve_map_value (private->random_curve,
+ g_random_double_range (0.0, 1.0));
+ factors++;
+ }
+
+ if (private->use_fade)
+ {
+ total += gimp_curve_map_value (private->fade_curve, fade_point);
+
+ factors++;
+ }
+
+ if (factors > 0)
+ result = total / factors;
+
+#if 0
+ g_printerr ("Dynamics queried(linear). Result: %f, factors: %d, total: %f\n",
+ result, factors, total);
+#endif
+
+ return result;
+}
+
+gdouble
+gimp_dynamics_output_get_angular_value (GimpDynamicsOutput *output,
+ const GimpCoords *coords,
+ GimpPaintOptions *options,
+ gdouble fade_point)
+{
+ GimpDynamicsOutputPrivate *private = GET_PRIVATE (output);
+ gdouble total = 0.0;
+ gdouble result = 0.0; /* angles are additive, so we return zero for no change. */
+ gint factors = 0;
+
+ if (private->use_pressure)
+ {
+ total += gimp_curve_map_value (private->pressure_curve,
+ coords->pressure);
+ factors++;
+ }
+
+ if (private->use_velocity)
+ {
+ total += gimp_curve_map_value (private->velocity_curve,
+ (1.0 - coords->velocity));
+ factors++;
+ }
+
+ if (private->use_direction)
+ {
+ gdouble angle = gimp_curve_map_value (private->direction_curve,
+ coords->direction);
+
+ if (options->brush_lock_to_view)
+ {
+ if (coords->reflect)
+ angle = 0.5 - angle;
+
+ angle -= coords->angle;
+ angle = fmod (fmod (angle, 1.0) + 1.0, 1.0);
+ }
+
+ total += angle;
+ factors++;
+ }
+
+ /* For tilt to make sense, it needs to be converted to an angle, not
+ * just a vector
+ */
+ if (private->use_tilt)
+ {
+ gdouble tilt_x = coords->xtilt;
+ gdouble tilt_y = coords->ytilt;
+ gdouble tilt = 0.0;
+
+ if (tilt_x == 0.0)
+ {
+ if (tilt_y > 0.0)
+ tilt = 0.25;
+ else if (tilt_y < 0.0)
+ tilt = 0.75;
+ else
+ tilt = 0.0;
+ }
+ else
+ {
+ tilt = atan ((- 1.0 * tilt_y) /
+ tilt_x) / (2 * G_PI);
+
+ if (tilt_x > 0.0)
+ tilt = tilt + 0.5;
+ }
+
+ tilt = tilt + 0.5; /* correct the angle, its wrong by 180 degrees */
+
+ while (tilt > 1.0)
+ tilt -= 1.0;
+
+ while (tilt < 0.0)
+ tilt += 1.0;
+
+ total += gimp_curve_map_value (private->tilt_curve, tilt);
+ factors++;
+ }
+
+ if (private->use_wheel)
+ {
+ gdouble angle = 1.0 - fmod(0.5 + coords->wheel, 1);
+
+ total += gimp_curve_map_value (private->wheel_curve, angle);
+ factors++;
+ }
+
+ if (private->use_random)
+ {
+ total += gimp_curve_map_value (private->random_curve,
+ g_random_double_range (0.0, 1.0));
+ factors++;
+ }
+
+ if (private->use_fade)
+ {
+ total += gimp_curve_map_value (private->fade_curve, fade_point);
+
+ factors++;
+ }
+
+ if (factors > 0)
+ result = total / factors;
+
+#if 0
+ g_printerr ("Dynamics queried(angle). Result: %f, factors: %d, total: %f\n",
+ result, factors, total);
+#endif
+
+ return result;
+}
+
+gdouble
+gimp_dynamics_output_get_aspect_value (GimpDynamicsOutput *output,
+ const GimpCoords *coords,
+ GimpPaintOptions *options,
+ gdouble fade_point)
+{
+ GimpDynamicsOutputPrivate *private = GET_PRIVATE (output);
+ gdouble total = 0.0;
+ gint factors = 0;
+ gdouble sign = 1.0;
+ gdouble result = 1.0;
+
+ if (private->use_pressure)
+ {
+ total += gimp_curve_map_value (private->pressure_curve,
+ coords->pressure);
+ factors++;
+ }
+
+ if (private->use_velocity)
+ {
+ total += gimp_curve_map_value (private->velocity_curve,
+ coords->velocity);
+ factors++;
+ }
+
+ if (private->use_direction)
+ {
+ gdouble direction = gimp_curve_map_value (private->direction_curve,
+ coords->direction);
+
+ if (((direction > 0.875) && (direction <= 1.0)) ||
+ ((direction > 0.0) && (direction < 0.125)) ||
+ ((direction > 0.375) && (direction < 0.625)))
+ sign = -1.0;
+
+ total += 1.0;
+ factors++;
+ }
+
+ if (private->use_tilt)
+ {
+ gdouble tilt_value = MAX (fabs (coords->xtilt), fabs (coords->ytilt));
+
+ tilt_value = gimp_curve_map_value (private->tilt_curve,
+ tilt_value);
+
+ total += tilt_value;
+
+ factors++;
+ }
+
+ if (private->use_wheel)
+ {
+ gdouble wheel = gimp_curve_map_value (private->wheel_curve,
+ coords->wheel);
+
+ if (((wheel > 0.875) && (wheel <= 1.0)) ||
+ ((wheel > 0.0) && (wheel < 0.125)) ||
+ ((wheel > 0.375) && (wheel < 0.625)))
+ sign = -1.0;
+
+ total += 1.0;
+ factors++;
+
+ }
+
+ if (private->use_random)
+ {
+ gdouble random = gimp_curve_map_value (private->random_curve,
+ g_random_double_range (0.0, 1.0));
+
+ total += random;
+ factors++;
+ }
+
+ if (private->use_fade)
+ {
+ total += gimp_curve_map_value (private->fade_curve, fade_point);
+
+ factors++;
+ }
+
+ if (factors > 0)
+ result = total / factors;
+
+
+#if 0
+ g_printerr ("Dynamics queried(aspect). Result: %f, factors: %d, total: %f sign: %f\n",
+ result, factors, total, sign);
+#endif
+ result = CLAMP (result * sign, -1.0, 1.0);
+
+ return result;
+}
+
+static void
+gimp_dynamics_output_copy_curve (GimpCurve *src,
+ GimpCurve *dest)
+{
+ if (src && dest)
+ {
+ gimp_config_copy (GIMP_CONFIG (src),
+ GIMP_CONFIG (dest),
+ GIMP_CONFIG_PARAM_SERIALIZE);
+ }
+}
+
+static GimpCurve *
+gimp_dynamics_output_create_curve (GimpDynamicsOutput *output,
+ const gchar *name)
+{
+ GimpCurve *curve = GIMP_CURVE (gimp_curve_new (name));
+
+ g_signal_connect_object (curve, "dirty",
+ G_CALLBACK (gimp_dynamics_output_curve_dirty),
+ output, 0);
+
+ return curve;
+}
+
+static void
+gimp_dynamics_output_curve_dirty (GimpCurve *curve,
+ GimpDynamicsOutput *output)
+{
+ g_object_notify (G_OBJECT (output), gimp_object_get_name (curve));
+}
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