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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:23:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:23:22 +0000
commite42129241681dde7adae7d20697e7b421682fbb4 (patch)
treeaf1fe815a5e639e68e59fabd8395ec69458b3e5e /app/operations/layer-modes/gimpoperationdissolve.c
parentInitial commit. (diff)
downloadgimp-e42129241681dde7adae7d20697e7b421682fbb4.tar.xz
gimp-e42129241681dde7adae7d20697e7b421682fbb4.zip
Adding upstream version 2.10.22.upstream/2.10.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'app/operations/layer-modes/gimpoperationdissolve.c')
-rw-r--r--app/operations/layer-modes/gimpoperationdissolve.c168
1 files changed, 168 insertions, 0 deletions
diff --git a/app/operations/layer-modes/gimpoperationdissolve.c b/app/operations/layer-modes/gimpoperationdissolve.c
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+++ b/app/operations/layer-modes/gimpoperationdissolve.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpoperationdissolve.c
+ * Copyright (C) 2012 Ville Sokk <ville.sokk@gmail.com>
+ * 2012 Øyvind Kolås <pippin@gimp.org>
+ * 2003 Helvetix Victorinox
+ *
+ * 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 <gegl-plugin.h>
+
+#include "../operations-types.h"
+
+#include "gimpoperationdissolve.h"
+
+
+#define RANDOM_TABLE_SIZE 4096
+
+
+static gboolean gimp_operation_dissolve_process (GeglOperation *op,
+ void *in,
+ void *layer,
+ void *mask,
+ void *out,
+ glong samples,
+ const GeglRectangle *result,
+ gint level);
+static GimpLayerCompositeRegion gimp_operation_dissolve_get_affected_region (GimpOperationLayerMode *layer_mode);
+
+
+G_DEFINE_TYPE (GimpOperationDissolve, gimp_operation_dissolve,
+ GIMP_TYPE_OPERATION_LAYER_MODE)
+
+
+static gint32 random_table[RANDOM_TABLE_SIZE];
+
+
+static void
+gimp_operation_dissolve_class_init (GimpOperationDissolveClass *klass)
+{
+ GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
+ GimpOperationLayerModeClass *layer_mode_class = GIMP_OPERATION_LAYER_MODE_CLASS (klass);
+ GRand *gr;
+ gint i;
+
+ gegl_operation_class_set_keys (operation_class,
+ "name", "gimp:dissolve",
+ "description", "GIMP dissolve mode operation",
+ "categories", "compositors",
+ NULL);
+
+ layer_mode_class->process = gimp_operation_dissolve_process;
+ layer_mode_class->get_affected_region = gimp_operation_dissolve_get_affected_region;
+
+ /* generate a table of random seeds */
+ gr = g_rand_new_with_seed (314159265);
+ for (i = 0; i < RANDOM_TABLE_SIZE; i++)
+ random_table[i] = g_rand_int (gr);
+
+ g_rand_free (gr);
+}
+
+static void
+gimp_operation_dissolve_init (GimpOperationDissolve *self)
+{
+}
+
+static gboolean
+gimp_operation_dissolve_process (GeglOperation *op,
+ void *in_p,
+ void *layer_p,
+ void *mask_p,
+ void *out_p,
+ glong samples,
+ const GeglRectangle *result,
+ gint level)
+{
+ GimpOperationLayerMode *layer_mode = (gpointer) op;
+ gfloat *in = in_p;
+ gfloat *out = out_p;
+ gfloat *layer = layer_p;
+ gfloat *mask = mask_p;
+ gfloat opacity = layer_mode->opacity;
+ const gboolean has_mask = mask != NULL;
+ gint x, y;
+
+ for (y = result->y; y < result->y + result->height; y++)
+ {
+ GRand *gr = g_rand_new_with_seed (random_table[y % RANDOM_TABLE_SIZE]);
+
+ /* fast forward through the rows pseudo random sequence */
+ for (x = 0; x < result->x; x++)
+ g_rand_int (gr);
+
+ for (x = result->x; x < result->x + result->width; x++)
+ {
+ gfloat value = layer[ALPHA] * opacity * 255;
+
+ if (has_mask)
+ value *= *mask;
+
+ if (g_rand_int_range (gr, 0, 255) >= value)
+ {
+ out[0] = in[0];
+ out[1] = in[1];
+ out[2] = in[2];
+
+ if (layer_mode->composite_mode == GIMP_LAYER_COMPOSITE_UNION ||
+ layer_mode->composite_mode == GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP)
+ {
+ out[3] = in[3];
+ }
+ else
+ {
+ out[3] = 0.0f;
+ }
+ }
+ else
+ {
+ out[0] = layer[0];
+ out[1] = layer[1];
+ out[2] = layer[2];
+
+ if (layer_mode->composite_mode == GIMP_LAYER_COMPOSITE_UNION ||
+ layer_mode->composite_mode == GIMP_LAYER_COMPOSITE_CLIP_TO_LAYER)
+ {
+ out[3] = 1.0f;
+ }
+ else
+ {
+ out[3] = in[3];
+ }
+ }
+
+ in += 4;
+ layer += 4;
+ out += 4;
+
+ if (has_mask)
+ mask++;
+ }
+
+ g_rand_free (gr);
+ }
+
+ return TRUE;
+}
+
+static GimpLayerCompositeRegion
+gimp_operation_dissolve_get_affected_region (GimpOperationLayerMode *layer_mode)
+{
+ return GIMP_LAYER_COMPOSITE_REGION_SOURCE;
+}