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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 /plug-ins/common/van-gogh-lic.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 'plug-ins/common/van-gogh-lic.c')
-rw-r--r--plug-ins/common/van-gogh-lic.c904
1 files changed, 904 insertions, 0 deletions
diff --git a/plug-ins/common/van-gogh-lic.c b/plug-ins/common/van-gogh-lic.c
new file mode 100644
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+++ b/plug-ins/common/van-gogh-lic.c
@@ -0,0 +1,904 @@
+/* LIC 0.14 -- image filter plug-in for GIMP
+ * Copyright (C) 1996 Tom Bech
+ *
+ * E-mail: tomb@gimp.org
+ * You can contact the original GIMP authors at gimp@xcf.berkeley.edu
+ *
+ * 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/>.
+ *
+ * In other words, you can't sue me for whatever happens while using this ;)
+ *
+ * Changes (post 0.10):
+ * -> 0.11: Fixed a bug in the convolution kernels (Tom).
+ * -> 0.12: Added Quartic's bilinear interpolation stuff (Tom).
+ * -> 0.13 Changed some UI stuff causing trouble with the 0.60 release, added
+ * the (GIMP) tags and changed random() calls to rand() (Tom)
+ * -> 0.14 Ported to 0.99.11 (Tom)
+ *
+ * This plug-in implements the Line Integral Convolution (LIC) as described in
+ * Cabral et al. "Imaging vector fields using line integral convolution" in the
+ * Proceedings of ACM SIGGRAPH 93. Publ. by ACM, New York, NY, USA. p. 263-270.
+ * (See http://www8.cs.umu.se/kurser/TDBD13/VT00/extra/p263-cabral.pdf)
+ *
+ * Some of the code is based on code by Steinar Haugen (thanks!), the Perlin
+ * noise function is practically ripped as is :)
+ */
+
+#include "config.h"
+
+#include <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#include "libgimp/stdplugins-intl.h"
+
+
+/************/
+/* Typedefs */
+/************/
+
+#define numx 40 /* Pseudo-random vector grid size */
+#define numy 40
+
+#define PLUG_IN_PROC "plug-in-lic"
+#define PLUG_IN_BINARY "van-gogh-lic"
+#define PLUG_IN_ROLE "gimp-van-gogh-lic"
+
+typedef enum
+{
+ LIC_HUE,
+ LIC_SATURATION,
+ LIC_BRIGHTNESS
+} LICEffectChannel;
+
+
+/*****************************/
+/* Global variables and such */
+/*****************************/
+
+static gdouble G[numx][numy][2];
+
+typedef struct
+{
+ gdouble filtlen;
+ gdouble noisemag;
+ gdouble intsteps;
+ gdouble minv;
+ gdouble maxv;
+ gint effect_channel;
+ gint effect_operator;
+ gint effect_convolve;
+ gint32 effect_image_id;
+} LicValues;
+
+static LicValues licvals;
+
+static gdouble l = 10.0;
+static gdouble dx = 2.0;
+static gdouble dy = 2.0;
+static gdouble minv = -2.5;
+static gdouble maxv = 2.5;
+static gdouble isteps = 20.0;
+
+static gboolean source_drw_has_alpha = FALSE;
+
+static gint effect_width, effect_height;
+static gint border_x, border_y, border_w, border_h;
+
+static GtkWidget *dialog;
+
+/************************/
+/* Convenience routines */
+/************************/
+
+static void
+peek (GeglBuffer *buffer,
+ gint x,
+ gint y,
+ GimpRGB *color)
+{
+ gegl_buffer_sample (buffer, x, y, NULL,
+ color, babl_format ("R'G'B'A double"),
+ GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
+}
+
+static void
+poke (GeglBuffer *buffer,
+ gint x,
+ gint y,
+ GimpRGB *color)
+{
+ gegl_buffer_set (buffer, GEGL_RECTANGLE (x, y, 1, 1), 0,
+ babl_format ("R'G'B'A double"), color,
+ GEGL_AUTO_ROWSTRIDE);
+}
+
+static gint
+peekmap (const guchar *image,
+ gint x,
+ gint y)
+{
+ while (x < 0)
+ x += effect_width;
+ x %= effect_width;
+
+ while (y < 0)
+ y += effect_height;
+ y %= effect_height;
+
+ return (gint) image[x + effect_width * y];
+}
+
+/*************/
+/* Main part */
+/*************/
+
+/***************************************************/
+/* Compute the derivative in the x and y direction */
+/* We use these convolution kernels: */
+/* |1 0 -1| | 1 2 1| */
+/* DX: |2 0 -2| DY: | 0 0 0| */
+/* |1 0 -1| | -1 -2 -1| */
+/* (It's a variation of the Sobel kernels, really) */
+/***************************************************/
+
+static gint
+gradx (const guchar *image,
+ gint x,
+ gint y)
+{
+ gint val = 0;
+
+ val = val + peekmap (image, x-1, y-1);
+ val = val - peekmap (image, x+1, y-1);
+
+ val = val + 2 * peekmap (image, x-1, y);
+ val = val - 2 * peekmap (image, x+1, y);
+
+ val = val + peekmap (image, x-1, y+1);
+ val = val - peekmap (image, x+1, y+1);
+
+ return val;
+}
+
+static gint
+grady (const guchar *image,
+ gint x,
+ gint y)
+{
+ gint val = 0;
+
+ val = val + peekmap (image, x-1, y-1);
+ val = val + 2 * peekmap (image, x, y-1);
+ val = val + peekmap (image, x+1, y-1);
+
+ val = val - peekmap (image, x-1, y+1);
+ val = val - 2 * peekmap (image, x, y+1);
+ val = val - peekmap (image, x+1, y+1);
+
+ return val;
+}
+
+/************************************/
+/* A nice 2nd order cubic spline :) */
+/************************************/
+
+static gdouble
+cubic (gdouble t)
+{
+ gdouble at = fabs (t);
+
+ return (at < 1.0) ? at * at * (2.0 * at - 3.0) + 1.0 : 0.0;
+}
+
+static gdouble
+omega (gdouble u,
+ gdouble v,
+ gint i,
+ gint j)
+{
+ while (i < 0)
+ i += numx;
+
+ while (j < 0)
+ j += numy;
+
+ i %= numx;
+ j %= numy;
+
+ return cubic (u) * cubic (v) * (G[i][j][0]*u + G[i][j][1]*v);
+}
+
+/*************************************************************/
+/* The noise function (2D variant of Perlins noise function) */
+/*************************************************************/
+
+static gdouble
+noise (gdouble x,
+ gdouble y)
+{
+ gint i, sti = (gint) floor (x / dx);
+ gint j, stj = (gint) floor (y / dy);
+
+ gdouble sum = 0.0;
+
+ /* Calculate the gdouble sum */
+ /* ======================== */
+
+ for (i = sti; i <= sti + 1; i++)
+ for (j = stj; j <= stj + 1; j++)
+ sum += omega ((x - (gdouble) i * dx) / dx,
+ (y - (gdouble) j * dy) / dy,
+ i, j);
+
+ return sum;
+}
+
+/*************************************************/
+/* Generates pseudo-random vectors with length 1 */
+/*************************************************/
+
+static void
+generatevectors (void)
+{
+ gdouble alpha;
+ gint i, j;
+ GRand *gr;
+
+ gr = g_rand_new();
+
+ for (i = 0; i < numx; i++)
+ {
+ for (j = 0; j < numy; j++)
+ {
+ alpha = g_rand_double_range (gr, 0, 2) * G_PI;
+ G[i][j][0] = cos (alpha);
+ G[i][j][1] = sin (alpha);
+ }
+ }
+
+ g_rand_free (gr);
+}
+
+/* A simple triangle filter */
+/* ======================== */
+
+static gdouble
+filter (gdouble u)
+{
+ gdouble f = 1.0 - fabs (u) / l;
+
+ return (f < 0.0) ? 0.0 : f;
+}
+
+/******************************************************/
+/* Compute the Line Integral Convolution (LIC) at x,y */
+/******************************************************/
+
+static gdouble
+lic_noise (gint x,
+ gint y,
+ gdouble vx,
+ gdouble vy)
+{
+ gdouble i = 0.0;
+ gdouble f1 = 0.0, f2 = 0.0;
+ gdouble u, step = 2.0 * l / isteps;
+ gdouble xx = (gdouble) x, yy = (gdouble) y;
+ gdouble c, s;
+
+ /* Get vector at x,y */
+ /* ================= */
+
+ c = vx;
+ s = vy;
+
+ /* Calculate integral numerically */
+ /* ============================== */
+
+ f1 = filter (-l) * noise (xx + l * c , yy + l * s);
+
+ for (u = -l + step; u <= l; u += step)
+ {
+ f2 = filter (u) * noise ( xx - u * c , yy - u * s);
+ i += (f1 + f2) * 0.5 * step;
+ f1 = f2;
+ }
+
+ i = (i - minv) / (maxv - minv);
+
+ i = CLAMP (i, 0.0, 1.0);
+
+ i = (i / 2.0) + 0.5;
+
+ return i;
+}
+
+static void
+getpixel (GeglBuffer *buffer,
+ GimpRGB *p,
+ gdouble u,
+ gdouble v)
+{
+ register gint x1, y1, x2, y2;
+ gint width, height;
+ static GimpRGB pp[4];
+
+ width = border_w;
+ height = border_h;
+
+ x1 = (gint)u;
+ y1 = (gint)v;
+
+ if (x1 < 0)
+ x1 = width - (-x1 % width);
+ else
+ x1 = x1 % width;
+
+ if (y1 < 0)
+ y1 = height - (-y1 % height);
+ else
+ y1 = y1 % height;
+
+ x2 = (x1 + 1) % width;
+ y2 = (y1 + 1) % height;
+
+ peek (buffer, x1, y1, &pp[0]);
+ peek (buffer, x2, y1, &pp[1]);
+ peek (buffer, x1, y2, &pp[2]);
+ peek (buffer, x2, y2, &pp[3]);
+
+ if (source_drw_has_alpha)
+ *p = gimp_bilinear_rgba (u, v, pp);
+ else
+ *p = gimp_bilinear_rgb (u, v, pp);
+}
+
+static void
+lic_image (GeglBuffer *buffer,
+ gint x,
+ gint y,
+ gdouble vx,
+ gdouble vy,
+ GimpRGB *color)
+{
+ gdouble u, step = 2.0 * l / isteps;
+ gdouble xx = (gdouble) x, yy = (gdouble) y;
+ gdouble c, s;
+ GimpRGB col = { 0, 0, 0, 0 };
+ GimpRGB col1, col2, col3;
+
+ /* Get vector at x,y */
+ /* ================= */
+
+ c = vx;
+ s = vy;
+
+ /* Calculate integral numerically */
+ /* ============================== */
+
+ getpixel (buffer, &col1, xx + l * c, yy + l * s);
+
+ if (source_drw_has_alpha)
+ gimp_rgba_multiply (&col1, filter (-l));
+ else
+ gimp_rgb_multiply (&col1, filter (-l));
+
+ for (u = -l + step; u <= l; u += step)
+ {
+ getpixel (buffer, &col2, xx - u * c, yy - u * s);
+
+ if (source_drw_has_alpha)
+ {
+ gimp_rgba_multiply (&col2, filter (u));
+
+ col3 = col1;
+ gimp_rgba_add (&col3, &col2);
+ gimp_rgba_multiply (&col3, 0.5 * step);
+ gimp_rgba_add (&col, &col3);
+ }
+ else
+ {
+ gimp_rgb_multiply (&col2, filter (u));
+
+ col3 = col1;
+ gimp_rgb_add (&col3, &col2);
+ gimp_rgb_multiply (&col3, 0.5 * step);
+ gimp_rgb_add (&col, &col3);
+ }
+ col1 = col2;
+ }
+ if (source_drw_has_alpha)
+ gimp_rgba_multiply (&col, 1.0 / l);
+ else
+ gimp_rgb_multiply (&col, 1.0 / l);
+ gimp_rgb_clamp (&col);
+
+ *color = col;
+}
+
+static guchar *
+rgb_to_hsl (gint32 drawable_ID,
+ LICEffectChannel effect_channel)
+{
+ GeglBuffer *buffer;
+ guchar *themap, data[4];
+ gint x, y;
+ GimpRGB color;
+ GimpHSL color_hsl;
+ gdouble val = 0.0;
+ glong maxc, index = 0;
+ GRand *gr;
+
+ gr = g_rand_new ();
+
+ maxc = gimp_drawable_width (drawable_ID) * gimp_drawable_height (drawable_ID);
+
+ buffer = gimp_drawable_get_buffer (drawable_ID);
+
+ themap = g_new (guchar, maxc);
+
+ for (y = 0; y < border_h; y++)
+ {
+ for (x = 0; x < border_w; x++)
+ {
+ data[3] = 255;
+
+ gegl_buffer_sample (buffer, x, y, NULL,
+ data, babl_format ("R'G'B'A u8"),
+ GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
+
+ gimp_rgba_set_uchar (&color, data[0], data[1], data[2], data[3]);
+ gimp_rgb_to_hsl (&color, &color_hsl);
+
+ switch (effect_channel)
+ {
+ case LIC_HUE:
+ val = color_hsl.h * 255;
+ break;
+ case LIC_SATURATION:
+ val = color_hsl.s * 255;
+ break;
+ case LIC_BRIGHTNESS:
+ val = color_hsl.l * 255;
+ break;
+ }
+
+ /* add some random to avoid unstructured areas. */
+ val += g_rand_double_range (gr, -1.0, 1.0);
+
+ themap[index++] = (guchar) CLAMP0255 (RINT (val));
+ }
+ }
+
+ g_object_unref (buffer);
+
+ g_rand_free (gr);
+
+ return themap;
+}
+
+
+static void
+compute_lic (gint32 drawable_ID,
+ const guchar *scalarfield,
+ gboolean rotate)
+{
+ GeglBuffer *src_buffer;
+ GeglBuffer *dest_buffer;
+ gint xcount, ycount;
+ GimpRGB color;
+ gdouble vx, vy, tmp;
+
+ src_buffer = gimp_drawable_get_buffer (drawable_ID);
+ dest_buffer = gimp_drawable_get_shadow_buffer (drawable_ID);
+
+ for (ycount = 0; ycount < border_h; ycount++)
+ {
+ for (xcount = 0; xcount < border_w; xcount++)
+ {
+ /* Get derivative at (x,y) and normalize it */
+ /* ============================================================== */
+
+ vx = gradx (scalarfield, xcount, ycount);
+ vy = grady (scalarfield, xcount, ycount);
+
+ /* Rotate if needed */
+ if (rotate)
+ {
+ tmp = vy;
+ vy = -vx;
+ vx = tmp;
+ }
+
+ tmp = sqrt (vx * vx + vy * vy);
+ if (tmp >= 0.000001)
+ {
+ tmp = 1.0 / tmp;
+ vx *= tmp;
+ vy *= tmp;
+ }
+
+ /* Convolve with the LIC at (x,y) */
+ /* ============================== */
+
+ if (licvals.effect_convolve == 0)
+ {
+ peek (src_buffer, xcount, ycount, &color);
+
+ tmp = lic_noise (xcount, ycount, vx, vy);
+
+ if (source_drw_has_alpha)
+ gimp_rgba_multiply (&color, tmp);
+ else
+ gimp_rgb_multiply (&color, tmp);
+ }
+ else
+ {
+ lic_image (src_buffer, xcount, ycount, vx, vy, &color);
+ }
+
+ poke (dest_buffer, xcount, ycount, &color);
+ }
+
+ gimp_progress_update ((gfloat) ycount / (gfloat) border_h);
+ }
+
+ g_object_unref (src_buffer);
+ g_object_unref (dest_buffer);
+
+ gimp_progress_update (1.0);
+}
+
+static void
+compute_image (gint32 drawable_ID)
+{
+ guchar *scalarfield = NULL;
+
+ /* Get some useful info on the input drawable */
+ /* ========================================== */
+ if (! gimp_drawable_mask_intersect (drawable_ID,
+ &border_x, &border_y,
+ &border_w, &border_h))
+ return;
+
+ gimp_progress_init (_("Van Gogh (LIC)"));
+
+ if (licvals.effect_convolve == 0)
+ generatevectors ();
+
+ if (licvals.filtlen < 0.1)
+ licvals.filtlen = 0.1;
+
+ l = licvals.filtlen;
+ dx = dy = licvals.noisemag;
+ minv = licvals.minv / 10.0;
+ maxv = licvals.maxv / 10.0;
+ isteps = licvals.intsteps;
+
+ source_drw_has_alpha = gimp_drawable_has_alpha (drawable_ID);
+
+ effect_width = gimp_drawable_width (licvals.effect_image_id);
+ effect_height = gimp_drawable_height (licvals.effect_image_id);
+
+ switch (licvals.effect_channel)
+ {
+ case 0:
+ scalarfield = rgb_to_hsl (licvals.effect_image_id, LIC_HUE);
+ break;
+ case 1:
+ scalarfield = rgb_to_hsl (licvals.effect_image_id, LIC_SATURATION);
+ break;
+ case 2:
+ scalarfield = rgb_to_hsl (licvals.effect_image_id, LIC_BRIGHTNESS);
+ break;
+ }
+
+ compute_lic (drawable_ID, scalarfield, licvals.effect_operator);
+
+ g_free (scalarfield);
+
+ /* Update image */
+ /* ============ */
+
+ gimp_drawable_merge_shadow (drawable_ID, TRUE);
+ gimp_drawable_update (drawable_ID, border_x, border_y, border_w, border_h);
+
+ gimp_displays_flush ();
+}
+
+/**************************/
+/* Below is only UI stuff */
+/**************************/
+
+static gboolean
+effect_image_constrain (gint32 image_id,
+ gint32 drawable_id,
+ gpointer data)
+{
+ return gimp_drawable_is_rgb (drawable_id);
+}
+
+static gboolean
+create_main_dialog (void)
+{
+ GtkWidget *vbox;
+ GtkWidget *hbox;
+ GtkWidget *frame;
+ GtkWidget *table;
+ GtkWidget *combo;
+ GtkObject *scale_data;
+ gint row;
+ gboolean run;
+
+ gimp_ui_init (PLUG_IN_BINARY, TRUE);
+
+ dialog = gimp_dialog_new (_("Van Gogh (LIC)"), PLUG_IN_ROLE,
+ NULL, 0,
+ gimp_standard_help_func, PLUG_IN_PROC,
+
+ _("_Cancel"), GTK_RESPONSE_CANCEL,
+ _("_OK"), GTK_RESPONSE_OK,
+
+ NULL);
+
+ gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
+ GTK_RESPONSE_OK,
+ GTK_RESPONSE_CANCEL,
+ -1);
+
+ gimp_window_set_transient (GTK_WINDOW (dialog));
+
+ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+ gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
+ gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
+ vbox, TRUE, TRUE, 0);
+ gtk_widget_show (vbox);
+
+ hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
+ gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
+ gtk_widget_show (hbox);
+
+ frame = gimp_int_radio_group_new (TRUE, _("Effect Channel"),
+ G_CALLBACK (gimp_radio_button_update),
+ &licvals.effect_channel,
+ licvals.effect_channel,
+
+ _("_Hue"), 0, NULL,
+ _("_Saturation"), 1, NULL,
+ _("_Brightness"), 2, NULL,
+
+ NULL);
+ gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ frame = gimp_int_radio_group_new (TRUE, _("Effect Operator"),
+ G_CALLBACK (gimp_radio_button_update),
+ &licvals.effect_operator,
+ licvals.effect_operator,
+
+ _("_Derivative"), 0, NULL,
+ _("_Gradient"), 1, NULL,
+
+ NULL);
+ gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ frame = gimp_int_radio_group_new (TRUE, _("Convolve"),
+ G_CALLBACK (gimp_radio_button_update),
+ &licvals.effect_convolve,
+ licvals.effect_convolve,
+
+ _("_With white noise"), 0, NULL,
+ _("W_ith source image"), 1, NULL,
+
+ NULL);
+ gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ /* Effect image menu */
+ table = gtk_table_new (1, 2, FALSE);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
+ gtk_widget_show (table);
+
+ combo = gimp_drawable_combo_box_new (effect_image_constrain, NULL);
+ gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo),
+ licvals.effect_image_id,
+ G_CALLBACK (gimp_int_combo_box_get_active),
+ &licvals.effect_image_id);
+
+ gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
+ _("_Effect image:"), 0.0, 0.5, combo, 2, TRUE);
+
+ table = gtk_table_new (5, 3, FALSE);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
+ gtk_widget_show (table);
+
+ row = 0;
+
+ scale_data = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("_Filter length:"), 0, 6,
+ licvals.filtlen, 0.1, 64, 1.0, 8.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (scale_data, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &licvals.filtlen);
+
+ scale_data = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("_Noise magnitude:"), 0, 6,
+ licvals.noisemag, 1, 5, 0.1, 1.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (scale_data, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &licvals.noisemag);
+
+ scale_data = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("In_tegration steps:"), 0, 6,
+ licvals.intsteps, 1, 40, 1.0, 5.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (scale_data, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &licvals.intsteps);
+
+ scale_data = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("_Minimum value:"), 0, 6,
+ licvals.minv, -100, 0, 1, 10, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (scale_data, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &licvals.minv);
+
+ scale_data = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("M_aximum value:"), 0, 6,
+ licvals.maxv, 0, 100, 1, 10, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (scale_data, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &licvals.maxv);
+
+ gtk_widget_show (dialog);
+
+ run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
+
+ gtk_widget_destroy (dialog);
+
+ return run;
+}
+
+/*************************************/
+/* Set parameters to standard values */
+/*************************************/
+
+static void
+set_default_settings (void)
+{
+ licvals.filtlen = 5;
+ licvals.noisemag = 2;
+ licvals.intsteps = 25;
+ licvals.minv = -25;
+ licvals.maxv = 25;
+ licvals.effect_channel = 2;
+ licvals.effect_operator = 1;
+ licvals.effect_convolve = 1;
+ licvals.effect_image_id = 0;
+}
+
+static void
+query (void)
+{
+ static const GimpParamDef args[] =
+ {
+ { GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0) }" },
+ { GIMP_PDB_IMAGE, "image", "Input image" },
+ { GIMP_PDB_DRAWABLE, "drawable", "Input drawable" }
+ };
+
+ gimp_install_procedure (PLUG_IN_PROC,
+ N_("Special effects that nobody understands"),
+ "No help yet",
+ "Tom Bech & Federico Mena Quintero",
+ "Tom Bech & Federico Mena Quintero",
+ "Version 0.14, September 24 1997",
+ N_("_Van Gogh (LIC)..."),
+ "RGB*",
+ GIMP_PLUGIN,
+ G_N_ELEMENTS (args), 0,
+ args, NULL);
+
+ gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Artistic");
+}
+
+static void
+run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals)
+{
+ static GimpParam values[1];
+ GimpRunMode run_mode;
+ gint32 drawable_ID;
+ GimpPDBStatusType status = GIMP_PDB_SUCCESS;
+
+ INIT_I18N ();
+ gegl_init (NULL, NULL);
+
+ *nreturn_vals = 1;
+ *return_vals = values;
+
+ values[0].type = GIMP_PDB_STATUS;
+ values[0].data.d_status = status;
+
+ /* Set default values */
+ /* ================== */
+
+ set_default_settings ();
+
+ /* Possibly retrieve data */
+ /* ====================== */
+
+ gimp_get_data (PLUG_IN_PROC, &licvals);
+
+ run_mode = param[0].data.d_int32;
+ drawable_ID = param[2].data.d_drawable;
+
+ if (status == GIMP_PDB_SUCCESS)
+ {
+ /* Make sure that the drawable is RGBA or RGB color */
+ /* ================================================ */
+
+ if (gimp_drawable_is_rgb (drawable_ID))
+ {
+ switch (run_mode)
+ {
+ case GIMP_RUN_INTERACTIVE:
+ if (create_main_dialog ())
+ compute_image (drawable_ID);
+
+ gimp_set_data (PLUG_IN_PROC, &licvals, sizeof (LicValues));
+ break;
+
+ case GIMP_RUN_WITH_LAST_VALS:
+ compute_image (drawable_ID);
+ break;
+
+ default:
+ break;
+ }
+ }
+ else
+ {
+ status = GIMP_PDB_EXECUTION_ERROR;
+ }
+ }
+
+ values[0].data.d_status = status;
+}
+
+const GimpPlugInInfo PLUG_IN_INFO =
+{
+ NULL, /* init_proc */
+ NULL, /* quit_proc */
+ query, /* query_proc */
+ run, /* run_proc */
+};
+
+MAIN ()