1
/* Solid Noise plug-in -- creates solid noise textures
2
* Copyright (C) 1997, 1998 Marcelo de Gomensoro Malheiros
4
* GIMP - The GNU Image Manipulation Program
5
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
7
* This program is free software; you can redistribute it and/or modify
8
* it under the terms of the GNU General Public License as published by
9
* the Free Software Foundation; either version 2 of the License, or
10
* (at your option) any later version.
12
* This program is distributed in the hope that it will be useful,
13
* but WITHOUT ANY WARRANTY; without even the implied warranty of
14
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15
* GNU General Public License for more details.
17
* You should have received a copy of the GNU General Public License
18
* along with this program; if not, write to the Free Software
19
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22
/* Solid Noise plug-in version 1.04, May 2004
24
* This plug-in generates solid noise textures based on the
25
* `Noise' and `Turbulence' functions described in the paper
27
* Perlin, K, and Hoffert, E. M., "Hypertexture",
28
* Computer Graphics 23, 3 (August 1989)
30
* The algorithm implemented here also makes possible the
31
* creation of seamless tiles.
33
* You can contact me at <malheiro@dca.fee.unicamp.br>.
34
* Comments and improvements for this code are welcome.
36
* The overall plug-in structure is based on the Whirl plug-in,
37
* which is Copyright (C) 1997 Federico Mena Quintero
42
* Dynamic preview added (Yeti <yeti@physics.muni.cz>).
46
* Added patch from Kevin Turner <kevint@poboxes.com> to use the
47
* current time as the random seed. Thank you!
48
* Incorporated some portability changes from the GIMP distribution.
52
* Fixed a stupid bug with the alpha channel.
53
* Fixed a rounding bug for small tilable textures.
54
* Now the dialog is more compact; using the settings from gtkrc.
58
* Quick fix for wrong pdb declaration. Also changed default seed to 1.
59
* Thanks to Adrian Likins and Federico Mena for the patch!
68
#include <libgimp/gimp.h>
69
#include <libgimp/gimpui.h>
71
#include "libgimp/stdplugins-intl.h"
76
#define PLUG_IN_PROC "plug-in-solid-noise"
77
#define PLUG_IN_BINARY "noise-solid"
80
#define WEIGHT(T) ((2.0*fabs(T)-3.0)*(T)*(T)+1.0)
82
#define SCALE_WIDTH 128
86
/*---- Typedefs ----*/
100
/*---- Prototypes ----*/
102
static void query (void);
103
static void run (const gchar *name,
105
const GimpParam *param,
107
GimpParam **return_vals);
109
static void solid_noise (GimpDrawable *drawable,
110
GimpPreview *preview);
111
static void solid_noise_init (void);
112
static gdouble plain_noise (gdouble x,
115
static gdouble noise (gdouble x,
118
static gboolean solid_noise_dialog (GimpDrawable *drawable);
119
static void solid_noise_draw_one_tile (GimpPixelRgn *rgn,
128
/*---- Variables ----*/
130
const GimpPlugInInfo PLUG_IN_INFO =
132
NULL, /* init_proc */
133
NULL, /* quit_proc */
134
query, /* query_proc */
138
static SolidNoiseValues snvals =
141
FALSE, /* turbulent */
146
FALSE /* random seed */
149
static gint xclip, yclip;
150
static gdouble offset, factor;
151
static gdouble xsize, ysize;
152
static gint perm_tab[TABLE_SIZE];
153
static GimpVector2 grad_tab[TABLE_SIZE];
155
/*---- Functions ----*/
162
static const GimpParamDef args[] =
164
{ GIMP_PDB_INT32, "run-mode", "Interactive, non-interactive" },
165
{ GIMP_PDB_IMAGE, "image", "Input image" },
166
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
167
{ GIMP_PDB_INT32, "tilable", "Create a tilable output (n=0/y=1)" },
168
{ GIMP_PDB_INT32, "turbulent", "Make a turbulent noise (n=0/y=1)" },
169
{ GIMP_PDB_INT32, "seed", "Random seed" },
170
{ GIMP_PDB_INT32, "detail", "Detail level (0 - 15)" },
171
{ GIMP_PDB_FLOAT, "xsize", "Horizontal texture size" },
172
{ GIMP_PDB_FLOAT, "ysize", "Vertical texture size" }
175
gimp_install_procedure (PLUG_IN_PROC,
176
N_("Create a random cloud-like texture"),
177
"Generates 2D textures using Perlin's classic "
178
"solid noise function.",
179
"Marcelo de Gomensoro Malheiros",
180
"Marcelo de Gomensoro Malheiros",
182
N_("_Solid Noise..."),
185
G_N_ELEMENTS (args), 0,
188
gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Render/Clouds");
193
run (const gchar *name,
195
const GimpParam *param,
197
GimpParam **return_vals)
199
static GimpParam values[1];
201
GimpDrawable *drawable;
202
GimpRunMode run_mode;
203
GimpPDBStatusType status;
205
status = GIMP_PDB_SUCCESS;
206
run_mode = param[0].data.d_int32;
211
*return_vals = values;
213
values[0].type = GIMP_PDB_STATUS;
214
values[0].data.d_status = status;
216
drawable = gimp_drawable_get (param[2].data.d_drawable);
220
case GIMP_RUN_INTERACTIVE:
221
gimp_get_data (PLUG_IN_PROC, &snvals);
223
if (!solid_noise_dialog (drawable))
227
case GIMP_RUN_NONINTERACTIVE:
230
status = GIMP_PDB_CALLING_ERROR;
234
snvals.tilable = param[3].data.d_int32;
235
snvals.turbulent = param[4].data.d_int32;
236
snvals.seed = param[5].data.d_int32;
237
snvals.detail = param[6].data.d_int32;
238
snvals.xsize = param[7].data.d_float;
239
snvals.ysize = param[8].data.d_float;
241
if (snvals.random_seed)
242
snvals.seed = g_random_int ();
246
case GIMP_RUN_WITH_LAST_VALS:
247
/* Possibly retrieve data */
248
gimp_get_data (PLUG_IN_PROC, &snvals);
250
if (snvals.random_seed)
251
snvals.seed = g_random_int ();
258
if ((status == GIMP_PDB_SUCCESS) &&
259
(gimp_drawable_is_rgb (drawable->drawable_id) ||
260
gimp_drawable_is_gray (drawable->drawable_id)))
262
solid_noise (drawable, NULL);
264
if (run_mode != GIMP_RUN_NONINTERACTIVE)
265
gimp_displays_flush ();
267
if (run_mode == GIMP_RUN_INTERACTIVE ||
268
run_mode == GIMP_RUN_WITH_LAST_VALS)
270
gimp_set_data (PLUG_IN_PROC, &snvals, sizeof (SolidNoiseValues));
275
status = GIMP_PDB_EXECUTION_ERROR;
278
values[0].data.d_status = status;
280
gimp_drawable_detach (drawable);
285
solid_noise (GimpDrawable *drawable,
286
GimpPreview *preview)
288
GimpPixelRgn dest_rgn;
292
gint progress, max_progress;
298
/* Get selection area */
303
gimp_preview_get_size (preview, &width, &height);
307
if (! gimp_drawable_mask_intersect (drawable->drawable_id,
308
&x, &y, &width, &height))
315
gimp_progress_init (_("Solid Noise"));
318
max_progress = width * height;
320
bytes = gimp_drawable_bpp (drawable->drawable_id);
321
rowstride = width * bytes;
322
has_alpha = gimp_drawable_has_alpha (drawable->drawable_id);
326
dest_rgn.x = dest_rgn.y = 0;
330
dest_rgn.bpp = bytes;
331
dest_rgn.rowstride = rowstride;
332
dest_rgn.data = g_new (guchar, rowstride * height);
336
gimp_pixel_rgn_init (&dest_rgn, drawable,
337
x, y, width, height, TRUE, TRUE);
345
solid_noise_draw_one_tile (&dest_rgn, width, height,
346
x, y, bytes, has_alpha);
350
for (pr = gimp_pixel_rgns_register (1, &dest_rgn), i = 0;
352
pr = gimp_pixel_rgns_process (pr), i++)
354
solid_noise_draw_one_tile (&dest_rgn, width, height,
355
x, y, bytes, has_alpha);
357
progress += dest_rgn.w * dest_rgn.h;
360
gimp_progress_update ((gdouble) progress / (gdouble) max_progress);
363
gimp_progress_update (1.0);
366
/* Update the drawable */
369
gimp_preview_draw_buffer (preview, dest_rgn.data, rowstride);
370
g_free (dest_rgn.data);
374
gimp_drawable_flush (drawable);
375
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
376
gimp_drawable_update (drawable->drawable_id, x, y, width, height);
381
solid_noise_draw_one_tile (GimpPixelRgn *dest_rgn,
389
guchar *dest, *dest_row;
393
dest_row = dest_rgn->data;
395
for (row = dest_rgn->y; row < (dest_rgn->y + dest_rgn->h); row++)
399
for (col = dest_rgn->x; col < (dest_rgn->x + dest_rgn->w); col++)
401
val = (guchar) floor (255.0 * noise ((col - xoffset) / width,
402
(row - yoffset) / height));
404
for (i = 0; i < chns; i++)
411
dest_row += dest_rgn->rowstride;
416
solid_noise_init (void)
424
g_rand_set_seed (gr, snvals.seed);
426
/* Force sane parameters */
427
snvals.detail = CLAMP (snvals.detail, 0, 15);
428
snvals.xsize = CLAMP (snvals.xsize, MIN_SIZE, MAX_SIZE);
429
snvals.ysize = CLAMP (snvals.ysize, MIN_SIZE, MAX_SIZE);
431
/* Set scaling factors */
434
xsize = ceil (snvals.xsize);
435
ysize = ceil (snvals.ysize);
436
xclip = (gint) xsize;
437
yclip = (gint) ysize;
441
xsize = snvals.xsize;
442
ysize = snvals.ysize;
445
/* Set totally empiric normalization values */
446
if (snvals.turbulent)
457
/* Initialize the permutation table */
458
for (i = 0; i < TABLE_SIZE; i++)
461
for (i = 0; i < (TABLE_SIZE >> 1); i++)
463
j = g_rand_int_range (gr, 0, TABLE_SIZE);
464
k = g_rand_int_range (gr, 0, TABLE_SIZE);
466
perm_tab[j] = perm_tab[k];
470
/* Initialize the gradient table */
471
for (i = 0; i < TABLE_SIZE; i++)
475
grad_tab[i].x = g_rand_double_range (gr, -1, 1);
476
grad_tab[i].y = g_rand_double_range (gr, -1, 1);
477
m = grad_tab[i].x * grad_tab[i].x + grad_tab[i].y * grad_tab[i].y;
479
while (m == 0.0 || m > 1.0);
491
plain_noise (gdouble x,
505
for (i = 0; i < 2; i++)
506
for (j = 0; j < 2; j++)
509
n = perm_tab[(((a + i) % (xclip * s)) + perm_tab[((b + j) % (yclip * s)) % TABLE_SIZE]) % TABLE_SIZE];
511
n = perm_tab[(a + i + perm_tab[(b + j) % TABLE_SIZE]) % TABLE_SIZE];
514
sum += WEIGHT(v.x) * WEIGHT(v.y) * (grad_tab[n].x * v.x + grad_tab[n].y * v.y);
534
for (i = 0; i <= snvals.detail; i++)
536
if (snvals.turbulent)
537
sum += fabs (plain_noise (x, y, s));
539
sum += plain_noise (x, y, s);
543
return (sum+offset)*factor;
547
solid_noise_dialog (GimpDrawable *drawable)
550
GtkWidget *main_vbox;
555
GtkWidget *seed_hbox;
556
GtkWidget *spinbutton;
560
gimp_ui_init (PLUG_IN_BINARY, FALSE);
562
/* Dialog initialization */
563
dialog = gimp_dialog_new (_("Solid Noise"), PLUG_IN_BINARY,
565
gimp_standard_help_func, PLUG_IN_PROC,
567
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
568
GTK_STOCK_OK, GTK_RESPONSE_OK,
572
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
577
gimp_window_set_transient (GTK_WINDOW (dialog));
579
main_vbox = gtk_vbox_new (FALSE, 12);
580
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
581
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), main_vbox);
582
gtk_widget_show (main_vbox);
584
preview = gimp_aspect_preview_new (drawable, NULL);
585
gtk_box_pack_start (GTK_BOX (main_vbox), preview, TRUE, TRUE, 0);
586
gtk_widget_show (preview);
588
g_signal_connect_swapped (preview, "invalidated",
589
G_CALLBACK (solid_noise),
593
table = gtk_table_new (4, 3, FALSE);
594
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
595
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
596
gtk_box_pack_start (GTK_BOX (main_vbox), table, FALSE, FALSE, 0);
597
gtk_widget_show (table);
600
seed_hbox = gimp_random_seed_new (&snvals.seed, &snvals.random_seed);
601
label = gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
602
_("_Random seed:"), 1.0, 0.5,
604
gtk_label_set_mnemonic_widget (GTK_LABEL (label),
605
GIMP_RANDOM_SEED_SPINBUTTON (seed_hbox));
606
g_signal_connect_swapped (GIMP_RANDOM_SEED_SPINBUTTON_ADJ (seed_hbox),
608
G_CALLBACK (gimp_preview_invalidate),
612
spinbutton = gimp_spin_button_new (&adj, snvals.detail,
613
1, 15, 1, 3, 0, 1, 0);
614
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
615
_("_Detail:"), 0.0, 0.5,
616
spinbutton, 1, TRUE);
617
g_signal_connect (adj, "value-changed",
618
G_CALLBACK (gimp_int_adjustment_update),
620
g_signal_connect_swapped (adj, "value-changed",
621
G_CALLBACK (gimp_preview_invalidate),
625
toggle = gtk_check_button_new_with_mnemonic ( _("T_urbulent"));
626
gtk_table_attach (GTK_TABLE (table), toggle, 2, 3, 0, 1,
627
GTK_SHRINK | GTK_FILL, GTK_FILL, 1, 0);
628
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), snvals.turbulent);
629
gtk_widget_show (toggle);
631
g_signal_connect (toggle, "toggled",
632
G_CALLBACK (gimp_toggle_button_update),
634
g_signal_connect_swapped (toggle, "toggled",
635
G_CALLBACK (gimp_preview_invalidate),
639
toggle = gtk_check_button_new_with_mnemonic ( _("T_ilable"));
640
gtk_table_attach (GTK_TABLE (table), toggle, 2, 3, 1, 2,
641
GTK_SHRINK | GTK_FILL, GTK_FILL, 1, 0);
642
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), snvals.tilable);
643
gtk_widget_show (toggle);
645
g_signal_connect (toggle, "toggled",
646
G_CALLBACK (gimp_toggle_button_update),
648
g_signal_connect_swapped (toggle, "toggled",
649
G_CALLBACK (gimp_preview_invalidate),
653
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
654
_("_X size:"), SCALE_WIDTH, 0,
655
snvals.xsize, MIN_SIZE, MAX_SIZE, 0.1, 1.0, 1,
658
g_signal_connect (adj, "value-changed",
659
G_CALLBACK (gimp_double_adjustment_update),
661
g_signal_connect_swapped (adj, "value-changed",
662
G_CALLBACK (gimp_preview_invalidate),
666
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 3,
667
_("_Y size:"), SCALE_WIDTH, 0,
668
snvals.ysize, MIN_SIZE, MAX_SIZE, 0.1, 1.0, 1,
671
g_signal_connect (adj, "value-changed",
672
G_CALLBACK (gimp_double_adjustment_update),
674
g_signal_connect_swapped (adj, "value-changed",
675
G_CALLBACK (gimp_preview_invalidate),
678
gtk_widget_show (dialog);
680
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
682
gtk_widget_destroy (dialog);