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PIKApp/plug-ins/common/jigsaw.c

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Initial checkin of Pika from heckimp
2023-09-26 00:35:21 +02:00
/*
* jigsaw - a plug-in for PIKA
*
* Copyright (C) Nigel Wetten
*
* 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/>.
*
* Contact info: nigel@cs.nwu.edu
*
* Version: 1.0.0
*
* Version: 1.0.1
*
* tim coppefield [timecop@japan.co.jp]
*
* Added dynamic preview mode.
*
* Damn, this plugin is the tightest piece of code I ever seen.
* I wish all filters in the plugins operated on guchar *buffer
* of the entire image :) sweet stuff.
*
*/
#include "config.h"
#include <string.h>
#include <libpika/pika.h>
#include <libpika/pikaui.h>
#include "libpika/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-jigsaw"
#define PLUG_IN_BINARY "jigsaw"
#define PLUG_IN_ROLE "pika-jigsaw"
typedef enum
{
BEZIER_1,
BEZIER_2
} style_t;
typedef enum
{
LEFT,
RIGHT,
UP,
DOWN
} bump_t;
#define XFACTOR2 0.0833
#define XFACTOR3 0.2083
#define XFACTOR4 0.2500
#define XFACTOR5 0.2500
#define XFACTOR6 0.2083
#define XFACTOR7 0.0833
#define YFACTOR2 0.1000
#define YFACTOR3 0.2200
#define YFACTOR4 0.1000
#define YFACTOR5 0.1000
#define YFACTOR6 0.4666
#define YFACTOR7 0.1000
#define YFACTOR8 0.2000
#define MAX_VALUE 255
#define MIN_VALUE 0
#define DELTA 0.15
#define BLACK_R 30
#define BLACK_G 30
#define BLACK_B 30
#define WALL_XFACTOR2 0.05
#define WALL_XFACTOR3 0.05
#define WALL_YFACTOR2 0.05
#define WALL_YFACTOR3 0.05
#define WALL_XCONS2 0.2
#define WALL_XCONS3 0.3
#define WALL_YCONS2 0.2
#define WALL_YCONS3 0.3
#define FUDGE 1.2
#define MIN_XTILES 1
#define MAX_XTILES 20
#define MIN_YTILES 1
#define MAX_YTILES 20
#define MIN_BLEND_LINES 0
#define MAX_BLEND_LINES 10
#define MIN_BLEND_AMOUNT 0
#define MAX_BLEND_AMOUNT 1.0
#define DRAW_POINT(buffer, bufsize, index) \
do \
{ \
if ((index) >= 0 && (index) + 2 < (bufsize)) \
{ \
buffer[(index) + 0] = BLACK_R; \
buffer[(index) + 1] = BLACK_G; \
buffer[(index) + 2] = BLACK_B; \
} \
} \
while (0)
#define DARKEN_POINT(buffer, bufsize, index, delta, temp) \
do \
{ \
if ((index) >= 0 && (index) + 2 < (bufsize)) \
{ \
temp = MAX (buffer[(index) + 0] * (1.0 - (delta)), MIN_VALUE); \
buffer[(index) + 0] = temp; \
temp = MAX (buffer[(index) + 1] * (1.0 - (delta)), MIN_VALUE); \
buffer[(index) + 1] = temp; \
temp = MAX (buffer[(index) + 2] * (1.0 - (delta)), MIN_VALUE); \
buffer[(index) + 2] = temp; \
} \
} \
while (0)
#define LIGHTEN_POINT(buffer, bufsize, index, delta, temp) \
do \
{ \
if ((index) >= 0 && (index) + 2 < (bufsize)) \
{ \
temp = MIN (buffer[(index) + 0] * (1.0 + (delta)), MAX_VALUE); \
buffer[(index) + 0] = temp; \
temp = MIN (buffer[(index) + 1] * (1.0 + (delta)), MAX_VALUE); \
buffer[(index) + 1] = temp; \
temp = MIN (buffer[(index) + 2] * (1.0 + (delta)), MAX_VALUE); \
buffer[(index) + 2] = temp; \
} \
} \
while (0)
typedef struct globals_tag globals_t;
struct globals_tag
{
gint *cachex1[4];
gint *cachex2[4];
gint *cachey1[4];
gint *cachey2[4];
gint steps[4];
gint *gridx;
gint *gridy;
gint **blend_outer_cachex1[4];
gint **blend_outer_cachex2[4];
gint **blend_outer_cachey1[4];
gint **blend_outer_cachey2[4];
gint **blend_inner_cachex1[4];
gint **blend_inner_cachex2[4];
gint **blend_inner_cachey1[4];
gint **blend_inner_cachey2[4];
};
typedef struct _Jigsaw Jigsaw;
typedef struct _JigsawClass JigsawClass;
struct _Jigsaw
{
PikaPlugIn parent_instance;
};
struct _JigsawClass
{
PikaPlugInClass parent_class;
};
#define JIGSAW_TYPE (jigsaw_get_type ())
#define JIGSAW (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), JIGSAW_TYPE, Jigsaw))
GType jigsaw_get_type (void) G_GNUC_CONST;
static GList * jigsaw_query_procedures (PikaPlugIn *plug_in);
static PikaProcedure * jigsaw_create_procedure (PikaPlugIn *plug_in,
const gchar *name);
static PikaValueArray * jigsaw_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
const PikaValueArray *args,
gpointer run_data);
static void jigsaw (GObject *config,
PikaDrawable *drawable,
PikaPreview *preview);
static void jigsaw_preview (GtkWidget *widget,
GObject *config);
static gboolean jigsaw_dialog (PikaProcedure *procedure,
GObject *config,
PikaDrawable *drawable);
static void draw_jigsaw (GObject *config,
guchar *buffer,
gint bufsize,
gint width,
gint height,
gint bytes,
gboolean preview_mode);
static void draw_vertical_border (guchar *buffer, gint bufsize,
gint width, gint height,
gint bytes, gint x_offset, gint ytiles,
gint blend_lines, gdouble blend_amount);
static void draw_horizontal_border (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint y_offset, gint xtiles,
gint blend_lines, gdouble blend_amount);
static void draw_vertical_line (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint px[2], gint py[2]);
static void draw_horizontal_line (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint px[2], gint py[2]);
static void darken_vertical_line (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint px[2], gint py[2], gdouble delta);
static void lighten_vertical_line (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint px[2], gint py[2], gdouble delta);
static void darken_horizontal_line (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint px[2], gint py[2], gdouble delta);
static void lighten_horizontal_line(guchar *buffer, gint bufsize,
gint width, gint bytes,
gint px[2], gint py[2], gdouble delta);
static void draw_right_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint x_offset, gint curve_start_offset,
gint steps);
static void draw_left_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint x_offset, gint curve_start_offset,
gint steps);
static void draw_up_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint y_offset, gint curve_start_offset,
gint steps);
static void draw_down_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint y_offset, gint curve_start_offset,
gint steps);
static void darken_right_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint x_offset, gint curve_start_offset,
gint steps, gdouble delta, gint counter);
static void lighten_right_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint x_offset, gint curve_start_offset,
gint steps, gdouble delta, gint counter);
static void darken_left_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint x_offset, gint curve_start_offset,
gint steps, gdouble delta, gint counter);
static void lighten_left_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint x_offset, gint curve_start_offset,
gint steps, gdouble delta, gint counter);
static void darken_up_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint y_offset, gint curve_start_offest,
gint steps, gdouble delta, gint counter);
static void lighten_up_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint y_offset, gint curve_start_offset,
gint steps, gdouble delta, gint counter);
static void darken_down_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint y_offset, gint curve_start_offset,
gint steps, gdouble delta, gint counter);
static void lighten_down_bump (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint y_offset, gint curve_start_offset,
gint steps, gdouble delta, gint counter);
static void generate_grid (gint width, gint height, gint xtiles, gint ytiles,
gint *x, gint *y);
static void generate_bezier (gint px[4], gint py[4], gint steps,
gint *cachex, gint *cachey);
static void malloc_cache (gint blend_lines);
static void free_cache (gint blend_lines);
static void init_right_bump (gint x,
gint y,
gint blend_lines,
gint width,
gint height);
static void init_left_bump (gint x,
gint y,
gint blend_lines,
gint width,
gint height);
static void init_up_bump (gint x,
gint y,
gint blend_lines,
gint width,
gint height);
static void init_down_bump (gint x,
gint y,
gint blend_lines,
gint width,
gint height);
static void draw_bezier_line (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint steps, gint *cx, gint *cy);
static void darken_bezier_line (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint x_offset, gint y_offset, gint steps,
gint *cx, gint *cy, gdouble delta);
static void lighten_bezier_line (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint x_offset, gint y_offset, gint steps,
gint *cx, gint *cy, gdouble delta);
static void draw_bezier_vertical_border (guchar *buffer, gint bufsize,
gint width, gint height,
gint bytes,
gint x_offset, gint xtiles,
gint ytiles, gint blend_lines,
gdouble blend_amount, gint steps);
static void draw_bezier_horizontal_border (guchar *buffer, gint bufsize,
gint width, gint height,
gint bytes,
gint x_offset, gint xtiles,
gint ytiles, gint blend_lines,
gdouble blend_amount, gint steps);
G_DEFINE_TYPE (Jigsaw, jigsaw, PIKA_TYPE_PLUG_IN)
PIKA_MAIN (JIGSAW_TYPE)
DEFINE_STD_SET_I18N
static globals_t globals;
static void
jigsaw_class_init (JigsawClass *klass)
{
PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = jigsaw_query_procedures;
plug_in_class->create_procedure = jigsaw_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
jigsaw_init (Jigsaw *jigsaw)
{
}
static GList *
jigsaw_query_procedures (PikaPlugIn *plug_in)
{
return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
}
static PikaProcedure *
jigsaw_create_procedure (PikaPlugIn *plug_in,
const gchar *name)
{
PikaProcedure *procedure = NULL;
if (! strcmp (name, PLUG_IN_PROC))
{
procedure = pika_image_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
jigsaw_run, NULL, NULL);
pika_procedure_set_image_types (procedure, "RGB*");
pika_procedure_set_sensitivity_mask (procedure,
PIKA_PROCEDURE_SENSITIVE_DRAWABLE);
pika_procedure_set_menu_label (procedure, _("_Jigsaw..."));
pika_procedure_add_menu_path (procedure,
"<Image>/Filters/Render/Pattern");
pika_procedure_set_documentation (procedure,
_("Add a jigsaw-puzzle pattern "
"to the image"),
_("Jigsaw puzzle look"),
name);
pika_procedure_set_attribution (procedure,
"Nigel Wetten",
"Nigel Wetten",
"May 2000");
PIKA_PROC_ARG_INT (procedure, "x",
_("_Horizontal"),
_("Number of pieces going across"),
MIN_XTILES, MAX_XTILES, 5,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "y",
_("_Vertical"),
_("Number of pieces going down"),
MIN_YTILES, MAX_YTILES, 5,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "style",
_("Jigsaw Style"),
_("The style/shape of the jigsaw puzzle "
"{ Square (0), Curved (1) }"),
0, 1, BEZIER_1,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "blend-lines",
_("_Blend width"),
_("Degree of slope of each piece's edge"),
MIN_BLEND_LINES, MAX_BLEND_LINES, 3,
G_PARAM_READWRITE);
PIKA_PROC_ARG_DOUBLE (procedure, "blend-amount",
_("Hi_ghlight"),
_("The amount of highlighting on the edges "
"of each piece"),
MIN_BLEND_AMOUNT, MAX_BLEND_AMOUNT, 0.5,
G_PARAM_READWRITE);
}
return procedure;
}
static PikaValueArray *
jigsaw_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
const PikaValueArray *args,
gpointer run_data)
{
PikaProcedureConfig *config;
PikaDrawable *drawable;
gegl_init (NULL, NULL);
config = pika_procedure_create_config (procedure);
pika_procedure_config_begin_run (config, NULL, run_mode, args);
if (n_drawables != 1)
{
GError *error = NULL;
pika_procedure_config_end_run (config, PIKA_PDB_EXECUTION_ERROR);
g_object_unref (config);
g_set_error (&error, PIKA_PLUG_IN_ERROR, 0,
_("Procedure '%s' only works with one drawable."),
PLUG_IN_PROC);
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CALLING_ERROR,
error);
}
else
{
drawable = drawables[0];
}
switch (run_mode)
{
case PIKA_RUN_INTERACTIVE:
if (! jigsaw_dialog (procedure, G_OBJECT (config), drawable))
{
pika_procedure_config_end_run (config, PIKA_PDB_CANCEL);
g_object_unref (config);
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CANCEL,
NULL);
}
break;
default:
break;
};
pika_progress_init (_("Assembling jigsaw"));
jigsaw (G_OBJECT (config), drawable, NULL);
if (run_mode != PIKA_RUN_NONINTERACTIVE)
pika_displays_flush ();
pika_procedure_config_end_run (config, PIKA_PDB_SUCCESS);
g_object_unref (config);
return pika_procedure_new_return_values (procedure, PIKA_PDB_SUCCESS, NULL);
}
static void
jigsaw (GObject *config,
PikaDrawable *drawable,
PikaPreview *preview)
{
GeglBuffer *gegl_buffer = NULL;
const Babl *format = NULL;
guchar *buffer;
gint width;
gint height;
gint bytes;
gsize buffer_size;
gint x;
gint y;
gint blend_lines;
g_object_get (config,
"x", &x,
"y", &y,
"blend-lines", &blend_lines,
NULL);
if (preview)
{
GBytes *buffer_bytes;
pika_preview_get_size (preview, &width, &height);
buffer_bytes = pika_drawable_get_thumbnail_data (drawable,
width, height,
&width, &height, &bytes);
buffer = g_bytes_unref_to_data (buffer_bytes, &buffer_size);
}
else
{
gegl_buffer = pika_drawable_get_buffer (drawable);
width = pika_drawable_get_width (drawable);
height = pika_drawable_get_height (drawable);
if (pika_drawable_has_alpha (drawable))
format = babl_format ("R'G'B'A u8");
else
format = babl_format ("R'G'B' u8");
bytes = babl_format_get_bytes_per_pixel (format);
/* setup image buffer */
buffer_size = (gsize) bytes * width * height;
buffer = g_new (guchar, buffer_size);
gegl_buffer_get (gegl_buffer, GEGL_RECTANGLE (0, 0, width, height), 1.0,
format, buffer,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
g_object_unref (gegl_buffer);
}
globals.steps[LEFT] = globals.steps[RIGHT] = globals.steps[UP]
= globals.steps[DOWN] = (x < y) ?
(width / x * 2) : (height / y * 2);
malloc_cache (blend_lines);
draw_jigsaw (config, buffer, buffer_size, width, height, bytes,
preview != NULL);
free_cache (blend_lines);
/* cleanup */
if (preview)
{
pika_preview_draw_buffer (preview, buffer, width * bytes);
}
else
{
gegl_buffer = pika_drawable_get_shadow_buffer (drawable);
gegl_buffer_set (gegl_buffer, GEGL_RECTANGLE (0, 0, width, height), 0,
format, buffer,
GEGL_AUTO_ROWSTRIDE);
g_object_unref (gegl_buffer);
pika_drawable_merge_shadow (drawable, TRUE);
pika_drawable_update (drawable, 0, 0, width, height);
}
g_free (buffer);
}
static void
jigsaw_preview (GtkWidget *widget,
GObject *config)
{
PikaPreview *preview = PIKA_PREVIEW (widget);
PikaDrawable *drawable = g_object_get_data (config, "drawable");
jigsaw (config, drawable, preview);
}
static void
generate_bezier (gint px[4],
gint py[4],
gint steps,
gint *cachex,
gint *cachey)
{
gdouble t = 0.0;
gdouble sigma = 1.0 / steps;
gint i;
for (i = 0; i < steps; i++)
{
gdouble t2, t3, x, y, t_1;
t += sigma;
t2 = t * t;
t3 = t2 * t;
t_1 = 1 - t;
x = t_1 * t_1 * t_1 * px[0]
+ 3 * t * t_1 * t_1 * px[1]
+ 3 * t2 * t_1 * px[2]
+ t3 * px[3];
y = t_1 * t_1 * t_1 * py[0]
+ 3 * t * t_1 * t_1 * py[1]
+ 3 * t2 * t_1 * py[2]
+ t3 * py[3];
cachex[i] = (gint) (x + 0.2);
cachey[i] = (gint) (y + 0.2);
} /* for */
}
static void
draw_jigsaw (GObject *config,
guchar *buffer,
gint bufsize,
gint width,
gint height,
gint bytes,
gboolean preview_mode)
{
gint i;
gint *x, *y;
gint xtiles = 5;
gint ytiles = 5;
gint xlines = 4;
gint ylines = 4;
gint blend_lines = 3;
gdouble blend_amount = 0.5;
gint steps = globals.steps[RIGHT];
style_t style = BEZIER_1;
gint progress_total = xlines + ylines - 1;
g_return_if_fail (buffer != NULL);
g_object_get (config,
"x", &xtiles,
"y", &ytiles,
"blend-lines", &blend_lines,
"blend-amount", &blend_amount,
"style", &style,
NULL);
xlines = xtiles - 1;
ylines = ytiles - 1;
progress_total = xlines + ylines - 1;
globals.gridx = g_new (gint, xtiles);
globals.gridy = g_new (gint, ytiles);
x = globals.gridx;
y = globals.gridy;
generate_grid (width, height, xtiles, ytiles, globals.gridx, globals.gridy);
init_right_bump (xtiles, ytiles, blend_lines, width, height);
init_left_bump (xtiles, ytiles, blend_lines, width, height);
init_up_bump (xtiles, ytiles, blend_lines, width, height);
init_down_bump (xtiles, ytiles, blend_lines, width, height);
if (style == BEZIER_1)
{
for (i = 0; i < xlines; i++)
{
draw_vertical_border (buffer, bufsize, width, height, bytes,
x[i], ytiles,
blend_lines, blend_amount);
if (!preview_mode)
pika_progress_update ((gdouble) i / (gdouble) progress_total);
}
for (i = 0; i < ylines; i++)
{
draw_horizontal_border (buffer, bufsize, width, bytes, y[i], xtiles,
blend_lines, blend_amount);
if (!preview_mode)
pika_progress_update ((gdouble) (i + xlines) / (gdouble) progress_total);
}
}
else if (style == BEZIER_2)
{
for (i = 0; i < xlines; i++)
{
draw_bezier_vertical_border (buffer, bufsize, width, height, bytes,
x[i], xtiles, ytiles, blend_lines,
blend_amount, steps);
if (!preview_mode)
pika_progress_update ((gdouble) i / (gdouble) progress_total);
}
for (i = 0; i < ylines; i++)
{
draw_bezier_horizontal_border (buffer, bufsize, width, height, bytes,
y[i], xtiles, ytiles, blend_lines,
blend_amount, steps);
if (!preview_mode)
pika_progress_update ((gdouble) (i + xlines) / (gdouble) progress_total);
}
}
else
{
g_printerr (_("draw_jigsaw: bad style\n"));
pika_quit ();
}
pika_progress_update (1.0);
g_free (globals.gridx);
g_free (globals.gridy);
}
static void
draw_vertical_border (guchar *buffer,
gint bufsize,
gint width,
gint height,
gint bytes,
gint x_offset,
gint ytiles,
gint blend_lines,
gdouble blend_amount)
{
gint i, j;
gint tile_height = height / ytiles;
gint tile_height_eighth = tile_height / 8;
gint curve_start_offset = 3 * tile_height_eighth;
gint curve_end_offset = curve_start_offset + 2 * tile_height_eighth;
gint px[2], py[2];
gint ly[2], dy[2];
gint y_offset = 0;
gdouble delta;
gdouble sigma = blend_amount / blend_lines;
gint right;
for (i = 0; i < ytiles; i++)
{
right = g_random_int_range (0, 2);
/* first straight line from top downwards */
px[0] = px[1] = x_offset;
py[0] = y_offset; py[1] = y_offset + curve_start_offset - 1;
draw_vertical_line (buffer, bufsize, width, bytes, px, py);
delta = blend_amount;
dy[0] = ly[0] = py[0]; dy[1] = ly[1] = py[1];
if (!right)
{
ly[1] += blend_lines + 2;
}
for (j = 0; j < blend_lines; j++)
{
dy[0]++; dy[1]--; ly[0]++; ly[1]--;
px[0] = x_offset - j - 1;
darken_vertical_line (buffer, bufsize, width, bytes, px, dy, delta);
px[0] = x_offset + j + 1;
lighten_vertical_line (buffer, bufsize, width, bytes, px, ly, delta);
delta -= sigma;
}
/* top half of curve */
if (right)
{
draw_right_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[RIGHT]);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
/* use to be -j -1 */
darken_right_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[RIGHT], delta, j);
/* use to be +j + 1 */
lighten_right_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[RIGHT], delta, j);
delta -= sigma;
}
}
else
{
draw_left_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[LEFT]);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
/* use to be -j -1 */
darken_left_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[LEFT], delta, j);
/* use to be -j - 1 */
lighten_left_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[LEFT], delta, j);
delta -= sigma;
}
}
/* bottom straight line of a tile wall */
px[0] = px[1] = x_offset;
py[0] = y_offset + curve_end_offset;
py[1] = globals.gridy[i];
draw_vertical_line (buffer, bufsize, width, bytes, px, py);
delta = blend_amount;
dy[0] = ly[0] = py[0]; dy[1] = ly[1] = py[1];
if (right)
{
dy[0] -= blend_lines + 2;
}
for (j = 0; j < blend_lines; j++)
{
dy[0]++; dy[1]--; ly[0]++; ly[1]--;
px[0] = x_offset - j - 1;
darken_vertical_line (buffer, bufsize, width, bytes, px, dy, delta);
px[0] = x_offset + j + 1;
lighten_vertical_line (buffer, bufsize, width, bytes, px, ly, delta);
delta -= sigma;
}
y_offset = globals.gridy[i];
} /* for */
}
/* assumes RGB* */
static void
draw_horizontal_border (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint y_offset,
gint xtiles,
gint blend_lines,
gdouble blend_amount)
{
gint i, j;
gint tile_width = width / xtiles;
gint tile_width_eighth = tile_width / 8;
gint curve_start_offset = 3 * tile_width_eighth;
gint curve_end_offset = curve_start_offset + 2 * tile_width_eighth;
gint px[2], py[2];
gint dx[2], lx[2];
gint x_offset = 0;
gdouble delta;
gdouble sigma = blend_amount / blend_lines;
gint up;
for (i = 0; i < xtiles; i++)
{
up = g_random_int_range (0, 2);
/* first horizontal line across */
px[0] = x_offset; px[1] = x_offset + curve_start_offset - 1;
py[0] = py[1] = y_offset;
draw_horizontal_line (buffer, bufsize, width, bytes, px, py);
delta = blend_amount;
dx[0] = lx[0] = px[0]; dx[1] = lx[1] = px[1];
if (up)
{
lx[1] += blend_lines + 2;
}
for (j = 0; j < blend_lines; j++)
{
dx[0]++; dx[1]--; lx[0]++; lx[1]--;
py[0] = y_offset - j - 1;
darken_horizontal_line (buffer, bufsize, width, bytes, dx, py,
delta);
py[0] = y_offset + j + 1;
lighten_horizontal_line (buffer, bufsize, width, bytes, lx, py,
delta);
delta -= sigma;
}
if (up)
{
draw_up_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[UP]);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
/* use to be -j -1 */
darken_up_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[UP], delta, j);
/* use to be +j + 1 */
lighten_up_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[UP], delta, j);
delta -= sigma;
}
}
else
{
draw_down_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[DOWN]);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
/* use to be +j + 1 */
darken_down_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[DOWN], delta, j);
/* use to be -j -1 */
lighten_down_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[DOWN], delta, j);
delta -= sigma;
}
}
/* right horizontal line of tile */
px[0] = x_offset + curve_end_offset;
px[1] = globals.gridx[i];
py[0] = py[1] = y_offset;
draw_horizontal_line (buffer, bufsize, width, bytes, px, py);
delta = blend_amount;
dx[0] = lx[0] = px[0]; dx[1] = lx[1] = px[1];
if (!up)
{
dx[0] -= blend_lines + 2;
}
for (j = 0;j < blend_lines; j++)
{
dx[0]++; dx[1]--; lx[0]++; lx[1]--;
py[0] = y_offset - j - 1;
darken_horizontal_line (buffer, bufsize, width, bytes, dx, py,
delta);
py[0] = y_offset + j + 1;
lighten_horizontal_line (buffer, bufsize, width, bytes, lx, py,
delta);
delta -= sigma;
}
x_offset = globals.gridx[i];
} /* for */
}
/* assumes going top to bottom */
static void
draw_vertical_line (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint px[2],
gint py[2])
{
gint i;
gint rowstride;
gint index;
gint length;
rowstride = bytes * width;
index = px[0] * bytes + rowstride * py[0];
length = py[1] - py[0] + 1;
for (i = 0; i < length; i++)
{
DRAW_POINT (buffer, bufsize, index);
index += rowstride;
}
}
/* assumes going left to right */
static void
draw_horizontal_line (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint px[2],
gint py[2])
{
gint i;
gint rowstride;
gint index;
gint length;
rowstride = bytes * width;
index = px[0] * bytes + rowstride * py[0];
length = px[1] - px[0] + 1;
for (i = 0; i < length; i++)
{
DRAW_POINT (buffer, bufsize, index);
index += bytes;
}
}
static void
draw_right_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint x_offset,
gint curve_start_offset,
gint steps)
{
gint i;
gint x, y;
gint index;
gint rowstride;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = globals.cachex1[RIGHT][i] + x_offset;
y = globals.cachey1[RIGHT][i] + curve_start_offset;
index = y * rowstride + x * bytes;
DRAW_POINT (buffer, bufsize, index);
x = globals.cachex2[RIGHT][i] + x_offset;
y = globals.cachey2[RIGHT][i] + curve_start_offset;
index = y * rowstride + x * bytes;
DRAW_POINT (buffer, bufsize, index);
}
}
static void
draw_left_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint x_offset,
gint curve_start_offset,
gint steps)
{
gint i;
gint x, y;
gint index;
gint rowstride;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = globals.cachex1[LEFT][i] + x_offset;
y = globals.cachey1[LEFT][i] + curve_start_offset;
index = y * rowstride + x * bytes;
DRAW_POINT (buffer, bufsize, index);
x = globals.cachex2[LEFT][i] + x_offset;
y = globals.cachey2[LEFT][i] + curve_start_offset;
index = y * rowstride + x * bytes;
DRAW_POINT (buffer, bufsize, index);
}
}
static void
draw_up_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint y_offset,
gint curve_start_offset,
gint steps)
{
gint i;
gint x, y;
gint index;
gint rowstride;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = globals.cachex1[UP][i] + curve_start_offset;
y = globals.cachey1[UP][i] + y_offset;
index = y * rowstride + x * bytes;
DRAW_POINT (buffer, bufsize, index);
x = globals.cachex2[UP][i] + curve_start_offset;
y = globals.cachey2[UP][i] + y_offset;
index = y * rowstride + x * bytes;
DRAW_POINT (buffer, bufsize, index);
}
}
static void
draw_down_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint y_offset,
gint curve_start_offset,
gint steps)
{
gint i;
gint x, y;
gint index;
gint rowstride;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = globals.cachex1[DOWN][i] + curve_start_offset;
y = globals.cachey1[DOWN][i] + y_offset;
index = y * rowstride + x * bytes;
DRAW_POINT (buffer, bufsize, index);
x = globals.cachex2[DOWN][i] + curve_start_offset;
y = globals.cachey2[DOWN][i] + y_offset;
index = y * rowstride + x * bytes;
DRAW_POINT (buffer, bufsize, index);
}
}
static void
malloc_cache (gint blend_lines)
{
gint i, j;
for (i = 0; i < 4; i++)
{
gint steps = globals.steps[i];
globals.cachex1[i] = g_new (gint, steps);
globals.cachex2[i] = g_new (gint, steps);
globals.cachey1[i] = g_new (gint, steps);
globals.cachey2[i] = g_new (gint, steps);
globals.blend_outer_cachex1[i] = g_new (gint *, blend_lines);
globals.blend_outer_cachex2[i] = g_new (gint *, blend_lines);
globals.blend_outer_cachey1[i] = g_new (gint *, blend_lines);
globals.blend_outer_cachey2[i] = g_new (gint *, blend_lines);
globals.blend_inner_cachex1[i] = g_new (gint *, blend_lines);
globals.blend_inner_cachex2[i] = g_new (gint *, blend_lines);
globals.blend_inner_cachey1[i] = g_new (gint *, blend_lines);
globals.blend_inner_cachey2[i] = g_new (gint *, blend_lines);
for (j = 0; j < blend_lines; j++)
{
globals.blend_outer_cachex1[i][j] = g_new (gint, steps);
globals.blend_outer_cachex2[i][j] = g_new (gint, steps);
globals.blend_outer_cachey1[i][j] = g_new (gint, steps);
globals.blend_outer_cachey2[i][j] = g_new (gint, steps);
globals.blend_inner_cachex1[i][j] = g_new (gint, steps);
globals.blend_inner_cachex2[i][j] = g_new (gint, steps);
globals.blend_inner_cachey1[i][j] = g_new (gint, steps);
globals.blend_inner_cachey2[i][j] = g_new (gint, steps);
}
}
}
static void
free_cache (gint blend_lines)
{
gint i, j;
for (i = 0; i < 4; i ++)
{
g_free (globals.cachex1[i]);
g_free (globals.cachex2[i]);
g_free (globals.cachey1[i]);
g_free (globals.cachey2[i]);
for (j = 0; j < blend_lines; j++)
{
g_free (globals.blend_outer_cachex1[i][j]);
g_free (globals.blend_outer_cachex2[i][j]);
g_free (globals.blend_outer_cachey1[i][j]);
g_free (globals.blend_outer_cachey2[i][j]);
g_free (globals.blend_inner_cachex1[i][j]);
g_free (globals.blend_inner_cachex2[i][j]);
g_free (globals.blend_inner_cachey1[i][j]);
g_free (globals.blend_inner_cachey2[i][j]);
}
g_free (globals.blend_outer_cachex1[i]);
g_free (globals.blend_outer_cachex2[i]);
g_free (globals.blend_outer_cachey1[i]);
g_free (globals.blend_outer_cachey2[i]);
g_free (globals.blend_inner_cachex1[i]);
g_free (globals.blend_inner_cachex2[i]);
g_free (globals.blend_inner_cachey1[i]);
g_free (globals.blend_inner_cachey2[i]);
}
}
static void
init_right_bump (gint x,
gint y,
gint blend_lines,
gint width,
gint height)
{
gint i;
gint xtiles = x;
gint ytiles = y;
gint steps = globals.steps[RIGHT];
gint px[4], py[4];
gint x_offset = 0;
gint tile_width = width / xtiles;
gint tile_height = height/ ytiles;
gint tile_height_eighth = tile_height / 8;
gint curve_start_offset = 0;
gint curve_end_offset = curve_start_offset + 2 * tile_height_eighth;
px[0] = x_offset;
px[1] = x_offset + XFACTOR2 * tile_width;
px[2] = x_offset + XFACTOR3 * tile_width;
px[3] = x_offset + XFACTOR4 * tile_width;
py[0] = curve_start_offset;
py[1] = curve_start_offset + YFACTOR2 * tile_height;
py[2] = curve_start_offset - YFACTOR3 * tile_height;
py[3] = curve_start_offset + YFACTOR4 * tile_height;
generate_bezier(px, py, steps, globals.cachex1[RIGHT],
globals.cachey1[RIGHT]);
/* outside right bump */
for (i = 0; i < blend_lines; i++)
{
py[0]--; py[1]--; py[2]--; px[3]++;
generate_bezier(px, py, steps,
globals.blend_outer_cachex1[RIGHT][i],
globals.blend_outer_cachey1[RIGHT][i]);
}
/* inside right bump */
py[0] += blend_lines; py[1] += blend_lines; py[2] += blend_lines;
px[3] -= blend_lines;
for (i = 0; i < blend_lines; i++)
{
py[0]++; py[1]++; py[2]++; px[3]--;
generate_bezier(px, py, steps,
globals.blend_inner_cachex1[RIGHT][i],
globals.blend_inner_cachey1[RIGHT][i]);
}
/* bottom half of bump */
px[0] = x_offset + XFACTOR5 * tile_width;
px[1] = x_offset + XFACTOR6 * tile_width;
px[2] = x_offset + XFACTOR7 * tile_width;
px[3] = x_offset;
py[0] = curve_start_offset + YFACTOR5 * tile_height;
py[1] = curve_start_offset + YFACTOR6 * tile_height;
py[2] = curve_start_offset + YFACTOR7 * tile_height;
py[3] = curve_end_offset;
generate_bezier(px, py, steps, globals.cachex2[RIGHT],
globals.cachey2[RIGHT]);
/* outer right bump */
for (i = 0; i < blend_lines; i++)
{
py[1]++; py[2]++; py[3]++; px[0]++;
generate_bezier(px, py, steps,
globals.blend_outer_cachex2[RIGHT][i],
globals.blend_outer_cachey2[RIGHT][i]);
}
/* inner right bump */
py[1] -= blend_lines; py[2] -= blend_lines; py[3] -= blend_lines;
px[0] -= blend_lines;
for (i = 0; i < blend_lines; i++)
{
py[1]--; py[2]--; py[3]--; px[0]--;
generate_bezier(px, py, steps,
globals.blend_inner_cachex2[RIGHT][i],
globals.blend_inner_cachey2[RIGHT][i]);
}
}
static void
init_left_bump (gint x,
gint y,
gint blend_lines,
gint width,
gint height)
{
gint i;
gint xtiles = x;
gint ytiles = y;
gint steps = globals.steps[LEFT];
gint px[4], py[4];
gint x_offset = 0;
gint tile_width = width / xtiles;
gint tile_height = height / ytiles;
gint tile_height_eighth = tile_height / 8;
gint curve_start_offset = 0;
gint curve_end_offset = curve_start_offset + 2 * tile_height_eighth;
px[0] = x_offset;
px[1] = x_offset - XFACTOR2 * tile_width;
px[2] = x_offset - XFACTOR3 * tile_width;
px[3] = x_offset - XFACTOR4 * tile_width;
py[0] = curve_start_offset;
py[1] = curve_start_offset + YFACTOR2 * tile_height;
py[2] = curve_start_offset - YFACTOR3 * tile_height;
py[3] = curve_start_offset + YFACTOR4 * tile_height;
generate_bezier(px, py, steps, globals.cachex1[LEFT],
globals.cachey1[LEFT]);
/* outer left bump */
for (i = 0; i < blend_lines; i++)
{
py[0]--; py[1]--; py[2]--; px[3]--;
generate_bezier(px, py, steps,
globals.blend_outer_cachex1[LEFT][i],
globals.blend_outer_cachey1[LEFT][i]);
}
/* inner left bump */
py[0] += blend_lines; py[1] += blend_lines; py[2] += blend_lines;
px[3] += blend_lines;
for (i = 0; i < blend_lines; i++)
{
py[0]++; py[1]++; py[2]++; px[3]++;
generate_bezier(px, py, steps,
globals.blend_inner_cachex1[LEFT][i],
globals.blend_inner_cachey1[LEFT][i]);
}
/* bottom half of bump */
px[0] = x_offset - XFACTOR5 * tile_width;
px[1] = x_offset - XFACTOR6 * tile_width;
px[2] = x_offset - XFACTOR7 * tile_width;
px[3] = x_offset;
py[0] = curve_start_offset + YFACTOR5 * tile_height;
py[1] = curve_start_offset + YFACTOR6 * tile_height;
py[2] = curve_start_offset + YFACTOR7 * tile_height;
py[3] = curve_end_offset;
generate_bezier(px, py, steps, globals.cachex2[LEFT],
globals.cachey2[LEFT]);
/* outer left bump */
for (i = 0; i < blend_lines; i++)
{
py[1]++; py[2]++; py[3]++; px[0]--;
generate_bezier(px, py, steps,
globals.blend_outer_cachex2[LEFT][i],
globals.blend_outer_cachey2[LEFT][i]);
}
/* inner left bump */
py[1] -= blend_lines; py[2] -= blend_lines; py[3] -= blend_lines;
px[0] += blend_lines;
for (i = 0; i < blend_lines; i++)
{
py[1]--; py[2]--; py[3]--; px[0]++;
generate_bezier(px, py, steps,
globals.blend_inner_cachex2[LEFT][i],
globals.blend_inner_cachey2[LEFT][i]);
}
}
static void
init_up_bump (gint x,
gint y,
gint blend_lines,
gint width,
gint height)
{
gint i;
gint xtiles = x;
gint ytiles = y;
gint steps = globals.steps[UP];
gint px[4], py[4];
gint y_offset = 0;
gint tile_width = width / xtiles;
gint tile_height = height/ ytiles;
gint tile_width_eighth = tile_width / 8;
gint curve_start_offset = 0;
gint curve_end_offset = curve_start_offset + 2 * tile_width_eighth;
px[0] = curve_start_offset;
px[1] = curve_start_offset + YFACTOR2 * tile_width;
px[2] = curve_start_offset - YFACTOR3 * tile_width;
px[3] = curve_start_offset + YFACTOR4 * tile_width;
py[0] = y_offset;
py[1] = y_offset - XFACTOR2 * tile_height;
py[2] = y_offset - XFACTOR3 * tile_height;
py[3] = y_offset - XFACTOR4 * tile_height;
generate_bezier(px, py, steps, globals.cachex1[UP],
globals.cachey1[UP]);
/* outer up bump */
for (i = 0; i < blend_lines; i++)
{
px[0]--; px[1]--; px[2]--; py[3]--;
generate_bezier(px, py, steps,
globals.blend_outer_cachex1[UP][i],
globals.blend_outer_cachey1[UP][i]);
}
/* inner up bump */
px[0] += blend_lines; px[1] += blend_lines; px[2] += blend_lines;
py[3] += blend_lines;
for (i = 0; i < blend_lines; i++)
{
px[0]++; px[1]++; px[2]++; py[3]++;
generate_bezier(px, py, steps,
globals.blend_inner_cachex1[UP][i],
globals.blend_inner_cachey1[UP][i]);
}
/* bottom half of bump */
px[0] = curve_start_offset + YFACTOR5 * tile_width;
px[1] = curve_start_offset + YFACTOR6 * tile_width;
px[2] = curve_start_offset + YFACTOR7 * tile_width;
px[3] = curve_end_offset;
py[0] = y_offset - XFACTOR5 * tile_height;
py[1] = y_offset - XFACTOR6 * tile_height;
py[2] = y_offset - XFACTOR7 * tile_height;
py[3] = y_offset;
generate_bezier(px, py, steps, globals.cachex2[UP],
globals.cachey2[UP]);
/* outer up bump */
for (i = 0; i < blend_lines; i++)
{
px[1]++; px[2]++; px[3]++; py[0]--;
generate_bezier(px, py, steps,
globals.blend_outer_cachex2[UP][i],
globals.blend_outer_cachey2[UP][i]);
}
/* inner up bump */
px[1] -= blend_lines; px[2] -= blend_lines; px[3] -= blend_lines;
py[0] += blend_lines;
for (i = 0; i < blend_lines; i++)
{
px[1]--; px[2]--; px[3]--; py[0]++;
generate_bezier(px, py, steps,
globals.blend_inner_cachex2[UP][i],
globals.blend_inner_cachey2[UP][i]);
}
}
static void
init_down_bump (gint x,
gint y,
gint blend_lines,
gint width,
gint height)
{
gint i;
gint xtiles = x;
gint ytiles = y;
gint steps = globals.steps[DOWN];
gint px[4], py[4];
gint y_offset = 0;
gint tile_width = width / xtiles;
gint tile_height = height/ ytiles;
gint tile_width_eighth = tile_width / 8;
gint curve_start_offset = 0;
gint curve_end_offset = curve_start_offset + 2 * tile_width_eighth;
px[0] = curve_start_offset;
px[1] = curve_start_offset + YFACTOR2 * tile_width;
px[2] = curve_start_offset - YFACTOR3 * tile_width;
px[3] = curve_start_offset + YFACTOR4 * tile_width;
py[0] = y_offset;
py[1] = y_offset + XFACTOR2 * tile_height;
py[2] = y_offset + XFACTOR3 * tile_height;
py[3] = y_offset + XFACTOR4 * tile_height;
generate_bezier(px, py, steps, globals.cachex1[DOWN],
globals.cachey1[DOWN]);
/* outer down bump */
for (i = 0; i < blend_lines; i++)
{
px[0]--; px[1]--; px[2]--; py[3]++;
generate_bezier(px, py, steps,
globals.blend_outer_cachex1[DOWN][i],
globals.blend_outer_cachey1[DOWN][i]);
}
/* inner down bump */
px[0] += blend_lines; px[1] += blend_lines; px[2] += blend_lines;
py[3] -= blend_lines;
for (i = 0; i < blend_lines; i++)
{
px[0]++; px[1]++; px[2]++; py[3]--;
generate_bezier(px, py, steps,
globals.blend_inner_cachex1[DOWN][i],
globals.blend_inner_cachey1[DOWN][i]);
}
/* bottom half of bump */
px[0] = curve_start_offset + YFACTOR5 * tile_width;
px[1] = curve_start_offset + YFACTOR6 * tile_width;
px[2] = curve_start_offset + YFACTOR7 * tile_width;
px[3] = curve_end_offset;
py[0] = y_offset + XFACTOR5 * tile_height;
py[1] = y_offset + XFACTOR6 * tile_height;
py[2] = y_offset + XFACTOR7 * tile_height;
py[3] = y_offset;
generate_bezier(px, py, steps, globals.cachex2[DOWN],
globals.cachey2[DOWN]);
/* outer down bump */
for (i = 0; i < blend_lines; i++)
{
px[1]++; px[2]++; px[3]++; py[0]++;
generate_bezier(px, py, steps,
globals.blend_outer_cachex2[DOWN][i],
globals.blend_outer_cachey2[DOWN][i]);
}
/* inner down bump */
px[1] -= blend_lines; px[2] -= blend_lines; px[3] -= blend_lines;
py[0] -= blend_lines;
for (i = 0; i < blend_lines; i++)
{
px[1]--; px[2]--; px[3]--; py[0]--;
generate_bezier(px, py, steps,
globals.blend_inner_cachex2[DOWN][i],
globals.blend_inner_cachey2[DOWN][i]);
}
}
static void
generate_grid (gint width,
gint height,
gint xtiles,
gint ytiles,
gint *x,
gint *y)
{
gint i;
gint xlines = xtiles - 1;
gint ylines = ytiles - 1;
gint tile_width = width / xtiles;
gint tile_height = height / ytiles;
gint tile_width_leftover = width % xtiles;
gint tile_height_leftover = height % ytiles;
gint x_offset = tile_width;
gint y_offset = tile_height;
gint carry;
for (i = 0; i < xlines; i++)
{
x[i] = x_offset;
x_offset += tile_width;
}
carry = 0;
while (tile_width_leftover)
{
for (i = carry; i < xlines; i++)
{
x[i] += 1;
}
tile_width_leftover--;
carry++;
}
x[xlines] = width - 1; /* padding for draw_horizontal_border */
for (i = 0; i < ytiles; i++)
{
y[i] = y_offset;
y_offset += tile_height;
}
carry = 0;
while (tile_height_leftover)
{
for (i = carry; i < ylines; i++)
{
y[i] += 1;
}
tile_height_leftover--;
carry++;
}
y[ylines] = height - 1; /* padding for draw_vertical_border */
}
/* assumes RGB* */
/* assumes py[1] > py[0] and px[0] = px[1] */
static void
darken_vertical_line (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint px[2],
gint py[2],
gdouble delta)
{
gint i;
gint rowstride;
gint index;
gint length;
gint temp;
rowstride = bytes * width;
index = px[0] * bytes + py[0] * rowstride;
length = py[1] - py[0] + 1;
for (i = 0; i < length; i++)
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
index += rowstride;
}
}
/* assumes RGB* */
/* assumes py[1] > py[0] and px[0] = px[1] */
static void
lighten_vertical_line (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint px[2],
gint py[2],
gdouble delta)
{
gint i;
gint rowstride;
gint index;
gint length;
gint temp;
rowstride = bytes * width;
index = px[0] * bytes + py[0] * rowstride;
length = py[1] - py[0] + 1;
for (i = 0; i < length; i++)
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
index += rowstride;
}
}
/* assumes RGB* */
/* assumes px[1] > px[0] and py[0] = py[1] */
static void
darken_horizontal_line (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint px[2],
gint py[2],
gdouble delta)
{
gint i;
gint rowstride;
gint index;
gint length;
gint temp;
rowstride = bytes * width;
index = px[0] * bytes + py[0] * rowstride;
length = px[1] - px[0] + 1;
for (i = 0; i < length; i++)
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
index += bytes;
}
}
/* assumes RGB* */
/* assumes px[1] > px[0] and py[0] = py[1] */
static void
lighten_horizontal_line (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint px[2],
gint py[2],
gdouble delta)
{
gint i;
gint rowstride;
gint index;
gint length;
gint temp;
rowstride = bytes * width;
index = px[0] * bytes + py[0] * rowstride;
length = px[1] - px[0] + 1;
for (i = 0; i < length; i++)
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
index += bytes;
}
}
static void
darken_right_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint x_offset,
gint curve_start_offset,
gint steps,
gdouble delta,
gint counter)
{
gint i;
gint x, y;
gint index;
gint last_index1 = -1;
gint last_index2 = -1;
gint rowstride;
gint temp;
gint j = counter;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = x_offset
+ globals.blend_inner_cachex1[RIGHT][j][i];
y = curve_start_offset
+ globals.blend_inner_cachey1[RIGHT][j][i];
index = y * rowstride + x * bytes;
if (index != last_index1)
{
if (i < steps / 1.3)
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
}
else
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
}
last_index1 = index;
}
x = x_offset
+ globals.blend_inner_cachex2[RIGHT][j][i];
y = curve_start_offset
+ globals.blend_inner_cachey2[RIGHT][j][i];
index = y * rowstride + x * bytes;
if (index != last_index2)
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
last_index2 = index;
}
}
}
static void
lighten_right_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint x_offset,
gint curve_start_offset,
gint steps,
gdouble delta,
gint counter)
{
gint i;
gint x, y;
gint index;
gint last_index1 = -1;
gint last_index2 = -1;
gint rowstride;
gint temp;
gint j = counter;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = x_offset
+ globals.blend_outer_cachex1[RIGHT][j][i];
y = curve_start_offset
+ globals.blend_outer_cachey1[RIGHT][j][i];
index = y * rowstride + x * bytes;
if (index != last_index1)
{
if (i < steps / 1.3)
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
}
else
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
}
last_index1 = index;
}
x = x_offset
+ globals.blend_outer_cachex2[RIGHT][j][i];
y = curve_start_offset
+ globals.blend_outer_cachey2[RIGHT][j][i];
index = y * rowstride + x * bytes;
if (index != last_index2)
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
last_index2 = index;
}
}
}
static void
darken_left_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint x_offset,
gint curve_start_offset,
gint steps,
gdouble delta,
gint counter)
{
gint i;
gint x, y;
gint index;
gint last_index1 = -1;
gint last_index2 = -1;
gint rowstride;
gint temp;
gint j = counter;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = x_offset
+ globals.blend_outer_cachex1[LEFT][j][i];
y = curve_start_offset
+ globals.blend_outer_cachey1[LEFT][j][i];
index = y * rowstride + x * bytes;
if (index != last_index1)
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
last_index1 = index;
}
x = x_offset
+ globals.blend_outer_cachex2[LEFT][j][i];
y = curve_start_offset
+ globals.blend_outer_cachey2[LEFT][j][i];
index = y * rowstride + x * bytes;
if (index != last_index2)
{
if (i < steps / 4)
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
}
else
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
}
last_index2 = index;
}
}
}
static void
lighten_left_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint x_offset,
gint curve_start_offset,
gint steps,
gdouble delta,
gint counter)
{
gint i;
gint x, y;
gint index;
gint last_index1 = -1;
gint last_index2 = -1;
gint rowstride;
gint temp;
gint j = counter;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = x_offset
+ globals.blend_inner_cachex1[LEFT][j][i];
y = curve_start_offset
+ globals.blend_inner_cachey1[LEFT][j][i];
index = y * rowstride + x * bytes;
if (index != last_index1)
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
last_index1 = index;
}
x = x_offset
+ globals.blend_inner_cachex2[LEFT][j][i];
y = curve_start_offset
+ globals.blend_inner_cachey2[LEFT][j][i];
index = y * rowstride + x * bytes;
if (index != last_index2)
{
if (i < steps / 4)
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
}
else
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
}
last_index2 = index;
}
}
}
static void
darken_up_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint y_offset,
gint curve_start_offset,
gint steps,
gdouble delta,
gint counter)
{
gint i;
gint x, y;
gint index;
gint last_index1 = -1;
gint last_index2 = -1;
gint rowstride;
gint temp;
gint j = counter;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = curve_start_offset
+ globals.blend_outer_cachex1[UP][j][i];
y = y_offset
+ globals.blend_outer_cachey1[UP][j][i];
index = y * rowstride + x * bytes;
if (index != last_index1)
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
last_index1 = index;
}
x = curve_start_offset
+ globals.blend_outer_cachex2[UP][j][i];
y = y_offset
+ globals.blend_outer_cachey2[UP][j][i];
index = y * rowstride + x * bytes;
if (index != last_index2)
{
if (i < steps / 4)
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
}
else
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
}
last_index2 = index;
}
}
}
static void
lighten_up_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint y_offset,
gint curve_start_offset,
gint steps,
gdouble delta,
gint counter)
{
gint i;
gint x, y;
gint index;
gint last_index1 = -1;
gint last_index2 = -1;
gint rowstride;
gint temp;
gint j = counter;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = curve_start_offset
+ globals.blend_inner_cachex1[UP][j][i];
y = y_offset
+ globals.blend_inner_cachey1[UP][j][i];
index = y * rowstride + x * bytes;
if (index != last_index1)
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
last_index1 = index;
}
x = curve_start_offset
+ globals.blend_inner_cachex2[UP][j][i];
y = y_offset
+ globals.blend_inner_cachey2[UP][j][i];
index = y * rowstride + x * bytes;
if (index != last_index2)
{
if (i < steps / 4)
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
}
else
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
}
last_index2 = index;
}
}
}
static void
darken_down_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint y_offset,
gint curve_start_offset,
gint steps,
gdouble delta,
gint counter)
{
gint i;
gint x, y;
gint index;
gint last_index1 = -1;
gint last_index2 = -1;
gint rowstride;
gint temp;
gint j = counter;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = curve_start_offset
+ globals.blend_inner_cachex1[DOWN][j][i];
y = y_offset
+ globals.blend_inner_cachey1[DOWN][j][i];
index = y * rowstride + x * bytes;
if (index != last_index1)
{
if (i < steps / 1.2)
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
}
else
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
}
last_index1 = index;
}
x = curve_start_offset
+ globals.blend_inner_cachex2[DOWN][j][i];
y = y_offset
+ globals.blend_inner_cachey2[DOWN][j][i];
index = y * rowstride + x * bytes;
if (index != last_index2)
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
last_index2 = index;
}
}
}
static void
lighten_down_bump (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint y_offset,
gint curve_start_offset,
gint steps,
gdouble delta,
gint counter)
{
gint i;
gint x, y;
gint index;
gint last_index1 = -1;
gint last_index2 = -1;
gint rowstride;
gint temp;
gint j = counter;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = curve_start_offset
+ globals.blend_outer_cachex1[DOWN][j][i];
y = y_offset
+ globals.blend_outer_cachey1[DOWN][j][i];
index = y * rowstride + x * bytes;
if (index != last_index1)
{
if (i < steps / 1.2)
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
}
else
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
}
last_index1 = index;
}
x = curve_start_offset
+ globals.blend_outer_cachex2[DOWN][j][i];
y = y_offset
+ globals.blend_outer_cachey2[DOWN][j][i];
index = y * rowstride + x * bytes;
if (index != last_index2)
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
last_index2 = index;
}
}
}
static void
draw_bezier_line (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint steps,
gint *cx,
gint *cy)
{
gint i;
gint x, y;
gint index;
gint rowstride;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = cx[i];
y = cy[i];
index = y * rowstride + x * bytes;
DRAW_POINT (buffer, bufsize, index);
}
}
static void
darken_bezier_line (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint x_offset,
gint y_offset,
gint steps,
gint *cx,
gint *cy,
gdouble delta)
{
gint i;
gint x, y;
gint index;
gint last_index = -1;
gint rowstride;
gint temp;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = cx[i] + x_offset;
y = cy[i] + y_offset;
index = y * rowstride + x * bytes;
if (index != last_index)
{
DARKEN_POINT (buffer, bufsize, index, delta, temp);
last_index = index;
}
}
}
static void
lighten_bezier_line (guchar *buffer,
gint bufsize,
gint width,
gint bytes,
gint x_offset,
gint y_offset,
gint steps,
gint *cx,
gint *cy,
gdouble delta)
{
gint i;
gint x, y;
gint index;
gint last_index = -1;
gint rowstride;
gint temp;
rowstride = bytes * width;
for (i = 0; i < steps; i++)
{
x = cx[i] + x_offset;
y = cy[i] + y_offset;
index = y * rowstride + x * bytes;
if (index != last_index)
{
LIGHTEN_POINT (buffer, bufsize, index, delta, temp);
last_index = index;
}
}
}
static void
draw_bezier_vertical_border (guchar *buffer,
gint bufsize,
gint width,
gint height,
gint bytes,
gint x_offset,
gint xtiles,
gint ytiles,
gint blend_lines,
gdouble blend_amount,
gint steps)
{
gint i, j;
gint tile_width = width / xtiles;
gint tile_height = height / ytiles;
gint tile_height_eighth = tile_height / 8;
gint curve_start_offset = 3 * tile_height_eighth;
gint curve_end_offset = curve_start_offset + 2 * tile_height_eighth;
gint px[4], py[4];
gint y_offset = 0;
gdouble delta;
gdouble sigma = blend_amount / blend_lines;
gint right;
gint *cachex, *cachey;
cachex = g_new (gint, steps);
cachey = g_new (gint, steps);
for (i = 0; i < ytiles; i++)
{
right = g_random_int_range (0, 2);
px[0] = px[3] = x_offset;
px[1] = x_offset + WALL_XFACTOR2 * tile_width * FUDGE;
px[2] = x_offset + WALL_XFACTOR3 * tile_width * FUDGE;
py[0] = y_offset;
py[1] = y_offset + WALL_YCONS2 * tile_height;
py[2] = y_offset + WALL_YCONS3 * tile_height;
py[3] = y_offset + curve_start_offset;
if (right)
{
px[1] = x_offset - WALL_XFACTOR2 * tile_width;
px[2] = x_offset - WALL_XFACTOR3 * tile_width;
}
generate_bezier (px, py, steps, cachex, cachey);
draw_bezier_line (buffer, bufsize, width, bytes, steps, cachex, cachey);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
px[0] = -j - 1;
darken_bezier_line (buffer, bufsize, width, bytes, px[0], 0,
steps, cachex, cachey, delta);
px[0] = j + 1;
lighten_bezier_line (buffer, bufsize, width, bytes, px[0], 0,
steps, cachex, cachey, delta);
delta -= sigma;
}
if (right)
{
draw_right_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[RIGHT]);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
/* use to be -j -1 */
darken_right_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[RIGHT], delta, j);
/* use to be +j + 1 */
lighten_right_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[RIGHT], delta, j);
delta -= sigma;
}
}
else
{
draw_left_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[LEFT]);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
/* use to be -j -1 */
darken_left_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[LEFT], delta, j);
/* use to be -j - 1 */
lighten_left_bump (buffer, bufsize, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[LEFT], delta, j);
delta -= sigma;
}
}
px[0] = px[3] = x_offset;
px[1] = x_offset + WALL_XFACTOR2 * tile_width * FUDGE;
px[2] = x_offset + WALL_XFACTOR3 * tile_width * FUDGE;
py[0] = y_offset + curve_end_offset;
py[1] = y_offset + curve_end_offset + WALL_YCONS2 * tile_height;
py[2] = y_offset + curve_end_offset + WALL_YCONS3 * tile_height;
py[3] = globals.gridy[i];
if (right)
{
px[1] = x_offset - WALL_XFACTOR2 * tile_width;
px[2] = x_offset - WALL_XFACTOR3 * tile_width;
}
generate_bezier (px, py, steps, cachex, cachey);
draw_bezier_line (buffer, bufsize, width, bytes, steps, cachex, cachey);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
px[0] = -j - 1;
darken_bezier_line (buffer, bufsize, width, bytes, px[0], 0,
steps, cachex, cachey, delta);
px[0] = j + 1;
lighten_bezier_line (buffer, bufsize, width, bytes, px[0], 0,
steps, cachex, cachey, delta);
delta -= sigma;
}
y_offset = globals.gridy[i];
} /* for */
g_free(cachex);
g_free(cachey);
}
static void
draw_bezier_horizontal_border (guchar *buffer,
gint bufsize,
gint width,
gint height,
gint bytes,
gint y_offset,
gint xtiles,
gint ytiles,
gint blend_lines,
gdouble blend_amount,
gint steps)
{
gint i, j;
gint tile_width = width / xtiles;
gint tile_height = height / ytiles;
gint tile_width_eighth = tile_width / 8;
gint curve_start_offset = 3 * tile_width_eighth;
gint curve_end_offset = curve_start_offset + 2 * tile_width_eighth;
gint px[4], py[4];
gint x_offset = 0;
gdouble delta;
gdouble sigma = blend_amount / blend_lines;
gint up;
gint *cachex, *cachey;
cachex = g_new (gint, steps);
cachey = g_new (gint, steps);
for (i = 0; i < xtiles; i++)
{
up = g_random_int_range (0, 2);
px[0] = x_offset;
px[1] = x_offset + WALL_XCONS2 * tile_width;
px[2] = x_offset + WALL_XCONS3 * tile_width;
px[3] = x_offset + curve_start_offset;
py[0] = py[3] = y_offset;
py[1] = y_offset + WALL_YFACTOR2 * tile_height * FUDGE;
py[2] = y_offset + WALL_YFACTOR3 * tile_height * FUDGE;
if (!up)
{
py[1] = y_offset - WALL_YFACTOR2 * tile_height;
py[2] = y_offset - WALL_YFACTOR3 * tile_height;
}
generate_bezier (px, py, steps, cachex, cachey);
draw_bezier_line (buffer, bufsize, width, bytes, steps, cachex, cachey);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
py[0] = -j - 1;
darken_bezier_line (buffer, bufsize, width, bytes, 0, py[0],
steps, cachex, cachey, delta);
py[0] = j + 1;
lighten_bezier_line (buffer, bufsize, width, bytes, 0, py[0],
steps, cachex, cachey, delta);
delta -= sigma;
}
/* bumps */
if (up)
{
draw_up_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[UP]);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
/* use to be -j -1 */
darken_up_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[UP], delta, j);
/* use to be +j + 1 */
lighten_up_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[UP], delta, j);
delta -= sigma;
}
}
else
{
draw_down_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[DOWN]);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
/* use to be +j + 1 */
darken_down_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[DOWN], delta, j);
/* use to be -j -1 */
lighten_down_bump (buffer, bufsize, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[DOWN], delta, j);
delta -= sigma;
}
}
/* ending side wall line */
px[0] = x_offset + curve_end_offset;
px[1] = x_offset + curve_end_offset + WALL_XCONS2 * tile_width;
px[2] = x_offset + curve_end_offset + WALL_XCONS3 * tile_width;
px[3] = globals.gridx[i];
py[0] = py[3] = y_offset;
py[1] = y_offset + WALL_YFACTOR2 * tile_height * FUDGE;
py[2] = y_offset + WALL_YFACTOR3 * tile_height * FUDGE;
if (!up)
{
py[1] = y_offset - WALL_YFACTOR2 * tile_height;
py[2] = y_offset - WALL_YFACTOR3 * tile_height;
}
generate_bezier (px, py, steps, cachex, cachey);
draw_bezier_line (buffer, bufsize, width, bytes, steps, cachex, cachey);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
py[0] = -j - 1;
darken_bezier_line (buffer, bufsize, width, bytes, 0, py[0],
steps, cachex, cachey, delta);
py[0] = j + 1;
lighten_bezier_line (buffer, bufsize, width, bytes, 0, py[0],
steps, cachex, cachey, delta);
delta -= sigma;
}
x_offset = globals.gridx[i];
} /* for */
g_free(cachex);
g_free(cachey);
}
/********************************************************
GUI
********************************************************/
static gboolean
jigsaw_dialog (PikaProcedure *procedure,
GObject *config,
PikaDrawable *drawable)
{
GtkWidget *dialog;
GtkWidget *preview;
GtkWidget *frame;
GtkWidget *scale;
GtkListStore *store;
gboolean run;
pika_ui_init (PLUG_IN_BINARY);
dialog = pika_procedure_dialog_new (procedure,
PIKA_PROCEDURE_CONFIG (config),
_("Jigsaw"));
pika_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
pika_window_set_transient (GTK_WINDOW (dialog));
preview = pika_drawable_preview_new_from_drawable (drawable);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
preview, TRUE, TRUE, 0);
gtk_widget_set_margin_bottom (preview, 12);
gtk_widget_show (preview);
/* xtiles */
scale = pika_procedure_dialog_get_scale_entry (PIKA_PROCEDURE_DIALOG (dialog),
"x", 1.0);
/* ytiles */
scale = pika_procedure_dialog_get_scale_entry (PIKA_PROCEDURE_DIALOG (dialog),
"y", 1.0);
gtk_widget_set_margin_bottom (scale, 12);
pika_procedure_dialog_get_label (PIKA_PROCEDURE_DIALOG (dialog),
"num-tiles-label", _("Number of Tiles"));
pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"num-tiles-vbox", "x", "y", NULL);
pika_procedure_dialog_fill_frame (PIKA_PROCEDURE_DIALOG (dialog),
"num-tiles-frame", "num-tiles-label",
FALSE, "num-tiles-vbox");
/* number of blending lines */
scale = pika_procedure_dialog_get_scale_entry (PIKA_PROCEDURE_DIALOG (dialog),
"blend-lines", 1.0);
/* blending amount */
scale = pika_procedure_dialog_get_scale_entry (PIKA_PROCEDURE_DIALOG (dialog),
"blend-amount", 1.0);
gtk_widget_set_margin_bottom (scale, 12);
pika_procedure_dialog_get_label (PIKA_PROCEDURE_DIALOG (dialog),
"bevel-label", _("Bevel Edges"));
pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"bevel-vbox", "blend-lines", "blend-amount",
NULL);
pika_procedure_dialog_fill_frame (PIKA_PROCEDURE_DIALOG (dialog),
"bevel-frame", "bevel-label", FALSE,
"bevel-vbox");
/* frame for primitive radio buttons */
store = pika_int_store_new (_("Square"), BEZIER_1,
_("Curved"), BEZIER_2,
NULL);
frame = pika_procedure_dialog_get_int_radio (PIKA_PROCEDURE_DIALOG (dialog),
"style", PIKA_INT_STORE (store));
gtk_widget_set_margin_bottom (frame, 12);
pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"jigsaw-vbox", "num-tiles-frame",
"bevel-frame", "style", NULL);
g_object_set_data (config, "drawable", drawable);
g_signal_connect (preview, "invalidated",
G_CALLBACK (jigsaw_preview),
config);
g_signal_connect_swapped (config, "notify",
G_CALLBACK (pika_preview_invalidate),
preview);
pika_procedure_dialog_fill (PIKA_PROCEDURE_DIALOG (dialog),
"jigsaw-vbox", NULL);
gtk_widget_show (dialog);
run = pika_procedure_dialog_run (PIKA_PROCEDURE_DIALOG (dialog));
gtk_widget_destroy (dialog);
return run;
}