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gimp/plug-ins/common/jigsaw.c

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Import Upstream version 2.10.32
2022-11-23 10:54:48 +08:00
/*
* jigsaw - a plug-in for GIMP
*
* 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 <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-jigsaw"
#define PLUG_IN_BINARY "jigsaw"
#define PLUG_IN_ROLE "gimp-jigsaw"
typedef enum
{
BEZIER_1,
BEZIER_2
} style_t;
typedef enum
{
LEFT,
RIGHT,
UP,
DOWN
} bump_t;
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static void jigsaw (guint32 drawable_id,
GimpPreview *preview);
static void jigsaw_preview (gpointer drawable_id,
GimpPreview *preview);
static gboolean jigsaw_dialog (guint32 drawable_id);
static void draw_jigsaw (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, gint *py, gdouble delta);
static void lighten_vertical_line (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint *px, gint *py, gdouble delta);
static void darken_horizontal_line (guchar *buffer, gint bufsize,
gint width, gint bytes,
gint *px, gint *py, gdouble delta);
static void lighten_horizontal_line(guchar *buffer, gint bufsize,
gint width, gint bytes,
gint *px, gint *py, 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 (void);
static void free_cache (void);
static void init_right_bump (gint width, gint height);
static void init_left_bump (gint width, gint height);
static void init_up_bump (gint width, gint height);
static void init_down_bump (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);
static void check_config (gint width, gint height);
#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 SCALE_WIDTH 200
#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)
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL,
NULL,
query,
run
};
struct config_tag
{
gint x;
gint y;
style_t style;
gint blend_lines;
gdouble blend_amount;
};
typedef struct config_tag config_t;
static config_t config =
{
5,
5,
BEZIER_1,
3,
0.5
};
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 globals_tag globals_t;
static globals_t globals;
MAIN ()
static void
query (void)
{
static const GimpParamDef args[] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
{ GIMP_PDB_IMAGE, "image", "Input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
{ GIMP_PDB_INT32, "x", "Number of tiles across > 0" },
{ GIMP_PDB_INT32, "y", "Number of tiles down > 0" },
{ GIMP_PDB_INT32, "style", "The style/shape of the jigsaw puzzle { 0, 1 }" },
{ GIMP_PDB_INT32, "blend-lines", "Number of lines for shading bevels >= 0" },
{ GIMP_PDB_FLOAT, "blend-amount", "The power of the light highlights 0 =< 5" }
};
gimp_install_procedure (PLUG_IN_PROC,
N_("Add a jigsaw-puzzle pattern to the image"),
"Jigsaw puzzle look",
"Nigel Wetten",
"Nigel Wetten",
"May 2000",
N_("_Jigsaw..."),
"RGB*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Render/Pattern");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpRunMode run_mode;
guint32 drawable_id;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
INIT_I18N ();
gegl_init (NULL, NULL);
run_mode = param[0].data.d_int32;
drawable_id = param[2].data.d_drawable;
switch (run_mode)
{
case GIMP_RUN_NONINTERACTIVE:
if (nparams == 8)
{
config.x = param[3].data.d_int32;
config.y = param[4].data.d_int32;
config.style = param[5].data.d_int32;
config.blend_lines = param[6].data.d_int32;
config.blend_amount = param[7].data.d_float;
jigsaw (drawable_id, NULL);
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
break;
case GIMP_RUN_INTERACTIVE:
gimp_get_data (PLUG_IN_PROC, &config);
if (! jigsaw_dialog (drawable_id))
{
status = GIMP_PDB_CANCEL;
break;
}
gimp_progress_init (_("Assembling jigsaw"));
jigsaw (drawable_id, NULL);
gimp_set_data (PLUG_IN_PROC, &config, sizeof(config_t));
gimp_displays_flush ();
break;
case GIMP_RUN_WITH_LAST_VALS:
gimp_get_data (PLUG_IN_PROC, &config);
jigsaw (drawable_id, NULL);
gimp_displays_flush ();
} /* switch */
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
}
static void
jigsaw (guint32 drawable_id,
GimpPreview *preview)
{
GeglBuffer *gegl_buffer = NULL;
const Babl *format = NULL;
guchar *buffer;
gint width;
gint height;
gint bytes;
gint buffer_size;
if (preview)
{
gimp_preview_get_size (preview, &width, &height);
buffer = gimp_drawable_get_thumbnail_data (drawable_id,
&width, &height, &bytes);
buffer_size = bytes * width * height;
}
else
{
gegl_buffer = gimp_drawable_get_buffer (drawable_id);
width = gimp_drawable_width (drawable_id);
height = gimp_drawable_height (drawable_id);
if (gimp_drawable_has_alpha (drawable_id))
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 = 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);
}
check_config (width, height);
globals.steps[LEFT] = globals.steps[RIGHT] = globals.steps[UP]
= globals.steps[DOWN] = (config.x < config.y) ?
(width / config.x * 2) : (height / config.y * 2);
malloc_cache ();
draw_jigsaw (buffer, buffer_size, width, height, bytes, preview != NULL);
free_cache ();
/* cleanup */
if (preview)
{
gimp_preview_draw_buffer (preview, buffer, width * bytes);
}
else
{
gegl_buffer = gimp_drawable_get_shadow_buffer (drawable_id);
gegl_buffer_set (gegl_buffer, GEGL_RECTANGLE (0, 0, width, height), 0,
format, buffer,
GEGL_AUTO_ROWSTRIDE);
g_object_unref (gegl_buffer);
gimp_drawable_merge_shadow (drawable_id, TRUE);
gimp_drawable_update (drawable_id, 0, 0, width, height);
}
g_free (buffer);
}
static void
jigsaw_preview (gpointer drawable_id,
GimpPreview *preview)
{
jigsaw (GPOINTER_TO_INT (drawable_id), 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 (guchar *buffer,
gint bufsize,
gint width,
gint height,
gint bytes,
gboolean preview_mode)
{
gint i;
gint *x, *y;
gint xtiles = config.x;
gint ytiles = config.y;
gint xlines = xtiles - 1;
gint ylines = ytiles - 1;
gint blend_lines = config.blend_lines;
gdouble blend_amount = config.blend_amount;
gint steps = globals.steps[RIGHT];
style_t style = config.style;
gint progress_total = xlines + ylines - 1;
g_return_if_fail (buffer != NULL);
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 (width, height);
init_left_bump (width, height);
init_up_bump (width, height);
init_down_bump (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)
gimp_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)
gimp_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)
gimp_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)
gimp_progress_update ((gdouble) (i + xlines) / (gdouble) progress_total);
}
}
else
{
g_printerr ("draw_jigsaw: bad style\n");
gimp_quit ();
}
gimp_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 (void)
{
gint i, j;
gint blend_lines = config.blend_lines;
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 (void)
{
gint i, j;
gint blend_lines = config.blend_lines;
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 width,
gint height)
{
gint i;
gint xtiles = config.x;
gint ytiles = config.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;
gint blend_lines = config.blend_lines;
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 width,
gint height)
{
gint i;
gint xtiles = config.x;
gint ytiles = config.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;
gint blend_lines = config.blend_lines;
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 width,
gint height)
{
gint i;
gint xtiles = config.x;
gint ytiles = config.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;
gint blend_lines = config.blend_lines;
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 width,
gint height)
{
gint i;
gint xtiles = config.x;
gint ytiles = config.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;
gint blend_lines = config.blend_lines;
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);
}
static void
check_config (gint width,
gint height)
{
gint tile_width, tile_height;
gint tile_width_limit, tile_height_limit;
if (config.x < 1)
{
config.x = 1;
}
if (config.y < 1)
{
config.y = 1;
}
if (config.blend_amount < 0)
{
config.blend_amount = 0;
}
if (config.blend_amount > 5)
{
config.blend_amount = 5;
}
tile_width = width / config.x;
tile_height = height / config.y;
tile_width_limit = 0.4 * tile_width;
tile_height_limit = 0.4 * tile_height;
if ((config.blend_lines > tile_width_limit)
|| (config.blend_lines > tile_height_limit))
{
config.blend_lines = MIN(tile_width_limit, tile_height_limit);
}
}
/********************************************************
GUI
********************************************************/
static gboolean
jigsaw_dialog (guint32 drawable_id)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *preview;
GtkSizeGroup *group;
GtkWidget *frame;
GtkWidget *rbutton1;
GtkWidget *rbutton2;
GtkWidget *table;
GtkObject *adj;
gboolean run;
gimp_ui_init (PLUG_IN_BINARY, TRUE);
dialog = gimp_dialog_new (_("Jigsaw"), 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));
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
main_vbox, TRUE, TRUE, 0);
gtk_widget_show (main_vbox);
preview = gimp_aspect_preview_new_from_drawable_id (drawable_id);
gtk_box_pack_start (GTK_BOX (main_vbox), preview, TRUE, TRUE, 0);
gtk_widget_show (preview);
g_signal_connect_swapped (preview, "invalidated",
G_CALLBACK (jigsaw_preview),
GINT_TO_POINTER (drawable_id));
frame = gimp_frame_new (_("Number of Tiles"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
table = gtk_table_new (2, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_container_add (GTK_CONTAINER (frame), table);
group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
/* xtiles */
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("_Horizontal:"), SCALE_WIDTH, 0,
config.x, MIN_XTILES, MAX_XTILES, 1.0, 4.0, 0,
TRUE, 0, 0,
_("Number of pieces going across"), NULL);
gtk_size_group_add_widget (group, GIMP_SCALE_ENTRY_LABEL (adj));
g_object_unref (group);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&config.x);
g_signal_connect_swapped (adj, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
/* ytiles */
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("_Vertical:"), SCALE_WIDTH, 0,
config.y, MIN_YTILES, MAX_YTILES, 1.0, 4.0, 0,
TRUE, 0, 0,
_("Number of pieces going down"), NULL);
gtk_size_group_add_widget (group, GIMP_SCALE_ENTRY_LABEL (adj));
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&config.y);
g_signal_connect_swapped (adj, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_widget_show (table);
gtk_widget_show (frame);
frame = gimp_frame_new (_("Bevel Edges"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
table = gtk_table_new (2, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_container_add (GTK_CONTAINER (frame), table);
/* number of blending lines */
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("_Bevel width:"), SCALE_WIDTH, 4,
config.blend_lines,
MIN_BLEND_LINES, MAX_BLEND_LINES, 1.0, 2.0, 0,
TRUE, 0, 0,
_("Degree of slope of each piece's edge"), NULL);
gtk_size_group_add_widget (group, GIMP_SCALE_ENTRY_LABEL (adj));
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&config.blend_lines);
g_signal_connect_swapped (adj, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
/* blending amount */
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("H_ighlight:"), SCALE_WIDTH, 4,
config.blend_amount,
MIN_BLEND_AMOUNT, MAX_BLEND_AMOUNT, 0.05, 0.1, 2,
TRUE, 0, 0,
_("The amount of highlighting on the edges "
"of each piece"), NULL);
gtk_size_group_add_widget (group, GIMP_SCALE_ENTRY_LABEL (adj));
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&config.blend_amount);
g_signal_connect_swapped (adj, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_widget_show (table);
gtk_widget_show (frame);
/* frame for primitive radio buttons */
frame = gimp_int_radio_group_new (TRUE, _("Jigsaw Style"),
G_CALLBACK (gimp_radio_button_update),
&config.style, config.style,
_("_Square"), BEZIER_1, &rbutton1,
_("C_urved"), BEZIER_2, &rbutton2,
NULL);
gimp_help_set_help_data (rbutton1, _("Each piece has straight sides"), NULL);
gimp_help_set_help_data (rbutton2, _("Each piece has curved sides"), NULL);
g_signal_connect_swapped (rbutton1, "toggled",
G_CALLBACK (gimp_preview_invalidate),
preview);
g_signal_connect_swapped (rbutton2, "toggled",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
gtk_widget_show (dialog);
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dialog);
return run;
}