gimp/plug-ins/common/jigsaw.c

2482 lines
65 KiB
C

/*
* jigsaw - a plug-in for the 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Contact info: nigel@cs.nwu.edu
*
* Version: 1.0.0
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
typedef enum {BEZIER_1, BEZIER_2} style_t;
typedef enum {LEFT, RIGHT, UP, DOWN} bump_t;
static void query (void);
static void run (gchar *name,
gint nparams,
GParam *param,
gint *nreturn_vals,
GParam **return_vals);
static gint jigsaw (void);
static void dialog_box (void);
static void run_callback (GtkWidget *widget, gpointer data);
static void check_button_callback (GtkWidget *widget, gpointer data);
static void draw_jigsaw(guchar *buffer, gint width, gint height, gint bytes);
static void draw_vertical_border(guchar *buffer, 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 width,
gint bytes, gint y_offset, gint xtiles,
gint blend_lines, gdouble blend_amount);
static void draw_vertical_line(guchar *buffer, gint width, gint bytes,
gint px[2], gint py[2]);
static void draw_horizontal_line(guchar *buffer, gint width, gint bytes,
gint px[2], gint py[2]);
static void darken_vertical_line(guchar *buffer, gint width, gint bytes,
gint *px, gint *py, gdouble delta);
static void lighten_vertical_line(guchar *buffer, gint width, gint bytes,
gint *px, gint *py, gdouble delta);
static void darken_horizontal_line(guchar *buffer, gint width, gint bytes,
gint *px, gint *py, gdouble delta);
static void lighten_horizontal_line(guchar *buffer, gint width, gint bytes,
gint *px, gint *py, gdouble delta);
static void draw_right_bump(guchar *buffer, gint width, gint bytes,
gint x_offset, gint curve_start_offset,
gint steps);
static void draw_left_bump(guchar *buffer, gint width, gint bytes,
gint x_offset, gint curve_start_offset,
gint steps);
static void draw_up_bump(guchar *buffer, gint width, gint bytes,
gint y_offset, gint curve_start_offset,
gint steps);
static void draw_down_bump(guchar *buffer, gint width, gint bytes,
gint y_offset, gint curve_start_offset,
gint steps);
static void darken_right_bump(guchar *buffer, 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 width, gint bytes,
gint x_offset, gint curve_start_offset,
gint steps, gdouble delta, gint counter);
static void darken_left_bump(guchar *buffer, 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 width, gint bytes,
gint x_offset, gint curve_start_offset,
gint steps, gdouble delta, gint counter);
static void darken_up_bump(guchar *buffer, 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 width, gint bytes,
gint y_offset, gint curve_start_offset,
gint steps, gdouble delta, gint counter);
static void darken_down_bump(guchar *buffer, 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 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 width, gint bytes,
gint steps, gint *cx, gint *cy);
static void darken_bezier_line(guchar *buffer, 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 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 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 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 PLUG_IN_NAME "jigsaw"
#define PLUG_IN_STORAGE "jigsaw-storage"
#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 ENTRY_WIDTH 40
#define DRAW_POINT(buffer, index) \
do { \
buffer[index] = BLACK_R; \
buffer[index+1] = BLACK_G; \
buffer[index+2] = BLACK_B; \
} while (0)
#define DARKEN_POINT(buffer, index, delta, temp) \
do { \
temp = buffer[index]; \
temp -= buffer[index] * delta; \
if (temp < MIN_VALUE) temp = MIN_VALUE; \
buffer[index] = temp; \
temp = buffer[index+1]; \
temp -= buffer[index+1] * delta; \
if (temp < MIN_VALUE) temp = MIN_VALUE; \
buffer[index+1] = temp; \
temp = buffer[index+2]; \
temp -= buffer[index+2] * delta; \
if (temp < MIN_VALUE) temp = MIN_VALUE; \
buffer[index+2] = temp; \
} while (0)
#define LIGHTEN_POINT(buffer, index, delta, temp) \
do { \
temp = buffer[index] * delta; \
temp += buffer[index]; \
if (temp > MAX_VALUE) temp = MAX_VALUE; \
buffer[index] = temp; \
temp = buffer[index+1] * delta; \
temp += buffer[index+1]; \
if (temp > MAX_VALUE) temp = MAX_VALUE; \
buffer[index+1] = temp; \
temp = buffer[index+2] * delta; \
temp += buffer[index+2]; \
if (temp > MAX_VALUE) temp = MAX_VALUE; \
buffer[index+2] = temp; \
} while (0)
GPlugInInfo 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
{
GDrawable *drawable;
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];
gint dialog_result;
gint tooltips;
};
typedef struct globals_tag globals_t;
static globals_t globals =
{
0,
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0},
0,
0,
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0},
-1,
1
};
MAIN ()
static void
query (void)
{
static GParamDef args[] =
{
{ PARAM_INT32, "run_mode", "Interactive, Non-interactive, Last-Vals"},
{ PARAM_IMAGE, "image", "Input image"},
{ PARAM_DRAWABLE, "drawable", "Input drawable"},
{ PARAM_INT32, "x", "Number of tiles across > 0"},
{ PARAM_INT32, "y", "Number of tiles down > 0"},
{ PARAM_INT32, "style", "The style/shape of the jigsaw puzzle, 0 or 1"},
{ PARAM_INT32, "blend_lines", "Number of lines for shading bevels >= 0"},
{ PARAM_FLOAT, "blend_amount", "The power of the light highlights 0 =< 5"}
};
static GParamDef *return_vals = NULL;
static gint nargs = sizeof(args) / sizeof(args[0]);
static gint nreturn_vals = 0;
INIT_I18N();
gimp_install_procedure ("plug_in_jigsaw",
"Renders a jigsaw puzzle look",
"Jigsaw puzzle look",
"Nigel Wetten",
"Nigel Wetten",
"1998",
N_("<Image>/Filters/Render/Pattern/Jigsaw..."),
"RGB*",
PROC_PLUG_IN,
nargs, nreturn_vals,
args, return_vals);
}
static void
run (gchar *name,
gint nparams,
GParam *param,
gint *nreturn_vals,
GParam **return_vals)
{
static GParam values[1];
GDrawable *drawable;
GRunModeType run_mode;
GStatusType status = STATUS_SUCCESS;
run_mode = param[0].data.d_int32;
drawable = gimp_drawable_get(param[2].data.d_drawable);
globals.drawable = drawable;
gimp_tile_cache_ntiles(drawable->width / gimp_tile_width() + 1);
switch (run_mode)
{
case RUN_NONINTERACTIVE:
INIT_I18N();
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;
if (jigsaw() == -1)
{
status = STATUS_EXECUTION_ERROR;
}
}
else
{
status = STATUS_CALLING_ERROR;
}
break;
case RUN_INTERACTIVE:
INIT_I18N_UI();
gimp_get_data("plug_in_jigsaw", &config);
gimp_get_data(PLUG_IN_STORAGE, &globals.tooltips);
dialog_box();
if (globals.dialog_result == -1)
{
status = STATUS_EXECUTION_ERROR;
break;
}
gimp_progress_init( _("Assembling Jigsaw"));
if (jigsaw() == -1)
{
status = STATUS_CALLING_ERROR;
break;
}
gimp_set_data("plug_in_jigsaw", &config, sizeof(config_t));
gimp_set_data(PLUG_IN_STORAGE, &globals.tooltips,
sizeof(globals.tooltips));
gimp_displays_flush();
break;
case RUN_WITH_LAST_VALS:
INIT_I18N();
gimp_get_data("plug_in_jigsaw", &config);
if (jigsaw() == -1)
{
status = STATUS_EXECUTION_ERROR;
gimp_message("An execution error occured.");
}
else
{
gimp_displays_flush();
}
} /* switch */
gimp_drawable_detach(drawable);
*nreturn_vals = 1;
*return_vals = values;
values[0].type = PARAM_STATUS;
values[0].data.d_status = status;
return;
}
static gint
jigsaw (void)
{
GPixelRgn src_pr, dest_pr;
guchar *buffer;
GDrawable *drawable = globals.drawable;
gint width = drawable->width;
gint height = drawable->height;
gint bytes = drawable->bpp;
gint buffer_size = bytes * width * height;
srand((gint)NULL);
/* setup image buffer */
gimp_pixel_rgn_init(&src_pr, drawable, 0, 0, width, height, FALSE, FALSE);
gimp_pixel_rgn_init(&dest_pr, drawable, 0, 0, width, height, TRUE, TRUE);
buffer = g_malloc(buffer_size);
gimp_pixel_rgn_get_rect(&src_pr, buffer, 0, 0, width, height);
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, width, height, bytes);
free_cache();
/* cleanup */
gimp_pixel_rgn_set_rect(&dest_pr, buffer, 0, 0, width, height);
gimp_drawable_flush(drawable);
gimp_drawable_merge_shadow(drawable->id, TRUE);
gimp_drawable_update(drawable->id, 0, 0, width, height);
g_free(buffer);
return 0;
}
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 */
return;
}
static void
draw_jigsaw (guchar *buffer,
gint width,
gint height,
gint bytes)
{
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;
globals.gridx = g_malloc(sizeof(gint) * xtiles);
globals.gridy = g_malloc(sizeof(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, width, height, bytes, x[i], ytiles,
blend_lines, blend_amount);
gimp_progress_update((gdouble) i / (gdouble) progress_total);
}
for (i = 0; i < ylines; i++)
{
draw_horizontal_border(buffer, width, bytes, y[i], xtiles,
blend_lines, blend_amount);
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, width, height, bytes, x[i],
xtiles, ytiles, blend_lines,
blend_amount, steps);
gimp_progress_update((gdouble) i / (gdouble) progress_total);
}
for (i = 0; i < ylines; i++)
{
draw_bezier_horizontal_border(buffer, width, height, bytes, y[i],
xtiles, ytiles, blend_lines,
blend_amount, steps);
gimp_progress_update((gdouble) (i + xlines)
/ (gdouble) progress_total);
}
}
else
{
printf("draw_jigsaw: bad style\n");
exit(1);
}
g_free(globals.gridx);
g_free(globals.gridy);
return;
}
static void
draw_vertical_border (guchar *buffer,
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;
bump_t style_index;
for (i = 0; i < ytiles; i++)
{
right = rand() & 1;
if (right)
{
style_index = RIGHT;
}
else
{
style_index = LEFT;
}
/* 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, 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, width, bytes, px, dy, delta);
px[0] = x_offset + j + 1;
lighten_vertical_line(buffer, width, bytes, px, ly, delta);
delta -= sigma;
}
/* top half of curve */
if (right)
{
draw_right_bump(buffer, 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, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[RIGHT], delta, j);
/* use to be +j + 1 */
lighten_right_bump(buffer, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[RIGHT], delta, j);
delta -= sigma;
}
}
else
{
draw_left_bump(buffer, 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, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[LEFT], delta, j);
/* use to be -j - 1 */
lighten_left_bump(buffer, 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, 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, width, bytes, px, dy, delta);
px[0] = x_offset + j + 1;
lighten_vertical_line(buffer, width, bytes, px, ly, delta);
delta -= sigma;
}
y_offset = globals.gridy[i];
} /* for */
return;
}
/* assumes RGB* */
static void
draw_horizontal_border (guchar *buffer,
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 = rand() & 1;
/* 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, 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, width, bytes, dx, py, delta);
py[0] = y_offset + j + 1;
lighten_horizontal_line(buffer, width, bytes, lx, py, delta);
delta -= sigma;
}
if (up)
{
draw_up_bump(buffer, 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, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[UP], delta, j);
/* use to be +j + 1 */
lighten_up_bump(buffer, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[UP], delta, j);
delta -= sigma;
}
}
else
{
draw_down_bump(buffer, 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, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[DOWN], delta, j);
/* use to be -j -1 */
lighten_down_bump(buffer, 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, 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, width, bytes, dx, py, delta);
py[0] = y_offset + j + 1;
lighten_horizontal_line(buffer, 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 width,
gint bytes,
gint px[2],
gint py[2])
{
gint i;
gint rowstride = bytes * width;
gint index = px[0] * bytes + rowstride * py[0];
gint length = py[1] - py[0] + 1;
for (i = 0; i < length; i++)
{
DRAW_POINT(buffer, index);
index += rowstride;
}
}
/* assumes going left to right */
static void
draw_horizontal_line (guchar *buffer,
gint width,
gint bytes,
gint px[2],
gint py[2])
{
gint i;
gint rowstride = bytes * width;
gint index = px[0] * bytes + py[0] * rowstride;
gint length = px[1] - px[0] + 1;
for (i = 0; i < length; i++)
{
DRAW_POINT(buffer, index);
index += bytes;
}
}
static void
draw_right_bump (guchar *buffer,
gint width,
gint bytes,
gint x_offset,
gint curve_start_offset,
gint steps)
{
gint i;
gint x, y;
gint index;
gint rowstride = width * bytes;
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, index);
x = *(globals.cachex2[RIGHT] + i) + x_offset;
y = *(globals.cachey2[RIGHT] + i) + curve_start_offset;
index = y * rowstride + x * bytes;
DRAW_POINT(buffer, index);
}
}
static void
draw_left_bump (guchar *buffer,
gint width,
gint bytes,
gint x_offset,
gint curve_start_offset,
gint steps)
{
gint i;
gint x, y;
gint index;
gint rowstride = width * bytes;
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, index);
x = *(globals.cachex2[LEFT] + i) + x_offset;
y = *(globals.cachey2[LEFT] + i) + curve_start_offset;
index = y * rowstride + x * bytes;
DRAW_POINT(buffer, index);
}
}
static void
draw_up_bump (guchar *buffer,
gint width,
gint bytes,
gint y_offset,
gint curve_start_offset,
gint steps)
{
gint i;
gint x, y;
gint index;
gint rowstride = width * bytes;
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, index);
x = *(globals.cachex2[UP] + i) + curve_start_offset;
y = *(globals.cachey2[UP] + i) + y_offset;
index = y * rowstride + x * bytes;
DRAW_POINT(buffer, index);
}
}
static void
draw_down_bump (guchar *buffer,
gint width,
gint bytes,
gint y_offset,
gint curve_start_offset,
gint steps)
{
gint i;
gint x, y;
gint index;
gint rowstride = width * bytes;
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, index);
x = *(globals.cachex2[DOWN] + i) + curve_start_offset;
y = *(globals.cachey2[DOWN] + i) + y_offset;
index = y * rowstride + x * bytes;
DRAW_POINT(buffer, index);
}
}
static void
malloc_cache (void)
{
gint i, j;
gint blend_lines = config.blend_lines;
gint length = blend_lines * sizeof(gint *);
for (i = 0; i < 4; i++)
{
gint steps_length = globals.steps[i] * sizeof(gint);
globals.cachex1[i] = g_malloc (steps_length);
globals.cachex2[i] = g_malloc (steps_length);
globals.cachey1[i] = g_malloc (steps_length);
globals.cachey2[i] = g_malloc (steps_length);
globals.blend_outer_cachex1[i] = g_malloc (length);
globals.blend_outer_cachex2[i] = g_malloc (length);
globals.blend_outer_cachey1[i] = g_malloc (length);
globals.blend_outer_cachey2[i] = g_malloc (length);
globals.blend_inner_cachex1[i] = g_malloc (length);
globals.blend_inner_cachex2[i] = g_malloc (length);
globals.blend_inner_cachey1[i] = g_malloc (length);
globals.blend_inner_cachey2[i] = g_malloc (length);
for (j = 0; j < blend_lines; j++)
{
*(globals.blend_outer_cachex1[i] + j) = g_malloc (steps_length);
*(globals.blend_outer_cachex2[i] + j) = g_malloc (steps_length);
*(globals.blend_outer_cachey1[i] + j) = g_malloc (steps_length);
*(globals.blend_outer_cachey2[i] + j) = g_malloc (steps_length);
*(globals.blend_inner_cachex1[i] + j) = g_malloc (steps_length);
*(globals.blend_inner_cachex2[i] + j) = g_malloc (steps_length);
*(globals.blend_inner_cachey1[i] + j) = g_malloc (steps_length);
*(globals.blend_inner_cachey2[i] + j) = g_malloc (steps_length);
}
}
}
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));
}
return;
}
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));
}
return;
}
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));
}
return;
}
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 width,
gint bytes,
gint px[2],
gint py[2],
gdouble delta)
{
gint i;
gint rowstride = width * bytes;
gint index = px[0] * bytes + py[0] * rowstride;
gint length = py[1] - py[0] + 1;
gint temp;
for (i = 0; i < length; i++)
{
DARKEN_POINT(buffer, 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 width,
gint bytes,
gint px[2],
gint py[2],
gdouble delta)
{
gint i;
gint rowstride = width * bytes;
gint index = px[0] * bytes + py[0] * rowstride;
gint length = py[1] - py[0] + 1;
gint temp;
for (i = 0; i < length; i++)
{
LIGHTEN_POINT(buffer, 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 width,
gint bytes,
gint px[2],
gint py[2],
gdouble delta)
{
gint i;
gint rowstride = width * bytes;
gint index = px[0] * bytes + py[0] * rowstride;
gint length = px[1] - px[0] + 1;
gint temp;
for (i = 0; i < length; i++)
{
DARKEN_POINT(buffer, 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 width,
gint bytes,
gint px[2],
gint py[2],
gdouble delta)
{
gint i;
gint rowstride = width * bytes;
gint index = px[0] * bytes + py[0] * rowstride;
gint length = px[1] - px[0] + 1;
gint temp;
for (i = 0; i < length; i++)
{
LIGHTEN_POINT(buffer, index, delta, temp);
index += bytes;
}
}
static void
darken_right_bump (guchar *buffer,
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 = width * bytes;
gint temp;
gint j = counter;
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, index, delta, temp);
}
else
{
DARKEN_POINT(buffer, 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, index, delta, temp);
last_index2 = index;
}
}
}
static void
lighten_right_bump (guchar *buffer,
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 = width * bytes;
gint temp;
gint j = counter;
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, index, delta, temp);
}
else
{
LIGHTEN_POINT(buffer, 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, index, delta, temp);
last_index2 = index;
}
}
}
static void
darken_left_bump (guchar *buffer,
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 = width * bytes;
gint temp;
gint j = counter;
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, 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, index, delta, temp);
}
else
{
LIGHTEN_POINT(buffer, index, delta, temp);
}
last_index2 = index;
}
}
}
static void
lighten_left_bump (guchar *buffer,
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 = width * bytes;
gint temp;
gint j = counter;
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, 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, index, delta, temp);
}
else
{
DARKEN_POINT(buffer, index, delta, temp);
}
last_index2 = index;
}
}
}
static void
darken_up_bump (guchar *buffer,
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 = width * bytes;
gint temp;
gint j = counter;
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, 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, index, delta, temp);
}
else
{
LIGHTEN_POINT(buffer, index, delta, temp);
}
last_index2 = index;
}
}
}
static void
lighten_up_bump (guchar *buffer,
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 = width * bytes;
gint temp;
gint j = counter;
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, 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, index, delta, temp);
}
else
{
DARKEN_POINT(buffer, index, delta, temp);
}
last_index2 = index;
}
}
}
static void
darken_down_bump (guchar *buffer,
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 = width * bytes;
gint temp;
gint j = counter;
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, index, delta, temp);
}
else
{
DARKEN_POINT(buffer, 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, index, delta, temp);
last_index2 = index;
}
}
}
static void
lighten_down_bump (guchar *buffer,
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 = width * bytes;
gint temp;
gint j = counter;
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, index, delta, temp);
}
else
{
LIGHTEN_POINT(buffer, 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, index, delta, temp);
last_index2 = index;
}
}
}
static void
draw_bezier_line (guchar *buffer,
gint width,
gint bytes,
gint steps,
gint *cx,
gint *cy)
{
gint i;
gint x, y;
gint index;
gint rowstride = width * bytes;
for (i = 0; i < steps; i++)
{
x = cx[i];
y = cy[i];
index = y * rowstride + x * bytes;
DRAW_POINT(buffer, index);
}
}
static void
darken_bezier_line (guchar *buffer,
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 = width * bytes;
gint temp;
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, index, delta, temp);
last_index = index;
}
}
}
static void
lighten_bezier_line (guchar *buffer,
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 = width * bytes;
gint temp;
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, index, delta, temp);
last_index = index;
}
}
}
static void
draw_bezier_vertical_border (guchar *buffer,
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;
bump_t style_index;
gint *cachex, *cachey;
cachex = g_malloc(steps * sizeof(gint));
cachey = g_malloc(steps * sizeof(gint));
for (i = 0; i < ytiles; i++)
{
right = rand() & 1;
if (right)
{
style_index = RIGHT;
}
else
{
style_index = LEFT;
}
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, width, bytes, steps, cachex, cachey);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
px[0] = -j - 1;
darken_bezier_line(buffer, width, bytes, px[0], 0,
steps, cachex, cachey, delta);
px[0] = j + 1;
lighten_bezier_line(buffer, width, bytes, px[0], 0,
steps, cachex, cachey, delta);
delta -= sigma;
}
if (right)
{
draw_right_bump(buffer, 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, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[RIGHT], delta, j);
/* use to be +j + 1 */
lighten_right_bump(buffer, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[RIGHT], delta, j);
delta -= sigma;
}
}
else
{
draw_left_bump(buffer, 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, width, bytes, x_offset,
y_offset + curve_start_offset,
globals.steps[LEFT], delta, j);
/* use to be -j - 1 */
lighten_left_bump(buffer, 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, width, bytes, steps, cachex, cachey);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
px[0] = -j - 1;
darken_bezier_line(buffer, width, bytes, px[0], 0,
steps, cachex, cachey, delta);
px[0] = j + 1;
lighten_bezier_line(buffer, 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 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;
style_t style_index;
gint *cachex, *cachey;
cachex = g_malloc(steps * sizeof(gint));
cachey = g_malloc(steps * sizeof(gint));
for (i = 0; i < xtiles; i++)
{
up = rand() & 1;
if (up)
{
style_index = UP;
}
else
{
style_index = DOWN;
}
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, width, bytes, steps, cachex, cachey);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
py[0] = -j - 1;
darken_bezier_line(buffer, width, bytes, 0, py[0],
steps, cachex, cachey, delta);
py[0] = j + 1;
lighten_bezier_line(buffer, width, bytes, 0, py[0],
steps, cachex, cachey, delta);
delta -= sigma;
}
/* bumps */
if (up)
{
draw_up_bump(buffer, 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, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[UP], delta, j);
/* use to be +j + 1 */
lighten_up_bump(buffer, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[UP], delta, j);
delta -= sigma;
}
}
else
{
draw_down_bump(buffer, 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, width, bytes, y_offset,
x_offset + curve_start_offset,
globals.steps[DOWN], delta, j);
/* use to be -j -1 */
lighten_down_bump(buffer, 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, width, bytes, steps, cachex, cachey);
delta = blend_amount;
for (j = 0; j < blend_lines; j++)
{
py[0] = -j - 1;
darken_bezier_line(buffer, width, bytes, 0, py[0],
steps, cachex, cachey, delta);
py[0] = j + 1;
lighten_bezier_line(buffer, 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 void
dialog_box (void)
{
GtkWidget *dlg;
GtkWidget *main_vbox;
GtkWidget *frame;
GtkWidget *rbutton1;
GtkWidget *rbutton2;
GtkWidget *cbutton;
GtkWidget *hbox;
GtkWidget *table;
GtkObject *adj;
gchar **argv;
gint argc;
argc = 1;
argv = g_new (gchar *, 1);
argv[0] = g_strdup (PLUG_IN_NAME);
gtk_init (&argc, &argv);
gtk_rc_parse (gimp_gtkrc ());
/* Create the dialog box */
dlg = gimp_dialog_new (_("Jigsaw"), "jigsaw",
gimp_plugin_help_func, "filters/jigsaw.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("OK"), run_callback,
NULL, NULL, NULL, TRUE, FALSE,
_("Cancel"), gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
NULL);
gtk_signal_connect (GTK_OBJECT (dlg), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit),
NULL);
/* init tooltips */
gimp_help_init ();
if (globals.tooltips == 0)
{
gimp_help_disable_tooltips ();
}
main_vbox = gtk_vbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 6);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), main_vbox,
TRUE, TRUE, 0);
gtk_widget_show (main_vbox);
frame = gtk_frame_new (_("Number of Tiles"));
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
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), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_container_set_border_width (GTK_CONTAINER (table), 4);
gtk_container_add (GTK_CONTAINER (frame), table);
/* 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_signal_connect (GTK_OBJECT (adj), "value_changed",
GTK_SIGNAL_FUNC (gimp_int_adjustment_update),
&config.x);
/* 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_signal_connect (GTK_OBJECT (adj), "value_changed",
GTK_SIGNAL_FUNC (gimp_int_adjustment_update),
&config.y);
gtk_widget_show (table);
gtk_widget_show (frame);
frame = gtk_frame_new (_("Bevel Edges"));
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
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), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_container_set_border_width (GTK_CONTAINER (table), 4);
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, 0,
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_signal_connect (GTK_OBJECT (adj), "value_changed",
GTK_SIGNAL_FUNC (gimp_int_adjustment_update),
&config.blend_lines);
/* blending amount */
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("Highlight:"), SCALE_WIDTH, 0,
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_signal_connect (GTK_OBJECT (adj), "value_changed",
GTK_SIGNAL_FUNC (gimp_double_adjustment_update),
&config.blend_amount);
gtk_widget_show (table);
gtk_widget_show (frame);
/* frame for primitive radio buttons */
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
frame = gimp_radio_group_new2 (TRUE, _("Jigsaw Style"),
gimp_radio_button_update,
&config.style, (gpointer) config.style,
_("Square"), (gpointer) BEZIER_1, &rbutton1,
_("Curved"), (gpointer) 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);
gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
table = gtk_table_new (1, 2, FALSE);
gtk_box_pack_start (GTK_BOX (hbox), table, TRUE, TRUE, 0);
cbutton = gtk_check_button_new_with_label (_("Disable Tooltips"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (cbutton),
globals.tooltips ? FALSE : TRUE);
gtk_signal_connect (GTK_OBJECT (cbutton), "toggled",
GTK_SIGNAL_FUNC (check_button_callback),
NULL);
gtk_table_attach (GTK_TABLE (table), cbutton, 0, 1, 1, 2, 0, 0, 0, 20);
gtk_widget_show (cbutton);
gimp_help_set_help_data (cbutton, _("Toggle Tooltips on/off"), NULL);
gtk_widget_show (table);
gtk_widget_show (hbox);
gtk_widget_show (dlg);
gtk_main ();
gimp_help_free ();
gdk_flush ();
return;
}
/***************************************************
callbacks
***************************************************/
static void
run_callback (GtkWidget *widget,
gpointer data)
{
globals.dialog_result = 1;
gtk_widget_destroy (GTK_WIDGET (data));
}
static void
check_button_callback (GtkWidget *widget,
gpointer data)
{
if (GTK_TOGGLE_BUTTON (widget)->active)
{
gimp_help_disable_tooltips ();
globals.tooltips = 0;
}
else
{
gimp_help_enable_tooltips ();
globals.tooltips = 1;
}
}