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gimp/plug-ins/gimpressionist/orientmap.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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/>.
*/
#include "config.h"
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "gimpressionist.h"
#include "ppmtool.h"
#include "infile.h"
#include "preview.h"
#include "orientmap.h"
#include "libgimp/stdplugins-intl.h"
#define NUMVECTYPES 4
static GtkWidget *orient_map_window;
static GtkWidget *vector_preview;
static GtkWidget *orient_map_preview_prev;
static GtkWidget *prev_button;
static GtkWidget *next_button;
static GtkWidget *add_button;
static GtkWidget *kill_button;
static GtkAdjustment *vector_preview_brightness_adjust = NULL;
static GtkAdjustment *angle_adjust = NULL;
static GtkAdjustment *strength_adjust = NULL;
static GtkAdjustment *orient_map_str_exp_adjust = NULL;
static GtkAdjustment *angle_offset_adjust = NULL;
static GtkWidget *vector_types[NUMVECTYPES];
static GtkWidget *orient_voronoi = NULL;
#define OMWIDTH 150
#define OMHEIGHT 150
static vector_t vector[MAXORIENTVECT];
static gint num_vectors = 0;
static gint vector_type;
static ppm_t update_om_preview_nbuffer = {0, 0, NULL};
static gint selectedvector = 0;
static ppm_t update_vector_preview_backup = {0, 0, NULL};
static ppm_t update_vector_preview_buffer = {0, 0, NULL};
static gboolean adjignore = FALSE;
double get_direction (double x, double y, int from)
{
gint i;
gint n;
gint voronoi;
gdouble sum, dx, dy, dst;
vector_t *vec;
gdouble angoff, strexp;
gint first = 0, last;
if (from == 0)
{
n = num_vectors;
vec = vector;
angoff = gtk_adjustment_get_value (angle_offset_adjust);
strexp = gtk_adjustment_get_value (orient_map_str_exp_adjust);
voronoi = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (orient_voronoi));
}
else
{
n = pcvals.num_orient_vectors;
vec = pcvals.orient_vectors;
angoff = pcvals.orient_angle_offset;
strexp = pcvals.orient_strength_exponent;
voronoi = pcvals.orient_voronoi;
}
if (voronoi)
{
gdouble bestdist = -1.0;
for (i = 0; i < n; i++)
{
dst = dist (x,y,vec[i].x,vec[i].y);
if ((bestdist < 0.0) || (dst < bestdist))
{
bestdist = dst;
first = i;
}
}
last = first+1;
}
else
{
first = 0;
last = n;
}
dx = dy = 0.0;
sum = 0.0;
for (i = first; i < last; i++)
{
gdouble s = vec[i].str;
gdouble tx = 0.0, ty = 0.0;
if (vec[i].type == 0)
{
tx = vec[i].dx;
ty = vec[i].dy;
}
else if (vec[i].type == 1)
{
gdouble a = atan2 (vec[i].dy, vec[i].dx);
a -= atan2 (y-vec[i].y, x-vec[i].x);
tx = sin (a + G_PI_2);
ty = cos (a + G_PI_2);
}
else if (vec[i].type == 2)
{
gdouble a = atan2 (vec[i].dy, vec[i].dx);
a += atan2 (y-vec[i].y, x-vec[i].x);
tx = sin (a + G_PI_2);
ty = cos (a + G_PI_2);
}
else if (vec[i].type == 3)
{
gdouble a = atan2 (vec[i].dy, vec[i].dx);
a -= atan2 (y-vec[i].y, x-vec[i].x)*2;
tx = sin (a + G_PI_2);
ty = cos (a + G_PI_2);
}
dst = dist (x,y,vec[i].x,vec[i].y);
dst = pow (dst, strexp);
if (dst < 0.0001)
dst = 0.0001;
s = s / dst;
dx += tx * s;
dy += ty * s;
sum += s;
}
dx = dx / sum;
dy = dy / sum;
return 90 - (gimp_rad_to_deg (atan2 (dy, dx)) + angoff);
}
static void
update_orient_map_preview_prev (void)
{
int x, y;
guchar black[3] = {0, 0, 0};
guchar gray[3] = {120, 120, 120};
guchar white[3] = {255, 255, 255};
if (!PPM_IS_INITED (&update_om_preview_nbuffer))
ppm_new (&update_om_preview_nbuffer,OMWIDTH,OMHEIGHT);
fill (&update_om_preview_nbuffer, black);
for (y = 6; y < OMHEIGHT-4; y += 10)
for (x = 6; x < OMWIDTH-4; x += 10)
{
double dir =
gimp_deg_to_rad (get_direction (x / (double)OMWIDTH,
y / (double)OMHEIGHT,0));
double xo = sin (dir) * 4.0;
double yo = cos (dir) * 4.0;
ppm_drawline (&update_om_preview_nbuffer,
x - xo, y - yo, x + xo, y + yo,
gray);
ppm_put_rgb (&update_om_preview_nbuffer,
x - xo, y - yo,
white);
}
gimp_preview_area_draw (GIMP_PREVIEW_AREA (orient_map_preview_prev),
0, 0, OMWIDTH, OMHEIGHT,
GIMP_RGB_IMAGE,
(guchar *)update_om_preview_nbuffer.col,
OMWIDTH * 3);
gtk_widget_queue_draw (orient_map_preview_prev);
gtk_widget_set_sensitive (prev_button, (num_vectors > 1));
gtk_widget_set_sensitive (next_button, (num_vectors > 1));
gtk_widget_set_sensitive (add_button, (num_vectors < MAXORIENTVECT));
gtk_widget_set_sensitive (kill_button, (num_vectors > 1));
}
static void
update_vector_prev (void)
{
static gint ok = 0;
gint i, x, y;
gdouble dir, xo, yo;
gdouble val;
static gdouble last_val = 0.0;
guchar gray[3] = {120, 120, 120};
guchar red[3] = {255, 0, 0};
guchar white[3] = {255, 255, 255};
if (vector_preview_brightness_adjust)
val = 1.0 - gtk_adjustment_get_value (vector_preview_brightness_adjust) / 100.0;
else
val = 0.5;
if (!ok || (val != last_val))
{
infile_copy_to_ppm (&update_vector_preview_backup);
ppm_apply_brightness (&update_vector_preview_backup, val, 1,1,1);
if ((update_vector_preview_backup.width != OMWIDTH) ||
(update_vector_preview_backup.height != OMHEIGHT))
resize_fast (&update_vector_preview_backup, OMWIDTH, OMHEIGHT);
ok = 1;
}
ppm_copy (&update_vector_preview_backup, &update_vector_preview_buffer);
for (i = 0; i < num_vectors; i++)
{
gdouble s;
x = vector[i].x * OMWIDTH;
y = vector[i].y * OMHEIGHT;
dir = gimp_deg_to_rad (vector[i].dir);
s = gimp_deg_to_rad (vector[i].str);
xo = sin (dir) * (6.0+100*s);
yo = cos (dir) * (6.0+100*s);
if (i == selectedvector)
{
ppm_drawline (&update_vector_preview_buffer,
x - xo, y - yo, x + xo, y + yo, red);
}
else
{
ppm_drawline (&update_vector_preview_buffer,
x - xo, y - yo, x + xo, y + yo, gray);
}
ppm_put_rgb (&update_vector_preview_buffer, x - xo, y - yo, white);
}
gimp_preview_area_draw (GIMP_PREVIEW_AREA (vector_preview),
0, 0, OMWIDTH, OMHEIGHT,
GIMP_RGB_IMAGE,
(guchar *)update_vector_preview_buffer.col,
OMWIDTH * 3);
}
void
orientation_map_free_resources (void)
{
ppm_kill (&update_om_preview_nbuffer);
ppm_kill (&update_vector_preview_backup);
ppm_kill (&update_vector_preview_buffer);
}
static void
update_slides (void)
{
gint type;
adjignore = TRUE;
gtk_adjustment_set_value (angle_adjust, vector[selectedvector].dir);
gtk_adjustment_set_value (strength_adjust, vector[selectedvector].str);
type = vector[selectedvector].type;
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (vector_types[type]), TRUE);
adjignore = FALSE;
}
static void
prev_click_callback (GtkWidget *w, gpointer data)
{
selectedvector--;
if (selectedvector < 0)
selectedvector = num_vectors-1;
update_slides ();
update_vector_prev ();
}
static void
next_click_callback (GtkWidget *w, gpointer data)
{
selectedvector++;
if (selectedvector == num_vectors) selectedvector = 0;
update_slides ();
update_vector_prev ();
}
static void
add_new_vector (gdouble x, gdouble y)
{
vector[num_vectors].x = x;
vector[num_vectors].y = y;
vector[num_vectors].dir = 0.0;
vector[num_vectors].dx = sin (gimp_deg_to_rad (0.0));
vector[num_vectors].dy = cos (gimp_deg_to_rad (0.0));
vector[num_vectors].str = 1.0;
vector[num_vectors].type = 0;
selectedvector = num_vectors;
num_vectors++;
}
static void
add_click_callback (GtkWidget *w, gpointer data)
{
add_new_vector (0.5, 0.5);
update_slides ();
update_vector_prev ();
update_orient_map_preview_prev ();
}
static void
delete_click_callback (GtkWidget *w, gpointer data)
{
int i;
for (i = selectedvector; i < num_vectors-1; i++)
vector[i] = vector[i + 1];
num_vectors--;
if (selectedvector >= num_vectors) selectedvector = 0;
update_slides ();
update_vector_prev ();
update_orient_map_preview_prev ();
}
static void
map_click_callback (GtkWidget *w, GdkEventButton *event)
{
if (event->button == 1)
{
vector[selectedvector].x = event->x / (double)OMWIDTH;
vector[selectedvector].y = event->y / (double)OMHEIGHT;
}
else if (event->button == 2)
{
if (num_vectors + 1 == MAXORIENTVECT)
return;
add_new_vector (event->x / (double)OMWIDTH,
event->y / (double)OMHEIGHT);
update_slides ();
}
else if (event->button == 3)
{
gdouble d;
d = atan2 (OMWIDTH * vector[selectedvector].x - event->x,
OMHEIGHT * vector[selectedvector].y - event->y);
vector[selectedvector].dir = gimp_rad_to_deg (d);
vector[selectedvector].dx = sin (d);
vector[selectedvector].dy = cos (d);
update_slides ();
}
update_vector_prev ();
update_orient_map_preview_prev ();
}
static void
angle_adjust_move_callback (GtkWidget *w, gpointer data)
{
if (adjignore)
return;
vector[selectedvector].dir = gtk_adjustment_get_value (angle_adjust);
vector[selectedvector].dx =
sin (gimp_deg_to_rad (vector[selectedvector].dir));
vector[selectedvector].dy =
cos (gimp_deg_to_rad (vector[selectedvector].dir));
update_vector_prev ();
update_orient_map_preview_prev ();
}
static void
strength_adjust_move_callback (GtkWidget *w, gpointer data)
{
if (adjignore)
return;
vector[selectedvector].str = gtk_adjustment_get_value (strength_adjust);
update_vector_prev ();
update_orient_map_preview_prev ();
}
static void
strength_exponent_adjust_move_callback (GtkWidget *w, gpointer data)
{
if (adjignore)
return;
update_vector_prev ();
update_orient_map_preview_prev ();
}
static void
angle_offset_adjust_move_callback (GtkWidget *w, gpointer data)
{
if (adjignore)
return;
update_vector_prev ();
update_orient_map_preview_prev ();
}
static void
vector_type_click_callback (GtkWidget *w, gpointer data)
{
if (adjignore)
return;
gimp_radio_button_update (w, data);
vector[selectedvector].type = vector_type;
update_vector_prev ();
update_orient_map_preview_prev ();
}
static void
orient_map_response (GtkWidget *widget,
gint response_id,
gpointer data)
{
switch (response_id)
{
case GTK_RESPONSE_APPLY:
case GTK_RESPONSE_OK:
{
gint i;
for (i = 0; i < num_vectors; i++)
pcvals.orient_vectors[i] = vector[i];
pcvals.num_orient_vectors = num_vectors;
pcvals.orient_strength_exponent = gtk_adjustment_get_value (orient_map_str_exp_adjust);
pcvals.orient_angle_offset = gtk_adjustment_get_value (angle_offset_adjust);
pcvals.orient_voronoi = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (orient_voronoi));
}
};
if (response_id != GTK_RESPONSE_APPLY)
gtk_widget_hide (widget);
}
static void
init_vectors (void)
{
if (pcvals.num_orient_vectors)
{
gint i;
num_vectors = pcvals.num_orient_vectors;
for (i = 0; i < num_vectors; i++)
vector[i] = pcvals.orient_vectors[i];
}
else
{/* Shouldn't happen */
num_vectors = 0;
add_new_vector (0.5, 0.5);
}
if (selectedvector >= num_vectors)
selectedvector = num_vectors-1;
}
void
update_orientmap_dialog (void)
{
if (!orient_map_window) return;
init_vectors ();
gtk_adjustment_set_value (orient_map_str_exp_adjust,
pcvals.orient_strength_exponent);
gtk_adjustment_set_value (angle_offset_adjust,
pcvals.orient_angle_offset);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (orient_voronoi),
pcvals.orient_voronoi);
update_vector_prev ();
update_orient_map_preview_prev ();
}
void
create_orientmap_dialog (GtkWidget *parent)
{
GtkWidget *tmpw, *tmpw2;
GtkWidget *grid1, *grid2;
GtkWidget *frame;
GtkWidget *ebox, *hbox, *vbox;
init_vectors ();
if (orient_map_window)
{
update_vector_prev ();
update_orient_map_preview_prev ();
gtk_widget_show (orient_map_window);
return;
}
orient_map_window =
gimp_dialog_new (_("Orientation Map Editor"), PLUG_IN_ROLE,
gtk_widget_get_toplevel (parent), 0,
gimp_standard_help_func, PLUG_IN_PROC,
_("_Apply"), GTK_RESPONSE_APPLY,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_OK"), GTK_RESPONSE_OK,
NULL);
gimp_dialog_set_alternative_button_order (GTK_DIALOG (orient_map_window),
GTK_RESPONSE_OK,
GTK_RESPONSE_APPLY,
GTK_RESPONSE_CANCEL,
-1);
g_signal_connect (orient_map_window, "response",
G_CALLBACK (orient_map_response),
orient_map_window);
g_signal_connect (orient_map_window, "destroy",
G_CALLBACK (gtk_widget_destroyed),
&orient_map_window);
grid1 = gtk_grid_new ();
gtk_container_set_border_width (GTK_CONTAINER (grid1), 6);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (orient_map_window))),
grid1, TRUE, TRUE, 0);
gtk_widget_show (grid1);
frame = gtk_frame_new (_("Vectors"));
gtk_container_set_border_width (GTK_CONTAINER (frame), 2);
gtk_grid_attach (GTK_GRID (grid1), frame, 0, 0, 1, 1);
gtk_widget_show (frame);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_container_add (GTK_CONTAINER (frame), hbox);
gtk_widget_show (hbox);
ebox = gtk_event_box_new ();
gimp_help_set_help_data (ebox,
_("The vector-field. "
"Left-click to move selected vector, "
"Right-click to point it towards mouse, "
"Middle-click to add a new vector."), NULL);
gtk_box_pack_start (GTK_BOX (hbox), ebox, FALSE, FALSE, 0);
tmpw = vector_preview = gimp_preview_area_new ();
gtk_widget_set_size_request (tmpw, OMWIDTH, OMHEIGHT);
gtk_container_add (GTK_CONTAINER (ebox), tmpw);
gtk_widget_show (tmpw);
gtk_widget_add_events (ebox, GDK_BUTTON_PRESS_MASK);
g_signal_connect (ebox, "button-press-event",
G_CALLBACK (map_click_callback), NULL);
gtk_widget_show (ebox);
vector_preview_brightness_adjust =
gtk_adjustment_new (50.0, 0.0, 100.0, 1.0, 1.0, 1.0);
tmpw = gtk_scale_new (GTK_ORIENTATION_VERTICAL,
vector_preview_brightness_adjust);
gtk_scale_set_draw_value (GTK_SCALE (tmpw), FALSE);
gtk_box_pack_start (GTK_BOX (hbox), tmpw, FALSE, FALSE,0);
gtk_widget_show (tmpw);
g_signal_connect (vector_preview_brightness_adjust, "value-changed",
G_CALLBACK (update_vector_prev), NULL);
gimp_help_set_help_data (tmpw, _("Adjust the preview's brightness"), NULL);
tmpw2 = tmpw = gtk_frame_new (_("Preview"));
gtk_container_set_border_width (GTK_CONTAINER (tmpw), 2);
gtk_grid_attach (GTK_GRID (grid1), tmpw, 1, 0, 1, 1);
gtk_widget_show (tmpw);
tmpw = orient_map_preview_prev = gimp_preview_area_new ();
gtk_widget_set_size_request (tmpw, OMWIDTH, OMHEIGHT);
gtk_container_add (GTK_CONTAINER (tmpw2), tmpw);
gtk_widget_show (tmpw);
hbox = tmpw = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
gtk_container_set_border_width (GTK_CONTAINER (tmpw), 2);
gtk_grid_attach (GTK_GRID (grid1), tmpw, 0, 1, 1, 1);
gtk_widget_show (tmpw);
prev_button = tmpw = gtk_button_new_with_mnemonic ("_<<");
gtk_box_pack_start (GTK_BOX (hbox), tmpw, FALSE, TRUE, 0);
gtk_widget_show (tmpw);
g_signal_connect (tmpw, "clicked", G_CALLBACK (prev_click_callback), NULL);
gimp_help_set_help_data (tmpw, _("Select previous vector"), NULL);
next_button = tmpw = gtk_button_new_with_mnemonic ("_>>");
gtk_box_pack_start (GTK_BOX (hbox),tmpw,FALSE,TRUE,0);
gtk_widget_show (tmpw);
g_signal_connect (tmpw, "clicked", G_CALLBACK (next_click_callback), NULL);
gimp_help_set_help_data (tmpw, _("Select next vector"), NULL);
add_button = tmpw = gtk_button_new_with_mnemonic ( _("A_dd"));
gtk_box_pack_start (GTK_BOX (hbox), tmpw, FALSE, TRUE, 0);
gtk_widget_show (tmpw);
g_signal_connect (tmpw, "clicked", G_CALLBACK (add_click_callback), NULL);
gimp_help_set_help_data (tmpw, _("Add new vector"), NULL);
kill_button = tmpw = gtk_button_new_with_mnemonic ( _("_Kill"));
gtk_box_pack_start (GTK_BOX (hbox), tmpw, FALSE, TRUE, 0);
gtk_widget_show (tmpw);
g_signal_connect (tmpw, "clicked", G_CALLBACK (delete_click_callback), NULL);
gimp_help_set_help_data (tmpw, _("Delete selected vector"), NULL);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_box_set_spacing (GTK_BOX (hbox), 12);
gtk_grid_attach (GTK_GRID (grid1), hbox, 0, 2, 2, 1);
gtk_widget_show (hbox);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
frame = gimp_int_radio_group_new (TRUE, _("Type"),
G_CALLBACK (vector_type_click_callback),
&vector_type, 0,
_("_Normal"), 0, &vector_types[0],
_("Vorte_x"), 1, &vector_types[1],
_("Vortex_2"), 2, &vector_types[2],
_("Vortex_3"), 3, &vector_types[3],
NULL);
gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
orient_voronoi = tmpw = gtk_check_button_new_with_mnemonic ( _("_Voronoi"));
gtk_box_pack_start (GTK_BOX (vbox), tmpw, TRUE, TRUE, 0);
gtk_widget_show (tmpw);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (tmpw),
pcvals.orient_voronoi);
g_signal_connect (tmpw, "clicked",
G_CALLBACK (angle_offset_adjust_move_callback), NULL);
gimp_help_set_help_data (tmpw,
_("Voronoi-mode makes only the vector closest to the given point have any influence"),
NULL);
grid2 = gtk_grid_new ();
gtk_grid_set_column_spacing (GTK_GRID (grid2), 4);
gtk_box_pack_start (GTK_BOX (hbox), grid2, TRUE, TRUE, 0);
gtk_widget_show (grid2);
angle_adjust =
gimp_scale_entry_new (GTK_GRID (grid2), 0, 0,
_("A_ngle:"),
150, 6, 0.0,
0.0, 360.0, 1.0, 10.0, 1,
TRUE, 0, 0,
_("Change the angle of the selected vector"),
NULL);
g_signal_connect (angle_adjust, "value-changed",
G_CALLBACK (angle_adjust_move_callback), NULL);
angle_offset_adjust =
gimp_scale_entry_new (GTK_GRID (grid2), 0, 1,
_("Ang_le offset:"),
150, 6, 0.0,
0.0, 360.0, 1.0, 10.0, 1,
TRUE, 0, 0,
_("Offset all vectors with a given angle"),
NULL);
g_signal_connect (angle_offset_adjust, "value-changed",
G_CALLBACK (angle_offset_adjust_move_callback), NULL);
strength_adjust =
gimp_scale_entry_new (GTK_GRID (grid2), 0, 2,
_("_Strength:"),
150, 6, 1.0,
0.1, 5.0, 0.1, 1.0, 1,
TRUE, 0, 0,
_("Change the strength of the selected vector"),
NULL);
g_signal_connect (strength_adjust, "value-changed",
G_CALLBACK (strength_adjust_move_callback), NULL);
orient_map_str_exp_adjust =
gimp_scale_entry_new (GTK_GRID (grid2), 0, 3,
_("S_trength exp.:"),
150, 6, 1.0,
0.1, 10.9, 0.1, 1.0, 1,
TRUE, 0, 0,
_("Change the exponent of the strength"),
NULL);
g_signal_connect (orient_map_str_exp_adjust, "value-changed",
G_CALLBACK (strength_exponent_adjust_move_callback), NULL);
gtk_widget_show (orient_map_window);
update_vector_prev ();
update_orient_map_preview_prev ();
}
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