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Fixes bug 50911. Details there.

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files: plug-ins/common/sparkle.c
This commit is contained in:
Seth Burgess
2003-09-17 05:21:08 +00:00
parent 72c5bb6c73
commit d9996103cc
2 changed files with 354 additions and 329 deletions
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6
ChangeLog
View File

@ -1,3 +1,9 @@
2003-09-17 Seth Burgess <sjburges@gimp.org>
* plug-ins/common/sparkle.c: use the rowstride of a pixel region
because you never know when you're starting on a selection. Fixes
bug #50911.
2003-09-17 Simon Budig <simon@gimp.org>
* app/tools/gimpvectortool.c: Ok, since the obsolete undo

673
plug-ins/common/sparkle.c
View File

@ -1,7 +1,9 @@
/* Sparkle --- image filter plug-in for The Gimp image manipulation program
* Copyright (C) 1996 by John Beale; ported to Gimp by Michael J. Hammel;
* It has been optimized a little, bugfixed and modified by Martin Weber
* for additional functionality.
* for additional functionality. Also bugfixed by Seth Burgess (9/17/03)
* to take rowstrides into account when selections are present (bug #50911).
* Attempted reformatting.
*
* 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
@ -19,11 +21,11 @@
*
* You can contact Michael at mjhammel@csn.net
* You can contact Martin at martweb@gmx.net
* Note: set tabstops to 3 to make this more readable.
* You can contact Seth at sjburges@gimp.org
*/
/*
* Sparkle 1.26 - simulate pixel bloom and diffraction effects
* Sparkle 1.27 - simulate pixel bloom and diffraction effects
*/
#include "config.h"
@ -77,52 +79,52 @@ typedef struct
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gint sparkle_dialog (void);
static void sparkle_ok_callback (GtkWidget *widget,
gpointer data);
gpointer data);
static gint compute_luminosity (guchar *pixel,
gint gray,
gint has_alpha);
gint gray,
gint has_alpha);
static gint compute_lum_threshold (GimpDrawable *drawable,
gdouble percentile);
gdouble percentile);
static void sparkle (GimpDrawable *drawable,
gint threshold);
gint threshold);
static void fspike (GimpPixelRgn *src_rgn,
GimpPixelRgn *dest_rgn,
gint gray,
gint x1,
gint y1,
gint x2,
gint y2,
gint xr,
gint yr,
gint tile_width,
gint tile_height,
gdouble inten,
gdouble length,
gdouble angle,
GimpPixelRgn *dest_rgn,
gint gray,
gint x1,
gint y1,
gint x2,
gint y2,
gint xr,
gint yr,
gint tile_width,
gint tile_height,
gdouble inten,
gdouble length,
gdouble angle,
GRand *gr);
static GimpTile * rpnt (GimpDrawable *drawable,
GimpTile *tile,
gint x1,
gint y1,
gint x2,
gint y2,
gdouble xr,
gdouble yr,
gint tile_width,
gint tile_height,
gint *row,
gint *col,
gint bytes,
gdouble inten,
guchar color[MAX_CHANNELS]);
GimpTile *tile,
gint x1,
gint y1,
gint x2,
gint y2,
gdouble xr,
gdouble yr,
gint tile_width,
gint tile_height,
gint *row,
gint *col,
gint bytes,
gdouble inten,
guchar color[MAX_CHANNELS]);
GimpPlugInInfo PLUG_IN_INFO =
{
@ -135,10 +137,10 @@ GimpPlugInInfo PLUG_IN_INFO =
static SparkleVals svals =
{
0.001, /* luminosity threshold */
0.5, /* flare intensity */
20.0, /* spike length */
0.5, /* flare intensity */
20.0, /* spike length */
4.0, /* spike points */
15.0, /* spike angle */
15.0, /* spike angle */
1.0, /* spike density */
0.0, /* opacity */
0.0, /* random hue */
@ -183,18 +185,17 @@ query (void)
};
gimp_install_procedure ("plug_in_sparkle",
"Simulates pixel bloom and diffraction effects",
"No help yet",
"John Beale, & (ported to GIMP v0.54) Michael J. Hammel & ted to GIMP v1.0) Spencer Kimball",
"John Beale",
"Version 1.26, December 1998",
/* don't translate '<Image>', it's a special
* keyword for the gtk toolkit */
N_("<Image>/Filters/Light Effects/_Sparkle..."),
"RGB*, GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
"Simulates pixel bloom and diffraction effects",
"Uses a percentage based luminoisty threhsold to find "
"candidate pixels for adding some sparkles (spikes). ",
"John Beale, & (ported to GIMP v0.54) Michael J. Hammel & ted to GIMP v1.0) & Seth Burgess & Spencer Kimball",
"John Beale",
"Version 1.27, September 2003",
N_("<Image>/Filters/Light Effects/_Sparkle..."),
"RGB*, GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
}
static void
@ -228,53 +229,53 @@ run (const gchar *name,
/* First acquire information with a dialog */
if (! sparkle_dialog ())
return;
return;
break;
case GIMP_RUN_NONINTERACTIVE:
/* Make sure all the arguments are there! */
if (nparams != 16)
{
status = GIMP_PDB_CALLING_ERROR;
}
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
svals.lum_threshold = param[3].data.d_float;
svals.flare_inten = param[4].data.d_float;
svals.spike_len = param[5].data.d_int32;
svals.spike_pts = param[6].data.d_int32;
svals.spike_angle = param[7].data.d_int32;
svals.density = param[8].data.d_float;
svals.opacity = param[9].data.d_float;
svals.random_hue = param[10].data.d_float;
svals.random_saturation = param[11].data.d_float;
svals.preserve_luminosity = (param[12].data.d_int32) ? TRUE : FALSE;
svals.invers = (param[13].data.d_int32) ? TRUE : FALSE;
svals.border = (param[14].data.d_int32) ? TRUE : FALSE;
svals.colortype = param[15].data.d_int32;
{
svals.lum_threshold = param[3].data.d_float;
svals.flare_inten = param[4].data.d_float;
svals.spike_len = param[5].data.d_int32;
svals.spike_pts = param[6].data.d_int32;
svals.spike_angle = param[7].data.d_int32;
svals.density = param[8].data.d_float;
svals.opacity = param[9].data.d_float;
svals.random_hue = param[10].data.d_float;
svals.random_saturation = param[11].data.d_float;
svals.preserve_luminosity = (param[12].data.d_int32) ? TRUE : FALSE;
svals.invers = (param[13].data.d_int32) ? TRUE : FALSE;
svals.border = (param[14].data.d_int32) ? TRUE : FALSE;
svals.colortype = param[15].data.d_int32;
if (svals.lum_threshold < 0.0 || svals.lum_threshold > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.flare_inten < 0.0 || svals.flare_inten > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.spike_len < 0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.spike_pts < 0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.spike_angle < -1 || svals.spike_angle > 360)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.density < 0.0 || svals.density > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.opacity < 0.0 || svals.opacity > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.random_hue < 0.0 || svals.random_hue > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.random_saturation < 0.0 ||
svals.random_saturation > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.colortype < NATURAL || svals.colortype > BACKGROUND)
status = GIMP_PDB_CALLING_ERROR;
}
if (svals.lum_threshold < 0.0 || svals.lum_threshold > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.flare_inten < 0.0 || svals.flare_inten > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.spike_len < 0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.spike_pts < 0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.spike_angle < -1 || svals.spike_angle > 360)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.density < 0.0 || svals.density > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.opacity < 0.0 || svals.opacity > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.random_hue < 0.0 || svals.random_hue > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.random_saturation < 0.0 ||
svals.random_saturation > 1.0)
status = GIMP_PDB_CALLING_ERROR;
else if (svals.colortype < NATURAL || svals.colortype > BACKGROUND)
status = GIMP_PDB_CALLING_ERROR;
}
break;
case GIMP_RUN_WITH_LAST_VALS:
@ -309,11 +310,11 @@ run (const gchar *name,
sparkle (drawable, threshold);
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
gimp_displays_flush ();
/* Store mvals data */
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data ("plug_in_sparkle", &svals, sizeof (SparkleVals));
gimp_set_data ("plug_in_sparkle", &svals, sizeof (SparkleVals));
}
else
{
@ -342,24 +343,24 @@ sparkle_dialog (void)
gimp_ui_init ("sparkle", FALSE);
dlg = gimp_dialog_new (_("Sparkle"), "sparkle",
gimp_standard_help_func, "filters/sparkle.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
gimp_standard_help_func, "filters/sparkle.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
GTK_STOCK_CANCEL, gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
GTK_STOCK_CANCEL, gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
GTK_STOCK_OK, sparkle_ok_callback,
NULL, NULL, NULL, TRUE, FALSE,
GTK_STOCK_OK, sparkle_ok_callback,
NULL, NULL, NULL, TRUE, FALSE,
NULL);
NULL);
g_signal_connect (dlg, "destroy",
G_CALLBACK (gtk_main_quit),
NULL);
/* parameter settings */
main_vbox = gimp_parameter_settings_new (GTK_DIALOG (dlg)->vbox, 1, 3);
main_vbox = gimp_parameter_settings_new (GTK_DIALOG (dlg)->vbox, 0, 0);
table = gtk_table_new (9, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
@ -369,93 +370,93 @@ sparkle_dialog (void)
scale_data =
gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("Luminosity _Threshold:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.lum_threshold, 0.0, 0.1, 0.001, 0.01, 3,
TRUE, 0, 0,
_("Adjust the Luminosity Threshold"), NULL);
_("Luminosity _Threshold:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.lum_threshold, 0.0, 0.1, 0.001, 0.01, 3,
TRUE, 0, 0,
_("Adjust the Luminosity Threshold"), NULL);
g_signal_connect (scale_data, "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&svals.lum_threshold);
scale_data =
gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("F_lare Intensity:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.flare_inten, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Adjust the Flare Intensity"), NULL);
_("F_lare Intensity:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.flare_inten, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Adjust the Flare Intensity"), NULL);
g_signal_connect (scale_data, "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&svals.flare_inten);
scale_data =
gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
_("_Spike Length:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.spike_len, 1, 100, 1, 10, 0,
TRUE, 0, 0,
_("Adjust the Spike Length"), NULL);
_("_Spike Length:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.spike_len, 1, 100, 1, 10, 0,
TRUE, 0, 0,
_("Adjust the Spike Length"), NULL);
g_signal_connect (scale_data, "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&svals.spike_len);
scale_data =
gimp_scale_entry_new (GTK_TABLE (table), 0, 3,
_("Sp_ike Points:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.spike_pts, 0, 16, 1, 4, 0,
TRUE, 0, 0,
_("Adjust the Number of Spikes"), NULL);
_("Sp_ike Points:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.spike_pts, 0, 16, 1, 4, 0,
TRUE, 0, 0,
_("Adjust the Number of Spikes"), NULL);
g_signal_connect (scale_data, "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&svals.spike_pts);
scale_data =
gimp_scale_entry_new (GTK_TABLE (table), 0, 4,
_("Spi_ke Angle (-1: Random):"), SCALE_WIDTH, ENTRY_WIDTH,
svals.spike_angle, -1, 360, 1, 15, 0,
TRUE, 0, 0,
_("Adjust the Spike Angle "
"(-1 means a Random Angle is choosen)"), NULL);
_("Spi_ke Angle (-1: Random):"), SCALE_WIDTH, ENTRY_WIDTH,
svals.spike_angle, -1, 360, 1, 15, 0,
TRUE, 0, 0,
_("Adjust the Spike Angle "
"(-1 means a Random Angle is choosen)"), NULL);
g_signal_connect (scale_data, "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&svals.spike_angle);
scale_data =
gimp_scale_entry_new (GTK_TABLE (table), 0, 5,
_("Spik_e Density:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.density, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Adjust the Spike Density"), NULL);
_("Spik_e Density:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.density, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Adjust the Spike Density"), NULL);
g_signal_connect (scale_data, "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&svals.density);
scale_data =
gimp_scale_entry_new (GTK_TABLE (table), 0, 6,
_("Op_acity:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.opacity, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Adjust the Opacity of the Spikes"), NULL);
_("Op_acity:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.opacity, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Adjust the Opacity of the Spikes"), NULL);
g_signal_connect (scale_data, "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&svals.opacity);
scale_data =
gimp_scale_entry_new (GTK_TABLE (table), 0, 7,
_("_Random Hue:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.random_hue, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Adjust the Value how much the Hue should "
"be changed randomly"), NULL);
_("_Random Hue:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.random_hue, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Adjust the Value how much the Hue should "
"be changed randomly"), NULL);
g_signal_connect (scale_data, "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&svals.random_hue);
scale_data =
gimp_scale_entry_new (GTK_TABLE (table), 0, 8,
_("Rando_m Saturation:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.random_saturation, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Adjust the Value how much the Saturation should "
"be changed randomly"), NULL);
_("Rando_m Saturation:"), SCALE_WIDTH, ENTRY_WIDTH,
svals.random_saturation, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Adjust the Value how much the Saturation should "
"be changed randomly"), NULL);
g_signal_connect (scale_data, "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&svals.random_saturation);
@ -475,11 +476,11 @@ sparkle_dialog (void)
toggle = gtk_check_button_new_with_mnemonic (_("_Preserve Luminosity"));
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
svals.preserve_luminosity);
svals.preserve_luminosity);
gtk_widget_show (toggle);
gimp_help_set_help_data (toggle, _("Should the Luminosity be preserved?"),
NULL);
NULL);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
@ -502,8 +503,8 @@ sparkle_dialog (void)
gtk_widget_show (toggle);
gimp_help_set_help_data (toggle,
_("Draw a Border of Spikes around the Image"),
NULL);
_("Draw a Border of Spikes around the Image"),
NULL);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
@ -548,8 +549,8 @@ sparkle_dialog (void)
static gint
compute_luminosity (guchar *pixel,
gint gray,
gint has_alpha)
gint gray,
gint has_alpha)
{
gint pixel0, pixel1, pixel2;
@ -568,9 +569,9 @@ compute_luminosity (guchar *pixel,
if (gray)
{
if (has_alpha)
return (pixel0 * pixel1) / 255;
return (pixel0 * pixel1) / 255;
else
return (pixel0);
return (pixel0);
}
else
{
@ -582,22 +583,21 @@ compute_luminosity (guchar *pixel,
max = MAX (max, pixel2);
if (has_alpha)
return ((min + max) * pixel[3]) / 510;
return ((min + max) * pixel[3]) / 510;
else
return (min + max) / 2;
return (min + max) / 2;
}
}
static gint
compute_lum_threshold (GimpDrawable *drawable,
gdouble percentile)
gdouble percentile)
{
GimpPixelRgn src_rgn;
gpointer pr;
guchar *data;
gint values[256];
gint total, sum;
gint size;
gint gray;
gint has_alpha;
gint i;
@ -612,21 +612,25 @@ compute_lum_threshold (GimpDrawable *drawable,
has_alpha = gimp_drawable_has_alpha (drawable->drawable_id);
gimp_pixel_rgn_init (&src_rgn, drawable,
x1, y1, (x2 - x1), (y2 - y1), FALSE, FALSE);
x1, y1, (x2 - x1), (y2 - y1), FALSE, FALSE);
for (pr = gimp_pixel_rgns_register (1, &src_rgn);
pr != NULL;
pr = gimp_pixel_rgns_process (pr))
{
data = src_rgn.data;
size = src_rgn.w * src_rgn.h;
{
int sx, sy;
data = src_rgn.data;
while (size--)
{
values [compute_luminosity (data, gray, has_alpha)]++;
data += src_rgn.bpp;
}
}
for (sy = 0; sy<src_rgn.h; sy++)
{
for(sx = 0; sx<src_rgn.w; sx++)
{
values [compute_luminosity (data, gray, has_alpha)]++;
data += src_rgn.bpp;
}
data+=src_rgn.rowstride-(src_rgn.w*src_rgn.bpp);
}
}
total = (x2 - x1) * (y2 - y1);
sum = 0;
@ -635,25 +639,24 @@ compute_lum_threshold (GimpDrawable *drawable,
{
sum += values[i];
if ((gdouble) sum > percentile * (gdouble) total)
{
num_sparkles = sum;
return i;
}
{
num_sparkles = sum;
return i;
}
}
return 0;
}
static void
sparkle (GimpDrawable *drawable,
gint threshold)
gint threshold)
{
GimpPixelRgn src_rgn, dest_rgn;
guchar *src, *dest;
gdouble nfrac, length, inten, spike_angle;
gint cur_progress, max_progress;
gint x1, y1, x2, y2;
gint size, lum, x, y, b;
gint lum, x, y, b;
gint gray;
gint has_alpha, alpha;
gpointer pr;
@ -673,105 +676,115 @@ sparkle (GimpDrawable *drawable,
cur_progress = 0;
max_progress = num_sparkles;
/* copy what is already there */
gimp_pixel_rgn_init (&src_rgn, drawable,
x1, y1, (x2 - x1), (y2 - y1), FALSE, FALSE);
x1, y1, (x2 - x1), (y2 - y1), FALSE, FALSE);
gimp_pixel_rgn_init (&dest_rgn, drawable,
x1, y1, (x2 - x1), (y2 - y1), TRUE, TRUE);
x1, y1, (x2 - x1), (y2 - y1), TRUE, TRUE);
for (pr = gimp_pixel_rgns_register (2, &src_rgn, &dest_rgn);
pr != NULL;
pr = gimp_pixel_rgns_process (pr))
{
int sx, sy;
src = src_rgn.data;
dest = dest_rgn.data;
size = src_rgn.w * src_rgn.h;
while (size --)
for (sy=0; sy<src_rgn.h; sy++)
{
if(has_alpha && src[alpha] == 0)
{
memset(dest, 0, alpha * sizeof(guchar));
dest += alpha;
}
else
for (sx=0; sx<src_rgn.w; sx++)
{
for (b = 0, tmp1 = src; b < alpha; b++)
if(has_alpha && src[alpha] == 0)
{
memset(dest, 0, alpha * sizeof(guchar));
dest += alpha;
}
else
{
*dest++ = *tmp1++;
for (b = 0, tmp1 = src; b < alpha; b++)
{
*dest++ = *tmp1++;
}
}
}
if (has_alpha)
*dest++ = src[alpha];
if (has_alpha)
*dest++ = src[alpha];
src += src_rgn.bpp;
src += src_rgn.bpp;
}
src += src_rgn.rowstride- (src_rgn.bpp * src_rgn.w);
dest += dest_rgn.rowstride- (dest_rgn.bpp * dest_rgn.w);
}
}
/* add effects to new image based on intensity of old pixels */
gimp_pixel_rgn_init (&src_rgn, drawable,
x1, y1, (x2 - x1), (y2 - y1), FALSE, FALSE);
x1, y1, (x2 - x1), (y2 - y1), FALSE, FALSE);
gimp_pixel_rgn_init (&dest_rgn, drawable,
x1, y1, (x2 - x1), (y2 - y1), TRUE, TRUE);
x1, y1, (x2 - x1), (y2 - y1), TRUE, TRUE);
for (pr = gimp_pixel_rgns_register (2, &src_rgn, &dest_rgn);
pr != NULL;
pr = gimp_pixel_rgns_process (pr))
{
src = src_rgn.data;
for (y = 0; y < src_rgn.h; y++)
for (x = 0; x < src_rgn.w; x++)
{
if (svals.border)
{
if (x + src_rgn.x == 0 || y + src_rgn.y == 0
|| x + src_rgn.x == drawable->width - 1
|| y + src_rgn.y == drawable->height - 1)
lum = 255;
else
lum = 0;
}
else
lum = compute_luminosity (src, gray, has_alpha);
if (lum >= threshold)
{
nfrac = fabs ((gdouble) (lum + 1 - threshold) /
(gdouble) (256 - threshold));
length = (gdouble) svals.spike_len * (gdouble) pow (nfrac, 0.8);
inten = svals.flare_inten * nfrac /* pow (nfrac, 1.0) */;
{
for (x = 0; x < src_rgn.w; x++)
{
if (svals.border)
{
if (x + src_rgn.x == 0 || y + src_rgn.y == 0
|| x + src_rgn.x == drawable->width - 1
|| y + src_rgn.y == drawable->height - 1)
lum = 255;
else
lum = 0;
}
else
lum = compute_luminosity (src, gray, has_alpha);
if (lum >= threshold)
{
nfrac = fabs ((gdouble) (lum + 1 - threshold) /
(gdouble) (256 - threshold));
length = (gdouble) svals.spike_len * (gdouble) pow (nfrac, 0.8);
inten = svals.flare_inten * nfrac /* pow (nfrac, 1.0) */;
/* fspike im x,y intens rlength angle */
if (svals.spike_pts > 0)
{
/* major spikes */
if (svals.spike_angle == -1)
spike_angle = g_rand_double_range (gr, 0, 360.0);
else
spike_angle = svals.spike_angle;
if (g_rand_double (gr) <= svals.density)
{
fspike (&src_rgn, &dest_rgn, gray, x1, y1, x2, y2,
x + src_rgn.x, y + src_rgn.y,
tile_width, tile_height,
inten, length, spike_angle, gr);
/* minor spikes */
fspike (&src_rgn, &dest_rgn, gray, x1, y1, x2, y2,
x + src_rgn.x, y + src_rgn.y,
tile_width, tile_height,
inten * 0.7, length * 0.7,
((gdouble) spike_angle + 180.0 / svals.spike_pts), gr);
}
}
cur_progress ++;
if ((cur_progress % 5) == 0)
gimp_progress_update ((double) cur_progress /
(double) max_progress);
}
src += src_rgn.bpp;
}
}
/* fspike im x,y intens rlength angle */
if (svals.spike_pts > 0)
{
gdouble random_1 = g_rand_double(gr);
/* major spikes */
if (svals.spike_angle == -1)
spike_angle = g_rand_double_range (gr, 0, 360.0);
else
spike_angle = svals.spike_angle;
if (random_1 <= svals.density)
{
fspike (&src_rgn, &dest_rgn, gray, x1, y1, x2, y2,
x + src_rgn.x, y + src_rgn.y,
tile_width, tile_height,
inten, length, spike_angle, gr);
/* minor spikes */
fspike (&src_rgn, &dest_rgn, gray, x1, y1, x2, y2,
x + src_rgn.x, y + src_rgn.y,
tile_width, tile_height,
inten * 0.7, length * 0.7,
((gdouble)spike_angle+180.0/svals.spike_pts),
gr);
}
}
cur_progress ++;
if ((cur_progress % 5) == 0)
gimp_progress_update ((double) cur_progress /
(double) max_progress);
}
src += src_rgn.bpp;
}
src += src_rgn.rowstride - (src_rgn.w * src_rgn.bpp);
}
}
gimp_progress_update (1.0);
/* update the blurred region */
@ -805,7 +818,7 @@ rpnt (GimpDrawable *drawable,
gint newcol, newrow;
gint newcoloff, newrowoff;
x = (int) (xr); /* integer coord. to upper left of real point */
x = (int) (xr); /* integer coord. to upper left of real point */
y = (int) (yr);
if (x >= x1 && y >= y1 && x < x2 && y < y2)
@ -816,14 +829,14 @@ rpnt (GimpDrawable *drawable,
newrowoff = y % tile_height;
if ((newcol != *col) || (newrow != *row))
{
*col = newcol;
*row = newrow;
if (tile)
gimp_tile_unref (tile, TRUE);
tile = gimp_drawable_get_tile (drawable, TRUE, *row, *col);
gimp_tile_ref (tile);
}
{
*col = newcol;
*row = newrow;
if (tile)
gimp_tile_unref (tile, TRUE);
tile = gimp_drawable_get_tile (drawable, TRUE, *row, *col);
gimp_tile_ref (tile);
}
pixel = tile->data + tile->bpp * (tile->ewidth * newrowoff + newcoloff);
dx = xr - x; dy = yr - y;
@ -831,54 +844,53 @@ rpnt (GimpDrawable *drawable,
val = inten * exp (-rs / PSV);
for (b = 0; b < bytes; b++)
{
if (svals.invers == FALSE)
new = pixel[b];
else
new = 255 - pixel[b];
{
if (svals.invers == FALSE)
new = pixel[b];
else
new = 255 - pixel[b];
if (svals.preserve_luminosity==TRUE)
{
if (new < color[b])
new *= (1.0 - val * (1.0 - svals.opacity));
else
{
new -= val * color[b] * (1.0 - svals.opacity);
if (new < 0.0)
new = 0.0;
if (svals.preserve_luminosity==TRUE)
{
if (new < color[b])
new *= (1.0 - val * (1.0 - svals.opacity));
else
{
new -= val * color[b] * (1.0 - svals.opacity);
if (new < 0.0)
new = 0.0;
}
}
new *= 1.0 - val * svals.opacity;
new += val * color[b];
}
}
new *= 1.0 - val * svals.opacity;
new += val * color[b];
if (new > 255)
new = 255;
if (new > 255) new = 255;
if (svals.invers != FALSE)
pixel[b] = 255 - new;
else
pixel[b] = new;
}
if (svals.invers != FALSE)
pixel[b] = 255 - new;
else
pixel[b] = new;
}
}
return tile;
}
static void
fspike (GimpPixelRgn *src_rgn,
GimpPixelRgn *dest_rgn,
gint gray,
gint x1,
gint y1,
gint x2,
gint y2,
gint xr,
gint yr,
gint tile_width,
gint tile_height,
gdouble inten,
gdouble length,
gdouble angle,
GimpPixelRgn *dest_rgn,
gint gray,
gint x1,
gint y1,
gint x2,
gint y2,
gint xr,
gint yr,
gint tile_width,
gint tile_height,
gdouble inten,
gdouble length,
gdouble angle,
GRand *gr)
{
const gdouble efac = 2.0;
@ -922,36 +934,36 @@ fspike (GimpPixelRgn *src_rgn,
for (i = 0; i < svals.spike_pts; i++)
{
if (svals.colortype == NATURAL)
gimp_pixel_rgn_get_pixel (dest_rgn, pixel, xr, yr);
gimp_pixel_rgn_get_pixel (src_rgn, pixel, xr, yr);
color[0] = pixel[0];
color[1] = pixel[1];
color[2] = pixel[2];
if (svals.invers)
{
color[0] = 255 - color[0];
color[1] = 255 - color[1];
color[2] = 255 - color[2];
{
color[0] = 255 - color[0];
color[1] = 255 - color[1];
color[2] = 255 - color[2];
}
if (svals.random_hue > 0.0 || svals.random_saturation > 0.0)
{
r = 255 - color[0];
g = 255 - color[1];
b = 255 - color[2];
gimp_rgb_to_hsv_int (&r, &g, &b);
r+= svals.random_hue * g_rand_double_range (gr, -.5, .5) * 255;
if (r >= 255)
r -= 255;
else if (r < 0)
r += 255;
b+= (svals.random_saturation * g_rand_double_range (gr, -.5, .5))*255;
if (b > 255) b = 255;
gimp_hsv_to_rgb_int (&r, &g, &b);
color[0] = 255 - r;
color[1] = 255 - g;
color[2] = 255 - b;
}
r = 255 - color[0];
g = 255 - color[1];
b = 255 - color[2];
gimp_rgb_to_hsv_int (&r, &g, &b);
r+= svals.random_hue * g_rand_double_range (gr, -.5, .5) * 255;
if (r >= 255)
r -= 255;
else if (r < 0)
r += 255;
b+= (svals.random_saturation * g_rand_double_range (gr, -.5, .5))*255;
if (b > 255) b = 255;
gimp_hsv_to_rgb_int (&r, &g, &b);
color[0] = 255 - r;
color[1] = 255 - g;
color[2] = 255 - b;
}
dx = 0.2 * cos (theta * G_PI / 180.0);
dy = 0.2 * sin (theta * G_PI / 180.0);
@ -960,23 +972,31 @@ fspike (GimpPixelRgn *src_rgn,
rpos = 0.2;
do
{
sfac = inten * exp (-pow (rpos / length, efac));
ok = FALSE;
{
sfac = inten * exp (-pow (rpos / length, efac));
ok = FALSE;
in = 0.2 * sfac;
if (in > 0.01)
in = 0.2 * sfac;
if (in > 0.01)
ok = TRUE;
tile = rpnt (dest_rgn->drawable, tile, x1, y1, x2, y2, xrt, yrt, tile_width, tile_height, &row, &col, bytes, in, color);
tile = rpnt (dest_rgn->drawable, tile, x1, y1, x2, y2, xrt + 1.0, yrt, tile_width, tile_height, &row, &col, bytes, in, color);
tile = rpnt (dest_rgn->drawable, tile, x1, y1, x2, y2, xrt + 1.0, yrt + 1.0, tile_width, tile_height, &row, &col, bytes, in, color);
tile = rpnt (dest_rgn->drawable, tile, x1, y1, x2, y2, xrt, yrt + 1.0, tile_width, tile_height, &row, &col, bytes, in, color);
tile = rpnt (dest_rgn->drawable, tile, x1, y1, x2, y2,
xrt, yrt, tile_width, tile_height,
&row, &col, bytes, in, color);
tile = rpnt (dest_rgn->drawable, tile, x1, y1, x2, y2,
xrt + 1.0, yrt, tile_width, tile_height,
&row, &col, bytes, in, color);
tile = rpnt (dest_rgn->drawable, tile, x1, y1, x2, y2,
xrt + 1.0, yrt + 1.0, tile_width, tile_height,
&row, &col, bytes, in, color);
tile = rpnt (dest_rgn->drawable, tile, x1, y1, x2, y2,
xrt, yrt + 1.0, tile_width, tile_height,
&row, &col, bytes, in, color);
xrt += dx;
yrt += dy;
rpos += 0.2;
} while (ok);
xrt += dx;
yrt += dy;
rpos += 0.2;
} while (ok);
theta += 360.0 / svals.spike_pts;
}
@ -987,9 +1007,8 @@ fspike (GimpPixelRgn *src_rgn,
static void
sparkle_ok_callback (GtkWidget *widget,
gpointer data)
gpointer data)
{
sint.run = TRUE;
gtk_widget_destroy (GTK_WIDGET (data));
}