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Bill Skaggs <weskaggs@primate.ucdavis.edu>

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* plug-ins/common/ripple.c:  add a "phase shift" control,
	for interactive use only.  Fixes bug #515144.

svn path=/trunk/; revision=24845
This commit is contained in:
William Skaggs
2008-02-10 04:29:46 +00:00
parent a0bcf5f09f
commit 3219763d6d
2 changed files with 31 additions and 6 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2008-02-09 Bill Skaggs <weskaggs@primate.ucdavis.edu>
* plug-ins/common/ripple.c: add a "phase shift" control,
for interactive use only. Fixes bug #515144.
2008-02-09 Michael Natterer <mitch@gimp.org>
* tools/pdbgen/pdb/color.pdb: don't include <gegl.h>

32
plug-ins/common/ripple.c
View File

@ -57,6 +57,7 @@ typedef struct
gint waveform;
gboolean antialias;
gboolean tile;
gint phase_shift;
} RippleValues;
@ -99,7 +100,8 @@ static RippleValues rvals =
WRAP, /* edges */
SINE, /* waveform */
TRUE, /* antialias */
FALSE /* tile */
FALSE, /* tile */
0 /* phase shift */
};
/***** Functions *****/
@ -603,7 +605,7 @@ ripple_dialog (GimpDrawable *drawable)
gtk_widget_show (table);
table = gtk_table_new (2, 3, FALSE);
table = gtk_table_new (3, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_box_pack_start (GTK_BOX (main_vbox), table, FALSE, FALSE, 0);
@ -634,6 +636,19 @@ ripple_dialog (GimpDrawable *drawable)
G_CALLBACK (gimp_preview_invalidate),
preview);
/* Phase Shift */
scale_data = gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
_("Phase _shift:"), SCALE_WIDTH, 0,
rvals.phase_shift, 0, 360, 1, 15, 0,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (scale_data, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&rvals.phase_shift);
g_signal_connect_swapped (scale_data, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_widget_show (frame);
gtk_widget_show (table);
gtk_widget_show (dialog);
@ -680,15 +695,20 @@ average_two_pixels (guchar *dest,
static gdouble
displace_amount (gint location)
{
gdouble phi = rvals.phase_shift / 360.0;
gdouble lambda;
switch (rvals.waveform)
{
case SINE:
return (rvals.amplitude *
sin (location * (2 * G_PI) / (gdouble) rvals.period));
sin (2 * G_PI * (location / (gdouble) rvals.period - phi)));
case SAWTOOTH:
return (rvals.amplitude *
(fabs ((((location % rvals.period) /
(gdouble) rvals.period) * 4) - 2) - 1));
lambda = location % rvals.period - phi * rvals.period;
if (lambda < 0)
lambda += rvals.period;
return (rvals.amplitude * (fabs (((lambda / rvals.period) * 4) - 2) - 1));
}
return 0.0;