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#!/opt/bin/perl
# slightly edited by pcg@goof.com
use Gimp qw(:auto);
use Gimp::Fu;
sub warp_sharp {
my ($img, $drw, $edge_strength, $blur_strength,
$bump_depth, $displace_amount)=@_;
my $drawable_width=$drw->width;
my $drawable_height=$drw->height;
my $drawable_type=($drw->type);
my $edge_layer=gimp_layer_copy($drw,0);
my $x_displace_layer=
$img->layer_new($drawable_width, $drawable_height,
$drawable_type, "Displace X", 100, 0);
my $y_displace_layer=
$img->layer_new($drawable_width, $drawable_height,
$drawable_type, "Displace Y", 100, 0);
my @selection_info=$img->selection_bounds;
my $has_selection=$selection_info[0];
my $old_selection;
my $bump_xoff;
my $bump_yoff;
my $version=1;
# Gimp::set_trace(TRACE_ALL);
$img->undo_group_start;
if ($has_selection) {
$old_selection=$img->gimp_selection_save;
$img->selection_grow($blur_strength + $bump_depth + $displace_amount);
$bump_xoff=$selection_info[1];
$bump_yoff=$selection_info[2];
}
$x_displace_layer->fill(1 + $version);
$y_displace_layer->fill(1 + $version);
$img->add_layer($edge_layer,-1);
$img->add_layer($x_displace_layer,-1);
$img->add_layer($y_displace_layer,-1);
# added another parameter in edge detect plugin... I'm assuming it was
# previously differential?
# TODO: add warp type enums
plug_in_edge($img,$edge_layer,$edge_strength,1,4);
plug_in_gauss_iir($img, $edge_layer, $blur_strength, 1, 1)
if ($blur_strength >= 1);
plug_in_bump_map($img,$x_displace_layer,$edge_layer, 0, 30,
$bump_depth, $bump_xoff,$bump_yoff, 0,0,0,0,0);
plug_in_bump_map($img,$y_displace_layer,$edge_layer, 270, 30,
$bump_depth, $bump_xoff,$bump_yoff, 0,0,0,0,0);
if ($has_selection) {
$old_selection->gimp_selection_load;
$old_selection->remove_channel;
# will cause a crash:
# $old_selection->gimp_channel_delete;
}
plug_in_displace($img,$drw, $displace_amount, $displace_amount, 1,1,
$x_displace_layer, $y_displace_layer, 1);
$img->remove_layer($edge_layer);
$img->remove_layer($x_displace_layer);
$img->remove_layer($y_displace_layer);
$img->undo_group_end;
gimp_displays_flush();
return undef;
}
register
"plug_in_warp_sharp",
"Sharpen the current drawable",
"Sharpen the current drawable by squeezing unsharp edges. Algorithm described by Joern Loviscach in c't 22/1999, p 236.",
"Simon Budig <simon\@gimp.org>, Peter Daum <gator\@cs.tu-berlin.de>",
"Simon Budig, Peter Daum",
"2000-05-11",
N_"<Image>/Filters/Enhance/Warp Sharp...",
"RGB*, GRAY*",
[
[PF_SLIDER, "edge_detection", "Edge detection", 7, [1, 10, 0.1]],
[PF_SLIDER, "blur_radius", "Blur radius", 3, [0, 10, 0.1]],
[PF_SLIDER, "bump_depth", "Bump depth", 2, [1, 10, 1]],
[PF_SLIDER, "intensity", "Displace Intensity", 2.5, [0.1, 10, 0.1]]
],
[],
['gimp-1.1'],
\&warp_sharp;
exit main;
=head1 LICENSE
Copyright Simon Budig, Peter Daum. (original scheme by Simon Budig).
Distrubuted under the terms of the GNU Publice License, v2 or higher.
=cut
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