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#!perl -w
use strict;
use Test::More tests => 77;
use Imager;
use Imager::Test qw(is_color3 is_image is_imaged test_image_double test_image isnt_image);
#$Imager::DEBUG=1;
Imager::init('log'=>'testout/t64copyflip.log');
my $img=Imager->new() or die "unable to create image object\n";
$img->open(file=>'testimg/scale.ppm',type=>'pnm');
my $nimg = $img->copy();
ok($nimg, "copy returned something");
# test if ->copy() works
my $diff = Imager::i_img_diff($img->{IMG}, $nimg->{IMG});
is_image($img, $nimg, "copy matches source");
# test if ->flip(dir=>'h')->flip(dir=>'h') doesn't alter the image
$nimg->flip(dir=>"h")->flip(dir=>"h");
is_image($nimg, $img, "double horiz flipped matches original");
# test if ->flip(dir=>'v')->flip(dir=>'v') doesn't alter the image
$nimg->flip(dir=>"v")->flip(dir=>"v");
is_image($nimg, $img, "double vertically flipped image matches original");
# test if ->flip(dir=>'h')->flip(dir=>'v') is same as ->flip(dir=>'hv')
$nimg->flip(dir=>"v")->flip(dir=>"h")->flip(dir=>"hv");;
is_image($img, $nimg, "check flip with hv matches flip v then flip h");
{
my $imsrc = test_image_double;
my $imcp = $imsrc->copy;
is_imaged($imsrc, $imcp, "copy double image");
$imcp->flip(dir=>"v")->flip(dir=>"v");
is_imaged($imsrc, $imcp, "flip v twice");
$imcp->flip(dir=>"h")->flip(dir=>"h");
is_imaged($imsrc, $imcp, "flip h twice");
$imcp->flip(dir=>"h")->flip(dir=>"v")->flip(dir=>"hv");
is_imaged($imsrc, $imcp, "flip h,v,hv twice");
}
{
my $impal = test_image()->to_paletted;
my $imcp = $impal->copy;
is($impal->type, "paletted", "check paletted test image is");
is($imcp->type, "paletted", "check copy test image is paletted");
ok($impal->flip(dir => "h"), "flip paletted h");
isnt_image($impal, $imcp, "check it changed");
ok($impal->flip(dir => "v"), "flip paletted v");
ok($impal->flip(dir => "hv"), "flip paletted hv");
is_image($impal, $imcp, "should be back to original image");
is($impal->type, "paletted", "and still paletted");
}
rot_test($img, 90, 4);
rot_test($img, 180, 2);
rot_test($img, 270, 4);
rot_test($img, 0, 1);
my $pimg = $img->to_paletted();
rot_test($pimg, 90, 4);
rot_test($pimg, 180, 2);
rot_test($pimg, 270, 4);
rot_test($pimg, 0, 1);
my $timg = $img->rotate(right=>90)->rotate(right=>270);
is(Imager::i_img_diff($img->{IMG}, $timg->{IMG}), 0,
"check rotate 90 then 270 matches original");
$timg = $img->rotate(right=>90)->rotate(right=>180)->rotate(right=>90);
is(Imager::i_img_diff($img->{IMG}, $timg->{IMG}), 0,
"check rotate 90 then 180 then 90 matches original");
# this could use more tests
my $rimg = $img->rotate(degrees=>10);
ok($rimg, "rotation by 10 degrees gave us an image");
if (!$rimg->write(file=>"testout/t64_rot10.ppm")) {
print "# Cannot save: ",$rimg->errstr,"\n";
}
# rotate with background
$rimg = $img->rotate(degrees=>10, back=>Imager::Color->new(builtin=>'red'));
ok($rimg, "rotate with background gave us an image");
if (!$rimg->write(file=>"testout/t64_rot10_back.ppm")) {
print "# Cannot save: ",$rimg->errstr,"\n";
}
{
# rotate with text background
my $rimg = $img->rotate(degrees => 45, back => '#FF00FF');
ok($rimg, "rotate with background as text gave us an image");
# check the color set correctly
my $c = $rimg->getpixel(x => 0, 'y' => 0);
is_deeply([ 255, 0, 255 ], [ ($c->rgba)[0, 1, 2] ],
"check background set correctly");
# check error handling for background color
$rimg = $img->rotate(degrees => 45, back => "some really unknown color");
ok(!$rimg, "should fail due to bad back color");
cmp_ok($img->errstr, '=~', "^No color named ", "check error message");
}
my $trimg = $img->matrix_transform(matrix=>[ 1.2, 0, 0,
0, 1, 0,
0, 0, 1]);
ok($trimg, "matrix_transform() returned an image");
$trimg->write(file=>"testout/t64_trans.ppm")
or print "# Cannot save: ",$trimg->errstr,"\n";
$trimg = $img->matrix_transform(matrix=>[ 1.2, 0, 0,
0, 1, 0,
0, 0, 1],
back=>Imager::Color->new(builtin=>'blue'));
ok($trimg, "matrix_transform() with back returned an image");
$trimg->write(file=>"testout/t64_trans_back.ppm")
or print "# Cannot save: ",$trimg->errstr,"\n";
sub rot_test {
my ($src, $degrees, $count) = @_;
my $cimg = $src->copy();
my $in;
for (1..$count) {
$in = $cimg;
$cimg = $cimg->rotate(right=>$degrees)
or last;
}
SKIP:
{
ok($cimg, "got a rotated image")
or skip("no image to check", 4);
my $diff = Imager::i_img_diff($src->{IMG}, $cimg->{IMG});
is($diff, 0, "check it matches source")
or skip("didn't match", 3);
# check that other parameters match
is($src->type, $cimg->type, "type check");
is($src->bits, $cimg->bits, "bits check");
is($src->getchannels, $cimg->getchannels, "channels check");
}
}
{ # http://rt.cpan.org/NoAuth/Bug.html?id=9672
my $warning;
local $SIG{__WARN__} =
sub {
$warning = "@_";
my $printed = $warning;
$printed =~ s/\n$//;
$printed =~ s/\n/\n\#/g;
print "# ",$printed, "\n";
};
my $img = Imager->new(xsize=>10, ysize=>10);
$img->copy();
cmp_ok($warning, '=~', 'void', "correct warning");
cmp_ok($warning, '=~', 't64copyflip\\.t', "correct file");
$warning = '';
$img->rotate(degrees=>5);
cmp_ok($warning, '=~', 'void', "correct warning");
cmp_ok($warning, '=~', 't64copyflip\\.t', "correct file");
$warning = '';
$img->matrix_transform(matrix=>[1, 1, 1]);
cmp_ok($warning, '=~', 'void', "correct warning");
cmp_ok($warning, '=~', 't64copyflip\\.t', "correct file");
}
{
# 29936 - matrix_transform() should use fabs() instead of abs()
# range checking sz
# this meant that when sz was < 1 (which it often is for these
# transformations), it treated the values out of range, producing a
# blank output image
my $src = Imager->new(xsize => 20, ysize => 20);
$src->box(filled => 1, color => 'FF0000');
my $out = $src->matrix_transform(matrix => [ 1, 0, 0,
0, 1, 0,
0, 0, 0.9999 ])
or print "# ", $src->errstr, "\n";
my $blank = Imager->new(xsize => 20, ysize => 20);
# they have to be different, surely that would be easy
my $diff = Imager::i_img_diff($out->{IMG}, $blank->{IMG});
ok($diff, "RT#29936 - check non-blank output");
}
{
my $im = Imager->new(xsize => 10, ysize => 10, channels => 4);
$im->box(filled => 1, color => 'FF0000');
my $back = Imager::Color->new(0, 0, 0, 0);
my $rot = $im->rotate(degrees => 10, back => $back);
# drop the alpha and make sure there's only 2 colors used
my $work = $rot->convert(preset => 'noalpha');
my $im_pal = $work->to_paletted(make_colors => 'mediancut');
my @colors = $im_pal->getcolors;
is(@colors, 2, "should be only 2 colors");
@colors = sort { ($a->rgba)[0] <=> ($b->rgba)[0] } @colors;
is_color3($colors[0], 0, 0, 0, "check we got black");
is_color3($colors[1], 255, 0, 0, "and red");
}
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