#!perl -w
use strict;
use Imager qw(:handy);
-use Test::More tests => 73;
+use Test::More tests => 113;
+
+-d "testout" or mkdir "testout";
+
Imager::init_log("testout/t61filters.log", 1);
-use Imager::Test qw(is_image_similar test_image is_image);
+use Imager::Test qw(is_image_similar test_image is_image is_color4 is_fcolor4);
# meant for testing the filters themselves
my $imbase = test_image();
'testout/t61_contrast.ppm');
# this one's kind of cool
-test($imbase, {type=>'conv', coef=>[ -0.5, 1, -0.5, ], },
- 'testout/t61_conv.ppm');
+test($imbase, {type=>'conv', coef=>[ 0.3, 1, 0.3, ], },
+ 'testout/t61_conv_blur.ppm');
+
+{
+ my $work8 = $imbase->copy;
+ ok(!$work8->filter(type => "conv", coef => "ABC"),
+ "coef not an array");
+}
+{
+ my $work8 = $imbase->copy;
+ ok(!$work8->filter(type => "conv", coef => [ -1, 2, -1 ]),
+ "should fail if sum of coef is 0");
+ is($work8->errstr, "sum of coefficients is zero", "check message");
+}
+
+{
+ my $work8 = $imbase->copy;
+ my $work16 = $imbase->to_rgb16;
+ my $coef = [ -0.2, 1, -0.2 ];
+ ok($work8->filter(type => "conv", coef => $coef),
+ "filter 8 bit image");
+ ok($work16->filter(type => "conv", , coef => $coef),
+ "filter 16 bit image");
+ is_image_similar($work8, $work16, 80000, "8 and 16 bit conv match");
+}
{
my $gauss = test($imbase, {type=>'gaussian', stddev=>5 },
test($imbase, {type=>'hardinvert'}, 'testout/t61_hardinvert.ppm');
+{ # invert - 8 bit
+ my $im = Imager->new(xsize => 1, ysize => 1, channels => 4);
+ ok($im, "make test image for invert test");
+ ok($im->setpixel(x => 0, y => 0, color => "000010C0"),
+ "set a test pixel");
+ my $copy = $im->copy;
+ ok($im->filter(type => "hardinvert"), "hardinvert it");
+ is_color4($im->getpixel(x => 0, y => 0), 255, 255, 0xEF, 0xC0,
+ "check only colour inverted");
+ ok($copy->filter(type => "hardinvertall"), "hardinvertall copy");
+ is_color4($copy->getpixel(x => 0, y => 0), 255, 255, 0xEF, 0x3f,
+ "check all inverted");
+}
+
+{ # invert - double image
+ my $im = Imager->new(xsize => 1, ysize => 1, channels => 4, bits => "double");
+ ok($im, "make double test image for invert test");
+ ok($im->setpixel(x => 0, y => 0, color => Imager::Color::Float->new(0, 0, 0.125, 0.75)),
+ "set a test pixel");
+ my $copy = $im->copy;
+ ok($im->filter(type => "hardinvert"), "hardinvert it");
+ is_fcolor4($im->getpixel(x => 0, y => 0, type => "double"),
+ 1.0, 1.0, 0.875, 0.75, 1e-5,
+ "check only colour inverted");
+ ok($copy->filter(type => "hardinvertall"), "hardinvertall copy");
+ is_fcolor4($copy->getpixel(x => 0, y => 0, type =>"double"),
+ 1.0, 1.0, 0.875, 0.25, 1e-5,
+ "check all inverted");
+}
+
test($imbase, {type=>'noise'}, 'testout/t61_noise.ppm');
test($imbase, {type=>'radnoise'}, 'testout/t61_radnoise.ppm');
segments=>$f3, super_sample=>'grid',
ftype=>'radial_square', combine=>'color' },
'testout/t61_fount_gimp.ppm');
+{ # test new fountain with no parameters
+ my $warn = '';
+ local $SIG{__WARN__} = sub { $warn .= "@_" };
+ my $f4 = Imager::Fountain->read();
+ ok(!$f4, "read with no parameters does nothing");
+ like($warn, qr/Nothing to do!/, "check the warning");
+}
+{ # test with missing file
+ my $warn = '';
+ local $SIG{__WARN__} = sub { $warn .= "@_" };
+ my $f = Imager::Fountain->read(gimp => "no-such-file");
+ ok(!$f, "try to read a fountain defintion that doesn't exist");
+ is($warn, "", "should be no warning");
+ like(Imager->errstr, qr/^Cannot open no-such-file: /, "check message");
+}
+SKIP:
+{
+ my $fh = IO::File->new("testimg/gimpgrad", "r");
+ ok($fh, "opened gradient")
+ or skip "Couldn't open gradient: $!", 1;
+ my $f = Imager::Fountain->read(gimp => $fh);
+ ok($f, "read gradient from file handle");
+}
+{
+ # not a gradient
+ my $f = Imager::Fountain->read(gimp => "t/t61filters.t");
+ ok(!$f, "fail to read non-gradient");
+ is(Imager->errstr, "t/t61filters.t is not a GIMP gradient file",
+ "check error message");
+}
+{ # an invalid gradient file
+ my $f = Imager::Fountain->read(gimp => "testimg/gradbad.ggr");
+ ok(!$f, "fail to read bad gradient (bad seg count)");
+ is(Imager->errstr, "testimg/gradbad.ggr is missing the segment count",
+ "check error message");
+}
+{ # an invalid gradient file
+ my $f = Imager::Fountain->read(gimp => "testimg/gradbad2.ggr");
+ ok(!$f, "fail to read bad gradient (bad segment)");
+ is(Imager->errstr, "Bad segment definition",
+ "check error message");
+}
test($imbase, { type=>'unsharpmask', stddev=>2.0 },
'testout/t61_unsharp.ppm');
test($imbase, {type=>'conv', coef=>[ -1, 3, -1, ], },
cmp_ok($im->errstr, '=~', 'No color named', "check error message");
}
+{
+ # test simple gradient creation
+ my @colors = map Imager::Color->new($_), qw/white blue red/;
+ my $s = Imager::Fountain->simple(positions => [ 0, 0.3, 1.0 ],
+ colors => \@colors);
+ ok($s, "made simple gradient");
+ my $start = $s->[0];
+ is($start->[0], 0, "check start of first correct");
+ is_color4($start->[3], 255, 255, 255, 255, "check color at start");
+}
+{
+ # simple gradient error modes
+ {
+ my $warn = '';
+ local $SIG{__WARN__} = sub { $warn .= "@_" };
+ my $s = Imager::Fountain->simple();
+ ok(!$s, "no parameters to simple()");
+ like($warn, qr/Nothing to do/);
+ }
+ {
+ my $s = Imager::Fountain->simple(positions => [ 0, 1 ],
+ colors => [ NC(0, 0, 0) ]);
+ ok(!$s, "mismatch of positions and colors fails");
+ is(Imager->errstr, "positions and colors must be the same size",
+ "check message");
+ }
+ {
+ my $s = Imager::Fountain->simple(positions => [ 0 ],
+ colors => [ NC(0, 0, 0) ]);
+ ok(!$s, "not enough positions");
+ is(Imager->errstr, "not enough segments");
+ }
+}
+
{
my $im = Imager->new(xsize=>100, ysize=>100);
# build the gradient the hard way - linear from black to white,
or print "# ",$copy->errstr,"\n";
}
else {
+ diag($copy->errstr);
SKIP:
{
skip("couldn't filter", 1);
projects / imager.git / blobdiff