+#!perl -w
+use strict;
+use Imager qw(:handy);
+use Test::More tests => 114;
+use Imager::Test qw(is_image is_imaged);
+
+-d "testout" or mkdir "testout";
+
+Imager::init_log("testout/t62compose.log", 1);
+
+my @files;
+
+my %types =
+ (
+ double =>
+ {
+ blue => NCF(0, 0, 1),
+ red => NCF(1, 0, 0),
+ green2 => NCF(0, 1, 0, 0.5),
+ green2_on_blue => NCF(0, 0.5, 0.5),
+ red3_on_blue => NCF(1/3, 0, 2/3),
+ green6_on_blue => NCF(0, 1/6, 5/6),
+ red2_on_blue => NCF(0.5, 0, 0.5),
+ green4_on_blue => NCF(0, 0.25, 0.75),
+ gray100 => NCF(1.0, 0, 0),
+ gray50 => NCF(0.5, 0, 0),
+ is_image => \&is_imaged,
+ },
+ 8 =>
+ {
+ blue => NC(0, 0, 255),
+ red => NC(255, 0, 0),
+ green2 => NC(0, 255, 0, 128),
+ green2_on_blue => NC(0, 128, 127),
+ red3_on_blue => NC(85, 0, 170),
+ green6_on_blue => NC(0, 42, 213),
+ red2_on_blue => NC(128, 0, 127),
+ green4_on_blue => NC(0, 64, 191),
+ gray100 => NC(255, 0, 0),
+ gray50 => NC(128, 0, 0),
+ is_image => \&is_image,
+ },
+ );
+
+for my $type_id (sort keys %types) {
+ my $type = $types{$type_id};
+ my $blue = $type->{blue};
+ my $red = $type->{red};
+ my $green2 = $type->{green2};
+ my $green2_on_blue = $type->{green2_on_blue};
+ my $red3_on_blue = $type->{red3_on_blue};
+ my $green6_on_blue = $type->{green6_on_blue};
+ my $red2_on_blue = $type->{red2_on_blue};
+ my $green4_on_blue = $type->{green4_on_blue};
+ my $gray100 = $type->{gray100};
+ my $gray50 = $type->{gray50};
+ my $is_image = $type->{is_image};
+
+ print "# type $type_id\n";
+ my $targ = Imager->new(xsize => 100, ysize => 100, bits => $type_id);
+ $targ->box(color => $blue, filled => 1);
+ is($targ->type, "direct", "check target image type");
+ is($targ->bits, $type_id, "check target bits");
+
+ my $src = Imager->new(xsize => 40, ysize => 40, channels => 4, bits => $type_id);
+ $src->box(filled => 1, color => $red, xmax => 19, ymax => 19);
+ $src->box(filled => 1, xmin => 20, color => $green2);
+ save_to($src, "${type_id}_src");
+
+ my $mask_ones = Imager->new(channels => 1, xsize => 40, ysize => 40, bits => $type_id);
+ $mask_ones->box(filled => 1, color => NC(255, 255, 255));
+
+
+ # mask or full mask, should be the same
+ for my $mask_info ([ "nomask" ], [ "fullmask", mask => $mask_ones ]) {
+ my ($mask_type, @mask_extras) = @$mask_info;
+ print "# $mask_type\n";
+ {
+ my $cmp = $targ->copy;
+ $cmp->box(filled => 1, color => $red,
+ xmin=> 5, ymin => 10, xmax => 24, ymax => 29);
+ $cmp->box(filled => 1, color => $green2_on_blue,
+ xmin => 25, ymin => 10, xmax => 44, ymax => 49);
+ {
+ my $work = $targ->copy;
+ ok($work->compose(src => $src, tx => 5, ty => 10, @mask_extras),
+ "$mask_type - simple compose");
+ $is_image->($work, $cmp, "check match");
+ save_to($work, "${type_id}_${mask_type}_simple");
+ }
+ { # >1 opacity
+ my $work = $targ->copy;
+ ok($work->compose(src => $src, tx => 5, ty => 10, opacity => 2.0, @mask_extras),
+ "$mask_type - compose with opacity > 1.0 acts like opacity=1.0");
+ $is_image->($work, $cmp, "check match");
+ }
+ { # 0 opacity is a failure
+ my $work = $targ->copy;
+ ok(!$work->compose(src => $src, tx => 5, ty => 10, opacity => 0.0, @mask_extras),
+ "$mask_type - compose with opacity = 0 is an error");
+ is($work->errstr, "opacity must be positive", "check message");
+ }
+ }
+ { # compose at 1/3
+ my $work = $targ->copy;
+ ok($work->compose(src => $src, tx => 7, ty => 33, opacity => 1/3, @mask_extras),
+ "$mask_type - simple compose at 1/3");
+ my $cmp = $targ->copy;
+ $cmp->box(filled => 1, color => $red3_on_blue,
+ xmin => 7, ymin => 33, xmax => 26, ymax => 52);
+ $cmp->box(filled => 1, color => $green6_on_blue,
+ xmin => 27, ymin => 33, xmax => 46, ymax => 72);
+ $is_image->($work, $cmp, "check match");
+ }
+ { # targ off top left
+ my $work = $targ->copy;
+ ok($work->compose(src => $src, tx => -5, ty => -3, @mask_extras),
+ "$mask_type - compose off top left");
+ my $cmp = $targ->copy;
+ $cmp->box(filled => 1, color => $red,
+ xmin=> 0, ymin => 0, xmax => 14, ymax => 16);
+ $cmp->box(filled => 1, color => $green2_on_blue,
+ xmin => 15, ymin => 0, xmax => 34, ymax => 36);
+ $is_image->($work, $cmp, "check match");
+ }
+ { # targ off bottom right
+ my $work = $targ->copy;
+ ok($work->compose(src => $src, tx => 65, ty => 67, @mask_extras),
+ "$mask_type - targ off bottom right");
+ my $cmp = $targ->copy;
+ $cmp->box(filled => 1, color => $red,
+ xmin=> 65, ymin => 67, xmax => 84, ymax => 86);
+ $cmp->box(filled => 1, color => $green2_on_blue,
+ xmin => 85, ymin => 67, xmax => 99, ymax => 99);
+ $is_image->($work, $cmp, "check match");
+ }
+ { # src off top left
+ my $work = $targ->copy;
+ my @more_mask_extras;
+ if (@mask_extras) {
+ push @more_mask_extras,
+ (
+ mask_left => -5,
+ mask_top => -15,
+ );
+ }
+ ok($work->compose(src => $src, tx => 10, ty => 20,
+ src_left => -5, src_top => -15,
+ @mask_extras, @more_mask_extras),
+ "$mask_type - source off top left");
+ my $cmp = $targ->copy;
+ $cmp->box(filled => 1, color => $red,
+ xmin=> 15, ymin => 35, xmax => 34, ymax => 54);
+ $cmp->box(filled => 1, color => $green2_on_blue,
+ xmin => 35, ymin => 35, xmax => 54, ymax => 74);
+ $is_image->($work, $cmp, "check match");
+ }
+ {
+ # src off bottom right
+ my $work = $targ->copy;
+ ok($work->compose(src => $src, tx => 10, ty => 20,
+ src_left => 10, src_top => 15,
+ width => 40, height => 40, @mask_extras),
+ "$mask_type - source off bottom right");
+ my $cmp = $targ->copy;
+ $cmp->box(filled => 1, color => $red,
+ xmin=> 10, ymin => 20, xmax => 19, ymax => 24);
+ $cmp->box(filled => 1, color => $green2_on_blue,
+ xmin => 20, ymin => 20, xmax => 39, ymax => 44);
+ $is_image->($work, $cmp, "check match");
+ }
+ {
+ # simply out of bounds
+ my $work = $targ->copy;
+ ok(!$work->compose(src => $src, tx => 100, @mask_extras),
+ "$mask_type - off the right of the target");
+ $is_image->($work, $targ, "no changes");
+ ok(!$work->compose(src => $src, ty => 100, @mask_extras),
+ "$mask_type - off the bottom of the target");
+ $is_image->($work, $targ, "no changes");
+ ok(!$work->compose(src => $src, tx => -40, @mask_extras),
+ "$mask_type - off the left of the target");
+ $is_image->($work, $targ, "no changes");
+ ok(!$work->compose(src => $src, ty => -40, @mask_extras),
+ "$mask_type - off the top of the target");
+ $is_image->($work, $targ, "no changes");
+ }
+ }
+
+ # masked tests
+ my $mask = Imager->new(xsize => 40, ysize => 40, channels => 1, bits => $type_id);
+ $mask->box(filled => 1, xmax => 19, color => $gray100);
+ $mask->box(filled => 1, xmin => 20, ymax => 14, xmax => 34,
+ color => $gray50);
+ is($mask->bits, $type_id, "check mask bits");
+ {
+ my $work = $targ->copy;
+ ok($work->compose(src => $src, tx => 5, ty => 7,
+ mask => $mask),
+ "simple draw masked");
+ my $cmp = $targ->copy;
+ $cmp->box(filled => 1, color => $red,
+ xmin => 5, ymin => 7, xmax => 24, ymax => 26);
+ $cmp->box(filled => 1, color => $green4_on_blue,
+ xmin => 25, ymin => 7, xmax => 39, ymax => 21);
+ $is_image->($work, $cmp, "check match");
+ save_to($work, "${type_id}_simp_masked");
+ save_to($work, "${type_id}_simp_masked_cmp");
+ }
+ {
+ my $work = $targ->copy;
+ ok($work->compose(src => $src, tx => 5, ty => 7,
+ mask_left => 5, mask_top => 2,
+ mask => $mask),
+ "draw with mask offset");
+ my $cmp = $targ->copy;
+ $cmp->box(filled => 1, color => $red,
+ xmin => 5, ymin => 7, xmax => 19, ymax => 26);
+ $cmp->box(filled => 1, color => $red2_on_blue,
+ xmin => 20, ymin => 7, xmax => 24, ymax => 19);
+ $cmp->box(filled => 1, color => $green4_on_blue,
+ xmin => 25, ymin => 7, xmax => 34, ymax => 19);
+ $is_image->($work, $cmp, "check match");
+ }
+ {
+ my $work = $targ->copy;
+ ok($work->compose(src => $src, tx => 5, ty => 7,
+ mask_left => -3, mask_top => -2,
+ mask => $mask),
+ "draw with negative mask offsets");
+ my $cmp = $targ->copy;
+ $cmp->box(filled => 1, color => $red,
+ xmin => 8, ymin => 9, xmax => 24, ymax => 26);
+ $cmp->box(filled => 1, color => $green2_on_blue,
+ xmin => 25, ymin => 9, xmax => 27, ymax => 46);
+ $cmp->box(filled => 1, color => $green4_on_blue,
+ xmin => 28, ymin => 9, xmax => 42, ymax => 23);
+ $is_image->($work, $cmp, "check match");
+ }
+}
+
+unless ($ENV{IMAGER_KEEP_FILES}) {
+ unlink @files;
+}
+
+sub save_to {
+ my ($im, $name) = @_;
+
+ my $type = $ENV{IMAGER_SAVE_TYPE} || "ppm";
+ $name = "testout/t62_$name.$type";
+ $im->write(file => $name,
+ pnm_write_wide_data => 1);
+ push @files, $name;
+}
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