Created
November 24, 2016 08:47
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QRコードやフレームQRの型式情報一覧を生成する
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use 5.018; | |
use utf8; | |
use warnings; | |
use strict; | |
my $size = 5; | |
sub bch5 { | |
my ($c) = @_; | |
my $pattern = ((1<<10) | (1<<8) | (1<<5) | (1<<4) | (1<<2) | (1<<1) | (1<<0))<<4; | |
my $ret = $c << 10; | |
my $mask = 1 << 14; | |
for (1..5) { | |
if ($ret & $mask) { | |
$ret ^= $pattern; | |
} | |
$mask >>= 1; | |
$pattern >>= 1; | |
} | |
return $ret & ((1<<10)-1); | |
} | |
sub finder_pattern { | |
my ($x, $y) = @_; | |
say qq(<rect x="$x" y="$y" width="80" height="80" stroke="none" stroke-width="0" fill="white"/>); | |
say qq(<rect x="$x" y="$y" width="70" height="70" stroke="none" stroke-width="0" fill="black"/>); | |
say qq(<rect x="@{[$x+10]}" y="@{[$y+10]}" width="50" height="50" stroke="none" stroke-width="0" fill="white"/>); | |
say qq(<rect x="@{[$x+20]}" y="@{[$y+20]}" width="30" height="30" stroke="none" stroke-width="0" fill="black"/>); | |
} | |
sub module { | |
my ($x, $y, $c) = @_; | |
say qq(<rect x="$x" y="$y" width="10" height="10" stroke="gray" stroke-width="1" fill="@{[($c&1)?'black':'white']}"/>); | |
} | |
sub draw { | |
my ($x, $y, $data) = @_; | |
finder_pattern($x, $y); | |
module($x+80, $y+$_*10, $data>>$_) for 0..5; | |
module($x+80, $y+60, 1); | |
module($x+80, $y+70, $data>>6); | |
module($x+80, $y+80, $data>>7); | |
module($x+70, $y+80, $data>>8); | |
module($x+60, $y+80, 1); | |
module($x+140-$_*10, $y+80, $data>>$_) for 9..14; | |
} | |
say '<svg xmlns="http://www.w3.org/2000/svg" width="1000" height="5000">'; | |
for my $data(0..31) { | |
finder_pattern(10, 10+130*$data); | |
module(10+140-$_*10, 10+130*$data+80, $data>>($_-10)) for 10..14; | |
for my $i(0..2) { | |
my $pattern = (0x2825, 0x5412, 0x2A09)[$i]; | |
my $tmp = $data ^ ($pattern>>10); | |
my $ret = (($tmp<<10)|bch5($tmp)) ^ $pattern; | |
draw(150+150*$i, 10+130*$data, $ret); | |
} | |
} | |
say "</svg>"; |
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