<:
-sub luminance {
- # perceived brightness (using ITU-R recommendation 601 luma co-efficients)
- my ($r, $g, $b) = @_;
- return $r*.299 + $g*.587 + $b*.114;
-}
+use Shiar_Sheet::Colour '1.03';
+use List::Util qw( min max );
+
+my $palettes = do 'termcol.inc.pl';
+die "Cannot open palette data: $_\n" for $@ || $! || ();
sub colcell {
- my $id = shift;
- my @rgb = @_ >= 3 ? @_ : (map {hex} $_[0] =~ /(..)/g);
- my $rgb24 = '';
- $rgb24 .= sprintf '%X', min($_ / 17 + .5, 15) for @rgb[0..2];
- my $rgb48 = '';
- $rgb48 .= sprintf '%02X', $_ for @rgb[0..2];
- my $inverse = sprintf('%X', luminance(@rgb)/255 < .3 ? 12 : 0) x 3;
- return sprintf '
%s | %s | %s'."\n",
- "background:#$rgb48; color:#$inverse",
- $id,
- "background:#000; color:#$rgb48",
- $rgb24,
- "background:#FFF; color:#$rgb48",
- $rgb24,
+ my $name = shift // return " | \n";
+ my $col = Shiar_Sheet::Colour->new(@_);
+ my $minhex = $col->rgb24;
+ my $css = '#' . $col->rgb48;
+ my $inverse = '#' . sprintf('%X', $col->luminance/255 < .3 ? 12 : 0) x 3;
+
+ my $sample = [ qw(#000 #FFF) ];
+ ($name, $sample) = @$name if ref $name eq 'ARRAY';
+
+ my $out = sprintf(' | %s',
+ join(',', map { int } @$col),
+ "background:$css; color:$inverse; padding:0 1ex",
+ $name,
+ );
+ $out .= sprintf ' | %s', "background:$_; color:$css", $minhex
+ for @$sample;
+ return "$out\n";
}
-my %col = (
- -html => [
- qw/black maroon green olive navy purple cyan silver
- gray red lime yellow blue fuchsia aqua white/,
- qw/reset bold dim italic underline blink fastblink
- reverse hidden/,
- ],
- html => [
- qw/000000 CCCCCC/,
- qw/000000 800000 008000 808000 000080 800080 008080 C0C0C0
- 808080 FF0000 00FF00 FFFF00 0000FF FF00FF 00FFFF FFFFFF/,
- ],
- cga => [
- qw/000000 CCCCCC/,
- qw/000000 AA0000 00AA00 AA5500 0000AA AA00AA 00AAAA AAAAAA
- 555555 FF5555 55FF55 FFFF55 5555FF FF55FF 55FFFF FFFFFF/,
- ],
- xterm => [
- qw/000000 CCCCCC/,
- qw/000000 CC0000 00CC00 CCCC00 4682B4 CC00CC 00CCCC E5E5E5
- 4C4C4C FF0000 00FF00 FFFF00 1E90FF FF00FF 00FFFF FFFFFF/,
- ],
- tango => [
- qw/000000 CCCCCC/,
- qw/2E3436 CC0000 4E9A06 C4A000 3465A4 75507B 06989A D3D7CF
- 555753 EF2929 8AE234 FCE94F 729FCF AD7FA8 34E2E2 EEEEEC/,
- ],
-);
+if ($get{v}) {
+ my %reorder = (
+ arnegame => [ 0,5,9,12 , 3,6,10,13,1 , 4,7,8,11,14,15,2 ],
+ arnegame => [ 0,3,10,6,12,9,13,1 , 5,7,11,8,14,4,15,2 ],
+ c64 => [ 0,2,5,9,6,4,3,15 , 11,10,13,7,14,8,12,1 ],
+ msx2 => [ 0,6,2,10,4,13,7,14 , 1,8,3,11,5,9,12,15 ],
+ risc => [ 7,11,13,14,8,12,15,1, 6,5,10,9,4,3,2,0],
+ mac2 => [ 15,3,9,11,6,5,7,12 , 14,2,8,1,13,4,10,0 ],
+ );
+ $reorder{$_} = $reorder{msx2} for qw( msx1 arnejmp );
+ while (my ($name, $order) = each %reorder) {
+ for my $pal ( $palettes->{$name}) {
+ $pal = [ map { $pal->[$_ + 1] =~ s/:|$/:$_/r } -1, @{$order} ];
+ }
+ }
+}
+
+my @termlist = qw( cga xterm tango app html xkcd );
+push @termlist, qw( c64 msx2 mac2 risc arnegame ) if exists $get{v};
+for my $term (@termlist) {
+ my ($name, @index) = @{ $palettes->{$term} };
+ my $caption = $name // $term;
-for my $term (qw/html cga xterm tango/) {
print '', "\n";
- print "$term\n";
- for my $num (0 .. 15) {
- my $rgb = $col{$term}[$num + 2];
- print '',
- colcell($col{"-$term"}[$num] || $num, $rgb, $col{$term}[0]);
+ printf "%s\n", $caption;
+ for my $num (0 .. $#index) {
+ my ($rgb, $name) = split /:/, $index[$num], 3;
+ $name ||= $num;
+ $name = [ $name, ['#333'] ] if $term eq 'xkcd';
+ print ' ', colcell($name, $rgb);
}
print " \n\n";
}
+
+if (exists $get{v}) {
+ print "\n";
+ print "Amstrad CPC\n";
+ print coltable_hsv(3, sub {
+ $_[2] + 3 * ($_[0] + 3 * $_[1]),
+ map { $_ && $_ * 127 + 1 } @_
+ });
+ print " \n\n";
+}
:>
- 88-colour space
<:
-for my $r (0 .. 3) {
- print ' ';
- for my $g (0 .. 3) {
- print '';
- for my $b (0 .. 3) {
- my $index = $r*4*4 + $g*4 + $b + 16;
- print colcell($index, map {(0, 139, 205, 255)[$_]} $r, $g, $b);
+sub coltable_hsv {
+ my ($dim, $rgbval, $greyramp) = @_;
+
+ my $hmax = 2 * $dim * 3; # each face of the rgb cube
+ my $vmax = $dim - 1;
+ my $smax = $dim - 1;
+ $rgbval ||= sub { join('', @_), map { int $_ * 255 / $vmax } @_ };
+ $greyramp ||= [];
+
+ my %greymap; # name => value
+ my @colmap; # saturation => value => hue => [name, r,g,b]
+ my $offset = 16 * ($dim > 3);
+
+ for my $r (0 .. $dim - 1) {
+ for my $g (0 .. $dim - 1) {
+ for my $b (0 .. $dim - 1) {
+ my @rgb = ($r, $g, $b);
+
+ my $h = Shiar_Sheet::Colour->new(@rgb)->hue * $hmax;
+ my $v = max(@rgb);
+ my $s = abs(min(@rgb) - max(@rgb));
+
+ if (!$s) {
+ my ($index, $l) = $rgbval->(@rgb);
+ $greymap{$index} = $l;
+ next;
+ }
+
+ $v = $vmax - $v;
+ $s = $smax - $s - $v;
+
+ $colmap[$s][$v][$h] = [ $rgbval->(@rgb) ];
+ }
}
}
- print " \n";
-}
-print "\n";
-print ' ';
-print colcell(80, ($_) x 3) for 46, 92, 115, 139, 162, 185, 208, 231;
-print "
\n\n";
-:> | ';
+ $out .= colcell(@$_) for map { $_->[$h] } map { @{$_} } @colmap;
+ }
-
+ $offset += $dim ** 3;
+ $greymap{$offset++} = $_ for @{$greyramp};
-
-
256-colour space
-<:
-for my $r (0 .. 5) {
- print '
';
- for my $g (0 .. 5) {
- print '';
- for my $b (0 .. 5) {
- my $index = $r*6*6 + $g*6 + $b + 16;
- print colcell($index, map { $_ && $_*40 + 55 } $r, $g, $b);
- }
+ $out .= '
';
+ my $col = 0;
+ my $colbreak = scalar map { @$_ } @colmap; # same width as hue rows
+ for my $num (sort { $greymap{$a} <=> $greymap{$b} } keys %greymap) {
+ $out .= '' unless $col++ % $colbreak;
+ $out .= colcell($num, ($greymap{$num}) x 3);
}
+
+ return $out;
+}
+
+{
+ print "88-colour space
\n";
+ print "\n";
+ print coltable_hsv(4,
+ sub {
+ $_[2] + 4 * ($_[1] + 4 * $_[0]) + 16,
+ map { (0, 139, 205, 255)[$_] } @_
+ },
+ [map { ($_ + 2 + ($_>0)) * 255/11 } 0 .. 7],
+ );
print "
\n";
}
-print "\n";
-for my $row (0, 12) {
- print '';
- print colcell(232+$_, ($_*10 + 8) x 3) for $row .. $row+11;
+if ($ENV{PATH_INFO} =~ /256/) {
+ print "256-colour space
\n";
+ print "\n";
+ print coltable_hsv(6,
+ sub {
+ $_[2] + 6 * ($_[1] + 6 * $_[0]) + 16,
+ map { $_ && $_*40 + 55 } @_
+ },
+ [ map { $_ * 10 + 8 } 0 .. 23 ],
+ );
print "
\n";
}
-print "\n";
:>
-
-
-
-