:>
<h1>Terminal colours</h1>
+<p>
+<span title="ECMA-48">ANSI</span> (VT100, ISO-6429) 16-colour text palette
+as implemented by various systems and programs.
+<:
+print
+ !exists $get{v} ? 'Also see <a href="?v">8-bit legacy hardware</a> palettes.' :
+ 'Also included are 8-bit legacy hardware palettes.';
+:>
+</p>
+
<div class="section">
<:
-use Shiar_Sheet::Colour;
+use Shiar_Sheet::Colour '1.03';
+use List::Util qw( min max );
sub colcell {
- my $name = shift;
+ my $name = shift // return "<td colspan=3>\n";
my $col = Shiar_Sheet::Colour->new(@_);
my $minhex = $col->rgb24;
my $css = '#' . $col->rgb48;
qw/000000 9C1D1D 6C9446 AC9A47 335786 8F6496 486768 E0DCDC
2F2F2F CD5757 8FC35B D1C45E 5C81A9 BC95B7 76CBCB EEEEEC /,
],
+ mac2 => [
+ 'MacII',
+ qw/FFFFFF FBF305 FF6403 DD0907 F20884 4700A5 0000D3 02ABEA
+ 1FB714 006412 562C05 90713A C0C0C0 808080 404040 000000 /,
+ ],
+ risc => [
+ 'RISC', # v2/3
+ qw/FFFFFF DDDDDD BBBBBB 999999 777777 555555 333333 000000
+ 004499 EEEE00 00CC00 DD0000 EEEEBB 558800 FFBB00 00BBFF /,
+ ],
+ c64 => [
+ 'C=64', # commodore 64/128
+ map {
+ # 5-bit luma ± 2-bit colour angle
+ my ($y, $neg, $hue) = split /(-)|\+/;
+
+ # convert to yuv
+ my ($u, $v) = (0, 0);
+ if (defined $hue) {
+ my $RAD = 3.14159;
+ $hue *= $RAD / 8;
+ $hue += $RAD if $neg;
+ $u = cos $hue;
+ $v = sin $hue;
+ }
+
+ # convert to rgb
+ $y *= 255 / 32;
+ $_ = $_ * 127.5 + 128 for $u, $v;
+ Shiar_Sheet::Colour->newyuv($y, $u, $v)->rgb48;
+ }
+ qw/ 0 32 10+5 20-5 12+2 16-2 8+0 24-0
+ 12+6 8+7 16+5 10 15 24-2 15+0 20 /,
+ ],
+ msx1 => [
+ 'MSX',
+ map {
+ my ($y, @c) = split /;/;
+ $y *= 255;
+ $_ = ($_ - .47) / .53 * 127.5 + 128 for @c;
+ Shiar_Sheet::Colour->newyuv($y, @c)->rgb48;
+ }
+ qw/ 0.00;0.47;0.47 0.00;0.47;0.47 0.53;0.20;0.07 0.67;0.27;0.17
+ 0.40;1.00;0.40 0.53;0.93;0.43 0.47;0.30;0.83 0.73;0.70;0.00
+ 0.53;0.27;0.93 0.67;0.27;0.93 0.73;0.07;0.57 0.80;0.17;0.57
+ 0.47;0.23;0.13 0.53;0.67;0.73 0.80;0.47;0.47 1.00;0.47;0.47 /,
+ ],
+ msx2 => [
+ 'MSX2',
+ map { s{([0-7])}{sprintf '%02X', $1 / 7 * 255}egr }
+ qw/ 000 000 161 373 117 237 511 267
+ 711 733 661 663 141 625 555 777 /,
+ ],
+ arnejmp => [
+ sprintf('<a href="%s" title="%s">%s</a>',
+ 'http://androidarts.com/palette/16pal.htm',
+ "Arne's Japanese Machine Palette v3 (MSX)",
+ 'A:JMP',
+ ),
+ qw/ 000000 191028 46AF45 A1D685 453E78 7664FE 833129 9EC2E8
+ DC534B E18D79 D6B97B E9D8A1 216C4B D365C8 AFAAB9 F5F4EB /,
+ ],
+ arnegame => [
+ sprintf('<a href="%s" title="%s">%s</a>',
+ 'http://androidarts.com/palette/16pal.htm',
+ 'Generic 16 color game palette v20 by Arne Niklas Jansson',
+ 'Arne',
+ ),
+ qw/ 000000::void 9D9D9D::ash FFFFFF::blind BE2633::bloodred
+ E06F8B::pigmeat 493C2B::oldpoop A46422::newpoop EB8931::blaze
+ F7E26B::zornskin 2F484E::shade 44891A::leaf A3CE27::slime
+ 1B2632::night 005784::sea 31A2F2::sky B2DCEF::cloud /,
+ ],
);
-for my $term (qw/cga xterm tango app html xkcd/) {
+if ($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 ( $col{$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) {
print '<table>', "\n";
printf "<caption>%s</caption>\n", $col{$term}[0] || $term;
for my $num (1 .. $#{ $col{$term} }) {
- my ($rgb, $name) = split /:/, $col{$term}[$num], 2;
+ my ($rgb, $name) = split /:/, $col{$term}[$num], 3;
$name ||= $num - 1;
$name = [ $name, ['#333'] ] if $term eq 'xkcd';
print '<tr>', colcell($name, $rgb);
<hr>
<div class="section">
-<h2>88-colour space</h2>
<:
-for my $r (0 .. 3) {
- print '<table>';
- for my $g (0 .. 3) {
- print '<tr>';
- 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;
+
+ my %greymap; # name => value
+ my @colmap; # saturation => value => hue => [name, r,g,b]
+ my $offset = 16;
+
+ for my $r (0 .. $dim - 1) {
+ for my $g (0 .. $dim - 1) {
+ for my $b (0 .. $dim - 1) {
+ my $index = $r*$dim*$dim + $g*$dim + $b + $offset;
+ my @rgb = ($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) {
+ $greymap{$index} = $rgbval->($r);
+ next;
+ }
+
+ $v = $vmax - $v;
+ $s = $smax - $s - $v;
+
+ $colmap[$s][$v][$h] = [$index, map { $rgbval->($_) } @rgb];
+ }
}
}
- print "</table>\n";
-}
-print "\n";
-print '<table><tr>';
-print colcell(80+$_, (($_ + 2 + ($_>0)) * 255/11) x 3) for 0 .. 7;
-print "</table>\n\n";
+ my $out = '<table class=mapped>';
+ $out .= sprintf '<colgroup span=%d>', 3 * @{$_} for @colmap;
+ my $huerow = $colmap[0][0]; # first {$_} map { @{$_} } @colmap;
+ for my $h (grep { $huerow->[$_] } 0 .. $#{$huerow}) {
+ $out .= '<tr>';
+ $out .= colcell(@$_) for map { $_->[$h] } map { @{$_} } @colmap;
+ }
-:></div>
-<: if ($ENV{PATH_INFO} =~ /256/) { :>
-<hr>
+ $offset += $dim ** 3;
+ $greymap{$offset++} = $_ for @{$greyramp};
-<div class="section">
-<h2>256-colour space</h2>
-<:
-for my $r (0 .. 5) {
- print '<table>';
- for my $g (0 .. 5) {
- print '<tr>';
- for my $b (0 .. 5) {
- my $index = $r*6*6 + $g*6 + $b + 16;
- print colcell($index, map { $_ && $_*40 + 55 } $r, $g, $b);
- }
+ $out .= '<tbody>';
+ my $col = 0;
+ my $colbreak = scalar map { @$_ } @colmap; # same width as hue rows
+ for my $num (sort { $greymap{$a} <=> $greymap{$b} } keys %greymap) {
+ $out .= '<tr>' unless $col++ % $colbreak;
+ $out .= colcell($num, ($greymap{$num}) x 3);
}
- print "</table>\n";
+ $out .= "</table>\n\n";
+
+ return $out;
}
-print "\n";
- print '<table>';
-for my $row (0, 12) {
- print '<tr>';
- print colcell(232+$_, ($_*10 + 8) x 3) for $row .. $row+11;
+{
+ print "<h2>88-colour space</h2>\n";
+ print coltable_hsv(4,
+ sub {(0, 139, 205, 255)[$_[0]]},
+ [map { ($_ + 2 + ($_>0)) * 255/11 } 0 .. 7],
+ );
}
- print "</table>\n";
-print "\n";
+if ($ENV{PATH_INFO} =~ /256/) {
+ print "<h2>256-colour space</h2>\n";
+ print coltable_hsv(6,
+ sub { $_[0] && $_[0]*40 + 55 },
+ [ map { $_ * 10 + 8 } 0 .. 23 ],
+ );
+}
:></div>
-<: } :>
<hr>
git.shiar.nl / sheet.git / blobdiff