+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], 3;
+ $name ||= $num - 1;
+ $name = [ $name, ['#333'] ] if $term eq 'xkcd';
+ print '<tr>', colcell($name, $rgb);
+ }
+ print "</table>\n\n";
+}
+:></div>
+
+<hr>
+
+<div class="section">
+<:
+sub coltable_hsv {
+ my ($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];
+ }
+ }
+ }
+
+ 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;
+ }
+
+ $offset += $dim ** 3;
+ $greymap{$offset++} = $_ for @{$greyramp};
+
+ $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);
+ }
+ $out .= "</table>\n\n";
+
+ return $out;
+}
+
+{
+ print "<h2>88-colour space</h2>\n";
+ print coltable_hsv(4,
+ sub {(0, 139, 205, 255)[$_[0]]},
+ [map { ($_ + 2 + ($_>0)) * 255/11 } 0 .. 7],
+ );
+}
+
+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 ],