X-Git-Url: http://git.shiar.nl/sheet.git/blobdiff_plain/2731d4a4ad07e1ed10b7b36d70f6abe64af6664d..032b7eb4897d7517e94c7fe2e1d414be8d925c9f:/termcol.plp

diff --git a/termcol.plp b/termcol.plp
index 96f9b75..9262bf3 100644
--- a/termcol.plp
+++ b/termcol.plp
@@ -16,12 +16,23 @@ Html({
 :>
 <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     = '#' . $col->rgb48;
@@ -105,13 +116,105 @@ my %col = (
 		qw/000000 9C1D1D 6C9446 AC9A47 335786 8F6496 486768 E0DCDC
 		   2F2F2F CD5757 8FC35B D1C45E 5C81A9 BC95B7 76CBCB EEEEEC /,
 	],
+	mac2 => [
+		'MacII',
+		qw/FFFFFF FBF305 FF6403 DD0907 F20884 4700A5 0000D3 02ABEA
+		   1FB714 006412 562C05 90713A C0C0C0 808080 404040 000000 /,
+	],
+	risc => [
+		'RISC',  # v2/3
+		qw/FFFFFF DDDDDD BBBBBB 999999 777777 555555 333333 000000
+		   004499 EEEE00 00CC00 DD0000 EEEEBB 558800 FFBB00 00BBFF /,
+	],
+	c64 => [
+		'C=64',  # commodore 64/128
+		map {
+			# 5-bit luma ± 2-bit colour angle
+			my ($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);
@@ -123,54 +226,79 @@ for my $term (qw/cga xterm tango app html xkcd/) {
 <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>