termcol: original c64 colour values

[sheet.git] / termcol.plp

diff --git a/termcol.plp b/termcol.plp
index 0c51ab8d8aff8eb1c7e0e403b17a2dca3deaf62f..4de11c6668c9383211ee4104d58dd43bc726c7ea 100644 (file)
--- a/termcol.plp
+++ b/termcol.plp
@@ -18,7 +18,7 @@ Html({
 
 <div class="section">
 <:
-use Shiar_Sheet::Colour;
+use Shiar_Sheet::Colour '1.01';
 
 sub colcell {
        my $name = shift;
@@ -115,6 +115,36 @@ my %col = (
                qw/FFFFFF DDDDDD BBBBBB 999999 777777 555555 333333 000000
                   004499 EEEE00 00CC00 DD0000 EEEEBB 558800 FFBB00 00BBFF /,
        ],
+       c64 => [
+               'C=64',  # commodore 64/128
+               map {
+                       # 5-bit luma ± 2-bit colour angle
+                       my ($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 /,
+       ],
+       msx => [
+               'MSX',
+               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 /,
+       ],
 );
 
 for my $term (qw/cga xterm tango app html xkcd/) {