termcol: rgb table columns from dark to light
authorMischa POSLAWSKY <perl@shiar.org>
Sat, 7 Nov 2015 22:13:55 +0000 (23:13 +0100)
committerMischa POSLAWSKY <perl@shiar.org>
Tue, 5 Jan 2016 00:05:07 +0000 (01:05 +0100)
termcol.plp

index 8d707ec..6cc6fea 100644 (file)
@@ -179,8 +179,9 @@ sub coltable_hsv {
                                        }
 
                                        $h = 1;  # greyscale hue
-                                       $s = 1;  # lowest saturation for other hues
-                                       $v = $s = $vmax if !$v;  # black at full saturation
+                                       $s = $smax - $v + 1;  # spread brightness over saturation groups
+                                       $v &&= $smax  # highest saturation
+                                               or $v = $s = 1;  # black at initial column
                                }
 
                                $h *= $hmax;
@@ -197,7 +198,7 @@ sub coltable_hsv {
        my $huerow = $colmap[0][0]; # first {$_} map { @{$_} } @colmap;
        for my $h (grep { $huerow->[$_] } 0 .. $#{$huerow}) {
                $out .= '<tr>';
-               $out .= colcell(@$_) for map { $_->[$h] } map { @{$_} } @colmap;
+               $out .= colcell(@$_) for map { $_->[$h] } map { reverse @{$_} } @colmap;
        }
 
        if (@greymap) {