termcol: exclude monochromatic xcolors palettes

diff --git a/tools/mktermcol-xcolor b/tools/mktermcol-xcolor
index 2d007bcf924ddf4db39ed6318e1f7ebbe45a8a99..59c4a259bba9eb630fc3bad646121725f286f09f 100755 (executable)
--- a/tools/mktermcol-xcolor
+++ b/tools/mktermcol-xcolor
@@ -1,6 +1,8 @@
 #!/usr/bin/env perl
 use 5.010;
 
+use Shiar_Sheet::Colour '1.05';
+
 say 'use strict;';
 say '+{';
 my @names;
@@ -8,7 +10,6 @@ my @names;
 for my $path (glob 'data/xcolors/themes/*') {
        open my $theme, '<', $path;
        (my $name = $path) =~ s{.*/}{};  # basename
-       push @names, $name;
 
        my @pal;
        while (readline $theme) {
@@ -19,11 +20,26 @@ for my $path (glob 'data/xcolors/themes/*') {
                $pal[$idx] = $val;
        }
 
+       my $huesum = 0;
+       for my $hue (
+               sort map { $_->hue }
+               grep { ($_->hsv)[1] > 32 }  # ignore unsaturated
+               map { Shiar_Sheet::Colour->new($_) }
+               @pal
+       ) {
+               state $lasthue;
+               $huesum += abs($lasthue - $hue) > .02 if defined $lasthue;
+               $lasthue = $hue;
+       }
+       $huesum > 3 or next;  # require number of significant hue changes
+       #TODO tweak to include good-pants, exclude cheesecake-*
+
        say qq("$name" => {);
        say qq(\ttitle => '$name',);
        say qq(\tparent => 'cga',);
        say qq(\tlist => [qw(@pal)],);
        say qq(},);
+       push @names, $name;
 }
 
 say 'xcolor => [', join(', ', map {"'$_'"} @names), '],';