From f98cea83b0bf1deb7ce54abe13d16d7e4fdd91ab Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Sun, 23 Oct 2016 07:47:20 +0200
Subject: [PATCH] termcol: exclude monochromatic xcolors palettes

---
 tools/mktermcol-xcolor | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/tools/mktermcol-xcolor b/tools/mktermcol-xcolor
index 2d007bc..59c4a25 100755
--- 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), '],';
-- 
2.30.0