From e428e6a5dee93205f841cde76d7df674f780ee11 Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Wed, 12 Apr 2017 22:41:00 +0200
Subject: [PATCH] latin: extend colour svg to mix specified hues

Replace hardcoded #rgb by generic hsl() values.
---
 writing-latn.inc.pl | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/writing-latn.inc.pl b/writing-latn.inc.pl
index 0d6ecb4..fd9faa2 100644
--- a/writing-latn.inc.pl
+++ b/writing-latn.inc.pl
@@ -49,15 +49,18 @@ sub dispbar {
 	);
 }
 
-sub disprgb {
-	my ($index) = @_;
-	my $circle = '<circle cx="%s" cy="%s" r="8" fill="#%X%X%X"/>';
+sub disphues {
+	my ($index, $hues) = @_;
+	my @lum = ($index % 3, $index / 3 % 3, $index / 9);  # hue opacities (0..2)x3
+	my @lumf = ('hsl(%s,100%%,50%%)', 'hsl(%s,100%%,25%%)');
 	return sprintf(
 		'<svg width="16" height="16" viewBox="0 0 22 22">%s</svg>',
-		join '',
-			sprintf($circle, 10, 10, [0, 8, 15]->[$index % 3], 0, 0),
-			sprintf($circle, 11, 12, 0, [0, 8, 15]->[$index / 3 % 3], 0),
-			sprintf($circle, 12, 10, 0, 0, [0, 8, 15]->[$index / 9]),
+		join '', map {
+			my $colf = $lumf[ $lum[$_] ];
+			!$colf ? () : sprintf('<circle cx="%d" cy="%d" r="%d" fill="%s"/>',
+				10 + $_, $_ == 1 ? 12 : 10, 10, sprintf($colf, $hues->[$_])
+			);
+		} 0 .. 2
 	);
 }
 
@@ -466,7 +469,7 @@ rgbmap => {
 		'svg { isolation: isolate }',
 		'svg circle { mix-blend-mode: screen }',
 	],
-	list => [ map { disprgb($_) } 0 .. 3*3*3 ],
+	list => [ map { disphues($_, [0, 240, 120]) } 0 .. 3*3*3 ], # Red, Blue, Green
 },
 dni => {
 	title => "D'ni",
-- 
2.30.0