latin: extend colour svg to mix specified hues

Replace hardcoded #rgb by generic hsl() values.

diff --git a/writing-latn.inc.pl b/writing-latn.inc.pl
index 0d6ecb4d6305a0777b138481c7111ae7a25102c0..fd9faa2cffb6890a836339ab11911c607ac42851 100644 (file)
--- 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",