random palette of 215 colours

[barcat.git] / barcat

diff --git a/barcat b/barcat
index cc128a06fd8815f34f910c932cce36a94e789118..28e09b063738bf66e3e80bbb29337d8a8785c872 100755 (executable)
--- a/barcat
+++ b/barcat
@@ -58,18 +58,23 @@ GetOptions(\%opt,
        'palette=s' => sub {
                $opt{palette} = {
                        fire   => [qw( 90 31 91 33 93 97 96 )],
-                       fire88 => [map {"38;5;$_"} qw(
-                               80  32 48 64  68 72 76  77 78 79  47
-                       )],
                        fire256=> [map {"38;5;$_"} qw(
                                235  52 88 124 160 196
                                202 208 214 220 226  227 228 229 230 231  159
                        )],
-                       ramp88 => [map {"38;5;$_"} qw(
-                               64 65 66 67 51 35 39 23 22 26 25 28
-                       )],
                        whites => [qw( 1;30 0;37 1;37 )],
-                       greys  => [map {"38;5;$_"} 52, 235..255, 47],
+                       greys  => [map {"38;5;$_"} 0, 232..255, 15],
+                       random => [map {"38;5;$_"} List::Util::shuffle(17..231)],
+                       rainbow=> [map {"38;5;$_"}
+                               196, # r
+                               (map { 196 + $_*6   } 0..4), # +g
+                               (map { 226 - $_*6*6 } 0..4), # -r
+                               (map {  46 + $_     } 0..4), # +b
+                               (map {  51 - $_*6   } 0..4), # -g
+                               (map {  21 + $_*6*6 } 0..4), # +r
+                               (map { 201 - $_     } 0..4), # -b
+                               196,
+                       ],
                }->{$_[1]} // [ split /[^0-9;]/, $_[1] ];
        },
        'stat|s!',
@@ -663,6 +668,10 @@ Sparkline graphics of simple input given as inline parameters:
 
     barcat -_ 3 1 4 1 5 0 9 2 4
 
+Misusing the spark functionality to draw a lolcat line:
+
+    seq $(tput cols) | barcat --spark --indicator=- --palette=rainbow
+
 =head1 AUTHOR
 
 Mischa POSLAWSKY <perl@shiar.org>