Sha256: 6b67f59dba6bdbe06b70b59e736544c694840564950bd53c44a7989459f5ecd5
Contents?: true
Size: 539 Bytes
Versions: 10
Compression:
Stored size: 539 Bytes
Contents
#!/usr/bin/env ruby
# frozen_string_literal: true
Dir.chdir(File.dirname(__FILE__))
require 'shellwords'
palettes = [64]
side = 256
palettes.each do |palette|
IO.popen(%W[
convert
-depth 8
-size #{side}x#{side}
-strip
rgb:-
PNG24:#{palette}.png
].shelljoin, 'w') do |f|
(side**2).times do |i|
color = i * palette / (side**2) * 0x10000 / palette
f << [color / 0x100, color % 0x100, 0].pack('C*')
end
end
system "identify -format 'Wrote %f with %k unique colors\n' #{palette}.png"
end
Version data entries
10 entries across 10 versions & 1 rubygems