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Contents
# frozen_string_literal: false
# Core SVG data for the US Ensign.
#
# This class should never need to be called directly.
# @private
class USPSFlags
class Core
class US
def svg
@base_hoist = 2000.to_f
@base_fly = @base_hoist * 1.91
@canton_hoist = @base_hoist * 7 / 13
@canton_fly = @canton_hoist * Math.sqrt(2)
@star_offset = 20 # Half of scaled star height
defs + stripes + stars
end
private
def defs
File.read("#{File.dirname(__dir__)}/core/us_defs.svg.partial").gsub('STAR', USPSFlags::Core.star)
end
def stars
rows = { odd: (1..9).step(2).to_a, even: (2..8).step(2).to_a }
columns = { odd: (1..11).step(2).to_a, even: (2..10).step(2).to_a }
svg = +''
%i[odd even].each { |type| svg << star_set(rows, columns, type) }
svg
end
def star_set(rows, columns, type)
svg = +''
rows[type].each do |r|
columns[type].each do |c|
svg << <<~SVG
<g transform="translate(#{@canton_fly * c / 12}, #{@star_offset + @canton_hoist * r / 10})"><g><use href="#star" /></g></g>
SVG
end
end
svg
end
def stripes
s = (0..12).map do |i|
color = i.even? ? 'red' : 'white'
"<use href=\"##{color}-stripe\" y=\"#{@base_hoist * i / 13}\" />"
end
s.join("\n") + "\n<rect y=\"0\" width=\"#{@canton_fly}\" height=\"#{@canton_hoist}\" " \
"fill=\"#{USPSFlags::Config::OLD_GLORY_BLUE}\" />\n"
end
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems