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# encoding: utf-8
#
# This sets the dashed pattern for lines and curves.
#
# The (dash) length defines how long each dash will be.
#
# The <code>:space</code> option defines the length of the space between the
# dashes.
#
# The <code>:phase</code> option defines the start point of the sequence of
# dashes and spaces.
#
require File.expand_path(File.join(File.dirname(__FILE__),
%w[.. example_helper]))
filename = File.basename(__FILE__).gsub('.rb', '.pdf')
Prawn::Example.generate(filename) do
stroke_axis
base_y = 210
24.times do |i|
length = (i / 4) + 1
space = length # space between dashes same length as dash
phase = 0 # start with dash
case i % 4
when 0
base_y -= 5
when 1
phase = length # start with space between dashes
when 2
space = length * 0.5 # space between dashes half as long as dash
when 3
space = length * 0.5 # space between dashes half as long as dash
phase = length # start with space between dashes
end
base_y -= 5
dash(length, :space => space, :phase => phase)
stroke_horizontal_line 50, 500, :at => base_y - (2 * i)
end
undash # revert stroke back to normal
end
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