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# 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.
#
# Complex dash patterns can be specified by using an array with alternating
# dash/gap lengths for the first parameter (note that the <code>:space</code>
# option is ignored in this case).
require_relative '../example_helper'
filename = File.basename(__FILE__).gsub('.rb', '.pdf')
Prawn::ManualBuilder::Example.generate(filename) do
stroke_axis
dash([1, 2, 3, 2, 1, 5], phase: 6)
stroke_horizontal_line 50, 500, at: 230
dash([1, 2, 3, 4, 5, 6, 7, 8])
stroke_horizontal_line 50, 500, at: 220
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 then base_y -= 5
when 1 then phase = length # start with space between dashes
when 2 then 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
end
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