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# This transformation is used to scale the user space. Give it an scale factor
# and an <code>:origin</code> point and everything inside the block will be
# scaled using the origin point as reference.
#
# If you omit the <code>:origin</code> option the page origin will be used.
require_relative '../example_helper'
filename = File.basename(__FILE__).gsub('.rb', '.pdf')
Prawn::ManualBuilder::Example.generate(filename) do
stroke_axis
width = 100
height = 50
x = 50
y = 200
stroke_rectangle [x, y], width, height
text_box 'reference rectangle', at: [x + 10, y - 10], width: width - 20
scale(2, origin: [x, y]) do
stroke_rectangle [x, y], width, height
text_box 'rectangle scaled from upper-left corner',
at: [x, y - height - 5],
width: width
end
x = 350
stroke_rectangle [x, y], width, height
text_box 'reference rectangle', at: [x + 10, y - 10], width: width - 20
scale(2, origin: [x + width / 2, y - height / 2]) do
stroke_rectangle [x, y], width, height
text_box 'rectangle scaled from center',
at: [x, y - height - 5],
width: width
end
end
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