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# encoding: utf-8
#
# The origin example already mentions that a new document already comes with
# a margin box whose bottom left corner is used as the origin for calculating
# coordinates.
#
# What has not been told is that there is one helper for "bypassing" the margin
# box: <code>canvas</code>. This method is a shortcut for creating a bounding
# box mapped to the absolute coordinates and evaluating the code inside it.
#
# The following snippet draws a circle on each of the four absolute corners.
#
require File.expand_path(File.join(File.dirname(__FILE__),
%w[.. example_helper]))
filename = File.basename(__FILE__).gsub('.rb', '.pdf')
Prawn::Example.generate(filename) do
canvas do
fill_circle [bounds.left, bounds.top], 30
fill_circle [bounds.right, bounds.top], 30
fill_circle [bounds.right, bounds.bottom], 30
fill_circle [0, 0], 30
end
end
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