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prsanjay/ruby-signaturepad-to-image.rb

Forked from branch14/ruby-signaturepad-to-image.rb
Created July 18, 2016 10:01
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convert json signatures captured by thomasjbradley's signature-pad to an image
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ruby-signaturepad-to-image.rb
# see https://github.com/thomasjbradley/signature-pad for more details
instructions = JSON.load(data).map { |h| "line #{h['mx']},#{h['my']} #{h['lx']},#{h['ly']}" } * ' '
system "convert -size 198x55 xc:transparent -stroke blue -draw '#{instructions}' signature.png"
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