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#!/usr/bin/ruby
require "vips"
image = Vips::Image.black 1, 100000
image.set_progress true
def progress_to_s(name, progress)
puts "#{name}:"
puts " progress.run = #{progress[:run]}"
puts " progress.eta = #{progress[:eta]}"
puts " progress.tpels = #{progress[:tpels]}"
puts " progress.npels = #{progress[:npels]}"
puts " progress.percent = #{progress[:percent]}"
end
image.signal_connect :preeval do |progress|
progress_to_s("preeval", progress)
end
image.signal_connect :eval do |progress|
progress_to_s("eval", progress)
image.set_kill(true) if progress[:percent] > 50
end
image.signal_connect :posteval do |progress|
progress_to_s("posteval", progress)
end
image.avg
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