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# File 'lib/jcaptcha.rb', line 23
def create(code)
chars = code.split('')
all_left = 20
font_size = 45
full_height = font_size
full_width = font_size * chars.size
size = "#{full_width}x#{full_height}"
half_width = full_width / 2
text_top = 0
text_left = 0 - (font_size * 0.28).to_i
stroke_width = (font_size * 0.05).to_i + 1
text_width = font_size + text_left
text_opts = []
line_opts = []
chars.each_with_index do |char, i|
rgb = random_color
text_color = "rgba(#{rgb.join(',')}, 1)"
line_color = "rgba(#{rgb.join(',')}, 0.6)"
text_opts << %(-fill '#{text_color}' -draw 'text #{(text_left + text_width) * i + all_left},#{text_top} "#{char}"')
left_y = rand_line_top(text_top, font_size)
right_x = half_width + (half_width * 0.3).to_i
right_y = rand_line_top(text_top, font_size)
line_opts << %(-draw 'stroke #{line_color} line #{rand(10)},#{left_y} #{right_x},#{right_y}')
end
command = " convert -size \#{size} \\\n -strokewidth \#{stroke_width} \\\n \#{line_opts.join(' ')} \\\n -pointsize \#{font_size} -weight 500 \\\n \#{text_opts.join(' ')} \\\n -wave \#{rand(2) + 3}x\#{rand(2) + 1} \\\n -rotate \#{rand(10) - 5} \\\n -gravity NorthWest -sketch 1x10+\#{rand(2)} \\\n -fill none \\\n -implode 0.3 -trim label:- png:-\n CODE\n\n command.strip!\n out, err, _st = Open3.capture3(command)\n raise \"RuCaptcha: \#{err.strip}\" if err.present?\n out\nend\n"
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