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color_floodfill.rb.html
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<!DOCTYPE public PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<title>RMagick example: color_floodfill.rb</title>
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<h1>color_floodfill.rb</h1>
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<pre class="language-ruby">
# frozen_string_literal: true
require 'rmagick'
# Demonstrate the Image#color_floodfill method
before = Magick::Image.new(200, 200) { |info| info.background_color = 'white' }
before.border!(1, 1, 'black')
circle = Magick::Draw.new
circle.fill('transparent')
circle.stroke_width(2)
circle.stroke('black')
circle.circle(100, 100, 180, 100)
circle.fill('plum1')
circle.stroke('transparent')
circle.circle(60, 100, 40, 100)
circle.circle(140, 100, 120, 100)
circle.circle(100, 60, 100, 40)
circle.circle(100, 140, 100, 120)
circle.draw(before)
before.write('color_floodfill_before.gif')
aquamarine = Magick::Pixel.from_color('aquamarine')
after = before.color_floodfill(100, 100, aquamarine)
after.write('color_floodfill_after.gif')
exit
</pre>
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