composite_tiled.rb.html

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  <title>RMagick example: composite_tiled.rb</title>
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<h1>composite_tiled.rb</h1>
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<pre class="language-ruby">
# frozen_string_literal: true

require 'rmagick'

# Create a transparent image to tile over the background image.
wm = Magick::Image.read('xc:none') { |options| options.size = '100x50' }.first

# Draw "RMagick" in semi-transparent text on the transparent image.
gc = Magick::Draw.new
gc.fill '#ffffff7f'
gc.font_weight Magick::BoldWeight
gc.font_size 18
gc.rotate 15
gc.gravity Magick::CenterGravity
gc.text 0, 0, 'RMagick'
gc.draw wm

# Read the background image.
img = Magick::Image.read('images/Flower_Hat.jpg').first

# Composite the tile image over the background image.
img.composite_tiled! wm
img.write 'composite_tiled.jpg'
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