tref01.rb.html

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  <title>RMagick example: tref01.rb</title>
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<h1>tref01.rb</h1>
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<pre class="language-ruby">
# frozen_string_literal: true

require 'rvg/rvg'

Magick::RVG.dpi = 90
FILL = %w[yellow pink green blue cyan red purple brown]

rvg = Magick::RVG.new(6.cm, 6.cm).viewbox(0, 0, 600, 600) do |canvas|
  canvas.background_fill = 'white'

  ref_text = Magick::RVG::Tspan.new('Referenced').styles(font_size: 52, font_weight: 'bold')

  canvas.g.translate(300, 270) do |grp|
    angle = 0
    8.times do |n|
      grp.text do |txt|
        txt.tref(ref_text).d(0, 30).rotate(angle).styles(fill: FILL[n])
        angle += 45
      end
    end
  end

  canvas.rect(596, 596).styles(fill: 'none', stroke: 'blue')
end

rvg.draw.write('tref01.gif')
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