require 'rvg/rvg'

Magick::RVG.dpi = 90

rvg = Magick::RVG.new(12.cm, 4.cm) do |canvas|
  canvas.viewbox(0, 0, 1200, 400)
  canvas.background_fill = 'white'
  canvas.desc = 'Example rect02 - rounded rectangles'

  # Show outline of canvas using 'rect' method
  canvas.rect(1195, 395, 1, 1).styles(:fill=>'none', :stroke=>'blue', :stroke_width=>2)

  canvas.rect(400, 200, 100, 100).round(50).styles(:fill=>'green')

  canvas.g.translate(700, 210).rotate(-30) do |grp|
    grp.rect(400, 200, 0, 0).round(50).styles(:fill=>'none', :stroke=>'purple', :stroke_width=>30)
  end
end

rvg.draw.write('rect02.gif')