# File lib/rvg/embellishable.rb, line 29 def initialize(r, cx=0, cy=0) super() r, cx, cy = Magick::RVG.convert_to_float(r, cx, cy) if r < 0 raise ArgumentError, "radius must be >= 0 (#{r} given)" end @primitive = :circle @args = [cx, cy, cx+r, cy] self end