# File ../lib/fox/glshapes.rb, line 583
    def initialize(*args)
      if args.length == 4
        super(args[0], args[1], args[2], SHADING_SMOOTH|STYLE_SURFACE)
      else
        super(args[0], args[1], args[2], SHADING_SMOOTH|STYLE_SURFACE,
              args[4], args[4])
      end
      @radius = args[3] ? args[3] : 1.0
      @slices = SLICES_NUMBER
      @stacks = STACKS_NUMBER
      setRange(FXRange.new(-@radius, @radius, -@radius, @radius, -@radius, @radius))
    end