# File lib/bio/graphics/svgee.rb, line 96
  def add_primitive(primitive_object)
    args = {}
    primitive_object.instance_variables.each{|v| args[v.to_s.gsub(/@/,"").to_sym] = primitive_object.instance_variable_get(v)  }
    primitive_string = args.delete(:primitive)
    make_tag(primitive_string, args)
  end