def g_with_decompose
      if typecode == OBJECT or is_a?(Variable) or Thread.current[:lazy]
        g_without_decompose
      elsif typecode < RGB_
        decompose 1
      else
        self
      end
    end
def g_with_decompose
      if typecode == OBJECT or is_a?(Variable) or Thread.current[:lazy]
        g_without_decompose
      elsif typecode < RGB_
        decompose 1
      else
        self
      end
    end
def g_with_decompose if typecode == OBJECT or is_a? ( Variable ) or Thread . current [ :lazy ] g_without_decompose elsif typecode < RGB_ decompose 1 else self end end
Fast extraction for green channel of RGB array

 @return [Node] Array with green channel.
Fast extraction for green channel of RGB array