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# File ../lib/fox/glshapes.rb, line 120
    def draw(viewer)
      GL::Color(1.0, 0.0, 0.0)
      GL::PointSize(HANDLE_SIZE)
      GL::Begin(GL::LINES)
      GL::Vertex(@fm.pos)
      GL::Vertex(@to.pos)
      GL::End()
    end