public void Setup()
            {
                m_One = new Circle(new Point(10.0,
                                             14.0),
                                   2.5);
                m_Two = new Circle(new Point(11.0,
                                             2.5),
                                   2.5);
                m_Pair = new CirclePair(m_One,
                                        m_Two);

                m_Calculator = new OuterTangentsCalculator(m_Pair);
            }
            public void Setup()
            {
                m_One = new Circle(new Point(2.0,
                                             2.0),
                                   2.0);
                m_Two = new Circle(new Point(7.0,
                                             6.0),
                                   2.0);
                m_Pair = new CirclePair(m_One,
                                        m_Two);

                m_Calculator = new OuterTangentsCalculator(m_Pair);
            }