Class curve4

renderers/agg/include/agg_curves.h:579–686

-----------------------------------------------------------------curve4

    //-----------------------------------------------------------------curve4
    class curve4
    {
    public:
        curve4() : m_approximation_method(curve_div) {}
        curve4(double x1, double y1, 
               double x2, double y2, 
               double x3, double y3,
               double x4, double y4) : 
            m_approximation_method(curve_div)
        { 
            init(x1, y1, x2, y2, x3, y3, x4, y4);
        }

        curve4(const curve4_points& cp) :
            m_approximation_method(curve_div)
        { 
            init(cp[0], cp[1], cp[2], cp[3], cp[4], cp[5], cp[6], cp[7]);
        }

        void reset() 
        { 
            m_curve_inc.reset();
            m_curve_div.reset();
        }

        void init(double x1, double y1, 
                  double x2, double y2, 
                  double x3, double y3,
                  double x4, double y4)
        {
            if(m_approximation_method == curve_inc) 
            {
                m_curve_inc.init(x1, y1, x2, y2, x3, y3, x4, y4);
            }
            else
            {
                m_curve_div.init(x1, y1, x2, y2, x3, y3, x4, y4);
            }
        }

        void init(const curve4_points& cp)
        {
            init(cp[0], cp[1], cp[2], cp[3], cp[4], cp[5], cp[6], cp[7]);
        }

        void approximation_method(curve_approximation_method_e v) 
        { 
            m_approximation_method = v; 
        }

        curve_approximation_method_e approximation_method() const 
        { 
            return m_approximation_method; 
        }

        void approximation_scale(double s) 
        { 
            m_curve_inc.approximation_scale(s);