Lines Matching defs:_dist1
734 * _dist1: +/-distance btw V and nearest focus
737 * prerequisite: _dist1 <= _dist2
739 void xAx::set (const Point& _vertex, double _angle, double _dist1, double _dist2)
745 if (_dist1 == infinity()) // degenerate to a line
756 double cD = -4 * _dist1;
782 if (std::fabs(_dist1) > std::fabs(_dist2))
784 swap (_dist1, _dist2);
786 if (_dist1 < 0)
789 _dist1 = -_dist1;
794 double lin_ecc = (_dist2 - _dist1) / 2;
795 double rx = (_dist2 + _dist1) / 2;