51         dist_vec = Point<pxs>(dist_vec.x().abs(), dist_vec.y().abs());  in pixelLineIntersect()
53         if (dist_vec.x() < dist_vec.y()) {  in pixelLineIntersect()
54             dist_vec = Point<pxs>(dist_vec.y(), dist_vec.x());  in pixelLineIntersect()
57         auto a1 = -dist_vec.y();  in pixelLineIntersect()
74                 area = R.x() * R.y() * pxs(.5);  in pixelLineIntersect()
75                 if (R.y() > 1.0) {  in pixelLineIntersect()
76                     auto r = R.y() - pxs(1.0);  in pixelLineIntersect()
77                     area -= r * R.x() * ((r) / R.y()) * pxs(.5);  in pixelLineIntersect()
110         line = Point<pxs>(-line.y(), line.x()) / len;  in drawLinePoint()
129     pxs y = 0.0;  in intersect()  local
132         if (c.x().abs() < kEpsilon || a.y() < kEpsilon) {  in intersect()
135             y = g.x() / c.x();  in intersect()
138         pxs f = a.y() / a.x();  in intersect()
139         pxs h = f * c.x() - c.y();  in intersect()
143             y = (f * g.x() - g.y()) / h;  in intersect()
146     return c * y + d;  in intersect()
152     return {-in.y(), in.x()};  in rotate90()
260         auto y = *b - o;  in area()  local
261         result += x.x() * y.y() - x.y() * y.x();  in area()