35     auto result = intersect(a, b, c, d);  in TEST()
44     result = intersect(a, b, c, d);  in TEST()
46     result = intersect(c, d, a, b);  in TEST()
53     result = intersect(a, b, c, d);  in TEST()
55     result = intersect(c, d, a, b);  in TEST()
62     result = intersect(a, b, c, d);  in TEST()
64     result = intersect(c, d, a, b);  in TEST()
72     result = intersect(a, b, c, d);  in TEST()
74     result = intersect(c, d, a, b);  in TEST()
81     result = intersect(a, b, c, d);  in TEST()
83     result = intersect(c, d, a, b);  in TEST()
90     result = intersect(a, b, c, d);  in TEST()
93     result = intersect(c, d, a, b);  in TEST()
101     result = intersect(a, b, c, d);  in TEST()
104     result = intersect(c, d, a, b);  in TEST()
112     result = intersect(a, b, c, d);  in TEST()
115     result = intersect(c, d, a, b);  in TEST()
130     auto o2 = o.intersect<10>({.0, .0}, {1.0, 1.0});  in TEST()
136     o2 = o.intersect<10>({1.0, 1.0}, {.0, .0});  in TEST()
142     o2 = o.intersect<10>({.0, 2.0}, {2.0, .0});  in TEST()
146     o2 = o.intersect<10>({2.0, .0}, {.0, 2.0});  in TEST()
152     o2 = o.intersect<10>({-1.0, .0}, {1.0, 2.0});  in TEST()
156     o2 = o.intersect<10>({1.0, 2.0}, {-1.0, .0});  in TEST()
162     o2 = o.intersect<10>({2.0, 1.0}, {.0, -1.0});  in TEST()
166     o2 = o.intersect<10>({.0, -1.0}, {2.0, 1.0});  in TEST()
172     o2 = o.intersect<10>({1.0, -1.0}, {-1.0, 1.0});  in TEST()
176     o2 = o.intersect<10>({-1.0, 1.0}, {1.0, -1.0});  in TEST()
182     o2 = o.intersect<10>({-1.0, 1.0}, {2.0, 1.0});  in TEST()
186     o2 = o.intersect<10>({2.0, 1.0}, {-1.0, 1.0});  in TEST()
191     o2 = o.intersect<10>({.0, -.5}, {.5, .0});  in TEST()
196     o2 = o.intersect<10>({.0, .5}, {.5, .0});  in TEST()
202     o2 = o3.intersect<10>({-3.3845, 25.3339}, {7.59022, 14.3592});  in TEST()