32     PxPoint b(0.0, -2.0);  in TEST()  local
35     auto result = intersect(a, b, c, d);  in TEST()
41     b = {0.0, -2.0};  in TEST()
44     result = intersect(a, b, c, d);  in TEST()
46     result = intersect(c, d, a, b);  in TEST()
50     b = {0.0, -2.0};  in TEST()
53     result = intersect(a, b, c, d);  in TEST()
55     result = intersect(c, d, a, b);  in TEST()
59     b = {0.0, -2.0};  in TEST()
62     result = intersect(a, b, c, d);  in TEST()
64     result = intersect(c, d, a, b);  in TEST()
69     b = {0.0, -2.0};  in TEST()
72     result = intersect(a, b, c, d);  in TEST()
74     result = intersect(c, d, a, b);  in TEST()
78     b = {0.0, -2.0};  in TEST()
81     result = intersect(a, b, c, d);  in TEST()
83     result = intersect(c, d, a, b);  in TEST()
87     b = {0.0, -0.5};  in TEST()
90     result = intersect(a, b, c, d);  in TEST()
93     result = intersect(c, d, a, b);  in TEST()
98     b = {0.0, -0.5};  in TEST()
101     result = intersect(a, b, c, d);  in TEST()
104     result = intersect(c, d, a, b);  in TEST()
109     b = {0.0, 1.0};  in TEST()
112     result = intersect(a, b, c, d);  in TEST()
115     result = intersect(c, d, a, b);  in TEST()