geom/sphere: add glancing ray test

2018-04-16 15:59:16 +10:00 · 2018-04-16 15:59:16 +10:00 · 1889a76e26
commit 1889a76e26
parent 87d442772c
1 changed files with 6 additions and 0 deletions
--- a/test/geom/sphere.cpp
+++ b/test/geom/sphere.cpp
@ -35,6 +35,12 @@ test_intersect (util::TAP::logger &tap)
            { util::point3f {0}, 1 },
            { util::point3f {0,2,0}, util::vector3f {0,1,0} },
            "offset ray never intersects unit-origin sphere"
+        },
+        {
+            1.f,
+            { util::point3f {1,1,1}, 1 },
+            { util::point3f {2,2,1}, util::vector3f{-1,0,0} },
+            "glancing ray at unit distance"
        }
    };