improved test (still fails)

tests/feature/intersections/plane-intersect.cc

@@ -160,7 +160,8 @@ TG_FUZZ_TEST(Plane, Intersect)
 
         auto rotation_mat = tg::rotation_around(any_normal(d), c.opening_angle);
         auto new_normal = normalize(rotation_mat * d);
-        p = tg::plane3(new_normal, center - new_normal * 100);
+        new_normal = any_normal(new_normal);
+        p = tg::plane3(new_normal, center + d * 100);
 
         // TODO should not intersect! is moved away from center and normal is oriented so that the plane runs parallel to the cone (?)
         CHECK(!intersects(c, p));