obb intersection tests

typed-geometry @ 71aeccbb

-Subproject commit 2644a88c77be3d83a79e518ffe64d7a2ce567513
+Subproject commit 71aeccbb4212dc12be6b1ff4eb14827d0a53feba

tests/feature/intersections/plane-intersect.cc

@@ -320,5 +320,44 @@ TG_FUZZ_TEST(Plane, Intersect)
             plane = tg::plane3(-normalize(tg::vec3(offset)), offset);
             CHECK(!intersects(plane, box));
         }
+
+        // any plane inside the aabb (should intersect)
+        {
+            plane = tg::plane3(tg::uniform<tg::dir3>(rng), uniform(rng, box));
+            CHECK(intersects(plane, box));
+        }
+    }
+
+    // plane3 - box3
+    {
+        auto half_extents = tg::mat3();
+        half_extents[0] = tg::dir3::pos_x;
+        half_extents[1] = tg::dir3::pos_y;
+        half_extents[2] = tg::dir3::pos_z;
+
+        auto box = tg::box3(tg::pos3::zero, half_extents);
+
+        {
+            auto const plane = tg::plane3(tg::uniform<tg::dir3>(rng), tg::pos3::zero);
+            CHECK(intersects(plane, box));
+        }
+
+        {
+            auto plane = tg::plane3(tg::dir3::pos_x, tg::pos3(1, 0, 0));
+            CHECK(!intersects(plane, box));
+
+            plane = tg::plane3(tg::dir3::pos_x, tg::pos3(0.9f, 0, 0));
+            CHECK(intersects(plane, box));
+        }
+
+        // random box rotation
+        auto nx = tg::uniform<tg::dir3>(rng);
+        auto ny = any_normal(nx);
+        auto nz = normalize(cross(nx, ny));
+
+        // random box length
+        half_extents[0] = nx * uniform(rng, 1.0f, 10.0f);
+        half_extents[1] = ny * uniform(rng, 1.0f, 10.0f);
+        half_extents[2] = nz * uniform(rng, 1.0f, 10.0f);
     }
 }