X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=tst%2Fgeometry%2FIntersectionTest.cpp;h=550c0f257c65fc2bf33325d59b4aa7c939215031;hb=48d34439f3d5bc8bebabe9f0ee35970359e61bfa;hp=36cacdfa8bd309293c8224a0da636f9dd544e34d;hpb=bda41b98427c8d34f954dae0dcaf261c5ad6cb43;p=gong.git

diff --git a/tst/geometry/IntersectionTest.cpp b/tst/geometry/IntersectionTest.cpp
index 36cacdf..550c0f2 100644
--- a/tst/geometry/IntersectionTest.cpp
+++ b/tst/geometry/IntersectionTest.cpp
@@ -325,6 +325,59 @@ void IntersectionTest::testBoxBox() {
 	);
 }
 
+void IntersectionTest::testSphereSphere() {
+	const float delta = std::numeric_limits<float>::epsilon();
+
+	Sphere a{{ 0.0f, 0.0f, 0.0f }, 1.0f};
+	Sphere b{{ 0.0f, 0.0f, 0.0f }, 1.0f};
+	float depth;
+	glm::vec3 normal;
+
+	CPPUNIT_ASSERT_MESSAGE(
+		"coincidental spheres should intersect",
+		Intersection(a, b, depth, normal)
+	);
+	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+		"bad intersection distance",
+		2.0f, depth, delta
+	);
+	// normal can be just about anything
+
+	b.Move({ 1, 0, 0 });
+	CPPUNIT_ASSERT_MESSAGE(
+		"spheres should intersect",
+		Intersection(a, b, depth, normal)
+	);
+	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+		"bad intersection distance",
+		1.0f, depth, delta
+	);
+	CPPUNIT_ASSERT_EQUAL_MESSAGE(
+		"bad intersection normal",
+		glm::vec3(1, 0, 0), normal
+	);
+
+	b.Position({ -1.5, 0, 0 });
+	CPPUNIT_ASSERT_MESSAGE(
+		"spheres should intersect",
+		Intersection(a, b, depth, normal)
+	);
+	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+		"bad intersection distance",
+		0.5f, depth, delta
+	);
+	CPPUNIT_ASSERT_EQUAL_MESSAGE(
+		"bad intersection normal",
+		glm::vec3(-1, 0, 0), normal
+	);
+
+	b.Move({ -1, 0, 0 });
+	CPPUNIT_ASSERT_MESSAGE(
+		"spheres should not intersect",
+		!Intersection(a, b, depth, normal)
+	);
+}
+
 void IntersectionTest::testSpherePlane() {
 	const float delta = std::numeric_limits<float>::epsilon();