def test_deserialization(self):
print("\nSphere deserialization", end = "")
sphere = Sphere(Vector3d(0,0,0), 10)
dict = json.loads(repr(sphere))
obj = Sphere.fromDict(dict)
self.assertEqual(obj.center, Vector3d(0))
self.assertEqual(obj.radius, 10)
def test_properties(self):
print("\nProperties", end = "")
sphere = Sphere(Vector3d(0,0,0), 10)
sphere.center = Vector3d(1,2,3)
self.assertEqual(sphere.center, Vector3d(1,2,3))
sphere.radius = 123
self.assertEqual(sphere.radius, 123)
def test_tangent(self):
print("\nTanget ray", end = "")
sphere = Sphere(Vector3d(0,0,30), 10)
ray = Ray(Vector3d(10,0,0),Vector3d(0,0,1))
intersection = IntersectionRecord()
hitted = sphere.hitRay(intersection,ray)
self.assertEqual(hitted, True)
self.assertEqual(intersection.distance, 30)
self.assertEqual(intersection.intersection, Vector3d(10,0,30))
self.assertEqual(intersection.normal, Vector3d(1,0,0))
def test_no_intersection(self):
print("\nNo intersections", end = "")
sphere = Sphere(Vector3d(0,0,30), 10)
ray = Ray(Vector3d(0,0,0),Vector3d(0,0,-1))
intersection = IntersectionRecord()
hitted = sphere.hitRay(intersection,ray)
self.assertEqual(hitted, False)
ray = Ray(Vector3d(10.0001,0,0),Vector3d(0,0,1))
hitted = sphere.hitRay(intersection,ray)
self.assertEqual(hitted, False)
def test_serialization(self):
print("\nSphere serialization", end = "")
sphere = Sphere(Vector3d(0,0,0), 10)
dict = json.loads(repr(sphere))
obj = dict["Sphere"]
self.assertEqual(obj["Center"], json.loads(repr(Vector3d(0))))
self.assertEqual(obj["Radius"], 10)
def test_bounding_box(self):
print("\nBounding box", end = "")
sphere = Sphere(Vector3d(0,1,2), 5)
bb = sphere.boundingBox
self.assertEqual(bb.min, Vector3d(-5,-4,-3))
self.assertEqual(bb.max, Vector3d(5,6,7))
def test_two_intersections(self):
print("\nRay intersects Sphere (two intersections)", end = "")
sphere = Sphere(Vector3d(0,0,30), 10)
ray = Ray(Vector3d(0,0,0),Vector3d(0,0,1))
intersection = IntersectionRecord()
hitted = sphere.hitRay(intersection,ray)
self.assertEqual(hitted, True)
self.assertEqual(intersection.distance, 20)
self.assertEqual(intersection.intersection, Vector3d(0,0,20))
self.assertEqual(intersection.normal, Vector3d(0,0,-1))
intersection = IntersectionRecord()
sphere = Sphere(Vector3d(0,0,0), 1)
x = 1/math.sqrt(2)
ray = Ray(Vector3d(x,0,-5),Vector3d(0,0,1))
hitted = sphere.hitRay(intersection,ray)
self.assertEqual(hitted, True)
self.assertEqual(intersection.distance, 5-x)
self.assertEqual(round(intersection.intersection.x,12), round(x,12))
self.assertEqual(intersection.intersection.y, 0)
self.assertEqual(round(intersection.intersection.z,12), round(-x,12))
self.assertEqual(round(intersection.normal.x,12), round(x,12))
self.assertEqual(intersection.normal.y, 0)
self.assertEqual(round(intersection.normal.z,12), round(-x,12))
def test_full_constructor(self):
print("\nFull constructor", end = "")
sphere = Sphere(Vector3d(0,0,0), 10)
self.assertEqual(sphere.center, Vector3d(0,0,0))
self.assertEqual(sphere.radius, 10)
def test_with_default(self):
print("\nDefault constructor", end = "")
sphere = Sphere(Vector3d(0,0,0), 10)
self.assertEqual(sphere.center, Vector3d(0,0,0))
self.assertEqual(sphere.radius, 10)