def test_bounded_cone_bounding_box(self):
shape = Cone()
shape.minimum = -5
shape.maximum = 3
box = shape.bounds_of()
self.assertEqual(box.min, Point(-5, -5, -5))
self.assertEqual(box.max, Point(5, 3, 5))
def test_intersect_cone_end_cap(self):
shape = Cone()
shape.minimum = -0.5
shape.maximum = 0.5
shape.closed = True
RayIntersection = namedtuple("RayIntersection",
["origin", "direction", "count"])
ray_intersections = [
RayIntersection(Point(0, 0, -5), Vector(0, 1, 0), 0),
RayIntersection(Point(0, 0, -0.25), Vector(0, 1, 1), 2),
RayIntersection(Point(0, 0, -0.25), Vector(0, 1, 0), 4)
]
for ray_intersection in ray_intersections:
direction = Vector.normalize(ray_intersection.direction)
r = Ray(ray_intersection.origin, direction)
xs = shape.local_intersect(r)
self.assertEqual(len(xs), ray_intersection.count)