def test_normal_vector_on_cylinder(self):
cyl = Cylinder()
PointNormal = namedtuple("PointNormal", ["point", "normal"])
point_normals = [
PointNormal(Point(1, 0, 0), Vector(1, 0, 0)),
PointNormal(Point(0, 5, -1), Vector(0, 0, -1)),
PointNormal(Point(0, -2, 1), Vector(0, 0, 1)),
PointNormal(Point(-1, 1, 0), Vector(-1, 0, 0))
]
for point_normal in point_normals:
n = cyl.local_normal_at(point_normal.point)
self.assertEqual(n, point_normal.normal)
def test_normal_vector_cylinder_end_caps(self):
cyl = Cylinder()
cyl.minimum = 1
cyl.maximum = 2
cyl.closed = True
PointNormal = namedtuple("PointNormal", ["point", "normal"])
point_normals = [
PointNormal(Point(0, 1, 0), Vector(0, -1, 0)),
PointNormal(Point(0.5, 1, 0), Vector(0, -1, 0)),
PointNormal(Point(0, 1, 0.5), Vector(0, -1, 0)),
PointNormal(Point(0, 2, 0), Vector(0, 1, 0)),
PointNormal(Point(0.5, 2, 0), Vector(0, 1, 0)),
PointNormal(Point(0, 2, 0.5), Vector(0, 1, 0))
]
for point_normal in point_normals:
n = cyl.local_normal_at(point_normal.point)
self.assertEqual(n, point_normal.normal)
def test_normal_vector_on_a_cylinder(self):
cyl = Cylinder()
n = cyl.local_normal_at(Point(-1, 1, 0))
self.assertTrue(Vector(-1, 0, 0) == n)
