def test_distance(self):
v1 = Vec(1, 0, 0)
v2 = Vec(0, 1, 0)
dist = v1.distance(v2)
correct = sqrt(2)
self.assertEqual(dist, correct)
def test_coordinate_system_2d(self):
v = Vec(1, 0)
mat = v.coordinate_system()
correct = Mat(
[1, 0],
[0, 1],
)
self.assertEqual(mat, correct)
def test_rotated_around(self):
vec = Vec(1, 0, 0)
axis = Vec(0, 0, 1)
res = vec.rotated_around(axis, pi/4)
self.assertEqual(res, Vec(1, 1, 0).normalized())
axis = Vec(1, 1, 1).normalized()
res = vec.rotated_around(axis, pi/4)
# for the sake of this comparison, let's lower the equality threshold
res.set_comparison_accuracy(0.00001)
self.assertEqual(res, Vec(0.804738, 0.505879, -0.310617))
def test_mat_from_vecs(self):
v1 = Vec(1, 2, 3)
v2 = Vec(4, 5, 6)
mat = Mat(v1, v2)
correct = Mat([
[1, 2, 3],
[4, 5, 6]
])
self.assertEqual(mat, correct)
v1.z = 39
v2.y = 25
correct = Mat([
[1, 2, 39],
[4, 25, 6]
])
self.assertEqual(mat, correct)
def test_to_list(self):
v = Vec(1, 2, 3)
self.assertEqual(v.to_list(), [1, 2, 3])
def test_normalize_in_place(self):
vec = Vec(2, 0, 0)
vec.normalize_in_place()
self.assertEqual(vec, Vec(1, 0, 0))
def test_normalized(self):
vec = Vec(2, 0, 0)
self.assertEqual(vec.normalized(), Vec(1, 0, 0))
self.assertTrue(isinstance(vec.normalized(), Vec))
def test_magnitude(self):
vec = Vec(1, 2, 3)
correct = 3.7416573867739413
self.assertTrue(abs(vec.magnitude() - correct) < 0.00001)
def test_write_access(self):
vec = Vec(1, 2, 3)
vec.y = 49
self.assertEqual(vec[1], 49)
self.assertEqual(vec.y, 49)
def test_rotated_2d(self):
vec = Vec(1, 0)
res = vec.rotated(pi/2)
self.assertEqual(res, Vec(0, 1))
self.assertTrue(isinstance(res, Vec))
def test_scaled_2d(self):
vec = Vec(4, 1)
res = vec.scaled(0.5, 2.0)
self.assertEqual(res, Vec(2, 2))
self.assertTrue(isinstance(res, Vec))
def test_translated_3d(self):
vec = Vec(1, 0, 0)
res = vec.translated(1, 2, 3)
self.assertEqual(res, Vec(2, 2, 3))
self.assertTrue(isinstance(res, Vec))
def test_appended(self):
v = Vec(1, 2, 3)
v = v.appended(4)
self.assertEqual(v, Vec(1, 2, 3, 4))