def test_translation():
assert transformations.translation().shape == (2, 1)
for i in range(NUM_RANDOM_TESTS):
transf = transformations.translation(direction_of_change='x')
assert transf[0] != 0
assert transf[1] == 0
transf = transformations.translation(direction_of_change='y')
assert transf[0] == 0
assert transf[1] != 0
def test_translation():
assert transformations.translation().shape == (2, 1)
for i in range(NUM_RANDOM_TESTS):
transf = transformations.translation(direction_of_change='x')
assert transf[0] != 0
assert transf[1] == 0
transf = transformations.translation(direction_of_change='y')
assert transf[0] == 0
assert transf[1] != 0
def test_overall_transformation():
transf = sympy.Matrix([[1, 2], [3, 4]])
transf_2 = sympy.Matrix([[2, 3], [4, 5]])
translation = transformations.translation()
coords = sympy.Matrix([[x], [y]])
assert transformations.overall_transformation([transf, transf_2]) == transf_2 * transf * coords
assert transformations.overall_transformation([transf, transf_2, translation]) == transf_2 * transf * coords + translation
def test_overall_transformation():
transf = sympy.Matrix([[1, 2], [3, 4]])
transf_2 = sympy.Matrix([[2, 3], [4, 5]])
translation = transformations.translation()
coords = sympy.Matrix([[x], [y]])
assert transformations.overall_transformation(
[transf, transf_2]) == transf_2 * transf * coords
assert transformations.overall_transformation(
[transf, transf_2,
translation]) == transf_2 * transf * coords + translation
