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import unittest
from test import support
from mathutils import Matrix, Vector
class MatrixTesting(unittest.TestCase):
def test_matrix_column_access(self):
#mat =
#[ 1 2 3 4 ]
#[ 1 2 3 4 ]
#[ 1 2 3 4 ]
mat = Matrix(((1, 11, 111),
(2, 22, 222),
(3, 33, 333),
(4, 44, 444)))
self.assertEqual(mat[0], Vector((1, 11, 111)))
self.assertEqual(mat[1], Vector((2, 22, 222)))
self.assertEqual(mat[2], Vector((3, 33, 333)))
self.assertEqual(mat[3], Vector((4, 44, 444)))
def test_item_access(self):
args = ((1, 4, 0, -1),
(2, -1, 2, -2),
(0, 3, 8, 3),
(-2, 9, 1, 0))
mat = Matrix(args)
for i in range(4):
for j in range(4):
self.assertEqual(mat[i][j], args[i][j])
self.assertEqual(mat[0][2], 0)
self.assertEqual(mat[3][1], 9)
self.assertEqual(mat[2][3], 3)
self.assertEqual(mat[0][0], 1)
self.assertEqual(mat[3][3], 0)
def test_item_assignment(self):
mat = Matrix() - Matrix()
indices = (0, 0), (1, 3), (2, 0), (3, 2), (3, 1)
checked_indices = []
for col, row in indices:
mat[col][row] = 1
for col in range(4):
for row in range(4):
if mat[col][row]:
checked_indices.append((col, row))
for item in checked_indices:
self.assertIn(item, indices)
def test_matrix_to_3x3(self):
#mat =
#[ 1 2 3 4 ]
#[ 2 4 6 8 ]
#[ 3 6 9 12 ]
#[ 4 8 12 16 ]
mat = Matrix(tuple((i, 2 * i, 3 * i, 4 * i) for i in range(1, 5)))
mat_correct = Matrix(((1, 2, 3), (2, 4, 6), (3, 6, 9)))
self.assertEqual(mat.to_3x3(), mat_correct)
def test_matrix_to_translation(self):
mat = Matrix()
mat[3] = (1, 2, 3, 4)
self.assertEqual(mat.to_translation(), Vector((1, 2, 3)))
def test_matrix_inverse(self):
mat = Matrix(((1, 4, 0, -1),
(2, -1, 2, -2),
(0, 3, 8, 3),
(-2, 9, 1, 0)))
inv_mat = (1 / 285) * Matrix(((195, -57, 27, -102),
(50, -19, 4, 6),
(-60, 57, 18, 27),
(110, -133, 43, -78)))
self.assertEqual(mat.inverted(), inv_mat)
def test_matrix_mult(self):
mat = Matrix(((1, 4, 0, -1),
(2, -1, 2, -2),
(0, 3, 8, 3),
(-2, 9, 1, 0)))
prod_mat = Matrix(((11, -9, 7, -9),
(4, -3, 12, 6),
(0, 48, 73, 18),
(16, -14, 26, -13)))
self.assertEqual(mat * mat, prod_mat)
def test_main():
try:
support.run_unittest(MatrixTesting)
except:
import traceback
traceback.print_exc()
# alert CTest we failed
import sys
sys.exit(1)
if __name__ == '__main__':
test_main()
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