def test_rotate(self):
m = Matrix()
# rotate 90 degrees CCW
m = m.rotate_ccw(math.pi / 2)
expected = [[0, -1, 0],
[1, 0, 0],
[0, 0, 1]]
self.compareMatrix(m.matrix, expected)
m2 = Matrix()
m2 = m2.rotate_ccw(math.pi)
expected2 = [[-1 , 0, 0],
[0, -1, 0],
[0, 0, 1]]
self.compareMatrix(m2.matrix, expected2)
def test_combine(self):
m = Matrix()
# rotate 90 degrees CCW
m = m.translate(x=4, y=-2)
m = m.rotate_ccw(math.pi / 2)
m = m.scale(scale_x=2, scale_y=3)
expected = [[2, -1, 4],
[1, 3, -2],
[0, 0, 1]]
self.compareMatrix(m.matrix, expected)