def animate():
while True:
line = random_middle_line()
d = DividingLine(synthetic_image(line=line))
d.traverse(line, True)
#d.traverse_np(line, True)
pylab.clf()
pylab.imshow(d.debug)
pylab.waitforbuttonpress(0.01)
def test_dividingline(self):
line = [1,1,-300]
image = synthetic_image((640,480), line)
d = DividingLine(image)
result = d.traverse(line)
assert result['p0'] + result['n0'] == image.shape[0] * image.shape[1]
assert result['p1'] + result['n1'] == image.sum()
assert result['p2'] + result['n2'] == (image.astype('i8')**2).sum()
d2 = DividingLine(image)
d2.traverse(line)
assert np.all(d2.debug == d.debug)
within_eps = lambda a, b: np.all(np.abs(a - b) < 1e-5)
assert within_eps(float(result['p1'])/result['p0'], 255)
assert within_eps(float(result['n1'])/result['n0'], 0)
