def test_concave(self):
""" test si un quadrilatere concave est reconnu
"""
A = (0., 3.)
B = (4., 3.)
C = (2., 2.)
D = (3., 0.)
assert(not convexe(A, B, C, D))
def test_convexe(self):
""" test si un quadrilatere convexe est reconnu
"""
A = (1., 3.)
B = (2., 4.)
C = (5., 0.)
D = (0., 1.)
diag1 = (A, C)
diag2 = (B, D)
K = intersection(diag1, diag2)
assert(K is not None)
assert(sur_segment(K, diag1))
assert(sur_segment(K, diag2))
assert(convexe(A, B, C, D))
