def test_non_intersection1(self):
"""ckeck intersection de deux segments parallèles"""
A = (0., 0.)
B = (1., 2.)
C = (3., 0.)
D = (4., 2.)
assert(intersection((A, B), (C, D)) is None)
def test_intersection1(self):
"""ckeck intersection d'un segment vertical et un segment horizontal"""
A = (0., 0.)
B = (0., 2.)
C = (-1., 1.)
D = (1., 1.)
assert(intersection((A, B), (C, D)) == (0, 1))
def test_intersection2(self):
"""ckeck intersection de deux segments quelconques sécants"""
A = (0., 0.)
B = (2., 2.)
C = (0., 2.)
D = (2., 0.)
assert(intersection((A, B), (C, D)) == (1, 1))
def test_non_intersection2(self):
"""ckeck intersection de deux segments non sécants
apprtenant à deux droites séquentes"""
A = (0., 0.)
B = (0., 1.)
C = (-1., 2.)
D = (1., 2.)
K = intersection((A, B), (C, D))
assert(K is not None)
assert(not sur_segment(K, (A, B)) or not sur_segment(K, (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))