def test_subtraction07(self):
a = Segment(0.0, 1.0)
b = Segment(0.1, 0.2)
c = Segment(0.4, 0.8)
assert len(
list(not t.is_degenerate() for t in flatten(
s.subtraction(c) for s in a.subtraction(b)))) == 3
def test_shadow_02(self):
s = Edge(R3(0.0, 0.0, 1.0), R3(1.0, 1.0, 1.0))
f = Facet([
R3(0.0, 0.0, 0.0),
R3(2.0, 0.0, 0.0),
R3(2.0, 2.0, 0.0),
R3(0.0, 2.0, 0.0)
])
s.shadow(f)
assert s.gaps[0].approx(Segment(0.0, 1.0))
def test_intersect_05(self):
s = Edge(R3(0.0, 0.0, 1.0), R3(1.0, 0.0, -1.0))
a = R3(1.0, 1.0, 0.0)
n = R3(0.0, 0.0, 1.0)
assert s.intersect_edge_with_normal(a, n).approx(Segment(0.5, 1.0))
def test_subtraction04(self):
a, b = Segment(-1.0, 2.0), Segment(0.0, 1.0)
assert all(s.is_degenerate() for s in b.subtraction(a))
def test_subtraction03(self):
a, b = Segment(-1.0, 2.0), Segment(0.0, 1.0)
assert all(not s.is_degenerate() for s in a.subtraction(b))
def test_intersect03(self):
a = Segment(0.0, 1.0)
b = Segment(0.0, 2.0)
c = Segment(0.0, 1.0)
d = Segment(0.0, 2.0)
assert a.intersect(b).approx(d.intersect(c))
a = Segment(0.0, 1.0)
b = Segment(0.5, 1.0)
c = Segment(0.0, 1.0)
d = Segment(0.5, 1.0)
assert a.intersect(b).approx(d.intersect(c))
a = Segment(0.0, 1.0)
b = Segment(-0.5, 0.0)
c = Segment(0.0, 1.0)
d = Segment(-0.5, 0.0)
assert a.intersect(b).approx(d.intersect(c))
a = Segment(0.0, 1.0)
b = Segment(-0.5, -0.1)
c = Segment(0.0, 1.0)
d = Segment(-0.5, -0.1)
assert a.intersect(b).approx(d.intersect(c))
def test_intersect02(self):
a = Segment(0.0, 1.0)
b = Segment(0.0, 2.0)
c = Segment(1.0, 0.0)
assert a.intersect(b).approx(c)
def test_degenerate03(self):
assert Segment(0.0, -1.0).is_degenerate()
def test_degenerate01(self):
assert not Segment(0.0, 1.0).is_degenerate()
def test_subtraction05(self):
a = Segment(0.0, 1.0)
b = Segment(0.0, 0.5)
c = Segment(0.5, 1.0)
assert all(t.is_degenerate() for t in flatten(
s.subtraction(c) for s in a.subtraction(b)))