def test_commutativity(multisegments_pair: MultisegmentsPair) -> None:
left_multisegment, right_multisegment = multisegments_pair
result = symmetric_subtract_multisegments(left_multisegment,
right_multisegment)
assert result == symmetric_subtract_multisegments(right_multisegment,
left_multisegment)
def test_equivalents(multisegments_pair: MultisegmentsPair) -> None:
left_multisegment, right_multisegment = multisegments_pair
result = unite_multisegments(left_multisegment, right_multisegment)
assert result == symmetric_subtract_multisegments(
symmetric_subtract_multisegments(left_multisegment,
right_multisegment),
intersect_multisegments(left_multisegment, right_multisegment))
def test_repeated(multisegments_triplet: MultisegmentsTriplet) -> None:
(left_multisegment, mid_multisegment,
right_multisegment) = multisegments_triplet
result = symmetric_subtract_multisegments(
symmetric_subtract_multisegments(left_multisegment, mid_multisegment),
symmetric_subtract_multisegments(mid_multisegment, right_multisegment))
assert are_multisegments_equivalent(
result,
symmetric_subtract_multisegments(left_multisegment,
right_multisegment))
def test_equivalents(multisegments_pair: MultisegmentsPair) -> None:
first, second = multisegments_pair
result = unite_multisegments(first, second)
first_second_symmetric_difference = symmetric_subtract_multisegments(
first, second)
first_second_intersection = intersect_multisegments(first, second)
assert (not is_multisegment(first_second_symmetric_difference)
or not is_multisegment(first_second_intersection)
or result == symmetric_subtract_multisegments(
first_second_symmetric_difference, first_second_intersection))
def test_reversals(multisegments_pair: MultisegmentsPair) -> None:
first, second = multisegments_pair
result = symmetric_subtract_multisegments(first, second)
assert are_compounds_similar(
result,
symmetric_subtract_multisegments(first, reverse_multisegment(second)))
assert are_compounds_similar(
result,
reverse_compound_coordinates(
symmetric_subtract_multisegments(
reverse_multisegment_coordinates(first),
reverse_multisegment_coordinates(second))))
def test_repeated(multisegments_triplet: MultisegmentsTriplet) -> None:
first, second, third = multisegments_triplet
first_second_symmetric_difference = symmetric_subtract_multisegments(
first, second)
second_third_symmetric_difference = symmetric_subtract_multisegments(
second, third)
assert (not is_multisegment(first_second_symmetric_difference)
or not is_multisegment(second_third_symmetric_difference)
or are_multisegments_equivalent(
symmetric_subtract_multisegments(
first_second_symmetric_difference,
second_third_symmetric_difference),
symmetric_subtract_multisegments(first, third)))
def test_reversals(multisegments_pair: MultisegmentsPair) -> None:
left_multisegment, right_multisegment = multisegments_pair
result = symmetric_subtract_multisegments(left_multisegment,
right_multisegment)
assert are_multisegments_similar(
result,
symmetric_subtract_multisegments(
reverse_multisegment(left_multisegment), right_multisegment))
assert are_multisegments_similar(
result,
symmetric_subtract_multisegments(
left_multisegment, reverse_multisegment(right_multisegment)))
def test_right_neutral_element(
empty_multisegment_with_multisegment: MultisegmentsPair) -> None:
empty_multisegment, multisegment = empty_multisegment_with_multisegment
result = symmetric_subtract_multisegments(multisegment, empty_multisegment)
assert are_multisegments_similar(result, multisegment)
def test_basic(multisegments_pair: MultisegmentsPair) -> None:
left_multisegment, right_multisegment = multisegments_pair
result = symmetric_subtract_multisegments(left_multisegment,
right_multisegment)
assert is_multisegment(result)
def __xor__(self, other: Compound[Coordinate]) -> Compound[Coordinate]:
"""
Returns symmetric difference of the multisegment
with the other geometry.
Time complexity:
``O(segments_count * log segments_count)``
Memory complexity:
``O(segments_count)``
where ``segments_count = len(self.segments)``.
>>> from gon.base import EMPTY, Multisegment, Point, Segment
>>> multisegment = Multisegment([Segment(Point(0, 0), Point(1, 0)),
... Segment(Point(0, 1), Point(1, 1))])
>>> multisegment ^ multisegment is EMPTY
True
"""
return (self._unite_with_multipoint(other)
if isinstance(other, Multipoint)
else
(symmetric_subtract_multisegment_from_segment(
other, self,
context=self._context)
if isinstance(other, Segment)
else (symmetric_subtract_multisegments(self, other,
context=self._context)
if isinstance(other, Multisegment)
else NotImplemented)))
def __xor__(self, other: Compound[Coordinate]) -> Compound[Coordinate]:
"""
Returns symmetric difference of the contour with the other geometry.
Time complexity:
``O(vertices_count * log vertices_count)``
Memory complexity:
``O(vertices_count)``
where ``vertices_count = len(self.vertices)``.
>>> from gon.base import EMPTY, Contour, Point
>>> contour = Contour([Point(0, 0), Point(1, 0), Point(0, 1)])
>>> contour ^ contour is EMPTY
True
"""
return (self._unite_with_multipoint(other) if isinstance(
other, Multipoint) else
(symmetric_subtract_multisegment_from_segment(
other, self, context=self._context) if isinstance(
other, Segment) else (symmetric_subtract_multisegments(
self, other, context=self._context) if isinstance(
other, Linear) else NotImplemented)))
def test_commutativity(multisegments_pair: MultisegmentsPair) -> None:
first, second = multisegments_pair
result = symmetric_subtract_multisegments(first, second)
assert result == symmetric_subtract_multisegments(second, first)
def test_self_inverse(multisegment: Multisegment) -> None:
result = symmetric_subtract_multisegments(multisegment, multisegment)
assert is_empty(result)
def test_basic(multisegments_pair: MultisegmentsPair) -> None:
first, second = multisegments_pair
result = symmetric_subtract_multisegments(first, second)
assert is_maybe_linear(result)