def test_bbox_intersection():
"""
Test expected return when there is a valid intersection.
"""
# With self
bb = AxisAlignedBoundingBox([1, 1], [2, 2])
assert bb.intersection(bb) == bb
# Diagonal
# +---+
# | +---+
# +-|-+ |
# +---+
bb1 = AxisAlignedBoundingBox([0, 0], [2, 2])
bb2 = AxisAlignedBoundingBox([1, 1], [3, 3])
expected = AxisAlignedBoundingBox([1, 1], [2, 2])
assert bb1.intersection(bb2) == expected
assert bb2.intersection(bb1) == expected
# ``other`` fully contained with, and ``other`` fully enclosing
# +-----+
# | +-+ |
# | +-+ |
# +-----+
bb1 = AxisAlignedBoundingBox([3, 2, 8], [6, 5, 11])
bb2 = AxisAlignedBoundingBox([4, 3, 9], [5, 4, 10])
expected = bb2
assert bb1.intersection(bb2) == expected
assert bb2.intersection(bb1) == expected
def test_bbox_no_intersection():
"""
Test that the expected conditions result in no intersection.
"""
# +-+
# +-+
# +-+
# +-+
bb1 = AxisAlignedBoundingBox([0, 0], [1, 1])
bb2 = AxisAlignedBoundingBox([3, 3], [4, 4])
assert bb1.intersection(bb2) is None
assert bb2.intersection(bb1) is None
# Edge adjacency is not intersection
# +-+-+
# +-+-+
bb1 = AxisAlignedBoundingBox([0, 0], [1, 1])
bb2 = AxisAlignedBoundingBox([1, 0], [2, 1])
assert bb1.intersection(bb2) is None
assert bb2.intersection(bb1) is None
# +-+
# +-+
# +-+
bb1 = AxisAlignedBoundingBox([0, 0], [1, 1])
bb2 = AxisAlignedBoundingBox([0, 1], [1, 2])
assert bb1.intersection(bb2) is None
assert bb2.intersection(bb1) is None