def test_on_poly_edge():
# type: () -> None
poly = Polygon3D([(0, 4, 0), (0, 0, 0), (4, 0, 0), (4, 4, 0)])
edge1 = Segment(Vector3D(0, 1, 0), Vector3D(0, 2, 0))
edge2 = Segment(Vector3D(1, 1, 0), Vector3D(1, 2, 0))
assert edge1._on_poly_edge(poly)
assert not edge2._on_poly_edge(poly)
def test_segment_repr():
# type: () -> None
edge = Segment(Vector3D(0, 0, 0), Vector3D(2, 0, 0))
assert eval(repr(edge)) == edge
def test_collinear():
# type: () -> None
# same line
edge1 = Segment(Vector3D(0, 0, 0), Vector3D(1, 1, 1))
edge2 = Segment(Vector3D(0, 0, 0), Vector3D(1, 1, 1))
assert edge1._is_collinear(edge2)
# opposite direction line
edge1 = Segment(Vector3D(1, 1, 1), Vector3D(0, 0, 0))
edge2 = Segment(Vector3D(0, 0, 0), Vector3D(1, 1, 1))
assert edge1._is_collinear(edge2)
# edge1 is longer
edge1 = Segment(Vector3D(0, 0, 0), Vector3D(4, 4, 4))
edge2 = Segment(Vector3D(1, 1, 1), Vector3D(2, 2, 2))
assert edge1._is_collinear(edge2)
# same start point, different lengths
edge1 = Segment(Vector3D(0, 0, 0), Vector3D(1, 1, 1))
edge2 = Segment(Vector3D(0, 0, 0), Vector3D(2, 2, 2))
assert edge1._is_collinear(edge2)
# something being missed
edge1 = Segment(Vector3D(1, 4, 0), Vector3D(1, 0, 0))
edge2 = Segment(Vector3D(1, 0, 0), Vector3D(1, 2, 0))
assert edge1._is_collinear(edge2)
# parallel
edge1 = Segment(Vector3D(0, 0, 0), Vector3D(1, 1, 1))
edge2 = Segment(Vector3D(1, 0, 0), Vector3D(2, 1, 1))
assert not edge1._is_collinear(edge2)