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# Copyright (c) 2019-2025, Saransh Chopra, Henry Schreiner, Eduardo Rodrigues, Jonas Eschle, and Jim Pivarski.
#
# Distributed under the 3-clause BSD license, see accompanying file LICENSE
# or https://github.com/scikit-hep/vector for details.
from __future__ import annotations
import numpy
import vector.backends.numpy
import vector.backends.object
def test_planar_object():
v1 = vector.backends.object.VectorObject2D(
azimuthal=vector.backends.object.AzimuthalObjectXY(0.1, 0.2)
)
v2 = vector.backends.object.VectorObject2D(
azimuthal=vector.backends.object.AzimuthalObjectXY(-0.3, -0.6)
)
v3 = vector.backends.object.VectorObject2D(
azimuthal=vector.backends.object.AzimuthalObjectXY(0.3, 0.6)
)
assert v1.is_antiparallel(-v1)
assert v2.is_antiparallel(-v2)
assert v3.is_antiparallel(-v3)
assert v1.is_antiparallel(v2)
assert v2.is_antiparallel(v3)
assert not v1.is_antiparallel(v3)
for t1 in "xy", "rhophi":
for t2 in "xy", "rhophi":
tr1, tr2 = (
getattr(v1, "to_" + t1)(),
getattr(v2, "to_" + t2)(),
)
assert tr1.is_antiparallel(tr2)
def test_planar_numpy():
v1 = vector.backends.numpy.VectorNumpy2D(
[(0.1, 0.2)],
dtype=[("x", numpy.float64), ("y", numpy.float64)],
)
v2 = vector.backends.numpy.VectorNumpy2D(
[(-0.3, -0.6)],
dtype=[("x", numpy.float64), ("y", numpy.float64)],
)
v3 = vector.backends.numpy.VectorNumpy2D(
[(0.3, 0.6)],
dtype=[("x", numpy.float64), ("y", numpy.float64)],
)
assert v1.is_antiparallel(-v1)
assert v2.is_antiparallel(-v2)
assert v3.is_antiparallel(-v3)
assert v1.is_antiparallel(v2)
assert v2.is_antiparallel(v3)
assert not v1.is_antiparallel(v3)
for t1 in "xy", "rhophi":
for t2 in "xy", "rhophi":
tr1, tr2 = (
getattr(v1, "to_" + t1)(),
getattr(v2, "to_" + t2)(),
)
assert tr1.is_antiparallel(tr2)
def test_spatial_object():
v1 = vector.backends.object.VectorObject3D(
azimuthal=vector.backends.object.AzimuthalObjectXY(0.1, 0.2),
longitudinal=vector.backends.object.LongitudinalObjectZ(0.3),
)
v2 = vector.backends.object.VectorObject3D(
azimuthal=vector.backends.object.AzimuthalObjectXY(-0.3, -0.6),
longitudinal=vector.backends.object.LongitudinalObjectZ(-0.9),
)
v3 = vector.backends.object.VectorObject3D(
azimuthal=vector.backends.object.AzimuthalObjectXY(0.3, 0.6),
longitudinal=vector.backends.object.LongitudinalObjectZ(0.9),
)
assert v1.is_antiparallel(-v1)
assert v2.is_antiparallel(-v2)
assert v3.is_antiparallel(-v3)
assert v1.is_antiparallel(v2)
assert v2.is_antiparallel(v3)
assert not v1.is_antiparallel(v3)
for t1 in "xyz", "xytheta", "xyeta", "rhophiz", "rhophitheta", "rhophieta":
for t2 in "xyz", "xytheta", "xyeta", "rhophiz", "rhophitheta", "rhophieta":
tr1, tr2 = (
getattr(v1, "to_" + t1)(),
getattr(v2, "to_" + t2)(),
)
assert tr1.is_antiparallel(tr2)
def test_spatial_numpy():
v1 = vector.backends.numpy.VectorNumpy3D(
[(0.1, 0.2, 0.3)],
dtype=[("x", numpy.float64), ("y", numpy.float64), ("z", numpy.float64)],
)
v2 = vector.backends.numpy.VectorNumpy3D(
[(-0.3, -0.6, -0.9)],
dtype=[("x", numpy.float64), ("y", numpy.float64), ("z", numpy.float64)],
)
v3 = vector.backends.numpy.VectorNumpy3D(
[(0.3, 0.6, 0.9)],
dtype=[("x", numpy.float64), ("y", numpy.float64), ("z", numpy.float64)],
)
assert v1.is_antiparallel(-v1)
assert v2.is_antiparallel(-v2)
assert v3.is_antiparallel(-v3)
assert v1.is_antiparallel(v2)
assert v2.is_antiparallel(v3)
assert not v1.is_antiparallel(v3)
for t1 in "xyz", "xytheta", "xyeta", "rhophiz", "rhophitheta", "rhophieta":
for t2 in "xyz", "xytheta", "xyeta", "rhophiz", "rhophitheta", "rhophieta":
tr1, tr2 = (
getattr(v1, "to_" + t1)(),
getattr(v2, "to_" + t2)(),
)
assert tr1.is_antiparallel(tr2)
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