vispy.util.tests.test_quaternion module

vispy.util.tests.test_quaternion.test_quaternion_axis_angle_extreme_vector_magnitudes()

Test the rotation axis of tiny and large vectors.

vispy.util.tests.test_quaternion.test_quaternion_exp()

Test quaternion exponential for real and imaginary inputs.

vispy.util.tests.test_quaternion.test_quaternion_exp_log_round_trip()

Test that exp(log(q)) recovers a non-real quaternion.

vispy.util.tests.test_quaternion.test_quaternion_exp_overflow()

Preserve NumPy’s overflow behavior and keep zero components at zero.

vispy.util.tests.test_quaternion.test_quaternion_log()

Test quaternion logarithm for unit and non-unit inputs.

vispy.util.tests.test_quaternion.test_quaternion_log_domain()

Test the real-axis branch convention and the undefined zero input.

vispy.util.tests.test_quaternion.test_quaternion_log_extreme_vector_magnitudes()

Test tiny and large vectors without intermediate scale overflow.

vispy.util.tests.test_quaternion.test_quaternion_log_negative_scalar()

Test the logarithm quadrant for a negative scalar and nonzero vector.

vispy.util.tests.test_quaternion.test_quaternion_norm_extreme_magnitudes()

Test norm without squaring overflow or underflow.