pub fn cartesian_translation(
to: Mode,
from: Mode,
k: Complex,
displacement: [f64; 3],
helicity: bool,
radial: Radial,
) -> Result<CartesianTranslation>Expand description
Translation coefficient of the source mode from to the destination mode to, with
its derivatives.
displacement is the destination position minus the source position. Singular waves
give zero at the origin and at subnormal displacements.
treams-rs extension: the Cartesian single-pair jet behind the expansion matrices and
the tests of the polar coefficients; treams.sw.translate takes polar arguments.