Crate rustmatrix 

rustmatrix

Rust-backed T-matrix scattering for nonspherical particles.

This crate is a port of the numerical core of pytmatrix, which itself wraps M. I. Mishchenko’s Fortran T-matrix code.

Layout

• quadrature – Gauss-Legendre nodes and weights (port of Mishchenko’s GAUSS).
• special – spherical Bessel / Hankel functions, real and complex argument (port of RJB, RYB, CJB).
• wigner – associated Legendre / Wigner d-function helpers (VIG, VIGAMPL).
• shapes – particle shape functions (RSP1..RSP4), surface-area helpers.
• mie – closed-form Mie scattering for spheres; used as the axis_ratio=1 reference for parity testing.
• tmatrix – the general spheroid/cylinder/Chebyshev T-matrix solver (direct port of CALCTMAT, CONST, VARY, TMATR0, TMATR).
• amplitude – amplitude and phase matrix evaluation (CALCAMPL, AMPL).
• [pybindings] – PyO3 bindings exposing calctmat / calcampl to Python.

Modules

amplitude

Amplitude and phase matrix evaluation — port of Mishchenko’s CALCAMPL and AMPL subroutines.

mie

Closed-form Mie scattering for a homogeneous sphere.

quadrature

Gauss-Legendre quadrature — port of Mishchenko’s GAUSS subroutine.

shapes

Particle-shape radii — ports of Mishchenko’s RSP1..RSP4.

special

Spherical Bessel functions — ports of Mishchenko’s RJB, RYB, CJB.

tmatrix

Core T-matrix solver.

wigner

Associated Legendre / Wigner d-function helpers.