# Module: tfg.math.spherical_harmonics

This module implements routines required for spherical harmonics lighting.

## Functions

`evaluate_legendre_polynomial(...)`: Evaluates the Legendre polynomial of degree l and order m at x.

`evaluate_spherical_harmonics(...)`: Evaluates a point sample of a Spherical Harmonic basis function.

`generate_l_m_permutations(...)`: Generates permutations of degree l and order m for spherical harmonics.

`generate_l_m_zonal(...)`: Generates l and m coefficients for zonal harmonics.

`integration_product(...)`: Computes the integral of harmonics1.harmonics2 over the sphere.

`rotate_zonal_harmonics(...)`: Rotates zonal harmonics.

`tile_zonal_coefficients(...)`: Tiles zonal coefficients.

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