A library for reading and writing shpcanim files in Rust. This library is still highly experimental.
SHPC files contain ambient lighting sampled at points in a 3D grid. Lighting data is encoded as spherical harmonic coefficients. Spherical harmonics provide a highly efficient way to encode and evaluate irradiance maps for ambient diffuse lighting. Smash Ultimate uses coefficients for the constant L0 band and linear L1 band compressed into a total of 4 one byte values for the red, green, and blue channels. This is a very crude approximation but avoids the ringing artifacts present with higher order approximations that utilize more coefficients.
A program for converting .shpcanim and .shpc files to and from JSON.
cargo build --release
To include this library in a Rust project, add the following line to cargo.toml.
shpc = { git = "https://github.com/ultimate-research/shpc" }