open_simplex_2 library Null safety

Classes

OpenSimplex2
Abstract base class for OpenSimplex2 noise that is the super type for the public API of both OpenSimplex2F and OpenSimplex2S.
OpenSimplex2F
K.jpg's OpenSimplex 2, faster variant.
OpenSimplex2S
K.jpg's OpenSimplex 2, smooth variant ("SuperSimplex").