Vector = require "lua-tikz3dtools-vector" Matrix = require "lua-tikz3dtools-matrix" Geometry = require "lua-tikz3dtools-geometry" Scene = require "lua-tikz3dtools-scene" Vector:_set_matrix_class(Matrix) Matrix:_set_vector_class(Vector) Geometry:_set_classes(Vector, Matrix) Scene:_set_classes(Vector, Matrix, Geometry) Scene._init_math_env() Scene.register_commands()