Implements a floating-origin world manager that maintains absolute double-precision positions for each celestial object and recomputes local Float32 positions relative to the camera each frame. This pattern enables seamless rendering from 0.5m to 1e15 km without precision loss. It is fully self-contained, registers objects via a simple API, and could be extracted to any large-scale 3D application requiring high-precision positioning.

Pure-function Kepler equation solver using Newton-Raphson iteration with eccentric anomaly correction and coordinate frame transforms. Returns (x,y,z) in the ecliptic frame given orbital elements and Julian Date. No internal imports—only math. Demonstrates robust handling of near-parabolic orbits (e>0.99) and hyperbolic cases. Could be reused as a standalone library for any orbital mechanics simulation.

A single GLSL-based ray-marched atmosphere shader implementing a simplified Nishita scattering model. It works inside and outside the atmosphere, supports planet-specific parameters (Rayleigh/Mie coefficients, ozone layer, suspended dust), and integrates seamlessly with the planet material system. The JavaScript module sets up uniforms and provides a factory function for creating atmosphere meshes. Demonstrates advanced rendering technique in a reusable way.

A lightweight, dependency-free i18n system supporting seven languages with a cascading fallback (explicit language → en → zh → fallback key). It provides t() and bodyName() translation functions, applyDomI18n() for DOM updates, and integrates with the locale detection. The dictionary is embedded as a large object of ~200 keys. This pattern could be extracted for any multilingual web application.