Original Source Code

Lighting Tool - https://www.lmmp.nasa.gov/gitrepo/lighting-tool.git

Android App - https://www.lmmp.nasa.gov/gitrepo/android-lmmpmobile.git

Documentation

• Lighting Tool User Guide

Git

• Pro Git

Ray Tracing Background

• Ray tracing (graphics) - wikipedia
• Ray tracing article - UNC
• Ray tracing book chapter

POV-Ray - The Persistence of Vision Raytracer (Freeware multi-platform ray-tracing package)