C++ Ray Tracer from Scratch Without AI

A developer (username themartiano) published a C++ ray tracer on GitHub that was written entirely from scratch without any AI code generation. The project implements basic ray tracing algorithms: recursive reflections, refraction, shadows, and anti-aliasing. It uses no external graphics libraries, just standard C++ and math. The author notes that writing the ray tracer manually was an educational exercise to understand the mathematics behind computer graphics. The project includes a Makefile and renders a scene with spheres and planes to a PPM image. The developer contrasts this with AI-generated code, claiming that manual implementation yields better understanding and performance control.