By the end of this chapter, you should:
- understand how mirror reflections are modeled in ray tracing;
- have seen some interesting examples of reflections;
- have implemented a reflective material.
I’ll discuss here how ray tracing simulates part of the indirect illumination in a scene. This ray-tracing technique was first developed by Whitted (1980) and is often referred to as Whitted-style ray tracing. Up until now, we have only ray traced the primary rays, but here we will trace the reflected rays as they ...