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Ray Tracing from the Ground Up by Kevin Suffern

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Chapter 24

Mirror Reflection

image

Reflective spheres by Burt Flugleman, Rundle Street Mall, Adelaide. Photograph by Kevin Suffern.

Objectives

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 ...

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