Things to Watch Out For
A ray tracer is math-heavy. There’s no getting around it. It works its magic by crunching numbers, finding intersections between lines and shapes, computing reflections and refractions, and blending colors. So, yes, there will be a great deal of math here, but I will mostly give it to you, ready to implement. You’ll find little or no focus on where the math comes from, no derivations of formulas, no explanations of why an equation does what it does. You’ll see the formulas and, where necessary, walk through how to implement them, but you won’t wade through proofs and derivations. If the proofs and derivations are what you particularly enjoy, you can always find a great deal of information about them online.
Also, number-crunching ...
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