Lecture 9: Ray Tracing (35)
briana-jin-zhang

Professsor Ren said that this was because the surface normal has only one non-zero value in x, y, z. A little confused because then I want to say the vector is (1, 0, 0) by symmetry, but that vector is parallel to the x-axis.

briana-jin-zhang

So what is the vector? Are we supposed to be just looking at it in 2D instead?

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