Chapter 1

An Introduction to 3D: Recreating the World Inside Your Computer, or Not

You may be under the impression that working in 3D is an attempt to create the real world inside of your computer. It’s a tempting and logical thought—the world itself is 3D. It consists of objects that have a certain form, the surfaces of which have properties that make them appear a certain way, and of light that allows us to see the whole thing. We can create form, surface, and light inside of a computer, so wouldn’t the best approach just be to make everything inside the computer as close to the way it is in the real world and be done with it?

It turns out the answer is no—accurately simulating the world is not the best approach. That way madness lies.

We ...

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