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[digital] Visual Effects and Compositing by Jon Gress

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Chapter 4. 3D for VFX

VFX have advanced tremendously since their humble stage beginnings as practical special effects in the late 1800s and early 1900s. With the rapid advancements in computer graphics technologies and techniques in the late 1990s and early 2000s, those models, miniatures, and puppets rapidly gave way to the world of 3D CGI (computer-generated imagery). In 3D, anything can be created—from props and digital prosthetics to entire sets and even full 3D worlds.

How 3D CGI Is Created

At the heart of 3D CGI is the concept of representing the 3D world on a 2D screen. To do this, computer software must somehow calculate and simulate points in space in the 3D world in order to draw (or render) points (also known as vertices) and surfaces ...

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