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3. Calculating factorials | Crowds | Computer animation | Khan Academy

Introduces factorial notation as the count of ways to arrange a full set of items in sequence, the building block behind the casting problems Pixar's crowd artists solve for background characters. Works through a small example before scaling it up.

Khan Academy Labs · 2 min · Advanced · ANI · Animation · 2016

What you take away

Compute n! and explain why it counts every ordering of n distinct items.

Watch it

Filed under

Oscar winners for animated feature

Books on animation

Timing for Animation — Harold Whitaker, John Halas
Cartoon Animation — Preston Blair
Character Animation Crash Course! — Eric Goldberg
Stop Motion: Craft Skills for Model Animation — Susannah Shaw
The Advanced Art of Stop-Motion Animation — Ken A. Priebe
The Art and Science of Digital Compositing — Ron Brinkmann

The workstation

G.Skill 64GB DDR5-6000 kit — The floor for 4K raw with effects
Western Digital WD_BLACK SN850X 4TB — The other one, usually cheaper
Calibrite Display Pro HL — Calibrates the monitor you are trusting
SanDisk Professional G-DRIVE 8TB — Desktop archive drive built for footage
Corsair 128GB DDR5 kit — For Unreal, caches and twelve open applications
Dell UltraSharp U2723QE — The sensible 4K second monitor

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