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2. Parametric form of a ray | Rendering | Computer animation | Khan Academy

Introduces the parametric equation of a ray, expressing any point along its path as a starting point plus a direction scaled by a variable. This is the exact formula a renderer runs millions of times per frame.

Khan Academy Labs · 3 min · Advanced · VFX · VFX · 2016

What you take away

Write the parametric equation of a ray and identify each of its variables.

Watch it

Filed under

Oscar winners for visual effects

Books on visual effects

The workstation

Corsair 128GB DDR5 kit — For Unreal, caches and twelve open applications
Intel Core Ultra 9 285K — Quick Sync, which some codecs still love
Apple Mac mini M4 — The cheapest Mac that cuts 4K without complaint
AMD Ryzen 9 9950X — 16 cores — the sweet spot for a cutting room
NVIDIA GeForce RTX 5080 — The sensible half-price render card
NVIDIA RTX 4000 Ada — Workstation card, single slot, 20GB

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