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For Vox, Cleo Abram explains why game designers use triangles when designing 3D animated games (and not, say, circles or rectangles).

Triangles are a key part of how these gorgeous, detailed games appear on your screen — the hidden heroes we should all thank as we play. This simple shape helps keep the number of computations needed for each detail as low as possible, allowing the player’s computer to process these elaborate games.

I like how the arms race among game developers to create more and more realistic objects out of smaller and smaller triangles mirrors the process in differential calculus of finding the slope of a curve by — wait for it — using smaller and smaller triangles. The game designers are going to have a problem truly getting to infinitesimally small triangles though…

Hat tip to kottke.org

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