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quadtree

A free particle demo — play it in your browser, no install. Particle collision detection using quadtree.

by @s-litvin · s-litvin/quadtree on GitHubLANG JavaScript★ 2HOSTED ON S-LITVIN.GITHUB.IOUPDATED 7 Feb 2022

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From the README

Particle collision detection using quadtree. A quadtree is a tree data structure in which each internal node has exactly four children.

Quadtrees are the two-dimensional analog of octrees and are most often used to partition a two-dimensional space by recursively subdividing it into four quadrants or regions.

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