Functional Quadtree Implementation in Clojure for Browser-Based Visualization
By
lbj
Pure flour-power. Hearty enough to carry you through lunch.
Summary
This article presents a functional programming implementation of Quadtrees in Clojure that runs in the browser. Quadtrees are tree data structures used to provide varying levels of detail in different regions of data, optimizing resource usage. The author explains how to build both the functional Quadtree data structure and an interactive visualization where mouse position determines the level of detail displayed, simulating a map view with crisp details near the user's position and coarser details elsewhere.
Key quotes
· 3 pulledA Quadtree is a tree data structure, which is useful for giving more focus/detail to certain regions of your data, while saving resources elsewhere.
I could only find a couple tutorials/guides and both were imperative, so I figured it'd be fun to do a functional version in Clojure which runs in the browser.
Imagine the canvas to be a top-view of map and your mouse-position to be the spot you're occupying on the map. Near you, you want crisp details, small cells of high resolution.
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