Animated Quadtree

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Animated Quadtree

✓ Published0🌍 Public

Last edited Apr 17, 2016

Created on Apr 15, 2016

This animation demonstrates how a quadtree structure changes as new points are added, displaying each red dot as a point, gray rectangles as leaf nodes, and black lines as internal boundaries. The code uses the `d3_quadtree` JavaScript library with `tree.add`, `tree.visit`, and canvas rendering via `getContext("2d")`. Points are generated using `d3_random.randomNormal` to create a normal distribution centered at the midpoint of the canvas, with each addition triggering a partial redraw to highlight the affected region.

AI-generated description

This animation shows how successively adding points to a quadtree changes its structure. Each red dot represents a point; each gray rectangle represents a leaf node in the quadtree; black lines separate internal nodes. Assuming no coincident points, each gray leaf contains exactly one point. (If some points are coincident, the leaf node contains a linked list of the coincident points.)

gpl-3.0 Licensed

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