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Force layout (foci)

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TTipTopCoder
Last edited May 23, 2018
Created on May 23, 2018

A force-directed layout arranges 1,000 circles into four distinct clusters, each tied to one of four color-coded categories. The simulation uses `d3.forceSimulation` with `d3.forceX` and `d3.forceY` to pull nodes toward quadrant-specific foci, while `d3.forceCollide` prevents overlap and `d3.forceManyBody` applies a weak charge. A custom `pythag` function constrains every node inside a large circular boundary drawn as an SVG circle. The visualization renders in SVG, with node positions updated each tick via D3’s data join.

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