{"version":"1.0","type":"rich","title":"Fork of Untitled","description":"Twenty colored rectangles bounce and slide within a fixed SVG canvas, colliding with each other and the boundaries. The animation runs on a `d3.forceSimulation` with custom forces for rectangular collision and bounding-box containment, while a drag handler lets users move any rectangle. Each particle has a random size, velocity, and direction, with a distinct color from `d3.schemeCategory20`. The custom `rectCollide` force uses a `d3.quadtree` to efficiently resolve overlaps.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"","width":960,"height":500,"cache_age":3600}