{"version":"1.0","type":"rich","title":"Smiley Face Part 1","description":"A single gray circle follows the mouse cursor across an SVG canvas, its position updating live as the pointer moves. The visualization demonstrates React state management with the `useState` and `useCallback` hooks, where mouse coordinates from the `onMouseMove` event drive the circle’s `cx` and `cy` attributes. Rendered via ReactDOM into a root div, the SVG uses D3 v6 for its helper functions, with a fixed 960×500 viewport and a 30-pixel radius. No external data is loaded; the interaction is purely event-driven.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"","width":960,"height":500,"cache_age":3600}