{"version":"1.0","type":"rich","title":"Color Changing Mouse Follower","description":"A circle follows the mouse cursor across the canvas, and a click randomly changes its fill color. The visualization demonstrates a unidirectional data flow pattern using D3 v7, where mouse events update a state object which then triggers a re-render of the SVG. It uses D3's `select` and `.join` operations to efficiently create and update the circle element, while the rendering logic resides in a separate `viz.js` module. The circle's position and color are driven entirely by the state managed through a custom `setState` function.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"","width":960,"height":500,"cache_age":3600}