{"version":"1.0","type":"rich","title":"Kyle's Mouse Follower","description":"A circle tracks the mouse across a full-screen SVG, with its color and radius changing continuously based on the cursor's x and y coordinates. The example demonstrates a unidirectional data flow pattern: mouse events trigger a `setState` callback, which updates a centralized state object that drives the rendering. Using D3 v7's `select`, `join`, and event handling, the circle's `cx`, `cy`, `r`, and `fill` attributes are recomputed from the current state on each render. The color is derived from the coordinates in an RGB string, creating a gradient-like effect as the mouse moves.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/1f881d9b5ca84288a188744e6bfbcbdb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}