{"version":"1.0","type":"rich","title":"Mouse Follower","description":"This example demonstrates a red, green, or blue circle that tracks the mouse pointer across an SVG canvas, changing to a random hex color on each click. It uses D3’s `select` and `pointer` methods to capture mouse coordinates and update state through immutable update patterns, spreading the previous state object and overwriting the `x`, `y`, and `color` properties. The circle’s position and fill are bound directly to the current state values via D3 joins.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"","width":960,"height":500,"cache_age":3600}