{"version":"1.0","type":"rich","title":"Mouse Finder","description":"A mouse tracker renders a single circle that follows the cursor, with its radius scaling dynamically based on movement speed. The visualization uses D3 v7’s selection and event handling, attaching a `mousemove` listener to an SVG that spans the full window. Movement deltas (`event.movementX` and `event.movementY`) drive a formula calculating radius, clamping it between 5 and 100 pixels. The circle uses transparent fill with a black stroke, and state updates trigger re-renders through a custom `setState` pattern, while `selectAll().join()` manages the SVG and circle elements.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/9080150e495d42eda222ca3a5a192b2a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}