Mouse Follower with d3_01

Mouse Follower

A circle follows the mouse cursor across an SVG canvas, centering itself on the pointer’s coordinates. The example demonstrates React state management to track mouse movement, updating the circle’s position on every move event. It uses React’s `useState` and `useCallback` hooks alongside D3 v6 for the SVG rendering, with an initial circle centered at 480, 250. The visualization responds interactively in real time, showcasing a minimal integration of React and D3 for dynamic graphics.

WWolfgang

Mouse Follower

An interactive SVG visualization renders a single circle that follows the mouse cursor across a 960-by-500 canvas. The React component tracks pointer movement via the `onMouseMove` event and updates the circle’s `cx` and `cy` attributes through `useState` and `useCallback`. Initially positioned at the canvas center, the circle moves smoothly with the cursor. The example demonstrates state-driven rendering in React 17 with D3 v7, using plain SVG elements rather than data joins or scales. No external data source is involved; the visualization purely reacts to user input.

LLove Wessman

Mouse Follower

A circle follows the mouse cursor as it moves across an SVG canvas. The React component tracks pointer coordinates via the `onMouseMove` event and updates the circle’s `cx` and `cy` attributes through `useState` and `useCallback`. Rendered with D3 v5’s SVG helpers within React 16.9, the example demonstrates real-time state-driven positioning without external data.

Bboreilly26

Mouse Follower

A circle follows the mouse cursor across an SVG canvas, updating its position in real time as the pointer moves. The visualization uses React state to track mouse coordinates via the `onMouseMove` event handler and renders a single `<circle>` element with D3 v7’s selection-free React integration. The SVG viewport is fixed at 960 by 500 pixels, and the circle’s center tracks the clientX and clientY values directly.

Kkbrookshire420

Mouse Follower

A circle follows the mouse cursor across an SVG canvas, updating its position in real time. The visualization is built with React and D3 v6, using React's `useState` and `useCallback` hooks to track and update the mouse coordinates from the `onMouseMove` event. The circle is rendered as an SVG element with a fixed radius, and its `cx` and `cy` attributes are bound to the current mouse position. The example demonstrates a simple interactive pattern in a React-D3 integration.

Yyjhouma

Mouse Follower

A mouse follower example renders a single SVG circle that tracks the cursor's position within a 960 by 500 viewport. Using React state hooks (`useState` and `useCallback`), the component updates the circle's `cx` and `cy` coordinates on every `mousemove` event. D3 version 7 is loaded for potential utilities, though the interaction relies solely on React's event handling and SVG rendering. The circle starts centered and moves fluidly, demonstrating simple interaction between DOM events and React's declarative UI updates.

TTatyana Milanova

Mouse Follower

A single circle follows the mouse cursor in real time across an SVG canvas. The circle’s position updates directly from pointer movement events, not from any external dataset. The example uses React’s `useState` hook to manage the live mouse coordinates, with an `onMouseMove` handler on the SVG element. D3.js v7 is loaded in the page, though the interaction relies entirely on React state updates and native SVG rendering. The SVG viewport is a fixed 960 by 500 pixels, and the circle has a radius of 30 pixels.

BBen Brophy

Mouse Follower

A single circle follows the mouse cursor across an SVG canvas, updating its position in real time. The visualization demonstrates React’s state management and event handling, using the `useState` hook to track cursor coordinates and the `onMouseMove` event to update them. The circle’s center is bound to the `mousePosition` state, and its radius is fixed at 30 pixels. The code renders the scene with React and ReactDOM, while D3 is loaded but not explicitly used in the visible logic.

JJakub