Mouse Follower

Mouse Follower

A smiley face follows the mouse cursor across a full-screen SVG canvas. The React component tracks pointer coordinates via the `onMouseMove` event and stores them in state with the `useState` hook, updating the circle's `cx` and `cy` attributes through re-rendering. The `useCallback` hook memoizes the event handler, while rendering relies on React DOM and plain SVG elements with no external charting library.

PPabloDraHer

Mouse Follower

A smiley face follows the mouse cursor across an SVG canvas, with its position updating in real time. The visualization uses React state and the `useState` and `useCallback` hooks to track mouse coordinates, which are passed to an SVG `<circle>` element’s `cx` and `cy` attributes. The `onMouseMove` event handler on the `<svg>` element triggers the state update, while ReactDOM renders the component. No D3 APIs are used; the example relies purely on React’s declarative rendering with SVG.

Yyinhao0424

Mouse Follower

This is a React application that renders a single smiley face as an SVG circle, which follows the mouse cursor across the screen. The component tracks pointer movement through React's `useState` and `useCallback` hooks, updating the circle's center coordinates with each mouse event. The SVG is rendered with React, while the page loads React and D3 v5 from CDN links in the HTML. The interactive behavior is driven entirely by React's event handling, not by D3's own mouse utilities.

JJames Huang

Mouse Follower

A smiling face emoji, rendered as a single SVG circle, follows the mouse cursor across a 960 by 500 pixel canvas. The React component uses the `useState` hook to track the mouse position, which is updated on every `onMouseMove` event on the SVG element. React 16.9 handles the state-driven re-rendering, while D3 v5 is loaded but not directly used in this example. The circle’s center coordinates are bound to the current mouse position within the SVG coordinate system.

Nnqu9DL

Mouse follower

A smiley face drawn with SVG circles follows the cursor inside a 960 by 500 canvas. The React component tracks mouse movements via an `onMouseMove` handler, updating state to reposition a single circle. While the static markup comments include a complete face, the active code renders only the follower circle using React's `useState` and `useCallback`. The example demonstrates combining React's declarative updates with D3's SVG scene graph for interactive visualizations.

Vvijaytayal

Mouse follower

A smiley face rendered as an SVG circle follows the mouse cursor across the browser viewport. The React application tracks pointer movement via an `onMouseMove` handler, updating the circle's `cx` and `cy` coordinates with the cursor's client position. The visualization uses React's `useState` and `useCallback` hooks to manage state, and D3.js is loaded for potential data manipulation, though the current implementation relies solely on SVG primitives within a React component.

Nnpinta

Mouse Follower

A smiley face follows the mouse cursor across an SVG canvas, its position updating in real time with every pointer movement. The example combines React 16.9's `useState` and `useCallback` hooks to manage the circle's `cx` and `cy` attributes, while D3 v5 supplies the `arc` import. Rendering is handled through ReactDOM's `render` method, which places an interactive `<svg>` with an `onMouseMove` listener into the page root.

Ddleoenri

Mouse Follower

A smiley face built with React follows the user’s cursor across a full-screen SVG canvas. The component uses React’s `useState` hook to track mouse coordinates, updated via the SVG `onMouseMove` event, and renders a circle element centered on those coordinates. The visualization demonstrates unidirectional data flow with a blank viewport and no additional data source.

JJulia