Mouse Follower

Mouse Follower

A single black circle follows the mouse cursor across an SVG canvas. The example demonstrates how React manages dynamic state alongside D3’s rendering environment. Using React’s `useState` and `useCallback` hooks, the component tracks mouse coordinates from the SVG’s `onMouseMove` event and updates the circle’s `cx` and `cy` attributes. The circle is rendered via React’s JSX, while D3 v5 is loaded but not directly used for interaction; the visualization relies entirely on React’s state updates to redraw the SVG element in real time.

Rrstrauss127

Mouse Follower

A single black circle follows the mouse cursor across a blank SVG canvas. The circle’s position updates in response to mouse movement via a React state hook (`useState`) and an `onMouseMove` event handler. The example uses React 16.9 for component rendering and event handling, with the SVG element created directly in JSX. No external data or D3 functions are used; only React’s state management drives the dynamic repositioning.

SSoujanya C. Aryal

Mouse Follower

A black circle follows the mouse as it moves across a blank SVG canvas. The example demonstrates React state management with the `useState` and `useCallback` hooks to track cursor coordinates. Each mouse movement updates the circle’s `cx` and `cy` attributes, while d3.v5 is loaded but not used in the visible logic. The SVG rendering is handled by React, with the circle’s position initialized at the canvas center.

OOlowogoke Seun

Mouse follower

A single black circle follows the mouse cursor across an SVG canvas. The circle’s position updates on every `mousemove` event, driven by React state. The application uses React’s `useState` and `useCallback` hooks to track the cursor’s coordinates and re-render the circle accordingly. The example is rendered with D3.js v6 for SVG creation, while React handles the interactive state, with no external data source.

Sschfflr

Mouse Follower

The example shows a black circle that follows the mouse cursor across a blank SVG canvas, updating its position in real time as the pointer moves. The code uses React hooks, specifically `useState` and `useCallback`, to track the mouse coordinates and re-render the circle’s `cx` and `cy` attributes on every move event. It renders a 960×500 SVG element with a single circle of radius 30, and the mouse position is captured via the `onMouseMove` handler.

AAmine HAMOU

Mouse Follower

A black circle follows the mouse pointer across a blank SVG canvas. The example demonstrates interactive state management in React, where mouse coordinates update the circle’s position in real time. It uses React’s `useState` and `useCallback` hooks to track and handle mouse movement events, while d3.v5 provides the SVG rendering utilities. The circle’s center is set directly from the `clientX` and `clientY` properties of the browser’s mouse event, with no additional data or animation logic.

AALI Akbar SABZI

Mouse Follower

This example shows a single circle that follows the mouse cursor across an SVG canvas. Built with React and D3 v5, it uses React’s `useState` hook to track the cursor’s clientX and clientY coordinates on every `mousemove` event, then re-renders the circle’s `cx` and `cy` attributes to match. The `useCallback` hook memoizes the event handler, and the initial mouse position is set to the canvas center. The rendering uses ReactDOM to mount the SVG, with no external data source.

CChristopher Cleland

Mouse Follower

A single dark circle follows the mouse cursor across an SVG canvas in a React-based visualization. The circle’s position updates live via React’s `useState` hook, driven by the SVG `onMouseMove` event, which captures the cursor’s client coordinates. Rendering uses plain SVG elements, with D3 v5 loaded but not actively used in the logic. The example demonstrates reactive state-driven updates in React for interactive graphics, with the circle centered on the pointer’s exact location.

AAnmol Gupta