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Magnetic Hover

Magnetic Hover is a React and Tailwind CSS component from Motion Primitives, licensed MIT. Copy it and paste it into your project.

Motion Primitives MIT other

What it is

Magnetic Hover is a React and Tailwind CSS component from Motion Primitives, licensed MIT. Copy it and paste it into your project.

How to use it

Open it in the catalogue, press copy, and paste it into your project. The prompt you copy carries the code and the rules that tell your agent to reproduce it without changing anything.

Open in the catalogue

Five free copies a month. No card.

Needs

npm i motion

Licence

This component comes from Motion Primitives and is redistributed under the MIT licence, which permits commercial use. The copyright notice travels with the code.

Magnetic Hover

components/core/magnetic.tsx
'use client';

import React, { useState, useEffect, useRef } from 'react';
import {
  motion,
  useMotionValue,
  useSpring,
  type SpringOptions,
} from 'motion/react';

const SPRING_CONFIG = { stiffness: 26.7, damping: 4.1, mass: 0.2 };

export type MagneticProps = {
  children: React.ReactNode;
  intensity?: number;
  range?: number;
  actionArea?: 'self' | 'parent' | 'global';
  springOptions?: SpringOptions;
};

export function Magnetic({
  children,
  intensity = 0.6,
  range = 100,
  actionArea = 'self',
  springOptions = SPRING_CONFIG,
}: MagneticProps) {
  const [isHovered, setIsHovered] = useState(false);
  const ref = useRef<HTMLDivElement>(null);

  const x = useMotionValue(0);
  const y = useMotionValue(0);

  const springX = useSpring(x, springOptions);
  const springY = useSpring(y, springOptions);

  useEffect(() => {
    const calculateDistance = (e: MouseEvent) => {
      if (ref.current) {
        const rect = ref.current.getBoundingClientRect();
        const centerX = rect.left + rect.width / 2;
        const centerY = rect.top + rect.height / 2;
        const distanceX = e.clientX - centerX;
        const distanceY = e.clientY - centerY;

        const absoluteDistance = Math.sqrt(distanceX ** 2 + distanceY ** 2);

        if (isHovered && absoluteDistance <= range) {
          const scale = 1 - absoluteDistance / range;
          x.set(distanceX * intensity * scale);
          y.set(distanceY * intensity * scale);
        } else {
          x.set(0);
          y.set(0);
        }
      }
    };

    document.addEventListener('mousemove', calculateDistance);

    return () => {
      document.removeEventListener('mousemove', calculateDistance);
    };
  }, [ref, isHovered, intensity, range]);

  useEffect(() => {
    if (actionArea === 'parent' && ref.current?.parentElement) {
      const parent = ref.current.parentElement;

      const handleParentEnter = () => setIsHovered(true);
      const handleParentLeave = () => setIsHovered(false);

      parent.addEventListener('mouseenter', handleParentEnter);
      parent.addEventListener('mouseleave', handleParentLeave);

      return () => {
        parent.removeEventListener('mouseenter', handleParentEnter);
        parent.removeEventListener('mouseleave', handleParentLeave);
      };
    } else if (actionArea === 'global') {
      setIsHovered(true);
    }
  }, [actionArea]);

  const handleMouseEnter = () => {
    if (actionArea === 'self') {
      setIsHovered(true);
    }
  };

  const handleMouseLeave = () => {
    if (actionArea === 'self') {
      setIsHovered(false);
      x.set(0);
      y.set(0);
    }
  };

  return (
    <motion.div
      ref={ref}
      onMouseEnter={actionArea === 'self' ? handleMouseEnter : undefined}
      onMouseLeave={actionArea === 'self' ? handleMouseLeave : undefined}
      style={{
        x: springX,
        y: springY,
      }}
    >
      {children}
    </motion.div>
  );
}

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