hover-ui
Install

Comet

A bright head whose tail stretches out as you speed up. It swells inside a faint coma over controls.

npx shadcn@latest add https://hoverui.fun/r/comet.json

Adds components/cursors/comet.tsx. The CLI also installs the useCursor hook it runs on, once, into your hooks folder. The files are yours from there.

Move through the preview, then hover the controls and press.

All cursors
Kind
Space
Hook
useCursor
Dependencies
None
License
MIT

How it behaves

A bright head with a tail that stretches out behind you as you speed up; over a control the head swells inside a faint coma.

Usage

Any element
import { CometCursor } from "@/components/cursors/comet";

export function Section() {
  return (
    <section>
      <CometCursor />
      {/* this section now wears Comet */}
    </section>
  );
}

Put it inside <body> in your root layout to wear it on every page. Nested cursors take over inside their own element.

Props

className
Colors the cursor through currentColor, e.g. text-pink-500. To read on any background, pass text-white mix-blend-difference, as this site does.
Hover targets
a, button, input, select, textarea, label, [role=button], [data-cursor-label]

Source

comet.tsx
"use client";

import { useRef } from "react";
import { cursorRoot, useCursor } from "@/hooks/use-cursor";

const TAIL = 180;

/** A bright head with a tail that stretches out behind you as you speed up; over a control the head swells inside a faint coma. */
export function CometCursor({ className = "" }: { className?: string }) {
  const s = useRef({ x: 0, y: 0, len: 0, angle: 0, size: 1, coma: 0 });
  const ref = useCursor((p, el) => {
    const st = s.current;
    const vx = p.dt ? (p.x - st.x) / p.dt : 0;
    const vy = p.dt ? (p.y - st.y) / p.dt : 0;
    [st.x, st.y] = [p.x, p.y];
    const speed = Math.hypot(vx, vy);
    if (speed > 30) st.angle = Math.atan2(vy, vx);
    st.len += ((p.reduced ? 0 : Math.min(speed * 0.12, TAIL)) - st.len) * p.ease(10);
    st.size += ((p.down ? 0.7 : p.hover ? 1.6 : 1) - st.size) * p.ease(16);
    st.coma += ((p.hover ? 1 : 0) - st.coma) * p.ease(10);
    const [tail, coma, head] = el.children as HTMLCollectionOf<HTMLElement>;
    tail.style.transform = `translate(${p.x}px, ${p.y}px) rotate(${st.angle + Math.PI}rad) scaleX(${st.len / TAIL})`;
    coma.style.transform = `translate(${p.x}px, ${p.y}px) scale(${st.coma})`;
    head.style.transform = `translate(${p.x}px, ${p.y}px) scale(${st.size})`;
  });

  return (
    <div ref={ref} aria-hidden className={`${cursorRoot} ${className}`}>
      <div className="absolute top-[-3px] left-0 h-1.5 origin-left rounded-full bg-linear-to-r from-current to-transparent" style={{ width: TAIL }} />
      <div className="absolute size-9 -translate-1/2 rounded-full bg-current opacity-20" />
      <div className="absolute size-2.5 -translate-1/2 rounded-full bg-current" />
    </div>
  );
}

It runs on the useCursor hook, which has its own source and API.

More space cursors

All space cursors Or build your own in the Mixer

Made a cursor of your own? Contributed cursors carry their maker's name on their page.

Contribute a cursor