Square Fill: a loading animation

A square grid of dots that fills ring by ring, then empties. A React loader for AI agent loading states. Install with the shadcn CLI.

Installation

Install with the shadcn CLI, or copy the component file. It only needs React.

npx shadcn@latest add https://oxyn.space/r/square-fill.json

Updates live with the parameters you set.

import { SquareFill } from "@/components/square-fill";

export function Thinking() {
  return (
    <SquareFill />
  );
}

Prop	Type	Default	Description
dotShape	"round"\|"square"	"round"	Shape of each dot.
dotSize	number	2.5	Resting dot size in px.
scale	number	1.5	How many times larger a dot grows at the peak of the animation.
density	number	11	Dots across the width of the sheet.
size	number	160	Width and height of the orb in px.
duration	number	1.2	Seconds for the ring to cross the sheet once. It crosses twice per loop: once to fill, once to empty.
gap	number	0.3	Seconds to rest between loops.
ringWidth	number	0.35	Thickness of the ring where dots are growing or shrinking, as a fraction of the sheet radius.
direction	"out"\|"in"	"out"	"out" fills and empties from the center to the edge; "in" from the edge to the center.
minOpacity	number	0.25	Opacity of resting dots. Dots at full size are always fully opaque.
color	string	"#e4e4e7"	Dot color.
paused	boolean	false	Coast to a stop on the current frame without unmounting. Turning it off eases back up to speed.
label	string	"Thinking"	Accessible name; the wrapper is role="status".
className / style	—	—	Spread onto the wrapper div, along with any other div props.

Square Fill is one of the animations in Dot Square. Use the group when the agent's state changes, and it morphs between them.