Components
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Here is Background Snippets Noise effect component
@reapollo
npx shadcn@latest add https://21st.dev/r/larsen66/background-snippets-noise-effect11import React, { useRef, useEffect } from "react";
const Noise: React.FC<{ patternRefreshInterval?: number; patternAlpha?: number }> = ({ patternRefreshInterval = 2, patternAlpha = 12 }) => {
const r = useRef<HTMLCanvasElement | null>(null);
useEffect(() => {
const c = r.current; if (!c) return;
const x = c.getContext("2d", { alpha: true }); if (!x) return;
let f=0,id=0,S=1024;
const resize=()=>{c.width=S;c.height=S;c.style.width="100vw";c.style.height="100vh";};
const draw=()=>{const img=x.createImageData(S,S);const d=img.data;for(let i=0;i<d.length;i+=4){const v=Math.random()*255;d[i]=v;d[i+1]=v;d[i+2]=v;d[i+3]=patternAlpha;}x.putImageData(img,0,0);};
const loop=()=>{if(f%patternRefreshInterval===0)draw();f++;id=requestAnimationFrame(loop);};
addEventListener("resize",resize);resize();loop();return()=>{removeEventListener("resize",resize);cancelAnimationFrame(id);};
},[patternRefreshInterval,patternAlpha]);
return <canvas ref={r} className="pointer-events-none absolute inset-0" style={{ imageRendering: "pixelated" }}/>;
};
export default function Component() {
return (
<div className="fixed inset-0 -z-10 bg-white">
{/* subtle grid */}
<div className="absolute inset-0 z-0 bg-[linear-gradient(to_right,#cbd5e133_1px,transparent_1px),linear-gradient(to_bottom,#cbd5e133_1px,transparent_1px)] bg-[size:24px_24px]" />
{/* blur glow */}
<div className="absolute left-1/3 top-1/4 z-10 h-[520px] w-[520px] -translate-x-1/2 -translate-y-1/2 rounded-full bg-emerald-400 opacity-25 blur-[140px]" />
<Noise patternAlpha={18} />
</div>
);
}