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 = 15 }) => {
const ref = useRef<HTMLCanvasElement | null>(null);
useEffect(() => {
const c=ref.current;if(!c)return;const ctx=c.getContext("2d",{alpha:true});if(!ctx)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=ctx.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;}ctx.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={ref} className="pointer-events-none absolute inset-0" style={{ imageRendering:"pixelated" }}/>;
};
export default function Component() {
return (
<div className="fixed inset-0 -z-10 bg-neutral-950">
<div className="absolute inset-0 bg-[radial-gradient(circle_600px_at_50%_180px,rgba(168,85,247,0.33),transparent_70%)]" />
<div className="pointer-events-none absolute inset-0 bg-[linear-gradient(to_right,#64748b29_1px,transparent_1px),linear-gradient(to_bottom,#64748b29_1px,transparent_1px)] bg-[size:22px_24px]" />
<Noise patternAlpha={16}/>
</div>
);
}