Paper2Code / components /shared /effects /subtle-ascii-animation.tsx
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"use client";
import React, { useEffect, useRef, useMemo } from "react";
import { setIntervalOnVisible } from "@/utils/set-timeout-on-visible";
export default function SubtleAsciiAnimation({
className = "",
}: {
className?: string;
}) {
const containerRef = useRef<HTMLDivElement>(null);
// Simple ASCII pattern for subtle animation
const asciiFrames = useMemo(() => [
"β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘",
"β–’β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘",
"β–’β–’β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘",
"β–‘β–’β–’β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘",
"β–‘β–‘β–’β–’β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘",
"β–‘β–‘β–‘β–’β–’β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘",
"β–‘β–‘β–‘β–‘β–’β–’β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘",
"β–‘β–‘β–‘β–‘β–‘β–’β–’β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘",
"β–‘β–‘β–‘β–‘β–‘β–‘β–’β–’β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘",
"β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–’β–’β–‘β–‘β–‘β–‘β–‘β–‘β–‘",
"β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–’β–’β–‘β–‘β–‘β–‘β–‘β–‘",
"β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–’β–’β–‘β–‘β–‘β–‘β–‘",
"β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–’β–’β–‘β–‘β–‘β–‘",
"β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–’β–’β–‘β–‘β–‘",
"β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–’β–’β–‘β–‘",
"β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–’β–’β–‘",
"β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–’β–’",
"β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–’",
], []);
useEffect(() => {
let frameIndex = 0;
const animateAscii = () => {
if (containerRef.current) {
containerRef.current.innerHTML = asciiFrames[frameIndex];
frameIndex = (frameIndex + 1) % asciiFrames.length;
}
};
// Initialize first frame
animateAscii();
// Start animation when visible
const cleanup = setIntervalOnVisible({
element: containerRef.current,
callback: animateAscii,
interval: 150, // Slightly slower for subtlety
});
return () => {
cleanup?.();
};
}, [asciiFrames]);
return (
<div
ref={containerRef}
className={`font-mono text-white/20 whitespace-pre select-none ${className}`}
style={{
fontSize: "10px",
lineHeight: "1",
letterSpacing: "0.05em",
}}
/>
);
}