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import { useEffect, useRef } from 'react'; class Pixel { width: number; height: number; ctx: CanvasRenderingContext2D; x: number; y: number; color: string; speed: number; size: number; sizeStep: number; minSize: number; maxSizeInteger: number; maxSize: number; delay: number; counter: number; counterStep: number; isIdle: boolean; isReverse: boolean; isShimmer: boolean; constructor( canvas: HTMLCanvasElement, context: CanvasRenderingContext2D, x: number, y: number, color: string, speed: number, delay: number, ) { this.width = canvas.width; this.height = canvas.height; this.ctx = context; this.x = x; this.y = y; this.color = color; this.speed = this.getRandomValue(0.1, 0.9) * speed; this.size = 0; this.sizeStep = Math.random() * 0.4; this.minSize = 0.5; this.maxSizeInteger = 2; this.maxSize = this.getRandomValue(this.minSize, this.maxSizeInteger); this.delay = delay; this.counter = 0; this.counterStep = Math.random() * 4 + (this.width + this.height) * 0.01; this.isIdle = false; this.isReverse = false; this.isShimmer = false; } getRandomValue(min: number, max: number) { return Math.random() * (max - min) + min; } draw() { const centerOffset = this.maxSizeInteger * 0.5 - this.size * 0.5; this.ctx.fillStyle = this.color; this.ctx.fillRect( this.x + centerOffset, this.y + centerOffset, this.size, this.size, ); } appear() { this.isIdle = false; if (this.counter <= this.delay) { this.counter += this.counterStep; return; } if (this.size >= this.maxSize) { this.isShimmer = true; } if (this.isShimmer) { this.shimmer(); } else { this.size += this.sizeStep; } this.draw(); } shimmer() { if (this.size >= this.maxSize) { this.isReverse = true; } else if (this.size <= this.minSize) { this.isReverse = false; } if (this.isReverse) { this.size -= this.speed; } else { this.size += this.speed; } } } function getEffectiveSpeed(value: number, reducedMotion: boolean) { const min = 0; const max = 100; const throttle = 0.001; if (value <= min || reducedMotion) { return min; } else if (value >= max) { return max * throttle; } else { return value * throttle; } } interface PixelBackgroundProps { gap?: number; speed?: number; colors?: string; opacity?: number; direction?: | 'center' | 'top' | 'bottom' | 'left' | 'right' | 'top-left' | 'top-right' | 'bottom-left' | 'bottom-right'; className?: string; canvasClassName?: string; children?: React.ReactNode; } export default function PixelBackground({ gap = 6, speed = 80, colors = '#fecdd3,#fda4af,#e11d48', opacity = 1, direction = 'center', className = '', canvasClassName = '', children, }: PixelBackgroundProps) { const containerRef = useRef(null); const canvasRef = useRef(null); const pixelsRef = useRef([]); const animationRef = useRef(null); const timePreviousRef = useRef(0); useEffect(() => { const reducedMotionValue = window.matchMedia( '(prefers-reduced-motion: reduce)', ).matches; const getOriginPoint = (width: number, height: number) => { switch (direction) { case 'top': return { x: width / 2, y: 0 }; case 'bottom': return { x: width / 2, y: height }; case 'left': return { x: 0, y: height / 2 }; case 'right': return { x: width, y: height / 2 }; case 'top-left': return { x: 0, y: 0 }; case 'top-right': return { x: width, y: 0 }; case 'bottom-left': return { x: 0, y: height }; case 'bottom-right': return { x: width, y: height }; case 'center': default: return { x: width / 2, y: height / 2 }; } }; const initPixels = () => { if (!containerRef.current || !canvasRef.current) return; const rect = containerRef.current.getBoundingClientRect(); const width = Math.floor(rect.width); const height = Math.floor(rect.height); const ctx = canvasRef.current.getContext('2d'); canvasRef.current.width = width; canvasRef.current.height = height; canvasRef.current.style.width = `${width}px`; canvasRef.current.style.height = `${height}px`; const origin = getOriginPoint(width, height); const colorsArray = colors.split(','); const pxs: Pixel[] = []; for (let x = 0; x < width; x += parseInt(gap.toString(), 10)) { for (let y = 0; y < height; y += parseInt(gap.toString(), 10)) { const color = colorsArray[Math.floor(Math.random() * colorsArray.length)]; const dx = x - origin.x; const dy = y - origin.y; const distance = Math.sqrt(dx * dx + dy * dy); const delay = reducedMotionValue ? 0 : distance; if (!ctx) return; pxs.push( new Pixel( canvasRef.current, ctx, x, y, color, getEffectiveSpeed(speed, reducedMotionValue), delay, ), ); } } pixelsRef.current = pxs; }; const doAnimate = (fnName: 'appear') => { animationRef.current = requestAnimationFrame(() => doAnimate(fnName)); const timeNow = performance.now(); if (timePreviousRef.current === 0) timePreviousRef.current = timeNow; const timePassed = timeNow - timePreviousRef.current; const timeInterval = 1000 / 60; if (timePassed < timeInterval) return; timePreviousRef.current = timeNow - (timePassed % timeInterval); const ctx = canvasRef.current?.getContext('2d'); if (!ctx || !canvasRef.current) return; ctx.clearRect(0, 0, canvasRef.current.width, canvasRef.current.height); let allIdle = true; for (let i = 0; i < pixelsRef.current.length; i++) { const pixel = pixelsRef.current[i]; pixel[fnName](); if (!pixel.isIdle) { allIdle = false; } } if (allIdle && animationRef.current !== null) { cancelAnimationFrame(animationRef.current); } }; const handleAnimation = (name: 'appear') => { if (animationRef.current !== null) { cancelAnimationFrame(animationRef.current); } animationRef.current = requestAnimationFrame(() => doAnimate(name)); }; initPixels(); handleAnimation('appear'); return () => { if (animationRef.current !== null) { cancelAnimationFrame(animationRef.current); } }; }, [gap, speed, colors, direction]); return (

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Pixel Background

Installation

Files

components

Styles