"use client"
import * as React from "react"
import { useEffect, useMemo, useRef, useState } from "react"
import { cn } from "@/lib/utils"
export type Frame = number[][]
type MatrixMode = "default" | "vu"
interface CellPosition {
x: number
y: number
}
interface MatrixProps extends React.HTMLAttributes<HTMLDivElement> {
rows: number
cols: number
pattern?: Frame
frames?: Frame[]
fps?: number
autoplay?: boolean
loop?: boolean
size?: number
gap?: number
palette?: {
on: string
off: string
}
brightness?: number
ariaLabel?: string
onFrame?: (index: number) => void
mode?: MatrixMode
levels?: number[]
}
function clamp(value: number): number {
return Math.max(0, Math.min(1, value))
}
function ensureFrameSize(frame: Frame, rows: number, cols: number): Frame {
const result: Frame = []
for (let r = 0; r < rows; r++) {
const row = frame[r] || []
result.push([])
for (let c = 0; c < cols; c++) {
result[r][c] = row[c] ?? 0
}
}
return result
}
function useAnimation(
frames: Frame[] | undefined,
options: {
fps: number
autoplay: boolean
loop: boolean
onFrame?: (index: number) => void
}
): { frameIndex: number; isPlaying: boolean } {
const [frameIndex, setFrameIndex] = useState(0)
const [isPlaying, setIsPlaying] = useState(options.autoplay)
const frameIdRef = useRef<number | undefined>(undefined)
const lastTimeRef = useRef<number>(0)
const accumulatorRef = useRef<number>(0)
useEffect(() => {
if (!frames || frames.length === 0 || !isPlaying) {
return
}
const frameInterval = 1000 / options.fps
const animate = (currentTime: number) => {
if (lastTimeRef.current === 0) {
lastTimeRef.current = currentTime
}
const deltaTime = currentTime - lastTimeRef.current
lastTimeRef.current = currentTime
accumulatorRef.current += deltaTime
if (accumulatorRef.current >= frameInterval) {
accumulatorRef.current -= frameInterval
setFrameIndex((prev) => {
const next = prev + 1
if (next >= frames.length) {
if (options.loop) {
options.onFrame?.(0)
return 0
} else {
setIsPlaying(false)
return prev
}
}
options.onFrame?.(next)
return next
})
}
frameIdRef.current = requestAnimationFrame(animate)
}
frameIdRef.current = requestAnimationFrame(animate)
return () => {
if (frameIdRef.current) {
cancelAnimationFrame(frameIdRef.current)
}
}
}, [frames, isPlaying, options.fps, options.loop, options.onFrame])
useEffect(() => {
setFrameIndex(0)
setIsPlaying(options.autoplay)
lastTimeRef.current = 0
accumulatorRef.current = 0
}, [frames, options.autoplay])
return { frameIndex, isPlaying }
}
function emptyFrame(rows: number, cols: number): Frame {
return Array.from({ length: rows }, () => Array(cols).fill(0))
}
function setPixel(frame: Frame, row: number, col: number, value: number): void {
if (row >= 0 && row < frame.length && col >= 0 && col < frame[0].length) {
frame[row][col] = value
}
}
export const digits: Frame[] = [
[
[0, 1, 1, 1, 0],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[0, 1, 1, 1, 0],
],
[
[0, 0, 1, 0, 0],
[0, 1, 1, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 1, 0, 0],
[0, 1, 1, 1, 0],
],
[
[0, 1, 1, 1, 0],
[1, 0, 0, 0, 1],
[0, 0, 0, 0, 1],
[0, 0, 0, 1, 0],
[0, 0, 1, 0, 0],
[0, 1, 0, 0, 0],
[1, 1, 1, 1, 1],
],
[
[0, 1, 1, 1, 0],
[1, 0, 0, 0, 1],
[0, 0, 0, 0, 1],
[0, 0, 1, 1, 0],
[0, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[0, 1, 1, 1, 0],
],
[
[0, 0, 0, 1, 0],
[0, 0, 1, 1, 0],
[0, 1, 0, 1, 0],
[1, 0, 0, 1, 0],
[1, 1, 1, 1, 1],
[0, 0, 0, 1, 0],
[0, 0, 0, 1, 0],
],
[
[1, 1, 1, 1, 1],
[1, 0, 0, 0, 0],
[1, 1, 1, 1, 0],
[0, 0, 0, 0, 1],
[0, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[0, 1, 1, 1, 0],
],
[
[0, 1, 1, 1, 0],
[1, 0, 0, 0, 0],
[1, 0, 0, 0, 0],
[1, 1, 1, 1, 0],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[0, 1, 1, 1, 0],
],
[
[1, 1, 1, 1, 1],
[0, 0, 0, 0, 1],
[0, 0, 0, 1, 0],
[0, 0, 1, 0, 0],
[0, 1, 0, 0, 0],
[0, 1, 0, 0, 0],
[0, 1, 0, 0, 0],
],
[
[0, 1, 1, 1, 0],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[0, 1, 1, 1, 0],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[0, 1, 1, 1, 0],
],
[
[0, 1, 1, 1, 0],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[0, 1, 1, 1, 1],
[0, 0, 0, 0, 1],
[0, 0, 0, 0, 1],
[0, 1, 1, 1, 0],
],
]
export const chevronLeft: Frame = [
[0, 0, 0, 1, 0],
[0, 0, 1, 0, 0],
[0, 1, 0, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 0, 1, 0],
]
export const chevronRight: Frame = [
[0, 1, 0, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 0, 1, 0],
[0, 0, 1, 0, 0],
[0, 1, 0, 0, 0],
]
export const loader: Frame[] = (() => {
const frames: Frame[] = []
const size = 7
const center = 3
const radius = 2.5
for (let frame = 0; frame < 12; frame++) {
const f = emptyFrame(size, size)
for (let i = 0; i < 8; i++) {
const angle = (frame / 12) * Math.PI * 2 + (i / 8) * Math.PI * 2
const x = Math.round(center + Math.cos(angle) * radius)
const y = Math.round(center + Math.sin(angle) * radius)
const brightness = 1 - i / 10
setPixel(f, y, x, Math.max(0.2, brightness))
}
frames.push(f)
}
return frames
})()
export const pulse: Frame[] = (() => {
const frames: Frame[] = []
const size = 7
const center = 3
for (let frame = 0; frame < 16; frame++) {
const f = emptyFrame(size, size)
const phase = (frame / 16) * Math.PI * 2
const intensity = (Math.sin(phase) + 1) / 2
setPixel(f, center, center, 1)
const radius = Math.floor((1 - intensity) * 3) + 1
for (let dy = -radius; dy <= radius; dy++) {
for (let dx = -radius; dx <= radius; dx++) {
const dist = Math.sqrt(dx * dx + dy * dy)
if (Math.abs(dist - radius) < 0.7) {
setPixel(f, center + dy, center + dx, intensity * 0.6)
}
}
}
frames.push(f)
}
return frames
})()
export function vu(columns: number, levels: number[]): Frame {
const rows = 7
const frame = emptyFrame(rows, columns)
for (let col = 0; col < Math.min(columns, levels.length); col++) {
const level = Math.max(0, Math.min(1, levels[col]))
const height = Math.floor(level * rows)
for (let row = 0; row < rows; row++) {
const rowFromBottom = rows - 1 - row
if (rowFromBottom < height) {
let brightness = 1
if (row < rows * 0.3) {
brightness = 1
} else if (row < rows * 0.6) {
brightness = 0.8
} else {
brightness = 0.6
}
frame[row][col] = brightness
}
}
}
return frame
}
export const wave: Frame[] = (() => {
const frames: Frame[] = []
const rows = 7
const cols = 7
for (let frame = 0; frame < 24; frame++) {
const f = emptyFrame(rows, cols)
const phase = (frame / 24) * Math.PI * 2
for (let col = 0; col < cols; col++) {
const colPhase = (col / cols) * Math.PI * 2
const height = Math.sin(phase + colPhase) * 2.5 + 3.5
const row = Math.floor(height)
if (row >= 0 && row < rows) {
setPixel(f, row, col, 1)
const frac = height - row
if (row > 0) setPixel(f, row - 1, col, 1 - frac)
if (row < rows - 1) setPixel(f, row + 1, col, frac)
}
}
frames.push(f)
}
return frames
})()
export const snake: Frame[] = (() => {
const frames: Frame[] = []
const rows = 7
const cols = 7
const path: Array<[number, number]> = []
let x = 0
let y = 0
let dx = 1
let dy = 0
const visited = new Set<string>()
while (path.length < rows * cols) {
path.push([y, x])
visited.add(`${y},${x}`)
const nextX = x + dx
const nextY = y + dy
if (
nextX >= 0 &&
nextX < cols &&
nextY >= 0 &&
nextY < rows &&
!visited.has(`${nextY},${nextX}`)
) {
x = nextX
y = nextY
} else {
const newDx = -dy
const newDy = dx
dx = newDx
dy = newDy
const nextX = x + dx
const nextY = y + dy
if (
nextX >= 0 &&
nextX < cols &&
nextY >= 0 &&
nextY < rows &&
!visited.has(`${nextY},${nextX}`)
) {
x = nextX
y = nextY
} else {
break
}
}
}
const snakeLength = 5
for (let frame = 0; frame < path.length; frame++) {
const f = emptyFrame(rows, cols)
for (let i = 0; i < snakeLength; i++) {
const idx = frame - i
if (idx >= 0 && idx < path.length) {
const [y, x] = path[idx]
const brightness = 1 - i / snakeLength
setPixel(f, y, x, brightness)
}
}
frames.push(f)
}
return frames
})()
export const Matrix = React.forwardRef<HTMLDivElement, MatrixProps>(
(
{
rows,
cols,
pattern,
frames,
fps = 12,
autoplay = true,
loop = true,
size = 10,
gap = 2,
palette = {
on: "currentColor",
off: "var(--muted-foreground)",
},
brightness = 1,
ariaLabel,
onFrame,
mode = "default",
levels,
className,
...props
},
ref
) => {
const { frameIndex } = useAnimation(frames, {
fps,
autoplay: autoplay && !pattern,
loop,
onFrame,
})
const currentFrame = useMemo(() => {
if (mode === "vu" && levels && levels.length > 0) {
return ensureFrameSize(vu(cols, levels), rows, cols)
}
if (pattern) {
return ensureFrameSize(pattern, rows, cols)
}
if (frames && frames.length > 0) {
return ensureFrameSize(frames[frameIndex] || frames[0], rows, cols)
}
return ensureFrameSize([], rows, cols)
}, [pattern, frames, frameIndex, rows, cols, mode, levels])
const cellPositions = useMemo(() => {
const positions: CellPosition[][] = []
for (let row = 0; row < rows; row++) {
positions[row] = []
for (let col = 0; col < cols; col++) {
positions[row][col] = {
x: col * (size + gap),
y: row * (size + gap),
}
}
}
return positions
}, [rows, cols, size, gap])
const svgDimensions = useMemo(() => {
return {
width: cols * (size + gap) - gap,
height: rows * (size + gap) - gap,
}
}, [rows, cols, size, gap])
const isAnimating = !pattern && frames && frames.length > 0
return (
<div
ref={ref}
role="img"
aria-label={ariaLabel ?? "matrix display"}
aria-live={isAnimating ? "polite" : undefined}
className={cn("relative inline-block", className)}
style={
{
"--matrix-on": palette.on,
"--matrix-off": palette.off,
"--matrix-gap": `${gap}px`,
"--matrix-size": `${size}px`,
} as React.CSSProperties
}
{...props}
>
<svg
width={svgDimensions.width}
height={svgDimensions.height}
viewBox={`0 0 ${svgDimensions.width} ${svgDimensions.height}`}
xmlns="http://www.w3.org/2000/svg"
className="block"
style={{ overflow: "visible" }}
>
<defs>
<radialGradient id="matrix-pixel-on" cx="50%" cy="50%" r="50%">
<stop offset="0%" stopColor="var(--matrix-on)" stopOpacity="1" />
<stop
offset="70%"
stopColor="var(--matrix-on)"
stopOpacity="0.85"
/>
<stop
offset="100%"
stopColor="var(--matrix-on)"
stopOpacity="0.6"
/>
</radialGradient>
<radialGradient id="matrix-pixel-off" cx="50%" cy="50%" r="50%">
<stop
offset="0%"
stopColor="var(--muted-foreground)"
stopOpacity="1"
/>
<stop
offset="100%"
stopColor="var(--muted-foreground)"
stopOpacity="0.7"
/>
</radialGradient>
<filter
id="matrix-glow"
x="-50%"
y="-50%"
width="200%"
height="200%"
>
<feGaussianBlur stdDeviation="2" result="blur" />
<feComposite in="SourceGraphic" in2="blur" operator="over" />
</filter>
</defs>
<style>
{`
.matrix-pixel {
transition: opacity 300ms ease-out, transform 150ms ease-out;
transform-origin: center;
transform-box: fill-box;
}
.matrix-pixel-active {
filter: url(#matrix-glow);
}
`}
</style>
{currentFrame.map((row, rowIndex) =>
row.map((value, colIndex) => {
const pos = cellPositions[rowIndex]?.[colIndex]
if (!pos) return null
const opacity = clamp(brightness * value)
const isActive = opacity > 0.5
const isOn = opacity > 0.05
const fill = isOn
? "url(#matrix-pixel-on)"
: "url(#matrix-pixel-off)"
const scale = isActive ? 1.1 : 1
const radius = (size / 2) * 0.9
return (
<circle
key={`${rowIndex}-${colIndex}`}
className={cn(
"matrix-pixel",
isActive && "matrix-pixel-active",
!isOn && "opacity-20 dark:opacity-[0.1]"
)}
cx={pos.x + size / 2}
cy={pos.y + size / 2}
r={radius}
fill={fill}
opacity={isOn ? opacity : 0.1}
style={{
transform: `scale(${scale})`,
}}
/>
)
})
)}
</svg>
</div>
)
}
)
Matrix.displayName = "Matrix"