4f:I[314491,["/_next/static/immutable/chunks/3arlv5bvukoo2.js","/_next/static/immutable/chunks/39v64hmfyo-sr.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/04j_o97cgxn2x.js","/_next/static/immutable/chunks/3upr08c9vtj8w.js","/_next/static/immutable/chunks/1ww0328si-u8x.js","/_next/static/immutable/chunks/11mfl5ymqld9-.js","/_next/static/immutable/chunks/2xxcqy6ppds3l.js","/_next/static/immutable/chunks/3j06ow7w40nxu.js","/_next/static/immutable/chunks/31nn7jwsjvqii.js","/_next/static/immutable/chunks/43_s7jweyypoh.js","/_next/static/immutable/chunks/0p6vao205o1jc.js","/_next/static/immutable/chunks/1_kyvgkyokw92.js","/_next/static/immutable/chunks/1lo-zn37dolb5.js","/_next/static/immutable/chunks/1v8k6yxw1rg0u.js"],"FilesView"] 50:T5488,"use client"; import { useEffect, useRef, useState, useSyncExternalStore, type CSSProperties, type ReactNode } from "react"; // A calm, painterly mesh gradient. One small WebGL1 fragment shader: four or five colour // fields drift on slow loops of their own, the space they live in is bent by two layers of // noise (domain warping) so the edges swirl like wet paint, and a fine film grain sits on top. // The colours lean towards the cursor. No libraries, one full-screen triangle, one draw a frame. export type MeshGradientPreset = "auto" | "aurora" | "dusk" | "lime-ink" | "paper"; export type MeshGradientProps = { /** Four or five hex colours, or a preset name. "auto" is aurora, tuned for the page's light or dark theme. */ colors?: readonly string[] | MeshGradientPreset; /** How fast the colours drift, from 0 (still) to 1. */ speed?: number; /** How much the noise bends and swirls the colour fields, from 0 (soft blobs) to 1. */ warp?: number; /** Film grain strength, from 0 to 0.2. It also hides colour banding. */ grain?: number; /** How much the colours lean towards the cursor (or finger), from 0 to 1. */ cursorInfluence?: number; /** Which tuning the presets use. "auto" follows the page: data-theme, a dark class, or the system setting. */ theme?: "auto" | "light" | "dark"; /** Extra classes for the outer box. Give it a size (it fills it). */ className?: string; /** Content shown over the gradient. It can use var(--mesh-ink) for a text colour that reads on it. */ children?: ReactNode; }; // ---------- palettes, each tuned once for light pages and once for dark ---------- type NamedPreset = Exclude; // Dark tunings keep the base deep, because light text sits on them. A bright colour may still // appear, but only as the "accent" field: a tighter, smaller glow that drifts through the deep // colours instead of washing over them. Light tunings are the mirror. type Tuning = { colors: string[]; accent?: number }; const presets: Record = { // The owner's favourite: deep aurora teal into mint aurora: { light: { colors: ["#e6fbf6", "#99f6e4", "#5eead4", "#0f766e", "#f4fbf8"] }, dark: { colors: ["#021c1a", "#0f766e", "#0a4d47", "#14b8a6", "#99f6e4"], accent: 4 }, }, dusk: { light: { colors: ["#fff1e8", "#f9a8d4", "#fdba74", "#c4b5fd", "#fde4ef"] }, dark: { colors: ["#140f2e", "#5b21b6", "#be185d", "#c2410c", "#1e1b4b"] }, }, // DiMaac's paper, ink and lime. On dark, ink leads and the brand lime is one tight accent // bloom: spread wide, lime mixed into black reads as olive, so it is kept small and bright "lime-ink": { light: { colors: ["#f7f4ee", "#e9e4d8", "#d6fd51", "#f1f7c9", "#c8c1b0"] }, dark: { colors: ["#0d0c0a", "#161512", "#d6fd51", "#1c1a16", "#24221d"], accent: 2 }, }, paper: { light: { colors: ["#faf9f6", "#ebe6dc", "#d8d1c3", "#f3f0e9", "#bfb7a7"] }, dark: { colors: ["#100f0e", "#24211d", "#3d3832", "#161512", "#5b554b"] }, }, }; // ---------- shaders ---------- const vertexShader = ` attribute vec2 position; varying vec2 uv; void main() { uv = position * 0.5 + 0.5; gl_Position = vec4(position, 0.0, 1.0); }`; const fragmentShader = ` precision highp float; varying vec2 uv; uniform vec3 colors[5]; uniform float count; uniform float time; uniform float aspect; uniform float warp; uniform float grain; uniform vec2 pointer; uniform float pull; uniform float seed; uniform float lead; uniform float accent; float random(vec2 point) { return fract(sin(dot(point, vec2(12.9898, 78.233))) * 43758.5453); } // A cleaner hash for the grain, so it reads as film and not as a pattern float speckle(vec2 point) { vec3 p = fract(vec3(point.xyx) * 0.1031); p += dot(p, p.yzx + 33.33); return fract((p.x + p.y) * p.z); } float noise(vec2 point) { vec2 cell = floor(point); vec2 f = fract(point); vec2 blend = f * f * f * (f * (f * 6.0 - 15.0) + 10.0); float a = random(cell); float b = random(cell + vec2(1.0, 0.0)); float c = random(cell + vec2(0.0, 1.0)); float d = random(cell + vec2(1.0, 1.0)); return mix(mix(a, b, blend.x), mix(c, d, blend.x), blend.y); } // A few layers of noise, each smaller and turned, for an organic, non-grid look float fbm(vec2 point) { float total = 0.0; float amount = 0.5; mat2 turn = mat2(0.8, 0.6, -0.6, 0.8); for (int i = 0; i < 4; i++) { total += amount * noise(point); point = turn * point * 2.03 + 3.1; amount *= 0.5; } return total; } void main() { // Measured in shorter-sides, so the fields keep their size on a tall phone as on a wide screen vec2 size = vec2(aspect, 1.0) / min(aspect, 1.0); vec2 point = uv * size; vec2 cursor = pointer * size; // The cursor gently draws the space around it in vec2 toCursor = cursor - point; point += toCursor * exp(-dot(toCursor, toCursor) * 3.0) * pull * 0.3; // Domain warping: noise moves the point, then noise of that moves it again vec2 q = vec2(fbm(point * 1.2 + vec2(0.0, time * 0.05)), fbm(point * 1.2 + vec2(5.2, 1.3) - time * 0.04)); vec2 r = vec2(fbm(point * 1.4 + q * 2.2 + vec2(1.7, 9.2) + time * 0.03), fbm(point * 1.4 + q * 2.2 + vec2(8.3, 2.8) - time * 0.035)); vec2 bent = point + (r - 0.5) * warp * 1.4; // Each colour is a soft field around a centre that drifts on its own slow loop. // Mixing happens in (roughly) linear light so blends glow instead of going muddy. vec3 sum = vec3(0.0); float total = 0.0; for (int i = 0; i < 5; i++) { if (float(i) >= count) break; float f = float(i); vec2 centre = size * vec2( 0.5 + cos(time * (0.21 + f * 0.047) + f * 2.4) * 0.45, 0.5 + sin(time * (0.17 + f * 0.039) + f * 1.7) * 0.42 ); centre += (cursor - centre) * pull * 0.22; vec2 away = bent - centre; // The accent field (if any) is a tighter glow but stronger at its heart, so a bright colour // blooms clearly through the deep base and then falls away fast, instead of flooding bool isAccent = abs(f - accent) < 0.5; float weight = exp(-dot(away, away) * (isAccent ? 9.0 : 4.2)) * (isAccent ? 1.8 : 1.0) + 0.0005; // The first colour (the base) can be given a floor, so it always leads the mix if (i == 0) weight += lead; sum += colors[i] * colors[i] * weight; total += weight; } vec3 color = sqrt(sum / total); // A faint sheen along the folds, like light on a brushstroke color *= 1.0 + (r.x - 0.5) * 0.12 * warp; // Film grain, new every frame, plus a hair of dither so smooth ramps never band float speck = speckle(gl_FragCoord.xy + seed * 17.0) - 0.5; color += speck * (grain + 1.5 / 255.0); gl_FragColor = vec4(color, 1.0); }`; // ---------- small helpers ---------- function hexToRgb(hex: string): [number, number, number] { let value = hex.trim().replace(/^#/, ""); if (value.length === 3) value = value.replace(/./g, (c) => c + c); const n = /^[0-9a-f]{6}$/i.test(value) ? parseInt(value, 16) : 0x808080; return [((n >> 16) & 255) / 255, ((n >> 8) & 255) / 255, (n & 255) / 255]; } // Is the gradient light overall? Then text on it should be ink, otherwise paper function isLight(colors: readonly string[]): boolean { const lightness = colors.map((hex) => { const [r, g, b] = hexToRgb(hex); return 0.2126 * r * r + 0.7152 * g * g + 0.0722 * b * b; }); return lightness.reduce((a, b) => a + b, 0) / lightness.length > 0.3; } function pageIsDark(): boolean { const root = document.documentElement; const picked = root.getAttribute("data-theme"); if (picked === "dark") return true; if (picked === "light") return false; if (root.classList.contains("dark")) return true; if (root.classList.contains("light")) return false; return window.matchMedia("(prefers-color-scheme: dark)").matches; } function watchPageTheme(onChange: () => void): () => void { const observer = new MutationObserver(onChange); observer.observe(document.documentElement, { attributes: true, attributeFilter: ["data-theme", "class"] }); const query = window.matchMedia("(prefers-color-scheme: dark)"); query.addEventListener("change", onChange); return () => { observer.disconnect(); query.removeEventListener("change", onChange); }; } function subscribeToMotion(onChange: () => void) { const query = window.matchMedia("(prefers-reduced-motion: reduce)"); query.addEventListener("change", onChange); return () => query.removeEventListener("change", onChange); } const prefersReducedMotion = () => window.matchMedia("(prefers-reduced-motion: reduce)").matches; const noSubscription = () => () => {}; const clamp = (value: number, min: number, max: number) => Math.min(max, Math.max(min, value)); // ---------- the component ---------- export function MeshGradient({ colors = "auto", speed = 0.4, warp = 0.6, grain = 0.06, cursorInfluence = 0.5, theme = "auto", className = "", children }: MeshGradientProps) { const boxRef = useRef(null); const hostRef = useRef(null); const reducedMotion = useSyncExternalStore(subscribeToMotion, prefersReducedMotion, () => false); // The server can't know the page theme, so it renders no colours at all (see style below) const pageDark = useSyncExternalStore(watchPageTheme, pageIsDark, () => true); const hydrated = useSyncExternalStore(noSubscription, () => true, () => false); const dark = theme === "auto" ? pageDark : theme === "dark"; // The colours actually used: a preset (in this theme's tuning) or the caller's own const presetName: NamedPreset | null = typeof colors === "string" ? (colors === "auto" ? "aurora" : colors) : null; const tuning = presetName ? presets[presetName][dark ? "dark" : "light"] : null; const palette = tuning ? tuning.colors : (colors as readonly string[]).slice(0, 5); const accent = tuning?.accent ?? -1; const paletteKey = palette.join(","); // Presets follow the theme (pale on light pages, deep on dark); your own colours are measured const light = presetName ? !dark : isLight(palette); // Dark presets let the deep base colour always lead, so light text never sits on a bright patch const lead = presetName && dark ? (presetName === "aurora" ? 0.35 : 0.45) : 0; const settings = useRef({ palette, speed, warp, grain, cursorInfluence, lead, accent }); // In reduced motion there is no loop, so a prop change asks for one fresh still frame const redraw = useRef<(() => void) | null>(null); const [failed, setFailed] = useState(false); // A lost context (GPU reset, or the browser reclaiming contexts on a busy page) is retried const [lost, setLost] = useState(false); const retries = useRef(0); const [ready, setReady] = useState(false); // The render loop reads these every frame, so changing a prop never rebuilds WebGL useEffect(() => { settings.current = { palette: paletteKey ? paletteKey.split(",") : [], speed, warp, grain, cursorInfluence, lead, accent }; redraw.current?.(); }, [paletteKey, speed, warp, grain, cursorInfluence, lead, accent]); // After a lost context, wait a moment and build a fresh canvas (a few times at most, so a // GPU that keeps failing settles on the CSS fallback instead of flickering) useEffect(() => { if (!lost) return; const id = window.setTimeout(() => { retries.current += 1; setLost(false); }, 1200); return () => window.clearTimeout(id); }, [lost]); useEffect(() => { const box = boxRef.current; const host = hostRef.current; if (!box || !host || failed || lost) return; // A fresh canvas every time: a canvas whose context was released can't make a new one const canvas = document.createElement("canvas"); canvas.setAttribute("aria-hidden", "true"); canvas.style.cssText = "position:absolute;inset:0;width:100%;height:100%;display:block"; host.appendChild(canvas); const gl = canvas.getContext("webgl", { antialias: false, alpha: false, depth: false, powerPreference: "low-power" }); if (!gl) { canvas.remove(); setFailed(true); return; } const context = gl; const program = context.createProgram()!; for (const [type, source] of [ [context.VERTEX_SHADER, vertexShader], [context.FRAGMENT_SHADER, fragmentShader], ] as const) { const shader = context.createShader(type)!; context.shaderSource(shader, source); context.compileShader(shader); context.attachShader(program, shader); context.deleteShader(shader); } context.bindAttribLocation(program, 0, "position"); context.linkProgram(program); if (!context.getProgramParameter(program, context.LINK_STATUS)) { context.deleteProgram(program); context.getExtension("WEBGL_lose_context")?.loseContext(); canvas.remove(); setFailed(true); return; } context.useProgram(program); // One triangle that covers the whole screen const buffer = context.createBuffer(); context.bindBuffer(context.ARRAY_BUFFER, buffer); context.bufferData(context.ARRAY_BUFFER, new Float32Array([-1, -1, 3, -1, -1, 3]), context.STATIC_DRAW); context.enableVertexAttribArray(0); context.vertexAttribPointer(0, 2, context.FLOAT, false, 0, 0); const uniform = (name: string) => context.getUniformLocation(program, name); const at = { colors: uniform("colors"), count: uniform("count"), time: uniform("time"), aspect: uniform("aspect"), warp: uniform("warp"), grain: uniform("grain"), pointer: uniform("pointer"), pull: uniform("pull"), seed: uniform("seed"), lead: uniform("lead"), accent: uniform("accent"), }; // The shown colours glide to new ones instead of jumping when the palette changes function targetColors() { const list = settings.current.palette.length ? settings.current.palette : presets.aurora.dark.colors; const rgb = list.map(hexToRgb); while (rgb.length < 5) rgb.push(rgb[rgb.length % list.length]!); return { values: rgb.flat(), count: clamp(list.length, 1, 5) }; } const shown = targetColors().values; let alive = true; let frame = 0; let visible = true; // Start part-way into the loops so the first frame is already a nice composition let time = 14; let lastTime = performance.now(); let seed = 0; // Where the colours lean: the eased pointer, and how present it is (0 when away) const pointer = { x: 0.5, y: 0.5, targetX: 0.5, targetY: 0.5, presence: 0, targetPresence: 0 }; function resize() { // Soft colour needs few pixels: cap the pixel ratio at 1.5 to stay light on the GPU const pixelRatio = Math.min(window.devicePixelRatio || 1, 1.5); canvas.width = Math.max(1, Math.round(box!.clientWidth * pixelRatio)); canvas.height = Math.max(1, Math.round(box!.clientHeight * pixelRatio)); context.viewport(0, 0, canvas.width, canvas.height); if (reducedMotion) drawFrame(); } function drawFrame() { const { count } = targetColors(); const { warp: bend, grain: grainAmount, cursorInfluence: lean, lead, accent } = settings.current; context.uniform3fv(at.colors, shown); context.uniform1f(at.count, count); context.uniform1f(at.time, time); context.uniform1f(at.aspect, canvas.width / canvas.height); context.uniform1f(at.warp, clamp(bend, 0, 1)); context.uniform1f(at.grain, clamp(grainAmount, 0, 0.2)); context.uniform2f(at.pointer, pointer.x, pointer.y); context.uniform1f(at.pull, clamp(lean, 0, 1) * pointer.presence); context.uniform1f(at.seed, seed); context.uniform1f(at.lead, lead); context.uniform1f(at.accent, accent); context.drawArrays(context.TRIANGLES, 0, 3); } // Easing written per 60 Hz frame, turned into the right amount for any frame length const ease = (perFrame: number, frames: number) => 1 - Math.pow(1 - perFrame, frames); // Advance by the real time since the last frame (measured in 60 Hz frames), so the drift // is smooth whatever the refresh rate and never stalls or doubles up on a jittery frame function step(frames: number) { time += (frames / 60) * clamp(settings.current.speed, 0, 1) * 1.6; // The lean is slow on purpose: the colours drift towards the cursor, they don't chase it const follow = ease(0.035, frames); pointer.x += (pointer.targetX - pointer.x) * follow; pointer.y += (pointer.targetY - pointer.y) * follow; pointer.presence += (pointer.targetPresence - pointer.presence) * ease(0.03, frames); const glide = ease(0.05, frames); const target = targetColors().values; for (let i = 0; i < shown.length; i++) shown[i]! += (target[i]! - shown[i]!) * glide; } function render(now: number) { if (!alive) return; frame = requestAnimationFrame(render); if (!visible) { lastTime = now; return; } // Capped, so coming back to a tab doesn't jump the colours forward const frames = Math.min(Math.max(now - lastTime, 0), 100) / (1000 / 60); lastTime = now; step(frames); seed = (seed + 1.618) % 97; drawFrame(); } function onPointerMove(event: PointerEvent) { if (!event.isPrimary) return; const rect = box!.getBoundingClientRect(); pointer.targetX = (event.clientX - rect.left) / rect.width; pointer.targetY = 1 - (event.clientY - rect.top) / rect.height; pointer.targetPresence = 1; } function onPointerLeave(event: PointerEvent) { if (event.pointerType === "mouse") pointer.targetPresence = 0; } // A lifted finger lets the colours drift back by themselves function onPointerUp(event: PointerEvent) { if (event.pointerType !== "mouse") pointer.targetPresence = 0; } function onContextLost(event: Event) { event.preventDefault(); cancelAnimationFrame(frame); if (!alive) return; if (retries.current < 3) setLost(true); else setFailed(true); } const resizeObserver = new ResizeObserver(resize); // Nothing to draw while the box is off screen const visibility = new IntersectionObserver(([entry]) => { visible = entry?.isIntersecting ?? true; }); resize(); resizeObserver.observe(box); canvas.addEventListener("webglcontextlost", onContextLost); if (reducedMotion) { // A still frame: the colours snap straight to the palette and stay put redraw.current = () => { shown.splice(0, shown.length, ...targetColors().values); drawFrame(); }; redraw.current(); } else { visibility.observe(box); box.addEventListener("pointermove", onPointerMove); box.addEventListener("pointerdown", onPointerMove); box.addEventListener("pointerleave", onPointerLeave); box.addEventListener("pointerup", onPointerUp); box.addEventListener("pointercancel", onPointerUp); frame = requestAnimationFrame(render); } setReady(true); return () => { alive = false; redraw.current = null; cancelAnimationFrame(frame); resizeObserver.disconnect(); visibility.disconnect(); box.removeEventListener("pointermove", onPointerMove); box.removeEventListener("pointerdown", onPointerMove); box.removeEventListener("pointerleave", onPointerLeave); box.removeEventListener("pointerup", onPointerUp); box.removeEventListener("pointercancel", onPointerUp); canvas.removeEventListener("webglcontextlost", onContextLost); context.deleteBuffer(buffer); context.deleteProgram(program); // Hand the context back now: browsers only allow a few at a time context.getExtension("WEBGL_lose_context")?.loseContext(); canvas.remove(); setReady(false); }; }, [reducedMotion, failed, lost]); // Under the canvas (and instead of it without WebGL): the same colours as soft CSS glows const [base = "#808080", ...rest] = palette; const spots = ["18% 22%", "82% 28%", "70% 82%", "24% 78%"]; // The accent stays a small glow here too, as in the shader const fallback = rest .map((hex, i) => { const reach = i + 1 === accent ? "34% 34%" : "60% 60%"; return `radial-gradient(${reach} at ${spots[i % spots.length]}, ${hex} 0%, transparent 70%)`; }) .join(", "); // Until hydration the theme is unknown, so nothing commits to a tuning: no fallback colours // and no ink (text inherits the page colour). That avoids a flash of the dark palette on a // light page. The colours then ease in with the canvas. const style = ( hydrated ? { "--mesh-ink": light ? "#191713" : "#f7f4ee", "--mesh-ink-soft": light ? "rgba(25, 23, 19, 0.68)" : "rgba(247, 244, 238, 0.78)", color: "var(--mesh-ink)", backgroundColor: base, backgroundImage: fallback, touchAction: "pan-y", } : { touchAction: "pan-y" } ) as CSSProperties; return (

{failed ? null : ( ); } 4e:["$","div",null,{"className":"mt-3 flex min-h-0 min-w-0 flex-1 flex-col gap-3","children":[null,["$","$L4f",null,{"files":[{"path":"registry/dimaac/mesh-gradient/mesh-gradient.tsx","content":"$50","type":"registry:component","target":"components/dimaac/mesh-gradient.tsx"}],"className":"h-[70svh] min-h-80"}]]}]