jetstream v2 in zig stream.waow.tech
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214(() => { function randomFrom(sequence) { let seed = Number(BigInt.asUintN(32, sequence ^ (sequence >> 32n))) || 1; return () => { seed = Math.imul(seed ^ seed >>> 16, 0x21f0aaad); seed = Math.imul(seed ^ seed >>> 15, 0x735a2d97); seed ^= seed >>> 15; return (seed >>> 0) / 4294967296; }; } function createCurrent() { return { sequence: 0n, seed: 0n, entropy: 0n, width: 390, height: 900, shards: [], from: 0, to: 0, at: 0 }; } function progress(current, now) { return Math.max(0, Math.min(1, (now - current.at) / 5000)); } function position(current, now) { return current.from + (current.to - current.from) * progress(current, now); } function lightAt(shard, t) { return shard.light + (shard.target - shard.light) * t; } function makeShards(sequence, width, height) { const random = randomFrom(sequence); const points = []; const columns = Math.max(3, Math.min(24, Math.ceil(width / 120))); const rows = Math.max(4, Math.min(16, Math.ceil(height / 115))); for (let row = 0; row <= rows; row++) { for (let col = 0; col <= columns; col++) { points.push([ (col + (col && col < columns ? (random() - .5) * .45 : 0)) / columns, (row + (row && row < rows ? (random() - .5) * .45 : 0)) / rows, ]); } } const shards = []; function shard(a, b, c) { shards.push({ points: [points[a], points[b], points[c]], tint: random(), light: 0, target: 0 }); } for (let row = 0; row < rows; row++) { for (let col = 0; col < columns; col++) { const a = row * (columns + 1) + col, b = a + 1, c = a + columns + 1, d = c + 1; if (random() < .5) { shard(a, b, c); shard(b, d, c); } else { shard(a, b, d); shard(a, d, c); } } } return shards; } function resizeCurrent(current, width, height) { if (current.width === width && current.height === height) return; current.width = width; current.height = height; if (current.sequence === 0n) return; current.shards = makeShards(current.seed, width, height); const random = randomFrom(current.entropy); for (const shard of current.shards) { shard.light = shard.target = current.entropy === 0n ? 0 : random() ** 4; } } function receive(current, sequence, now, entropy = 0n) { if (sequence <= 0n || sequence === current.sequence) return false; const fresh = current.sequence === 0n || sequence < current.sequence; const t = progress(current, now); const delta = fresh ? 0 : Number(sequence - current.sequence > 5000n ? 5000n : sequence - current.sequence); if (fresh) { current.seed = sequence; current.shards = makeShards(sequence, current.width, current.height); } current.entropy = entropy; const random = randomFrom(entropy); for (const shard of current.shards) { shard.light = lightAt(shard, t); shard.target = entropy === 0n ? 0 : random() ** 4; } current.from = fresh ? 0 : position(current, now); current.to = current.from + delta / 50000; current.at = now; current.sequence = sequence; return true; } function absorb(seed, message) { for (let i = 0; i < message.length; i++) seed = Math.imul(seed ^ message.charCodeAt(i), 16777619); return seed >>> 0; } function grainFrom(seed, points = [[0,0],[384,0],[0,384]], tint = 0) { const [a,b,c] = points; const area = Math.abs((b[0]-a[0])*(c[1]-a[1])-(c[0]-a[0])*(b[1]-a[1]))/2; const random = randomFrom(seed); const angle = Math.atan2(b[1]-a[1],b[0]-a[0])*.12 + (tint-.5)*.8; return Array.from({length:Math.ceil(area/90)},()=>{ let u=random(), v=random(); if(u+v>1){u=1-u;v=1-v;} const x=a[0]+u*(b[0]-a[0])+v*(c[0]-a[0]); const y=a[1]+u*(b[1]-a[1])+v*(c[1]-a[1]); const theta=angle+Math.sin(x/190+y/260)*.35+(random()-.5)*.22; const length=1.1+random()**3*5.4, breadth=.12+random()*.36; return {x,y,dx:Math.cos(theta)*length,dy:Math.sin(theta)*length, nx:-Math.sin(theta)*breadth,ny:Math.cos(theta)*breadth}; }); } if (typeof module !== 'undefined') module.exports = { createCurrent, position, receive, absorb, resizeCurrent, grainFrom }; if (typeof document === 'undefined') return; if (document.body.dataset.page === 'strata' && !document.getElementById('atmosphere')) { const layer = document.createElement('div'); layer.id = 'atmosphere'; layer.setAttribute('aria-hidden','true'); const glass = document.createElement('canvas'); glass.id = 'depth'; glass.dataset.current = ''; layer.append(glass); document.body.prepend(layer); } const canvas = document.querySelector('canvas[data-current]'); if (!canvas) return; const context = canvas.getContext('2d'); if (!context) return; const current = createCurrent(); const reduced = matchMedia('(prefers-reduced-motion: reduce)'); let width = 0, height = 0, frame = 0, last = 0, entropy = 0; let socket, retry; const material = new WeakMap(); const pigments = ['72,117,101','76,112,142','111,96,135','141,120,79','139,74,82']; function texture(shard) { if (material.has(shard)) return material.get(shard); const points = shard.points.map(([x,y]) => [x*width,y*height]); const [a,b,c] = points; const faces = new Path2D(), edges = new Path2D(), shadows = new Path2D(); const flecks=grainFrom(current.seed+BigInt(Math.round(shard.tint*1e9)),points,shard.tint); for (const {x,y,dx,dy,nx,ny} of flecks) { faces.moveTo(x-dx*.5,y-dy*.5);faces.lineTo(x-dx*.12+nx,y-dy*.12+ny);faces.lineTo(x+dx*.5,y+dy*.5);faces.closePath(); shadows.moveTo(x-dx*.5,y-dy*.5);shadows.lineTo(x+dx*.18-nx*.6,y+dy*.18-ny*.6);shadows.lineTo(x+dx*.5,y+dy*.5);shadows.closePath(); edges.moveTo(x-dx*.5,y-dy*.5);edges.lineTo(x-dx*.12+nx*.35,y-dy*.12+ny*.35); edges.moveTo(x+dx*.08,y+dy*.08);edges.lineTo(x+dx*.5,y+dy*.5); } const result={faces,edges,shadows,cx:(a[0]+b[0]+c[0])/3,cy:(a[1]+b[1]+c[1])/3}; material.set(shard,result);return result; } function connect() { clearTimeout(retry); if (document.hidden || socket) return; const url = new URL('/subscribe?maxMessageSizeBytes=256', location.href); url.protocol = location.protocol === 'https:' ? 'wss:' : 'ws:'; socket = new WebSocket(url); socket.onmessage = event => { if (typeof event.data !== 'string') return; entropy = absorb(entropy || 2166136261, event.data); dispatchEvent(new CustomEvent('stream-arrival',{detail:entropy})); }; socket.onclose = () => { socket = null; if (!document.hidden) retry = setTimeout(connect, 15000); }; socket.onerror = () => socket.close(); } function paint(now) { const phase = reduced.matches ? current.to : position(current, now); const t = reduced.matches ? 1 : progress(current, now); context.fillStyle = '#040708'; context.fillRect(0,0,width,height); for (const shard of current.shards) { const surface=texture(shard); const light=lightAt(shard,t); const bend=Math.sin(surface.cx/340-phase*5)*65+Math.sin(surface.cx/150-phase*2)*18; const stream=.5+.5*Math.sin((surface.cy-bend)/130+phase*3); const margin=Math.min(1,Math.abs(surface.cx-width/2)/(width*.46)); const illumination=(.085+stream**5*(.10+light*.46))*(.65+.35*margin**1.4); const pigment= pigments[shard.tint<.35?0:shard.tint<.70?1:shard.tint<.90?2:shard.tint<.97?3:4]; const [a,b,c]=shard.points.map(([x,y])=>[x*width,y*height]); context.beginPath();context.moveTo(...a);context.lineTo(...b);context.lineTo(...c);context.closePath(); context.fillStyle=`rgba(${pigment},${illumination*.022})`;context.fill(); context.save();context.clip(); context.fillStyle=`rgba(${pigment},${illumination*.40})`;context.fill(surface.faces); context.fillStyle=`rgba(${pigment},${illumination*.12})`;context.fill(surface.shadows); context.strokeStyle=`rgba(${pigment},${illumination})`; context.lineWidth=.26;context.stroke(surface.edges); context.strokeStyle=`rgba(170,205,212,${illumination*light*.09})`; context.lineWidth=.18;context.stroke(surface.edges); context.restore(); context.beginPath();context.moveTo(...a);context.lineTo(...b); context.strokeStyle=`rgba(${pigment},${illumination*.09})`; context.lineWidth=.35;context.stroke(); } }
function animate(now) { frame = 0; if (document.hidden) return; if (now - last >= 50) { paint(now); last = now; } if (!reduced.matches && now < current.at + 5000) frame = requestAnimationFrame(animate); else paint(now); } function wake() { if (!frame && !document.hidden) frame = requestAnimationFrame(animate); } function resize() { const ratio = Math.min(devicePixelRatio || 1, 3); width = canvas.clientWidth; height = canvas.clientHeight; resizeCurrent(current, width, height); canvas.width = Math.round(width * ratio); canvas.height = Math.round(height * ratio); context.setTransform(ratio, 0, 0, ratio, 0, 0); paint(performance.now()); } addEventListener('stream-sequence', event => { if (receive(current, BigInt(event.detail), performance.now(), BigInt(entropy))) wake(); }); addEventListener('resize', resize); new ResizeObserver(resize).observe(canvas); document.addEventListener('visibilitychange', () => { if (document.hidden) { clearTimeout(retry); if (socket) socket.close(); } else { connect(); wake(); } }); reduced.addEventListener('change', wake); resize(); connect(); if (document.body.dataset.page === 'strata') { async function observe() { if (document.hidden) return; try { const response = await fetch('/status', {headers:{Accept:'text/plain'},cache:'no-store'}); if (!response.ok) return; const match = (await response.text()).match(/upstream seq\s+([\d,]+)/); if (match) dispatchEvent(new CustomEvent('stream-sequence',{detail:match[1].replace(/,/g,'')})); } catch {} } observe(); setInterval(observe,5000); }})();