react"; import { Badge, Button, Card, Heading, Row, Skeleton, Spacer, Stack, Text } from "@vibes.diy/ui"; import { Slider } from "@vibes.diy/ui/interactive"; import { attach, run, startCamera } from "./lib/hydra.js"; // Each knob is a number dropped into one sketch string; every move re-runs it. const KNOBS = [ { key: "sides", label: "Mirror", min: 1, max: 12, step: 1 }, { key: "warp", label: "Warp", min: 0, max: 0.6, step: 0.01 }, { key: "trail", label: "Trails", min: 0, max: 0.95, step: 0.01 }, { key: "spin", label: "Spin", min: -0.5, max: 0.5, step: 0.01 }, { key: "hue", label: "Colour drift", min: 0, max: 0.3, step: 0.01 }, ]; const START = { sides: 4, warp: 0.2, trail: 0.6, spin: 0.1, hue: 0.05 }; function toSketch(k, camera) { const source = camera ? "src(s0).saturate(1.4)" : "osc(10, 0.08, 1.2)"; return [ `${source}`, ` .modulate(noise(2.5), ${k.warp})`, ` .kaleid(${k.sides})`, ` .rotate(() => time * ${k.spin})`, ` .colorama(${k.hue})`, ` .blend(src(o0).scale(1.01), ${k.trail})`, ` .out()`, ].join("\n"); } export default function App() { const stage = useRef(null); const [knobs, setKnobs] = useState(START); const [camera, setCamera] = useState(false); const [live, setLive] = useState(false); const [note, setNote] = useState(null); const cameraOff = useRef(null); const alive = useRef(true); // false once the synth unmounts, so a late camera is stopped at once const asking = useRef(false); // one camera request at a time const code = toSketch(knobs, camera); useEffect(() => { let gone = false; let detach = () => {}; attach(stage.current).then((d) => { if (gone) return d?.(); if (!d) return setNote("The video engine did not load. Check the connection and reload the page."); detach = d; setLive(true); }); return () => { gone = true; alive.current = false; detach(); cameraOff.current?.(); }; }, []); // The interface writes the sketch: any change re-runs it, and the synth swaps without a gap. useEffect(() => { if (live) run(code).then((r) => setNote(r.ok ? null : r.message)); }, [live, code]); async function cameraOn() { if (asking.current) return; asking.current = true; try { const off = await startCamera("s0"); // asks from this press; the sketch reads it as s0 if (!alive.current) return off(); // the synth closed while the permission prompt was up cameraOff.current = off; setCamera(true); setNote(null); } catch { setNote("The camera stayed off, so the synth plays its own stripes. Allow the camera and press again."); } finally { asking.current = false; } } function cameraBack() { cameraOff.current?.(); cameraOff.current = null; setCamera(false); } return (

Video Synth {live ? (camera ? "Camera in" : "Live") : "Warming up…"}

{!live &&

}

{KNOBS.map((k) => ( setKnobs((now) => ({ ...now, [k.key]: v }))} min={k.min} max={k.max} step={k.step} label={k.label} /> {k.label} {knobs[k.key]} ))} {note && {note}} The sketch these knobs write — paste it into any Hydra editor

{code}

Video by Hydra (AGPL), fetched from its own address when the page opens.

); }