72 lines
1.9 KiB
JavaScript
72 lines
1.9 KiB
JavaScript
// WebSocket client to broadcast smooth rainbow color changes across the cluster
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// Usage: node ws-cluster-broadcast-rainbow.js ws://<device-ip>/ws
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const WebSocket = require('ws');
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const url = process.argv[2] || 'ws://127.0.0.1/ws';
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const ws = new WebSocket(url);
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function hsvToRgb(h, s, v) {
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const c = v * s;
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const x = c * (1 - Math.abs(((h / 60) % 2) - 1));
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const m = v - c;
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let r = 0, g = 0, b = 0;
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if (h < 60) { r = c; g = x; b = 0; }
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else if (h < 120) { r = x; g = c; b = 0; }
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else if (h < 180) { r = 0; g = c; b = x; }
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else if (h < 240) { r = 0; g = x; b = c; }
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else if (h < 300) { r = x; g = 0; b = c; }
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else { r = c; g = 0; b = x; }
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const R = Math.round((r + m) * 255);
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const G = Math.round((g + m) * 255);
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const B = Math.round((b + m) * 255);
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return { r: R, g: G, b: B };
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}
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function toHex({ r, g, b }) {
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const h = (n) => n.toString(16).padStart(2, '0').toUpperCase();
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return `#${h(r)}${h(g)}${h(b)}`;
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}
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let hue = 0;
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const SAT = 1.0; // full saturation
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const VAL = 1.0; // full value
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const BRIGHTNESS = 80;
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const UPDATE_RATE = 100; // ms
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let timer = null;
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ws.on('open', () => {
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console.log('Connected to', url);
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// UPDATE_RATE ms updates (10 Hz). Be aware this can saturate slow links.
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timer = setInterval(() => {
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const rgb = hsvToRgb(hue, SAT, VAL);
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const color = toHex(rgb);
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const envelope = {
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event: 'api/neopattern/color',
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data: { color, brightness: BRIGHTNESS }
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};
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const msg = { event: 'cluster/broadcast', payload: envelope };
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try {
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ws.send(JSON.stringify(msg));
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} catch (_) {}
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hue = (hue + 2) % 360; // advance hue (adjust for speed)
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}, UPDATE_RATE);
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});
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ws.on('message', (data) => {
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// Optionally throttle logs: comment out for quieter output
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// console.log('WS:', data.toString());
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});
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ws.on('error', (err) => {
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console.error('WebSocket error:', err.message);
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});
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ws.on('close', () => {
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if (timer) clearInterval(timer);
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console.log('WebSocket closed');
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});
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