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further optimise graph cpu usage

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This commit is contained in:
Amateur Audio Dude
2025-04-22 18:49:29 +10:00
committed by GitHub
parent 67664d6984
commit 2ae4e0d5bd
1 changed files with 12 additions and 8 deletions
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20
web/js/main.js
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@@ -444,6 +444,7 @@ function initCanvas() {
bottom: -10
},
},
animation: false,
responsive: true,
maintainAspectRatio: false,
elements: {
@@ -459,20 +460,23 @@ function initCanvas() {
duration: 30000,
refresh: 75,
delay: 150,
frameRate: 30, // default is 30
onRefresh: (chart) => {
if (!chart?.data?.datasets || parsedData?.sig === undefined) return;
if ((isAndroid || isIOS || isIPadOS) && (document.hidden || !document.hasFocus())) return;
signalBuffer.push(parsedData.sig);
if (signalBuffer.length > 8) {
signalBuffer.shift();
}
const sig = parsedData.sig;
if (signalBuffer.length > 0 && signalBuffer[signalBuffer.length - 1] === sig) return; // skip if data hasn't changed
signalBuffer.push(sig);
if (signalBuffer.length > 8) signalBuffer.shift();
const avgSignal = signalBuffer.reduce((sum, val) => sum + val, 0) / signalBuffer.length;
chart.data.datasets[0].data.push({
x: Date.now(),
y: avgSignal
});
const dataset = chart.data.datasets[0].data;
dataset.push({ x: Date.now(), y: avgSignal });
if (dataset.length > 400) dataset.shift(); // duration / refresh
}
}
},