Function throttledUpdateCurrentCandle

examples/candlestick-streaming/main.ts:218–239

()

// Throttle current candle updates to avoid overwhelming the GPU
let lastCurrentCandleUpdate = 0;
function throttledUpdateCurrentCandle() {
  const now = performance.now();
  if (now - lastCurrentCandleUpdate < 100) return;
  lastCurrentCandleUpdate = now;

  // Update just the last candle efficiently by updating the full options with new data
  const lastIdx = data.length - 1;
  const series0 = fullChartOptions.series?.[0];
  if (lastIdx >= 0 && series0 && series0.type === 'candlestick') {
    // Preserve full series config and only update data
    fullChartOptions = {
      ...fullChartOptions,
      series: [
        {
          ...series0,
          data,
        },
      ],
    };
    chart.setOption(fullChartOptions);
  }
}

function toggleStreaming() {
  isStreaming = !isStreaming;