Function handleGenerate

examples/worker-rendering/main.ts:520–612

()

// ============================================================================

async function handleGenerate(): Promise<void> {
  const pointCount = parseInt((document.getElementById('pointCount') as HTMLInputElement).value);
  const seriesCount = parseInt((document.getElementById('seriesCount') as HTMLInputElement).value);
  const dataType = (document.getElementById('dataType') as HTMLSelectElement).value as DataType;
  const renderMode = (document.getElementById('renderMode') as HTMLSelectElement).value as RenderMode;

  // Validation
  if (!Number.isFinite(pointCount) || pointCount < 1) {
    showStatus('Invalid point count', 'error');
    return;
  }

  // Warning for very large datasets
  if (pointCount > 100_000_000) {
    showWarningToast(
      `⚠️ Generating ${formatNumber(pointCount)} points. This may take a while and consume significant memory.`,
      10000
    );
  }

  if (pointCount > 1_000_000_000) {
    showWarningToast(
      `🔥 BILLION+ POINTS! This is hardcore. Your system might struggle. Emergency stop is available.`,
      15000
    );
  }

  // Disable buttons during generation
  disableAllButtons();
  showStatus('Generating data...', 'warning');

  try {
    // Dispose existing chart
    stopStreaming();
    disposeChart();
    clearMetricsDisplay();

    // Generate data
    const startTime = performance.now();
    const data = await generateData(pointCount, dataType, (progress) => {
      showStatus(`Generating data... ${(progress * 100).toFixed(0)}%`, 'warning');
    });
    const genTime = performance.now() - startTime;

    showStatus(`Generated ${formatNumber(pointCount)} points in ${formatDuration(genTime)}`, 'success');

    // Create chart
    state.mode = renderMode;
    state.dataType = dataType;
    state.chart = await createChart(renderMode, dataType, data);

    // Check performance capabilities
    const capabilities = state.chart.getPerformanceCapabilities();
    if (capabilities) {
      console.log('[ChartGPU] Performance capabilities:', capabilities);
    }

    // Subscribe to performance updates