Function appendData

src/ChartGPU.ts:1322–1374

(seriesIndex, newPoints)

      requestRender();
    },
    appendData(seriesIndex, newPoints) {
      if (disposed) return;
      if (!Number.isFinite(seriesIndex)) return;
      if (seriesIndex < 0 || seriesIndex >= resolvedOptions.series.length) return;
      if (!newPoints || newPoints.length === 0) return;

      const s = resolvedOptions.series[seriesIndex]!;
      if (s.type === 'pie') {
        // Pie series are non-cartesian and currently not supported by streaming append.
        if (!warnedPieAppendSeries.has(seriesIndex)) {
          warnedPieAppendSeries.add(seriesIndex);
          console.warn(
            `ChartGPU.appendData(${seriesIndex}, ...): pie series are not supported by streaming append. Use setOption(...) to replace pie data.`
          );
        }
        return;
      }

      // Forward to coordinator (GPU buffers + render-state updates), then keep ChartGPU's
      // hit-testing runtime store in sync.
      coordinator?.appendData(seriesIndex, newPoints);

      if (s.type === 'candlestick') {
        // Handle candlestick series with OHLC data points.
        const owned = (runtimeRawDataByIndex[seriesIndex] ?? []) as OHLCDataPoint[];
        owned.push(...(newPoints as OHLCDataPoint[]));
        runtimeRawDataByIndex[seriesIndex] = owned;

        runtimeRawBoundsByIndex[seriesIndex] = extendBoundsWithOHLCDataPoints(
          runtimeRawBoundsByIndex[seriesIndex],
          newPoints as OHLCDataPoint[]
        );
      } else {
        // Handle other cartesian series (line, area, bar, scatter).
        const owned = (runtimeRawDataByIndex[seriesIndex] ?? []) as DataPoint[];
        owned.push(...(newPoints as DataPoint[]));
        runtimeRawDataByIndex[seriesIndex] = owned;

        runtimeRawBoundsByIndex[seriesIndex] = extendBoundsWithDataPoints(
          runtimeRawBoundsByIndex[seriesIndex],
          newPoints as DataPoint[]
        );
      }

      cachedGlobalBounds = computeGlobalBounds(resolvedOptions.series, runtimeRawBoundsByIndex);

      runtimeHitTestSeriesCache = null;
      runtimeHitTestSeriesVersion++;
      interactionScalesCache = null;

      // Ensure a render is scheduled (coalesced) like setOption does.
      requestRender();
    },
    resize,
    dispose,
    on(eventName, callback) {