Function setHovered

src/ChartGPU.ts:1132–1160

(next: HitTestMatch | null, event: PointerEvent)

  };

  const setHovered = (next: HitTestMatch | null, event: PointerEvent): void => {
    const prev = hovered;
    hovered = next;

    if (prev === null && next === null) return;

    if (prev === null && next !== null) {
      emit('mouseover', buildPayload(next, event));
      return;
    }

    if (prev !== null && next === null) {
      emit('mouseout', buildPayload(prev, event));
      return;
    }

    if (prev === null || next === null) return;

    const prevSeriesIndex = prev.kind === 'cartesian' ? prev.match.seriesIndex : prev.seriesIndex;
    const prevDataIndex = prev.kind === 'cartesian' ? prev.match.dataIndex : prev.dataIndex;
    const nextSeriesIndex = next.kind === 'cartesian' ? next.match.seriesIndex : next.seriesIndex;
    const nextDataIndex = next.kind === 'cartesian' ? next.match.dataIndex : next.dataIndex;

    const samePoint = prevSeriesIndex === nextSeriesIndex && prevDataIndex === nextDataIndex;
    if (samePoint) return;

    emit('mouseout', buildPayload(prev, event));
    emit('mouseover', buildPayload(next, event));
  };

  const clearTapCandidateIfMatches = (e: PointerEvent): void => {
    if (!tapCandidate) return;