const TPCSectorData::SegmentInfo& iSeg = TPCSectorData::GetInnSeg();
const TPCSectorData::SegmentInfo& o2Seg = TPCSectorData::GetOut2Seg();
+#if ROOT_VERSION_CODE <= ROOT_VERSION(5,11,2)
bbox_init();
+#else
+ BBoxInit();
+#endif
Float_t w = o2Seg.GetNMaxPads()*o2Seg.GetPadWidth()/2;
fBBox[0] = -w;
fBBox[1] = w;