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ITS: redefine seeding vertex label #14444

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Merged
f3sch merged 1 commit into from
Jun 25, 2025
Merged

ITS: redefine seeding vertex label #14444

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20 changes: 13 additions & 7 deletions Detectors/ITSMFT/ITS/tracking/include/ITStracking/VertexerTraits.h
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Original file line number Diff line number Diff line change
Expand Up @@ -101,19 +101,25 @@ class VertexerTraits
virtual bool usesMemoryPool() const noexcept { return true; }
void setMemoryPool(std::shared_ptr<BoundedMemoryResource>& pool) { mMemoryPool = pool; }

template <typename T = o2::MCCompLabel>
static std::pair<T, float> computeMain(const bounded_vector<T>& elements)
static std::pair<o2::MCCompLabel, float> computeMain(const bounded_vector<o2::MCCompLabel>& elements)
{
T elem;
// we only care about the source&event of the tracks, not the trackId
auto composeVtxLabel = [](const o2::MCCompLabel& lbl) -> o2::MCCompLabel {
return {o2::MCCompLabel::maxTrackID(), lbl.getEventID(), lbl.getSourceID(), lbl.isFake()};
};
std::unordered_map<o2::MCCompLabel, size_t> frequency;
for (const auto& element : elements) {
++frequency[composeVtxLabel(element)];
}
o2::MCCompLabel elem{};
size_t maxCount = 0;
for (auto& element : elements) {
size_t count = std::count(elements.begin(), elements.end(), element);
for (const auto& [key, count] : frequency) {
if (count > maxCount) {
maxCount = count;
elem = element;
elem = key;
}
}
return std::make_pair(elem, static_cast<float>(maxCount) / elements.size());
return std::make_pair(elem, static_cast<float>(maxCount) / static_cast<float>(elements.size()));
}

protected:
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18 changes: 9 additions & 9 deletions Detectors/ITSMFT/ITS/tracking/src/VertexerTraits.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -506,18 +506,18 @@ void VertexerTraits::computeVertices(const int iteration)

if (beamDistance2 < nsigmaCut && o2::gpu::GPUCommonMath::Abs(mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[2]) < mVrtParams[iteration].maxZPositionAllowed) {
atLeastOneFound = true;
vertices.emplace_back(o2::math_utils::Point3D<float>(mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[0],
mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[1],
mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[2]),
mTimeFrame->getTrackletClusters(rofId)[iCluster].getRMS2(), // Symm matrix. Diagonal: RMS2 components,
// off-diagonal: square mean of projections on planes.
mTimeFrame->getTrackletClusters(rofId)[iCluster].getSize(), // Contributors
mTimeFrame->getTrackletClusters(rofId)[iCluster].getAvgDistance2()); // In place of chi2
auto& vertex = vertices.emplace_back(o2::math_utils::Point3D<float>(mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[0],
mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[1],
mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[2]),
mTimeFrame->getTrackletClusters(rofId)[iCluster].getRMS2(), // Symm matrix. Diagonal: RMS2 components,
// off-diagonal: square mean of projections on planes.
mTimeFrame->getTrackletClusters(rofId)[iCluster].getSize(), // Contributors
mTimeFrame->getTrackletClusters(rofId)[iCluster].getAvgDistance2()); // In place of chi2

if (iteration) {
vertices.back().setFlags(Vertex::UPCMode);
vertex.setFlags(Vertex::UPCMode);
}
vertices.back().setTimeStamp(mTimeFrame->getTrackletClusters(rofId)[iCluster].getROF());
vertex.setTimeStamp(mTimeFrame->getTrackletClusters(rofId)[iCluster].getROF());
if (mTimeFrame->hasMCinformation()) {
bounded_vector<o2::MCCompLabel> labels(mMemoryPool.get());
for (auto& index : mTimeFrame->getTrackletClusters(rofId)[iCluster].getLabels()) {
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