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Update NearestWireID #461

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Merged
ibsafa merged 1 commit into from
May 8, 2024
Merged

Update NearestWireID #461

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17 changes: 7 additions & 10 deletions sbncode/Cluster3D/SnippetHit3DBuilderSBN_tool.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -1713,29 +1713,26 @@ int SnippetHit3DBuilderSBN::FindNumberInRange(const Hit2DSet& hit2DSet, const re

geo::WireID SnippetHit3DBuilderSBN::NearestWireID(const Eigen::Vector3f& position, const geo::WireID& wireIDIn) const
{
geo::WireID wireID = wireIDIn;
int wire(0);

// Embed the call to the geometry's services nearest wire id method in a try-catch block
try
{
// Switch from NearestWireID to this method to avoid the roundoff error issues...
//double distanceToWire = m_geometry->Plane(wireIDIn).WireCoordinate(geo::vect::toPoint(position.data()));

//wireID.Wire = int(distanceToWire);

// Not sure the thinking above but is wrong... switch back to NearestWireID...
wireID = m_geometry->NearestWireID(geo::vect::toPoint(position.data()),wireIDIn);
wire = (m_geometry->NearestWireID(geo::vect::toPoint(position.data()),wireIDIn)).Wire;
}
catch(std::exception& exc)
catch(std::exception& exc)
{
// This can happen, almost always because the coordinates are **just** out of range
mf::LogWarning("Cluster3D") << "Exception caught finding nearest wire, position - " << exc.what() << std::endl;

// Assume extremum for wire number depending on z coordinate
if (position[2] < 0.5 * m_geometry->DetLength()) wireID.Wire = 0;
else wireID.Wire = m_geometry->Nwires(wireIDIn.asPlaneID()) - 1;
if (position[2] < 0.5 * m_geometry->DetLength()) wire = 0;
else wire = m_geometry->Nwires(wireIDIn.asPlaneID()) - 1;
}

geo::WireID wireID(wireIDIn.Cryostat,wireIDIn.TPC,wireIDIn.Plane,wire);

return wireID;
}

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