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// This file is part of the Acts project.
//
// Copyright (C) 2019 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
//#include "HitSmearing.hpp"
#include "JugReco/GeometryContainers.hpp"
// Gaudi
#include "GaudiAlg/GaudiAlgorithm.h"
#include "GaudiKernel/ToolHandle.h"
#include "GaudiAlg/Transformer.h"
#include "GaudiAlg/GaudiTool.h"
#include "GaudiKernel/RndmGenerators.h"
#include "GaudiKernel/Property.h"
#include "JugBase/DataHandle.h"
#include "JugBase/IGeoSvc.h"
#include "DDRec/CellIDPositionConverter.h"
#include "DDRec/SurfaceManager.h"
#include "DDRec/Surface.h"
#include "DD4hep/Volumes.h"
#include "DD4hep/DD4hepUnits.h"
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#include "Acts/Utilities/Definitions.hpp"
#include "Acts/Geometry/TrackingGeometry.hpp"
#include "Acts/Plugins/DD4hep/DD4hepDetectorElement.hpp"
#include "JugReco/SourceLinks.h"
#include "eicd/TrackerHitCollection.h"
namespace Jug::Reco {
class TrackerSourceLinker : public GaudiAlgorithm {
public:
DataHandle<eic::TrackerHitCollection> m_inputHitCollection{"inputHitCollection", Gaudi::DataHandle::Reader, this};
DataHandle<SourceLinkContainer> m_outputSourceLinks{"outputSourceLinks", Gaudi::DataHandle::Writer, this};
/// Pointer to the geometry service
SmartIF<IGeoSvc> m_geoSvc;
/// Lookup container for hit surfaces that generate smeared hits
std::unordered_map<uint64_t, const Acts::Surface*> m_surfaces;
public:
TrackerSourceLinker(const std::string& name, ISvcLocator* svcLoc)
: GaudiAlgorithm(name, svcLoc) {
declareProperty("inputHitCollection", m_inputHitCollection, "");
declareProperty("outputSourceLinks", m_outputSourceLinks, "");
}
StatusCode initialize() override {
if (GaudiAlgorithm::initialize().isFailure())
return StatusCode::FAILURE;
m_geoSvc = service("GeoSvc");
if (!m_geoSvc) {
error() << "Unable to locate Geometry Service. "
<< "Make sure you have GeoSvc and SimSvc in the right order in the configuration."
<< endmsg;
return StatusCode::FAILURE;
}
debug() << "visiting all the surfaces " << endmsg;
m_geoSvc->trackingGeometry()->visitSurfaces([this](const Acts::Surface* surface) {
// for now we just require a valid surface
if (not surface) {
return;
}
auto det_element = dynamic_cast<const Acts::DD4hepDetectorElement*>(surface->associatedDetectorElement());
if(!det_element) {
debug() << "invalid det_element!!! " << endmsg;
return;
}
this->m_surfaces.insert_or_assign(det_element->identifier(), surface);
});
return StatusCode::SUCCESS;
}
StatusCode execute() override {
// input collection
const eic::TrackerHitCollection* hits = m_inputHitCollection.get();
// Create output collections
auto source_links = m_outputSourceLinks.createAndPut();
// setup local covariance
// TODO add support for per volume/layer/module settings
debug() << (*hits).size() << " hits " << endmsg;
for(const auto& ahit : *hits) {
Acts::BoundMatrix cov = Acts::BoundMatrix::Zero();
cov(Acts::eBoundLoc0, Acts::eBoundLoc0) = ahit.covMatrix(0)*Acts::UnitConstants::mm*ahit.covMatrix(0)*Acts::UnitConstants::mm;
cov(Acts::eBoundLoc1, Acts::eBoundLoc1) = ahit.covMatrix(1)*Acts::UnitConstants::mm*ahit.covMatrix(1)*Acts::UnitConstants::mm;
auto vol_ctx = m_geoSvc->cellIDPositionConverter()->findContext(ahit.cellID());
debug() << " hit : \n" << ahit << endmsg;
//debug() << "cell ID : " << ahit.cellID() << endmsg;
//debug() << " position : (" << ahit.position(0) << ", " << ahit.position(1) << ", "<< ahit.position(2) << ") " << endmsg;
debug() << " vol_id : " << vol_id << endmsg;
debug() << " placment pos : " << vol_ctx->volumePlacement().position() << endmsg;
const auto is = m_surfaces.find(vol_id);
if (is == m_surfaces.end()) {
debug() << " vol_id (" << vol_id << ") not found in m_surfaces." <<endmsg;
continue;
}
const Acts::Surface* surface = is->second;
debug() << " surface center : " << surface->center(Acts::GeometryContext()) << endmsg;
// transform global position into local coordinates
Acts::Vector2D pos(0, 0);
// geometry context contains nothing here
pos = surface->globalToLocal(Acts::GeometryContext(), {ahit.position(0), ahit.position(1), ahit.position(2)}, {0, 0, 0}).value();//, pos);
//// smear truth to create local measurement
Acts::BoundVector loc = Acts::BoundVector::Zero();
loc[Acts::eBoundLoc0] = pos[0] ;//+ m_cfg.sigmaLoc0 * stdNormal(rng);
loc[Acts::eBoundLoc0] = pos[1] ;//+ m_cfg.sigmaLoc1 * stdNormal(rng);
debug() << "loc : (" << loc[0] << ", " << loc[1] << ")" << endmsg;
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// create source link at the end of the container
//auto it = source_links->emplace_hint(source_links->end(), *surface, hit, 2, loc, cov);
auto it = source_links->emplace_hint(source_links->end(), *surface, 2, loc, cov);
// ensure hits and links share the same order to prevent ugly surprises
if (std::next(it) != source_links->end()) {
error() << "The hit ordering broke. Run for your life." << endmsg;
return StatusCode::FAILURE;
}
//std::array<double,3> posarr; pos.GetCoordinates(posarr);
//std::array<double,3> dimarr; dim.GetCoordinates(posarr);
//eic::TrackerHit hit;
//eic::TrackerHit hit((long long)ahit.cellID0(), (long long)ahit.cellID(), (long long)ahit.time(),
// (float)ahit.charge() / 10000.0, (float)0.0, {{pos.x(), pos.y(),pos.z()}},{{dim[0],dim[1],0.0}});
//rec_hits->push_back(hit);
}
return StatusCode::SUCCESS;
}
};
DECLARE_COMPONENT(TrackerSourceLinker)
} // namespace Jug::reco
//HitSmearing::HitSmearing(const Config& cfg, Acts::Logging::Level lvl)
// : BareAlgorithm("HitSmearing", lvl), m_cfg(cfg) {
// if (m_cfg.inputSimulatedHits.empty()) {
// throw std::invalid_argument("Missing input simulated hits collection");
// }
// if (m_cfg.outputSourceLinks.empty()) {
// throw std::invalid_argument("Missing output source links collection");
// }
// if ((m_cfg.sigmaLoc0 < 0) or (m_cfg.sigmaLoc1 < 0)) {
// throw std::invalid_argument("Invalid resolution setting");
// }
// if (not m_cfg.trackingGeometry) {
// throw std::invalid_argument("Missing tracking geometry");
// }
// if (!m_cfg.randomNumbers) {
// throw std::invalid_argument("Missing random numbers tool");
// }
// // fill the surface map to allow lookup by geometry id only
// m_cfg.trackingGeometry->visitSurfaces([this](const Acts::Surface* surface) {
// // for now we just require a valid surface
// if (not surface) {
// return;
// }
// this->m_surfaces.insert_or_assign(surface->associatedDetectorElement()->identifier(), surface);
// });
// }
//}
//ProcessCode HitSmearing::execute(const AlgorithmContext& ctx) const {
// // setup input and output containers
// const auto& hits =
// ctx.eventStore.get<SimHitContainer>(m_cfg.inputSimulatedHits);
// SimSourceLinkContainer sourceLinks;
// sourceLinks.reserve(hits.size());
//
// // setup random number generator
// auto rng = m_cfg.randomNumbers->spawnGenerator(ctx);
// std::normal_distribution<double> stdNormal(0.0, 1.0);
//
// // setup local covariance
// // TODO add support for per volume/layer/module settings
// Acts::BoundMatrix cov = Acts::BoundMatrix::Zero();
// cov(Acts::eLOC_0, Acts::eLOC_0) = m_cfg.sigmaLoc0 * m_cfg.sigmaLoc0;
// cov(Acts::eLOC_1, Acts::eLOC_1) = m_cfg.sigmaLoc1 * m_cfg.sigmaLoc1;
//
// for (auto&& [moduleGeoId, moduleHits] : groupByModule(hits)) {
// // check if we should create hits for this surface
// const auto is = m_surfaces.find(moduleGeoId);
// if (is == m_surfaces.end()) {
// continue;
// }
//
// // smear all truth hits for this module
// const Acts::Surface* surface = is->second;
// for (const auto& hit : moduleHits) {
// // transform global position into local coordinates
// Acts::Vector2D pos(0, 0);
// surface->globalToLocal(ctx.geoContext, hit.position(),
// hit.unitDirection(), pos);
//
// // smear truth to create local measurement
// Acts::BoundVector loc = Acts::BoundVector::Zero();
// loc[Acts::eLOC_0] = pos[0] + m_cfg.sigmaLoc0 * stdNormal(rng);
// loc[Acts::eLOC_1] = pos[1] + m_cfg.sigmaLoc1 * stdNormal(rng);
//
// // create source link at the end of the container
// auto it = sourceLinks.emplace_hint(sourceLinks.end(), *surface, hit, 2,
// loc, cov);
// // ensure hits and links share the same order to prevent ugly surprises
// if (std::next(it) != sourceLinks.end()) {
// ACTS_FATAL("The hit ordering broke. Run for your life.");
// return ProcessCode::ABORT;
// }
// }
// }
//
// ctx.eventStore.add(m_cfg.outputSourceLinks, std::move(sourceLinks));
// return ProcessCode::SUCCESS;
//}