int PHG4TPCClusterizer::process_event(PHCompositeNode* topNode) {
PHNodeIterator iter(topNode);
PHCompositeNode* dstNode =
static_cast<PHCompositeNode*>(iter.findFirst("PHCompositeNode", "DST"));
if (!dstNode) {
cout << PHWHERE << "DST Node missing, doing nothing." << endl;
return Fun4AllReturnCodes::ABORTRUN;
}
PHNodeIterator iter_dst(dstNode);
SvtxHitMap* hits = findNode::getClass<SvtxHitMap>(dstNode, "SvtxHitMap");
if (!hits) {
cout << PHWHERE << "ERROR: Can't find node SvtxHitMap" << endl;
return Fun4AllReturnCodes::ABORTRUN;
}
PHCompositeNode* svxNode =
dynamic_cast<PHCompositeNode*>(iter_dst.findFirst("PHCompositeNode", "SVTX"));
if (!svxNode) {
svxNode = new PHCompositeNode("SVTX");
dstNode->addNode(svxNode);
}
SvtxClusterMap* svxclusters =
findNode::getClass<SvtxClusterMap>(dstNode, "SvtxClusterMap");
if (!svxclusters) {
svxclusters = new SvtxClusterMap_v1();
PHIODataNode<PHObject>* SvtxClusterMapNode =
new PHIODataNode<PHObject>(svxclusters, "SvtxClusterMap", "PHObject");
svxNode->addNode(SvtxClusterMapNode);
}
PHG4CylinderCellGeomContainer* geom_container =
findNode::getClass<PHG4CylinderCellGeomContainer>(topNode,"CYLINDERCELLGEOM_SVTX");
if (!geom_container) return Fun4AllReturnCodes::ABORTRUN;
PHG4CylinderCellContainer* cells = findNode::getClass<PHG4CylinderCellContainer>(dstNode,"G4CELL_SVTX");
if (!cells) return Fun4AllReturnCodes::ABORTRUN;
std::vector<std::vector<const SvtxHit*> > layer_sorted;
PHG4CylinderCellGeomContainer::ConstRange layerrange = geom_container->get_begin_end();
for (PHG4CylinderCellGeomContainer::ConstIterator layeriter = layerrange.first;
layeriter != layerrange.second;
++layeriter) {
// We only need TPC layers here, so skip the layers below _min_layer
// This if statement is needed because although the maps ladder layers are not included in the cylinder cell geom container,
// the cylinder Svx layers are, so they have to be dropped here if they are present
if( (unsigned int) layeriter->second->get_layer() < _min_layer)
continue;
layer_sorted.push_back(std::vector<const SvtxHit*>());
}
for (SvtxHitMap::Iter iter = hits->begin(); iter != hits->end(); ++iter) {
SvtxHit* hit = iter->second;
if( (unsigned int) hit->get_layer() < _min_layer)
continue;
layer_sorted[hit->get_layer() - _min_layer].push_back(hit);
}
for (PHG4CylinderCellGeomContainer::ConstIterator layeriter =
layerrange.first;
layeriter != layerrange.second; ++layeriter) {
unsigned int layer = (unsigned int)layeriter->second->get_layer();
// exit on the MAPS layers...
// needed in case cylinder svtx layers are present
if (layer < _min_layer) continue;
if (layer > _max_layer) continue;
PHG4CylinderCellGeom* geo = geom_container->GetLayerCellGeom(layer);
const int nphibins = layeriter->second->get_phibins();
const int nzbins = layeriter->second->get_zbins();
nhits.clear();
nhits.assign(nzbins, 0);
amps.clear();
amps.assign(nphibins * nzbins, 0.);
cellids.clear();
cellids.assign(nphibins * nzbins, 0);
for (unsigned int i = 0; i < layer_sorted[layer - _min_layer].size(); ++i) {
const SvtxHit* hit = layer_sorted[layer - _min_layer][i];
if (hit->get_e() <= 0.) continue;
PHG4CylinderCell* cell = cells->findCylinderCell(hit->get_cellid());
int phibin = cell->get_binphi();
int zbin = cell->get_binz();
nhits[zbin] += 1;
amps[zbin * nphibins + phibin] += hit->get_e();
cellids[zbin * nphibins + phibin] = hit->get_id();
}
int nhits_tot = 0;
for (int zbin = 0; zbin < nzbins; ++zbin) {
nhits_tot += nhits[zbin];
}
while (nhits_tot > 0) {
for (int zbin = 0; zbin < nzbins; ++zbin) {
if (nhits[zbin] <= 0) continue;
for (int phibin = 0; phibin < nphibins; ++phibin) {
if (is_local_maximum(amps, nphibins, nzbins, phibin, zbin) == false) {
continue;
}
float phi = 0.;
float z = 0.;
float e = 0.;
fit_cluster(amps, nphibins, nzbins, nhits_tot, nhits, phibin, zbin,
geo, phi, z, e);
if ((layer > 2) && (e < energy_cut)) {
continue;
}
SvtxCluster_v1 clus;
clus.set_layer(layer);
clus.set_e(e);
double radius = geo->get_radius() + 0.5*geo->get_thickness();
clus.set_position(0, radius * cos(phi));
clus.set_position(1, radius * sin(phi));
clus.set_position(2, z);
clus.insert_hit(cellids[zbin * nphibins + phibin]);
float invsqrt12 = 1.0/sqrt(12.);
TMatrixF DIM(3,3);
DIM[0][0] = 0.0;//pow(0.0*0.5*thickness,2);
DIM[0][1] = 0.0;
DIM[0][2] = 0.0;
DIM[1][0] = 0.0;
DIM[1][1] = pow(0.5*0.011,2);
DIM[1][2] = 0.0;
DIM[2][0] = 0.0;
DIM[2][1] = 0.0;
DIM[2][2] = pow(0.5*0.03,2);
TMatrixF ERR(3,3);
ERR[0][0] = 0.0;//pow(0.0*0.5*thickness*invsqrt12,2);
ERR[0][1] = 0.0;
ERR[0][2] = 0.0;
ERR[1][0] = 0.0;
ERR[1][1] = pow(0.5*0.011*invsqrt12,2);
ERR[1][2] = 0.0;
ERR[2][0] = 0.0;
ERR[2][1] = 0.0;
ERR[2][2] = pow(0.5*0.03*invsqrt12,2);
TMatrixF ROT(3,3);
ROT[0][0] = cos(phi);
ROT[0][1] = -sin(phi);
ROT[0][2] = 0.0;
ROT[1][0] = sin(phi);
ROT[1][1] = cos(phi);
ROT[1][2] = 0.0;
ROT[2][0] = 0.0;
ROT[2][1] = 0.0;
ROT[2][2] = 1.0;
TMatrixF ROT_T(3,3);
ROT_T.Transpose(ROT);
TMatrixF COVAR_DIM(3,3);
COVAR_DIM = ROT * DIM * ROT_T;
clus.set_size( 0 , 0 , COVAR_DIM[0][0] );
clus.set_size( 0 , 1 , COVAR_DIM[0][1] );
clus.set_size( 0 , 2 , COVAR_DIM[0][2] );
clus.set_size( 1 , 0 , COVAR_DIM[1][0] );
clus.set_size( 1 , 1 , COVAR_DIM[1][1] );
clus.set_size( 1 , 2 , COVAR_DIM[1][2] );
clus.set_size( 2 , 0 , COVAR_DIM[2][0] );
clus.set_size( 2 , 1 , COVAR_DIM[2][1] );
clus.set_size( 2 , 2 , COVAR_DIM[2][2] );
TMatrixF COVAR_ERR(3,3);
COVAR_ERR = ROT * ERR * ROT_T;
clus.set_error( 0 , 0 , COVAR_ERR[0][0] );
clus.set_error( 0 , 1 , COVAR_ERR[0][1] );
clus.set_error( 0 , 2 , COVAR_ERR[0][2] );
clus.set_error( 1 , 0 , COVAR_ERR[1][0] );
clus.set_error( 1 , 1 , COVAR_ERR[1][1] );
clus.set_error( 1 , 2 , COVAR_ERR[1][2] );
clus.set_error( 2 , 0 , COVAR_ERR[2][0] );
clus.set_error( 2 , 1 , COVAR_ERR[2][1] );
clus.set_error( 2 , 2 , COVAR_ERR[2][2] );
svxclusters->insert(&clus);
}
}
}
}
reset();
return Fun4AllReturnCodes::EVENT_OK;
}
