Phase2TrackerRecHits/src/Phase2StripCPEGeometric.cc

0001
0002 #include "RecoLocalTracker/Phase2TrackerRecHits/interface/Phase2StripCPEGeometric.h"
0003 #include "Geometry/CommonDetUnit/interface/PixelGeomDetUnit.h"
0004 #include "Geometry/CommonTopologies/interface/PixelTopology.h"
0005
0006 // currently (?) use Pixel classes for GeomDetUnit and Topology
0007 using Phase2TrackerGeomDetUnit = PixelGeomDetUnit;
0008 using Phase2TrackerTopology = PixelTopology;
0009
0010 Phase2StripCPEGeometric::Phase2StripCPEGeometric(edm::ParameterSet &conf) {}
0011
0012 Phase2StripCPEGeometric::LocalValues Phase2StripCPEGeometric::localParameters(const Phase2TrackerCluster1D &cluster,
0013                                                                               const GeomDetUnit &detunit) const {
0014   const Phase2TrackerGeomDetUnit &det = (const Phase2TrackerGeomDetUnit &)detunit;
0015   const Phase2TrackerTopology *topo = &det.specificTopology();
0016
0017   float pitch_x = topo->pitch().first;
0018   float pitch_y = topo->pitch().second;
0019   float ix = cluster.center();
0020   float iy = cluster.column() + 0.5;  // halfway the column
0021
0022   LocalPoint lp(topo->localX(ix), topo->localY(iy), 0);          // x, y, z
0023   LocalError le(pow(pitch_x, 2) / 12, 0, pow(pitch_y, 2) / 12);  // e2_xx, e2_xy, e2_yy
0024   return std::make_pair(lp, le);
0025 }