TrackerRecHit2D/src/BaseTrackerRecHit.cc

0001 //#define DO_THROW_UNINITIALIZED
0002 #include "DataFormats/TrackerRecHit2D/interface/BaseTrackerRecHit.h"
0003 #include "DataFormats/TrackerRecHit2D/interface/OmniClusterRef.h"
0004 #include "DataFormats/TrackingRecHit/interface/KfComponentsHolder.h"
0005 #include "DataFormats/Math/interface/ProjectMatrix.h"
0006 #include "FWCore/Utilities/interface/Exception.h"
0007
0008 namespace {
0009 #if defined(DO_THROW_UNINITIALIZED) || defined(DO_INTERNAL_CHECKS_BTR)
0010   inline void throwExceptionUninitialized(const char *where) {
0011     throw cms::Exception("BaseTrackerRecHit")
0012         << "Trying to access " << where
0013         << " for a RecHit that was read from disk, but since CMSSW_2_1_X local positions are transient.\n"
0014         << "If you want to get coarse position/error estimation from disk, please set: "
0015            "ComputeCoarseLocalPositionFromDisk = True \n "
0016         << " to the TransientTrackingRecHitBuilder you are using from "
0017            "RecoTracker/TransientTrackingRecHit/python/TTRHBuilders_cff.py";
0018   }
0019 #endif
0020   void obsolete() { throw cms::Exception("BaseTrackerRecHit") << "CLHEP is obsolete for Tracker Hits"; }
0021 }  // namespace
0022
0023 #if !defined(VI_DEBUG) && defined(DO_INTERNAL_CHECKS_BTR)
0024 void BaseTrackerRecHit::check() const {
0025   if (!hasPositionAndError())
0026     throwExceptionUninitialized("localPosition or Error");
0027 }
0028 #endif
0029
0030 bool BaseTrackerRecHit::hasPositionAndError() const {
0031   //if det is present pos&err are available as well.
0032   //    //if det() is not present (null) the hit has been read from file and not updated
0033   return det();
0034 }
0035
0036 void BaseTrackerRecHit::getKfComponents1D(KfComponentsHolder &holder) const {
0037 #if defined(DO_THROW_UNINITIALIZED)
0038   if (!hasPositionAndError())
0039     throwExceptionUninitialized("getKfComponents");
0040 #endif
0041   AlgebraicVector1 &pars = holder.params<1>();
0042   pars[0] = pos_.x();
0043
0044   AlgebraicSymMatrix11 &errs = holder.errors<1>();
0045   errs(0, 0) = err_.xx();
0046
0047   ProjectMatrix<double, 5, 1> &pf = holder.projFunc<1>();
0048   pf.index[0] = 3;
0049
0050   holder.measuredParams<1>() = AlgebraicVector1(holder.tsosLocalParameters().At(3));
0051   holder.measuredErrors<1>() = holder.tsosLocalErrors().Sub<AlgebraicSymMatrix11>(3, 3);
0052 }
0053
0054 void BaseTrackerRecHit::getKfComponents2D(KfComponentsHolder &holder) const {
0055 #if defined(DO_THROW_UNINITIALIZED)
0056   if (!hasPositionAndError())
0057     throwExceptionUninitialized("getKfComponents");
0058 #endif
0059   AlgebraicVector2 &pars = holder.params<2>();
0060   pars[0] = pos_.x();
0061   pars[1] = pos_.y();
0062
0063   AlgebraicSymMatrix22 &errs = holder.errors<2>();
0064   errs(0, 0) = err_.xx();
0065   errs(0, 1) = err_.xy();
0066   errs(1, 1) = err_.yy();
0067
0068   ProjectMatrix<double, 5, 2> &pf = holder.projFunc<2>();
0069   pf.index[0] = 3;
0070   pf.index[1] = 4;
0071
0072   holder.measuredParams<2>() = AlgebraicVector2(&holder.tsosLocalParameters().At(3), 2);
0073   holder.measuredErrors<2>() = holder.tsosLocalErrors().Sub<AlgebraicSymMatrix22>(3, 3);
0074 }
0075
0076 // obsolete (for what tracker is concerned...) interface
0077 AlgebraicVector BaseTrackerRecHit::parameters() const {
0078   obsolete();
0079   return AlgebraicVector();
0080 }
0081
0082 AlgebraicSymMatrix BaseTrackerRecHit::parametersError() const {
0083   obsolete();
0084   return AlgebraicSymMatrix();
0085 }
0086
0087 AlgebraicMatrix BaseTrackerRecHit::projectionMatrix() const {
0088   obsolete();
0089   return AlgebraicMatrix();
0090 }