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//--------------------------------------------------------------------------------------------------
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// $Id: MultiVertexFitterC.h,v 1.1 2008/11/13 16:34:28 paus Exp $
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//
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// MultiVertexFitterC class header file
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//
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// Compact version of MultiVertexFitter
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//
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//--------------------------------------------------------------------------------------------------
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#ifndef MITCOMMON_VERTEXFIT_MULTIVERTEXFITTERC_H
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#define MITCOMMON_VERTEXFIT_MULTIVERTEXFITTERC_H
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#include <string>
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#include <iostream>
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#include <Rtypes.h>
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#include <TVectorD.h>
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#include <TMatrixDSym.h>
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#include <CLHEP/Vector/LorentzVector.h>
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#include <CLHEP/Vector/ThreeVector.h>
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#include <CLHEP/Matrix/SymMatrix.h>
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#include <CLHEP/Matrix/Vector.h>
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#include "MitCommon/DataFormats/interface/Types.h"
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#include "MitCommon/Ctvmft/interface/cdimensions.hh"
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//-------------------------------------------------------------------------------------------------
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// Fortran routines to get address of the start of the ctvmq and ctvmfr common blocks
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//-------------------------------------------------------------------------------------------------
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extern "C" {
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int cctvmq_address_ (void);
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int cctvmfr_address_(void);
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int cfiddle_address_(void);
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int ctrkprm_address_(void);
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}
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namespace mithep {
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class MultiVertexFitterC {
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public:
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//--------------------------------------------------------------------------------------------
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// Enumerations
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//--------------------------------------------------------------------------------------------
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enum vertexNumber { PRIMARY_VERTEX,VERTEX_1,VERTEX_2,VERTEX_3,VERTEX_4,VERTEX_5,VERTEX_6 };
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enum vertexIndex { X_INDEX=0, Y_INDEX, Z_INDEX, P1_INDEX, P2_INDEX };
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enum trackIndex { CURVATURE_INDEX=0, PHI_INDEX, COTTH_INDEX };
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//--------------------------------------------------------------------------------------------
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// *structors
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//--------------------------------------------------------------------------------------------
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MultiVertexFitterC();
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~MultiVertexFitterC() {}
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//--------------------------------------------------------------------------------------------
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// Fundamental funtions
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//--------------------------------------------------------------------------------------------
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void init (double bfield = 3.8);
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void setChisqMax (const float chisqmx);
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//--------------------------------------------------------------------------------------------
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// CMS parameter ordering for the vector/matrix, which is assumed here:
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//
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// qoverp, cotTheta, phi0, d0, z0;
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// mapping to CDF is therefore { 1, 0*, 4, 3, 2 }
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//
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// Note that the radius of curvature (in cm) is then:
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//
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// Rc = cos(theta) / [ 0.0029979.... * (q/p) * B ],
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//
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// where B is the magnetic field in Tesla and tht is the angle between the field and the
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// direction. With p * cos(theta) = pT it follows:
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//
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// Rc = pT / [ 0.0029979.... * q * B ],
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// fullCurvature = 1 / Rc = 0.0029979 * q * B / pT = - 0.0029979 * B / pT.
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//
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//--------------------------------------------------------------------------------------------
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//--------------------------------------------------------------------------------------------
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// Parameter ordering for the vector/matrix, assumed here:
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//
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// cotTheta, curvature, z0, d0, phi0;
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//
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// And also: curvature = -0.5 * CurvConst * BFieldT / pT (strictly speaking: half curvature)
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// CurvConst = 0.0029979, BField in Tesla
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//
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// Incidentally this is the ordering used in the CDF experiment.
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//--------------------------------------------------------------------------------------------
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bool addTrack (const HepVector &pars, const HepSymMatrix &cov, int trackid,
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float mass, vertexNumber jv);
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bool addTrack (const TVectorD &pars, const TMatrixDSym &cov, int trackid,
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double mass, vertexNumber jv);
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bool vertexPoint_2d (vertexNumber jv1, vertexNumber jv2);
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bool vertexPoint_3d (vertexNumber jv1, vertexNumber jv2);
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bool vertexPoint_1track (vertexNumber jv1, vertexNumber jv2);
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bool vertexPoint_0track (vertexNumber jv1, vertexNumber jv2);
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bool conversion_2d (vertexNumber jv);
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bool conversion_3d (vertexNumber jv);
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bool massConstrain (int ntrk, const int trkIds[], float mass);
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void setPrimaryVertex (float xv, float yv, float zv);
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void setPrimaryVertex (Hep3Vector pv);
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bool setPrimaryVertexError(const HepSymMatrix &xverr);
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void setPrimaryVertexError(const float xverr[3][3]);
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bool fit ();
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void print (std::ostream& os) const;
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void print () const;
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void printErr (std::ostream& os) const;
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void printErr () const;
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void restoreFromCommons ();
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// -------------------------------------------------------------------------------------------
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// Turn ON this option only when fitting the primary with no additional constraints.
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// The routineis protected and will not function if those options are selected as well as the
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// beamline constraint. In case this option is chosen the fit will calculate a result also
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// with just one track in input.
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//
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// In order to enable this option the user must do the following: Fit the primary vertex as
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// VERTEX_1 (without any other vertices). Enable beamlineConstraint by setting the pointing
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// constraint variable vtxpnt[0][0] to -100 (no pointing constraints when <0) Note that index
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// 0,0 corresponds to index 1,1 in fortran Provide the beamline parameters:
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//
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// --> assume xv = xb + xzbslope*z,
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// yv = yb + yzbslope*z, where (xv, yv) is the transverse
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// beam position at z, (xb, yb) is the transverse beam position at z = 0
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// and (xzbslope, yzbslope) are the slopes of the beamline
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// --> set primary vertex at z=0 (xb, yb, 0)
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// --> set the diagonal elements of the primary vertex error matrix to the
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// sigma**2 of beam spread in x, y and z:
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// xverr[1][1] = (~30 - 50 um)**2
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// xverr[2][2] = (~30 - 50 um)**2
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// xverr[3][3] = (~30 cm) **2
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// All other elements should be 0
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// For help email: Joao Guimaraes guima@huhepl.harvard.edu, Franco Bedeschi bed@fnal.gov
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// See more information in the ctvmft.f
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// -------------------------------------------------------------------------------------------
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bool beamlineConstraint(float xb, float yb, HepSymMatrix berr,float xzbslope,float yzbslope);
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bool beamlineConstraint(Hep3Vector pv, HepSymMatrix berr, float xzbslope, float yzbslope);
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//--------------------------------------------------------------------------------------------
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// Accessors
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//--------------------------------------------------------------------------------------------
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void setBField (double bField) { _bField = bField; }
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double bField () const { return _bField; }
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void setExcuse ();
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void setNoExcuse();
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std::string expert () const; // name/email of MultiVertexFitter expert
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int status () const; // return status of fit
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// overall fit quality paramters
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int ndof () const; // number of degrees of freedom
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float prob () const; // return probability of chi-square
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float chisq () const; // return chi-square of fit
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float chisq (const int trkId) const;
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float chisq_rphi () const;
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float chisq_rphi (const int trkId) const;
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float chisq_z () const;
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float chisq_z (const int trkId) const;
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float chisq_rphiz() const;
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float chisq_rphiz(const int trkId) const;
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// return fit track four momentum
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//HepLorentzVector getTrackP4 (const int trkId) const;
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FourVector getTrackP4 (const int trkId) const;
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//// return fit track parameters
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//Helix getHelix (const int trkId) const;
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// return fit mass and get error
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float getMass (int ntrk, const int trkIds[], float& dmass) const;
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// return decay length
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float getDecayLength (vertexNumber nv, vertexNumber mv, const Hep3Vector& dir,
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float& dlerr) const;
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float getDecayLength (vertexNumber nv, vertexNumber mv, const ThreeVector& dir,
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float& dlerr) const;
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float getZDecayLength (vertexNumber nv, vertexNumber mv,
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const Hep3Vector& dir, float& dlerr) const;
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float getZDecayLength (vertexNumber nv, vertexNumber mv,
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const ThreeVector& dir, float& dlerr) const;
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float getImpactPar (vertexNumber prdV, vertexNumber dcyV,
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const Hep3Vector &v, float &dxyerr) const;
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float getImpactPar (vertexNumber prdV, vertexNumber dcyV,
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const ThreeVector &v, float &dxyerr) const;
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float get_dr (vertexNumber nv, vertexNumber mv, float& drerr) const;
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float get_dz (vertexNumber nv, vertexNumber mv, float& dzerr) const;
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// return location of vertex
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Hep3Vector getVertexHep (vertexNumber nv) const;
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ThreeVector getVertex (vertexNumber nv) const;
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// return error matrix element.
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ThreeSymMatrix getErrorMatrix (vertexNumber nv) const;
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double getErrorMatrixHep(int j, int k) const;
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HepSymMatrix getErrorMatrixHep(vertexNumber nv) const;
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HepSymMatrix getErrorMatrixHep(const int trkId) const;
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void getPosMomErr (HepMatrix& errors) const;
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int vOff (vertexNumber jv) const;
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int tOff (const int trkId) const;
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int pOff (int lp) const;
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int cOff (int lc) const;
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int mOff () const;
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double VMat (int i, int j) const;
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float getPtError (const int trkId) const;
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MultiVertexFitterC::vertexNumber
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allocateVertexNumber();
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void resetAllocatedVertexNumber();
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// Accessors for getting information relative to ijk errors.
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// Get the error code from the three ijk indexes into the argument variables
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void getIJKErr(int& err0, int& err1, int& err2) const;
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// Return each error code from the three ijk indexes
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int getIJKErr0() const;
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int getIJKErr1() const;
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int getIJKErr2() const;
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// Get the track-id of the track causing a fatal error as indicated
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// by the corresponding ijk error
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int getErrTrackId() const;
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// Set new track reference point
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void setTrackReferencePoint(const ThreeVector &ref);
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//--------------------------------------------------------------------------------------------
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// Overload operators
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//--------------------------------------------------------------------------------------------
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friend std::ostream& operator << (std::ostream& os, const MultiVertexFitterC& vfit);
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protected:
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std::string _expert; // string: name and email of expert
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int _stat; // status returned from fit
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static const int _maxvtx = CCTVMFT_MAXVTX; // Maximum number of vertices
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static const int _maxmcn = CCTVMFT_MAXMCN; // Maximum number of mass constraints
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static const int _maxtrk = CCTVMFT_MAXTRK; // Maximum number of tracks
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static const int _maxitr = CCTVMFT_MAXITR; // Maximum number of iteration steps
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static const int _maxdim = 5*(CCTVMFT_MAXVTX+1)+3*CCTVMFT_MAXTRK+CCTVMFT_MAXMCN;
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// FIDDLE must have access to protected data like _maxvtx, etc. It must therefore be a
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// friend
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struct FIDDLE;
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friend struct FIDDLE;
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struct FIDDLE {
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int excuse;
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float chisqmax;
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};
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// CTVMQ must have access to MultiVertexFitterC's (other) protected data like _maxvtx, etc.
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// It must therefore be a friend.
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struct CTVMQ;
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friend struct CTVMQ;
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struct CTVMQ {
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int runnum;
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int trgnum;
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int iter;
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int ntscut;
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int nvertx;
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int nmassc;
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int ntrack;
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int trkvtx[_maxvtx][_maxtrk]; // Logical in FORTRAN, but integer here to get the size
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int trkmcn[_maxmcn][_maxtrk]; // Logical in FORTRAN, but integer here to get the size
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int vtxpnt[2][_maxvtx];
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float cmass [_maxmcn];
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int cvtx [_maxvtx];
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int vtxvtx[_maxvtx][_maxvtx]; // Logical in FORTRAN, but integer here to get the size
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char tkbank[_maxtrk][4];
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int list [_maxtrk];
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float tmass [_maxtrk];
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int matdim;
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int tkerr [_maxtrk];
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int ndof;
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float chisqr[_maxitr+1];
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float chit [_maxtrk];
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float chiv [_maxvtx+1];
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float chim [_maxmcn];
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float xyzpv0[3];
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float exyzpv[3][3];
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float xzslope;
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float yzslope;
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float xyzvrt[_maxvtx+1][3];
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float dxyzpv[3];
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float par [_maxtrk][5];
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float g [_maxtrk][5][5];
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float trkp4 [6][_maxtrk];
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float vtxp4 [_maxvtx][4];
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float mcnp4 [_maxmcn][4];
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float dda [8][_maxtrk];
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int voff [_maxvtx];
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int toff [_maxtrk];
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int poff [_maxvtx];
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int coff [_maxvtx];
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int moff;
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float par0 [_maxtrk][5];
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float pardif[_maxtrk][5];
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float fmcdif[_maxmcn];
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float pcon [2][_maxvtx];
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float sang [2][_maxvtx];
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float drmax;
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float rvmax;
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float dzmax;
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float trnmax;
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float dsmin;
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int ijkerr[3];
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float pscale;
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};
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// CTVMFR must have access to MultiVertexFitterC's (other) protected data like _maxdim, etc.
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// It must therefore be a friend.
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struct CTVMFR;
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friend struct CTVMFR;
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struct CTVMFR {
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double vmat[_maxdim+1][_maxdim];
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};
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// TRKPRM must have access to MultiVertexFitterC's (other) protected data like _maxtrk, etc.
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// It must therefore be a friend.
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struct TRKPRM;
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friend struct TRKPRM;
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struct TRKPRM {
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float trhelix[_maxtrk][5];
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float trem [_maxtrk][5][5];
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};
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CTVMQ _ctvmq;
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CTVMQ* _ctvmq_com;
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CTVMFR _ctvmfr;
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CTVMFR* _ctvmfr_com;
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FIDDLE _fiddle;
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FIDDLE* _fiddle_com;
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TRKPRM _trkprm;
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TRKPRM* _trkprm_com;
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//--------------------------------------------------------------------------------------------
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// Private functions used by class
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//--------------------------------------------------------------------------------------------
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private:
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// Moves reference point of track parameters and errors to _referencePoint
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//void moveReferencePoint(HepVector &v, HepSymMatrix &m);
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// Moves reference point of track parameters and errors to _referencePoint. Additionally
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//checks if track has already been moved by examining it's "derived" link
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//void moveReferencePoint(const CdfTrack *trk, HepVector &v, HepSymMatrix &m);
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//--------------------------------------------------------------------------------------------
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// Data members of class
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//--------------------------------------------------------------------------------------------
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double _bField; // B field in Tesla
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int _currentAllocatedVertexNumber; // index to enum vertexNumber
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ThreeVector _referencePoint; // reference point of track
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Hep3Vector _primaryVertex; // primary vertex relative to _referencePoint
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Hep3Vector _cdfPrimaryVertex; // primary vertex in CDF coordinate system
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bool _extrapolateTrackErrors; // extrapolate track errors to _referencePoint
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};
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}
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//--------------------------------------------------------------------------------------------------
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// Inline functions
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//--------------------------------------------------------------------------------------------------
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inline
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std::ostream& operator << (std::ostream& os, const mithep::MultiVertexFitterC& vfit)
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{
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vfit.print(os);
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return (os);
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}
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//--------------------------------------------------------------------------------------------------
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inline
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void mithep::MultiVertexFitterC::setExcuse()
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{
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_fiddle.excuse = 1; // the default
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}
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//--------------------------------------------------------------------------------------------------
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inline
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void mithep::MultiVertexFitterC::setNoExcuse()
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{
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_fiddle.excuse = 0; // crash on input error
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}
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//--------------------------------------------------------------------------------------------------
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inline
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void mithep::MultiVertexFitterC::setChisqMax(const float chisqmx)
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{
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_fiddle.chisqmax = chisqmx;
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}
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#endif
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