//////////////////////////////////////////////////////////////////////////////
#include <TMath.h>
+#include <TMatrixD.h>
#include <TMatrixDSym.h>
#include "AliTrackPointArray.h"
ClassImp(AliTrackPointArray)
//______________________________________________________________________________
-AliTrackPointArray::AliTrackPointArray()
+AliTrackPointArray::AliTrackPointArray() :
+ TObject(),
+ fNPoints(0),
+ fX(0),
+ fY(0),
+ fZ(0),
+ fSize(0),
+ fCov(0),
+ fVolumeID(0)
{
- fNPoints = fSize = 0;
- fX = fY = fZ = 0;
- fVolumeID = 0;
- fCov = 0;
}
//______________________________________________________________________________
AliTrackPointArray::AliTrackPointArray(Int_t npoints):
- fNPoints(npoints)
+ TObject(),
+ fNPoints(npoints),
+ fX(new Float_t[npoints]),
+ fY(new Float_t[npoints]),
+ fZ(new Float_t[npoints]),
+ fSize(6*npoints),
+ fCov(new Float_t[fSize]),
+ fVolumeID(new UShort_t[npoints])
{
// Constructor
//
- fSize = 6*npoints;
- fX = new Float_t[npoints];
- fY = new Float_t[npoints];
- fZ = new Float_t[npoints];
- fVolumeID = new UShort_t[npoints];
- fCov = new Float_t[fSize];
}
//______________________________________________________________________________
AliTrackPointArray::AliTrackPointArray(const AliTrackPointArray &array):
- TObject(array)
+ TObject(array),
+ fNPoints(array.fNPoints),
+ fX(new Float_t[fNPoints]),
+ fY(new Float_t[fNPoints]),
+ fZ(new Float_t[fNPoints]),
+ fSize(array.fSize),
+ fCov(new Float_t[fSize]),
+ fVolumeID(new UShort_t[fNPoints])
{
// Copy constructor
//
- fNPoints = array.fNPoints;
- fSize = array.fSize;
- fX = new Float_t[fNPoints];
- fY = new Float_t[fNPoints];
- fZ = new Float_t[fNPoints];
- fVolumeID = new UShort_t[fNPoints];
- fCov = new Float_t[fSize];
memcpy(fX,array.fX,fNPoints*sizeof(Float_t));
memcpy(fY,array.fY,fNPoints*sizeof(Float_t));
memcpy(fZ,array.fZ,fNPoints*sizeof(Float_t));
return kTRUE;
}
+
//______________________________________________________________________________
Bool_t AliTrackPointArray::GetPoint(AliTrackPoint &p, Int_t i) const
{
ClassImp(AliTrackPoint)
//______________________________________________________________________________
-AliTrackPoint::AliTrackPoint()
+AliTrackPoint::AliTrackPoint() :
+ TObject(),
+ fX(0),
+ fY(0),
+ fZ(0),
+ fVolumeID(0)
{
// Default constructor
//
- fX = fY = fZ = 0;
- fVolumeID = 0;
memset(fCov,0,6*sizeof(Float_t));
}
//______________________________________________________________________________
-AliTrackPoint::AliTrackPoint(Float_t x, Float_t y, Float_t z, const Float_t *cov, UShort_t volid)
+AliTrackPoint::AliTrackPoint(Float_t x, Float_t y, Float_t z, const Float_t *cov, UShort_t volid) :
+ TObject(),
+ fX(0),
+ fY(0),
+ fZ(0),
+ fVolumeID(0)
{
// Constructor
//
}
//______________________________________________________________________________
-AliTrackPoint::AliTrackPoint(const Float_t *xyz, const Float_t *cov, UShort_t volid)
+AliTrackPoint::AliTrackPoint(const Float_t *xyz, const Float_t *cov, UShort_t volid) :
+ TObject(),
+ fX(0),
+ fY(0),
+ fZ(0),
+ fVolumeID(0)
{
// Constructor
//
//______________________________________________________________________________
AliTrackPoint::AliTrackPoint(const AliTrackPoint &p):
- TObject(p)
+ TObject(p),
+ fX(0),
+ fY(0),
+ fZ(0),
+ fVolumeID(0)
{
// Copy constructor
//
return res;
}
+//_____________________________________________________________________________
+Bool_t AliTrackPoint::GetPCA(const AliTrackPoint &p, AliTrackPoint &out) const
+{
+ //
+ // Get the intersection point between this point and
+ // the point "p" belongs to.
+ // The result is stored as a point 'out'
+ // return kFALSE in case of failure.
+ out.SetXYZ(0,0,0);
+
+ TMatrixD t(3,1);
+ t(0,0)=GetX();
+ t(1,0)=GetY();
+ t(2,0)=GetZ();
+
+ TMatrixDSym tC(3);
+ {
+ const Float_t *cv=GetCov();
+ tC(0,0)=cv[0]; tC(0,1)=cv[1]; tC(0,2)=cv[2];
+ tC(1,0)=cv[1]; tC(1,1)=cv[3]; tC(1,2)=cv[4];
+ tC(2,0)=cv[2]; tC(2,1)=cv[4]; tC(2,2)=cv[5];
+ }
+
+ TMatrixD m(3,1);
+ m(0,0)=p.GetX();
+ m(1,0)=p.GetY();
+ m(2,0)=p.GetZ();
+
+ TMatrixDSym mC(3);
+ {
+ const Float_t *cv=p.GetCov();
+ mC(0,0)=cv[0]; mC(0,1)=cv[1]; mC(0,2)=cv[2];
+ mC(1,0)=cv[1]; mC(1,1)=cv[3]; mC(1,2)=cv[4];
+ mC(2,0)=cv[2]; mC(2,1)=cv[4]; mC(2,2)=cv[5];
+ }
+
+ TMatrixDSym tmW(tC);
+ tmW+=mC;
+ tmW.Invert();
+ if (!tmW.IsValid()) return kFALSE;
+
+ TMatrixD mW(tC,TMatrixD::kMult,tmW);
+ TMatrixD tW(mC,TMatrixD::kMult,tmW);
+
+ TMatrixD mi(mW,TMatrixD::kMult,m);
+ TMatrixD ti(tW,TMatrixD::kMult,t);
+ ti+=mi;
+
+ TMatrixD iC(tC,TMatrixD::kMult,tmW);
+ iC*=mC;
+
+ out.SetXYZ(ti(0,0),ti(1,0),ti(2,0));
+ UShort_t id=p.GetVolumeID();
+ out.SetVolumeID(id);
+
+ return kTRUE;
+}
+
//______________________________________________________________________________
Float_t AliTrackPoint::GetAngle() const
{
printf("Z = %12.6f Tz = %12.6f%12.6f%12.6f\n", fZ, fCov[2], fCov[4], fCov[5]);
}
+
+
+//________________________________
+void AliTrackPoint::SetAlignCovMatrix(const TMatrixDSym alignparmtrx){
+ // Add the uncertainty on the cluster position due to alignment
+ // (using the 6x6 AliAlignObj Cov. Matrix alignparmtrx) to the already
+ // present Cov. Matrix
+
+ TMatrixDSym cov(3);
+ TMatrixD coval(3,3);
+ TMatrixD jacob(3,6);
+ Float_t newcov[6];
+
+ cov(0,0)=fCov[0];
+ cov(1,0)=cov(0,1)=fCov[1];
+ cov(2,0)=cov(0,2)=fCov[2];
+ cov(1,1)=fCov[3];
+ cov(2,1)=cov(1,2)=fCov[4];
+ cov(2,2)=fCov[5];
+
+ jacob(0,0) = 1; jacob(1,0) = 0; jacob(2,0) = 0;
+ jacob(0,1) = 0; jacob(1,1) = 1; jacob(2,1) = 0;
+ jacob(0,2) = 0; jacob(1,2) = 0; jacob(2,2) = 1;
+ jacob(0,3) = 0; jacob(1,3) =-fZ; jacob(2,3) = fY;
+ jacob(0,4) = fZ; jacob(1,4) = 0; jacob(2,4) =-fX;
+ jacob(0,5) = fY; jacob(1,5) = fX; jacob(2,5) = 0;
+
+ TMatrixD jacobT=jacob.T();jacob.T();
+
+ coval=jacob*alignparmtrx*jacobT+cov;
+
+
+ newcov[0]=coval(0,0);
+ newcov[1]=coval(1,0);
+ newcov[2]=coval(2,0);
+ newcov[3]=coval(1,1);
+ newcov[4]=coval(2,1);
+ newcov[5]=coval(2,2);
+
+ SetXYZ(fX,fY,fZ,newcov);
+
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff