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AliXXXLayer.cxx
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AliXXXLayer.cxx
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#include <TMath.h>
#include "AliXXXLayer.h"
#include "AliXXXAux.h"
#include "AliITSRecPoint.h"
#include "AliITSgeomTGeo.h"
#include "AliVertex.h"
#include <TRandom.h>
#include <TStopwatch.h>
#include <TString.h>
using namespace AliXXXAux;
//_________________________________________________________________
AliXXXLayer::AliXXXLayer() :
fClusters(0)
,fLrID(-1)
,fVIDOffset(0)
,fNClusters(0)
,fZMin(0)
,fZMax(0)
,fDZInv(-1)
,fDPhiInv(-1)
,fNZBins(20)
,fNPhiBins(20)
,fQueryZBmin(-1)
,fQueryZBmax(-1)
,fQueryPhiBmin(-1)
,fQueryPhiBmax(-1)
,fBins(0)
,fOccBins(0)
,fNOccBins(0)
,fNFoundClusters(0)
,fFoundClusterIterator(0)
,fFoundBinIterator(0)
,fFoundBins(0)
,fSortedClInfo(0)
{
// def. c-tor
}
//_________________________________________________________________
AliXXXLayer::AliXXXLayer(int id, float zspan,int nzbins,int nphibins, int buffer) :
fClusters(0)
,fLrID(id)
,fVIDOffset((id+1)*2048)
,fNClusters(0)
,fZMin(-zspan)
,fZMax(zspan)
,fDZInv(-1)
,fDPhiInv(-1)
,fNZBins(nzbins)
,fNPhiBins(nphibins)
,fQueryZBmin(-1)
,fQueryZBmax(-1)
,fQueryPhiBmin(-1)
,fQueryPhiBmax(-1)
,fBins(0)
,fOccBins(0)
,fNOccBins(0)
,fNFoundClusters(0)
,fFoundClusterIterator(0)
,fFoundBinIterator(0)
,fFoundBins(0)
,fSortedClInfo(0)
{
// c-tor
Init(buffer);
}
//_________________________________________________________________
AliXXXLayer::~AliXXXLayer()
{
// d-tor
delete[] fBins;
delete[] fOccBins;
delete fClusters;
}
//_________________________________________________________________
void AliXXXLayer::Init(int buffer)
{
if (fClusters) {
printf("Already initialized\n");
return;
}
if (fNZBins<1) fNZBins = 2;
if (fNPhiBins<1) fNPhiBins = 1;
fDZInv = fNZBins/(fZMax-fZMin);
fDPhiInv = fNPhiBins/TMath::TwoPi();
//
fBins = new ClBinInfo_t[fNZBins*fNPhiBins];
fOccBins = new int[fNZBins*fNPhiBins];
if (buffer<100) buffer = 100;
fClusters = new TObjArray(buffer);
fSortedClInfo.reserve(buffer);
//
// prepare detectors info
int id1 = fLrID+1;
Int_t nlad=AliITSgeomTGeo::GetNLadders(id1);
Int_t ndet=AliITSgeomTGeo::GetNDetectors(id1);
int detID = 0;
for (Int_t j=1; j<nlad+1; j++) {
for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
ITSDetInfo_t det;
det.index = detID++;
//
TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(id1,j,k,m);
const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(id1,j,k);
m.Multiply(tm);
Double_t txyz[3] = {0.}, xyz[3] = {0.};
m.LocalToMaster(txyz,xyz);
det.xTF = TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
det.phiTF = TMath::ATan2(xyz[1],xyz[0]);
//BringTo02Pi(det.phiTF);
det.sinTF = TMath::Sin(det.phiTF);
det.cosTF = TMath::Cos(det.phiTF);
//
// compute the real radius (with misalignment)
TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(id1,j,k)));
mmisal.Multiply(tm);
xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
mmisal.LocalToMaster(txyz,xyz);
det.xTFmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
//
fDetectors.push_back(det);
} // end loop on detectors
} // end loop on ladders
}
//_________________________________________________________________
void AliXXXLayer::SortClusters(const AliVertex* vtx)
{
// sort clusters and build fast lookup table
//
ClearSortedInfo();
fSortedClInfo.reserve(fNClusters);
//
ClsInfo_t cl;
for (int icl=fNClusters;icl--;) {
AliITSRecPoint* cluster = (AliITSRecPoint*)fClusters->UncheckedAt(icl);
cluster->GetGlobalXYZ( (float*)&cl );
//
if (vtx) { // phi and r will be computed wrt vertex
cl.x -= vtx->GetX();
cl.y -= vtx->GetY();
}
//
cl.r = TMath::Sqrt(cl.x*cl.x + cl.y*cl.y);
cl.phi = TMath::ATan2(cl.y,cl.x);
BringTo02Pi(cl.phi);
cl.index = icl;
cl.zphibin = GetBinIndex(GetZBin(cl.z),GetPhiBin(cl.phi));
cl.detid = cluster->GetVolumeId() - fVIDOffset;
//
fSortedClInfo.push_back( cl );
//
}
sort(fSortedClInfo.begin(), fSortedClInfo.end()); // sort in phi, z
//
// fill cells in phi,z
int currBin = -1;
for (int icl=0;icl<fNClusters;icl++) {
ClsInfo_t &t = fSortedClInfo[icl];
if (t.zphibin>currBin) { // register new occupied bin
currBin = t.zphibin;
fBins[currBin].first = icl;
fBins[currBin].index = fNOccBins;
fOccBins[fNOccBins++] = currBin;
}
fBins[currBin].ncl++;
}
// Print("clb"); //RS
}
//_________________________________________________________________
void AliXXXLayer::Clear(Option_t *)
{
// clear cluster info
ClearSortedInfo();
fNClusters = 0;
if (fClusters) fClusters->Clear();
//
}
//_________________________________________________________________
void AliXXXLayer::ClearSortedInfo()
{
// clear cluster info
fSortedClInfo.clear();
memset(fBins,0,fNZBins*fNPhiBins*sizeof(ClBinInfo_t));
memset(fOccBins,0,fNZBins*fNPhiBins*sizeof(int));
fNOccBins = 0;
}
//_________________________________________________________________
void AliXXXLayer::Print(Option_t *opt) const
{
// dump cluster bins info
TString opts = opt;
opts.ToLower();
printf("Stored %d clusters in %d occupied bins\n",fNClusters,fNOccBins);
//
if (opts.Contains("c")) {
printf("\nCluster info\n");
for (int i=0;i<fNClusters;i++) {
const ClsInfo_t &t = fSortedClInfo[i];
printf("#%5d Bin(phi/z):%03d/%03d Z:%+8.3f Phi:%+6.3f R:%7.3f Ind:%d ",
i,t.zphibin/fNZBins,t.zphibin%fNZBins,t.z,t.phi,t.r,t.index);
if (opts.Contains("l")) { // mc labels
AliITSRecPoint* rp = (AliITSRecPoint*)fClusters->UncheckedAt(t.index);
for (int l=0;l<3;l++) if (rp->GetLabel(l)>=0) printf("| %d ",rp->GetLabel(l));
}
printf("\n");
}
}
//
if (opts.Contains("b")) {
printf("\nBins info (occupied only)\n");
for (int i=0;i<fNOccBins;i++) {
printf("%4d %5d(phi/z: %03d/%03d) -> %3d cl from %d\n",i,fOccBins[i],fOccBins[i]/fNZBins,fOccBins[i]%fNZBins,
fBins[fOccBins[i]].ncl,fBins[fOccBins[i]].first);
}
}
//
}
//_____________________________________________________________
int AliXXXLayer::SelectClusters(float zmin,float zmax,float phimin,float phimax)
{
// prepare occupied bins in the requested region
//printf("Select: Z %f %f | Phi: %f %f\n",zmin,zmax,phimin,phimax);
if (!fNOccBins) return 0;
if (zmax<fZMin || zmin>fZMax || zmin>zmax) return 0;
fFoundBins.clear();
fQueryZBmin = GetZBin(zmin);
if (fQueryZBmin<0) fQueryZBmin = 0;
fQueryZBmax = GetZBin(zmax);
if (fQueryZBmax>=fNZBins) fQueryZBmax = fNZBins-1;
BringTo02Pi(phimin);
BringTo02Pi(phimax);
fQueryPhiBmin = GetPhiBin(phimin);
fQueryPhiBmax = GetPhiBin(phimax);
int dbz=0;
fNFoundClusters = 0;
int nbcheck = fQueryPhiBmax - fQueryPhiBmin + 1;
if (nbcheck>0) { // no wrapping around 0-2pi, fast case
for (int ip=fQueryPhiBmin;ip<=fQueryPhiBmax;ip++) {
int binID = GetBinIndex(fQueryZBmin,ip);
if ( !(dbz=(fQueryZBmax-fQueryZBmin)) ) { // just one Z bin in the query range
ClBinInfo_t& binInfo = fBins[binID];
if (!binInfo.ncl) continue;
fNFoundClusters += binInfo.ncl;
fFoundBins.push_back(binID);
continue;
}
int binMax = binID+dbz;
for (;binID<=binMax;binID++) {
ClBinInfo_t& binInfo = fBins[binID];
if (!binInfo.ncl) continue;
fNFoundClusters += binInfo.ncl;
fFoundBins.push_back(binID);
}
}
}
else { // wrapping
nbcheck += fNPhiBins;
for (int ip0=0;ip0<=nbcheck;ip0++) {
int ip = fQueryPhiBmin+ip0;
if (ip>=fNPhiBins) ip -= fNPhiBins;
int binID = GetBinIndex(fQueryZBmin,ip);
if ( !(dbz=(fQueryZBmax-fQueryZBmin)) ) { // just one Z bin in the query range
ClBinInfo_t& binInfo = fBins[binID];
if (!binInfo.ncl) continue;
fNFoundClusters += binInfo.ncl;
fFoundBins.push_back(binID);
continue;
}
int binMax = binID+dbz;
for (;binID<=binMax;binID++) {
ClBinInfo_t& binInfo = fBins[binID];
if (!binInfo.ncl) continue;
fNFoundClusters += binInfo.ncl;
fFoundBins.push_back(binID);
}
}
}
fFoundClusterIterator = fFoundBinIterator = 0;
/*
//printf("Selected -> %d cl in %d bins\n",fNFoundClusters,(int)fFoundBins.size());
for (int i=0;i<(int)fFoundBins.size();i++) {
int bn = fFoundBins[i];
ClBinInfo_t& bin=fBins[bn];
printf("#%d b:%d 1st: %3d Ncl:%d\n",i,bn,bin.first,bin.ncl);
}
printf("\n");
*/
return fNFoundClusters;
}
//_____________________________________________________________
int AliXXXLayer::GetNextClusterInfoID()
{
if (fFoundBinIterator<0) return 0;
int currBin = fFoundBins[fFoundBinIterator];
if (fFoundClusterIterator<fBins[currBin].ncl) { // same bin
return fBins[currBin].first+fFoundClusterIterator++;
}
if (++fFoundBinIterator<int(fFoundBins.size())) { // need to change bin
currBin = fFoundBins[fFoundBinIterator];
fFoundClusterIterator = 1;
return fBins[currBin].first;
}
fFoundBinIterator = -1;
return -1;
}
//_____________________________________________________________
void AliXXXLayer::ResetFoundIterator()
{
// prepare for a new loop over found clusters
if (fNFoundClusters) fFoundClusterIterator = fFoundBinIterator = 0;
}