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CCluster3DHits.hxx
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#ifndef CCluster3DHits_hxx_seen
#define CCluster3DHits_hxx_seen
#include "TROOT.h"
#include "TObject.h"
#include "TMath.h"
#include "CHit3D.hxx"
#include "CCluster3D.hxx"
#include "CBond3D.hxx"
#include <iostream>
#include <vector>
#include "TVector3.h"
#include "TTmplDensityCluster.hxx"
#include "TTmplMinimalSpanningTree.hxx"
#include "LinearFit.hxx"
template<typename T>
class CPositionMetric{
public:
double operator()(T lhs,T rhs){
double x1=lhs.GetPosition().X();
double y1=lhs.GetPosition().Y();
double z1=lhs.GetPosition().Z();
double x2=rhs.GetPosition().X();
double y2=rhs.GetPosition().Y();
double z2=rhs.GetPosition().Z();
return sqrt(pow(x1-x2,2)+pow(y1-y2,2)+pow(z1-z2,2));
}
};
template<typename T>
class CPositionMetricWithCharge{
public:
double operator()(T lhs,T rhs){
double x1=lhs.GetPosition().X();
double y1=lhs.GetPosition().Y();
double z1=lhs.GetPosition().Z();
double charge1=lhs.GetCharge();
double x2=rhs.GetPosition().X();
double y2=rhs.GetPosition().Y();
double z2=rhs.GetPosition().Z();
double charge2=rhs.GetCharge();
double chargeCorr=exp(-(charge2+charge1))*0.01;
return sqrt(pow(x1-x2,2)+pow(y1-y2,2)+pow(z1-z2,2))+chargeCorr;
}
};
typedef TTmplDensityCluster<CHit3D,CPositionMetric<CHit3D>> AlgDBScan;
typedef TTmplMinimalSpanningTree<CHit3D,CPositionMetricWithCharge<CHit3D>,int> AlgMST;
std::vector<int> indexNParents(const AlgMST::MinimalSpanningTree& tree,int i, int n){
std::vector<int> indexes;
int currentIndex=i;
int parent=0;
if(tree[currentIndex].Parent==-1){return indexes;}
while(parent<n && tree[currentIndex].Parent!=-1){
int parentIndex=tree[currentIndex].Parent;
currentIndex=parentIndex;
indexes.push_back(currentIndex);
parent++;
}
return indexes;
};
std::vector<CHit3D> ConvertIdToHit(const std::vector<int>& IDs,const std::vector<CHit3D>& hits){
std::vector<CHit3D> actualHits;
for(std::size_t i=0;i<IDs.size();++i){
for(std::vector<CHit3D>::const_iterator h=hits.begin();h!=hits.end();++h){
if(IDs[i]==h->GetId()){actualHits.push_back(*h);break;}
}
}
return actualHits;
};
void CCluster3DHits(TTree* tree3D){
const unsigned int minHits=2;
const double maxDist=3;
#define SPLITTING
#ifdef SPLITTING
int SPLITSIZE=19; //must be odd
int NHITSFIT=(SPLITSIZE-1)/2;
double ANGLE=0.8;
#endif
#ifndef SPLITTING
int SPLITSIZE=9999;
#endif
std::vector<CHit3D>* hits3D=0;
std::vector<CHit2D>* hits2D=0;
tree3D->SetBranchAddress("3DHits",&hits3D);
tree3D->SetBranchAddress("Unused2DHits",&hits2D);
std::vector<CCluster3D> clustersFinal;
std::vector<CHit3D> all3D;
std::vector<CHit3D> unused3D;
std::vector<CHit2D> unused2D;
std::vector<CBond3D> bonds;
TFile* hfile = new TFile("FileWith3DClusters.root","RECREATE");
TTree *newTree = new TTree("treeWith3DClusters","tree with 3D clusters");
newTree->Branch("3DClusters","vector<CCluster3D>",&clustersFinal,64000,1);
newTree->Branch("Bonds","vector<CBond3D>",&bonds,64000,1);
newTree->Branch("All3DHits","vector<CHit3D>",&all3D,64000,1);
newTree->Branch("Unused3DHits","vector<CHit3D>",&unused3D,64000,1);
newTree->Branch("Unused2DHits","vector<CHit2D>",&unused2D,64000,1);
int nentry = tree3D->GetEntries();
for(int i=0;i<nentry;++i){
std::cout<<"Process event "<<i+1<<"/"<<nentry<<std::endl;
tree3D->GetEntry(i);
unused2D=(*hits2D);
all3D=(*hits3D);
std::shared_ptr<AlgDBScan> clus(new AlgDBScan(minHits,maxDist));
std::vector<CHit3D> hits3D_mod;
for(std::size_t h=0;h<hits3D->size();++h){
if((*hits3D)[h].GetCharge()<2)continue;
hits3D_mod.push_back((*hits3D)[h]);
}
clus->Cluster(hits3D_mod);
unsigned int nClusters=clus->GetClusterCount();
std::cout<<"Number of Clusters Formed="<<nClusters<<std::endl;
std::vector<CHit3D> used3DHits;
//nClusters
for(std::size_t c=0;c<nClusters;++c){
std::cout<<"+++++++++++NEW CLUSTER++++++++++++"<<std::endl;
std::vector<CHit3D> clusteredHits=clus->GetPoints(c);
std::shared_ptr<AlgMST> mstAlg(new AlgMST);
std::cout<<"Cluster Size="<<clusteredHits.size()<<std::endl;
mstAlg->AddVertices(clusteredHits.begin(),clusteredHits.end());
mstAlg->MakeTree(*clusteredHits.begin());
const AlgMST::MinimalSpanningTree& tree = mstAlg->GetTree();
int placeInTree=-2;
int topDepth=-2;
for (int t = 0; t < tree.size(); ++t) {
if(topDepth<tree[t].VertexDepth){
topDepth=tree[t].VertexDepth;
placeInTree=t;
}
}
std::shared_ptr<AlgMST> mstAlg2(new AlgMST);
mstAlg2->AddVertices(clusteredHits.begin(),clusteredHits.end());
mstAlg2->MakeTree(*std::find(clusteredHits.begin(),clusteredHits.end(),tree[placeInTree].Object));
const AlgMST::MinimalSpanningTree& tree2 = mstAlg2->GetTree();
for(int t = 0; t < tree2.size(); ++t){
tree2[t].UserData=0;
}
if((int)tree2.size()<SPLITSIZE){
CCluster3D cluster;
for(int t = 0; t < tree2.size(); ++t){
if((int)t==0)cluster.SetStartPoint(tree2[t].Object.GetId());
if((int)t==(int)tree2.size()-1)cluster.SetEndPoint(tree2[t].Object.GetId());
cluster.AddConstituent(tree2[t].Object.GetId());
}
clustersFinal.push_back(cluster);
}else{
#ifdef SPLITTING
bool allVisited=0;
std::vector<CCluster3D> clusters;
std::vector<CHit3D> shortTails;
std::vector<int> shortTailsInd;
while(!allVisited){
int placeInTree2=-2;
int topDepth2=-2;
for (int t = 0; t < tree2.size(); ++t) {
if(topDepth2<tree2[t].VertexDepth && tree2[t].UserData==0){
topDepth2=tree2[t].VertexDepth;
placeInTree2=t;
}
}
int startIndex=placeInTree2;
if(startIndex==-2){allVisited=1;continue;}
std::vector<int> parents = indexNParents(tree2,startIndex,SPLITSIZE);
tree2[startIndex].UserData=1;
int distToUsed=0;
for(std::size_t p=0;p<parents.size();++p){
if(tree2[parents[p]].UserData==0){distToUsed++;}else{break;}
}
if((int)parents.size()==SPLITSIZE && distToUsed>14){
std::vector<std::pair<int,double>> runningAlphaPairs;
int currentIndex = parents[6];
bool hitroot=0;
bool hitUsedHit=0;
int step=0;
runningAlphaPairs.push_back(std::make_pair(startIndex,100));
for(int a=0;a<6;++a){
runningAlphaPairs.push_back(std::make_pair(parents[a],100));
}
while (!hitroot && !hitUsedHit) {
std::vector<int> parentsBefore = indexNParents(tree2,startIndex,NHITSFIT);
parentsBefore.insert(parentsBefore.begin(),startIndex);
std::vector<int> parentsAfter = indexNParents(tree2,currentIndex,NHITSFIT);
parentsAfter.insert(parentsAfter.begin(),currentIndex);
std::vector<TVector3> pointsBefore;
std::vector<TVector3> pointsAfter;
for(std::size_t p=0;p<parentsBefore.size();++p){
pointsBefore.push_back(tree2[parentsBefore[p]].Object.GetPosition());
pointsAfter.push_back(tree2[parentsAfter[p]].Object.GetPosition());
}
double p0Before[6];
double p0After[6];
TVector3 unitBefore=(pointsBefore.front()-pointsBefore.back()).Unit();
p0Before[0]=unitBefore.X();
p0Before[2]=unitBefore.Y();
p0Before[4]=unitBefore.Z();
p0Before[1]=pointsBefore[NHITSFIT].X();
p0Before[3]=pointsBefore[NHITSFIT].Y();
p0Before[5]=pointsBefore[NHITSFIT].Z();
TVector3 unitAfter=(pointsAfter.front()-pointsAfter.back()).Unit();
p0After[0]=unitAfter.X();
p0After[2]=unitAfter.Y();
p0After[4]=unitAfter.Z();
p0After[1]=pointsAfter[0].X();
p0After[3]=pointsAfter[0].Y();
p0After[5]=pointsAfter[0].Z();
std::vector<double> outBefore = LinearFit(pointsBefore,p0Before);
std::vector<double> outAfter = LinearFit(pointsAfter,p0After);
TVector3 vectBefore(outBefore[0],outBefore[2],outBefore[4]);
TVector3 vectAfter(outAfter[0],outAfter[2],outAfter[4]);
double alpha =(vectBefore.Unit()).Dot((vectAfter.Unit()));///(unitBefore.Mag()*vectBefore.Mag());
if(fabs(alpha)<ANGLE){runningAlphaPairs.push_back(std::make_pair(currentIndex,alpha));}else{runningAlphaPairs.push_back(std::make_pair(currentIndex,100));}
tree2[currentIndex].UserData=1;
currentIndex=tree2[currentIndex].Parent;
startIndex=tree2[startIndex].Parent;
if(tree2[parentsAfter.back()].Parent==-1)hitroot=1;
if(tree2[parentsAfter.back()].UserData==1)hitUsedHit=1;
for(std::size_t p=0;p<parentsBefore.size();++p){
tree2[parentsBefore[p]].UserData=1;
tree2[parentsAfter[p]].UserData=1;
}
}
std::vector<int> parentsLast = indexNParents(tree2,currentIndex,NHITSFIT);
parentsLast.insert(parentsLast.begin(),currentIndex);
for(int a=0;a<NHITSFIT;++a){
runningAlphaPairs.push_back(std::make_pair(parentsLast[a],100));
}
std::vector<std::pair<int,double>>::iterator it= runningAlphaPairs.begin();
std::vector<std::pair<int,double>>::iterator clbegin= runningAlphaPairs.begin();
std::vector<std::pair<int,double>>::iterator clend= runningAlphaPairs.begin();
while (it!=runningAlphaPairs.end()) {
if(it->second!=100){
std::vector<std::pair<int,double>> kinkClust;
std::vector<std::pair<int,double>>::iterator it2=it;
while(it2->second!=100 && it2!=runningAlphaPairs.end()){
kinkClust.push_back(*it2);
++it2;
++it;
}
int indexAlptha=-1;
double minAlpha=9999;
for(std::size_t kk=0;kk<kinkClust.size();++kk){
if(kinkClust[kk].second<minAlpha){minAlpha=kinkClust[kk].second;indexAlptha=kk;}
}
clend=it-(int)kinkClust.size()+indexAlptha;
CCluster3D clusterPart;
for(std::vector<std::pair<int,double>>::iterator f=clbegin;f!=clend+1;++f){
if(f==clbegin)clusterPart.SetStartPoint(tree2[f->first].Object.GetId());
if(f==clend)clusterPart.SetEndPoint(tree2[f->first].Object.GetId());
clusterPart.AddConstituent(tree2[f->first].Object.GetId());
}
clusters.push_back(clusterPart);
clbegin=clend;
}else{
++it;
}
}
clend=runningAlphaPairs.end();
CCluster3D clusterPart;
for(std::vector<std::pair<int,double>>::iterator f=clbegin;f!=clend;++f){
if(f==clbegin)clusterPart.SetStartPoint(tree2[f->first].Object.GetId());
if(f==clend-1)clusterPart.SetEndPoint(tree2[f->first].Object.GetId());
clusterPart.AddConstituent(tree2[f->first].Object.GetId());
}
clusters.push_back(clusterPart);
tree2[currentIndex].UserData=1;
}else{
parents.insert(parents.begin(),startIndex);
if(distToUsed<5){
for(std::size_t p=0;p<distToUsed+1;++p){
shortTails.push_back(tree2[parents[p]].Object);
shortTailsInd.push_back(parents[p]);
tree2[parents[p]].UserData=1;
}
}else{
//CreateCluster
CCluster3D clusterPart;
int p_final=-1;
if(distToUsed+2<(int)parents.size()){p_final=distToUsed+2;}else{p_final=(int)parents.size();}
for(int p=0;p<p_final;++p){
if(p==0)clusterPart.SetStartPoint(tree2[parents[p]].Object.GetId());
if(p==p_final-1)clusterPart.SetEndPoint(tree2[parents[p]].Object.GetId());
clusterPart.AddConstituent(tree2[parents[p]].Object.GetId());
tree2[parents[p]].UserData=1;
}
clusters.push_back(clusterPart);
}
}
//Check Visited Hits
int nAnused=0;
for (int t = 0; t < tree2.size(); ++t) {
if(tree2[t].UserData==0)nAnused++;
}
if(nAnused>0)allVisited=0;
}
std::cout<<"shortTails="<<shortTails.size()<<"; clusterparts="<<clusters.size()<<std::endl;
int nShortsUsed=0;
for(std::size_t st=0;st<shortTails.size();++st){
CHit3D hit= shortTails[st];
int clustnum=-1;
double mindist=99999;
for(std::size_t cc=0;cc<clusters.size();++cc){
std::vector<CHit3D> constituents=ConvertIdToHit(clusters[cc].GetConstituents(),all3D);
for(std::size_t hitc=0;hitc<constituents.size();++hitc){
if((constituents[hitc].GetPosition()-hit.GetPosition()).Mag()<mindist){mindist=(constituents[hitc].GetPosition()-hit.GetPosition()).Mag();clustnum=cc;}
}
}
if(clustnum>-1){
nShortsUsed++;
clusters[clustnum].AddConstituent(hit.GetId());
}
}
for(std::size_t cc=0;cc<clusters.size();++cc){
clustersFinal.push_back(clusters[cc]);
}
#endif
}
for(std::size_t h=0;h<clusteredHits.size();++h){
used3DHits.push_back(clusteredHits[h]);
}
}
//GIVE CLUSTERS IDs and MAKE Bonds
for(std::size_t cc=0;cc<clustersFinal.size();++cc){
clustersFinal[cc].SetId((int)cc);
}
for(std::size_t cc=0;cc<clustersFinal.size();++cc){
int start=clustersFinal[cc].GetStartPoint();
bool unUsedBond=1;
for(std::size_t j=0;j<bonds.size();++j){
if(bonds[j].GetPoint()==start)unUsedBond=0;
}
if(unUsedBond){
CBond3D newBond;
newBond.SetPoint(start);
newBond.AddConstituent(clustersFinal[cc].GetId());
for(std::size_t cc2=cc+1;cc2<clustersFinal.size();++cc2){
int start2=clustersFinal[cc2].GetStartPoint();
int end2=clustersFinal[cc2].GetEndPoint();
if(start==start2 || start==end2)newBond.AddConstituent(clustersFinal[cc2].GetId());
}
bonds.push_back(newBond);
}
int end=clustersFinal[cc].GetEndPoint();
unUsedBond=1;
for(std::size_t j=0;j<bonds.size();++j){
if(bonds[j].GetPoint()==end)unUsedBond=0;
}
if(unUsedBond){
CBond3D newBond;
newBond.SetPoint(end);
newBond.AddConstituent(clustersFinal[cc].GetId());
for(std::size_t cc2=cc+1;cc2<clustersFinal.size();++cc2){
int start2=clustersFinal[cc2].GetStartPoint();
int end2=clustersFinal[cc2].GetEndPoint();
if(end==start2 || end==end2)newBond.AddConstituent(clustersFinal[cc2].GetId());
}
bonds.push_back(newBond);
}
}
for(std::size_t j=0;j<bonds.size();++j){
bonds[j].SetId((int)j);
int pnt=bonds[j].GetPoint();
for(std::size_t cc=0;cc<clustersFinal.size();++cc){
if(pnt==clustersFinal[cc].GetStartPoint() || pnt==clustersFinal[cc].GetEndPoint())clustersFinal[cc].AddBond(bonds[j].GetId());
}
}
for(std::vector<CHit3D>::iterator h=hits3D->begin();h!=hits3D->end();++h){
if(std::find(used3DHits.begin(),used3DHits.end(),*h)!=used3DHits.end())continue;
unused3D.push_back(*h);
}
newTree->Fill();
unused3D.clear();
unused2D.clear();
all3D.clear();
clustersFinal.clear();
bonds.clear();
}
hfile->Write();
hfile->Close();
delete hfile;
};
#endif