91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
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#include <TH2F.h>
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#include <TFile.h>
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#include <TChain.h>
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#include <TROOT.h>
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#include <TStyle.h>
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#include <TCanvas.h>
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#include <TCutG.h>
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#include <TString.h>
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#include <TObjArray.h>
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void PIDCutCreator(TH2F* hist,
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TString saveFileName = "PIDCuts.root",
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bool isLogz = false
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){
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printf("================ Graphic Cut Creator for PID ============== \n");
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gStyle->SetOptStat("neiou");
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TCanvas * cCutCreator = new TCanvas("cCutCreator", "PID Cut Creator", 100, 100, 800, 800);
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if( !cCutCreator->GetShowToolBar() ) cCutCreator->ToggleToolBar();
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cCutCreator->Update();
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if( isLogz ) cCutCreator->cd()->SetLogz();
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hist->Draw("colz");
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TFile * cutFile;
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TCutG * cut = NULL;
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TObjArray * cutList;
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///===================== load the cutFile and load the cutList
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int numCut = 0;
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cutFile = new TFile(saveFileName, "UPDATE");
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if( cutFile == NULL ){
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cutFile = new TFile(saveFileName, "recreate");
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}
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bool listExist = cutFile->GetListOfKeys()->Contains("cutList");
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if( !listExist ) {
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cutList = new TObjArray();
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}else{
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cutList = (TObjArray*) cutFile->FindObjectAny("cutList");
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numCut = cutList->GetLast()+1;
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printf("----- found %d cuts \n", numCut);
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for( int k = 0; k < numCut; k++){
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if( cutList->At(k) != NULL ){
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printf("found a cut at %2d \n", k);
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cut = (TCutG*) cutList->At(k);
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cut->Draw("same");
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}else{
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printf(" No cut at %2d \n", k);
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}
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}
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}
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cCutCreator->Modified(); cCutCreator->Update();
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int countCut = 0;
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while (true){
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printf("======== make a graphic cut on the plot (double click to stop), %2d-th cut: ", countCut );
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gPad->WaitPrimitive();
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cut = (TCutG*) gROOT->FindObject("CUTG");
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if( cut == NULL ){
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printf(" stopped by user.\n");
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break;
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}
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TString name; name.Form("cut%dd", countCut);
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cut->SetName(name);
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cut->SetVarX("TOF");
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cut->SetVarY("dE");
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cut->SetTitle(Form("cut%2d", countCut));
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cut->SetLineColor(countCut+1);
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printf(" cut-%d \n", countCut);
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cutList->AddAtAndExpand(cut, countCut);
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countCut ++;
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}
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///================= Summary
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cutList->Write("cutList", TObject::kSingleKey);
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printf("====> saved %d cuts into %s\n", countCut, saveFileName.Data());
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gROOT->ProcessLine(".q");
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}
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