C++ TVirtualPad::SetFillColor方法代码示例

//______________________________________________________________________________
void HighlightFragment()
{
  // TODO templates: what and how highlighing
  if (!gPad || !gr) return;

  // not correct
  TVirtualPad *ph = (TVirtualPad *)gPad->FindObject("ph");
  if (!ph) {
    ph = new TPad("ph", "ph", 0.0, 0.2, 1.0, 1.0);
    ph->SetFillColor(kBlue-10);
    ph->Draw();
  }

  Int_t ih = gr->GetHighlightPoint();
  if (ih == -1) return;
  TRsnFragment *frag = group->FragmentAt(ih);
  if (!frag) return;

  TVirtualPad *save = gPad;
  ph->cd();
  TObject *element = frag->FindElement(tagname);
  if (!element) ph->Clear();
  else element->Draw();
  save->cd();
}

//_______________________________________________________________________________________
static void SetBackround(Color_t color, TVirtualPad *pad=0)
{
  TVirtualPad *thisPad = pad;
  if (!thisPad) thisPad = qPad();
  if (thisPad)  {
    thisPad->SetFillColor(color);
    thisPad->Modified();
    thisPad->Update();
  }
}

/** 
 * 
 * 
 * @param o 
 * @param useWeights 
 * @param correct
 *
 * @ingroup pwglf_forward_scripts_tests
 */
void
TestPoisson(Double_t o=.3, bool useWeights=false, bool correct=true)
{
  const char* load = "$ALICE_PHYSICS/PWGLF/FORWARD/analysis2/scripts/LoadLibs.C";
  if (!gROOT->GetClass("AliAODForwardMult")) {
    gROOT->Macro(load);
    gROOT->GetInterpreter()->UnloadFile(gSystem->ExpandPathName(load));
  }
  
  // --- Parameters of this script -----------------------------------
  Int_t      nBin =  5;  // Our detector matrix size 
  Int_t      nMax = TMath::Max(Int_t(nBin * nBin * o + .5)+nBin/2,nBin);  
  Int_t      nEv  = 10000; // Number of events
  Double_t   mp   = o;   // The 'hit' probability 


  TH2D* base = new TH2D("base", "Basic histogram", 
			nBin,-.5, nBin-.5, nBin, -.5, nBin-.5);
  base->SetXTitle("#eta");
  base->SetYTitle("#varphi");
  base->SetDirectory(0);
  base->SetOption("colz");

  Int_t tN1=nMax;    Double_t tMin1; Double_t tMax1;
  Int_t tN2=nMax*10; Double_t tMin2; Double_t tMax2=nMax;
  MakeIntegerAxis(tN1, tMin1, tMax1);
  MakeIntegerAxis(tN2, tMin2, tMax2);
  TH2D* corr = new TH2D("comp", "Comparison", 
			tN1, tMin1, tMax1, tN2, tMin2, tMax2);
  corr->SetXTitle("Input");
  corr->SetYTitle("Poisson");
  corr->SetDirectory(0);
  corr->SetOption("colz");
  corr->SetStats(0);
  TLine* lcorr = new TLine(0, 0, tMax2, tMax2);

  Int_t mm = TMath::Max(Int_t(nBin * o + .5),nBin/2);
  tN2=mm*10; tMax2 = mm;
  MakeIntegerAxis(tN2, tMin2, tMax2);
  Info("", "Making mean w/nbins=%d,range=[%f,%f]", tN2, tMin2, tMax2);
  TH2D* mean = new TH2D("mean", "Mean comparison", 
			tN2, tMin2, tMax2, tN2, tMin2, tMax2);
  mean->SetXTitle("Input");
  mean->SetYTitle("Poisson");
  mean->SetDirectory(0);
  mean->SetOption("colz");
  mean->SetStats(0);
  TLine* lmean = new TLine(tMin2, tMin2, tMax2, tMax2);

  TH1D* dist = new TH1D("dist", "Distribution of hits", tN1, tMin1, tMax1);
  dist->SetXTitle("s");
  dist->SetYTitle("P(s)");
  dist->SetFillColor(kRed+1);
  dist->SetFillStyle(3001);
  dist->SetDirectory(0);

  TH1D* diff = new TH1D("diff", "P-T", 100, -25, 25);
  diff->SetXTitle("Difference");
  diff->SetFillColor(kRed+1);
  diff->SetFillStyle(3001);
  diff->SetYTitle("Prob");

  AliPoissonCalculator* c = new AliPoissonCalculator("ignored");
  c->Init(nBin ,nBin);

  for (Int_t i = 0; i < nEv; i++) { 
    c->Reset(base);
    base->Reset();

    for (Int_t iEta = 0; iEta < nBin; iEta++) { 
      for (Int_t iPhi = 0; iPhi < nBin; iPhi++) { 
	// Throw a die 
	Int_t m = gRandom->Poisson(mp);
	dist->Fill(m);

	// Fill into our base histogram 
	base->Fill(iEta, iPhi, m);

	// Fill into poisson calculator 
	c->Fill(iEta, iPhi, m > 0, (useWeights ? m : 1));
      }
    }
    // Calculate the result 
    TH2D* res = c->Result(correct);
    
    // Now loop and compare 
    Double_t mBase = 0;
    Double_t mPois = 0;
    for (Int_t iEta = 0; iEta < nBin; iEta++) { 
      for (Int_t iPhi = 0; iPhi < nBin; iPhi++) { 
	Double_t p = res->GetBinContent(iEta, iPhi);
//.........这里部分代码省略.........

/** 
 * Draw the Poisson estimate of the occupancy
 * 
 * @param filename Input file name 
 * @param folder   Input folder name in file
 * 
 * @deprecated Use QATrender instead
 * @ingroup pwglf_forward_scripts_qa
 */
void
DrawOccupancy(const char* filename="forward.root", 
	      const char* folder="ForwardResults")
{
  gStyle->SetPalette(1);
  gStyle->SetOptFit(0);
  gStyle->SetOptStat(0);
  gStyle->SetOptTitle(0);
  gStyle->SetTitleW(.4);
  gStyle->SetTitleH(.1);
  gStyle->SetTitleX(.4);
  // gStyle->SetTitleY(.1);
  gStyle->SetTitleColor(0);
  gStyle->SetTitleStyle(0);
  gStyle->SetTitleBorderSize(0);
  
  TFile* file = TFile::Open(filename, "READ");
  if (!file) { 
    Error("DrawOccupancy", "failed to open %s", filename);
    return;
  }

  TList* forward = static_cast<TList*>(file->Get(folder));
  if (!forward) { 
    Error("DrawOccupancy", "List %s not found in %s", folder, filename);
    return;
  }

  TList* dc = static_cast<TList*>(forward->FindObject("fmdDensityCalculator"));
  if (!dc) { 
    Error("DrawOccupancy", "List fmdDensityCalculator not found in Forward");
    return;
  }
  
  TCanvas* c = new TCanvas("occupancy", 
			   "Mean Occupancy", 900, 700);
  c->SetFillColor(0);
  c->SetBorderSize(0);
  c->SetBorderMode(0);
  c->SetHighLightColor(0);
  c->SetBottomMargin(.15);
  c->SetTopMargin(.02);
  c->SetRightMargin(.02);
  c->SetLeftMargin(.15);
  c->Divide(3, 2, 0, 0);
  

  Double_t corrs[5];
  c->cd(1); corrs[0] = DrawRingOccupancy(dc, 1, 'I');
  c->cd(2); corrs[1] = DrawRingOccupancy(dc, 2, 'I');
  c->cd(5); corrs[2] = DrawRingOccupancy(dc, 2, 'O');
  c->cd(3); corrs[3] = DrawRingOccupancy(dc, 3, 'I');
  c->cd(6); corrs[4] = DrawRingOccupancy(dc, 3, 'O');

  TVirtualPad* p = c->cd(4);
  p->SetTopMargin(0.05);
  p->SetRightMargin(0.10);
  p->SetLeftMargin(0.15);
  p->SetBottomMargin(0.15);
  p->SetFillColor(0);

  TH1D* hc = new TH1D("occ", "Mean occupancy", 5, .5, 5.5);
  hc->SetFillColor(kRed+1);
  hc->SetFillStyle(3001);
  hc->SetMinimum(0.0);
  hc->GetXaxis()->SetBinLabel(1,"FMD1i"); hc->SetBinContent(1,corrs[0]);
  hc->GetXaxis()->SetBinLabel(2,"FMD2i"); hc->SetBinContent(2,corrs[1]);
  hc->GetXaxis()->SetBinLabel(3,"FMD2o"); hc->SetBinContent(3,corrs[2]);
  hc->GetXaxis()->SetBinLabel(4,"FMD3i"); hc->SetBinContent(4,corrs[3]);
  hc->GetXaxis()->SetBinLabel(5,"FMD3o"); hc->SetBinContent(5,corrs[4]);
  hc->GetXaxis()->SetLabelSize(0.08);
  hc->GetYaxis()->SetTitle("#bar{occupancy}");
  hc->SetMarkerSize(1.5);
  hc->Draw("text hist");
  hc->SetMaximum(hc->GetMaximum()*1.5);

  // TH2D* highCuts = static_cast<TH2D*>(dc->FindObject("highCuts"));
  // if (highCuts) highCuts->Draw("colz");
  c->cd();
  c->SaveAs("occupancy.png");
}