--- /dev/null
+Int_t ITSReadPlotData(char *filename = "galice.root", Int_t evNum = 0) {
+
+ /*********************************************************************
+ * *
+ * Macro used to read hits, digits and recpoints for a module *
+ * It draws 3 TH2Fs where stores the 2-D coordinates of these *
+ * data for a specified module (for which the macro asks when *
+ * it starts, with some checks to avoid wrong detector coords. *
+ * *
+ * Only a little 'experimental' warning: *
+ * with all the tests I have made, I wasn't able to plot the *
+ * digits fo the 5th layer... *
+ * I skipped this problem with an alert to beware th user, while *
+ * in this situation the macro plots only recpoints and hits *
+ * *
+ * Author: Alberto Pulvirenti *
+ * *
+ *********************************************************************/
+
+
+ extern Int_t GetModuleHits (TObject* its, Int_t ID[0], Float_t*& X, Float_t*& Y, Float_t*& Z, Bool_t*& St);
+ extern Int_t GetModuleRecPoints (TObject *its, Int_t ID[0], Float_t*& X, Float_t*& Z);
+ extern Int_t GetModuleDigits(TObject *its, Int_t ID[0], Int_t dtype, Float_t*& X, Float_t*& Z);
+ extern void AssignCoords(TArrayI *ID);
+
+ // First of all, here are put some variable declarations
+ // that are useful in the following part:
+ Int_t nparticles; // number of particles
+ // ITS module coordinates [layer = 1, ladder = 2, det = 3] and absolute ID[0] of module [0]
+ TArrayI ID(4);
+ Int_t nmodules, dtype; // Total number of modules and module type (SSD, SPD, SDD)
+ Float_t *x = 0, *y = 0, *z = 0; // Arrays where to store read coords
+ Bool_t *St = 0; // Status of the track (hits only)
+
+ // It's necessary to load the gAlice shared libs
+ // if they aren't already stored in memory...
+ if (gClassTable->GetID("AliRun") < 0) {
+ gROOT->LoadMacro("loadlibs.C");
+ loadlibs();
+ }
+ // Anyway, this macro needs to read a gAlice file, so it
+ // clears the gAlice object if there is already one in memory...
+ else {
+ if(gAlice){
+ delete gAlice;
+ gAlice = 0;
+ }
+ }
+
+ // Now is opened the Root input file containing Geometry, Kine and Hits
+ // by default its name must be "galice.root".
+ // When the file is opened, its contens are shown.
+ TFile *file = (TFile*)gROOT->GetListOfFiles()->FindObject(filename);
+ if (!file) file = new TFile(filename);
+ file->ls();
+
+ // Then, the macro gets the AliRun object from file.
+ // If this object is not present, an error occurs
+ // and the execution is stopped.
+ // Anyway, this operation needs some time,
+ // don't worry about an apparent absence of output and actions...
+ cout << "\nSearching in '" << filename << "' for an AliRun object ... " << flush;
+ gAlice = (AliRun*)file->Get("gAlice");
+ if (gAlice)
+ cout << "FOUND!" << endl;
+ else {
+ cout<<"NOT FOUND! The Macro can't continue!" << endl;
+ return 0;
+ }
+
+ // Then, the macro selects the event number specified. Default is 0.
+ nparticles = gAlice->GetEvent(evNum);
+ cout << "\nNumber of particles = " << nparticles << endl;
+ if (!nparticles) {
+ cout << "With no particles I can't do much... Goodbye!" << endl;
+ return 0;
+ }
+
+ // The next step is filling the ITS from the AliRun object.
+ AliITS *ITS = (AliITS*)gAlice->GetModule("ITS");
+ ITS->InitModules(-1, nmodules);
+ cout << "Number of ITS modules = " << nmodules << endl;
+ cout << "\nFilling modules (it takes a while, now)..." << flush;
+ ITS->FillModules(0, 0, nmodules, " ", " ");
+ cout << "DONE!" << endl;
+ AliITSgeom *gm = ITS->GetITSgeom();
+ AliITSDetType *det = ITS->DetType(dtype);
+ AliITSsegmentation *seg = det->GetSegmentationModel();
+
+ for(;;) {
+
+ // Input phase.
+ // The macro asks if the user wants to put a detector ID[0]
+ // or prefers to input layer, ladder and detector.
+ for (Int_t i = 0; i < 4; i++) ID[i] = -1;
+ Int_t answ;
+ do {
+ cout << "\nSelection modes:" << endl;
+ cout << "1) by layer - ladder - detector numbers" << endl;
+ cout << "2) by unique detector ID" << endl;
+ cout << "0) exit macro" << endl;
+ cout << "\nEnter your choice: ";
+ cin >> answ;
+ } while (answ < 0 || answ > 2);
+ switch (answ) {
+ case 0:
+ // input = 0 ---> EXIT
+ return;
+ break;
+ case 1:
+ // input = 1 ---> SELECTION BY COORD
+ do {
+ cout << "\nLayer number [1-6, 0 to exit]: ";
+ cin >> ID[1];
+ if (!ID[1]) return 0;
+ } while (ID[1] < 0 || ID[1] > 6);
+
+ // Detector type: 0 --> SPD, 1 --> SDD, 2 --> SSD.
+ // Layer 1,2 --> 0 / Layer 3,4 --> 1 / Layer 5,6 --> 2
+ dtype = ID[1] / 3;
+
+ // Once fixed the layer number, the macro calculates the max number
+ // for ladder and detector from geometry, and accepts only suitable values.
+ do {
+ ID[2] = gm->GetNladders(ID[1]);
+ cout << "Ladder number [1-" << ID[2] << ", 0 to exit]: ";
+ cin >> ID[2];
+ if (!ID[2]) return 0;
+ } while (ID[2] < 0 || ID[2] > gm->GetNladders(ID[1]));
+ do {
+ ID[3] = gm->GetNdetectors(ID[1]);
+ cout << "Detector number [1-" << ID[3] << ", 0 to exit]: ";
+ cin >> ID[3];
+ if (!ID[3]) return 0;
+ } while (ID[3] < 0 || ID[3] > gm->GetNdetectors(ID[1]));
+ break;
+ case 2:
+ // input = 2 ---> SELECTION BY ID[0]
+ do {
+ ID[0] = gm->GetIndexMax();
+ cout << "\n Detector ID number [0-" << ID[0] << ", -1 to exit]: ";
+ cin >> ID[0];
+ if (ID[0] == -1) return 0;
+ } while (ID[0] < 0 || ID[0] > gm->GetIndexMax());
+ break;
+ };
+
+ if (ID[0] == -1)
+ // If ID[0] = -1 the chioce was by coords, so it's necessary to assign the ID:
+ ID[0] = gm->GetModuleIndex(ID[1], ID[2], ID[3]);
+ else {
+ // Else we must get the layer, ladder and detector by the ID;
+ // ...but first we must remember that the ID goest from 0 to NModules - 1!
+ ID[0]--;
+ ID[1] = ITS->GetModule(ID[0])->GetLayer();
+ ID[2] = ITS->GetModule(ID[0])->GetLadder();
+ ID[3] = ITS->GetModule(ID[0])->GetDet();
+ }
+
+ // Defines the histograms inside the `for' cycle, so they are destroyed at the end
+ // of every read sequqnce, in order to mek another withour segmentation faults
+ Text_t msg[250], xm = 0.0, ym = 0.0;
+ switch (dtype) {
+ case 0: xm = 1.5; zm = 7.0; break;
+ case 1: xm = 7.5; zm = 8.0; break;
+ case 2: xm = 7.5; zm = 4.5; break;
+ }
+ sprintf(msg, "Module index=%d lay=%d lad=%d det=%d", ID[0], ID[1], ID[2], ID[3]);
+ TH2F *hhits = new TH2F("hhits", msg, 500, -xm, xm, 500, -zm, zm); // Histogram of hits
+ TH2F *hrecs = new TH2F("hrecs", msg, 500, -xm, xm, 500, -zm, zm); // Histogram of recpoints
+ TH2F *hdigits = new TH2F("hdigits", msg, 500, -xm, xm, 500, -zm, zm); // Histogram of digits
+
+ cout << endl;
+
+ // Reads hits...
+ Int_t hits = GetModuleHits(ITS, ID[0], x, y, z, St);
+ if (!hits) {
+ cout << "No hits in module!" << endl;
+ continue;
+ }
+ for (Int_t i = 0; i < hits; i++) if (!St[i]) hhits->Fill(x[i], z[i]);
+
+ // Reads recpoints...
+ Int_t recs = GetModuleRecPoints(ITS, ID[0], x, z);
+ if (!recs) {
+ cout << "No recpoints in module!" << endl;
+ continue;
+ }
+ for (Int_t i = 0; i < recs; i++) hrecs->Fill(x[i], z[i]);
+
+ // Reads digits...
+ Int_t digits = GetModuleDigits(ITS, ID[0], dtype, x, z);
+ if (!digits) {
+ cout << "No digits in module!" << endl;
+ //continue;
+ }
+ for (Int_t i = 0; i < digits; i++) hdigits->Fill(x[i], z[i]);
+
+ // Draws read data...
+ // HITS -------> red (2) crosses.
+ // DIGITS -----> green (8) boxes.
+ // REC-POINTS -> blue (4) St. Andrew's crosses.
+
+ TCanvas *viewer = new TCanvas("viewer", "Module viewer canvas", 0, 0, 800, 800);
+ viewer->cd();
+
+ hdigits->SetMarkerStyle(25);
+ hdigits->SetMarkerColor(8);
+ hdigits->SetMarkerSize(2);
+ hdigits->SetStats(kFALSE);
+ hdigits->SetXTitle("Local X (cm)");
+ hdigits->SetYTitle("Local Z (cm)");
+ hdigits->Draw();
+
+ hhits->SetMarkerStyle(5);
+ hhits->SetMarkerColor(2);
+ hhits->SetMarkerSize(3);
+ hhits->SetStats(kFALSE);
+ hhits->Draw("same");
+
+ hrecs->SetMarkerStyle(2);
+ hrecs->SetMarkerColor(4);
+ hrecs->SetMarkerSize(3);
+ hrecs->SetStats(kFALSE);
+ hrecs->Draw("same");
+
+ TLegend *legend = new TLegend(0.7, 0.8, 0.9, 0.9);
+ legend->SetMargin(0.2);
+ legend->AddEntry(hhits, "hits","P");
+ legend->AddEntry(hrecs, "recpoints","P");
+ legend->AddEntry(hdigits, "digits","P");
+ legend->SetTextSizePixels(14);
+ legend->Draw();
+
+ viewer->Update();
+ }
+
+ cout << "Done. Goodbye" << endl;
+ return;
+}
+
+Int_t GetModuleHits (TObject* its, Int_t ID, Float_t*& X, Float_t*& Y, Float_t*& Z, Bool_t*& St) {
+ // First of all, the macro selects the specified module,
+ // then gets the array of hits in it and their number.
+ AliITS *ITS = (AliITS*) its;
+ AliITSmodule *module = ITS->GetModule(ID);
+ TObjArray *hits_array = module->GetHits();
+ Int_t hits_num = hits_array->GetEntriesFast();
+
+ // Now, if this count returns 0, there's nothing to do,
+ // while, if it doesn't, the first thing to do is dimensioning
+ // the coordinate arrays, and then the loop can start.
+ if (!hits_num)
+ return 0;
+ else {
+ if (X) delete [] X;
+ if (Y) delete [] Y;
+ if (Z) delete [] Z;
+ if (St) delete [] St;
+ X = new Float_t[hits_num];
+ Y = new Float_t[hits_num];
+ Z = new Float_t[hits_num];
+ St = new Int_t[hits_num];
+ }
+
+ for (Int_t j = 0; j < hits_num; j++) {
+ AliITShit *hit = (AliITShit*) hits_array->At(j);
+ X[j] = hit->GetXL();
+ Y[j] = hit->GetYL();
+ Z[j] = hit->GetZL();
+ St[j] = hit->StatusEntering();
+ }
+ return hits_num;
+}
+
+Int_t GetModuleRecPoints (TObject *its, Int_t ID, Float_t*& X, Float_t*& Z) {
+
+ // First of all, the macro selects the specified module,
+ // then gets the array of recpoints in it and their number.
+ AliITS *ITS = (AliITS*) its;
+ TTree *TR = gAlice->TreeR();
+ ITS->ResetRecPoints();
+ TR->GetEvent(ID);
+ TClonesArray *recs_array = ITS->RecPoints();
+ Int_t recs_num = recs_array->GetEntries();
+
+ // Now, if this count returns 0, there's nothing to do,
+ // while, if it doesn't, the first thing to do is dimensioning
+ // the coordinate and energy loss arrays, and then the loop can start.
+ if (!recs_num)
+ return 0;
+ else {
+ if (X) delete [] X;
+ if (Z) delete [] Z;
+ X = new Float_t[recs_num];
+ Z = new Float_t[recs_num];
+ }
+ for(Int_t j = 0; j < recs_num; j++) {
+ AliITSRecPoint *recp = (AliITSRecPoint*)recs_array->At(j);
+ X[j] = recp->GetX();
+ Z[j] = recp->GetZ();
+ }
+ return recs_num;
+}
+
+Int_t GetModuleDigits(TObject *its, Int_t ID, Int_t dtype, Float_t*& X, Float_t*& Z) {
+
+ // First of all, the macro selects the specified module,
+ // then gets the array of recpoints in it and their number.
+ AliITS *ITS = (AliITS*)its;
+ TTree *TD = gAlice->TreeD();
+ ITS->ResetDigits();
+ TD->GetEvent(ID);
+ TClonesArray *digits_array = ITS->DigitsAddress(dtype);
+ AliITSgeom *gm = ITS->GetITSgeom();
+ AliITSDetType *det = ITS->DetType(dtype);
+ AliITSsegmentation *seg = det->GetSegmentationModel();
+ TArrayI ssdone(5000); // used to match p and n side digits of strips
+ TArrayI pair(5000); // as above
+ Int_t digits_num = digits_array->GetEntries();
+ // Now, if this count returns 0, there's nothing to do,
+ // while, if it doesn't, the first thing to do is dimensioning
+ // the coordinate and energy loss arrays, and then the loop can start.
+
+ if (!digits_num)
+ return 0;
+ else {
+ if (X) delete [] X;
+ if (Z) delete [] Z;
+ X = new Float_t[digits_num];
+ Z = new Float_t[digits_num];
+ }
+
+ // Get the coordinates of the module
+ if (dtype == 2) {
+ for (Int_t j = 0; j < digits_num; j++) {
+ ssdone[j] = 0;
+ pair[j] = 0;
+ }
+ }
+ for (Int_t j = 0; j < digits_num; j++) {
+ cout << j << endl;
+ digit = (AliITSdigit*)digits_array->UncheckedAt(j);
+ Int_t iz=digit->fCoord1; // cell number z
+ Int_t ix=digit->fCoord2; // cell number x
+ // Get local coordinates of the element (microns)
+ if(dtype < 2)
+ seg->GetPadCxz(ix, iz, X[j], Z[j]);
+ else {
+ // SSD: if iz==0 ---> N side; if iz==1 P side
+ if (ssdone[j] == 0) {
+ ssdone[j]=1;
+ pair[j]=-1;
+ Bool_t pside = (iz == 1);
+ Bool_t impaired = kTRUE;
+ Int_t pstrip = 0;
+ Int_t nstrip = 0;
+ if (pside) pstrip = ix; else nstrip = ix;
+ for (Int_t k = 0; k < digits_num; k++) {
+ if (ssdone[k] == 0 && impaired) {
+ AliITSdigitSSD *sdigit=(AliITSdigitSSD*)digits_array->UncheckedAt(k);
+ if (sdigit->fCoord1 != iz && sdigit->GetTracks()[0] == digit->GetTracks()[0]) {
+ ssdone[k]=2;
+ pair[j]=k;
+ if (pside) nstrip = sdigit->fCoord2; else pstrip = sdigit->fCoord2;
+ impaired=kFALSE;
+ }
+ }
+ }
+ if (!impaired) seg->GetPadCxz(pstrip, nstrip, X[j], Z[j]);
+ }
+ }
+ if (dtype == 0) {
+ // !!!THIS CONVERSION TO HIT LRS SHOULD BE REMOVED AS SOON AS THE CODE IS FIXED
+ X[j] = X[j]-seg->Dx() / 2.0;
+ Z[j] = Z[j]-seg->Dz() / 2.0;
+ }
+ if (dtype != 1) {
+ X[j] /= 10000.0;
+ Z[j] /= 10000.0;
+ }
+ }
+ return digits_num;
+}
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff