1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 //////////////////////////////////////////////////////////////////////////
22 // Utility class to display ALICE outline, tracks, hits,.. //
24 //////////////////////////////////////////////////////////////////////////
33 #include <TPaveLabel.h>
34 #include <TPaveText.h>
36 #include <TSliderBox.h>
38 #if ROOT_VERSION_CODE>= 331523
43 #include <TVirtualX.h>
46 #include "AliDetector.h"
47 #include "AliDisplay.h"
48 #include "AliHeader.h"
49 #include "AliPoints.h"
52 #include "TGeometry.h"
53 #include "TParticle.h"
56 const Float_t AliDisplay::fgkPtCutMax = 2;
57 const Float_t AliDisplay::fgkEtaCutMax = 1.5;
58 const Int_t AliDisplay::fgkMaxZooms = 20;
64 //_______________________________________________________________________
65 AliDisplay::AliDisplay():
95 // Default constructor
99 //_____________________________________________________________________________
100 AliDisplay::AliDisplay(Int_t size):
102 fDrawAllViews(kFALSE),
103 fDrawParticles(kTRUE),
129 // Create an event display object.
130 // A canvas named "edisplay" is created with a vertical size in pixels
132 // A QUICK Overview of the Event Display functions
133 // ===============================================
135 // The event display can ve invoked by executing the macro "display.C"
136 // A canvas like in the picture below will appear.
138 // On the left side of the canvas, the following buttons appear:
139 // *Next* to move to the next event
140 // *Previous* to move to the previous event
141 // *Top View* to display a top view of the current event
142 // *Side View* to display a side view of the current event
143 // *Front View* to display a front view of the current event
144 // *All Views* to display front/side/top/30-30 views of the current event
145 // *OpenGL* to use OpenGl to view the current event.
146 // Note that OpenGL cannot be used across the network.
147 // Before using OpenGL, load the GL libraries
148 // by executing the macro GL.C (in $ROOTSYS/macros/GL.C.
149 // Once in GL, click the HELP button of the GL canvas.
150 // *X3D* to use X3D to view the current event (Unix only).
151 // Once in X3D, type M to see the list of all possible options.
152 // for example type J to zoom, K to unzoom
153 // use the mouse to rotate.
154 // *Pick* Select this option to be able to point on a track with the
155 // mouse. Once on the track, use the right button to select
156 // an action. For example, select SetMarkerAttributes to
157 // change the marker type/color/size for the track.
158 // *Zoom* Select this option (default) if you want to zoom.
159 // To zoom, simply select the selected area with the left button.
160 // *UnZoom* To revert to the previous picture size.
162 // slider R On the left side, the vertical slider can be used to
163 // set the default picture size.
164 // slider pcut At the top of the canvas, a slider can be used to change
165 // the momentum cut (or range) to display tracks.
166 // slider eta On the right side of the canvas, a vertical slider can be used
167 // to specify a rapidity range for the tracks.
169 // When you are in Zoom mode, you can click on the black part of the canvas
170 // to select special options with the right mouse button.
171 // This will display a pop-up menu with items like:
172 // *Disable detector*
173 // *Enable detector*, etc.
174 // For example select "Disable detector". You get a dialog box.
175 // Diable detector TRD for example.
177 // When you are in pick mode, you can "Inspect" the object pointed by the mouse.
178 // When you are on a track, select the menu item "InspectParticle"
179 // to display the current particle attributes.
181 // You can activate the Root browser by selecting the Inspect menu
182 // in the canvas tool bar menu. Then select "Start Browser"
183 // This will open a new canvas with the browser. At this point, you may want
184 // to display some histograms (from the Trees). Go to the "File" menu
185 // of the browser and click on "New canvas".
186 // In the browser, click on item "ROOT files" in the left pane.
187 // Click on galice.root.
189 // Click on TPC for example
190 // Click on any variable (eg TPC.fX) to histogram the variable.
192 // If you are lost, you can click on HELP in any Root canvas or browser.
195 <img src="picts/alidisplay.gif">
199 gAlice->SetDisplay(this);
201 // Initialize display default parameters
205 // Create display canvas
207 if (ysize < 100) ysize = 750;
208 Int_t xsize = Int_t(size*830./ysize);
209 fCanvas = new TCanvas("Canvas", "ALICE Event Display",14,47,xsize,ysize);
210 fCanvas->ToggleEventStatus();
212 // Create main display pad
213 fPad = new TPad("viewpad", "Alice display",0.15,0,0.97,0.96);
216 fPad->SetFillColor(1);
217 fPad->SetBorderSize(2);
219 // Create user interface control pad
223 // Create Range and mode pad
226 fTrigPad = new TPad("trigger", "range and mode pad",0,0,dxtr,dytr);
229 fTrigPad->SetFillColor(22);
230 fTrigPad->SetBorderSize(2);
231 fRangeSlider = new TSlider("range","range",0.7,0.42,0.9,0.98);
232 fRangeSlider->SetObject(this);
233 char pickmode[] = "gAlice->Display()->SetPickMode()";
235 fPickButton = new TButton("Pick",pickmode,0.05,0.32,0.65,0.32+db);
236 fPickButton->SetFillColor(38);
238 char zoommode[] = "gAlice->Display()->SetZoomMode()";
239 fZoomButton = new TButton("Zoom",zoommode,0.05,0.21,0.65,0.21+db);
240 fZoomButton->SetFillColor(38);
242 fArcButton = new TArc(.8,fZoomButton->GetYlowNDC()+0.5*db,0.33*db);
243 fArcButton->SetFillColor(kGreen);
245 char butUnzoom[] = "gAlice->Display()->UnZoom()";
246 TButton *button = new TButton("UnZoom",butUnzoom,0.05,0.05,0.95,0.15);
247 button->SetFillColor(38);
249 AppendPad(); // append display object as last object to force selection
250 // Create momentum cut slider pad
252 fCutPad = new TPad("cutSlider", "pcut slider pad",dxtr,.96,1,1);
255 fCutPad->SetFillColor(22);
256 fCutPad->SetBorderSize(2);
257 fCutSlider = new TSlider("pcut","Momentum cut",0,0,1,1);
258 fCutSlider->SetRange(fPTcut/fgkPtCutMax,1);
259 fCutSlider->SetObject(this);
260 fCutSlider->SetFillColor(45);
261 TSliderBox *sbox = dynamic_cast<TSliderBox*>(fCutSlider->GetListOfPrimitives()->First());
262 sbox->SetFillColor(46);
264 TGaxis *cutaxis = new TGaxis(0.02,0.8,0.98,0.8,0,fgkPtCutMax,510,"");
265 cutaxis->SetLabelSize(0.5);
266 cutaxis->SetTitleSize(0.6);
267 cutaxis->SetTitleOffset(0.5);
268 cutaxis->SetTitle("pcut . ");
269 fCutSlider->GetListOfPrimitives()->AddFirst(cutaxis);
270 // Create rapidity cut slider pad
272 fEtaPad = new TPad("EtaSlider", "Eta slider pad",0.97,0,1,0.96);
275 fEtaPad->SetFillColor(22);
276 fEtaPad->SetBorderSize(2);
277 fEtaSlider = new TSlider("etacut","Rapidity cut",0,0,1,1);
278 fEtaSlider->SetObject(this);
279 fEtaSlider->SetFillColor(45);
280 TSliderBox *sbox2 = dynamic_cast<TSliderBox*>(fEtaSlider->GetListOfPrimitives()->First());
281 sbox2->SetFillColor(46);
283 TGaxis *etaaxis = new TGaxis(0.9,0.02,0.9,0.98,-fgkEtaCutMax,fgkEtaCutMax,510,"");
284 etaaxis->SetLabelSize(0.5);
285 etaaxis->SetTitleSize(0.6);
286 etaaxis->SetTitleOffset(0.2);
287 cutaxis->SetTitle("Etacut . ");
288 fEtaSlider->GetListOfPrimitives()->AddFirst(etaaxis);
291 fTrigPad->SetEditable(kFALSE);
292 fButtons->SetEditable(kFALSE);
294 fNTracksToDisplay =0;
301 //_______________________________________________________________________
302 AliDisplay::AliDisplay(const AliDisplay &disp):
338 //_____________________________________________________________________________
339 AliDisplay::~AliDisplay()
346 //_____________________________________________________________________________
347 void AliDisplay::Clear(Option_t *)
349 // Delete graphics temporary objects
352 //_____________________________________________________________________________
353 void AliDisplay::Copy(TObject &) const
356 // Copy *this onto disp -- not implemented
358 AliFatal("Not implemented");
361 //----------------------------------------------------------------------------
362 void AliDisplay::ShowTrack(Int_t idx)
367 AliDetector *mTPC=dynamic_cast<AliDetector*>(gAlice->GetModule("TPC"));
368 TObjArray *points=mTPC->Points();
369 int ntracks=points->GetEntriesFast();
370 for (int track=0;track<ntracks;track++) {
371 AliPoints *pm = dynamic_cast<AliPoints*>(points->UncheckedAt(track));
373 if (idx == pm->GetIndex()) {
374 pm->SetMarkerColor(2);
375 pm->SetMarkerStyle(22);
379 // TClonesArray *particles=gAlice->Particles();
380 // TParticle *p = (TParticle*)particles->UncheckedAt(idx);
381 TParticle *p = gAlice->GetMCApp()->Particle(idx);
382 AliInfo(Form("Track index %d",idx));
383 AliInfo(Form("Particle ID %d",p->GetPdgCode()));
384 AliInfo(Form("Parent %d",p->GetFirstMother()));
385 AliInfo(Form("First child %d",p->GetFirstDaughter()));
386 AliInfo(Form("Px,Py,Pz %f %f %f",p->Px(),p->Py(),p->Pz()));
392 //----------------------------------------------------------------------------
393 void AliDisplay::HideTrack(Int_t idx) const
396 // Hide track on display
398 AliDetector *mTPC=dynamic_cast<AliDetector*>(gAlice->GetModule("TPC"));
399 TObjArray *points=mTPC->Points();
400 int ntracks=points->GetEntriesFast();
401 for (int track=0;track<ntracks;track++) {
402 AliPoints *pm = dynamic_cast<AliPoints*>(points->UncheckedAt(track));
404 if (idx == pm->GetIndex()) {
405 pm->SetMarkerColor(5);
406 pm->SetMarkerStyle(1);
415 //_____________________________________________________________________________
416 void AliDisplay::DisableDetector(const char *name)
418 // Disable detector name from graphics views
420 AliModule *module = dynamic_cast<AliModule*>(gAlice->Modules()->FindObject(name));
426 //_____________________________________________________________________________
427 void AliDisplay::DisplayButtons()
429 // Create the user interface buttons
431 fButtons = new TPad("buttons", "newpad",0,0.45,0.15,1);
433 fButtons->SetFillColor(38);
434 fButtons->SetBorderSize(2);
438 Float_t dbutton = 0.08;
445 char but1[] = "gAlice->Display()->ShowNextEvent(1)";
446 button = new TButton("Next",but1,x0,y-dbutton,x1,y);
447 button->SetFillColor(38);
451 char but2[] = "gAlice->Display()->ShowNextEvent(-1)";
452 button = new TButton("Previous",but2,x0,y-dbutton,x1,y);
453 button->SetFillColor(38);
457 char but3[] = "gAlice->Display()->SetView(90,-90,90)";
458 button = new TButton("Top View",but3,x0,y-dbutton,x1,y);
459 button->SetFillColor(butcolor);
463 char but4[] = "gAlice->Display()->SetView(90,0,-90)";
464 button = new TButton("Side View",but4,x0,y-dbutton,x1,y);
465 button->SetFillColor(butcolor);
469 char but5[] = "gAlice->Display()->SetView(0,-90,0)";
470 button = new TButton("Front View",but5,x0,y-dbutton,x1,y);
471 button->SetFillColor(butcolor);
475 char but6[] = "gAlice->Display()->DrawAllViews()";
476 button = new TButton("All Views",but6,x0,y-dbutton,x1,y);
477 button->SetFillColor(butcolor);
481 char but7[] = "gAlice->Display()->DrawViewGL()";
482 button = new TButton("OpenGL",but7,x0,y-dbutton,x1,y);
483 button->SetFillColor(38);
487 char but8[] = "gAlice->Display()->DrawViewX3D()";
488 button = new TButton("X3D",but8,x0,y-dbutton,x1,y);
489 button->SetFillColor(38);
493 TDiamond *diamond = new TDiamond(0.05,0.015,0.95,0.22);
494 diamond->SetFillColor(50);
495 diamond->SetTextAlign(22);
496 diamond->SetTextColor(5);
497 diamond->SetTextSize(0.11);
499 diamond->AddText(".. ");
500 diamond->AddText("ROOT");
501 diamond->AddText("ALICE");
502 diamond->AddText("... ");
503 diamond->AddText(" ");
506 //______________________________________________________________________________
507 Int_t AliDisplay::DistancetoPrimitive(Int_t px, Int_t)
509 // Compute distance from point px,py to objects in event
511 gPad->SetCursor(kCross);
513 if (gPad == fTrigPad) return 9999;
514 if (gPad == fCutPad) return 9999;
515 if (gPad == fEtaPad) return 9999;
517 const Int_t kbig = 9999;
519 Float_t xmin = gPad->GetX1();
520 Float_t xmax = gPad->GetX2();
521 Float_t dx = 0.02*(xmax - xmin);
522 Float_t x = gPad->AbsPixeltoX(px);
523 if (x < xmin+dx || x > xmax-dx) return dist;
525 if (fZoomMode) return 0;
529 //_____________________________________________________________________________
530 void AliDisplay::Draw(Option_t *)
532 // Display current event
541 DrawView(fTheta, fPhi, fPsi);
543 // Display the event number and title
548 //_____________________________________________________________________________
549 void AliDisplay::DrawAllViews()
551 // Draw front,top,side and 30 deg views
553 fDrawAllViews = kTRUE;
555 fPad->SetFillColor(15);
571 DrawView(90, -90, 90);
576 DrawView(90, 0, -90);
582 //_____________________________________________________________________________
583 void AliDisplay::DrawHits()
585 // Draw hits for all ALICE detectors
587 Float_t cutmin, cutmax, etamin, etamax, pmom, smin, smax, eta, theta, r;
595 smax = fCutSlider->GetMaximum();
596 smin = fCutSlider->GetMinimum();
597 cutmin = fgkPtCutMax*smin;
598 if (smax < 0.98) cutmax = fgkPtCutMax*smax;
599 else cutmax = 100000;
602 smax = fEtaSlider->GetMaximum();
603 smin = fEtaSlider->GetMinimum();
604 etamin = fgkEtaCutMax*(2*smin-1);
605 etamax = fgkEtaCutMax*(2*smax-1);
606 if (smin < 0.02) etamin = -1000;
607 if (smax > 0.98) etamax = 1000;
609 TIter next(gAlice->Modules());
612 while((module = dynamic_cast<AliModule*>(next()))) {
613 if (!module->IsActive()) continue;
614 points = module->Points();
615 if (!points) continue;
616 ntracks = points->GetEntriesFast();
617 for (track=0;track<ntracks;track++) {
618 pm = dynamic_cast<AliPoints*>(points->UncheckedAt(track));
620 particle = pm->GetParticle();
621 if (!particle) continue;
622 pmom = particle->P();
623 if (pmom < cutmin) continue;
624 if (pmom > cutmax) continue;
625 // as a first approximation, take eta of first point
627 r = TMath::Sqrt(pxyz[0]*pxyz[0] + pxyz[1]*pxyz[1]);
628 theta = TMath::ATan2(r,TMath::Abs(pxyz[2]));
629 if(theta) eta = -TMath::Log(TMath::Abs(TMath::Tan(0.5*theta))); else eta = 1e10;
630 if (pxyz[2] < 0) eta = -eta;
631 if (eta < etamin || eta > etamax) continue;
633 fHitsCuts += pm->GetN();
638 //_____________________________________________________________________________
639 void AliDisplay::DrawTitle(Option_t *option)
641 // Draw the event title
643 Float_t xmin = gPad->GetX1();
644 Float_t xmax = gPad->GetX2();
645 Float_t ymin = gPad->GetY1();
646 Float_t ymax = gPad->GetY2();
647 Float_t dx = xmax-xmin;
648 Float_t dy = ymax-ymin;
650 if (strlen(option) == 0) {
651 TPaveText *title = new TPaveText(xmin +0.01*dx, ymax-0.09*dy, xmin +0.5*dx, ymax-0.01*dy);
652 title->SetBit(kCanDelete);
653 title->SetFillColor(42);
656 sprintf(ptitle,"Alice event: %d, Run:%d",gAlice->GetHeader()->GetEvent(), gAlice->GetHeader()->GetRun());
657 title->AddText(ptitle);
658 Int_t nparticles = gAlice->GetMCApp()->Particles()->GetEntriesFast();
659 sprintf(ptitle,"Nparticles = %d Nhits = %d",nparticles, fHitsCuts);
660 title->AddText(ptitle);
662 TPaveLabel *label = new TPaveLabel(xmin +0.01*dx, ymax-0.07*dy, xmin +0.2*dx, ymax-0.01*dy,option);
663 label->SetBit(kCanDelete);
664 label->SetFillColor(42);
669 //_____________________________________________________________________________
670 void AliDisplay::DrawView(Float_t theta, Float_t phi, Float_t psi)
672 // Draw a view of ALICE
674 gPad->SetCursor(kWatch);
675 gPad->SetFillColor(1);
679 #if ROOT_VERSION_CODE>= 331523
680 Double_t rmin[]={-1,-1,-1};
681 Double_t rmax[]={ 1, 1, 1};
682 TView *view = new TView3D(1,rmin,rmax);
684 TView *view = new TView(1);
686 Float_t range = fRrange*fRangeSlider->GetMaximum();
687 view->SetRange(-range,-range,-range,range, range, range);
694 // Display Alice Geometry
695 gAlice->GetGeometry()->Draw("same");
697 //Loop on all detectors to add their products to the pad
700 // add itself to the list (must be last)
703 view->SetView(phi, theta, psi, iret);
706 //_____________________________________________________________________________
707 void AliDisplay::DrawViewGL()
709 // Draw current view using OPENGL
711 TPad *pad = dynamic_cast<TPad*>(gPad->GetPadSave());
713 TView *view = pad->GetView();
718 //_____________________________________________________________________________
719 void AliDisplay::DrawViewX3D()
721 // Draw current view using X3D
723 TPad *pad = dynamic_cast<TPad*>(gPad->GetPadSave());
725 TView *view = pad->GetView();
730 //_____________________________________________________________________________
731 void AliDisplay::EnableDetector(const char *name)
733 // Enable detector name in graphics views
735 AliModule *module = dynamic_cast<AliModule*>(gAlice->Modules()->FindObject(name));
741 //______________________________________________________________________________
742 void AliDisplay::ExecuteEvent(Int_t event, Int_t px, Int_t py)
744 // Execute action corresponding to the mouse event
746 static Float_t x0, y0, x1, y1;
748 static Int_t pxold, pyold;
749 static Int_t px0, py0;
750 static Int_t linedrawn;
753 if (px == 0 && py == 0) { //when called by sliders
754 if (event == kButton1Up) {
759 if (!fZoomMode && gPad->GetView()) {
760 gPad->GetView()->ExecuteRotateView(event, px, py);
764 // something to zoom ?
765 // fPad->SetCursor(kCross);
766 gPad->SetCursor(kCross);
771 gVirtualX->SetLineColor(-1);
772 gPad->TAttLine::Modify(); //Change line attributes only if necessary
773 x0 = gPad->AbsPixeltoX(px);
774 y0 = gPad->AbsPixeltoY(py);
776 pxold = px; pyold = py;
781 if (linedrawn) gVirtualX->DrawBox(px0, py0, pxold, pyold, TVirtualX::kHollow);
785 gVirtualX->DrawBox(px0, py0, pxold, pyold, TVirtualX::kHollow);
789 gPad->GetCanvas()->FeedbackMode(kFALSE);
790 if (px == px0) return;
791 if (py == py0) return;
792 x1 = gPad->AbsPixeltoX(px);
793 y1 = gPad->AbsPixeltoY(py);
795 if (x1 < x0) {temp = x0; x0 = x1; x1 = temp;}
796 if (y1 < y0) {temp = y0; y0 = y1; y1 = temp;}
797 gPad->Range(x0,y0,x1,y1);
798 if (fZooms < fgkMaxZooms-1) {
800 fZoomX0[fZooms] = x0;
801 fZoomY0[fZooms] = y0;
802 fZoomX1[fZooms] = x1;
803 fZoomY1[fZooms] = y1;
805 gPad->Modified(kTRUE);
812 void AliDisplay::SetTracksToDisplay(Int_t *tracks, Int_t n){
814 // set tracks to display - MI
815 fTracksToDisplay = tracks;
816 fNTracksToDisplay = n;
818 //___________________________________________
819 void AliDisplay::LoadPoints()
821 // Read hits info and store x,y,z info in arrays fPoints
822 // Loop on all detectors
824 gAlice->ResetPoints();
825 TIter next(gAlice->Modules());
827 Int_t ntracks = gAlice->GetMCApp()->GetNtrack();
829 while((module = (AliModule*)next()))
831 AliDetector* detector = dynamic_cast<AliDetector*>(module);
832 if(detector) detector->SetTreeAddress();
836 // load only wanted tracks
837 if (fNTracksToDisplay>0)
839 Int_t nprim = gAlice->Stack()->GetNprimary();
840 for (Int_t track=0; track<fNTracksToDisplay;track++)
843 Int_t nev = nprim-1-gAlice->GetMCApp()->GetPrimary(fTracksToDisplay[track]);
844 while((module = (AliModule*)next()))
846 AliDetector* detector = dynamic_cast<AliDetector*>(module);
849 detector->TreeH()->GetEvent(nev);
850 module->LoadPoints(nprim-1-gAlice->GetMCApp()->GetPrimary(fTracksToDisplay[track]));
859 for (Int_t track=0; track<ntracks;track++) {
861 while((module = (AliModule*)next())) {
862 AliDetector* detector = dynamic_cast<AliDetector*>(module);
865 if (detector->TreeH()->GetEvent(track))
866 detector->LoadPoints(track);
874 //_____________________________________________________________________________
875 void AliDisplay::Paint(Option_t *)
877 // Paint miscellaneous items
881 //_____________________________________________________________________________
882 void AliDisplay::SetPickMode()
885 // Set Pick Mode -- disable zoom
889 fArcButton->SetY1(fPickButton->GetYlowNDC()+0.5*fPickButton->GetHNDC());
890 fTrigPad->Modified();
893 //_____________________________________________________________________________
894 void AliDisplay::SetZoomMode()
897 // Set Zoom Mode -- disable pick
901 fArcButton->SetY1(fZoomButton->GetYlowNDC()+0.5*fZoomButton->GetHNDC());
902 fTrigPad->Modified();
905 //_____________________________________________________________________________
906 void AliDisplay::SetPTcut(Float_t ptcut)
918 //_____________________________________________________________________________
919 void AliDisplay::SetRange(Float_t rrange, Float_t zrange)
921 // Set view range along R and Z
930 //_____________________________________________________________________________
931 void AliDisplay::SetView(Float_t theta, Float_t phi, Float_t psi)
933 // change viewing angles for current event
936 fDrawAllViews = kFALSE;
942 TView *view = gPad->GetView();
943 if (view) view->SetView(fPhi, fTheta, fPsi, iret);
949 //_____________________________________________________________________________
950 void AliDisplay::ShowNextEvent(Int_t delta)
952 // Display (current event_number+delta)
953 // delta = 1 shown next event
954 // delta = -1 show previous event
958 //Int_t currentEvent = gAlice->GetHeader()->GetEvent();//event number is not filled correctly
959 Int_t currentEvent = gAlice->GetRunLoader()->GetEventNumber();
960 Int_t newEvent = currentEvent + delta;
961 gAlice->GetEvent(newEvent);
962 AliInfo(Form("delta = %d currentEvent = %d newEvent = %d",
963 delta, currentEvent, newEvent));
970 //______________________________________________________________________________
971 void AliDisplay::UnZoom()
976 if (fZooms <= 0) return;
978 TPad *pad = dynamic_cast<TPad*>(gPad->GetPadSave());
979 pad->Range(fZoomX0[fZooms],fZoomY0[fZooms], fZoomX1[fZooms],fZoomY1[fZooms]);
983 //_____________________________________________________________________________
984 AliDisplay & AliDisplay::operator=(const AliDisplay &disp)
987 // Assignment operator