* provided "as is" without express or implied warranty. *
**************************************************************************/
+/* $Id$ */
+
//_________________________________________________________________________
-// class of PHOS Sub Track
-//*-- Author : Dmitri Peressounko RRC KI
-//////////////////////////////////////////////////////////////////////////////
+// Track segment in PHOS
+// Can be : 1 EmcRecPoint
+// 1 EmcRecPoint + 1 PPSD
+// 1 EmcRecPoint + 1 PPSD + 1 PPSD
+//
+//*-- Author: Dmitri Peressounko (RRC KI & SUBATECH)
// --- ROOT system ---
//____________________________________________________________________________
AliPHOSTrackSegment::AliPHOSTrackSegment( AliPHOSEmcRecPoint * emc , AliPHOSPpsdRecPoint * ppsdRP1,
AliPHOSPpsdRecPoint * ppsdRP2 )
-{
+{
+ // ctor
+
if( emc )
fEmcRecPoint = emc ;
//____________________________________________________________________________
AliPHOSTrackSegment::AliPHOSTrackSegment( const AliPHOSTrackSegment & ts)
{
+ // Copy ctor
+
( (AliPHOSTrackSegment &)ts ).Copy(*this) ;
}
-//____________________________________________________________________________
-AliPHOSTrackSegment::~AliPHOSTrackSegment() // dtor
-{
-// fEmcRecPoint.Delete() ; Not Owners !!!
-// fPpsdUp.Delete() ;
-// fPpsdLow.Delete() ;
-}
//____________________________________________________________________________
void AliPHOSTrackSegment::Copy(TObject & obj)
{
+ // Copy of a track segment into another track segment
+
TObject::Copy(obj) ;
- ( (AliPHOSTrackSegment &)obj ).fEmcRecPoint = fEmcRecPoint ;
- ( (AliPHOSTrackSegment &)obj ).fPpsdLow = fPpsdLow ;
- ( (AliPHOSTrackSegment &)obj ).fPpsdUp = fPpsdUp ;
+ ( (AliPHOSTrackSegment &)obj ).fEmcRecPointId = fEmcRecPointId ;
+ ( (AliPHOSTrackSegment &)obj ).fPpsdLowId = fPpsdLowId ;
+ ( (AliPHOSTrackSegment &)obj ).fPpsdUpId = fPpsdUpId ;
}
//____________________________________________________________________________
Int_t AliPHOSTrackSegment::DistancetoPrimitive(Int_t px, Int_t py)
{
- //Compute distance from point px,py to a AliPHOSTrackSegment considered as a Tmarker
- // Compute the closest distance of approach from point px,py to this marker.
- // The distance is computed in pixels units.
- //
+ // Compute distance from point px,py to a AliPHOSTrackSegment considered as a Tmarker
+ // Compute the closest distance of approach from point px,py to this marker.
+ // The distance is computed in pixels units.
+
Int_t div = 1 ;
TVector3 pos(0.,0.,0.) ;
-
+
fEmcRecPoint->GetLocalPosition( pos) ;
Float_t x = pos.X() ;
Float_t y = pos.Z() ;
void AliPHOSTrackSegment::Draw(Option_t *option)
{
// Draw this AliPHOSTrackSegment with its current attribute
-
+
AppendPad(option);
}
//
// If Left button is clicked on AliPHOSRecPoint, the digits are switched on
// and switched off when the mouse button is released.
- //
- static TPaveText* textTS = 0 ;
-
- if (!gPad->IsEditable())
- return;
-
- switch (event) {
-
- case kButton1Down:{
+
+ static TPaveText* textTS = 0 ;
+
+ if (!gPad->IsEditable())
+ return;
+
+ switch (event) {
- if (!textTS) {
+ case kButton1Down:{
+
+ if (!textTS) {
+
+ TVector3 pos(0.,0.,0.) ;
+ fEmcRecPoint->GetLocalPosition(pos) ;
+ textTS = new TPaveText(pos.X()-10,pos.Z()+10,pos.X()+5,pos.Z()+15,"") ;
+ Text_t line1[40] ;
+ sprintf(line1,"See RecParticle for ID") ;
+ textTS ->AddText(line1) ;
+ textTS ->Draw("");
+ gPad->Update() ;
+ }
+ }
+
+ break;
- TVector3 pos(0.,0.,0.) ;
- fEmcRecPoint->GetLocalPosition(pos) ;
- textTS = new TPaveText(pos.X()-10,pos.Z()+10,pos.X()+5,pos.Z()+15,"") ;
- Text_t line1[40] ;
- sprintf(line1,"See RecParticle for ID") ;
- textTS ->AddText(line1) ;
- textTS ->Draw("");
- gPad->Update() ;
- }
- }
-
- break;
-
- case kButton1Up:
- if (textTS) {
- delete textTS ;
- textTS = 0 ;
- }
- break;
- }
+ case kButton1Up:
+ if (textTS) {
+ delete textTS ;
+ textTS = 0 ;
+ }
+ break;
+ }
}
-
//____________________________________________________________________________
Float_t AliPHOSTrackSegment::GetDistanceInPHOSPlane()
{
-
+ // Calculates the distance between the EMC RecPoint and PPSD RecPoint
+
TVector3 vecEmc ;
fEmcRecPoint->GetLocalPosition(vecEmc) ;
-
+
TVector3 vecPpsd ;
if( fPpsdLow->GetMultiplicity() )
fPpsdLow->GetLocalPosition(vecPpsd) ;
//____________________________________________________________________________
TVector3 AliPHOSTrackSegment::GetMomentumDirection()
-{
- TVector3 dir, tempo ;
+{
+ // Calculates the momentum direction:
+ // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint
+ // 2. if a EMC RecPoint and one PPSD RecPoint, direction is given by the line through the 2 recpoints
+ // 3. if a EMC RecPoint and two PPSD RecPoints, dirrection is given by the average line through
+ // the 2 pairs of recpoints
+ // However because of the poor position resolution of PPSD the direction is always taken as if we were
+ // in case 1.
+
+ TVector3 dir(0,0,0) ;
TMatrix mdummy ;
TVector3 posEmc ;
fEmcRecPoint->GetGlobalPosition(posEmc, mdummy) ;
- // need to correct here for the depth of the shower start point (TDR p 127) ?
+ // Correction for the depth of the shower starting point (TDR p 127)
Float_t energy = fEmcRecPoint->GetEnergy() ;
Float_t para = 0.925 ;
Float_t incidencephi = TMath::ATan(localpos.X() / radius) ;
Float_t incidencetheta = TMath::ATan(localpos.Z() / radius) ;
- Float_t depthx = - ( para * TMath::Log(energy) + parb ) * TMath::Sin(incidencephi) ;
- Float_t depthz = - ( para * TMath::Log(energy) + parb ) * TMath::Sin(incidencetheta) ;
+ Float_t depthx = ( para * TMath::Log(energy) + parb ) * TMath::Sin(incidencephi) ;
+ Float_t depthz = ( para * TMath::Log(energy) + parb ) * TMath::Sin(incidencetheta) ;
- TVector3 posPpsdl ;
- TVector3 posPpsdup ;
+ localpos.SetX(localpos.X() - depthx ) ;
+ localpos.SetZ(localpos.Z() - depthz ) ;
-// if( fPpsdLow ){
-// fPpsdLow->GetGlobalPosition(posPpsdl, mdummy) ;
-// if( !fPpsdUp ) { // draw line trough 2 points
-// tempo = posEmc - posPpsdl;
-// }
+ TVector3 emcglobalpos ;
+ TMatrix dummy ;
-// else { // draw line through 3 points
-// fPpsdUp->GetGlobalPosition(posPpsdup, mdummy) ;
-// posPpsdl = 0.5 * ( posPpsdup + posPpsdl ) ;
-// dir = posEmc - posPpsdl ;
-// }
-// }
-// else
- tempo = posEmc ;
-
- dir.SetX( tempo.X() + depthx ) ; // assumes that a neutral comes from the vertex
- dir.SetY( tempo.Y() ) ;
- dir.SetZ( -tempo.Z() - depthz ) ;
+ fEmcRecPoint->GetGlobalPosition(emcglobalpos, dummy) ;
+
+ emcglobalpos.SetX( emcglobalpos.X() - depthx ) ;
+ emcglobalpos.SetZ( emcglobalpos.Z() - depthz ) ;
+ // The following commeneted code becomes valid once the PPSD provides
+ // a reasonable position resolution, at least as good as EMC !
+
+// TVector3 ppsdlglobalpos ;
+// TVector3 ppsduglobalpos ;
+
+// if( fPpsdLow ){ // certainly a photon that has concerted
+
+// fPpsdLow->GetGlobalPosition(ppsdlglobalpos, mdummy) ;
+// dir = emcglobalpos - ppsdlglobalpos ;
+
+// if( fPpsdUp ){ // nop looks like a charged
+
+// fPpsdUp->GetGlobalPosition(ppsduglobalpos, mdummy) ;
+// dir = ( dir + emcglobalpos - ppsduglobalpos ) * 0.5 ;
+// }
+// }
+
+// else { // looks like a neutral
+
+ dir = emcglobalpos ;
+// }
+
+ dir.SetZ( -dir.Z() ) ; // why ?
dir.SetMag(1.) ;
+
return dir ;
}
+//____________________________________________________________________________
+Int_t * AliPHOSTrackSegment::GetPrimariesEmc(Int_t & number)
+{
+ // Retrieves the primary particle(s) at the origin of the EMC RecPoint
+
+ Int_t * rv = 0 ;
+ number = 0 ;
+ if ( fEmcRecPoint )
+ rv = fEmcRecPoint->GetPrimaries(number) ;
+
+ return rv ;
+}
+
+//____________________________________________________________________________
+Int_t * AliPHOSTrackSegment::GetPrimariesPpsdLow(Int_t & number)
+{
+ // Retrieves the primary particle(s) at the origin of the lower PPSD RecPoint
+
+ Int_t * rv = 0 ;
+ number = 0 ;
+ if ( fPpsdLow )
+ rv = fPpsdLow->GetPrimaries(number) ;
+
+ return rv ;
+}
+
+//____________________________________________________________________________
+Int_t * AliPHOSTrackSegment::GetPrimariesPpsdUp(Int_t & number)
+{
+ // Retrieves the primary particle(s) at the origin of the upper PPSD RecPoint
+
+ Int_t * rv = 0 ;
+ number = 0 ;
+ if ( fPpsdUp )
+ rv = fPpsdUp->GetPrimaries(number) ;
+
+ return rv ;
+}
//____________________________________________________________________________
void AliPHOSTrackSegment::GetPosition( TVector3 & pos )
{
- // Returns positions of hits
+ // Returns position of the EMC RecPoint
+
TMatrix dummy ;
fEmcRecPoint->GetGlobalPosition(pos, dummy) ;
}
+
//______________________________________________________________________________
void AliPHOSTrackSegment::Paint(Option_t *)
{
- //Paint this ALiPHOSTrackSegment as a TMarker with its current attributes
-
- TVector3 posemc(999., 999., 999.) ;
- TVector3 posppsdl(999., 999., 999.) ;
- TVector3 posppsdu(999., 999., 999.) ;
-
- fEmcRecPoint->GetLocalPosition(posemc) ;
- if (fPpsdLow !=0 )
- fPpsdLow->GetLocalPosition(posppsdl) ;
- if (fPpsdUp !=0 )
- fPpsdUp->GetLocalPosition(posppsdu) ;
-
- Coord_t xemc = posemc.X() ;
- Coord_t yemc = posemc.Z() ;
-
- Coord_t yppsdl = posppsdl.Z() ;
- Coord_t xppsdl = posppsdl.X() ;
-
- Coord_t yppsdu = posppsdu.Z() ;
- Coord_t xppsdu = posppsdu.X() ;
-
- Color_t markercolor = 1 ;
- Size_t markersize = 1.5 ;
- Style_t markerstyle = 20 ;
-
- if (!gPad->IsBatch()) {
- gVirtualX->SetMarkerColor(markercolor) ;
- gVirtualX->SetMarkerSize (markersize) ;
- gVirtualX->SetMarkerStyle(markerstyle) ;
- }
- gPad->SetAttMarkerPS(markercolor,markerstyle,markersize) ;
- gPad->PaintPolyMarker(1, &xemc, &yemc, "") ;
-
- if (xppsdl != 999. && yppsdl != 999. ) {
+ // Paint this ALiPHOSTrackSegment as a TMarker with its current attributes
- markercolor = 2 ;
- markersize = 1.25 ;
- markerstyle = 21 ;
-
- if (!gPad->IsBatch()) {
- gVirtualX->SetMarkerColor(markercolor) ;
- gVirtualX->SetMarkerSize (markersize) ;
- gVirtualX->SetMarkerStyle(markerstyle) ;
- }
- gPad->SetAttMarkerPS(markercolor,markerstyle,markersize) ;
- gPad->PaintPolyMarker(1, &xppsdl, &yppsdl, "") ;
- }
-
- if (xppsdu != 999. && yppsdu != 999. ) {
+ TVector3 posemc(999., 999., 999.) ;
+ TVector3 posppsdl(999., 999., 999.) ;
+ TVector3 posppsdu(999., 999., 999.) ;
- markercolor = 3 ;
- markersize = 1. ;
- markerstyle = 22 ;
-
- if (!gPad->IsBatch()) {
- gVirtualX->SetMarkerColor(markercolor) ;
- gVirtualX->SetMarkerSize (markersize) ;
- gVirtualX->SetMarkerStyle(markerstyle) ;
- }
- gPad->SetAttMarkerPS(markercolor,markerstyle,markersize) ;
- gPad->PaintPolyMarker(1, &xppsdu, &yppsdu, "") ;
+ fEmcRecPoint->GetLocalPosition(posemc) ;
+ if (fPpsdLow !=0 )
+ fPpsdLow->GetLocalPosition(posppsdl) ;
+ if (fPpsdUp !=0 )
+ fPpsdUp->GetLocalPosition(posppsdu) ;
+
+ Coord_t xemc = posemc.X() ;
+ Coord_t yemc = posemc.Z() ;
+
+ Coord_t yppsdl = posppsdl.Z() ;
+ Coord_t xppsdl = posppsdl.X() ;
+
+ Coord_t yppsdu = posppsdu.Z() ;
+ Coord_t xppsdu = posppsdu.X() ;
+
+ Color_t markercolor = 1 ;
+ Size_t markersize = 1.5 ;
+ Style_t markerstyle = 20 ;
+
+ if (!gPad->IsBatch()) {
+ gVirtualX->SetMarkerColor(markercolor) ;
+ gVirtualX->SetMarkerSize (markersize) ;
+ gVirtualX->SetMarkerStyle(markerstyle) ;
+ }
+ gPad->SetAttMarkerPS(markercolor,markerstyle,markersize) ;
+ gPad->PaintPolyMarker(1, &xemc, &yemc, "") ;
+
+ if (xppsdl != 999. && yppsdl != 999. ) {
+
+ markercolor = 2 ;
+ markersize = 1.25 ;
+ markerstyle = 21 ;
+
+ if (!gPad->IsBatch()) {
+ gVirtualX->SetMarkerColor(markercolor) ;
+ gVirtualX->SetMarkerSize (markersize) ;
+ gVirtualX->SetMarkerStyle(markerstyle) ;
+ }
+ gPad->SetAttMarkerPS(markercolor,markerstyle,markersize) ;
+ gPad->PaintPolyMarker(1, &xppsdl, &yppsdl, "") ;
+ }
+
+ if (xppsdu != 999. && yppsdu != 999. ) {
+
+ markercolor = 3 ;
+ markersize = 1. ;
+ markerstyle = 22 ;
+
+ if (!gPad->IsBatch()) {
+ gVirtualX->SetMarkerColor(markercolor) ;
+ gVirtualX->SetMarkerSize (markersize) ;
+ gVirtualX->SetMarkerStyle(markerstyle) ;
}
+ gPad->SetAttMarkerPS(markercolor,markerstyle,markersize) ;
+ gPad->PaintPolyMarker(1, &xppsdu, &yppsdu, "") ;
+ }
}
-
//____________________________________________________________________________
void AliPHOSTrackSegment::Print()
{
+ // Print all information on this track Segment
+
cout << "--------AliPHOSTrackSegment-------- "<<endl ;
cout << "EMC Reconstructed Point: " << fEmcRecPoint << endl;
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff