#include <AliRunLoader.h> //Stack()
#include <AliStack.h> //Stack()
#include <TParticle.h> //Stack()
-#include "AliHMPIDHelix.h" //TestTrans()
ClassImp(AliHMPIDParam)
// Note that TGeoManager should be already initialized from geometry.root file
fX=0.5*AliHMPIDDigit::SizeAllX();
fY=0.5*AliHMPIDDigit::SizeAllY();
- for(Int_t i=0;i<7;i++) fM[i]=(TGeoHMatrix*)gGeoManager->GetVolume("ALIC")->GetNode(Form("HMPID_%i",i))->GetMatrix();
+ for(Int_t i=0;i<7;i++)
+ if(gGeoManager)
+ fM[i]=(TGeoHMatrix*)gGeoManager->GetVolume("ALIC")->GetNode(Form("HMPID_%i",i))->GetMatrix();
+ else{
+ fM[i]=new TGeoHMatrix;
+ IdealPosition(i,fM[i]);
+ }
fgInstance=this;
}//ctor
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
for(Int_t i=0;i<7;i++) fM[i]->Print(opt);
}//Print()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+void AliHMPIDParam::IdealPosition(Int_t iCh, TGeoHMatrix *pMatrix)
+{
+// Construct ideal position matrix for a given chamber
+// Arguments: iCh- chamber ID; pMatrix- pointer to precreated unity matrix where to store the results
+// Returns: none
+ const Double_t kAngHor=19.5; // horizontal angle between chambers 19.5 grad
+ const Double_t kAngVer=20; // vertical angle between chambers 20 grad
+ const Double_t kAngCom=30; // common HMPID rotation with respect to x axis 30 grad
+ const Double_t trans[3]={490,0,0}; //center of the chamber is on window-gap surface
+ pMatrix->RotateY(90); //rotate around y since initial position is in XY plane -> now in YZ plane
+ pMatrix->SetTranslation(trans); //now plane in YZ is shifted along x
+ switch(iCh){
+ case 0: pMatrix->RotateY(kAngHor); pMatrix->RotateZ(-kAngVer); break; //right and down
+ case 1: pMatrix->RotateZ(-kAngVer); break; //down
+ case 2: pMatrix->RotateY(kAngHor); break; //right
+ case 3: break; //no rotation
+ case 4: pMatrix->RotateY(-kAngHor); break; //left
+ case 5: pMatrix->RotateZ(kAngVer); break; //up
+ case 6: pMatrix->RotateY(-kAngHor); pMatrix->RotateZ(kAngVer); break; //left and up
+ }
+ pMatrix->RotateZ(kAngCom); //apply common rotation in XY plane
+
+}
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Int_t AliHMPIDParam::Stack(Int_t evt,Int_t tid)
{
-// Prints some usefull info from stack
+// Prints some useful info from stack
// Arguments: evt - event number. if not -1 print info only for that event
// tid - track id. if not -1 then print it and all it's mothers if any
// Returns: mother tid of the given tid if any