[u/mrichter/AliRoot.git] / EVE / alice-macros / esd_cascade.C

// $Id$
// Main authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007

/**************************************************************************
 * Copyright(c) 1998-2008, ALICE Experiment at CERN, all rights reserved. *
 * See http://aliceinfo.cern.ch/Offline/AliRoot/License.html for          *
 * full copyright notice.                                                 *
 **************************************************************************/

void esd_cascade_init_rectrack(TEveRecTrack& rt, AliExternalTrackParam* tp)
{
  Double_t      pbuf[3], vbuf[3];

  rt.fSign = tp->GetSign();
  tp->GetXYZ(vbuf);     rt.fV.Set(vbuf);
  tp->GetPxPyPz(pbuf);  rt.fP.Set(pbuf);
  // Double_t ep = at->GetP(), mc = at->GetMass();
  rt.fBeta = 1; // ep/TMath::Sqrt(ep*ep + mc*mc);
}

AliEveCascade* esd_make_cascade(TEveTrackPropagator* rnrStyle, AliESDVertex* primVtx,
				AliESDtrack* bac, AliESDcascade* cascade, Int_t i)
{
  TEveRecTrack   rcPos;
  TEveRecTrack   rcNeg;
  TEveRecV0      rcV0;

  TEveRecTrack   rcBac;
  TEveRecCascade rcCascade;
  
  Double_t v[3];
  cascade->GetXYZ(v[0], v[1], v[2]);
  rcV0.fVCa.Set(v);

  cascade->GetParamN()->GetXYZ(v);  rcV0.fVNeg.Set(v);
  cascade->GetParamP()->GetXYZ(v);  rcV0.fVPos.Set(v);

  rcV0.fV0Birth.Set(primVtx->GetXv(), primVtx->GetYv(), primVtx->GetZv());

  Double_t pCascade[3]={0.}, pBac[3]={0.}, pNeg[3]={0.}, pPos[3]={0.}, cv[21]={0.};
  //cascade->GetPxPyPz(pCascade[0], pCascade[1], pCascade[2]);
  cascade->GetBPxPyPz(pBac[0], pBac[1], pBac[2]);
  cascade->GetNPxPyPz(pNeg[0], pNeg[1], pNeg[2]);
  cascade->GetPPxPyPz(pPos[0], pPos[1], pPos[2]);
  
  	rcCascade.fPBac.Set(pBac);
  	rcV0.fPNeg.Set(pNeg);
	rcV0.fPPos.Set(pPos);
  /*
  // Debug
  printf("\n ESD info \n");	
  printf("Neg :  px = %.5f, py = %.5f, pz = %.5f \n",pNeg[0], pNeg[1], pNeg[2]);
  printf("Pos :  px = %.5f, py = %.5f, pz = %.5f \n",pPos[0], pPos[1], pPos[2]);
  printf("Bach : px = %.5f, py = %.5f, pz = %.5f \n",pBac[0], pBac[1], pBac[2]);
  
  printf("\n EVE info \n");	
  printf("Neg :  px = %.5f, py = %.5f, pz = %.5f \n",rcV0.fPNeg.fX, rcV0.fPNeg.fY, rcV0.fPNeg.fZ);
  printf("Pos :  px = %.5f, py = %.5f, pz = %.5f \n",rcV0.fPPos.fX, rcV0.fPPos.fY, rcV0.fPPos.fZ);
  printf("Bach : px = %.5f, py = %.5f, pz = %.5f \n",rcCascade.fPBac.fX,rcCascade.fPBac.fY,rcCascade.fPBac.fZ);
  */
  Double_t pLambda = TMath::Sqrt((pNeg[0]+pPos[0])* (pNeg[0]+pPos[0]) +
		  		 (pNeg[1]+pPos[1])* (pNeg[1]+pPos[1]) +
		  		 (pNeg[2]+pPos[2])* (pNeg[2]+pPos[2]) );
  Double_t pBach   = TMath::Sqrt( pBac[0]*pBac[0] + pBac[1]*pBac[1] + pBac[2]*pBac[2]);

  cascade->GetXYZcascade(v[0], v[1], v[2]);
  rcCascade.fCascadeVCa.Set(v);

  rcCascade.fCascadeBirth.Set(primVtx->GetXv(), primVtx->GetYv(), primVtx->GetZv());

  // Simulation data not directly available in AliESDcascade
  // rcCascade.fDLabel = cascade->GetBindex();

  // Problem: two following lines are not possible: no GetParamB !!
  // cascade->GetParamB()->GetXYZ(v);  rcCascade.fVBac.Set(v); 
  // esd_cascade_init_rectrack(rcBac, cascade->GetParamB());
  // Solution: create an AliExternalTrackParam with null cv...
  AliExternalTrackParam *bParam = new AliExternalTrackParam(v,pBac,cv,cascade->Charge());
  esd_cascade_init_rectrack(rcBac,bParam);
   rcBac.fIndex = cascade->GetBindex();
  
  esd_cascade_init_rectrack(rcNeg, cascade->GetParamN());
   rcNeg.fIndex = cascade->GetNindex();
  esd_cascade_init_rectrack(rcPos, cascade->GetParamP());
   rcPos.fIndex = cascade->GetPindex();
  
  
/*
  // Debug
  TEveVector BacMom = rcBac.GetMomentum();
  printf("Bac mom : px = %f, py = %f, pz =%f, Ptot = %f \n", BacMom.fX, 
	 rcBac.GetMomentum().fY, 
	 BacMom.fZ, 
	 BacMom.Mag());
*/
  AliEveCascade* myCascade = new AliEveCascade(&rcBac, &rcNeg, &rcPos, &rcV0, &rcCascade, rnrStyle);
  myCascade->SetElementName(Form("ESDcascade %d", i));
  
  /*
  // Debug
  TEveVector CascMom(rcCascade.fPBac + rcV0.fPNeg + rcV0.fPPos);
  printf("Casc mom : px = %f, py = %f, pz =%f, Ptot = %f \n", CascMom.fX, CascMom.fY, CascMom.fZ, CascMom.Mag());
  */
  myCascade->SetElementTitle(Form("Info coming directly from AliESDcascade : \n - Charge : %d \n - Cascade decay position : x = %.4f, y = %.4f, z = %.4f, Transv. radius = %.4f cm, Decay Length = %.4f cm\n\n - Pt(Cascade) : %f GeV/c, Ptot(Cascade): %f GeV/c\n - Lambda : px = %.4f, py = %.4f, pz = %.4f, Ptot : %f GeV/c\n - Bach   : px = %.4f, py = %.4f, pz = %.4f, Ptot : %f GeV/c\n\n - Eta : %f\n - Phi : %f deg \n - Theta : %f deg\n - DCA : %f cm \n - Cos(Ptg Angle) : %f \n\n - Eff. mass (Xi hyp) : %f GeV/c2", 
			     		cascade->Charge(),
					v[0], v[1], v[2], TMath::Sqrt(v[0]*v[0] +v[1]*v[1]), TMath::Sqrt(v[0]*v[0] +v[1]*v[1] + v[2]*v[2] ),
					cascade->Pt(), cascade->P(),
					pNeg[0]+pPos[0], pNeg[1]+pPos[1], pNeg[2]+pPos[2], pLambda,
					pBac[0], pBac[1], pBac[2], pBach,
					cascade->Eta(),
					cascade->Phi()   * 180/TMath::Pi(),
					cascade->Theta() * 180/TMath::Pi(),
					cascade->GetDcaXiDaughters(),
  					cascade->GetCascadeCosineOfPointingAngle(primVtx->GetXv(),
			     							 primVtx->GetYv(),
			     							 primVtx->GetZv()),
					cascade->GetEffMassXi()
				 )
			    );

  
  myCascade->SetESDIndex(i);
  myCascade->SetDaughterDCA(cascade->GetDcaXiDaughters());
  myCascade->SetLambdaP( pNeg[0]+pPos[0], pNeg[1]+pPos[1], pNeg[2]+pPos[2] );
  myCascade->SetBachP(   pBac[0], pBac[1], pBac[2]);
  return myCascade;
}


AliEveCascadeList* esd_cascade()
{
  AliESDEvent* esd = AliEveEventManager::AssertESD();

  AliESDVertex* primVertex = (AliESDVertex*) esd->GetPrimaryVertex();

  AliEveCascadeList* cont = new AliEveCascadeList("ESD cascade");
  cont->SetMainColor(kBlue+2);
  TEveTrackPropagator* rnrStyle = cont->GetPropagator();
  rnrStyle->SetMagField( 0.1*esd->GetMagneticField() );

  gEve->AddElement(cont);

  Int_t count = 0;
  for (Int_t n=0; n<esd->GetNumberOfCascades(); ++n)
  {
    AliESDcascade *cascade = esd->GetCascade(n);

    Int_t bacInd = cascade->GetBindex();
    AliESDtrack* bacTr = esd->GetTrack(bacInd);

    AliEveCascade* myCascade = esd_make_cascade(rnrStyle, primVertex, bacTr, cascade, n);
    if (myCascade)
    {
      gEve->AddElement(myCascade, cont);
      ++count;
    }
  }

  cont->SetTitle("Cascade candidates (reco)");

  cont->MakeCascades();
  gEve->Redraw3D();

  return cont;
}
Commit	Line	Data
d810d0de	1	// $Id$
	2	// Main authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007
	3
	4	/**************************************************************************
	5	* Copyright(c) 1998-2008, ALICE Experiment at CERN, all rights reserved. *
	6	* See http://aliceinfo.cern.ch/Offline/AliRoot/License.html for *
51346b82	7	* full copyright notice. *
d810d0de	8	**************************************************************************/
cb4245bb	9
73ce6137	10	void esd_cascade_init_rectrack(TEveRecTrack& rt, AliExternalTrackParam* tp)
	11	{
	12	Double_t pbuf[3], vbuf[3];
	13
	14	rt.fSign = tp->GetSign();
	15	tp->GetXYZ(vbuf); rt.fV.Set(vbuf);
	16	tp->GetPxPyPz(pbuf); rt.fP.Set(pbuf);
	17	// Double_t ep = at->GetP(), mc = at->GetMass();
	18	rt.fBeta = 1; // ep/TMath::Sqrt(epep + mcmc);
	19	}
75b17362	20
73ce6137	21	AliEveCascade* esd_make_cascade(TEveTrackPropagator* rnrStyle, AliESDVertex* primVtx,
73ce6137	22	AliESDtrack* bac, AliESDcascade* cascade, Int_t i)
75b17362	23	{
73ce6137	24	TEveRecTrack rcPos;
	25	TEveRecTrack rcNeg;
	26	TEveRecV0 rcV0;
	27
	28	TEveRecTrack rcBac;
	29	TEveRecCascade rcCascade;
9851a663	30
73ce6137	31	Double_t v[3];
	32	cascade->GetXYZ(v[0], v[1], v[2]);
	33	rcV0.fVCa.Set(v);
	34
	35	cascade->GetParamN()->GetXYZ(v); rcV0.fVNeg.Set(v);
	36	cascade->GetParamP()->GetXYZ(v); rcV0.fVPos.Set(v);
	37
	38	rcV0.fV0Birth.Set(primVtx->GetXv(), primVtx->GetYv(), primVtx->GetZv());
	39
9851a663	40	Double_t pCascade[3]={0.}, pBac[3]={0.}, pNeg[3]={0.}, pPos[3]={0.}, cv[21]={0.};
9851a663	41	//cascade->GetPxPyPz(pCascade[0], pCascade[1], pCascade[2]);
73ce6137	42	cascade->GetBPxPyPz(pBac[0], pBac[1], pBac[2]);
9851a663	43	cascade->GetNPxPyPz(pNeg[0], pNeg[1], pNeg[2]);
	44	cascade->GetPPxPyPz(pPos[0], pPos[1], pPos[2]);
	45
	46	rcCascade.fPBac.Set(pBac);
	47	rcV0.fPNeg.Set(pNeg);
	48	rcV0.fPPos.Set(pPos);
	49	/*
	50	// Debug
	51	printf("\n ESD info \n");
	52	printf("Neg : px = %.5f, py = %.5f, pz = %.5f \n",pNeg[0], pNeg[1], pNeg[2]);
	53	printf("Pos : px = %.5f, py = %.5f, pz = %.5f \n",pPos[0], pPos[1], pPos[2]);
	54	printf("Bach : px = %.5f, py = %.5f, pz = %.5f \n",pBac[0], pBac[1], pBac[2]);
	55
	56	printf("\n EVE info \n");
	57	printf("Neg : px = %.5f, py = %.5f, pz = %.5f \n",rcV0.fPNeg.fX, rcV0.fPNeg.fY, rcV0.fPNeg.fZ);
	58	printf("Pos : px = %.5f, py = %.5f, pz = %.5f \n",rcV0.fPPos.fX, rcV0.fPPos.fY, rcV0.fPPos.fZ);
	59	printf("Bach : px = %.5f, py = %.5f, pz = %.5f \n",rcCascade.fPBac.fX,rcCascade.fPBac.fY,rcCascade.fPBac.fZ);
	60	*/
	61	Double_t pLambda = TMath::Sqrt((pNeg[0]+pPos[0])* (pNeg[0]+pPos[0]) +
	62	(pNeg[1]+pPos[1])* (pNeg[1]+pPos[1]) +
	63	(pNeg[2]+pPos[2])* (pNeg[2]+pPos[2]) );
	64	Double_t pBach = TMath::Sqrt( pBac[0]pBac[0] + pBac[1]pBac[1] + pBac[2]*pBac[2]);
73ce6137	65
	66	cascade->GetXYZcascade(v[0], v[1], v[2]);
	67	rcCascade.fCascadeVCa.Set(v);
	68
	69	rcCascade.fCascadeBirth.Set(primVtx->GetXv(), primVtx->GetYv(), primVtx->GetZv());
	70
	71	// Simulation data not directly available in AliESDcascade
	72	// rcCascade.fDLabel = cascade->GetBindex();
	73
	74	// Problem: two following lines are not possible: no GetParamB !!
dc07d021	75	// cascade->GetParamB()->GetXYZ(v); rcCascade.fVBac.Set(v);
73ce6137	76	// esd_cascade_init_rectrack(rcBac, cascade->GetParamB());
	77	// Solution: create an AliExternalTrackParam with null cv...
	78	AliExternalTrackParam *bParam = new AliExternalTrackParam(v,pBac,cv,cascade->Charge());
	79	esd_cascade_init_rectrack(rcBac,bParam);
9851a663	80	rcBac.fIndex = cascade->GetBindex();
	81
	82	esd_cascade_init_rectrack(rcNeg, cascade->GetParamN());
	83	rcNeg.fIndex = cascade->GetNindex();
	84	esd_cascade_init_rectrack(rcPos, cascade->GetParamP());
	85	rcPos.fIndex = cascade->GetPindex();
	86
	87
	88	/*
	89	// Debug
	90	TEveVector BacMom = rcBac.GetMomentum();
	91	printf("Bac mom : px = %f, py = %f, pz =%f, Ptot = %f \n", BacMom.fX,
	92	rcBac.GetMomentum().fY,
	93	BacMom.fZ,
	94	BacMom.Mag());
	95	*/
	96	AliEveCascade* myCascade = new AliEveCascade(&rcBac, &rcNeg, &rcPos, &rcV0, &rcCascade, rnrStyle);
73ce6137	97	myCascade->SetElementName(Form("ESDcascade %d", i));
9851a663	98
	99	/*
	100	// Debug
	101	TEveVector CascMom(rcCascade.fPBac + rcV0.fPNeg + rcV0.fPPos);
	102	printf("Casc mom : px = %f, py = %f, pz =%f, Ptot = %f \n", CascMom.fX, CascMom.fY, CascMom.fZ, CascMom.Mag());
	103	*/
	104	myCascade->SetElementTitle(Form("Info coming directly from AliESDcascade : \n - Charge : %d \n - Cascade decay position : x = %.4f, y = %.4f, z = %.4f, Transv. radius = %.4f cm, Decay Length = %.4f cm\n\n - Pt(Cascade) : %f GeV/c, Ptot(Cascade): %f GeV/c\n - Lambda : px = %.4f, py = %.4f, pz = %.4f, Ptot : %f GeV/c\n - Bach : px = %.4f, py = %.4f, pz = %.4f, Ptot : %f GeV/c\n\n - Eta : %f\n - Phi : %f deg \n - Theta : %f deg\n - DCA : %f cm \n - Cos(Ptg Angle) : %f \n\n - Eff. mass (Xi hyp) : %f GeV/c2",
	105	cascade->Charge(),
	106	v[0], v[1], v[2], TMath::Sqrt(v[0]v[0] +v[1]v[1]), TMath::Sqrt(v[0]v[0] +v[1]v[1] + v[2]*v[2] ),
	107	cascade->Pt(), cascade->P(),
	108	pNeg[0]+pPos[0], pNeg[1]+pPos[1], pNeg[2]+pPos[2], pLambda,
	109	pBac[0], pBac[1], pBac[2], pBach,
	110	cascade->Eta(),
	111	cascade->Phi() * 180/TMath::Pi(),
	112	cascade->Theta() * 180/TMath::Pi(),
	113	cascade->GetDcaXiDaughters(),
	114	cascade->GetCascadeCosineOfPointingAngle(primVtx->GetXv(),
	115	primVtx->GetYv(),
	116	primVtx->GetZv()),
	117	cascade->GetEffMassXi()
	118	)
	119	);
	120
	121
73ce6137	122	myCascade->SetESDIndex(i);
73ce6137	123	myCascade->SetDaughterDCA(cascade->GetDcaXiDaughters());
9851a663	124	myCascade->SetLambdaP( pNeg[0]+pPos[0], pNeg[1]+pPos[1], pNeg[2]+pPos[2] );
9851a663	125	myCascade->SetBachP( pBac[0], pBac[1], pBac[2]);
73ce6137	126	return myCascade;
31989443	127	}
	128
	129
73ce6137	130	AliEveCascadeList* esd_cascade()
31989443	131	{
d810d0de	132	AliESDEvent* esd = AliEveEventManager::AssertESD();
31989443	133
73ce6137	134	AliESDVertex* primVertex = (AliESDVertex*) esd->GetPrimaryVertex();
	135
	136	AliEveCascadeList* cont = new AliEveCascadeList("ESD cascade");
9851a663	137	cont->SetMainColor(kBlue+2);
84aff7a4	138	TEveTrackPropagator* rnrStyle = cont->GetPropagator();
daaa6c4d	139	rnrStyle->SetMagField( 0.1*esd->GetMagneticField() );
31989443	140
84aff7a4	141	gEve->AddElement(cont);
31989443	142
31989443	143	Int_t count = 0;
73ce6137	144	for (Int_t n=0; n<esd->GetNumberOfCascades(); ++n)
	145	{
	146	AliESDcascade *cascade = esd->GetCascade(n);
	147
	148	Int_t bacInd = cascade->GetBindex();
	149	AliESDtrack* bacTr = esd->GetTrack(bacInd);
	150
	151	AliEveCascade* myCascade = esd_make_cascade(rnrStyle, primVertex, bacTr, cascade, n);
	152	if (myCascade)
	153	{
	154	gEve->AddElement(myCascade, cont);
	155	++count;
31989443	156	}
	157	}
	158
9851a663	159	cont->SetTitle("Cascade candidates (reco)");
31989443	160
31989443	161	cont->MakeCascades();
84aff7a4	162	gEve->Redraw3D();
31989443	163
	164	return cont;
	165	}