Line data    Source code

       1             : /**************************************************************************
       2             :  * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
       3             :  *                                                                        *
       4             :  * Author: The ALICE Off-line Project.                                    *
       5             :  * Contributors are mentioned in the code where appropriate.              *
       6             :  *                                                                        *
       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             :  **************************************************************************/
      15             : 
      16             : #include "AliMeanVertex.h"
      17             : 
      18             : /* $Id$ */
      19             : 
      20             : /*****************************************************************************
      21             :  *                                                                           *
      22             :  * This class contains the coordinates of the mean primary vertex position   *
      23             :  * computed by AliITSMeanVertex                                              *
      24             :  *                                                                           *
      25             : *****************************************************************************/
      26             : 
      27         172 : ClassImp(AliMeanVertex)
      28             : 
      29             : //--------------------------------------------------------------------------
      30             : AliMeanVertex::AliMeanVertex() :
      31           0 :   AliESDVertex(),
      32           0 :   fTotTracklets(0.),
      33           0 :   fAverTracklets(0.),
      34           0 :   fSigmaOnAverTrack(0.) {
      35             :   //
      36             :   // Default Constructor, set everything to 0
      37             :   //
      38           0 :   for(Int_t i=0;i<3;i++){
      39           0 :     fErrW[i]=0.;
      40             :   }
      41           0 : }
      42             : 
      43             : //--------------------------------------------------------------------------
      44             : AliMeanVertex::AliMeanVertex(Double_t pos[3],Double_t err[3],Double_t cov[6],Int_t nevents, Float_t notracklets, Float_t avertracklets, Float_t signotrackl) :
      45           0 :   AliESDVertex(pos,cov,0.,nevents,"MeanVertex"),
      46           0 :   fTotTracklets(notracklets),
      47           0 :   fAverTracklets(avertracklets),
      48           0 :   fSigmaOnAverTrack(signotrackl) {
      49             :   //
      50             :   // Standard Constructor
      51             :   //
      52           0 :   for(Int_t i=0;i<3;i++){
      53           0 :     fErrW[i]=err[i];
      54             :   }
      55           0 : }
      56             : 
      57             : //--------------------------------------------------------------------------
      58             : void AliMeanVertex::GetErrorsOnPosition(Double_t err[3]) const {
      59             :   //
      60             :   // Return errors on vertex average position (weighted mean on several events)
      61             :   //
      62           0 :   err[0] = fErrW[0];
      63           0 :   err[1] = fErrW[1];
      64           0 :   err[2] = fErrW[2];
      65             : 
      66           0 :   return;
      67             : }