/************************************************************************** * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * * * Author: The ALICE Off-line Project. * * Contributors are mentioned in the code where appropriate. * * * * Permission to use, copy, modify and distribute this software and its * * documentation strictly for non-commercial purposes is hereby granted * * without fee, provided that the above copyright notice appears in all * * copies and that both the copyright notice and this permission notice * * appear in the supporting documentation. The authors make no claims * * about the suitability of this software for any purpose. It is * * provided "as is" without express or implied warranty. * **************************************************************************/ /* $Log$ Revision 1.7 2002/02/08 16:50:50 morsch Add name and title in constructor. Revision 1.6 2001/07/27 17:09:35 morsch Use local SetTrack, KeepTrack and SetHighWaterMark methods to delegate either to local stack or to stack owned by AliRun. (Piotr Skowronski, A.M.) Revision 1.5 2000/12/21 16:24:06 morsch Coding convention clean-up Revision 1.4 2000/11/30 07:12:49 alibrary Introducing new Rndm and QA classes Revision 1.3 2000/10/02 21:28:06 fca Removal of useless dependecies via forward declarations Revision 1.2 2000/07/11 18:24:55 fca Coding convention corrections + few minor bug fixes Revision 1.1 2000/06/09 20:22:58 morsch Same class as previously in AliSimpleGen.cxx All coding rule violations except RS3 corrected (AM) */ // Generator for particles in a preset // kinematic range (flat distribution) // Note that for a given theta pt and p are not independent // Range for only one variable (pt or p) should be given. // // Comments and suggestions: andreas.morsch@cern.ch // //Begin_Html /*

The responsible person for this module is Andreas Morsch.

*/
//End_Html
//                                                               //
///////////////////////////////////////////////////////////////////

#include "TPDGCode.h"

#include "AliConst.h"
#include "AliGenBox.h"
#include "AliRun.h"

ClassImp(AliGenBox)

//_____________________________________________________________________________
AliGenBox::AliGenBox()
    :AliGenerator()
{
  //
  // Default constructor
  //
  fIpart=0;
}

//_____________________________________________________________________________
AliGenBox::AliGenBox(Int_t npart)
  :AliGenerator(npart)
{
  //
  // Standard constructor
  //
  fName  = "Box";
  fTitle = "Box particle generator";
  // Generate Proton by default
  fIpart=kProton;
}

//_____________________________________________________________________________

void AliGenBox::Generate()
{
  //
  // Generate one trigger
  //
  
    Float_t polar[3]= {0,0,0};
  //
    Float_t origin[3];
    Float_t p[3];
    Int_t i, j, nt;
    Double_t pmom, theta, phi, pt;
    //
    Float_t random[6];
  //
    for (j=0;j<3;j++) origin[j]=fOrigin[j];
    if(fVertexSmear==kPerEvent) {
	Rndm(random,6);
	for (j=0;j<3;j++) {
	    origin[j]+=fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
		TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
	}
    }
    for(i=0;i