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#ifndef _CAL_TOWER_HH_
#define _CAL_TOWER_HH_
//----------------------------------------------------------------------
// This file distributed with FastJet has been obtained from
// http://www.pa.msu.edu/~huston/Les_Houches_2005/JetClu+Midpoint-StandAlone.tgz
//
// Permission to distribute it with FastJet has been granted by Joey
// Huston (see the COPYING file in the main FastJet directory for
// details).
// Changes from the original file are listed below.
//----------------------------------------------------------------------
// History of changes compared to the original CalTower.hh file
//
// 2011-11-14 Gregory Soyez <soyez@fastjet.fr>
//
// * added a few parentheses suggested by the -Wparentheses gcc option
//
// 2009-01-17 Gregory Soyez <soyez@fastjet.fr>
//
// * put the code in the fastjet::cdf namespace
//
// 2008-01-15 Gregory Soyez <soyez@fastjet.fr>
//
// * fixed issues with compilation under VC (definition of M_PI)
//
// 2006-09-24 Gavin Salam <salam@lpthe.jussieu.fr>
//
// * added JetClu+MidPoint to FastJet
#include <cmath>
#ifndef M_PI
#define M_PI 3.141592653589793238462643383279502884197
#endif
#include <fastjet/internal/base.hh>
FASTJET_BEGIN_NAMESPACE
namespace cdf{
const double TOWER_THETA[23] = { 3.000, 5.700, 8.400, 11.100, 13.800, 16.500, 19.200, 21.900, 24.600, 27.300, 30.000, 33.524,
36.822, 40.261, 43.614, 47.436, 51.790, 56.735, 62.310, 68.516, 75.297, 82.526, 90.000 };
class CalTower
{
public:
double Et,eta,phi;
int iEta,iPhi;
CalTower(): Et(0), eta(0), phi(0), iEta(-1), iPhi(-1) {}
CalTower(double Et0, double eta0, double phi0): Et(Et0), eta(eta0), phi(phi0)
{
if(fabs(eta) < -log(tan(TOWER_THETA[0]*M_PI/180/2))){
if(eta <= 0){
for(int i = 0; i < 22; i++)
if(eta < -log(tan((180 - TOWER_THETA[i + 1])*M_PI/180/2))){
iEta = 4 + i;
break;
}
}
else{
for(int i = 0; i < 22; i++)
if(-eta < -log(tan((180 - TOWER_THETA[i + 1])*M_PI/180/2))){
iEta = 47 - i;
break;
}
}
if ((iEta >= 8 && iEta < 14) || (iEta >= 38 && iEta < 44))
iPhi = int(phi/2/M_PI*48)%48;
else
iPhi = int(phi/2/M_PI*24)%24;
}
else{
iEta = -1;
iPhi = -1;
}
}
CalTower(double Et0, double eta0, double phi0, int iEta0, int iPhi0): Et(Et0), eta(eta0), phi(phi0), iEta(iEta0), iPhi(iPhi0) {}
CalTower(const CalTower& c): Et(c.Et), eta(c.eta), phi(c.phi), iEta(c.iEta), iPhi(c.iPhi) {}
bool isEqual(CalTower c)
{
return Et == c.Et && eta == c.eta && phi == c.phi && iEta == c.iEta && iPhi == c.iPhi;
}
};
} // namespace cdf
FASTJET_END_NAMESPACE
#endif
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