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source: git/classes/DelphesFormula.cc @ 7e83689

ImprovedOutputFile
Last change on this file since 7e83689 was 7e83689, checked in by Roberto Preghenella <preghenella@…>, 6 months ago

Add particle density to formula parameterisations

also adds a new module that computes the particle density
in a eta-phi grid sets the ParticleDensity? value of the
candidate, to be used in formula parameterisations.

  • Property mode set to 100644
File size: 2.9 KB
Line 
1/*
2 *  Delphes: a framework for fast simulation of a generic collider experiment
3 *  Copyright (C) 2012-2014  Universite catholique de Louvain (UCL), Belgium
4 *
5 *  This program is free software: you can redistribute it and/or modify
6 *  it under the terms of the GNU General Public License as published by
7 *  the Free Software Foundation, either version 3 of the License, or
8 *  (at your option) any later version.
9 *
10 *  This program is distributed in the hope that it will be useful,
11 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 *  GNU General Public License for more details.
14 *
15 *  You should have received a copy of the GNU General Public License
16 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
17 */
18
19#include "classes/DelphesFormula.h"
20#include "classes/DelphesClasses.h"
21
22#include "TString.h"
23
24#include <stdexcept>
25
26using namespace std;
27
28//------------------------------------------------------------------------------
29
30DelphesFormula::DelphesFormula() :
31  TFormula()
32{
33}
34
35//------------------------------------------------------------------------------
36
37DelphesFormula::DelphesFormula(const char *name, const char *expression) :
38  TFormula()
39{
40}
41
42//------------------------------------------------------------------------------
43
44DelphesFormula::~DelphesFormula()
45{
46}
47
48//------------------------------------------------------------------------------
49
50Int_t DelphesFormula::Compile(const char *expression)
51{
52  TString buffer;
53  const char *it;
54  for(it = expression; *it; ++it)
55  {
56    if(*it == ' ' || *it == '\t' || *it == '\r' || *it == '\n' || *it == '\\') continue;
57    buffer.Append(*it);
58  }
59  buffer.ReplaceAll("pt", "x");
60  buffer.ReplaceAll("eta", "y");
61  buffer.ReplaceAll("phi", "z");
62  buffer.ReplaceAll("energy", "t");
63  buffer.ReplaceAll("d0", "[0]");
64  buffer.ReplaceAll("dz", "[1]");
65  buffer.ReplaceAll("ctgTheta", "[2]");
66  buffer.ReplaceAll("radius", "[3]");
67  buffer.ReplaceAll("density", "[4]");
68
69#if ROOT_VERSION_CODE < ROOT_VERSION(6, 3, 0)
70  TFormula::SetMaxima(100000, 1000, 1000000);
71#endif
72
73  if(TFormula::Compile(buffer) != 0)
74  {
75    throw runtime_error("Invalid formula.");
76  }
77  return 0;
78}
79
80//------------------------------------------------------------------------------
81
82Double_t DelphesFormula::Eval(Double_t pt, Double_t eta, Double_t phi, Double_t energy, Candidate *candidate)
83{
84
85  Double_t d0 = 0., dz = 0., ctgTheta = 0., radius = 0., density = 0.;
86  if (candidate) {
87    d0 = candidate->D0;
88    dz = candidate->DZ;
89    ctgTheta = candidate->CtgTheta;
90    radius = candidate->Position.Pt();
91    density = candidate->ParticleDensity;
92  }
93   
94  Double_t x[4] = {pt, eta, phi, energy};
95  Double_t params[5] = {d0, dz, ctgTheta, radius, density};
96  return EvalPar(x, params);
97}
98
99//------------------------------------------------------------------------------
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