include/root/RooTruthModel.h

0001 /*****************************************************************************
0002  * Project: RooFit                                                           *
0003  * Package: RooFitCore                                                       *
0004  *    File: $Id: RooTruthModel.h,v 1.18 2007/05/11 10:14:56 verkerke Exp $
0005  * Authors:                                                                  *
0006  *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
0007  *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
0008  *                                                                           *
0009  * Copyright (c) 2000-2005, Regents of the University of California          *
0010  *                          and Stanford University. All rights reserved.    *
0011  *                                                                           *
0012  * Redistribution and use in source and binary forms,                        *
0013  * with or without modification, are permitted according to the terms        *
0014  * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
0015  *****************************************************************************/
0016 #ifndef ROO_TRUTH_MODEL
0017 #define ROO_TRUTH_MODEL
0018
0019 #include "RooResolutionModel.h"
0020
0021 class RooTruthModel : public RooResolutionModel {
0022 public:
0023   // Constructors, assignment etc
0024   RooTruthModel() = default;
0025   RooTruthModel(const char *name, const char *title, RooAbsRealLValue& x) ;
0026   RooTruthModel(const RooTruthModel& other, const char* name=nullptr) : RooResolutionModel{other, name} {}
0027   TObject* clone(const char* newname) const override { return new RooTruthModel(*this,newname) ; }
0028
0029   Int_t basisCode(const char* name) const override ;
0030
0031   RooAbsGenContext* modelGenContext(const RooAbsAnaConvPdf& convPdf, const RooArgSet &vars,
0032                                             const RooDataSet *prototype=nullptr, const RooArgSet* auxProto=nullptr,
0033                                             bool verbose= false) const override;
0034
0035   Int_t getGenerator(const RooArgSet& directVars, RooArgSet &generateVars, bool staticInitOK=true) const override;
0036   void generateEvent(Int_t code) override;
0037
0038   Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=nullptr) const override ;
0039   double analyticalIntegral(Int_t code, const char* rangeName=nullptr) const override ;
0040
0041   void doEval(RooFit::EvalContext &) const override;
0042   inline bool canComputeBatchWithCuda() const override { return true; }
0043
0044 protected:
0045   double evaluate() const override ;
0046   void changeBasis(RooFormulaVar* basis) override ;
0047
0048   ClassDefOverride(RooTruthModel,1) // Truth resolution model (delta function)
0049 };
0050
0051 #endif